JPS638565Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is a method for attaching a U-shaped staple to the neck of a bag-like object to be bound by moving a driver member, such as in a sealing machine. The present invention relates to a driving mechanism for a driver member that is effective for wrapping a bag-like object and sealing the opening of the bag-like object.

[Conventional technology]

Conventionally, a U-shaped staple is pressed against a clincher block by a driver member that is driven parallel to the base, and the staple is wrapped around the neck of a bag-like object to be bound, and the neck is clinched. A hermetic binding machine is known in which the opening of a bag-like article is sealed.

The driver member is adapted to be driven via a link mechanism 50 as shown in FIG.
Note that FIG. 1 is a schematic diagram showing a state in which the driver member 51 is cutting and separating the staples from the connected staples during forward movement. This link mechanism 50 includes a first link 53, one end of which is fixed to a pivot shaft 52 of a manual handle (not shown), and one end of which is connected to the first link 53 via a first movable pin 54.
a second link 5 rotatably connected to the other end of 3;
5, and a third link 57 whose one end is rotatably coupled to the other end of the second link 55 via a second movable pin 56 and whose other end is rotatably supported by the driver member 51. One end is rotatably attached to the second movable pin 56, and the other end is rotated to a fixed shaft 58 disposed closer to the rotation shaft 52 of the handle than the movement axis X of the driver member 51. Fourth link 59 freely assembled
It is composed of.

That is, by rotating the handle,
When the first link 53 is rotated counterclockwise in FIG. 1, the third link 57 is moved to the left in the figure via the second link 55, and the driver member 51 is rotated in the counterclockwise direction in the figure. It is now moving to the left.

By moving the driver member 51 forward, first, the leading edge staple of the connected staples previously loaded at the outer position of the tip of the driver member 51 is separated from the other staple groups. Then, the separated staples are pressed against a clincher block (not shown) by the continuous forward movement of the driver member 51, thereby clinching the objects to be bound.

The link mechanism 50 used in the hermetic binding machine is assembled with the following dimensional relationship.

In addition, the following numerical values are those at the time of staple separation. Length of first link 53: 35 mm, length of second link 55: 40 mm, third link 57
Length: 46mm, Length of 4th link 58: 46mm,
Vertical height E ₁ from the rotation support shaft 52 to the movement line X of the driver member 51: 88 mm, the driver member 5
The fixed shaft 5 is connected from the assembly site of the first and third links 57.
Horizontal distance E ₂ to 8: 50mm, second movable pin 5
Horizontal distance E ₃ from 6 to the above fixed axis 58: 32.5
mm, from the second movable pin 56 to the fixed shaft 58
Vertical height E ₄ : 32.5 mm, vertical height E 5 from the above rotation support shaft 52 to the first movable pin ₅₄ : 5.5 mm,
Horizontal distance E ₆ from the rotation support shaft 52 to the fixed shaft 58: 66 mm, inclination angle R of the first link 53: 9°, force F ₁ on the first movable pin 54
and the angle between the first link 53
Q ₁ : 90°, first link 53 and second link 55
Angle Q ₂ between: 97°, Angle Q ₃ between second link 55 and third link 57: 159°, Angle Q ₄ between second link 55 and fourth link 59: 133°, Angle Q ₅ between the third link 57 and the fourth link 59: 67°, the movement axis X of the third link 57 and the driver member 51
Angle Q ₆ between: 68°, Angle Q ₇ between the fourth link 59 and the axis of movement X of the driver member 51: 45°, Angle between the fixed shaft 58 and the axis of movement X of the driver member 51
The vertical distance _A1 is 10mm.

Then, when the above-mentioned handle is rotated with a force of 10 kg, each of the above-mentioned links 53, 55, 57, 5
The following forces act on the driver member 9 and the driver member 51. Force F ₁ acting on the first movable pin 54: 54.5Kg, force acting on the second link 55
F ₂ : 55Kg, force acting on the third link 57 F ₃ :
43Kg, force acting on driver member 51
F ₄ : 16Kg, force acting on the fourth link 59 F ₅ :
It becomes 21Kg. That is, the staple is separated with a force of 16 kg.

When the forward movement of the driver member 51 advances and the staple is pressed against the clinching block and clinched, each of the links 53, 55, 57, 59
The following forces act on the driver member 51.

Force F ₁ acting on the first movable pin 54:
54.5Kg, force F ₂ acting on the second link 55: 63.6
Kg, force F ₃ acting on the third link 57: 72.7Kg,
Force F ₄ acting on driver member 51: 58.9
Kg, and the force F ₅ acting on the fourth link 59 is 55.6 Kg. That is, the staple is pressed against the clinching block with a force of 58.9 kg and clinched.

[Problem that the invention attempts to solve]

As described above, in the conventional link mechanism 50, the load during staple separation is small and buckling is likely to occur for the staple to be separated, and the load during clinch is too large to completely crush the staple. has become inadequate.

Therefore, an object of the present invention is to make it possible to increase the load acting on the driver member with the same rotational operation load of the handle as the conventional one.

[Means for solving problems]

The present invention includes a first link having one end fixed to a rotating shaft of a driver drive handle, and a first link having one end rotatably connected to the other end of the first link via a first movable pin. a third link whose one end is rotatably coupled to the other end of the second link via a second movable pin and whose other end is rotatably supported by the driver member; One end is rotatably attached to the second movable pin, and the other end is rotatable to a fixed shaft located at a position opposite to the pivot axis of the handle with the axis of movement of the driver member in between. and a fourth link assembled to the drive member, and the second link and the third link are arranged in a substantially straight line before the driver member is activated. be.

[Effect]

In the present invention, when the handle is rotated, the first link is simultaneously rotated around the rotation support shaft, and the second link is rotated simultaneously with the first link.
and press the third link. When these second and third links are pressed, the driver member connected to the third link is moved forward to perform staple separation and further clinch.

The second and third links are positioned so as to be connected in a substantially straight line before starting the driver, and a large force acting on each ring of the first to fourth links acts on the driver during a clinch.

〔Example〕

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

FIG. 2 is an external perspective view of the hermetic binding machine according to the present invention. This sealing binding machine has a base 1, a support 2 erected on the base 1, and a housing 3 integrally formed on the upper end of the support 2.

Inside the housing 3, as shown in FIG. 3, a driver member 4 made of an elongated plate is arranged so as to be able to reciprocate in parallel to the base 1. Further, the housing 3 has a guide surface for guiding the movement of the driver member 4, and a staple guide member 5 made of an elongated plate for guiding one U-shaped staple s to a binding position. is arranged so that it can freely reciprocate. A magazine device 6 for storing staples is erected on the upper part of the housing 3, and the most advanced staple s of the connected staples S stored in this magazine device 6 is a staple as shown in FIG. It is in a state where it is supplied in advance to a position outside the tip 4a of the driver member 4 through the supply port 7.

A handle 8 for moving the driver member 4 forward is provided on one side of the housing 3 in a protruding manner.
When the handle 8 is rotated in the direction of arrow A in FIG. 2, the driver member 4 slides along the staple guide member 5 to the left in FIG. A guide plate 10 that guides one side of the driver member 4
Push it in between.

When the handle 8 continues to be rotated, the driver member 4 moves integrally with the staple guide member 5 toward the binding position.

A clincher block 12 is provided on the leading end side of the guide plate 10, which is the binding position, so as to face the leading end 4a of the driver member 4.
A support member 13 for receiving the distal end surface 5A of the staple guide member 5 is provided adjacent to the clincher block 12. When the tip end surface 5A of the staple member 5 comes into contact with the support member 13 and its forward movement is stopped, only the driver member 4 moves forward along the staple guide member 5 and the guide plate 10, and the The staple s is pressed into the bending groove of the clincher block 12. At this time, the staple s is wound around the neck of a bag-like object (not shown) to be bound which is inserted and supported between the tip 4a of the driver member 4 and the clincher block 12. It is designed to seal the opening of an object.

Further, on one side of the housing 3, a collecting member 1 is provided for collecting the necks of the bag-like articles at a binding position.
4 is provided protrudingly. The base end of the focusing plate 14 is pivotally supported within the housing so that it can rotate parallel to the base 1. The focusing plate 14
is rotated in the direction of arrow B in FIG. 3 in conjunction with the forward movement of the staple guide member 5, and the front end of the focusing plate 14 is rotated in the direction of arrow B in FIG. The neck portion of the bag-like object is converged between the surface 14A and one side surface 10A of the guide plate 10.

After binding, when the rotation operation of the handle 8 is released, the driver member 4 and the staple guide member 5 are automatically returned to the pre-operation position by the elastic force of a spring (not shown) that returns the handle 8 to its pre-operation position. At the same time, the focusing plate 14
The staple guide member 5 returns to its pre-operation position in conjunction with the return movement of the staple guide member 5.

As shown in FIG. 4, a prismatic moving block 15 is fixed to the base end of the driver member 4 with screws. A link mechanism 16 is interposed between the moving block 15 and the pivot shaft 8a of the handle 8.

The link mechanism 16 has one end connected to the handle 8.
The first link 17 fixed to the pivot shaft 8a of
and one end is connected to the first movable pin 18 via the first movable pin 18.
A second link rotatably coupled to the other end of the link 17 of
link 19 and a shaft body 21 whose one end is rotatably coupled to the other end of the second link 19 via a second movable pin 20 and whose other end is assembled to the moving block 15. A third link 22 is rotatably supported, and one end is rotatably assembled to the second movable pin 20, and the other end is connected to the handle 8 with the movement axis Y of the driver member 4 therebetween. A fourth rotatably assembled to a fixed shaft 23 located at a position opposite to the rotation support shaft 8a.
The second link 19 and the third link 22 are arranged in a substantially linear state before the driver member 4 is activated.

That is, when the handle 8 is rotated in the direction of arrow A in FIG. 2, the first link 17 rotates counterclockwise in the same figure as shown in FIG. The links 19 and 22 are pressed in the direction of arrow C in the figure. By pressing the second and third links 19 and 22, the driver member 4 moves forward in the left direction in the figure, and the connected staple S that has been supplied in advance to the outer position of the tip of the driver member 7 is moved forward in the left direction in the figure. Separate the leading staple s from the other staples s. The above separated staples
are guided to the binding position by the staple guide member 5.

Then, the rotation of the first link 17 progresses,
When the driver member 4 presses the staple s against the bending groove 12A of the clincher block 12, the third link 22 moves counterclockwise in the figure around the second movable pin 20, as shown in FIG. The link 22 is superimposed on the movement axis Y of the driver member 4.

Next, each link 17, 1 of the link mechanism 16
The assembly dimension relationship of 9, 22, and 24 will be explained with reference to the schematic diagram shown in FIG. Incidentally, FIG. 7 is a schematic diagram showing a state in which the driver member 4 is cutting and separating the staples from the connected staples during forward movement.

The numerical values at the time of staple separation are shown below.
Length of first link 22: 35mm, second link 1
Length of 9: 40mm, Length of third link 22: 46
mm, length of the fourth link 24: 46 mm, rotation support shaft 8
Vertical height E ₁ from a to the moving line Y of the driver member 4: 89 mm, horizontal distance E 2 from the assembly site of the driver member 4 and the third link 22 to the fixed shaft ₂₃ : 50 mm, the second Horizontal distance E ₃ from the movable pin 20 to the fixed shaft 23: 17.5 mm, vertical height from the second movable pin 20 to the fixed shaft 23
E ₄ : 42.5 mm, vertical height from the rotation support shaft 8a to the first movable pin 18 E ₅ : 24.7 mm, horizontal distance from the rotation support shaft 8a to the above fixed shaft 23 E ₆ : 17
mm, inclination angle R of the first link 17: 45°,
Angle Q _{1 between the acting direction of force F 1} on the first movable pin 18 and the first link ₁₇ : 90°, angle between the first link 17 and the second link 19
Q ₂ : 97°, second link 19 and third link 22
Angle Q ₃ between: 172°, Angle Q ₄ between second link 19 and fourth link 24: 120°, Angle Q 5 between third link 22 and fourth link 24: ₆₇ , Third The angle between the link 22 and the axis of movement Y of the driver member 4
Q ₆ : 45°, angle between the fourth link 24 and the moving axis Y of the driver member 4 Q ₇ : 68°, vertical distance A ₁ from the fixed shaft 23 to the moving axis Y of the driver member 4 10 mm. It's summery.

If the operating load of the handle 8 is 10 kg, the following forces act on the links 17, 19, 22, 24 and the driver member 4.

Force F ₁ acting on the first movable pin 18:
54.5Kg, force F ₂ acting on the second link 19: 55
Kg, force F ₃ acting on the third link 22: 51.5Kg,
Force F _{4 acting on driver member 4} : 36.4Kg,
The force F ₅ acting on the fourth link 24 is 7.8 kg.
That is, the staple s is separated with a force of 36.4 kg.

When the forward movement of the driver member 4 progresses and the staple s is pressed against the clinching block 12 and clinched, each of the links 17, 19, 22,
24 and the driver member 4 are subjected to the following forces.

Force F ₁ acting on the first pivot pin 18:
54.5Kg, force F ₂ acting on the second link 19:
379.6Kg, force F ₃ acting on the third link 22:
410.5Kg, force acting on driver member 4
F ₄ : 381.5Kg, force acting on the fourth link 24
F ₅ : The staple s is pressed against the clincher block 12 with a force of 374.8 kg to clinch the neck of the bag-like object.

As described above, according to the above embodiment, the force acting on the driver member 4 during staple separation is more than twice as large as that in the conventional case. Therefore, staple s
The cutting force is strong, and accidents such as buckling of the staple s can be reliably prevented.

Further, the force acting on the driver member 4 during clinching is more than six times greater than that of the conventional case. Therefore,
The staples s can be completely crushed and a stable sealed state of the bag-like object can be obtained.

[Effect of idea]

As described above, according to the present invention, the load acting on the driver member can be increased while the rotational operation load of the handle is the same as that of the conventional one.
It is possible to prevent buckling of the staples when they are separated, and to firmly clinch objects to be bound with the staples.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a conventional example, Fig. 2 is an external perspective view of a hermetic binding machine to which the present invention is applied, Fig. 3 is an enlarged cross-sectional plan view of the main part, Fig. 4 is an enlarged side view of the main part, Figure 5 is an enlarged side view of the main part during staple separation, Figure 6 is an enlarged side view of the main part during clinch, and Figure 7 shows the driver member cutting and separating the staple from the connected staple during forward movement. It is a schematic diagram showing a state. 4...Driver member, 8...Handle, 8a...
...Rotation shaft, 16...Link mechanism, 17...First
link, 18...first movable pin, 19...second link, 20...second movable pin, 22...
Third link, 23... Fixed axis, 24... Fourth link.

Claims (1)

[Scope of utility model claims] A first link whose one end is fixed to the pivot shaft of the driver drive handle, and a second link whose one end is rotatably coupled to the other end of the first link via a first movable pin. a third link, one end of which is rotatably coupled to the other end of the second link via a second movable pin, and the other end rotatably supported by the driver member; The second movable pin is rotatably assembled, and the other end is rotatably assembled to a fixed shaft located at a position opposite to the pivot shaft of the handle, with the moving axis of the driver member in between. A drive mechanism for a driver member, characterized in that the second link and the third link are arranged in a substantially straight line before starting the driver member. .