JPS5848062Y2 - Sealing machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a staple binding machine, and is easy to manufacture by forming the staple binding machine base with a step part that determines the mounting height position of the staple magazine by press molding. Moreover, it is an object of the present invention to provide a needle binding machine in which the strength of the magazine mounting part can be made good.

Generally, a cardboard box or the like is assembled into a box shape by folding a sheet of material into a box shape, and using a stapler or the like to drive staples into the seams between the flaps.

The stapler used for this type of line pair is a stapler base that is placed on the opposite side of the wavy line of a cardboard box, etc.
・Handle...Constructed by assembling a push plate that presses the staple by operating the handle, and a claw that enters the opposite side of the wavy line to guide and bend the staple when the push plate 2 is displaced.

However, in the conventional stapler described above, the base of the stapler is formed by die-casting aluminum, which not only increases the unit cost of parts, but also makes it impossible to keep the wall thickness of each part below a certain limit. , it had drawbacks such as the inability to reduce weight.

In addition, in conventional staple binding machines, a built-up part is formed on the inner surface of the staple binding machine base as a stepped part to determine the mounting height position when installing the staple magazine. This method has drawbacks such as the weight of the stapler base being too heavy.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

Figs. 1 and 2 show a perspective view and an exploded perspective view of an embodiment of the stapler according to the present invention, respectively, and Figs. 3 and 4 show longitudinal cross-sectional views of the stapler in different usage modes.

In FIGS. 1 to 3, the stapler 1 is commonly referred to as a stapler, and the stapler base 2 is placed on the lined surface of the object to be stapled, such as a cardboard box 51. , . . . By pushing down the needle 3 by hand, the binding needle 4 is driven into the opposite side of the broken line to perform the binding, and a pair of claws 5 and 6 are provided to serve as a driving guide for the binding needle 4. This is why it is also called a movable floor type, which distinguishes it from a fixed floor type.

The binding needle 4 used is a one-shaped needle having a base portion 4a and leg portions 4b and 4c at both ends.

The stapler base 2 is press-molded from a thin steel plate, and has a horizontally long body 2.
A and a mounting portion 2b on the front surface of the body are integrally formed, and are much thinner and lighter than conventional aluminum die-casting.

The stapler 1 has a stapler magazine 7 and a mounting member 8 attached to the stapler base 2, and further includes a pawl receiver 9, pawls 5 and 6, a push plate tube 10, a press plate 11, a spring 12, etc. It is assembled by assembling the driving part 15 consisting of the grip catch 13, the bundle 3, etc.

Hereinafter, the configuration of each part will be sequentially explained.

The staple magazine 7 has a rectangular cylindrical body with an open top.
A plurality of the staples 4 are packed in a bundle and attached to the bottom surface of the body 2a of the wire pair machine base 2.

In this embodiment, two step portions 16 and 17 of the same height constituting the different parts of the present invention are protruded from the bottom surface of the body portion 2a of the wire pair machine base 2, and the staple magazine 7 is attached thereto. When the needle 4 in the needle magazine 7 is placed at a predetermined height with respect to the driving part 15 of the line pair machine base 2, its bottom part is abutted and supported by the two stepped parts 16 and 17. held in position.

The staples 4 filled in the staple magazine γ are held by the presser member 18.
The driving portion 15 is biased by the spring force of the spring 19 via the spring 19 .

Here, as mentioned above, since the bottom surface of the body 2a of the line-pair machine base 2 is formed with two stepped portions 16 and 17, the bottom surface of the body 2a is designed to have high strength against bending, twisting, etc. Ru.

Therefore, the decrease in strength, which is a problem caused by making the line pair machine base 2 thin, is sufficiently compensated for.

The mounting member 8 is constructed by fixing a pair of screw receivers 2L22 to a flat plate 20 having a shape that matches the mounting portion 2b of the wire pair machine base 2.

Embossed parts 20a for positioning are formed in several places on the flat plate 20, and these embossed parts 20a are press-fitted into the mounting parts 2b of the wire pair machine base 2 for positioning, and the appropriate parts are spot welded or the like. The flat plate 20 is fixed to the mounting portion 2b.

The flat plate 20 has an opening 20b that serves as a passage for the stapler 4, and a pair of locking pieces 23 on both sides of the lower end of the opening 20b.
, 24 are bent.

The locking pieces 23 and 24 prevent the line pair machine base 2 from falling down due to a change in the driving depth, which will be described later.

The screw receivers 21 and 22 are the claw receivers 9 or the bundle receivers 13.
etc., when assembling the wire pair machine base 2 to the wire pair machine base 2.
Female threads are screwed into the stepped portions 21a, 21b and 22a, 22b.

Since the heights of these stepped portions 21a, 2To, 22a, and 22b determine the distance between the claw receiver 9 and the flat plate 20, they are accurately set to predetermined dimensions.

Also, when the screw receivers 21 and 22 are assembled on the left and right sides of the flat plate 20, their opposing ends [fi21d and 22d are attached to the push plate 1
Since 10 passages are defined, the position of the assembly becomes an issue.

Therefore, in the case of this embodiment, the screw receivers 21 and 22 are provided with embossed portions 21c for positioning.

22c, and these embossed portions 21C and 22C are press-fitted into the flat plate 20, and the screw receivers 21 and 22 are respectively attached to predetermined positions.

The claw receiver 9 is made by drilling four oval holes 9a, which serve as screw holes, in a single steel plate, and forming a spring seat 26 by bending the lower end of a groove 9b drilled approximately in the center of the oblong holes 9a. be.

This spring seat 26 seats and locks one end of the coil spring 12, and therefore requires sufficient flatness, but the claw receiver 9 is separate from the wire pair machine base 2. Moreover, since the spring seat 26 has a flat plate shape, the spring seat 26 can be formed with extremely high precision.

In addition, by forming the spring seat 26 in the claw receiver 9 which is separate from the line pair machine base 2 in this way, the deformation force accompanying the compression of the spring 12 is transferred to the line pair machine base 2 as described later. It is possible to effectively prevent this from occurring.

27.2B is a pin integrally attached to the lower end of the claw receiver 9, and the claw 6 is rotatably supported by this pin 27.28.

For this reason, both the pins 27 and 28 need to be fixed perpendicularly to the pawl receiver 9 with sufficient precision. After this protrusion is driven into the claw receiver 9, the periphery of the head is fixed to the claw receiver 9 by welding for installation.

Therefore, not only can the pins 27 and 28 be installed perpendicularly to the claw holder 9, but the installation strength is much greater than, for example, when the pins are simply fixed with screws, and the pins 27 and 28 are not only fixed perpendicularly to the claw holder 9, but also have a much greater installation strength and are less susceptible to loosening due to backlash. It has the advantage that it can be reliably prevented.

In addition to the method described above, the pins 27 and 28 may be fixed by making the neck portions of the pins 27 and 28 through which the claw receivers 9 are inserted slightly smaller in diameter than the other portions.
8 may be inserted and held in the claw receiver 9, and then the portion surrounding the neck from one side of the claw receiver 9 is pressed into a ring shape, and the neck portion is tightened and fixed.

The claws 5 and 6 include claw bodies 5a and 6a which are held between the flat plate 20 and the claw receiver 9 and are rotatably displaced, and the claw bodies 5a.
, 6a and bent at a predetermined curvature.
It is roughly composed of 6b and 6b.

The claw bodies 5a, 6a are formed with pin holes 29, 30 through which the pins 27 and 28 are inserted, and the claw parts 5b,
6b is provided with pins 33, 34 near the root for pivotally supporting one end of the arm 31, 32.

The other end of the r-arm 3L32 is connected to the pin 35 of the push plate tube 10,
36, and the pawls 5 and 6 are pivoted about pins 27 and 28 by vertical displacement of the push plate tube 10.

The push plate 11 attached to the push plate pipe tube 10 is made of a flat plate material having a width that is approximately the same as the distance between the screw receivers 21 and 22. 2
The binding needle 4 is driven in by being guided between 1d and 22d and then being displaced downward.

A spring seat 37 is formed at the top of the push plate tube 10,
The other end of the coil spring 12 is abutted and locked on this spring seat 37.

Further, a pin 39 for pivotally supporting one end of the arm 38 is inserted and held near the spring seat 37.

The other end of this arm 38 is pivoted to the handle 3 by a pin 40, and as will be described later, when the handle 3 is rotated, the push plate tube 10 receives a downward force via the arms 31 and 32. is transmitted and causes a downward displacement.

The handle support 13 is roughly composed of a front cover part 13a and an upper cover part 13b, which are integrally molded from a sheet of thin steel plate by pressing.

The front cover part 13a has a rectangular box shape with one side open, and the screws 25 are inserted into four oblong holes 41 for screw insertion through washers 42 and toothed washers 43. It is attached to the front part of the counter-machine base 2.

At this time, the screw 25 is inserted through the oblong hole 9a of the claw receiver 9 and screwed into the screw receiver 21, 22 of the mounting member 8.

Here, since the front cover part 13a is box-shaped, it is strong against the deforming force applied during staple binding, and is not easily deformed.

The upper cover part 13b is provided with a bottle hole 45 through which a pin 44 that pivotally supports the end of the handle 30 is inserted, and a bottle hole 46 formed at the end of the handle 14 is inserted into the bottle hole. The bundle 3 is attached to the bundle receiver 13 by inserting the pin 44 in a state where it is aligned with the pin 45.

Numeral 47 is a stopper bolt for regulating the rotation limit position of the handle 3, and in this embodiment, it is attached by screwing into a nut 48 fixed to the inside of the upper cover part 13b.

The screwing position of this stopper bolt 47 is the stopper nut 4.
However, by changing the screwing position of the bolt 47, the amount of rotation of the bundle 3 is regulated. It can be changed as appropriate.

Reference numeral 50 denotes a reinforcing member for reinforcing the upper cover part 13b, which is applied to the inside of the upper cover part 13b and fixed by welding or the like.

The shape of this reinforcing member 50 is matched to the shape of the upper cover portion 13b, and the upper cover portion 13b is reinforced by the amount of reinforcement member 50 applied, so that when the handle 14 is rotated, the upper surface The upper cover portion 13b will not be unnecessarily deformed due to bending stress or the like applied to the cover portion 13b.

In the case of this embodiment, the nut 48 into which the stopper bolt 41 is screwed is fixed to the reinforcing member 50 by welding, but a threaded portion into which the stopper bolt 47 is screwed is formed in the upper cover part 13b, and the nut 48 is provided. Alternatively, the stopper bolt 47 may be attached by screwing into the threaded portion.

Next, the operation of the above-mentioned component device will be explained.

When stitching, the line pair machine base 2 is placed on the surface of the cardboard box 51 or the like to be sewn.

Then, hold the front cover part 13a of the bundle receiver 13 or the body of the line pair machine base 2 with your left hand, and push down the bundle 3 from above.

... The handle 3 rotates around the pin 44, and at the same time the push plate 11 compresses the spring 12 and presses the screw receiver 21.
and the screw receiver 22.

With the downward displacement of the push plate 11, the claws 5 and 6 are moved to the pins 27, respectively.
, 28, and the claw portion 5b.

6b enters into the portion paired with the broken line so as to embrace the broken line sealed portion from both sides.

As the claws 5 and 6 enter, the push plate 11 moves the base 4 of the binding needle 4.
a and press it downward.

As a result, both leg portions 4 b and 4 c of the stapler 4 enter the broken line sealed portion and are guided and bent along the arcuate surfaces of the claw portions 5 b and 6 b, and the broken line sealed portion is connected to the base portion 4 a and the leg portions 4 b and 4 c. They are clinched between them.

When the bundle 3 is pushed down until it touches the tip of the bolt 47, -. When the force applied to the bundle 3 is released,
... The handle 3 is rotated back to its original position by the force of the spring 12.

Here, force is transmitted to the claws 5 and 6 by the arms 31 and 32, respectively, and resistance is received from the cardboard box 51 when the claw portions 5b and 6b enter the area facing the broken line.

However, both the claw wooden bodies 5a and 6a are held between the flat plate 20 and the claw receiver 9 with their surfaces in contact with each other,
Therefore, it is guided by the flat plate 20 and the claw receiver 9, and is accurately rotated along a predetermined - plane without any play.

Also, at this time, the pin 27.2, which is the center of rotation of the claws 5 and 60,
A shearing force along the displacement direction of the push plate 11 is applied to 8.
As mentioned above, the bottles 27 and 28 are integrally and firmly fixed to the pawl receiver 9, so that they do not wobble, and the pawls 5 and 6 always rotate along a predetermined rotation trajectory. .

Further, the force applied to the claws 5 and 6 acts on the claw receiver 9, but this claw receiver 9 is separate from the stapler base 2 and is made of a strong dog member. It will not be deformed by force.

Since the claw receiver 9 itself is made of a member that is difficult to deform, the spring force of the spring 12 acting on the spring seat 26 formed integrally with the claw receiver 9 can be well received.

In this way, most of the force that each part in the line pairing part 15 must receive is concentrated in the claw receiver 9, and therefore, the needle binding machine has a certain level of strength due to press molding. Thin parts such as the base 2 can be reliably protected from deformation.

Also, when the handle 3 is rotationally displaced, a force is applied to the front cover part 13a of the handle receiver 13 to cause it to protrude forward around its center. The portion 13a has a box shape and is therefore strong against this kind of force, and does not have the disadvantage of being easily deformed due to its thin wall.

In general, when the handle 3 is brought into contact with the stopper bolt 47, the largest force is applied to the handle receiver 13 during the line pairing operation, but the reinforcing member 50 is attached to the top cover part 13b. There is no risk of deformation since it is a pre-installed structure, and since the front cover portion 13a is also box-shaped, there is no possibility of deformation.

Next, the operation when changing the clinch shape or the driving depth of the staple 4 driven by the staple binding machine 1 will be explained.

When the stopper bolt 47 is turned in the direction in which the screw is loosened relative to the handle holder 13, the amount of rotation of the handle 3 is increased, and the claws 5b of the claws 5 and 6 are aligned.

6b enters deeply into the part to be sewn, so the leg part 4b.

The binding needle 4 is bent in a state where 4c is close to the base 4a, resulting in a tight clinch.

Conversely, when the stopper bolt 47 is screwed into the inner part of the handle receiver 13, the amount of rotation of the handle 3 is reduced, and the claws 5b and 6b are attached to the part to be sewn. Since the leg portions 4 b t 4 c do not enter the base portion 4 a very much,
The binding needle 4 is bent in a state separated from the holder, forming a loose clinch.

In this way, in order to change the clinch state of the staple 4, the screwing depth of the bolt 47 is changed, but when changing the driving depth of the staple 4, it is necessary to attach the driving part 15 to the staple machine base 2. changes the height position.

The driving part 15 is connected to the screw receiver 2L22 by four screws 25.
It is fixed to , and is inserted through the oblong hole 41 .

Therefore, for example, when the thickness of the part to be sewn is small as shown in FIG. 4, and it is desired to make the driving depth of the binding needle 4 shallow,
Once the screw 25 is loosened to make the driving part 15 movable, it is moved above the stapler base 2 and fixed at that position by tightening the screw 25.

As a result, the driving part 15 is located higher than before with respect to the stapler base 2, and when the base 2 is placed on the surface to be sewn, a gap is created between the driving part 15 and the surface facing the broken line. .

In this case, a locking piece 23 is provided at the lower end of the front surface of the stapler base 2.
, 24 are formed and are in contact with the surface to be sewn, so that the inconvenience of the needle binding machine base 2 falling forward when force is applied to the needle 3 during binding can be effectively prevented. I can do it.

In the above embodiments, the needle binding machine 1 was explained by taking as an example the needle binding machine 1, which is a so-called manual type that staples the needles by operating the handle, but the invention is not limited to this. The present invention can also be applied to a stapler with a configuration of:

In addition, in the above embodiment, the stapler base 2, the needle holder 1
3 and the like are molded from thin steel plates by pressing, but they may be manufactured from other members by other methods.

As mentioned above, in the staple binding machine according to the present invention, the staple binding machine base is integrally formed with a stepped part on the inner surface thereof which contacts the bottom surface of the staple magazine and determines the installation height position of the magazine. Since it is formed in a protruding state, there is no need to form a build-up for positioning on the inner surface where the staple magazine is attached, and the weight can be kept low, and the stepped part is press-molded with the wire pair machine base. Since it is extremely easy to manufacture, the number of manufacturing steps can be reduced considerably, and the protruding stepped portion also improves the strength of the magazine attachment part of the line pair machine base. It has the following features:

[Brief explanation of the drawing]

Figures 1 and 2 are a perspective view and an exploded perspective view of an embodiment of the wire pair machine according to the present invention, respectively, and Figures 3 and 4 are longitudinal cross-sectional views of the wire pair machine in a husband-and-wife usage mode. . 1... Line pair machine, 2... Line pair machine base, 4... Staple,
1... Staple magazine, 16,1γ... Stepped portion.

Claims (1)

[Scope of utility model registration request] A magazine filled with staples is attached to the inner surface of the staple binding machine base so that the staples can be sent forward of the base, and a push plate is provided in front of the base that moves in conjunction with the needle operation. In a stapler that is equipped with a staple driving part such as a claw and drives the fed staple into the broken line sealing part, the stapler base is formed by press molding to form the inner surface of the stapler. A stapler is formed by integrally protruding a stepped part that comes into contact with the bottom surface of the magazine to determine the mounting height position of the magazine.