JPS6037267Y2 - Crimping gun for fasteners - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crimping gun for continuously attaching adhesive-coated flat strips called fasteners to objects to be adhered.

Fasteners are used, for example, as fixing members for decorative window moldings on vehicles.

That is, an appropriate number of fasteners are adhered to the inner periphery of the window frame, and the window molding is fitted and fixed to these fasteners.

The present invention is used, for example, for crimping such a fastener onto the inner periphery of a window frame, but of course its use is not limited thereto.

At present, there is no continuous automatic crimping gun for such fasteners, and the operator peels off the fasteners affixed to release paper one by one, presses them onto the object to be adhered (for example, the inner circumference of a window frame), and then crimps them with a hand roller. It relies on extremely primitive manual labor.

However, it is said that the workability is extremely poor and not only requires a large amount of work time and labor, but also that the entire adhesive surface of the fastener is not evenly attached to the object due to the uneven pressure force, resulting in an unsightly appearance. There was a problem.

With this background in mind, the present invention was developed to provide, attach, and supply fasteners.
It is an object of the present invention to provide a crimping gun with a simple structure that can perform crimping continuously.

The explanation will be given below according to the drawings.

5 and 6 show an example of a fastener 50 used in the present invention, in which an adhesive layer 55 is provided on one surface of a strip-like main body 51.

A wind molding (not shown) is inserted between the main body 51 and a tongue piece 53 provided on the other surface of the main body 51.

The crimping gun according to the present invention is used, for example, to fix the adhesive layer 55 of a fastener 50 as shown in FIGS. 5 and 6 to an object to be bonded, such as a window frame (not shown).

The crimping gun according to the present invention has a handle 1 as shown in FIGS. 1 to 3.
It has a plate-shaped main body 6 with 9.

The main body 6 has a groove 31 in its lower part, into which the slider block 5 is slidably fitted.

The main body 6 has a protrusion 33 forming a guide rail, and the slider block 5 is guided and slid along the protrusion 33.

The crimping gun has a symmetrical shape with the center line LL shown in FIG. 3 as the axis of symmetry.

Further, the main body 6 has a protrusion 26 on its upper surface that forms a guide wall for the fastener 50.

The fastener 50 is a removable cassette (fastener loading member) 1
The cassettes are placed side by side in 4 and can be attached and detached together with the cassette.

The fastener 50 moves within the cassette while being guided by the protrusion 26.

A button 15 is pressed against the last fastener 50.

The button 15 is a miniature cylinder 1 attached to the main body 6.
It is connected to the piston rod 35 of No. 6.

The front row fastener 50 is pressed against a stopper 12, which will be described later.

The slide block 5 is connected to a piston rod 24 of another cylinder 17 (main cylinder) attached to the main body 6, so that it can move back and forth within a groove 31 of the main body 6.

Main cylinder 17 is preferably a double-acting cylinder,
A valve 20 switches the hydraulic circuit.

The switching operation of the valve 20 is performed by the switch lever 18.

The cylinders 16,17 are preferably air cylinders, but may of course also be hydraulic cylinders or other drive devices.

A constant pressure controlled by a regulator 25 is supplied to the cylinder 16, so that the fastener 50 is always pressed against the shutter 22 with a constant pressure.

An abbreviated cam plate 9 is fixed to the lower part of the slide block 5.

The cam plate 9 has oblique long holes 39 on both sides thereof, as shown in FIG.
A roller 8 pivotally supported by a link arm 7 is fitted into the link arm 7.

Therefore, the link arm 7 can swing around the pivot pin 10 while the roller 8 rolls in the elongated hole 39 in accordance with the back and forth movement of the cam plate 9.

That is, in FIG. 1, when the cam plate 9 moves to the right (backward) together with the slide block 5, the link arm 7 rotates clockwise around the pivot pin 10, and conversely, the cam plate 9 moves to the left ( forward) and link arm 7 are pivot pin 1
Rotates counterclockwise around 0.

A U-shaped groove 41 is formed at the tip of the link arm 7.
A roller 4 having an H-shaped cross section is fitted into the groove 41 and is rotatably supported at both ends of a roller shaft 27 fixed to a plate-shaped shutter 22 constituting a fastener separating device.

That is, the roller 4 is composed of a small diameter roller 4A and large diameter rollers 4B located on both sides of the small diameter roller 4A.
It is fitted into the groove 41 and rolls.

The roller 4 is therefore laterally movable within the U-shaped groove 41 relative to the link arm 7.

The shutter 22 is fixed to the roller shaft 27 by, for example, a bolt 43.

The shutter 22 has a blade 22A at its lower end so that the tightly attached fasteners 50 can be easily separated one by one.

A stopper 12 is fixed to the front part of the main body 6, and the front row fastener 50 is pressed against this stopper 12.

A guide wall 23 is formed on the stopper 12 to ensure vertical vertical movement of the shutter 22.

As a result, the shutter 22 is connected to the stopper 12 and the guide wall 23.
It is possible to move vertically up and down while being held between the two.

When the link arm 7 rotates around the pivot pin 10, the tip of the link arm moves in an arc around the pivot pin 10, so normally the shutter 22 also moves in an arc and cannot move vertically downward.

However, the shutter 22 is connected to the U-shaped groove 4 of the link arm 7.
Since the shutter 22 is fixed to the roller shaft 27 of the roller 4 that can roll within the stopper 1, it moves horizontally little by little together with the roller 4 while descending.
The robot moves up and down along a vertical movement path defined by the guide wall 23 and the guide wall 23.

That is, when the link arm 7 is in the uppermost position 7', the roller 4' is in the position 4' moved near the outer end of the U-shaped groove 41 of the link arm 7, and therefore the shutter 22 is always in the position of the frontmost fastener. 50 vertically upper positions 22' (2
2) is located on the same straight line as 2.

A fastener guide protrusion 3 is formed in the lower part of the main body 6 in front of the slide block 5, and the fastener 50 pushed down by the shutter 22 is temporarily positioned and set at a crimping preparation position by this protrusion 3.

A plate-shaped fastener receiver 1 is provided in front of the guide projection 3, and a plate 1 forms a ceiling guide wall of the fastener receiver 1.
1 and bring the fastener 50 to the exit Ex while keeping it positioned.

Note that 21 is a stabilizer rod that connects both link arms 7, and ensures that both link arms 7 perform stable and equal rotational motion at the same time without eccentricity.

The operation of the crimping can constructed as described above is as follows.

First, when the switch lever 18 is released, a valve 20 causes air from an air source (not shown) to enter one cylinder chamber (not shown) of the main air cylinder 17 and cause its piston rod 24 to contract.

As a result, the slide block 5 connected to the piston rod 24 moves backward inside the concave groove 31 of the main body 6 to the right in FIG.
The link arm 7 in this position is lowered (moves counterclockwise around the pivot pin 10).

At this time, the shutter 22 attached to the tip of the link arm via the roller 4 is vertically lowered while being positioned by the stopper 12 and the guide wall 23, and first the blade edge 22A
This cuts off only the forwardmost fastener and then pushes it down and into the guide projection 3 below.

That is, the fastener is brought into a crimping ready position.

Next, when the switch lever 18 is pulled (actuated), the valve 20 is switched, air is supplied to the other chamber (not shown) of the cylinder 17, and the piston rod 24 moves forward.

Therefore, the slide block 5 moves forward, and the link arm 7 rises due to the action of the cam plate 9, rotating clockwise about the pivot point 10, and as a result, the shutter 22 rises vertically.

As a result, the shutter 22 returns to the 22' position with one fastener remaining in the guide projection 3.

At this time, the frontmost fastener 50 located in the cassette 14 is again pressed against the stopper 12 and ready for the next crimping.

At the same time, the front end of the slider block 5 that is moving forward comes into contact with the fastener left in the guide protrusion 3, pushes it out of the guide protrusion 3, and pushes it out from the exit Ex while maintaining its posture by the fastener receiver 1 and plate 11. It will be done.

In this way, the fastener is pressed against the adhesive surface of the adhered object located at the exit Ex.

It goes without saying that the fasteners 50 are arranged in the cassette 14 with their adhesive layers 55 facing forward.

As described above, according to the present invention, by repeating the operation of the switch lever 18, a large number of fasteners can be continuously crimped at a predetermined location with a constant pressure.

FIG. 4 shows a second embodiment of the present invention, in which the fastener transfer mechanism is changed from a cam type to a drum type.

A brief explanation of the differences from the first embodiment is as follows.

That is, a fastener supply roll (fastener loading member) 65 and a take-up roll 67 are rotatably attached to support brackets 61 and 63 installed on the main body 6, respectively.

The supply roll 65 holds the fastener 50 with release paper 60 at predetermined intervals.
The paper is pasted on the zipper and then wound into a roll several times.On the other hand, the take-up roll 67 is made by winding up only the release paper after the fastener 50 has been peeled off.

For example, an air cylinder 1 is attached to the rotation shaft 68 of the take-up roll 67.
A rotational force is constantly applied in the roll winding direction by an air motor (not shown) driven by air supplied from the same air source as 7.

Therefore, the release paper 60 is always pulled in the direction of the arrow.

The movement path of the release paper 60 is a guide 71 provided in the main body 6,
It is appropriately formed by an idle roller 73 or the like.

The guide 71 controls the direction of the release paper 60 at this part, for example, at 90 degrees.
``It has the role of converting and easily peeling off the fastener 50.

The separated fasteners 50 fall freely one by one along the guideway walls 73, 74 and are brought to the guide projection 3 shown in FIG.

The subsequent crimping method using the slider block 5 is exactly the same as in the first embodiment.

In the embodiment shown in FIG. 4, the bushing 15, its drive cylinder 16, and regulator 25 are also not required.

Further, the shutter 22 is also unnecessary.

In any of the above embodiments, it is preferable that each part be made of lightweight resin material such as plastic as much as possible in order to reduce weight.

As described above, according to the present invention, a worker can automatically supply and crimp fasteners by simply loading the fasteners set in a cassette into a crimping gun, which can significantly reduce working time and labor. Moreover, anyone can easily and reliably perform the crimping operation without requiring any skill.

In addition, by combining the crimping gun of the present invention with a general-purpose robot, fully automatic bonding of fasteners becomes possible.

In this case, since the crimping gun of the present invention is small and lightweight, the general-purpose robot used can also be small and equipment costs can be kept low.

Furthermore, especially in the second embodiment, since link mechanisms such as link arms and cam plates are not required, it can be expected that failures and the number of parts will be reduced.

[Brief explanation of drawings]

Fig. 1 is a side view of the crimping gun according to the present invention, and Fig. 2 is a side view of the crimping gun according to the present invention.
Partial cross-sectional plan view of the figure, Figure 3 is the front (right half) of Figure 1
- Rear (left half) vertical sectional view, Figure 4 is a side view showing the main parts of the second embodiment of the present invention, Figure 5 is a front view showing an example of the fastener used in the present invention, and Figure 6 is a front view showing an example of the fastener used in the present invention. V in Figure 5
I-VI line sectional view. 4... Guide roller, 5... Slider block, 6... Body, 7... Link arm, 9... Cam plate, 4 ...Cassette, 17...Cylinder, 22...Shutter, 50...Fastener.

Claims (1)

[Scope of utility model registration request] A main body having a handle; a slider slidably disposed within the main body; a drive device for operating the slider; a fastener loading member stocked with a large number of adhesive-coated fasteners and detachably attached to the main body; a fastener separation and transfer device that picks up the fasteners one by one from the fastener loading member and brings them to a crimping preparation position in front of the slider;
A crimping gun for fasteners that is capable of continuously crimping fasteners to an object by pushing out the fasteners in a crimping preparation position by the slider.