JPS6281227A - Clip caulking device - Google Patents

Abstract

PURPOSE:To form a net with a clip at a low cost by performing mechanically, quickly and exactly a caulking work of the clip. CONSTITUTION:A U-shaped clip 3 is supplied continuously from a parts feeder 12 to a necessary part of a net which has been transferred to a net placing base 10. The clip 3 is caulked to the net by a clip mechanism 13, and the net to which the clip 3 has been caulked is fed intermittently by a prescribed distance by a net intermittent feeding mechanism 40, and transferred to a conveyor 14. It is carried to a loading device 15 from the conveyor 14. These consecutive works are brought to a programming control by an operating panel 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a clip caulking device, and more specifically,
A clip caulking device that can mechanically and fully automatically caulk metal clips at necessary locations on synthetic rubber snow nets that are attached to tires to prevent vehicle slipping on snowy roads in winter. It is related to.

BACKGROUND OF THE INVENTION When driving a car on snowy roads in winter, metal chains are generally wrapped around the tires to prevent slippage between the tires and the road surface. However, conventional metal chains have drawbacks such as generating a lot of noise and damaging the road surface when driving on a snow-free road surface, and also not providing a comfortable ride due to large vibrations.

Therefore, as an alternative to the conventional metal chain, as shown in Fig. 6, a snow net 1 (hereinafter simply referred to as "snow net") is made of a special synthetic rubber material that is highly flexible and durable against mechanical stress and is formed into a net shape. The use of the Internet (referred to as the "Net") has recently become widespread. This net 1 has many excellent advantages, such as being easy to attach and detach from the tires 2, producing no noise or vibration that makes the ride uncomfortable, and not being damaged even when driving on roads with little snowfall. ing. However, even when this net 1 is attached to the tire 2, when driving on a snow-covered road where the road surface is hard frozen and has become an ice burn state, the net 1 cannot reliably grip the frozen surface. Therefore, there is an inconvenience that the driving performance of the vehicle deteriorates unstably.

To deal with this inconvenience, as shown in Fig. 7, metal clips 3 are caulked to the required positions of the net 1, thereby improving the grip performance of the clips 3 on frozen surfaces when driving on ice. Recently, technology has been adopted to achieve stable driving. Therefore, it is necessary to caulk the metal clips 3 to key points of the net 1, but this work has traditionally been done manually one by one using pliers, etc. It requires a lot of effort and time. Moreover, the clips used for this are made of a special alloy that has been hardened and quenched to increase durability, so it is extremely difficult for five people to swage them together, so the manufacturing cost of this type of net with clips is low. It is quite expensive.

OBJECTS OF THE INVENTION The present invention has been proposed in order to suitably solve the above-mentioned problem inherent in the work of caulking clips at key points of the tire mounting net, and has the following objects: The object of the present invention is to provide a clip crimping device that can mechanically perform the difficult lip crimping work that has conventionally been done manually.

Structure of the Invention In order to achieve the above object, the clip crimping device according to the present invention includes a parts feeder that supplies clips formed in a U-shape, and a clip holder that temporarily holds the clips sequentially supplied from the parts feeder. a mechanism, a net mounting table on which a tire mounting net is placed one by one, and a desired position of this net is aligned with a clip held by a clip holding mechanism; a first pressing means for pressing, a caulking means for bending both legs of the clip pressed against the net inward, and a first pressing means for pressing both legs of the bent clip on the back side of the net to fix the clip to the net. It is characterized by comprising two pressing means.

Embodiment Next, a preferred embodiment of the clip crimping device according to the present invention will be described with reference to FIGS. 1 to 5.

FIG. 1 is an external view showing the overall configuration of a line equipped with a clip crimping device according to an embodiment of the present invention. In FIG. 1, a predetermined number of nets (not shown) are stacked on a stand 7 of a stack feeder 6 provided on the left side of a clip crimping device 5, which will be described later, before clips are attached.

This net is transferred one by one onto a roller conveyor 9 by a transfer device 8 disposed close to the stack feeder 6, and then transferred by the conveyor 9 onto a net a placement table 10 for attachment of clips. . The transfer device 8 is
For example, a pair of hands 8a and 8b are provided, and these hands grip and release the net 1, and also perform a type of block motion that can move horizontally and vertically, and move the net 1 to the stack feeder 6. Platform 7
After lifting it from above, it is conveyed horizontally to reach above the conveyor 9, and then lowered and placed on the conveyor. A series of cycles is repeated.

Further, the net mounting table 10 is used to place a net for tire attachment one by one, and align the desired position of this net with a clip held by a clip holding mechanism which will be described later.

U-shaped clips 3, which are continuously supplied from the parts feeder 12, are caulked at required locations on the net 1 transferred to the net mounting table 10 by a clip mechanism 13, as will be described later. The net to which the clip 3 is attached is intermittently fed by a predetermined distance by a net intermittent feeding mechanism 40 shown in the figure, so that the next caulking area reaches the clip mechanism 13. After all the crimping work has been completed, the net 1 is transferred to the conveyor 14, and then conveyed from the conveyor 14 to the illustrated loading device 15. Note that this series of operations is controlled by programming using the operation panel 11.

A longitudinal sectional view, a cutaway side view of the main part, and an exploded perspective view of the main part of the clip mechanism 13 are shown in FIGS. 2, 3, and 4, respectively. In FIG. 2, a sliding body 17 is inserted into a cylindrical housing 16 located above the clip mechanism 13. A clip guide hole 18 is vertically bored in the center of the sliding body 17, and the clip 3 is fed into the clip guide hole 18 through a chute 12a led out from the parts feeder 12 and a passage 19.

The supplied clip 3 is attached to the sliding body 17 in this embodiment.
It is temporarily held by a clip holding mechanism consisting of a permanent magnet 20 embedded in the. Further, a shutter 21 that moves up and down along the surface of the housing 16 is disposed at the opening of the passage 19 on the housing 16 side, and the opening/closing operation of the shutter 21 causes the clips 3 to be delivered to the clip guide hole 18 one by one. Supplied individually.

A plate-shaped press rod 22 (see FIG. 4) is slidably inserted into the clip guide hole 18 of the sliding body 17 from above. A cylinder 23 is connected to the upper part of the press rod 22, and when the cylinder 23 is moved downward by hydraulic pressure, the sliding body 1
7 moves downward together with the push rod 22 via the elastic spring 24, comes into contact with the net mounting table 10, and stops. Further, when the cylinder 23 moves downward against the elastic spring 24, the push rod 22 comes into contact with the upper surface of the sliding body 17 and stops.

The lower housing 27 of the clipping machine [13] has claw members 28 and 29 that act in the direction of bending the tip of the clip 3, respectively, and have claw members 28 and 29 that are formed in the shape of the letter ``H'' as a whole. are arranged opposite to each other and are rotatably supported by pins 30 and 31, respectively. A press rod 32 having the shape shown in the figure is disposed between these claw members 28 and 29, and a cylinder 33 connected to the lower part of the press rod 32 is driven up and down by hydraulic pressure, so that the press rod 32 is configured to move up and down. Further, on the press rod 32, two rollers 34 and 35 that are in contact with each other are provided with pins 36 and 35, respectively.
The rollers 34 and 35 are arranged rotatably through the rollers 34 and 35
As will be described later, the claw members 28 and 29 are brought into contact with bulges 28b and 29b formed on the inner surfaces of the pair of claw members 28 and 29 at a predetermined timing, thereby closing the claw members 28 and 29. Reference numerals 38 and 39 in FIG. 3 indicate elastic springs that elastically urge the claw members 28 and 29 in the opening direction to separate them from each other.

The operation of the clip mechanism configured in this way is shown in Fig. 5 (
This will be explained with reference to a) to (e). First, as shown in FIG. 5(a), the clip guide hole 18 of the clip mechanism 13 is
The portion of the net 1 to be caulked is located directly below the net. Also, the clip 3 supplied from the parts feeder 12
is held in the clip guide hole 18 as shown in FIG. 5(a), hydraulic pressure is applied to the cylinder 23 shown in FIG. 22 begins its downward movement. At this time, the sliding body 17 moves downward together with the pusher rod 22, and first the net 1 is placed on the net mounting table 10 in FIG.
It stops after being pushed in between to prevent movement. Furthermore, the press rod 22 moves downward against the resilient spring 24, but the press rod 22
Since the lower end portion 22a is recessed to match the shape of the head of the clip 3, the clip 3 is stably held and lowered into the clip guide hole 18.

The press rod 22 is attached to the clip 3 at its lower end 22a.
As shown in Figure 5(c),
When the clip 3 is pressed against a required location on the net 1 and fixed between the two clip legs, the push rod 32 disposed below is then moved downward under the action of the cylinder 33. When the push rod 32 is lowered by a predetermined stroke, Fig. 5Cd)
As shown in FIG.
It abuts against the bulges 28b and 29b formed at the lower part of the inner side of the 9.

While rotating, the claw members 28.29 are urged around the pins 30.31, thereby causing the caulking portion 28a.

29a are rotated in the opening direction so that they approach each other.

Therefore, the caulking parts 28a and 29a grasp both legs of the clip 3 that protrudes and extends below the net 1, and carry out a caulking operation of bending them inward.

When bending both legs of the clip 3 in this way, in this embodiment, the bulges 28b and 29b formed on the lower side of the claw members 28 and 29 are expanded by the rollers 34 and 35 that are in contact with each other. The caulking work can be accomplished satisfactorily without applying excessive force to the rod 32'. Following the second crimping operation, when the cylinder 33 is reversely biased and the push rod 32 is moved upward, both legs of the bent clip 3 are
As shown in @(e), the clip 3 is pressed by the upper end of the press rod 32, and the clip 3 is firmly crimped to the portion of the net 1 to be crimped. At this time, the claw members 28°29 are
They are returned to their original positions by the return elasticity of the elastic springs 38 and 39 (FIG. 3) described above.

As mentioned above, the clip caulking device according to the present invention has been described based on the illustrated embodiment, but it goes without saying that the present invention is not limited to this embodiment. for example,
Instead of using hydraulic pressure as the pressing means, the rotating output of a prime mover or the like may be replaced with pressing force, and the clip holding mechanism may be a temporary holding mechanism with an electromagnet or mechanical structure instead of a permanent magnet. Good too.

Effects of the Invention According to the present invention, the difficult lip caulking work, which conventionally relied on manual labor, can be mechanically performed quickly and reliably, making it possible to manufacture a net with clips at low cost and uniformly. This produces a net with an excellent appearance.

[Brief explanation of drawings]

FIG. 1 is an overall external view of a production line equipped with a clip crimping device according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the clip mechanism shown in FIG. 1, and FIG. 3 is a main part of the clip mechanism. A side view, FIG. 4 is an exploded perspective view of the clip mechanism, and FIG.
Figures a) to 5(e) are explanatory diagrams of the operation of the clip mechanism over time, Figure 6 is an external view of the tire with the net attached, and Figure 7 is a plan view of the net with the clips attached to the required parts. . 1... Net 2... Tire 3...
Clip 5... Clip caulking device 6... Stack feeder 7... Stand 8... Transfer device 9... Roller conveyor 10... Net mounting stand 11... Operation panel 12... Parts feeder 13...Clip mechanism 16...Upper bousing 17...Sliding body 18...Guide hole
19... Passage 20... Permanent magnet 2
2...Push rod 23...Cylinder 24...
Resilient spring 25... Pin 26... Elongated hole 27... Lower housing 28.29... Claw members 28a, 29a... Caulked portions 28b, 29b... Swelling portion 30.31... pin 3
2... Push rod 33... Cylinder 34, 35... Roller 36. 37... Pin 38. 39... Resilient spring FIG, 6 FIG, 7

Claims (1)

[Claims] A parts feeder that supplies clips formed in a U-shape, a clip holding mechanism that temporarily holds the clips that are sequentially supplied from the parts feeder, and a net for mounting a tire to one piece. a net mounting table for placing the net at a desired position on the net and aligning the desired position with the clip held by a clip holding mechanism; a first pressing means for pressing the clip while straddling the net at a desired position; A crimping means for bending both legs of the bent clip inward, and a second pressing means for pressing both legs of the bent clip against the back side of the net to fix the clip to the net. Features a clip caulking device.