JPH0724237Y2 - Apparatus and punching die for punching holes in the outer periphery of an old tire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for forming a hole in the outer circumference of an old tire, and the tire is connected by a metal fitting using the hole formed in the tire. Then, the three-dimensionally connected tires are submerged in the sea to serve as a fish reef for collecting fish, or installed on a sandy beach or the like to be used as a sabo block for preventing erosion of the sandy beach.

(Prior Art) In order to protect and nurture fishery resources by securing a place for living of fish, a three-dimensional object is sunk in the sea to install an artificial fish reef. Conventionally, as the artificial fish reef, a three-dimensional concrete product such as a tetra pot is often dumped into the sea and installed. When a concrete product is submerged in the sea and used, due to the nature of the material,
Although there is no concern about rusting or the like, on the other hand, since it is heavy and easily broken, it is inevitable that the three-dimensional structure has a large-weight, thick-bone structure. If the concrete fish reef is installed on the seabed of the sandy ground, it will be buried in the sand in a short period of time and it will not be able to function as a fish reef. On the other hand, throwing a large amount of such concrete products into the sea itself has a problem in terms of effective use of resources.

(Purpose of the Invention) Therefore, a technique for constructing the above fish reef by using old tires instead of the concrete product fish reef was developed. In today's car society, there are countless old tires,
Focusing on these old tires, a plurality of these old tires are connected through metal fittings to form a three-dimensional structure to form a fish reef. The fish reef formed in this way is relatively light and therefore does not get buried in the sand and is useful as a sabo block, and by using old tires, it is possible to effectively utilize the used resources.

By the way, the tires must be connected to form a shape suitable for a fish reef and a sabo block, and for that purpose, a hole through which a metal fitting used for connecting each old tire should be inserted is formed in the outer periphery of the old tire. Set up. A drill generally used in the related art may be used for forming the hole, but the drilling process takes time and the workability becomes low. Therefore, the present invention is to provide a device for efficiently forming a hole on the outer circumference of a tire.

(Structure of the present invention) The hole punching device of the present invention raises the post on the base,
An arm is attached to the upper end of the post and a support is attached to the middle of the post. Further, a lifting platform is attached to the post. The arm is attached to the post in a state of being horizontally rotatable, and an upper die is attached to the end of the arm. Then, the upper mold is moved up and down by a cylinder attached to the arm.
On the other hand, the lower die is fixed to the support base and works in pairs with the upper die. In this case, the upper mold may be fixed to the arm end, and the lower mold may be configured to be movable up and down.

By the way, the tire is compressed by the upper mold and the lower mold to form a predetermined hole, but the upper mold projects a cutting blade on the outer periphery of the tip, and the cross section of the cutting blade is a right-angled triangle having an inward slope. On the other hand, the lower mold has a smaller outer diameter than the upper mold and has a cylindrical shape having a cutting edge at its tip. Further, the cross section of the cutting edge is a right triangle having an inclined surface inside.

(Operation) When the hole punching device and the mold are configured as described above, when the hole is drilled on the outer circumference of the tire, the tire is lowered and placed on the lift table located on the base. Is raised to hang the tire on the support base and the lower mold. Needless to say, the tire is lifted in an inclined state, and is vertically erected at a predetermined height to be suspended and installed on the lower mold. After hanging the tires, the lift descends, lowers the upper mold with a cylinder while rotating the arm to a predetermined position, compresses the tire by sandwiching it with the lower mold, and drilling holes. To process. In this case, the upper and lower cutting blades form holes accurately. After the hole is drilled, the tire must be lifted and released from the lower mold, and the lifting platform is reused for this tire removal operation.

Embodiments according to the present invention will be described below in detail with reference to the drawings.

(Example) Before explaining the hole drilling device of this invention, the specific example of the fish reef comprised by an old tire is shown. FIG. 3 is a specific example showing this old tire fish reef, and a large number of old tires 11, 11, ... Are connected to each other to form a three-dimensional structure as a whole. Old tire 1
There are various conceivable forms of connection of 1, 11, ..., And FIG. 3 is only one example. And each old tire 11, 11
Connection metal fittings 12 and 13 are used for connection of the ... Metal fittings 12 and 13 are connected to the old tires 11 and 11 by passing through holes formed in an outer peripheral portion 14 of the old tire 11 as shown in FIG. To do. 4 shows the case where the old tires 11, 11, ... Are connected in a cross shape, but it may be a T-shape, and in any case, a hole 15 formed in the outer peripheral portion 14 of the old tire 11 Is used.

Therefore, in order to form an old tire fish reef, a hole 15 must be drilled in the outer peripheral portion 14 of the old tire 11 as shown in FIG. 5, and this hole drilling device is used in FIGS. , C. Although the hole punching device shown in the figure is a kind of special-purpose machine, it is a device intended to improve the workability of the hole punching process and the hole accuracy. In the figure, 16 is a base, 17 is a post, 18 is an arm, and 19 is a support base.The above post 17 stands upright on the base 16, and the arm 18 is attached to the upper end of the post 17, The support base 19 is fixed to the middle position of the post. The arm 18 is attached to an attachment table 20 fixed to the upper end of the post 17, and is pivotally supported by a shaft 21 provided on the attachment table 20. A handle 22 for turning the arm 18 is attached to the tip of the arm 18, and a handle 23 for blocking and locking the turning motion is provided on the side of the arm. A stopper 24 extends from the post 17 and restricts the pivotal movement of the arm 18.

In this way, the hydraulic cylinder 25 is attached to the tip of the arm that is allowed to turn in the vertical direction, and the upper die 26 is fixed to the tip of the piston rod of the hydraulic cylinder 25. On the other hand, since the lower die 27 is fixed to the side of the support base 19, the support base 19 extends horizontally at the intermediate height of the post 17, and the upper end of the receiver 28 fixed upright on the support base 19. Be attached to. In addition, the post 17 has an elevator 29 attached,
The elevating table 29 is connected to a piston rod 31 of an elevating cylinder 30 having one end attached to the base 16 and moves up and down by the action of the elevating cylinder 30. When moving up and down, it is regulated by the guide rollers 32a and 32b, and a smooth movement is given along the post 17.

By the way, when a hole 15 is formed in the outer peripheral portion 14 of the old tire 11 by using the hole drilling device of the present invention, the old tire 11 is mounted on the lifting table 29 as shown by a chain double-dashed line in FIG. Can be placed at an angle. Therefore, although the upper part of the old tire 11 must be supported by a worker by hand, the lifting table 29 is raised with this tilted and raised vertically at a predetermined height to be supported in the central space of the old tire 11. Put the table 19 and lower mold 27. Then, when the elevating table 29 is lowered, the old tire 11 is suspended by the supports 33a and 33b formed by projecting to the left and right of the lower mold 27 and the supporting table 19. FIG. 1b shows this state. The lower mold 27 is in contact with the inner peripheral surface of the outer peripheral portion 14 of the old tire 11, the arm 18 is rotated, the upper mold 26 is positioned above the lower mold 27 and locked, and the upper cylinder is operated by the hydraulic cylinder 25.
26 is lowered, the outer peripheral portion 14 is compressed with the lower mold 27, and a predetermined hole
Drill 15

FIG. 2 shows the form of the cutting edges of the upper die 26 and the lower die 27, and the cutting edges 34, 35 are formed at the tips in this way.
The outer diameter (D) of the upper die 26 is larger than the outer diameter (d) of the lower die 27, and the cross-sections of the respective cutting edges 34, 35 are inwardly sloped 36,
It forms a right triangle with 37, and the lower die 27 has a hollow central axis. The outer peripheral portion 14 is compressed by the upper mold 26 and the lower mold 27 to form the hole 15, and the inner diameter of the hole 15 formed is the size (d) of the lower mold 27. The cutting edge 35 of the lower die 27 cuts into the outer peripheral portion 14, and in this case, the upper die 26 not only supports the outer peripheral portion 14, but the cutting edge 34 of the upper die 26 also cuts the outer peripheral portion 14.
Partially cut into it. The sloped surface 36 of the cutting blade 34 blocks the rubber portion that is pressed by the cutting blade 35 of the lower die 27 and tries to escape outward. Therefore, the portion to be cut is brought into a high hydrostatic state by the cutting edge slope 36 of the upper die 26 and the cutting edge 35 of the lower die 27, and the hole 15 is formed with a highly accurate shear surface. Often, not only one hole 15 but also a plurality of holes 15 are formed in the outer peripheral portion 14 of one old tire 11, and the connecting fittings 12 and 13 are inserted into these holes 15 to provide the holes shown in FIG. As each old tire
Old tire reefs are formed by connecting 11, 11 ...

The embodiment of the hole punching device described above is one specific example of the present invention, and is not limited to the embodiment.

(Effect) A hole can be formed in the outer peripheral portion of an old tire by using the hole forming device of the present invention, and the following effects can be obtained.

(1) In this device, the outer periphery of the old tire is compressed by the upper mold and the lower mold to form a hole, and the workability is high. That is,
Even large old tires can be hung on the lower mold by using the lift, and once hung, the hydraulic cylinder can be operated by operating a switch to make a hole. Also, the lift table can be used when the tire is removed from the lower mold after the holes are formed.

(2) Then, if the mold of the present invention is used, the above-mentioned hole is drilled with high precision. That is, by forming the inside of the cutting edge of the upper die with an inclined surface and making the size of the lower die smaller so that the inside of the cutting edge is an inclined surface, the cutting site that is punched by the compression of both die has a high static A hole can be drilled that exhibits a hydraulic pressure and is approximately the same size as the outer diameter of the lower mold without allowing material to escape outward.

[Brief description of drawings]

FIG. 1 shows an embodiment of a hole punching device according to the present invention, in which a is a front view, b is a side view, c is a plan view, and FIG. 2 is an upper / lower cutting blade portion. FIG. 3 shows a concrete example of an old tire fish reef constructed by connecting old tires, FIG. 4 shows a connection form of each old tire, and FIG. 5 shows holes formed in the outer peripheral portion of the old tire. . 11 …… Old tires, 12, 13 …… Couplings, 14 …… Outer peripheral part,
15 …… hole, 16 …… base, 17 …… post, 18 …… arm, 19 …… support stand, 20 …… attachment stand, 21 …… axis, 22 …… handle, 23 …… handle, 24 …… Stopper, 25 …… Hydraulic cylinder, 26 …… Upper mold, 27 …… Lower mold, 28 …… Receiver, 29…
… Lifting platform, 30… Lifting cylinder, 31… Piston rod, 32… Guide roller, 33… Support, 34, 35… Cutting edge, 36, 37… Slope.

Claims (3)

[Scope of utility model registration request] 1. A post is erected on a base, an arm is attached to the upper end of the post so as to be horizontally rotatable, a hydraulic cylinder is provided at the arm end, and an upper die is provided at the piston rod end. Fixing, fixing a supporting base at the middle position of the post, providing a lower mold on the upper end of the receiving stand standing on the supporting base, and further mounting an elevating base that moves up and down along the post on the post A device for boring a hole in the outer peripheral portion of an old tire. 2. An old tire outer peripheral portion according to claim 1, wherein the upper die is fixed to an arm end, and the lower die is provided at a piston rod end of a hydraulic cylinder attached to a support base. A device for drilling. 3. A mold attached to an apparatus for forming a hole in an outer peripheral portion of a tire by compressing the upper mold and the lower mold, wherein the outer diameter (D) of the upper mold is the outer diameter of the lower mold ( d), the cutting edge is projected on the outer periphery of the upper die, and its cross section is a right-angled triangle with an inward slope, while the lower die has a cylindrical shape with a large hollow inside, and its tip is Is a right-angled triangle having a cutting edge, and the cross section of the cutting edge is a right-angled triangle having an inclined surface on the inside.