KR20180003115A - Connecting clamp manufacturing apparatus for plastic pipe - Google Patents

Abstract

The purpose of the present invention is to provide an apparatus to manufacture a clamp clip connecting a plastic pipe joint, capable of enhancing productivity from a continuous manufacturing process. According to the present invention, the apparatus comprises: a lower die and an upper punch vertically installed to face each other. The lower die and the upper punch include a fastening hole and a riveting hole, respectively, wherein a piercing part cutting both ends of a clamp clip in accordance with the length to perform notching, and a bending and cutting unit where a material processed in the piercing unit is positioned to downwardly bend both end parts by 90 degrees and cut the both end parts into each piece at the same time. The piercing unit and the bending and cutting unit are disposed in one mold.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a clamping apparatus for a plastic pipe joint,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus and a method for manufacturing a clamping clip for connecting a plastic pipe joint, and more particularly, to a method of manufacturing a clamping clip for connecting a plastic pipe joint by using a synthetic resin plate To an apparatus and a method for manufacturing a metal clamping clip for connection to a plastic pipe joint used for clamping both ends of a joint of a synthetic resin plate.

Generally, when a pipe of a sewer pipe or the like is connected, a separate clamp is used to prevent leakage of the joint of the pipe. Among them, a fixing fixture of Omega (Ω) is wrapped around the outer circumference of the pipe joint, A method of tightly tightening the both ends of the open ends by bolts and nuts to tightly tighten the outer circumferential surface of the pipe to prevent the leakage of the joints is mainly used.

For example, a conventional sewage pipe joining device of the registered utility model No. 0458178 can be used. In such a conventional sewer pipe joining device, a through-hole through which a bolt passes is formed integrally at both ends of an omega-shaped fastener. Since the method of manufacturing the clamps in one piece is difficult to manufacture and is subject to the constraints of the equipment that can be produced, there is considerable difficulty in manufacturing clamps for connecting large diameter pipes.

Accordingly, the omega-shaped fixture is formed of a synthetic resin material such as plastic, a metal clamp is riveted to both ends of the fixture, and the clamps of both sides are fastened to each other by using bolts and nuts, Clamps that can wrap the joints of the tube have been developed and used.

The clamp having the above-described structure is formed by a process for forming a plurality of bolt fastening holes, a process for machining a riveting hole, and a bending process of a complicated shape to be fastened and fixed to each other by using the respective devices In this case, it takes a lot of time to manufacture the clamp, and at the same time, the manufacturing cost of the clamp increases greatly.

In addition, the conventional manufacturing process has a problem that the continuous manufacturing process is not smoothly performed, resulting in a high defect rate in the manufacturing process and low productivity.

Korea Registered Utility Model No. 0458178 (Registered on January 13, 2012) Korean Registered Patent No. 1356133 (Registered on January 21, 2014)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a clamp clip used for connecting plastic pipes, which can be easily and accurately formed, And more particularly, to a clamping apparatus and a method of manufacturing a clamping clip for connecting pipe joints.

According to an aspect of the present invention, there is provided a punch comprising a lower die and an upper punch which are vertically opposed to each other, wherein the lower die and the upper punch are formed with the fastening holes and the riveting holes, A piercing portion which is notched to be received; Wherein the pierced portion of the lower die is disposed at a position spaced apart by a predetermined distance from the piercing portion, and the piercing portion of the lower die faces the piercing portion, A notching hole formed in a shape of "? &Quot; and"? &Quot;; A first piercing hole located at a side of the notching hole and formed at a plurality of spaced apart portions along a side of the material; And a plurality of second piercing holes spaced apart from each other by a predetermined width along the other end of the blank are formed. The piercing portion of the upper punch protrudes in a "?" A notching projection formed; A plurality of first punching pins protruding at positions corresponding to the first piercing holes; And a plurality of second punching pins protruding from a position corresponding to the second piercing hole, wherein the lower die is provided with a plurality of pairs of left and right conveying guides spaced apart from each other by a predetermined distance, And the feed guide is continuously fed through the lower die while both ends of the material are guided by the plurality of feed guides. The feed guide is configured to be rotatable so that continuous supply of the material is facilitated.

According to the present invention, a process of piercing, notching, bending, cutting, and the like is continuously performed in a process of feeding a plate-like metal material having a length to a space between a lower die and an upper punch, When the process is completed, the material is moved to the next process, and the time for rearranging the materials in each mold is shortened. At the same time, there is no position alignment error inevitably occurring in the process of rearranging the materials, There is a reduction effect.

In addition, there is another effect in preventing the occurrence of a latching phenomenon occurring when a material is supplied and improving productivity from a continuous manufacturing process.

1 is a perspective view showing an example of a clamp manufactured by the apparatus for manufacturing a clamping clip for connecting a plastic pipe joint of the present invention.
2 is a cross-sectional view showing an example of a clamping clip manufacturing apparatus for connecting a plastic pipe joint according to the present invention.
3 is a perspective view showing an example of a lower die of the present invention.
4 is a perspective view showing an example of the upper punch of the present invention.
5 is a process flow chart showing an example of a method for manufacturing a clamp for connecting a structure-improved plastic pipe joint of the present invention.
FIG. 6 is a perspective view showing an example of processing a material according to a method for manufacturing a clamp for connecting a structure-improved plastic pipe joint of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to an apparatus and a method for manufacturing a clamping clip for connecting a plastic pipe joint, which is used to connect and fix a joint of a large-diameter plastic pipe by fixing the plate-shaped plastic material by rounding the both ends of the plastic material in contact with each other.

1, a plurality of fastening holes 11 are formed in the upper portion of the clamp clip 10 manufactured by the manufacturing apparatus and the manufacturing method of the present invention, (The first and second bending portions B1 and B2). In this process, a plurality of riveting holes 12 are formed in a part bent relatively downward in length. And the free end thereof is bent at a certain angle (the third bending portion B3) to the portion where the riveting hole 12 is formed.

2, the lower die 100 and the upper punch 200 are formed of a lower die 100 and an upper punch 200, which are vertically disposed facing each other, as shown in FIG. 2, A pair of piercing parts 110 and 210 which are notched at both ends by fitting the clamping clip 10 with the clamping hole 11 and the riveting hole 12, The lower die 100 and the upper punch 200 are formed by bending and cutting portions 120 and 220 where the processed work 1 is positioned and both ends are bent downward at 90 ° and simultaneously cut into pieces. Will be described in more detail.

3, the lower die 100 includes a notch hole 111 formed in a shape of a "? "And a"? &Quot; shape spaced apart from each other by a predetermined distance, And includes a first piercing hole 112 formed at a predetermined distance along a first end of the blank 1 and a second piercing hole 112 formed at a second end of the blank 1, A first insertion groove 121 formed at a portion where the riveting hole 12 is formed with respect to the fastening hole 11 and formed in a rectangular shape along the length, A second insertion groove 122 formed on the opposite side of the first insertion groove 121 with respect to the hole 11 and formed in a rectangular shape along the length and a second insertion groove 122 formed by cutting the notch- And a bending and cutting portion 120 in which a third insertion groove 123 is formed.

At this time, the lower die 100 is provided with a plurality of conveying guides G which are vertically moved up and down by elastic springs (not shown) The both ends of the work 1 are guided by the conveying guide G so that the alignment of the work 1 in the course of the conveying or processing can be performed. So that the position is not released.

In addition, the conveying guide G is rotatable so as to prevent a hanging phenomenon when a material is fed. This makes it possible to smoothly perform a continuous manufacturing process, thereby reducing a defective rate and enabling mass production.

The conveying guide G as described above is pressed and lowered by the upper punch 200 to be formed while the work 1 is closely attached to the lower die 100. When the upper punch 200 is lifted, And is positioned at a certain height from the lower die 100, whereby it is easier to feed the work 1 a certain distance according to each step.

A pair of support pins 114 may be further provided between the first piercing hole 112 and the second piercing hole 113 to be protruded and held by elastic springs at a predetermined interval. So that the work 1 is not bent or deformed in the course of forming the fastening hole 11 and the riveting hole 12. [

4, the upper punch 200 includes an upper plate 200A having a plurality of punch pins protruded downward from a bottom surface thereof, and a plurality of punch pins positioned below the upper plate 200A, And a lower plate 200B in which a plurality of through holes (not shown) are formed so as to protrude downward and a plurality of springs S are provided between the upper plate 200A and the lower plate 200B, When the upper punch 200 is lowered and the lower plate 200B is brought into contact with the upper surface of the lower die 100, the plurality of springs S are compressed so that the upper plate 200A is pressed against the upper plate 200A and the lower plate 200B The plurality of punch pins protruded downward from the bottom surface of the upper plate 200A are seated on the upper surface of the lower die 100 through the through holes of the lower plate 200B small (1) it is piercing, notching, bending and cutting.

The upper punch 200 configured as described above includes a notching protrusion 211 protruding in a "? "And a"? "Shape at a position corresponding to the notch hole 111 of the lower die 100, A plurality of first punching pins 212 protruding at positions corresponding to one piercing hole 112 and a plurality of second punching pins 213 protruding at positions corresponding to the second piercing hole 113 The first and second bending blocks 221 and 222 and the third insertion groove 123 are formed to be inserted into the first and second insertion grooves 121 and 122 so as to be inserted into the first and second insertion grooves 123 and 123, And a bending and cutting unit 220 composed of a plate-shaped cutting plate 223.

In the present invention, the bending and cutting portion 120 of the lower die 100 is formed with a plurality of concave grooves 125 along a length thereof bent at the side of the fastening hole 11, The bending and cutting portion 220 of the upper die 100 and the lower die 100 may be formed with a plurality of pressing protrusions 224 protruded from the lower die 100 and the upper punch The bending of the clamping clip 10 is prevented from being easily deformed by forming a plurality of reinforcing pieces 13 at one bending portion while bending and cutting the material 1 positioned at the bending and cutting portions 120, .

Hereinafter, a method of manufacturing the clamp clip 10 using the clamping apparatus for connecting a plastic pipe joint according to the present invention will be described.

First, the present invention is characterized in that the plate-like material 1 is inserted into the conveying guide G of the lower die 100 as shown in FIGS. 5 and 6, and then the pierced portion of the upper and lower dies 100 and 200 110, and 210 (S10).

Thereafter, the upper punch 200 is lowered to form a plurality of fastening holes 11 and a riveting hole 12 in the work 1, and at the same time, the work 1 is aligned with the required length of the clamping clip 10, ┣ "Notched" and "Notched" are notched (S20).

After the upper punch 200 is lifted up, the work 1 is lifted up by the bending and bending of the upper and lower dies 100 and 200, The upper punch 200 is lowered to lower the both end portions to 90 degrees with respect to the plurality of fastening holes 11 formed in the blank 1, The notched portions in the portions 110 and 210 are cut with the cutting plate 223 (S30), so that a single clamp clip 10 is manufactured.

Since the process of piercing, notching, bending, cutting, and the like is performed stepwise in the course of feeding a plate material of a metal material having a length as described above between one lower die and an upper punch, The time required is greatly shortened.

1: Material 10: Clamp clip
11: fastening hole 12: riveting hole
13: reinforcement solder 100: lower die
110: Piercing part 111: Notching hole
112: first piercing hole 113: second piercing hole
114: support pin 120: bend and cut
121: first insertion groove 121A:
122: second insertion groove 123: third insertion groove
124: support block 125:
200: upper punch 200A: upper plate
200B: lower plate 210: piercing part
211: notching projection 212: first punching pin
213: second punching pin 220: bending and cutting section
221: first bending block 222: second bending block
223: cutting plate 224: pressing projection
B1: first bending portion B2: second bending portion
B3: Third bending part G: Feed guide
S: Spring

Claims (1)

A clamp clip manufacturing apparatus for manufacturing a clamp clip (10) by forming a plurality of fastening holes (11) and a riveting hole (12) in a continuously supplied plate material (1)
The lower die 100 and the upper punch 200 are formed of the lower die 100 and the upper punch 200 which are vertically opposed to each other and the lower die 100 and the upper punch 200 are formed with the fastening holes 11 and the riveting holes 12 A piercing portion 110, 210 which is notched at both ends by fitting the clamp clip 10 to the length;
Wherein the bending and cutting portions 120 and 220 are disposed in a single mold in such a manner that the material 1 processed by the piercing portions 110 and 210 is positioned such that both end portions are bent downward by 90 ° and simultaneously cut into pieces, The piercing portion 110 of the die 100 includes a notching hole 111 formed in a shape of " ┣ "and" ┫ "
A first piercing hole 112 located at a side of the notch hole 111 and formed at a predetermined distance apart from the first end of the blank 1; And a plurality of second piercing holes 113 are formed at predetermined intervals along the other end of the work 1. The piercing portion 210 of the upper punch 200 is connected to the notch hole 111 A notching protrusion 211 protruding and formed in a " ┣ "shape and a" ┫ "shape at a corresponding position;
A plurality of first punching pins 212 protruding from a position corresponding to the first piercing hole 112; And a plurality of second punching pins (213) projecting at positions corresponding to the second piercing holes (113)
The lower die 100 is provided with a plurality of conveying guides G which are vertically moved up and down by elastic springs in a plurality of rows spaced apart from each other by a predetermined distance, And is continuously supplied to pass through the lower die 100 while both ends are guided,
Wherein the feed guide (G) is configured to be rotatable so that continuous feeding of the material is facilitated.

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