KR100886760B1 - Screw strengthening coil manufacture device - Google Patents

Abstract

The present invention relates to a female screw reinforcing coil manufacturing apparatus for reinforcing a screw hole by fastening the screw hole first and then tightening the male screw before the male screw is formed of a softer material than the male screw. will be.

A feed groove 10 for pressurizing the raw material 2 by the upper and lower rollers 11 and 11 ', and a screw groove provided at the center of the main body 1 and having the same pitch on the outer surface as the female thread reinforcing coil 3 to be manufactured. (21) is formed, the locking groove 22 is formed so as to rotate the end of the material (2) in the center of the tip end surface, the locking groove 22 is a gentle inclined surface in one direction relative to the rotation direction ( 22 '), and the winding shaft 20, which forms the locking portion 22 " of the' ∧ 'type and the' ∨ 'type so that the material 2 can be caught and rotated in the opposite direction. The stopper 30 and the upper part of the winding shaft 20 are configured on the opposite side of the rotational shaft 20 on the opposite side to the entry of the raw material 20 to be in close contact with the winding shaft 20 and spaced apart from each other. The block 41 is lowered, characterized in that it is composed of a pressing portion 40 for pressing the female thread reinforcing coil (3), and a cutting blade (60) to move forward and backward close to the winding shaft (20).

Spring coil, internal thread reinforcement, reinforcing coil, spring, winding shaft

Description

Female tightening coil manufacture device

1 is an overall configuration front view of a manufacturing apparatus according to the present invention

Figure 2 is a detailed view of the main action state of the manufacturing apparatus according to the present invention

3 is a perspective view of a winding shaft and a female thread reinforcing coil according to the present invention.

4 is a side view of the winding shaft according to the present invention;

5 is a plan sectional view showing the winding shaft portion of FIG.
6 is an operation state diagram of the cutting groove processing unit according to the present invention

*** Description of the symbols for the main parts of the drawings ***

1: body 2: material

3: Female thread reinforcing coil 3 ': Cutting groove

4: bend

10: supply part 11, 11 ': roller

20: winding shaft 21: screw groove

22: engaging groove 22 ': slope

22 ": Hanging part 23: main part

30: stopper

40: pressure part 41: block

50: cutting groove processing part 51: support tube

52: rotary blade

60; Cutting blade

According to the present invention, when the base material on which the screw hole is formed is a softer material than the male screw (or bolt), the female screw reinforcing coil for reinforcing the screw hole by tightening the male screw first and then tightening the male screw prior to tightening the male screw. It relates to a manufacturing apparatus.

As is well known, when the base material in which the screw hole is formed to fasten the male screw is made of a material that is softer than the male screw such as light alloy, die caster, cast iron, plastic, wood, etc., it did not endure the strong torque of the male screw well. This problem causes the screw holes to wear out or loosen, thus causing many mechanical failures.

In order to solve this problem, in recent years, a screw hole is formed larger than the size of a male screw, and a female thread reinforcing coil having a rhombic cross-section and a threaded shape to be fastened to the screw hole first (a type of screw bush, also known as a screw coil). And then tighten the male screw again.

Such female thread reinforcing coils have been manufactured using a conventional coil spring manufacturing apparatus. Female thread reinforcing coils have a rhombic cross section of a material, and a bent portion that crosses the center of the end portion to be fastened to the screw hole should be formed. In consideration of the structural features such as the thing did not manufacture because there is a problem that the production cost is unnecessarily increased because the production efficiency is low.

The present invention has been made in view of the above-mentioned problems, the device to form a bent portion by hooking the material entering from one side, and at the same time, the device to form a groove for removing the bent portion while interlocking with the device and the complete winding It is intended to provide a device capable of manufacturing a female thread reinforcing coil very efficiently and efficiently consists of a device for cutting after the made.

The manufacturing apparatus of the present invention, the supply unit for pushing the material at appropriate timing intervals, the winding shaft to form a bent portion and at the same time the spring-shaped winding, the apparatus for forming a cutting groove in the bent portion and the pressing for separation after cutting and completion Bar and cutting blade is characterized in that, according to the accompanying drawings, a preferred embodiment of the present invention in detail as follows.

1 is an overall configuration front view of a manufacturing apparatus according to the present invention;

Figure 2 is a detailed view of the main action state of the manufacturing apparatus according to the present invention,

3 is a perspective view of a winding shaft and a female thread reinforcing coil according to the present invention;

4 is a side view of the winding shaft according to the present invention;

FIG. 5 is a plan sectional view showing the winding shaft portion of FIG. 1. FIG.

In the manufacturing apparatus of the present invention, first, the supply unit 10 for feeding the material 2 by the upper and lower rollers 11 and 11 'is configured on one side.

The front end of the winding shaft 20 is installed to protrude in the center of the main body 1, the outer surface of the winding shaft 20 was formed with a screw groove 21 having the same pitch as the female thread reinforcing coil (3) to be manufactured, A locking groove 22 is formed at the center of the tip end surface to rotate the end of the material 2, and the locking groove 22 forms a gentle inclined surface 22 'in one direction based on the rotation direction. And in the opposite direction to form the '22' and '∨' type locking portion 22 "so that the material (2) is rotated when rotating.

In addition, the middle portion of the engaging portion 22 "has a recess 23 to prevent the obstacle when forming the cutting groove (3 ').

The winding shaft 20 was configured to slowly move forward by the pitch interval of the outer surface while performing the forward rotation, and to reverse in the reverse rotation.

And on the opposite side of the winding shaft 20 to enter the material (2) on the opposite side while repeating the forward and backward while the close contact with the winding shaft (20) constituted a stopper (30) to operate the spaced apart, When the stop enters the stopper 30 advances and maintains the state in close contact with the winding shaft 20 serves to limit the excessive entry of the material (2) to stop, and when such a function is completed, the reverse to the next entry I'm waiting.

The upper portion of the winding shaft 20 is configured with a pressing portion 40, the winding is made as necessary, then the block 41 is lowered to cut the end portion of the winding while pressing the wound female thread reinforcing coil (3) Also, after cutting is completed, if the block 41 reversely rotates the winding shaft 20 in a state in which the block 41 does not rotate by pressing the female thread reinforcing coil 3, the winding shaft 20 moves backward while the female thread reinforcing coil 3 Separate from).

And one side of the main body 1 is formed with a cutting groove processing unit 50, by forming a rotary blade 52 at the end of the rotating support pipe 51, as shown in Figure 6 the support pipe 51 is the winding shaft ( When rotating in the direction of the center of 20, the rotary blade 52 is to form a cutting groove (3 ') in the female thread reinforcing coil (3).

In addition, to form a cutting blade 60 to move forward and backward close to the winding shaft (20) of the female thread reinforcing coil (3) of the winding is completed by the cutting blade 60 is advanced in the state that the winding shaft (20) completed the winding. To cut the tip.

In the drawings, reference numeral 5 denotes a discharge guide, 6 a cylinder, and 7 a cam device.

Looking at the operation of the present invention having such a configuration in detail as follows.

First, the material is supplied by the rollers 11 and 11 ′ of the supply unit 10. When the material reaches the stopper 30 while entering the locking groove 22 of the winding shaft 20, the supply is stopped and the winding shaft ( 20 rotates one turn to form the bent portion 4, and when the material 2 is rotated in the state of being inserted into the locking groove 22 of the winding shaft 20, the locking portion 22 "of the locking groove 22 is rotated. The material () is caught and rotated so that the bent portion 4 is formed.

After the winding shaft 20 rotates one turn, the stopper 30 retracts and returns to its original position, the supply unit 10 releases the material 2 in a free state, and the winding shaft 20 then rotates 2-3. After turning the wheel further, it stops once.

At this time, the cutting groove processing unit 50 acts, as shown in Figure 6, when the support tube 51 is rotated at a predetermined angle in the direction of the winding axis 20, the rotary blade 52 is the bent portion of the female screw reinforcing coil ( 4) is formed to form a cutting groove (3 ') at the beginning of the winding in a circular shape a little later, the winding shaft 20 is rotated as necessary to complete the winding of the female screw reinforcing coil (3). .

After completion, the cutting unit 60 is advanced by pressing the outer surface of the female thread reinforcing coil (3) wound down by the pressing unit 40 is completed by cutting the unwinding portion of the material (2).

After the cutting is completed, the winding shaft 20 is reversely rotated and separated from the completed female thread reinforcing coil 3 while the pressing part 40 is pressed, and the separated female thread reinforcing coil 3 falls down and is collected. do.

According to the present invention as described above, it is possible to produce the female screw reinforcement coil efficiently because the automation is performed as a whole, in particular, to be able to form the bent portion of the female screw reinforcement coil, production of the female screw reinforcement coil It is a useful invention that can significantly improve efficiency and provide female thread reinforcing coils with uniform quality and low price.

Claims (1)

A supply section 10 for feeding the raw material 2 by the upper and lower rollers 11 and 11 '; It is installed at the center of the main body 1 and forms a screw groove 21 having the same pitch as the female thread reinforcing coil 3 to be manufactured on the outer surface, and is hooked to rotate by walking the end of the material 2 in the center of the distal end surface. The groove 22 is formed, but the locking groove 22 forms a gentle inclined surface 22 'in one direction based on the rotation direction, and in the opposite direction, the material 2 can be caught and rotated in the opposite direction. A winding shaft 20 having a locking portion 22 " A stopper 30 configured to be opposite to the side on which the material 2 enters around the winding shaft 20 to be in close contact with the winding shaft 20 and spaced apart from each other; Compression portion 40 is configured on the winding shaft 20, the block 41 is lowered to press the female screw reinforcing coil (3); A cutting blade 60 moving forward and backward close to the winding shaft 20; Female thread reinforcing coil manufacturing apparatus, characterized in that consisting of.

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