JP2007290107A - Extracting device for positioning pin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extracting device for a positioning pin with a simple structure capable of being easily screwed in a positioning pin, simply exchanging a male screw separator to be screwed, and improving working efficiency. <P>SOLUTION: This extracting device for a positioning pin comprises a male screw separator 10 having a connection part 13 provided with a lock groove at a top, and a male screw 11 at a bottom. A stepped cylindrical hammer 33 with bottom outside diameter smaller than top outside diameter is extrapolated in a long shaft 32, and engagement means 27 is provided at the bottom of the long shaft 32. The male screw separator 10 can be attached and detached to and from the engagement means 27 by one-touch operation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In order to align the positions of two parts, the present invention opens a positioning pin hole in each of the parts, drives the positioning pin, and then pulls out the driven positioning pin (knock pin). It is about.

In jigs and molds, etc., in order to accurately align the two parts, and to prevent the bolts tightened to each part from being displaced due to loosening during use, the parts are Open the positioning pin holes and drive the positioning pins.
On the contrary, the jigs and molds may be repaired or repaired.
At this time, it is necessary to pull out the positioning pin driven into the component.

  Conventionally, as shown in FIG. 4, the manual pulling device for the positioning pin has a long shaft 32 having a male screw 14 at the front end and a stopper 34 at the rear end, and a stepped through the shaft 32. A cylindrical hammer 33 is extrapolated.

  When pulling out the positioning pin using the pulling device, fully engage the male screw on the tip with the female screw on the positioning pin, then move the hammer upward and bring it into contact with the stopper. Pull out the positioning pin.

By the way, when screwing into the female screw of the positioning pin using the pulling device, one hand grasps the hammer of the pulling device with both hands depending on the weight of the pulling device, and the other hand rotates the shaft body. Therefore, it takes a lot of effort and is difficult to screw.
Further, since the size of the female screw formed differs depending on the outer diameter of the positioning pin, it is necessary to change the male screw separator at the tip of the pulling device. Since the shaft is detachable by screw type, changing the setup is troublesome.
In addition, since the detachable part by the screw type is easily loosened by the impact of the hammer, the work efficiency is very poor.

  Although it is simple in structure, it can be easily screwed when screwed into the positioning pin, and the male screw separator can be easily replaced by a screw type at the end of the long shaft. It is an object of the present invention to provide a positioning pin pulling device that eliminates the looseness of the detachable portion caused by the above and improves the efficiency of workability.

It has a connecting part with a locking groove in the upper part, the middle has a nut-like handle with a plurality of flat surfaces on the outer surface, the lower part has a male thread separator with a male thread, and the upper part of the long shaft A first stopper larger than the shaft, a second stopper provided in the middle of the long shaft, and a stepped cylindrical shape having a lower outer diameter smaller than the upper outer diameter between the first stopper and the second stopper. A hammer is extrapolated, and an engaging means is provided at the lower part of the long shaft, and the engaging means has a stepped shape with a lower outer diameter smaller than the upper outer diameter, and is formed from the lower end surface of the engaging means. Drill a hole, open a plurality of holes in the middle of the hole in a direction perpendicular to the axis, insert an urging member in the lower outer week of the engaging means, and insert the biasing member into the holes from the diameter of the hole. Extrapolating a slightly larger engagement sphere, and having a hollow portion penetrating from one end to the other end at the bottom of the engagement means, The end and the other end are slidably fitted to a sleeve with both ends having a larger inner diameter than the hollow portion and fixed with a retaining ring, the engaging sphere is pressed against the inner diameter of the sleeve with both ends, An engaging shaft main body biased in a protruding direction by a member, and the male screw separating body and the engaging shaft main body are detachable by one touch. did.

  According to the above-described present invention, the engagement shaft main body and the male screw separator can be detachably attached by one touch, so that the male pin can be screwed to the positioning pin only by using the male screw separator. Therefore, the operation can be performed more easily.

  In addition, the male thread separator that engages with the female thread of the positioning pin for one engaging shaft body has different female thread sizes depending on the diameter of the positioning pin. However, it can be easily replaced by making it detachable with a single touch.

  Furthermore, since the male screw separator is frequently replaced with the engagement shaft body, there is a problem that the removable part by the previous screw type is likely to loosen due to the impact of the hammer, but the male screw separator becomes removable by one touch. Therefore, there is no removable part by screw type.

  Although it has a simple and simple structure, an engaging part is provided on the engaging shaft main body and a connecting part is provided on the male screw separator, so that it can be attached and detached by one touch.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The positioning pin pulling device 30 according to the present invention includes a male screw separating body 10 that is screwed into a female screw of the positioning pin, an engagement shaft body 20 that engages the male screw separating body 10 and pulls out the positioning pin 40, and It is comprised from the hammer 33 which generates the force which extrapolates to the engaging shaft main body 20, and pulls out.

  The male screw separator 10 is formed with a male screw 11 for screwing into a female screw formed on the positioning pin at the tip (lower end in FIG. 1), and the middle is flat on the outer surface for manual screwing. And a connecting portion 13 having a locking groove at the rear end.

  Further, the male thread separating body 10 can also have a structure in which the handle portion 12 and the male thread portion 18 are divided by a coupling body 17 as shown in FIG. 3, and the tip of the male thread portion loses skill due to wear. Sometimes, it can be replaced using a bolt that is a standard product.

The engaging shaft main body 20 is provided with a stopper 34 larger than the shaft at the upper portion (the upper end in FIG. 1) of the long shaft 32, and generates a force for abutting the hammer 33 and pulling out the positioning pin.
A second stopper 31 is provided in the middle of the long shaft 32 so that the hammer 33 does not come off from the long shaft 32.
Further, the engaging means (middle of FIG. 1) 27 provided at the lower part of the long shaft 32 is provided with a stepped shape in which the outer diameter of the lower end is smaller than the outer diameter of the upper end, and the sleeve 25 with both ends is always projected on the outer surface. A biasing member 25 for biasing in the direction is inserted.
When the slot 22 is drilled from the lower end surface of the engaging means 27 and the connecting portion 13 of the male screw separator 10 is engaged, a storage space is provided.
Further, a plurality of holes 21 are formed in the middle portion of the hole 22 in a direction perpendicular to the axis, an engagement sphere 24 slightly larger than the diameter of the hole is extrapolated, and the engaged male screw separator 10 is connected. Press so that part 13 does not come off.
Furthermore, the outer end of the engagement portion 27 has a hollow portion penetrating from one end to the other end, and one end and the other end are movably fitted with a sleeve 23 with both ends having a larger inner diameter than the hollow portion. It stops with the stop ring 22 (FIG. 2), and the engagement sphere 24 that has been extrapolated is pressed.

A locking groove 21 for locking the retaining ring 22 is formed on the outer periphery of the front end of the engaging portion 27 (FIG. 2).

Next, an operation method for pulling out the positioning pin 40 using the above-described positioning pin pulling device 30 will be described.
As shown in FIG. 1, the positioning pin 40 is driven into a series of perforated positioning holes 55 in a portion where the two parts 51 and 52 are overlapped, thereby restricting the positions of both the parts 51 and 52.
In order to pull out the positioning pin 40, first, the male screw separator 10 is sufficiently screwed into the female screw 41 formed on the positioning pin 40.

And using both hands, one hand grasps the upper part (the upper end of FIG. 1) of the engagement shaft main body 20, and the other hand pulls up the sleeve 23 with both ends.
With the sleeve 23 with both ends pulled up, the engaging means 27 is engaged with the connecting portion of the male screw separator 10, and the sleeve 23 with both ends is released from the hand.

The sleeve 23 with both ends separated from the hand is urged in the protruding direction by the urging member 25 as shown in FIG.
The inner diameter of the intermediate portion of the biased sleeve 23 with both ends presses the engaging sphere 24, and the engaging sphere 24 is caught in the engaging groove of the connecting portion 13 of the male screw separator 10, so that the male screw separator 10. And the engaging shaft main body 20 are engaged with each other and become a united state.
If the hammer 33 is moved upward in this state and repeatedly brought into contact with the stopper 34, an impact force is generated by the impact of the hammer.
The positioning pin 40 is pulled out using this impact force.

Since the positioning pins 40 driven in are different in the size of the female screw formed depending on the size of the pin diameter, the male screw 11 of the male screw separating body 10 is also prepared according to the female screw of the positioning pin 40 and necessary. The changeover can be made easily.
(See Figure 5)

  The present invention can also be applied to an air tool because the engagement shaft main body and the male screw separator are detachably engaged by one touch.

Since the present invention has a simple structure, it is easy to manufacture and can be provided at low cost.
Further, since the engaging means 27 is provided on the engaging shaft main body 20 and the connecting portion 13 is provided on the male screw separating body 10 so as to be detachable, the workability is improved when screwing. Since the separation body 10 can be easily replaced, it can be used conveniently during use.

It is sectional drawing which showed the mode before the operation | work of an engaging-shaft main body and a male screw isolation | separation body. It is detail drawing which showed the state which engaged the external thread isolation body with the engagement shaft main body. It is the figure which showed the state which divided | segmented the external thread and the external thread which engages with a positioning pin using the coupling body. It is an external view of the conventional manual locating pin pulling device. It is the figure showing according to the size of the external thread separation body engaged with the engaging shaft book and the engaging part of the shaft main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Male thread separation body 11 Male thread 12 Handle 13 Connection part 20 Engagement shaft main body 21 Locking groove 22 Stop ring 23 Sleeve with both ends 24 Locking sphere 25 Energizing member 27 Engaging means 30 Pulling out for positioning pin according to the present invention Device 31 Second stopper 32 Long shaft 33 Hammer 34 First stopper 40 Positioning pin 41 Female screw 51, 52 of positioning pin Parts positioned by positioning pin

Claims (2)

The male screw separator and the engagement shaft main body are arranged so that the male screw separator and the engagement shaft main body are aligned with each other, and the male screw separator is a one-touch of the engagement means of the engagement shaft main body. The detaching device for a positioning pin which is detachable according to claim 1, wherein the male screw separating body is formed by forming a male screw at one end, a handle at the middle, and a connecting portion at the other end. The positioning shaft pulling device comprises a long shaft provided with a stopper at the rear end, a hammer externally attached to the shaft, and an engaging means provided at the tip of the shaft. It has a connecting part with a locking groove in the upper part, the middle has a nut-like handle with a plurality of flat surfaces on the outer surface, the lower part has a male thread separator with a male thread, and the upper part of the long shaft A first stopper larger than the shaft is provided, a second stopper is provided in the middle of the long shaft, and a stepped cylindrical shape having a lower outer diameter smaller than the upper outer diameter between the first stopper and the second stopper. A hammer is extrapolated, and an engaging means is provided at the lower part of the long shaft, and the engaging means has a stepped shape with a lower outer diameter smaller than the upper outer diameter, and is formed from the lower end surface of the engaging means. Drill a hole, open a plurality of holes in the middle of the hole in a direction perpendicular to the axis, insert an urging member in the lower outer week of the engaging means, and insert the biasing member into the holes from the diameter of the hole. Extrapolating a slightly larger engagement sphere, and having a hollow portion penetrating from one end to the other end at the bottom of the engagement means, The end and the other end are slidably fitted to a sleeve with both ends having a larger inner diameter than the hollow portion and fixed with a retaining ring, the engaging sphere is pressed against the inner diameter of the sleeve with both ends, And an engaging shaft main body biased in a protruding direction by a member, wherein the male screw separating body and the engaging shaft main body are detachable by one touch.

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