KR101048504B1 - Plunger Type Positioning Pin Assembly - Google Patents

Abstract

When assembling a part, the positioning pins used in the jig for holding the part are disclosed. A cylindrical housing, a plunger movably installed in the housing in a vertical direction, a compression coil spring installed inside the housing and applying elastic force to the plunger, and a lower end portion of the housing, the strength of the tensile stress of the spring It includes a spring elastic adjustment screw for adjusting the, the plunger has a plurality of taper arms extending in parallel with each other, the base for supporting the taper arm, the taper arm is tapered portion extending from the base portion, An upper end portion inclined inward at a predetermined angle from the tapered portion, wherein the taper arm is characterized in that the diameter is increased toward the upper end portion from the base so that the component is not separated when the component is inserted and moved or rotated. .

Pins, springs, jigs

Description

Positioning pin assembly of plunger type {POSITIONING PIN ASSEMBLY OF PLUNGER TYPE}

The present invention relates to a positioning pin for fixing and positioning a part to be assembled in place, and more specifically, to prevent the part from deviating from the jig when the jig holding the part to be assembled is moved or rotated. A positioning pin assembly for

In general, when the parts to be assembled to the vehicle is assembled to the assembly jig assembly fastening or additional work, the jig pin is inserted into the hole formed in the part to fix and assemble the parts.

1 is a perspective view showing a conventional jig pin.

As shown in Figure 1, the conventional jig pin has a cylindrical shape, is installed in the vertical direction to the jig.

These jig pins are configured to hold and move the parts horizontally when assembling the parts or performing additional work. Therefore, when the jig holding the part is moved or rotated, the part is not held by the jig pin stably and is released from the jig. Therefore, by using a clamp or the like that can fix the parts to be assembled, there is a problem in that the clamping process is added during the operation, the productivity is lowered.

In addition, the use of industrial robots is becoming common, and most manufacturing sites use industrial robots to work.

However, in the case of working using a jig provided with a conventional pin, the parts to be assembled are assembled by moving or rotating in various directions other than the horizontal direction in order to move between processes or to attach to a predetermined position. In this case, a device that can be fixed to the industrial robot or jig to prevent the parts from being separated should be provided.

Therefore, the cost of adding a separate equipment to the industrial robot or jig, or because the robot must move in a horizontal state so that the component does not leave when moving the jig or parts, the operating radius of the robot becomes large. Therefore, when partitioning the production line, the production line should be provided in consideration of the radius of action of the robot, there is a problem that the efficiency is reduced in terms of space utilization.

Accordingly, the present invention is to solve the above-described problems, when the component is moved or rotated in a direction other than the horizontal direction by installing a plunger type positioning pin on the assembly jig for assembling, combining or additional work The purpose is to provide a plunger-type positioning pin that can prevent space from falling off and minimize the radius of action of the robot so that space can be used efficiently.

According to one embodiment of the present invention for achieving the above and other objects of the present invention, in the positioning pin used in the jig for holding the part when assembling the part, a cylindrical housing and the inside of the housing up and down A plunger movably installed in a direction, a compression coil spring installed inside the housing and applying an elastic force to the plunger, and a spring elastic adjusting screw engaged with the lower end of the housing to adjust the strength of the tensile stress of the spring; The plunger includes a plurality of taper arms extending side by side and a base supporting the taper arms, wherein the taper arms are tapered portions extending from the base portion and inclined inward at a predetermined angle from the tapered portion. Having an upper end, wherein the tapered arm is a component when the component is inserted and At the base to prevent departure will be provided a positioning pin assembly, it characterized in that the diameter increases toward the upper end.

It is preferable to provide a set screw screw for preventing the loosening of the spring tension adjusting screw.

It is preferable that the taper arm of the said plunger is six.

It is preferable to provide a spring sheet for supporting the compression coil spring on the bottom of the base of the plunger.

According to the present invention having the above-described configuration, it is possible to elastically retreat and has a split taper pin having a predetermined inclination angle, so that the component is fixed so as not to be released during the movement or rotation of the component, minimizing the radius of action of the robot Since the space can be used efficiently and there is no need for a separate clamping device, the installation cost is reduced and the work process is reduced, thereby improving productivity.

In addition, since the adjustment screw is installed on the bottom of the body, it is possible to adjust the elastic force of the pin according to the weight of the parts to be assembled, there is an effect that can be used regardless of the weight of the parts.

Hereinafter, a spring plunger pin according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

2 is an exploded perspective view of a plunger type positioning pin assembly according to a preferred embodiment of the present invention, and FIG. 3 is a cross-sectional view of the plunger type positioning pin assembly shown in FIG.

2 and 3, the plunger pin according to an embodiment of the present invention is a cylindrical housing 10, the component holding plunger 20 retractably positioned inside the housing 10, and Compression coil spring 30 which is located on the lower surface of the plunger 20 to apply an elastic force to the plunger, elastic adjustment screw 40 for adjusting the elastic strength of the spring 30, and loosening of the elastic adjustment screw Set screw screws 50 to prevent them.

The cylindrical housing 10 is a cylindrical case for accommodating the plunger 20 and the spring 30 therein, and serves as a guide when the plunger 20 moves up and down in the housing 10. An elastic adjustment screw 40 for adjusting the elastic strength of the spring 30 is installed below the housing 10. The lower inner circumferential surface of the housing 10 has a screw portion formed to be fastened to the elastic adjustment screw 40, and the setting hole 12 fixing the position of the elastic adjustment screw 40 on the lower outer circumferential surface of the housing 10 facing the screw portion. ).

The plunger 20 includes a plurality of taper arms 28 extending side by side, a base 24 supporting the taper arms 28, and a spring sheet 26 integrally formed on the bottom surface of the base 24. Equipped. The taper arm 28 has a tapered portion 28a extending from the base 24 and an upper portion 28b inclined inward at a predetermined angle from the tapered portion 28a. The upper end 28b is configured to have a predetermined inclination angle, that is, a predetermined taper angle in the direction of the center of the hole so that when the taper arm 28 is inserted into the hole formed in the part, the part is smoothly inserted into the taper arm 28. It is. The taper arm 28 is configured to increase in diameter from the base 24 toward the upper end 28a, and the taper arm 28 is tapered arm when the part is inserted into the taper arm 28 and moved or rotated. It is formed to have a diameter slightly larger than the diameter of the part hole so as not to be separated at 28.

The base 24 not only prevents the plunger 20 from escaping from the housing 10 when the plunger 20 moves in the housing 10 but also supports a plurality of taper arms 28. To perform.

The spring seat 26 of the base 24 accommodates one end 32 of the spring 30 to fix the position of the spring 30.

One end 32 of the spring 30 is seated on the sifting seat 26 formed at the bottom of the plunger 20, and the other end 34 is attached to the protrusion 42 formed on the upper side of the elastic adjustment screw 40. It is seated.

The elastic adjustment screw 40 adjusts the elastic force applied to the component according to the weight of the component, the bottom of the adjustment screw 40 is formed with an unevenness to adjust the elastic force using a tool such as a screwdriver, a hexagon wrench, The protrusion 42 formed on the upper surface of the adjusting screw 40 is inserted into the other end 34 of the spring 30 to fix the position of the spring 30. The outer circumferential surface of the adjustment screw 40 is formed with a screw portion 14 to be rotatable along the inner circumferential surface of the housing 10.

The set screw screw 50 is coupled to a setting hole 12 formed in the lower outer surface of the housing 10, and has a circular head portion 52 and a screw portion projecting downward from the head portion 52. It has a body 54 formed.

According to the above configuration, even when the robot rotates the jig up, down, left and right, while holding the part to be assembled with the positioning pin according to the present invention mounted on a jig (not shown), the part is stably held on the positioning pin. It is.

That is, when the taper arm 28 of the jig is inserted into the hole of the part, a plurality of taper arms 28 forming a cylindrical shape are inserted into the hole of the part while the diameter is reduced. When the part moves a certain distance along the taper arm 28, the taper arm 28 returns to its original position by its elastic force.

In this state, even if the component faces downward, the component is caught by the tapered portion 28a of the tapered arm 28 and does not come out of the positioning pin.

With the part held by the positioning pin, as shown in Fig. 4, the jig is moved to a predetermined position and the jig is pressed to compress the positioning pin. When the positioning pin is compressed, the plunger pin is withdrawn into the housing 10, whereby the diameter of the taper arm 22 is also reduced by the opening 14 formed in the upper end of the housing 10. At the same time, the upper end of the housing 10 is in contact with the component P, and the component can be pushed out to set the component at a desired position.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art may variously modify and modify the present invention without departing from the spirit of the invention as set forth in the claims below. It will be appreciated that this can be changed.

1 is a perspective view showing a conventional fin.

2 is an exploded perspective view of a positioning pin assembly in accordance with one embodiment of the present invention.

3 is a cross-sectional view of the positioning pin assembly shown in FIG. 2.

4 is a cross-sectional view showing an operating state of the positioning pin assembly of the present invention.

<Description of reference numerals for the main parts of the drawings>

10; A housing 40; Elastic adjustment screw

12; Setting hole 42; spin

14; Opening 50; Set screw screw

20; Plunger 52; head

                              54; Body

24; Base

26; Spring seat

28; Tapered arm

28a; Taper part

28b; Upper part

30; Compression coil spring

32; At one end

34: the other end

Claims (4)

In the positioning pin used for the jig to hold the part when assembling the part, Cylindrical housing, A plunger installed to be movable up and down in the housing; A compression coil spring installed inside the housing and applying an elastic force to the plunger, Is coupled to the lower end of the housing and includes a spring elastic adjustment screw for adjusting the strength of the tensile stress of the spring, The plunger includes a plurality of taper arms extending in parallel with each other, a base supporting the taper arms, wherein the taper arms have a taper portion extending from the base portion, and an upper portion inclined inwardly at an angle from the taper portion. Provided with And said taper arm is increased in diameter from said base toward said upper end such that the component is not disengaged when the component is inserted and moved or rotated. The method according to claim 1, And a set screw screw to prevent loosening of the spring tension adjusting screw. The method according to claim 1, And 6 taper arms of the plunger. The method according to claim 1, And a spring sheet for supporting the compression coil spring on the bottom of the base of the plunger.

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