KR101126768B1 - Backup pin and chip mounter having the same - Google Patents

Abstract

The present invention provides a backup pin and a component mounter having the same. The backup pin is a hollow body, a rod that is fitted into the interior of the body to move up and down along the inside of the body, a support spring that is fitted into the interior of the body to elastically support the lower portion of the rod, coupled to the lower portion of the body And a spring support for supporting the support spring, and a one-way bearing coupled to the side of the body such that its outer circumferential surface is in contact with the side of the rod, allowing only the downward movement of the rod and restricting the upward movement. one-way bearing). Therefore, according to the present invention, since the one-way bearing which allows only the downward movement of the rod and restricts the movement in the upward direction is provided in the backup pin, the position of the rod without the rod fixing operation by the operator when setting the height of the backup pin is provided. Can be set and fixed. Therefore, by using the backup pin of the present invention and the component mounter having the same, the height setting time of the backup pin can be shortened.

Parts, mounting

Description

Backup pin and chip mounter having the same}

The present invention relates to a backup pin and a component mounter having the same, and more particularly, to a backup pin for supporting the bottom of the substrate in the process of mounting the component and a component mounter having the same.

In general, a component mounter such as a chip mounter refers to a device for mounting a component such as a semiconductor chip on a substrate such as a printed circuit board.

The component mounting process of the component mounter includes a substrate supplying step of supplying a substrate such as a printed circuit board to the component mounting area, a substrate fixing step of fixing the substrate supplied to the component mounting area, and supporting a bottom surface of the fixed substrate. And a step of mounting the component on the substrate which is fixed and whose bottom is supported.

In this case, the substrate supporting step for supporting the bottom of the fixed substrate is performed by a backup table that is raised and lowered by a predetermined height and a backup pin installed on the backup table.

1 is a cross-sectional view showing an example of a conventional backup pin.

Referring to FIG. 1, a conventional backup pin 50 is inserted into a hollow body 52, the body 52, and moves up and down along the inside of the body 52. A support spring 53 fitted into the body 52 to support the bottom of the rod 51, a spring support 55 is coupled to the lower portion of the body 52 to support the bottom of the support spring 53 And, it is coupled to the side of the body 52 includes a clamp (clamp, 54) for fixing the rod (51).

Thus, in the conventional backup pin 50, the rod 51 and the support spring 53 is fitted into the body 52, the spring support 55 is coupled to the lower portion of the body 52 and the clamp 54 Is assembled to the side of the body 52, and is assembled on the backup table after the assembly.

Hereinafter, a method of supporting a substrate with a backup pin 50 will be described in detail with reference to FIGS. 2 and 3.

2 is a view for explaining a state when the substrate is supported without fixing the rod of the conventional backup pin shown in Figure 1, (a) is a view showing a state before the conventional backup pin to support the substrate. , (b) is a view showing a state in which the backup table is raised so that the conventional backup pin supports the substrate, and (c) is a view showing the state in which the backup table is returned to its original position. 3 is a view for explaining a state when the substrate is supported after fixing the rod of the conventional backup pin shown in FIG. 1, (a) shows a state of supporting a substrate having a predetermined thickness with the backup pin. (B) is a diagram showing a state when a substrate having a thicker thickness than the case of (a) is supported in the state where the backup pin is set as in (a).

First, referring to FIG. 2A, the substrate 10 transferred to the component mounting region by the substrate transfer device 30 is fixed in the component mounting region by the substrate clamp 20. Next, when the substrate 10 is fixed, the backup table 40 is raised so that the backup pin 50 supports the central portion of the fixed substrate 10. Accordingly, the conventional backup pin 50 supports the central portion of the substrate 10 as shown in FIG. 2B, and the component mounting head (not shown) mounts the component on the substrate 10.

Subsequently, when the component is mounted, the backup table 40 is lowered as shown in FIG. 2C so that the substrate 10 on which the component is mounted is transferred to a subsequent process position. Therefore, the backup pin 50 is also lowered like this backup table 40, and the substrate 10 is transferred to the subsequent process position by the substrate transfer device 30.

At this time, the conventional backup pin 50 is configured to move freely up and down inside the backup pin body 52 when the rod 51 is not fixed by the clamp 54, as shown in FIG. When the backup table 40 is lowered, the rod 51 that has been brought into contact with the substrate 10 and moved into the body 52 is returned to its original position as the backup table 40 is lowered. Therefore, in order to support the center portion of the substrate 10 again with the conventional backup pin 50, there is a problem that the backup table 40 must be raised very high as shown in FIG.

Therefore, in order to support the bottom surface of the substrate 10 very quickly and smoothly with the conventional backup pin 50, the position of the rod 51 is set in accordance with the substrate 10 to be conveyed, and the clamp 54 is used to The rod 51 must be fixed at the set position. Therefore, conventionally, the user sets the position of the rod 51 in accordance with the substrate 10 prior to the progress of the component mounting process, and after setting the position, the rod 51 is fixed to the set position using the clamp 54. I'm making it.

However, not only takes a lot of time to perform the rod fixing operation as described above, in the case of the substrate 10 having a very narrow width, it is very difficult to insert the hand between the substrate transfer device 30.

In addition, even when the rod position is set and fixed as shown in FIG. 3 (a) through a difficult process as described above, if the substrate 10 'working as shown in FIG. 3 (b) is changed, it is set at a predetermined position. And the fixed rod 51 may collide with a predetermined region (A of FIG. 3) of the substrate 10 ′ and cause the substrate 10 ′ to be broken. There is a hassle that has to be done every time, that is, whenever a task changes.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a backup pin and a component mounter having the same, which can shorten the height setting time.

According to the first aspect of the present invention for solving the above problems, a backup pin is provided. The backup pin is a hollow body; A rod fitted into the body to move up and down along the inside of the body; A support spring fitted into the body to elastically support a lower portion of the rod; A spring support coupled to a lower portion of the body to support the support spring; And a one-way bearing coupled to the side of the body such that its outer circumferential surface is in contact with the side of the rod, and permits only downward movement of the rod and restricts movement in the upward direction.

In another embodiment, a first locking portion may be formed on one side of the rod to be in contact with an outer circumferential surface of the one-way bearing, and a second locking portion may engage the first locking portion on the outer circumferential surface of the one-way bearing. A locking portion may be formed. In this case, the first catching portion may be formed along the longitudinal direction of the rod.

On the other hand, according to the second aspect of the present invention for solving the above problems, a component mounting machine is provided. The component mounting apparatus includes a substrate transfer device for transferring a substrate to a component mounting region; A substrate clamp for fixing the substrate transferred to the component mounting region; A backup table that is selectively raised and lowered to support a bottom surface of the fixed substrate; Is installed on the upper surface of the backup table to selectively support the bottom of the fixed substrate, the hollow body, a rod fitted into the interior of the body to move up and down along the interior of the body, to support the lower portion of the rod elastically A support spring fitted into the body, a spring support coupled to the lower portion of the body and supporting the support spring, and coupled to a side of the body such that its outer circumferential surface is in contact with the side of the rod and is moved downward in the rod; It includes a backup pin with a one-way bearing that allows only but restricts upward movement.

In another embodiment, a first locking portion may be formed on one side of the rod to be in contact with an outer circumferential surface of the one-way bearing, and a second locking portion may engage the first locking portion on the outer circumferential surface of the one-way bearing. A locking portion may be formed.

According to the present invention, since the backup pin is provided with a one-way bearing that allows only the downward movement of the rod and restricts the movement in the upward direction, the position of the rod is set even when the height of the backup pin is set without an operator's rod fixing work. And can be fixed. Therefore, by using the backup pin of the present invention and the component mounter having the same, the height setting time of the backup pin can be shortened.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 4 to 6. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments disclosed herein are being provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Like numbers refer to like elements throughout.

4 is a perspective view showing an embodiment of a backup pin according to the present invention, Figure 5 is an exploded perspective view of the backup pin shown in FIG.

4 and 5, the backup pin 100 according to an embodiment of the present invention is formed in a hollow so that the rod 110 to be described later to be inserted and moved in the vertical direction, the bearing coupling portion 123 on one side ) Is provided with a body 120, the rod 110 is inserted into the interior of the body 120 through the lower end of the body 120 and moved up and down along the interior of the body 120, of the body 120 Is inserted into the support 110 to elastically support the lower portion of the rod 110 so that the upper portion of the rod 110 protrudes to the upper portion of the body 120, to support the lower portion of the support spring 130 It is coupled to the spring support 150, which is coupled to the lower portion of the body 120, the bearing coupling portion 123 provided on the side of the body 120 allows only the downward movement of the rod 110 to the upper direction One-way bearing (160) to limit movement and the one-way bear It includes a bearing cap 170 to cover 160.

Specifically, the bearing coupling portion 123 is formed on one side of the body 120, a portion of the one-way bearing 160 is formed to a size that can be fitted into the body (120). Accordingly, when the one-way bearing 160 is fitted to the bearing coupling part 123, one side of the rod 110 fitted into the body 120 may be an example of one surface of the one-way bearing 160. For example, it contacts with an outer peripheral surface.

The rod 110 is inserted into the body 120 through the lower end of the body 120 but is formed in a shape that does not deviate to the upper portion of the body 120. At this time, the length of the rod 110 is formed in such a size that the upper portion of the support spring 130 may protrude by a predetermined length to the upper portion of the body 120 when the support spring 130 supports the lower portion.

In addition, the first engaging portion 115 is formed on one side of the rod 110 to be in contact with the outer peripheral surface of the one-way bearing 160 coupled to the body 120, the rod 110 It is formed along the longitudinal direction. At this time, the shape of the first locking portion 115 may be implemented and changed in various forms. For example, the shape of the first catching portion 115 may be formed in an approximately uneven shape or a sawtooth (ΔΔ △) shape.

On the other hand, the one-way bearing 160 is a bearing capable of rotating only in a counterclockwise direction, as shown in FIG. 5, for example. 2 locking portions 165 are formed. Therefore, after the rod 110 is fitted into the body 120, when the one-way bearing 160 is fitted to the bearing coupling part 123, the first catching portion 115 of the rod 110 is provided. ) Is engaged with the second engaging portion 165 formed on the outer circumferential surface of the one-way bearing 160.

Therefore, the rod 110 is limited to be movable only in the lower direction and unable to move in the upper direction due to the one-way rotation function of the one-way bearing 160 together with the engagement of the engaging portions 115 and 165. . Here, the shape of the second locking portion 165 may be implemented and changed in various forms, such as the shape of the first locking portion 115. For example, the shape of the second locking portion 165 may be formed in an approximately uneven shape or a sawtooth (ΔΔ △) shape.

 In addition, the anti-rotation projection 162 is installed at the center of both sides of the one-way bearing 160. Therefore, in the process, when the reverse rotation of the one-way bearing 160 is required, the worker pulls or moves the anti-rotation release protrusion 162 by a predetermined amount. In this case, the one-way bearing 160 is temporarily reversed in the direction that the rotation was prevented, the rod 110 that was moved to the lower portion of the body 120 due to the elastic support of the support spring 130 The initial position, that is, is moved to the upper side of the body 120. Reference numeral 121 is a cap 121 coupled to the top of the body 120.

Hereinafter, referring to FIG. 6, a component mounter having a backup pin 100 according to the present invention and a substrate supporting method of the component mounter will be described in detail.

6 is a view for explaining a state when the substrate is supported by using the backup pin of the present invention shown in Figure 4, (a) is a view showing a state before the backup pin of the present invention supports the substrate, (b) is a figure which shows the state which raised the backup table, and this invention backup pin supported the board | substrate, (c) is the figure which showed the state which returned the backup table to the original position.

First, referring to FIG. 6 (a), the component mounter according to the present invention includes a substrate transfer device 30 for transferring the substrate 10 to the component mounting region, and a substrate 10 transferred to the component mounting region. A substrate clamp 20 for fixing, a backup table 40 that is selectively raised and lowered to support a bottom surface of the fixed substrate 10, and a substrate 10 installed on an upper surface of the backup table 40. And a backup pin (100) for selectively supporting the underside. In this case, since the backup pin 100 according to the present invention is the backup pin 100 of FIGS. 4 to 5 as described above, a detailed description of the backup pin 100 will be omitted below. Only the substrate supporting method will be described in detail.

As shown in FIG. 6A, when the substrate 10 is transferred to the component mounting region by the substrate transfer device 30, the substrate clamp 20 fixes the substrate 10 transferred to the component mounting region.

Next, when the substrate 10 is fixed, the backup table 40 is raised so that the backup pin 100 supports the central portion of the fixed substrate 10. At this time, since the one-way bearing 160 is provided inside the backup pin 100, and the rod 110 of the backup pin 100 is engaged with the one-way bearing 160, the backup pin 100 as described above. When this rises, the rod 110 of the backup pin 100 is in contact with the substrate 10 without a separate rod fixing operation of the operator is automatically set its height, after setting as shown in Figure 6 (b) The center portion of the substrate 10 is supported. Therefore, the component mounting head (not shown) mounts the component on the substrate 10.

Subsequently, when the component is mounted, the backup table 40 is lowered as shown in FIG. 6C so that the substrate 10 on which the component is mounted is transferred to a subsequent process position. Accordingly, the backup pin 100 is also lowered like the backup table 40, and the substrate 10 is transferred to the subsequent process position by the substrate transfer device 30.

At this time, in the conventional backup pin 50, if the worker does not separately fix the rod 51, since the rod 51 is returned to the upper portion of the backup pin 50, the rod fixing operation of the operator was necessary. In the case of the backup pin 100 according to the present invention, the first locking portion 115 of the rod 110 is engaged with the second locking portion 165 of the one-way bearing 160, and the one-way bearing ( Since the 160 is only rotated in one direction unless a separate external force is applied, the rod 110 according to the present invention maintains the set position.

Therefore, in the case of the backup pin 100 according to the present invention, when setting the height of the backup pin 100, it is possible to set and fix the position of the rod 110 without the rod fixing operation of the operator.

Therefore, using the backup pin 100 according to the present invention, not only can significantly shorten the height setting time of the backup pin 100, but also the backup pin 100 for controlling the width of the substrate transfer device 30. Even if it is removed and then reinstalled, the set height of the backup pin 100 can be maintained as it is.

In addition, when the component mounting process, the reverse rotation of the one-way bearing 160 is necessary, that is, when the height setting of the backup pin 100 is required again, the worker prevents the rotation of the one-way bearing 160 The release protrusion 162 is pulled or moved by a predetermined amount. Therefore, the one-way bearing 160 is temporarily rotated in the reverse direction to prevent the rotation, the rod 110 that was moved to the lower portion of the body 120 is first due to the elastic support of the support spring 130 In position, the upper side of the body 120 is moved. Thus, the operator can again set the height of the backup pin (100).

In addition, in the case of the backup pin 100 according to the present invention, since the rod 110 of the backup pin 100 can be moved in the downward direction, the thickness of the substrate 10 'to be used later by a change in work or the like. If is thicker than the thickness of the substrate 10 currently being used, it is possible to set its height directly using the backup pin 100 according to the present invention without any additional work of the operator. That is, by using the backup pin 100 according to the present invention, it is possible to shorten the process time by the height setting time of the backup pin 100 as compared with the conventional.

As mentioned above, although the present invention has been described with reference to the illustrated embodiments, it is only an example, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the scope of the present invention should be defined by the appended claims and their equivalents.

1 is a cross-sectional view showing an example of a conventional backup pin.

2 is a view for explaining a state when the substrate is supported without fixing the rod of the conventional backup pin shown in Figure 1, (a) is a view showing a state before the conventional backup pin to support the substrate. , (b) is a view showing a state in which the backup table is raised so that the conventional backup pin supports the substrate, and (c) is a view showing the state in which the backup table is returned to its original position.

3 is a view for explaining a state when the substrate is supported after fixing the rod of the conventional backup pin shown in Figure 1, (a) shows a state of supporting a substrate having a predetermined thickness with the backup pin. (B) is a diagram showing a state when a substrate having a thicker thickness than in the case of (a) is supported in the state where the backup pin is set as in (a).

Figure 4 is a perspective view showing one embodiment of a backup pin according to the present invention.

5 is an exploded perspective view of the backup pin shown in FIG. 4.

6 is a view for explaining a state when the substrate is supported by using the backup pin of the present invention shown in Figure 4, (a) is a view showing a state before the backup pin of the present invention supports the substrate, (b) is a figure which shows the state which raised the backup table, and this invention backup pin supported the board | substrate, (c) is the figure which showed the state which returned the backup table to the original position.

Claims (5)

Hollow body; A rod fitted into the body to move up and down along the inside of the body; A support spring fitted into the body to elastically support a lower portion of the rod; A spring support coupled to a lower portion of the body to support the support spring; And, And a one-way bearing coupled to the side of the body such that its outer circumferential surface is in contact with the side of the rod, the one-way bearing allowing only downward movement of the rod and limiting upward movement. The method of claim 1, One side of the rod is formed with a first locking portion to be in contact with the outer peripheral surface of the one-way bearing, And a second locking portion is formed on an outer circumferential surface of the one-way bearing to engage the first locking portion. 3. The method of claim 2, The first pin is a backup pin, characterized in that formed along the longitudinal direction of the rod. A substrate transfer device for transferring the substrate to the component mounting region; A substrate clamp for fixing the substrate transferred to the component mounting region; A backup table selectively raised and lowered to support a bottom surface of the fixed substrate; Is installed on the upper surface of the backup table to selectively support the bottom of the fixed substrate, the hollow body, a rod fitted into the interior of the body to move up and down along the interior of the body, to support the lower portion of the rod elastically A support spring fitted into the body, a spring support coupled to the bottom of the body and supporting the support spring; Component mounter comprising a back-up pin with a one-way bearing which only allows but restricts upward movement. The method of claim 4, wherein One side of the rod is formed with a first locking portion to be in contact with the outer peripheral surface of the one-way bearing, And a second locking portion formed on an outer circumferential surface of the one-way bearing to engage with the first locking portion.

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