TWI692551B - Asymmetric water seal conductive clamp - Google Patents

Abstract

An asymmetric water seal conductive clamp at least includes a first clamp arm, a second clamp arm, a first soft sealing member, a second soft sealing member, and a plurality of hard protective sleeves. The opposite side surfaces of the first and second clamp arms respectively have a first bump and a second bump corresponding to the position of the clamping surface. The first soft sealing member has a first hole corresponding to the position of the first bump and a plurality of first idle openings disposed two sides of the first hole respectively. The second soft sealing member has a second hole corresponding to the position of the second bump and a plurality of second idle openings disposed two sides of the second hole respectively. The hard-protective sleeves cover the surfaces of the first and the second clamp arms.

Description

Asymmetric water seal conductive clip

The invention relates to a processing equipment, and in particular to an asymmetric water-sealed conductive clip.

In the printed circuit board (PCB) or other related industries, the development of electroplating technology continues to evolve with the needs of users, especially for the quality of manufactured products and their output, often unable to take into account.

In terms of the electroplating of the PCB process, as the required contact area of the workpiece (that is, the product target) is as large as possible, the current method is to increase the clamping area of the object to be plated, and to have good plating The liquid barrier effect causes waste of the edge material of the product target. Under actual mass production, it is found that if the clamping arm enters the plating solution, if the plating solution comes into contact with the bumps, it will cause the bumps to be more or less plated with residual copper, resulting in poor quality. When it reaches a certain level, It must be manually removed by chemical liquid cleaning (reverse plating) to remove residual copper, in addition to increasing pollution will also increase costs.

In addition to electroplating technology, all equipment that requires conductive clips will also encounter the above-mentioned technical problems.

The invention provides an asymmetrical water-sealed conductive clip, which can avoid or reduce the increase of pollution and the increase of cost, in addition to reducing the waste of the edge material of the product target.

The asymmetric water-sealed conductive clip of the present invention at least includes a first clip arm, a second clip arm, a first soft seal, a second soft seal, and several hard protective sleeves. The opposite side surfaces of the first and second clamping arms respectively have first and second protrusions corresponding to the positions of the clamping surfaces. When the first clamping arm clamps a workpiece, the contact area between the first projection and the workpiece is smaller than the clamping surface of the first projection. When the second clamping arm clamps the workpiece, the contact area of the second projection and the workpiece is smaller than the clamping surface of the second projection. The first soft seal has a first opening with a position corresponding to the first protrusion and a plurality of first idle openings located on both sides of the first opening, wherein the first opening covers the periphery of the first protrusion, And each of the first idle openings is disposed on the side of the first protrusion. The second soft seal has a second opening with a position corresponding to the second protrusion and a plurality of second idle openings respectively located on both sides of the second opening, wherein the second opening covers the periphery of the second protrusion, And each of the second idle openings is disposed on the side of the second bump. The hard protective sleeve covers the surfaces of the first and second clamping arms.

In an embodiment of the invention, the width of the clamping surface of the first bump is greater than half of the width of the first clamping arm.

In an embodiment of the invention, the width of the clamping surface of the second bump is greater than half of the width of the second clamping arm.

In an embodiment of the invention, the width of the portion where the first protrusion is provided on the first clamping arm is greater than the width of the remaining portions.

In an embodiment of the invention, the width of the portion where the second protrusion is provided on the second clip arm is greater than the width of the remaining portions.

In an embodiment of the present invention, the contact area between the first bump and the workpiece is equal to or less than half, 1/3, or 2/3 of the clamping surface of the first bump.

In an embodiment of the invention, the contact area between the second bump and the workpiece is equal to or less than half, 1/3, or 2/3 of the clamping surface of the second bump.

In an embodiment of the invention, the number of the first idle openings is more than 2.

In an embodiment of the invention, the number of the second idle openings is more than 2.

Based on the above, the sealing member of the present invention designed by a specific structure can be used to seal the bumps without the need to completely sandwich the bumps in the past, although the bumps are not sandwiched by the upper half of the bumps, but can be sealed by soft The upper part of the part is designed in an asymmetrical way, so that the part above the soft seal can be closely attached, blocking the leakage of the chemical liquid or other processing solution from the upper side or the side to the bump clamping surface as the electrode, resulting in the bumps also being plated Residual copper affects the quality, and it is even necessary to manually remove the residual copper by chemical liquid cleaning (reverse plating) to increase pollution and cost. Moreover, soft seals (such as rubber) may also be coated with residual copper, so the idle openings designed on both sides of the bump can provide several soft spaces so that the infiltrating conductive liquid will not directly infiltrate the conductive bump In addition to protecting the bumps, the soft parts of the inner ring of the bumps can also be protected.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

The following disclosure provides many different embodiments or examples for implementing different features of the present invention. Of course, these embodiments are only examples and are not intended to limit the scope and application of the present invention. Furthermore, for the sake of clarity, the relative thicknesses and positions of various components, films, or regions may be reduced or enlarged. In addition, similar or identical element symbols are used in each drawing to indicate similar or identical elements or features, and if the same element symbol in the drawings is the same as the previous figure, its redundant description will be omitted.

FIG. 1 is a schematic cross-sectional view of an asymmetric water-sealed conductive clip according to an embodiment of the invention.

Referring to FIG. 1, the asymmetric water-sealed conductive clip 100 in the embodiment at least includes a first clip arm 102, a second clip arm 104, a first soft seal 106, a second soft seal 108 and a hard protective cover 110. "Soft" and "hard" are relative terms in the text; in detail, soft is a deformable material, hard is an indeformable material, or a material with a lower amount of deformation than soft. In addition, the asymmetric water-sealed conductive clip 100 of this embodiment may be further provided with a transfer rod 112, two elastic elements 114a and 114b connected to the transfer rod 112 and the first and second clamp arms 102 and 104, respectively, and from The first and second clamp arms 102 and 104 are respectively connected to the two movable brackets 118a and 118b of the rotating shaft 116 on the transfer rod 112. The figure shows the case where the first and second clamp arms 102 and 104 clamp a workpiece 120. If a force F is applied to the first and second clamp arms 102 and 104, the asymmetric water-sealed conductive clamp 100 can be made turn on. However, the present invention is not limited to this, and the other components of the asymmetric water-sealed conductive clip 100 connected to the first and second clip arms 102 and 104 may also adopt other designs.

Please refer to FIGS. 2A and 2B for detailed structures of the first and second clamp arms 102 and 104. FIG. 2A is a partially enlarged view of the first and second clamp arms 102 and 104 of FIG. FIG. 2B is a front view of the first (or second) clamp arm in FIG. 2A, and the first clamp arm 102 is taken as an example, and some components are omitted for clarity.

2A and 2B, a side surface 102a of the first clamping arm 102 has a first protrusion 122, the first protrusion 122 has a clamping surface 122a and a side surface 122b, wherein the clamping surface 122a refers to the surface of the clamping workpiece 120 And, the first bump 122 is a part of the first clamping arm 102, so its material is the same as the first clamping arm 102, such as stainless steel or other conductive materials. The structure of the second clamping arm 104 basically corresponds to the first clamping arm 102. For example, a side 104a facing the first clamping arm 102 has a second protrusion 124, and the second protrusion 124 has a clamping surface 124a and a side 124b , And the position of the clamping surface 124a of the second protrusion 124 corresponds to the position of the clamping surface 122a of the first protrusion 122, and the second protrusion 124 is a part of the second clamping arm 104, so its material is the same as that of the second clamping arm 104, For example, stainless steel or other conductive materials.

The first soft seal 106 has a first opening 106a corresponding to the first bump 122 and first idle openings 106b located on both sides of the first opening 106a, wherein the first opening 106a covers the first bump The periphery of 122, and each first idle opening 106b is disposed on the side 122b of the first bump 122, to prevent the chemical liquid or other processing solution from directly infiltrating into the conductive first bump 122 from the side, in addition to protecting the first Outside of the bump 122, the soft part of the first opening 106a may also be protected. The second soft seal 108 also has a second opening 108a corresponding to the position of the second bump 124 and second idle openings 108b located on both sides of the second opening 108a, wherein the second opening 108a covers the second bump 124 The periphery, and each second idle opening 108b is disposed on the side 124b of the second bump 124 to prevent the chemical liquid or other processing solution from directly seeping into the conductive second bump 124 from the side, in addition to protecting the second bump In addition to 124, the soft part of the second opening 108a may be protected. In this embodiment, the number of the first idle openings 106b is two, but the invention is not limited thereto. The number of the first idle openings 106b may also be more than two, for example, two on each side of the first opening 106a The first idle opening 106b, so there are a total of four first idle openings 106b, and so on. Similarly, the number of second idle openings 108b is two, but the invention is not limited to this, the number of second idle openings 108b may also be more than two, for example, two second idles on both sides of the second opening 108a There are openings 108b, so there are a total of four second idle openings 108b, and so on. The hard protective cover 110 covers the surfaces of the first and second clamping arms 102 and 104, see FIG. 2A. In this embodiment, the hard protective cover 110 covers the surface of the first clamping arm 102 close to the first bump 122 and the surface of the second clamping arm 104 close to the second bump 124, but the invention is not limited to this The rigid protective cover 110 may also extend all the way to the surfaces of the first and second clamping arms 102 and 104 near the movable brackets 118a and 118b of FIG. 1.

In this embodiment, when the first and second clamping arms 102 and 104 clamp the workpiece 120, as shown in FIG. 2A, the workpiece 120 (to-be-plated) does not need to completely clamp the first and second bumps as in the past 122 and 124 (for example, the contact area of the first bump 122 and the workpiece 120 is smaller than the clamping surface 122a of the first bump 122, and the contact area of the second bump 124 and the workpiece 120 is smaller than the clamping surface 124a of the second bump 124), Therefore, the upper half of the first and second protrusions 122 and 124 does not clamp the workpiece 120. According to the previous clamp, if clamped in this way, the liquid will enter this space. However, the present invention adopts an asymmetrical design on the upper parts of the first and second soft seals 106 and 108 to allow the upper soft seals (106 and 108) to closely adhere to each other, thereby solving the above-mentioned liquid entry problem. For example, the contact area between the first bump 122 and the workpiece 120 may be equal to or smaller than half, 1/3, or 2/3 of the clamping surface 122a of the first bump 122, but the present invention is not limited thereto. Similarly, the contact area between the second bump 124 and the workpiece 120 is, for example, equal to or less than half, 1/3, or 2/3 of the clamping surface 124a of the second bump 124, but the present invention is not limited thereto. Once the workpiece 120 is clamped, the portions of the first and second clamping arms 102 and 104 that are in contact with the workpiece 120 (ie, the first and second bumps 122/124) will closely adhere to the workpiece 120, and the first and second The bumps 122/124 will stick to each other and seal the upper edge of the workpiece 120, showing an asymmetrical appearance, so as to achieve the function of blocking the entry of the chemical liquid through the top. The side surfaces 122b of the first and second bumps 122/124 /124b has the first and second idle openings 106b/108b to achieve the function of temporarily storing the infiltrated chemical liquid, so it can effectively prevent the first and second bumps 122 and 124 from growing copper.

2B, in this embodiment, the width w1 of the clamping surface 122a of the first protrusion 122 is greater than half the width w2 of the first clamping arm 102; the width w1 of the clamping surface 124a of the second protrusion 124 is greater than The width w2 of the second clamp arm 104 is more than half. Moreover, the width w2 of the portion of the first clamping arm 102 where the first protrusion 122 is provided may be greater than the width w3 of the rest of the portion; the width w2 of the portion of the second clamping arm 104 where the second protrusion 124 is provided is greater than the width w3 of the remaining portion .

FIG. 3 is a partially enlarged perspective view of the first (or second) clamping arm 102 (or 104) of FIG. 1, and FIG. 3 is a case where the asymmetrical water-sealed conductive clamp is opened, so the clamping surface 122a of the first protrusion 122 Slightly retracted into the first opening 106a, the clamping surface 124a of the second protrusion 124 is slightly retracted into the second opening 108a, to facilitate the first and second soft seals when the workpiece is clamped by the asymmetric water-sealed conductive clip The pieces 106 and 108 can tightly seal the first and second bumps 122 and 124. At the same time, the first and second idle openings 106b and 108b have a space for accommodating the infiltrated drug solution or other treatment solutions.

In summary, the present invention does not need to completely clamp the bump as in the traditional, so the upper half of the bump is not clamped by the plated object. According to the previous clamp, if the workpiece is clamped in this way, the liquid will enter, and To solve the above situation, the present invention uses the asymmetric design above the soft seal to allow the upper soft part to closely fit to block the liquid from entering, at the same time reducing the area of the invalid area of the workpiece edge (board edge) and preventing the chemical solution Or other treatment solution leaked to the electrode bump surface, resulting in bumps will also be coated with residual copper to affect the quality, and even need to be manually removed by chemical liquid cleaning (reverse plating) to increase pollution and cost problem. Moreover, the idle openings designed on both sides of the bump can provide several soft spaces, so that the infiltrating conductive liquid will not directly penetrate into the conductive bump. In addition to protecting the bump, it can also protect the softness of the inner ring of the bump section.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

100: Asymmetrical water seal conductive clip 102: First clamp arm 102a, 104a: (clamp arm) side 104: second clamp arm 106: The first soft seal 106a: the first opening 106b: The first idle opening 108: second soft seal 108a: second opening 108b: second idle opening 110: Hard protective sleeve 112: Teleporter 114a, 114b: elastic element 116: axis of rotation 118a, 118b: movable bracket 120: Workpiece 122: First bump 122a, 124a: surface 122b, 124b: (bumped) side 124: second bump F: force w1, w2, w3: width

FIG. 1 is a schematic cross-sectional view of an asymmetric water-sealed conductive clip according to an embodiment of the invention. FIG. 2A is a partial enlarged view of the first and second clamping arms of FIG. 1. FIG. FIG. 2B is a front view of the first (or second) clamp arm in FIG. 2A. 3 is a partially enlarged perspective view of the first (or second) clamp arm of FIG. 1.

102: First clamp arm

104: second clamp arm

102a, 104a: (clamp arm) side

106: The first soft seal

106a: the first opening

106b: The first idle opening

108: second soft seal

108a: second opening

108b: second idle opening

122: First bump

122a, 124a: surface

122b, 124b: (bumped) side

124: second bump

w1, w2, w3: width

Claims (9)

An asymmetric water-seal conductive clip, including: A first clamping arm has a first protrusion on one side, and when the first clamping arm clamps a workpiece, the contact area between the first protrusion and the workpiece is smaller than that of the first protrusion Surface A second clamping arm having a second protrusion on a side opposite to the first clamping arm, the clamping surface position of the second protrusion corresponding to the clamping surface position of the first protrusion, and When the second clamping arm clamps the workpiece, the contact area between the second protrusion and the workpiece is smaller than the clamping surface of the second protrusion; A first soft seal has a first opening corresponding to the first bump and a plurality of first idle openings respectively located on both sides of the first opening, wherein the first opening covers the A periphery of the first protrusion, and each of the first idle openings is provided on the side of the first protrusion; A second soft seal having a second opening corresponding to the second bump and a plurality of second idle openings respectively located on both sides of the second opening, wherein the second opening covers the A periphery of the second bump, and each of the second idle openings is provided on the side of the second bump; and A plurality of hard protective sleeves respectively cover the surface of the first clamping arm and the surface of the second clamping arm. The asymmetric water-sealed conductive clip as described in item 1 of the patent application range, wherein the width of the clamping surface of the first bump is greater than half of the width of the first clamping arm. The asymmetric water-sealed conductive clip as described in item 1 of the patent application range, wherein the width of the clamping surface of the second bump is greater than half of the width of the second clamping arm. The asymmetric water-sealed conductive clip as described in item 1 of the patent application range, wherein the width of the part where the first protrusion is provided on the first clip arm is larger than the width of the remaining parts. The asymmetrical water-sealed conductive clip as described in item 1 of the scope of the patent application, wherein the width of the part where the second protrusion is provided on the second clip arm is larger than the width of the remaining parts. The asymmetric water-seal conductive clip as described in item 1 of the patent application range, wherein the contact area between the first bump and the workpiece is equal to or less than half of the clamping surface of the first bump, 1 /3 or 2/3. The asymmetrical water-sealed conductive clip according to item 1 of the patent application scope, wherein the contact area of the second bump and the workpiece is equal to or less than half of the clamping surface of the second bump, 1 /3 or 2/3. The asymmetric water-sealed conductive clip as described in item 1 of the patent application scope, wherein the number of the first idle openings is more than 2. The asymmetric water-sealed conductive clip as described in item 1 of the patent application scope, wherein the number of the second idle openings is more than 2.

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