Carrier tape and packaging using the same
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- TAIYO YUDEN KK
- Filing Date
- 2022-06-08
- Publication Date
- 2026-08-05
Smart Images
Figure 0007900953000001 
Figure 0007900953000002 
Figure 0007900953000003
Abstract
Description
Technical Field
[0001] The present invention relates to a carrier tape for accommodating components.
Background Art
[0002] In order to convey various components such as electronic components to a mounting device, a carrier tape provided with a plurality of recesses for accommodating the respective components is used. As the carrier tape, an embossed carrier tape in which a plurality of recesses are formed by embossing a resin tape is known (see, for example, Patent Document 1).
[0003] [[ID=1,6]]Due to the characteristics of the resin constituting the carrier tape, deformation may occur over the entire carrier tape including the recesses as the environment such as temperature and humidity during transportation changes. As a result, in the carrier tape, displacement may occur in the position of the recesses, and in some cases, the components accommodated in the recesses in the mounting device cannot be accurately adsorbed.
[0004] Therefore, it is preferable to select the resin constituting the carrier tape so that deformation hardly occurs according to the environment during transportation. Specifically, as the resin constituting the carrier tape, for example, a resin with high heat resistance can be selected when the temperature change during transportation is large, and a resin with high moisture resistance can be selected when the humidity change during transportation is large.
Prior Art Documents
Patent Documents
[0005]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0006] However, depending on the type of resin that makes up the carrier tape, the components may become trapped inside the recesses due to factors such as tackiness or static electricity at the bottom of the recesses, making them difficult to remove. This problem is more likely to occur with smaller components. For this reason, it is preferable that the carrier tape be configured to allow for more reliable removal of components from within the recesses, regardless of the type of resin it is made of.
[0007] In view of the above circumstances, the object of the present invention is to provide a carrier tape that allows for more reliable removal of components from recesses, and a packaging body using the same. [Means for solving the problem]
[0008] To achieve the above objective, a packaging body according to one embodiment of the present invention comprises a resin carrier tape having a main surface perpendicular to a uniaxial axis and a recess that is recessed in one direction from the main surface along the uniaxial axis, a component housed in the recess, and a top tape attached to the main surface and covering the recess. The recess has a bottom surface perpendicular to the axis and a projection that protrudes from the bottom surface toward the other axis. The above-mentioned protruding portion has a central portion located in the center of the bottom surface and a plurality of extensions that radiate outward from the central portion.
[0009] In this carrier tape, the protrusions extending from the bottom surface of the recess create a gap between the component housed in the recess and the bottom surface, reducing the contact area with the component. As a result, regardless of the type of resin used to form the carrier tape, the component is less likely to be confined within the recess. Furthermore, this carrier tape has a central section located in the center of the bottom surface of the protruding portion, which allows for stable holding of the component within the recess while minimizing the contact area with the component. In addition, this carrier tape has multiple extensions that radiate from the central section of the protruding portion, which allows components inserted into the recess 110 in an inclined position to be smoothly guided to the correct position without snagging along the extensions.
[0010] The base surface may have a rectangular contour. In this case, the multiple extensions may extend from the central portion toward the four corners of the base surface. Alternatively, the multiple extensions may extend from the central portion toward the center of each of the four sides of the base surface. Each of the above-mentioned extensions may have a cross-sectional surface perpendicular to the extension direction that narrows in width as it moves away from the bottom surface. The above component may also be a multilayer ceramic capacitor. The external dimensions of the above-mentioned component may be 0.25±0.02mm in length, 0.125±0.02mm in width, and 0.125±0.02mm in height. The external dimensions of the above-mentioned component may be 0.4 ± 0.02 mm in length, 0.2 ± 0.02 mm in width, and 0.2 ± 0.02 mm in height.
[0011] A resin carrier tape according to one embodiment of the present invention is used in packaging for parts. The carrier tape described above has a main surface perpendicular to the axis and a recess that is recessed from the main surface and accommodates the component. The recess has a bottom surface perpendicular to the axis and a protruding portion that extends from the bottom surface. The above-mentioned protruding portion has a central portion located in the center of the bottom surface and a plurality of extensions that radiate outward from the central portion.
[0012] The base surface may have a rectangular contour. In this case, the multiple extensions may extend from the central portion toward the four corners of the base surface. Alternatively, the multiple extensions may extend from the central portion toward the center of each of the four sides of the base surface. Each of the above-mentioned extensions may have a cross-sectional surface perpendicular to the extension direction that narrows in width as it moves away from the bottom surface. [Brief explanation of the drawing]
[0013] [Figure 1] This is a perspective view showing an example of components housed in a carrier tape. [Figure 2]It is a partial plan view of a carrier tape according to an embodiment of the present invention. [Figure 3] It is a partial cross-sectional view of the carrier tape along the line A-A' in FIG. 2. [Figure 4] It is a partial cross-sectional view of the carrier tape along the line B-B' in FIG. 2. [Figure 5] It is a plan view showing an enlarged recess of the carrier tape. [Figure 6] It is a plan view of a package using the carrier tape. [Figure 7] It is a cross-sectional view of the package along the line C-C' in FIG. 6. [Figure 8A] It is a diagram showing the process of taking out the parts housed in the carrier tape. <了 [Figure 8B] It is a diagram showing the process of taking out the parts housed in the carrier tape. [Figure 8C] It is a diagram showing the process of taking out the parts housed in the carrier tape. [Figure 9A] It is a diagram showing the process of taking out the parts housed in the carrier tape according to the comparative example. [Figure 9B] It is a diagram showing the process of taking out the parts housed in the carrier tape according to the comparative example. [Figure 9C] It is a diagram showing the process of taking out the parts housed in the carrier tape according to the comparative example. [Figure 10] It is a diagram showing the process of loading parts into the carrier tape. [Figure 11] It is a diagram showing the process of loading parts into the carrier tape according to the comparative example. [Figure 12A] It is a diagram illustrating the shape of the cross-section of the extension part of the protruding part of the carrier tape. [Figure 12B] It is a diagram illustrating the shape of the cross-section of the extension part of the protruding part of the carrier tape. [Figure 12C] It is a diagram illustrating the shape of the cross-section of the extension part of the protruding part of the carrier tape. <了 [Figure 13A]This is a plan view showing another embodiment of the protruding portion of the carrier tape described above. [Figure 13B] This is a plan view showing another embodiment of the protruding portion of the carrier tape described above. [Figure 13C] This is a plan view showing another embodiment of the protruding portion of the carrier tape described above. [Figure 13D] This is a plan view showing another embodiment of the protruding portion of the carrier tape described above. [Modes for carrying out the invention]
[0014] [Overall configuration of carrier tape 100] The overall configuration of a carrier tape 100 according to one embodiment of the present invention will be described. First, the components 10 to be housed in the carrier tape 100 will be briefly described. Figure 1 is a perspective view showing an example of a component 10. Figure 1 shows mutually orthogonal x, y, and z axes that define a fixed coordinate system fixed to the component 10.
[0015] Part 10 is preferably configured as a rectangular parallelepiped having six faces perpendicular to the x, y, and z axes, respectively, as shown in Figure 1. Each face of part 10 does not have to be flat throughout; for example, it may have minute steps. Also, the edges connecting each face of part 10 may be rounded by chamfering.
[0016] The components 10 that can suitably utilize the carrier tape 100 are not limited to specific components, but include components with a wide range of functions and applications. Typically, components 10 include electronic components such as multilayer ceramic capacitors, multilayer inductors, chip varistors, chip thermistors, chip inductors, and semiconductor devices.
[0017] Figure 2 is a partial plan view of the carrier tape 100 according to this embodiment. Figure 2 shows the mutually orthogonal X, Y, and Z axes that define a fixed coordinate system fixed to the carrier tape 100. The X, Y, and Z axes are also shown as appropriate in Figures 3 and beyond, and are common to all figures.
[0018] The carrier tape 100 is configured as a long tape extending in the Y-axis direction. The carrier tape 100 has multiple recesses 110 arranged at intervals in the Y-axis direction, each of which accommodates one component 10. In the carrier tape 100, the recesses 110 are formed, for example, by embossing a resin tape.
[0019] The carrier tape 100 has a main surface M which is an upward-facing surface perpendicular to the Z-axis, and the multiple recesses 110 are recessed downward in the Z-axis direction from the main surface M. In other words, the carrier tape 100 is configured such that parts 10 are loaded into the multiple recesses 110 from the main surface M side, and the parts 10 housed in the multiple recesses 110 are removed from the main surface M side.
[0020] In the carrier tape 100, multiple feed holes 120 are provided that are spaced apart in the Y-axis direction and penetrate in the Z-axis direction, at positions offset in the X-axis direction from the rows of recesses 110. The feed holes 120 are configured as engagement holes used by the tape transport mechanism to transport the carrier tape 100 in the Y-axis direction.
[0021] Figures 3-5 show the recesses 110 of the carrier tape 100. Figure 3 is a partial cross-sectional view of the carrier tape 100 along the line A-A' in Figure 2. Figure 4 is a partial cross-sectional view of the carrier tape 100 along the line B-B' in Figure 2. Figure 5 is a partial plan view of the carrier tape 100 showing an enlarged view of the recesses 110.
[0022] The recess 110 has a rectangular parallelepiped-shaped internal space enclosed by a bottom surface T perpendicular to the Z-axis and a side surface connecting the bottom surface T to the main surface M. The bottom surface T, like the main surface M, faces upward in the Z-axis direction and is a plane that defines the deepest part of the recess 110 from the main surface M. The bottom surface T has a rectangular contour with four sides along the X and Y axes.
[0023] In this embodiment, terms describing linear shapes such as rectangular or rectangular do not strictly refer only to those shapes. For example, they are not limited to shapes where each side is composed solely of straight lines, but also include shapes where each side is curved, or shapes that are rounded overall when the external size is small.
[0024] The recess 110 has a projection 111 that protrudes from the bottom surface T toward the main surface M. The projection 111 has a central portion 111a and a plurality of extensions 111b. In the projection 111, a top portion S is formed that extends continuously without interruption, with a substantially constant height from the bottom surface T, across the central portion 111a and the plurality of extensions 111b.
[0025] In the protruding portion 111, the central portion 111a is located in the center of the base surface T in the X and Y directions, and the multiple extensions 111b are located further outward from the central portion 111a in the X and Y directions. The multiple extensions 111b extend radially from the central portion 111a, that is, they extend in a dispersed direction without being biased in any particular direction from the central portion 111a.
[0026] More specifically, in the protruding portion 111, multiple extensions 111b extend from the central portion 111a towards the four corners of the base surface T. As a result, as shown in Figure 5, the protruding portion 111 as a whole has an X-shape. In other words, the protruding portion 111 extends along two diagonals of the rectangular contour of the base surface T, with the intersection being the central portion 111a.
[0027] [Effects of the protruding portion 111] In the carrier tape 100 according to this embodiment, a gap is formed between the component 10 housed in the recess 110 and the bottom surface T by the protruding portion 111 that protrudes from the bottom surface T of the recess 110, and the portion that can contact the component 10 is limited to the top S of the protruding portion 111. In other words, the contact area with the component 10 is reduced in the carrier tape 100.
[0028] As a result, the components 10 in the recess 110 of the carrier tape 100 are less susceptible to restraining forces that try to keep them in the recess 110 due to the adhesiveness of the bottom surface T caused by the type of resin that makes up the carrier tape 100, or due to static electricity generated on the bottom surface T. Therefore, the components 10 in the recess 110 can be smoothly removed from the carrier tape 100.
[0029] In particular, the smaller the external dimensions of the part 10, the easier it is for it to be confined within the recess 110, making it easier to effectively obtain the above-mentioned effect of the protrusion 111. In other words, the present invention is particularly effective when applied to parts 10 with small length in the x-axis direction, width in the y-axis direction, and height in the z-axis direction. Specifically, examples of external dimensions of parts 10 to which the present invention can be effectively applied include a length of 0.25±0.02 mm, a width of 0.125±0.02 mm, and a height of 0.125±0.02 mm, or a length of 0.4±0.02 mm, a width of 0.2±0.02 mm, and a height of 0.2±0.02 mm.
[0030] Furthermore, in the carrier tape 100, the central portion 111a of the protrusion 111 is located in the center of the bottom surface T, which allows the component 10 to be held stably within the recess 110 while keeping the contact area with the component 10 small. As a result, the carrier tape 100 makes it easier to maintain the correct orientation of the component 10 within the recess 110.
[0031] To specifically explain the above-mentioned effects of the protrusion 111 on the carrier tape 100, a package 200 using the carrier tape 100 will be described. Figures 6 and 7 show the package 200 according to this embodiment. Figure 6 is a partial plan view of the package 200. Figure 7 is a cross-sectional view of the package 200 along the line C-C' in Figure 6.
[0032] The packaging body 200 comprises a carrier tape 100, parts 10, and a top tape 210. In the packaging body 200, the top tape 210 is attached to the main surface M of the carrier tape 100 along a row of recesses 110, and the multiple recesses 110 containing the multiple parts 10 are collectively covered by the top tape 210.
[0033] The packaging 200 may be in various positions during storage and may be subjected to vibrations during transport. However, regardless of the position of the packaging 200 itself, and regardless of the vibrations the packaging 200 is subjected to, the position of the component 10, which is stably held within the recess 110 by the protruding portion 111 including the central portion 111a, is easily maintained in good condition.
[0034] When mounting the components 10 inside the packaging 200, the top tape 210 is peeled off from the carrier tape 100, and the multiple recesses 110 containing the multiple components 10 are opened upward in the Z-axis direction. Figures 8A to 8C show the process by which the components 10 are removed from the opened recesses 110 of the carrier tape 100 in the mounting device.
[0035] First, as shown in Figure 8A, the nozzle N of the mounting device is positioned above the recess 110 in the Z-axis direction. Next, as shown in Figure 8B, the nozzle N inserted into the recess 110 is pressed against the surface of the part 10 facing upward in the Z-axis direction, and the part 10 is attracted through the nozzle N. As a result, the part 10 is attracted to the tip of the nozzle N.
[0036] Then, as shown in Figure 8C, by moving the nozzle N upward in the Z-axis direction, the component 10 that has been attracted to the tip of the nozzle N can be removed from the recess 110. After the component 10 has been removed from the recess 110, it is aligned to the mounting position on the substrate while still attracted to the tip of the nozzle N, and then the suction via the nozzle N is released.
[0037] In the carrier tape 100, as described above, the component 10 is less likely to be constrained within the recess 110, and in particular, even when the nozzle N is pressed against the component 10 as shown in Figure 8B, it is less likely to be subjected to adhesive force from the top S of the protruding portion 111, which has a small contact area. For this reason, the component 10 can be smoothly removed from the carrier tape 100 by a nozzle N with a typical suction force.
[0038] In contrast, in the comparative example carrier tape 100' which does not have a protrusion 111, the component 10 may not be able to be smoothly removed by a nozzle N with a typical suction force. Figures 9A to 9C show the process by which the component 10 is removed from the open recess 110' of the carrier tape 100' in the comparative example in a mounting device.
[0039] First, as shown in Figure 9A, the nozzle N of the mounting device is positioned above the recess 110' in the Z-axis direction. Next, as shown in Figure 9B, the nozzle N inserted into the recess 110' is pressed against the surface of the part 10 facing upward in the Z-axis direction, and the part 10 is attracted through the nozzle N. As a result, the part 10 is attracted to the tip of the nozzle N.
[0040] In the comparative example carrier tape 100', the component 10 in the recess 110' is in direct contact with the bottom surface T, resulting in a large contact area with the component 10. For this reason, in the carrier tape 100', the component 10 in the recess 110' is susceptible to restraining forces that try to keep it in the recess 110' due to the adhesiveness of the bottom surface T and static electricity generated on the bottom surface T.
[0041] If the restraining force on the component 10 within the recess 110' is greater than the suction force of the nozzle N, then, as shown in Figure 9C, even if the nozzle N is moved upward in the Z-axis direction, the component 10 will detach from the tip of the nozzle N and remain within the recess 110'. Thus, in the carrier tape 100' according to the comparative example, it may be difficult to remove the component 10.
[0042] Furthermore, in the carrier tape 100 according to this embodiment, by providing a plurality of extensions 111b that radiate from the central portion 111a on the protruding portion 111, it is possible to smoothly insert the parts 10 into the recesses 110 when manufacturing the packaging body 200. Figure 10 is a diagram showing the process of inserting the parts 10 into the recesses 110 of the carrier tape 100.
[0043] In the carrier tape 100, as shown in Figure 10, the component 10 may be inserted into the recess 110 at an angle with respect to the main surface M. In this case, in the carrier tape 100, the ridge that contacts the top S of the protrusion 111 of the component 10 beforehand slides along the extension 111b away from the central part 111a without catching.
[0044] As a result, the part 10 is held in the correct position within the recess 110, with the surface facing downward in the Z-axis direction in contact with the top S across the central portion 111a and multiple extensions 111b of the protrusion 111. In this way, the carrier tape 100 smoothly guides the part 10, which is loaded into the recess 110, into the correct position.
[0045] Figure 11 shows a carrier tape 100'' according to a comparative example, which has a recess 110'' with a different configuration from that of this embodiment. The recess 110'' of the carrier tape 100'' according to the comparative example has a ridge-like projection 111'' consisting of a plurality of extensions 111b'' that extend along the Y-axis and are arranged in the X-axis direction.
[0046] The carrier tape 100'' in the comparative example is similar to the carrier tape 100 in the present embodiment in that the contact area with the component 10 is reduced by providing the protruding portion 111''. On the other hand, the carrier tape 100'' in the comparative example differs from the carrier tape 100 in the present embodiment in that the protruding portion 111'' does not have a configuration in which it extends radially.
[0047] In the carrier tape 100'' of the comparative example, as shown in Figure 11, when the component 10 is inserted into the recess 110'' at an angle with respect to the main surface M, the edge of the component 10 that comes into contact with the protrusion 111'' abuts against the protrusion 111''. In this case, with the carrier tape 100'', the component 10 remains in an angled position and is not properly accommodated within the recess 110''.
[0048] [Shape of the cross-section of the extension portion 111b] Figure 12A shows a cross-sectional view perpendicular to the extension direction from the central portion 111a at each extension portion 111b of the carrier tape 100 according to the above embodiment. The extension portion 111b shown in Figure 12A has a side wall surface perpendicular to the bottom surface T and has a rectangular cross-section with a uniform width in the height direction from the bottom surface T.
[0049] The cross-section of each extension 111b is not limited to the shape shown in Figure 12A, but can be of various shapes. For example, as shown in Figure 12B, the cross-section of each extension 111b can be a trapezoidal shape in which the width narrows as it moves away from the base T. In the extension 111b shown in Figure 12B, the width of the top S is narrower than in the extension 111b shown in Figure 12A.
[0050] Therefore, the protruding portion 111 having the extended portion 111b shown in Figure 12B can further reduce the contact area with the part 10. In addition, the extended portion 111b shown in Figure 12B reduces the contact resistance with the edge of the part 10 when it is tilted as shown in Figure 10, thus promoting the action of guiding the part 10 to the correct orientation.
[0051] Furthermore, as shown in Figure 12C, the cross-section of each extension 111b can be a convex curved surface that narrows in width as it moves away from the base T. In the extension 111b shown in Figure 12C, contact with the component 10 becomes substantially line contact. Therefore, the above effect is further enhanced in the extension 111b shown in Figure 12C than in the extension 111b shown in Figure 12B.
[0052] [Other embodiments] Although various embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the configuration of the protruding portion 111 is not limited to the configuration shown in Figure 5, and any configuration in which a plurality of extensions 111b radiate from the central portion 111a is acceptable.
[0053] From the viewpoint of smoothly guiding the part 10 to the correct orientation, it is preferable that the protruding portion 111 has multiple extensions 111b extending from the central portion 111a in at least four directions that are distributed without being biased towards any particular direction. Also, from a similar viewpoint, it is preferable that the planar shape of the protruding portion 111 has symmetry in both the X-axis and Y-axis directions.
[0054] For example, as shown in Figure 13A, the protrusion 111 may extend from the central part 111a toward the midpoints of each of the four sides of the base T. In other words, the protrusion 111 may be in the shape of a "+" overall. Also, as shown in Figure 13B, the protrusion 111 may extend from the central part 111a toward both the four corners of the base T and the midpoints of each of the four sides.
[0055] Furthermore, the protruding portion 111 may have multiple extensions 111b extending from the central portion 111a in the same direction. For example, as shown in Figure 13C, the protruding portion 111 may have a total of eight extensions 111b, two on each side in the X-axis direction and two on each side in the Y-axis direction from the central portion 111a.
[0056] In addition, as shown in Figure 13D, the protrusion 111 may be formed with a gap C from the contour of the bottom surface T. In this case, in order to obtain a good effect of guiding the part 10 to the correct orientation, it is preferable that each gap Lc in the X-axis direction is 20% or less of the dimension L of the bottom surface T, and each gap Wc in the Y-axis direction is 5% or less of the dimension W of the bottom surface T.
[0057] Furthermore, the carrier tape 100 according to this embodiment is not limited to the above configuration other than the protruding portion 111. For example, the carrier tape 100 may have configurations other than those described above as needed, and may not have the feed hole 120. Moreover, the packaging body 200 according to this embodiment may also have configurations other than those described above as needed. [Explanation of Symbols]
[0058] 100... Carrier Tape 110…recess 111...Protrusion 111a...Central part 111b...extension part 200...packaging 210... Top Tape M…Main surface T…Bottom surface S…Top
Claims
1. A resin carrier tape having a main surface perpendicular to a single axis and a recess extending in one direction from the main surface along the single axis; a component housed in the recess; and a top tape attached to the main surface and covering the recess. The recess has a bottom surface perpendicular to the one axis and a projection that protrudes from the bottom surface toward the other along the one axis, The protruding portion has a central portion located in the center of the base surface, and a plurality of extensions that extend radially from the central portion, the height of which from the base surface is the same as the height of the central portion from the base surface. packaging.
2. The packaging according to claim 1, The bottom surface has a rectangular outline, The plurality of extensions each extend from the central part toward the four corners of the bottom surface. packaging.
3. The packaging according to claim 1, The bottom surface has a rectangular outline, The plurality of extensions each extend from the central part toward the center of the four sides of the base. packaging.
4. A packaging according to any one of claims 1 to 3, Each of the aforementioned extensions has a cross-sectional shape perpendicular to the extension direction, in which the width narrows as it moves away from the bottom surface. packaging.
5. A packaging according to any one of claims 1 to 3, The aforementioned component is a multilayer ceramic capacitor. packaging.
6. A packaging according to any one of claims 1 to 3, The external dimensions of the aforementioned part are: length 0.25 ± 0.02 mm, width 0.125 ± 0.02 mm, and height 0.125 ± 0.02 mm. packaging.
7. A packaging according to any one of claims 1 to 3, The external dimensions of the aforementioned part are 0.4 ± 0.02 mm in length, 0.2 ± 0.02 mm in width, and 0.2 ± 0.02 mm in height. packaging.
8. A resin carrier tape used for packaging parts, It has a main surface perpendicular to a single axis, and a recess that is recessed from the main surface and accommodates the component, The recess has a bottom surface perpendicular to the axis and a protruding portion that extends from the bottom surface. The protruding portion has a central portion located in the center of the base surface, and a plurality of extensions that extend radially from the central portion, the height of which from the base surface is the same as the height of the central portion from the base surface. Carrier tape.
9. A carrier tape according to claim 8, The bottom surface has a rectangular outline, The plurality of extensions each extend from the central part toward the four corners of the bottom surface. Carrier tape.
10. A carrier tape according to claim 8, The bottom surface has a rectangular outline, The plurality of extensions each extend from the central part toward the center of the four sides of the base. Carrier tape.
11. A carrier tape according to any one of claims 8 to 10, Each of the aforementioned extensions has a cross-sectional shape perpendicular to the extension direction, in which the width narrows as it moves away from the bottom surface. Carrier tape.