Electronic component conveyor belt and electronic component conveyor reel

Abstract

The present invention provides an electronic component conveyor belt and an electronic component conveyor reel that reduce the adhesion of fibers on the surface of the carrier belt to the cover belt. The electronic component conveyor belt (1) of the present invention comprises: a long carrier belt (2) having a plurality of concave storage portions (5a) for accommodating electronic components (C) arranged at equal intervals in the length direction (L); and a long cover belt (3) adhered to one surface of the carrier belt (2) in the thickness direction (T) so as to cover the openings of the plurality of storage portions (5a), the carrier belt (2) being made of paper, and the fibers (f) contained in the carrier belt (2) being inclined in the thickness direction (T) relative to the length direction (L).

Description

Technical Field

[0001] The present invention relates to an electronic component conveyor belt and an electronic component conveyor reel. Background Art

[0002] When transporting tiny electronic components such as stacked ceramic capacitors, an electronic component conveyor is used, in which a large number of electronic components are stored in a long carrier tape and the top is covered with a cover tape. The electronic component conveyor is wound on a reel and transported together with the reel (see Patent Document 1).

[0003] Prior Art Literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2011-001081

[0006] When mounting electronic components, the electronic component conveyor tape is pulled out from the reel, and the cover tape is peeled off from the carrier tape to remove the electronic components. Here, when the carrier tape is made of paper, when the cover tape is peeled off from the carrier tape, there is a case where the fibers on the surface of the carrier tape adhere to the cover tape and are peeled off. The fibers attached to the surface of the cover tape are not disconnected in the middle, and the surface layer peels off as the cover tape is peeled off, and the carrier tape becomes unusable. Summary of the invention

[0007] Problems to be solved by the invention

[0008] An object of the present invention is to provide an electronic component conveyor tape and an electronic component conveyor reel in which adhesion of fibers on the surface of a carrier tape to a cover tape is reduced.

[0009] Technical solutions to solve problems

[0010] In order to solve the above-mentioned problems, the present invention provides an electronic component conveyor belt, comprising: a long carrier tape, on which a plurality of concave storage portions for accommodating electronic components are arranged at equal intervals in the length direction; and a long covering tape, adhered to one surface of the carrier tape in the thickness direction so as to cover the openings of the plurality of storage portions, the carrier tape being made of paper, and the fibers contained in the carrier tape being inclined in the thickness direction relative to the length direction.

[0011] Effects of the Invention

[0012] According to the present invention, it is possible to provide an electronic component conveyor tape and an electronic component conveyor reel in which adhesion of fibers on the surface of a carrier tape to a cover tape is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top view which shows the electronic component conveyor belt 1 which concerns on this embodiment.

[0014] Figure 2 yes Figure 1 The electronic component conveyor belt 1 is shown in a II-II cross-sectional view.

[0015] Figure 3 The figure shows an example of a peeling device 10 which unwinds the electronic component conveyor tape 1 from the reel 9 and peels off the cover tape 3 .

[0016] Figure 4 is a comparison method Figure 3 FIG. 1 is an enlarged view of part P of FIG.

[0017] Figure 5 This is a diagram showing an embodiment of the Figure 3 FIG. 1 is an enlarged view of part P of FIG.

[0018] Description of Reference Numerals

[0019] θT: orientation degree in thickness direction;

[0020] θW: orientation degree in width direction;

[0021] C: electronic components;

[0022] L: length direction;

[0023] T: thickness direction;

[0024] W: width direction;

[0025] f: fiber;

[0026] 1: Electronic components conveyor belt;

[0027] 2: Carrier tape;

[0028] 3: Covering belt;

[0029] 5a: Storage section;

[0030] 5b: feed hole;

[0031] 9: reel;

[0032] 9s: core member;

[0033] 10: stripping device;

[0034] 11: Transmission platform;

[0035] 15: transmission sprocket teeth;

[0036] 15a: teeth;

[0037] 41: Pressure plate. DETAILED DESCRIPTION

[0038] Hereinafter, an electronic component conveyor belt 1 according to an embodiment of the present invention will be described. Figure 1 1 is a plan view showing an electronic component conveyor belt 1 according to the present embodiment. Figure 2 yes Figure 1 The II-II cross-sectional view of the electronic component conveyor belt 1 is shown. Figure 1 as well as Figure 2 As shown, the electronic component conveyor tape 1 includes a carrier tape 2 and a cover tape 3 .

[0039] (Carrier tape 2)

[0040] The carrier tape 2 is a long strip or belt-shaped member and has a plurality of storage portions 5a arranged in a row at regular intervals in the longitudinal direction L and a plurality of feed holes 5b.

[0041] The storage portion 5a is a rectangular recessed portion in the carrier tape 2 that is open on the surface side of the adhesive cover tape 3 in the thickness direction T in a plan view. One electronic component C is stored in one storage portion 5a. Examples of the electronic component C include a multilayer ceramic capacitor. In addition, the size of the recessed portion is 0.665±0.03 mm in the length direction, 0.335±0.03 mm in the width direction, and 0.335±0.03 mm in the depth direction.

[0042] Feed holes 5b are circular through holes that penetrate carrier tape 2. Feed holes 5b are arranged in a row at regular intervals in longitudinal direction L on one side in width direction W of carrier tape 2. Feed holes 5b engage with teeth 15a of a conveying sprocket 15 described later.

[0043] The carrier tape 2 is made of paper and contains a plurality of fibers f. The fibers f will be described later.

[0044] (cover tape 3)

[0045] The cover tape 3 is a strip-shaped or belt-shaped member. The cover tape 3 is made of, for example, a transparent resin, and is a tape having a function of being bonded by heat on one side. The cover tape 3 is bonded to the carrier tape 2 in such a manner that the bonding surface is in close contact with the surface of the carrier tape 2 and covers each storage portion 5a, and does not block the feed hole 5b. Thus, the electronic component C is stored in the state of being sealed in the storage portion 5a. The material of the cover tape 3 is not particularly limited, but generally, a resin is used.

[0046] The electronic component conveyor tape 1 storing a plurality of electronic components C is wound around the core member 9 a of the reel 9 with the surface side to which the cover tape 3 is bonded facing the inner peripheral side, and is conveyed together with the reel 9 .

[0047] Figure 3This is a diagram showing an example of a peeling device 10 that unwinds the electronic component conveyor tape 1 from the reel 9 in which the electronic component conveyor tape 1 is wound around the core member 9a and peels off the cover tape 3.

[0048] When mounting the electronic component C on a substrate or the like, the electronic component conveyor tape 1 is unwound from the reel 9, and the cover tape 3 is peeled off by the peeling device 10. The peeling device 10 includes a conveyor table 11, a conveyor sprocket 15, and a pressing plate 41. The conveyor table 11 holds the reel 9 on which the electronic component conveyor tape 1 is wound at one end, and is provided with a conveyor sprocket 15 at the other end.

[0049] The conveying sprocket 15 has a plurality of teeth 15a on the outer periphery thereof that engage with the feed holes 5b of the carrier tape 2, and is rotationally driven by a motor (not shown).

[0050] The electronic component conveyor tape 1 is conveyed in the conveying direction with the surface side to which the cover tape 3 is bonded facing upward by continuously engaging the feed holes 5b of the plurality of teeth 15a of the rotating conveyor sprocket 15 with the feed holes 5b of the carrier tape 2.

[0051] When the electronic component conveyor tape 1 is unwound from the reel, the cover tape 3 is adhered to the carrier tape 2 and held by the pressing plate 41. Then, at the front end side of the pressing plate 41 in the forward direction, only the cover tape 3 is pulled obliquely upward by a pulling unit (not shown). In this way, the cover tape 3 is peeled off from the carrier tape 2, and only the carrier tape 2 holding the electronic component C is unwound in the forward direction. As a result, the storage portion of the electronic component C is opened, and the electronic component C can be taken out.

[0052] Electronic components are taken out one by one from storage portion 5 a of carrier tape 2 and mounted on a mounting substrate or the like.

[0053] (Thickness Direction Orientation Degree θT)

[0054] The material of the carrier tape 2 of the embodiment is paper, and is an aggregate of a plurality of fibers f.

[0055] Here, when the angle along the longitudinal direction L is set to 0° in a plan view from a plane passing through the thickness direction T and the longitudinal direction L of the carrier tape 2 , the inclination of the fibers f in the thickness direction T is referred to as the thickness direction orientation degree θT.

[0056] The fibers f in the carrier tape 2 include many fibers f inclined at a thickness direction orientation degree θT less than 90°. The fibers f are inclined in a direction where the rear end side in the extraction direction M of the electronic component conveyor 1 approaches the cover tape 3 side of the carrier tape 2.

[0057] Specifically, from Figure 2In the top view observed in the direction shown in , the fibers f having a thickness direction orientation degree θT of 20° to 70° account for more than 70% of the total. Figure 2 In the plan view shown in , the average of the thickness direction orientation degree θT of the entire fiber f is 0° to 45°.

[0058] The thickness direction orientation degree θT of the fiber f can be measured, for example, by the following method: Figure 2 The carrier tape 2 is CT scanned on the plane side passing through the thickness direction T and the length direction L as shown in FIG. 1 to obtain a CT image, and the thickness direction orientation degree of the fiber f extracted from the CT image is measured.

[0059] In addition, the thickness direction orientation degree θT can also be expressed by the ratio (T0 / L0) of the length T0 of the fiber f projected in the thickness direction T to the length L0 projected in the length direction L. It becomes tanθ=T0 / L0. In addition, it is not necessary to make all the fibers face the same direction, and it is preferred that more than 70% of the photographed fibers are included in the above angle.

[0060] Figure 4 is a comparison method Figure 3 FIG. 1 is an enlarged view of the P portion of FIG. In the comparative embodiment, the same reference numerals as those in the embodiment are used.

[0061] The electronic component conveyor tape 1 of the comparative embodiment is different from the embodiment in that the fibers f included in the carrier tape 2 include a large number of fibers f parallel to the longitudinal direction L.

[0062] In the comparative embodiment, when the cover tape 3 is peeled off from the carrier tape 2, the fibers f are pulled in a direction substantially perpendicular to the direction in which the fibers themselves extend due to the adhesive force of the cover tape 3.

[0063] The paper is easily peeled off in a direction perpendicular to the direction in which the fibers f extend, so there is a high possibility that the fibers f on the surface of the carrier tape 2 adhere to the surface of the cover tape 3 and are peeled off. In this way, depending on the situation, the carrier tape 2 may be broken or deformed, thereby hindering the removal of the electronic components.

[0064] In contrast, Figure 5 This is a diagram showing an embodiment of the Figure 3 FIG. 1 is an enlarged view of part P of FIG.

[0065] In the electronic component conveyor belt 1 of the embodiment, the fibers f include a plurality of fibers inclined in the thickness direction T relative to the length direction L. These inclined fibers f are inclined at a thickness direction orientation degree θT so that the rear end side in the drawing direction M of the electronic component conveyor belt 1 in the length direction L is close to the cover tape 3 side of the carrier tape 2.

[0066] Therefore, when the cover tape 3 is peeled off from the carrier tape 2, the fibers f are pulled in the direction in which the fibers themselves extend due to the adhesive force of the cover tape 3.

[0067] Since the paper is not easily peeled off in the direction in which the fibers f extend, the possibility that the fibers f on the surface of the carrier tape 2 adhere to the surface of the cover tape 3 and are peeled off is reduced.

[0068] Therefore, it is possible to provide an electronic component conveyor tape and an electronic component conveyor reel in which adhesion of fibers on the surface of the carrier tape 2 to the cover tape is reduced.

[0069] (Degree of orientation in width direction)

[0070] In addition, when viewed from a plane passing through the width direction W and the length direction L of the carrier tape 2, the inclination of the fiber f in the width direction W when the angle along the length direction L is set to 0° is defined as the width direction orientation degree θW. At this time, the fibers f in the carrier tape 2 include many fibers f inclined at a width direction orientation degree θW of less than 90°.

[0071] Specifically, from Figure 1 In the top view observed from the direction shown in , the fibers f having a width direction orientation degree θW of -60° to 60° account for more than 70% of the total. Figure 1 The average of the width-direction orientation degree θW of the entire fiber f is -45° to 45° in a plan view observed in the direction shown in .

[0072] As described above, in the embodiment, the fibers f include a plurality of fibers f that are inclined toward the width direction W relative to the length direction L when viewed from a plane passing through the width direction W and the length direction L of the carrier tape 2. Thus, when the cover tape 3 is peeled off from the carrier tape 2, the force applied to the fibers f when pulling off is inclined relative to the direction in which the fibers f extend, and thus the amount of the fibers f peeled off by the adhesive force of the cover tape 3 can be reduced.

Claims

1. An electronic component conveyor belt comprising: The long carrier tape has a plurality of concave storage portions for accommodating electronic components arranged at equal intervals in the length direction; and A long cover tape is adhered to one surface of the carrier tape in the thickness direction so as to cover the openings of the plurality of storage portions. The carrier tape is made of paper, and the fibers contained in the carrier tape are inclined in the thickness direction relative to the length direction. In a top view observed from a plane passing through the thickness direction and the length direction, Fibers having a thickness direction orientation degree of 20° to 70°, which is an inclination in the thickness direction relative to the longitudinal direction, account for 70% or more of the entire fibers.

2. The electronic component conveyor belt according to claim 1, wherein: When viewed from a plan view passing through the length direction and the thickness direction, The average of the thickness direction orientation degree of the entire fiber is 0° to 45°, and the thickness direction orientation degree is an inclination in the thickness direction relative to the longitudinal direction.

3. The electronic component conveyor belt according to claim 1, wherein: When viewed from a plan view passing through the length direction and the width direction, Fibers having a width direction orientation degree of -60° to 60°, which is an inclination in the width direction relative to the longitudinal direction, account for 70% or more of the entire fibers.

4. The electronic component conveyor belt according to claim 1, wherein: When viewed from a plan view passing through the length direction and the width direction, The average width direction orientation degree of the entire fiber is -45° to 45°, and the width direction orientation degree is an inclination toward the width direction relative to the length direction.

5. The electronic component conveyor belt according to claim 1, wherein: The dimensions of the storage portion are 0.665±0.03 mm in the length direction, 0.335±0.03 mm in the width direction, and 0.335±0.03 mm in the depth direction.

6. An electronic component conveying reel, comprising: a core member; and The electronic component conveyor tape according to any one of claims 1 to 5, wound around the core member, The cover tape side of the fiber in the thickness direction is inclined toward a side opposite to a side from which the electronic component conveyor tape is pulled out in the longitudinal direction.

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