Component storage body molding device

Abstract

To correct the curvature distortion occurring in the width direction of a component storage body.SOLUTION: A component storage section molding unit 20 forms a plurality of component storage sections 2 on a paper substrate with side walls having a thickness of 0.2 mm to 0.6 mm in a conveying direction, thereby obtaining a component storage body (carrier tape) 1. The curvature distortion formed in the width direction of a paper substrate 1a is corrected by a curvature distortion correction unit 30.SELECTED DRAWING: Figure 4A

Description

[Technical Field]

[0001] The present disclosure relates to a component storage body molding apparatus that molds a component storage body that stores and supplies chip-type electronic components. [Background technology]

[0002] BACKGROUND ART Component storage bodies (also called carrier tapes) that store and supply chip-type electronic components have been known.

[0003] Such a carrier tape is obtained by pressing a punch against a paper substrate to form a component housing section in which chip-mounted electronic components are housed.

[0004] Currently, there is a demand for shortening the arrangement pitch between component storage sections in a carrier tape as much as possible, thereby increasing the number of electronic components that can be stored in the carrier tape.

[0005] However, when the pitch between the component storage sections is shortened, processing distortion may occur in the carrier tape when the component storage sections are formed. Such processing distortion in the carrier tape results in processing distortion that curves along the width direction of the carrier tape. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 3880799 [Patent Document 2] Patent No. 3920062 Summary of the Invention [Problem to be solved by the invention]

[0007] As described above, shortening the pitch between component storage units causes processing distortion in the width direction of the carrier tape. However, no component storage unit forming device capable of correcting such processing distortion has been developed to date.

[0008] The present disclosure has been made in consideration of these points, and aims to provide a component storage body molding device that can appropriately correct processing distortions that occur in the width direction of the carrier tape. [Means for solving the problem]

[0009] the component storage section forming device includes: a mounting table for placing a paper substrate thereon; a block main body movable in an up-and-down direction on the mounting table; and a punch block extending downward from the block main body, arranged along a transport direction of the paper substrate, and including a plurality of forming punches for forming component storage sections in the paper substrate; a conveying device for conveying the paper substrate in the transport direction along the mounting table; a curvature correction unit provided downstream of the component storage section forming unit in the transport direction for correcting curvature formed in the width direction of the paper substrate; and a control unit for driving and controlling the component storage section forming unit and the conveying device; wherein the component storage section forming unit continuously forms a plurality of component storage sections in the paper substrate along the transport direction via side walls having a thickness of 0.2 mm or more and 0.6 mm or less; and the curvature correction unit includes a lower roller, an upper roller movable in an up-and-down direction relative to the lower roller, and a gap adjustment mechanism for adjusting the gap between the lower roller and the upper roller.

[0010] The present disclosure relates to a component storage body forming device in which the control unit drives and controls the conveying device to convey and stop the paper substrate so that the forming punch in the punch block that is downstream in the conveying direction of the paper substrate is at a position corresponding to the component storage section that has already been formed by another forming punch.

[0011] The present disclosure relates to a component storage body forming device, in which the punch block is provided upstream of the plurality of forming punches in the conveying direction and has a plurality of through punches that pre-form through holes in the paper base material at positions corresponding to the component storage section.

[0012] The present disclosure is a component storage body molding device in which, when the area of ​​the bottom of the component storage section is S1, the area of ​​S1 excluding the area of ​​the through hole is S2, the height of the component storage section is t2, the thickness of the bottom of the component storage section is t2, V1 = S2 × (t1 + t2), V2 = S1 × t2, and the compression ratio ρ = V1 / V2, ρ is 1.2 or more and 1.5 or less.

[0013] The present disclosure relates to a component storage body forming device in which the forming punch has a punch body and a base that supports the punch body, and when viewed in the conveying direction, the length of the punch body is L1, the width of the punch body is W1, the length of the base is L2, and the maximum width of the base is W2, then L2 = (0.3 to 0.6) × L1 and W2 = (1.5 to 2.5) × W1.

[0014] The present disclosure is a component storage body molding device in which the lower roller has a pair of protrusions that protrude upward when viewed from the conveying direction, and the upper roller has a curved lower surface that retracts upward when viewed from the conveying direction. [Effects of the Invention]

[0015] According to the present disclosure, processing distortion occurring in the width direction of a component storage body can be easily, simply, and appropriately corrected. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a diagram showing the overall configuration of a component storage body molding apparatus according to the present disclosure. [Figure 2] FIG. 2 is a side view showing the curvature correction unit as seen from a direction perpendicular to the conveying direction. [Figure 3] FIG. 3 is a front view showing the curvature correction unit as seen from the conveyance direction. [Figure 4A] FIG. 4A is an enlarged view of a main part of the curvature correction unit as seen from the conveyance direction. [Figure 4B] FIG. 4B is a diagram showing the lower roller and the upper roller of the curvature correction unit. [Figure 4C] FIG. 4C is an enlarged view showing the upper roller. [Figure 5] FIG. 5 is a schematic perspective view showing a curvature correction unit. [Figure 6A] FIG. 6A is a side view showing a piercing punch, a scraping punch, and a forming punch of the component storage section forming unit. [Figure 6B] FIG. 6B is a side cross-sectional view showing a round punch and a positioning punch. [Figure 6C] FIG. 6C is an enlarged view showing the penetrating punch and the round punch as viewed from the conveyance direction. [Figure 7A] FIG. 7A is a front view showing the component storage section molding unit as seen from the conveyance direction. [Figure 7B] FIG. 7B is an enlarged view of the forming punch as seen from the conveyance direction. [Figure 8] FIG. 8 is a diagram showing a carrier tape obtained by the component storage body molding apparatus according to the present disclosure. [Figure 9] FIG. 9 is a diagram showing the operation of forming a component storage section in the paper substrate 1a by the component storage section forming unit. [Figure 10A] FIG. 10A is a diagram showing the action of forming through holes in a paper substrate. [Figure 10B] FIG. 10B is a diagram showing the action of forming a component storage portion at a position corresponding to the through-hole of the paper base material. [Figure 10C] FIG. 10C shows a component storage section molded in a paper substrate. [Figure 11A] FIG. 11A is a diagram showing the action of forming a component storage section in a paper base material in the first modification of the present disclosure. [Figure 11B] FIG. 11B is a diagram showing the action of forming a component storage section in a paper base material in the second modification of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0017] <Present Embodiment> Hereinafter, an embodiment of a component storage body molding device according to the present disclosure will be described with reference to the drawings.

[0018] 1 to 10C are diagrams showing an embodiment of a component housing molding device according to the present disclosure.

[0019] The component storage body molding device 100 according to the present disclosure uses a paper substrate 1a to mold a component storage section 2 that stores chip-type electronic components (not shown) into the paper substrate 1a, thereby molding a component storage body (hereinafter also referred to as carrier tape) 1 (see Figure 8).

[0020] First, an overview of the component storage body (carrier tape) will be described with reference to Fig. 8. As shown in Fig. 8, the carrier tape 1 has a plurality of component storage sections 2 formed continuously along the conveying direction D. The carrier tape 1 also has formed therein feed holes 5 used to convey the paper substrate 1a.

[0021] Next, an overview of the component storage unit forming apparatus 100 will be described with reference to Fig. 1. As shown in Fig. 1, the component storage unit forming apparatus 100 includes a component storage section forming unit 20 that forms component storage sections 2 in a paper substrate 1a to form a carrier tape 1, and a curvature correction unit 30 that is provided downstream in the conveyance direction D of the component storage section forming unit 20 and corrects curvature formed along the width direction W (see Fig. 8) of the paper substrate 1a when the component storage sections 2 are formed in the component storage section forming unit 20.

[0022] The component storage section molding unit 20 is disposed on a frame 18, and the frame 18 is supported on a floor surface F via a stand 19. A drive sprocket (conveyor device) 51 is provided downstream of the component storage section molding unit 20 in the conveying direction D. The drive sprocket (conveyor device) 51 is supported by the frame 18 and engages with the feed holes 5 of the paper base material 1a to convey the paper base material 1a.

[0023] The component storage section molding unit 20 and the driving sprocket 51 are both connected to a control section 60 and are controlled by the control section 60 .

[0024] Next, the component storage unit forming unit 20 will be described with reference to FIGS. 6A to 6C and 7A to 7B. Here, FIG. 6A is a side view showing the penetrating punch, the scraping punch, and the forming punch of the component storage unit forming unit. FIG. 6B is a side cross-sectional view showing the round punch and the positioning punch. FIG. 6 is an enlarged view of the penetrating punch and the round punch as viewed from the conveyance direction. FIG. 7A is a front view of the component storage unit forming unit as viewed from the conveyance direction. FIG. 7B is an enlarged view of the forming punch as viewed from the conveyance direction. As shown in FIGS. 6A to 6C and 7A to 7B, the component storage unit forming unit 20 includes a mounting table 21 on which the paper substrate 1a to be conveyed is placed, and a punch block 24 mounted on the mounting table 21 and movable vertically. The punch block 24 includes a block body 24a that is movable vertically, and a plurality of penetrating punches 12, a plurality of scraping punches 62, and a plurality of forming punches 22 mounted on the block body 24a. That is, as shown in FIG. 6A, the block body 24a of the punch block 24 is provided with a plurality of downwardly protruding penetrating punches 12, a plurality of scrap punches 62, and a plurality of forming punches 22, arranged in this order from the upstream side to the downstream side along the conveying direction of the paper substrate 1a.

[0025] As shown in FIG. 6B, the block body 24a of the punch block 24 is provided with a plurality of downwardly protruding circular punches 13 and a plurality of positioning punches 23, in this order from upstream to downstream along the conveyance direction of the paper substrate 1a. In this embodiment, the plurality of penetrating punches 12, the plurality of scrap-removing punches 62, and the plurality of shaping punches 22 provided on the block body 24a are arranged to extend parallel to the plurality of circular punches 13 and the plurality of positioning punches 23 along the conveyance direction of the paper substrate 1a. The mounting table 21 is also provided with an opening 12a through which the penetrating punch 12 enters and an opening 62a through which the scrap-removing punch 62 enters (see FIG. 6A). The mounting table 21 is also provided with an opening 13a through which the circular punch 13 enters and an opening 23a through which the positioning punch 23 enters (see FIG. 6B).

[0026] Thus, the punch block 24 has a block body 24a that is movable in the vertical direction, and a plurality of penetrating punches 12 that extend downward from the block body 24a and are arranged along the conveyance direction of the paper substrate 1a. In addition, a round punch 13 is provided adjacent to the penetrating punch 12 on the underside of the block body 24a.

[0027] In the component storage section forming unit 10, the through punch 12 of the punch block 24 pre-forms a through hole 3 in the paper substrate 1a at a position corresponding to the component storage section 2. The circular punch 13 penetrates the paper substrate 1a to form a feed hole 5. As shown in FIG. 6C , the mounting table 21 is formed with an opening 12a through which the through punch 12 enters and an opening 13a through which the circular punch 13 enters. As shown in FIG. 6A , of the multiple forming punches 22 provided in the block body 24a, the forming punch 22A located at the most downstream position in the conveyance direction of the paper substrate 1a has a shorter vertical length than the other forming punches 22. The forming punch 22A located at the most downstream position in the conveyance direction of the paper substrate 1a also has a smaller external dimension when viewed from the side than the other forming punches 22. In this embodiment, the forming punch 22A located at the most downstream position in the conveyance direction of the paper substrate 1a has a shorter vertical length than the other forming punches 22. Furthermore, the outer dimensions of the forming punch 22A located most downstream in the conveyance direction of the paper base material 1a, as viewed from the side, are smaller than those of the other forming punches 22. Therefore, when forming the component storage sections 2 in the paper base material 1a with the forming punches 22, the most downstream forming punch 22A smoothly enters the already formed component storage sections 2, preventing deformation or distortion of the side walls 2a between the component storage sections 2. The function of this most downstream forming punch 22A will be described later.

[0028] In this embodiment, "upper," "lower," "upper surface," and "lower surface" refer to "upper," "lower," "upper surface," and "lower surface" when the component storage body molding apparatus 100 according to the present disclosure is installed as shown in Figure 1.

[0029] Next, the component storage section forming unit 20 will be further described with reference to FIGS. 7A and 7B. Here, FIG. 7A is a front view of the component storage section forming unit as viewed from the conveyance direction, and FIG. 7B is an enlarged view of the forming punch as viewed from the conveyance direction. As described above, the component storage section forming unit 20 includes a mounting table 21 on which the conveyed paper substrate 1a is placed, and a punch block 24 mounted on the mounting table 21 and movable vertically (see FIGS. 7A and 7B). The punch block 24 includes a block body 24a that is movable vertically, and a plurality of penetrating punches 12, a plurality of scrap punches 62, and a plurality of forming punches 22 extending downward from the block body 24a and arranged along the conveyance direction D of the paper substrate 1a (see FIG. 6A). Additionally, a plurality of round punches 13 and a plurality of positioning punches 23 are provided adjacent to the penetrating punches 12, the scrap punches 62, and the plurality of forming punches 22 on the underside of the block body 24a (see FIG. 6B).

[0030] In the component storage section forming unit 20, the forming punch 22 of the punch block 24 presses against a through hole 3 formed in advance in the paper base material 1a, forming the component storage section 2 at a position corresponding to the through hole 3. When the component storage section 2 is formed by the forming punch 22, the positioning punch 23 enters a feed hole 5 formed in the paper base material 1a to position the paper base material 1a.

[0031] As shown in FIG. 7A, the mounting table 21 is formed with an opening 22a through which the forming punch 22 enters and an opening 23a through which the positioning punch 23 enters.

[0032] Next, the forming punch 22 of the component storage section forming unit 20 will be described in detail with reference to FIG. 7B. As described above, the component storage section forming unit 20 has a punch block 24 that is movable in the vertical direction. This punch block 24 includes a block body 24a and a plurality of forming punches 22 that extend downward from the block body and are arranged along the conveyance direction D (see FIG. 10B). Each forming punch 22, as viewed from the conveyance direction of the paper substrate 1a, has a punch body 22d that forms the component storage section 2 and a support body 22c that supports the punch body 22d via a base 22b (see FIG. 7B). In this embodiment, when the vertical length of the punch body 22d is L1, the vertical length of the base 22b is L2, the width of the punch body 22d in the width direction W of the paper substrate 1a ... punch block 24, the vertical length of the punch body 22d is L1, the vertical length of the base 22b is L2, the vertical length of the punch body 22d is W1, and the maximum width of the base 22b in the width direction W of the paper substrate 1a in the width direction W of the paper substrate 1a in the width direction W of the paper substrate 1a in the width direction W of the paper substrate 1a in the punch block 24 includes L2 = (0.3~0.6) × L1. Also, W2 = (1.5~2.5) × W1.

[0033] By specifying the vertical length L1 of the punch body 22d of the forming punch 22, the vertical length L2 of the base 22b, the width W1 of the punch body 22d, and the maximum width W2 of the base 22b in this manner, it is not necessary to make the base 22b between the punch body 22d and the support body 22c excessively long, and the strength of the forming punch 22 as a whole can be maintained.

[0034] Next, referring to Figures 1 to 5, the curvature correction unit 30, which corrects curvature formed in the width direction of the paper substrate 1a when the component storage section 2 is formed on the paper substrate 1a by the component storage section forming unit 20, will be described. Here, Figure 1 shows the overall configuration of the component storage body forming apparatus 100, Figure 2 is a side view of the curvature correction unit seen from a direction perpendicular to the conveyance direction, Figure 3 is a front view of the curvature correction unit seen from the conveyance direction, Figure 4A is an enlarged view of the main parts of the curvature correction unit seen from the conveyance direction, Figure 4B is a view showing the lower roller and upper roller of the curvature correction unit, Figure 4C is an enlarged view of the upper roller, and Figure 5 is a schematic perspective view of the curvature correction unit. As shown in Figure 1, the curvature correction unit 30 is provided downstream of the component storage section forming unit 20. That is, the curvature correction unit 30 is attached to a frame 28 disposed on a floor surface F via a stand 29. The frame 28 is provided with a take-up reel 71 that winds up the carrier tape 1 made of the paper substrate 1a whose curvature has been corrected by the curvature correction unit 30. Between the curvature correction unit 30 and the take-up reel 71, guide reels 72 and 73 are provided that guide the carrier tape 1 whose curvature has been corrected by the curvature correction unit 30 toward the take-up reel 71.

[0035] As shown in FIGS. 1 to 5, the curvature correction unit 30 has two pairs of rollers 31, 32 and 31, 32, and each pair of rollers 31, 32 and 31, 32 is composed of a lower roller 31 and an upper roller 32 (see FIG. 5).

[0036] In this embodiment, the curvature distortion correction unit 30 has two pairs of lower rollers 31 and upper rollers 32, and these two pairs of lower rollers 31 and upper rollers 32 are respectively installed on the upstream and downstream sides along the conveying direction D of the carrier tape 1 formed from a paper base material 1a.

[0037] However, the present invention is not limited to this, and the curvature correction unit 30 may be composed of a pair of a lower roller 31 and an upper roller 32 .

[0038] Next, the curvature correction unit 30 will be further described with reference to Figures 2 to 4B. As shown in Figures 2 to 4B, each of the two lower rollers 31 of the curvature correction unit 30 is rotatably mounted on a support 38 attached to the frame 28 via a rotation shaft 33. Two oscillating plates 36 that oscillate relative to the support 38 via an oscillation shaft 37 are attached to the support 38 above the two lower rollers 31, and each upper roller 32 is mounted on each oscillating plate 36 via a rotation shaft 34 (see Figure 2).

[0039] In this embodiment, the carrier tape 1 is sandwiched between the lower roller 31 and the upper roller 32, and the carrier tape 1 is conveyed between the lower roller 31 and the upper roller 32, so that the lower roller 31 and the upper roller 32 rotate along with the carrier tape 1. In this case, the opening of the component storage section 2 of the carrier tape 1 faces upward.

[0040] As shown in FIG. 2, the support 38 is provided with a gap adjustment mechanism 40 that adjusts the gap between the lower roller 31 and the upper roller 32.

[0041] That is, a swing shaft 37 provided on the swing plate 36 is disposed on one side of the swing plate 36, and the swing plate 36 is attached to a support 38 via the swing shaft 37. The other side of the swing plate 36 is pressed downward by a gap adjustment mechanism 40. In this embodiment, the other side of the swing plate 36 is urged upward by a spring 38a built into the support 38. As a result, the gap adjustment mechanism 40 presses the other side of the swing plate 36 downward, and the spring 38a urges the other side of the swing plate 36 upward. This causes the upper roller 32 attached to the swing plate 36 via the rotation shaft 34 to move up and down. This makes it possible to adjust the gap between the lower roller 31 and the upper roller 32 attached to the support 38 via the rotation shaft 33.

[0042] Specifically, the gap adjustment mechanism 40 has a gap adjustment mechanism main body 40a, a protrusion 40b that protrudes from below the gap adjustment mechanism main body 40a, and a dial 40c that moves the protrusion up and down relative to the gap adjustment mechanism main body 40a. By rotating the dial 40c, the amount of protrusion of the protrusion 40b relative to the gap adjustment mechanism main body 40a can be adjusted.

[0043] The protrusion 40b of the gap adjustment mechanism 40 is connected to the other side of the rocking plate 36, and by adjusting the protrusion amount of the protrusion 40b, the other side of the rocking plate 36 is pressed downward. Meanwhile, the other side of the rocking plate 36 is urged upward by the spring 39a. This causes the upper roller 32, which is attached to the rocking plate 36 via the rotation shaft 34, to move up and down, thereby adjusting the gap between the lower roller 31 and the upper roller 32. Note that in this embodiment, an example has been shown in which the lower roller 31 is fixed and the upper roller 32 is moved up and down, but this is not limiting, and the upper roller 32 may be fixed and the lower roller 31 may be moved up and down.

[0044] 4A to 4C, the lower roller 31 of the curvature correction unit 30 has a pair of protrusions 41, 41 that protrude upward when viewed from the transport direction of the carrier tape 1. The upper roller 32 has a curved lower surface 42 that recedes upward when viewed from the transport direction of the carrier tape 1.

[0045] When the component storage section 2 is formed in the paper substrate 1a in the component storage section forming unit 20, which is a process preceding the curvature correction unit 30, a curvature is formed in the width direction of the paper substrate 1a. In this case, by clamping the paper substrate 1a between the lower roller 31 and the upper roller 32 of the curvature correction unit 30, the curvature of the paper substrate 1a can be corrected between the lower roller 31 and the upper roller 32.

[0046] Specifically, the lower surface of the paper substrate 1 a is pressed down by a pair of protrusions 41 , 41 of the lower roller 31 , and the upper surface of the paper substrate 1 a is pressed down by the lower surface 42 of the upper roller 32 .

[0047] As a result, the curvature of the paper substrate 1 a is corrected between the lower roller 31 and the upper roller 32 .

[0048] In this embodiment, as shown in Figures 4A, 4B, 4C and 8, the center line C2 at the center of the width direction extending in the vertical direction of the lower roller 31 and the upper roller 32 corresponds to (intersects with) the center line C1 at the center of the width direction extending in the conveying direction D of the paper substrate 1a.

[0049] However, the component storage section 2 formed in the paper base material 1a is positioned offset from the center line C1 of the paper base material 1a (see FIG. 8). Therefore, the curvature distortion formed along the width direction W of the paper base material 1a is centered around the component storage section 2. In this embodiment, taking into consideration that the curvature distortion along the width direction W of the paper base material 1a is centered around the component storage section 2, the center C3 of the pair of protrusions 41, 41 of the lower roller 31 is positioned corresponding to the component storage section 2. The curved lower surface 42 of the upper roller 32 has an arcuate surface 42a extending in the width direction centered at a position corresponding to the component storage section 2, and an extension surface 42b extending linearly from the arcuate surface 42a toward the feed hole 5 (see FIGS. 4B and 4C).

[0050] The center C3 of the arcuate surface 42a of the lower surface 42 is located at a position corresponding to the component storage section 2, and the arcuate surface 42a extends symmetrically from this center C3 to both sides in the width direction, and uniformly presses the paper substrate 1a with the component storage section 2 as the center between the pair of protrusions 41, 41 of the lower roller 31.

[0051] In this embodiment, the distance g between the pair of protrusions 41, 41 of the lower roller 31 and the arcuate surface 42a of the upper roller 32 is the same for both rollers. As a result, in the component storage section forming unit 20, any curvature distortion formed on the paper substrate 1a that protrudes downward along the width direction is corrected by uniformly clamping the paper substrate 1a between the pair of protrusions 41, 41 of the lower roller 31 and the arcuate surface 42a of the upper roller 32 so that the paper substrate 1a protrudes upward along the width direction. This makes it possible to reliably correct any curvature distortion that protrudes downward on the paper substrate 1a between the pair of protrusions 41, 41 of the lower roller 31 and the arcuate surface 42a of the upper roller 32.

[0052] Next, the operation of this embodiment having such a configuration will be described.

[0053] First, a reel 70 is prepared around which a paper substrate 1a having a thickness of, for example, 0.61 mm is wound, as shown in Fig. 1. The reel 70 is placed inside the frame 18 of the component storage section molding unit 20, and the paper substrate 1a is unwound from the reel 70 and sent to the component storage section molding unit 20 side.

[0054] Next, in the component storage section molding unit 20, the paper base material 1a is placed on the mounting table 21, and the punch block 24 of the component storage section molding unit 20 is lowered. At this time, the paper base material 1a is processed by the penetrating punch 12 provided on the block body 24a.

[0055] In this case, as shown in Figure 10A, the paper substrate 1a is opened in its thickness direction by a penetrating punch 12 to form a through hole 3. At this time, the planar shape of the through hole 3 is rectangular. At the same time as forming the through hole 3, a feed hole 5 is formed in the thickness direction of the paper substrate 1a at a desired position in the paper substrate 1a by a round punch 13. Next, the paper substrate 1a is fed to the scrap punch 62 side, and the scrap inside the through hole 3 formed in the paper substrate 1a by the penetrating punch 12 is removed downward by this scrap punch 62.

[0056] Next, the operation of the forming punch 22 of the component storage section forming unit 20 will be described with reference to Figures 7A and 7B. In the forming punch 22 of the component storage section forming unit 20, when the paper substrate 1a is fed onto the mounting table 21 as shown in Figure 7A, the punch block 24 descends toward the paper substrate 1a. At this time, the forming punch 22 is pressed against the through hole 3 of the paper substrate 1a, forming the component storage section 2 over the through hole 3 of the paper substrate 1a, and the through hole 3 is closed by a portion of the paper substrate 1a stretched by the forming punch 22. That is, unlike incompressible materials such as plastic materials, the paper substrate 1a is made of a compressible material. Therefore, when pressed between the mounting table 21 and the forming punch 22 pressed against the through hole 3, the paper substrate 1a is easily compressed and simultaneously stretched from the periphery toward the center of the through hole 3 to conform to the planar shape of the through hole 3. In this case, since the through hole 3 has a rectangular shape in plan view, the paper base material 1a is extended toward the center from the four sides of the through hole 3 and butts together, closing the through hole 3 while forming a planar X-shaped seam.

[0057] In this way, by forming through holes 3 in advance in the paper base material 1a and then pressing a forming punch 22 against the through holes 3 to fill the bottoms of the through holes 3, it is possible to reliably form multiple component storage sections 2 with a short arrangement pitch in the paper base material 1a (see Figure 10B).

[0058] When forming the component storage section 2 in the paper base material 1a using the forming punch 22, a positioning punch 23 is inserted into the feed hole 5 of the paper base material 1a to position the paper base material 1a. This allows the component storage section 2 to be formed with high precision using the forming punch 22. The forming punch 22 is rod-shaped and has a flat surface at the tip of the punch body 22d that is perpendicular to the rod axis. Because of this shape, the paper base material 1a can be processed with high precision to form the component storage section 2. The planar shape of the component storage section 2 is square or rectangular to match the chip-type electronic components.

[0059] Next, the action of forming the component storage section 2 in the paper base material 1a will be further explained with reference to Figure 9. Let t1 be the depth of the component storage section 2 in the thickness direction of the paper base material 1a, t2 be the thickness of the bottom of the component storage section within the thickness of the paper base material 1a, S1 be the area of ​​the component storage section 2 in a plan view (planar shape area), and S2 be the area of ​​S1 excluding the area S3 of the through-hole 3 in a plan view. V1 is defined as V1 = S2(t1 + t2), and V2 is defined as V2 = S1 × t2. Furthermore, when the compression ratio ρ is defined as ρ = V1 / V2, it is preferable that ρ is 1.2 or more and 1.5 or less (see Figure 9).

[0060] In this case, by setting ρ to 1.2 or more, there is no need to excessively increase the area S3 of the through holes 3. Furthermore, by setting ρ to 1.5 or less, the component storage sections 2 with a short arrangement pitch P1 can be reliably formed without significantly compressing the paper base material 1a with the forming punch 22. In this way, a carrier tape 1 is obtained in which the component storage sections 2 are formed in the paper base material 1a (see FIG. 10C).

[0061] According to this embodiment, after opening a through hole 3 in the paper base material 1a with an area smaller than that of the component storage section 2, the component storage section 2 having an opening of a desired shape above the through hole 3 is formed by pressing using a forming punch 22, so that the pressing force on the paper base material 1a caused by the press working when forming the component storage section 2 can be released toward the through hole 3. Therefore, when forming the component storage section 2 by pressing, the side wall 2a of the component storage section 2 that was previously opened is not excessively pressed, and the shape of the previously formed side wall of the component storage section 2 is not deformed.

[0062] The shape of the through hole 3 is determined by whether or not a seam will be formed at the bottom of the component storage section 2. For example, if the planar shape of the through hole 3 is circular, the opening of the through hole 3 on the bottom side of the component storage section 2 can be closed during press working to form the component storage section 2, but no seam will be formed, making the component storage section 2 more rigid. For this reason, the planar shape of the through hole 3, like that of the component storage section 2, is preferably a polygonal shape such as a rectangle.

[0063] Furthermore, since the through holes 3 are formed by the multiple round punches 13 and the feed holes 5 are opened at the same time, the relative positions of the through holes 3 and the feed holes 5 can be determined with high precision. Therefore, in the component storage section forming unit 20, the component storage section 2 can be formed on the through holes 3 by inserting the positioning punches 23 into the feed holes 5 and using the feed holes 5 as references, and the relative positions of the component storage sections 2 and the through holes 3 can also be determined with high precision.

[0064] Furthermore, when the component storage section 2 is formed in the component storage section forming unit 20, a portion of the paper substrate 1a pressed by the press process completely closes the opening of the through-hole 3, so that the bottom of the component storage section 2 does not have a hole. At this time, the entire bottom area of ​​the component storage section 2 is compressed by the press process between the mounting table 21 and the forming punch 22, so the component storage section 2 has sufficient strength to store and support chip-type electronic components. In this case, because the raw material of the paper substrate 1a is fibrous, the component storage section 2 does not fuse together like a plastic carrier tape, even when pressed by the press process.

[0065] In the present embodiment, in the component storage section forming unit 20, the forming punch 22A of the punch block 24 located at the most downstream position in the conveyance direction of the paper base material 1a arrives at a position corresponding to a component storage section 2 already formed by another forming punch 22, and the paper base material 1a stops. The punch block 24 then descends, and the forming punch 22A located at the most downstream position fits into the already formed component storage section 2, and the other forming punch 22 presses against the pre-formed through hole 3 in the paper base material 1a, thereby forming the component storage section 2 over the through hole 3 in the paper base material 1a as described above. By inserting the most downstream forming punch 22A into the already formed component storage section 2 in this way, the forming punch 22A presses against the side wall 2a between the component storage sections 2, preventing deformation and distortion of the side wall 2a.

[0066] Hereinafter, the operation of inserting the forming punch 22 located at the most downstream position into the already formed component storage portion 2 will be described in detail with reference to FIGS. 7A and 10B.

[0067] First, the drive sprocket 51 of the component storage section molding unit 20 is fitted into the feed hole 5 of the paper substrate 1a, and the paper substrate 1a on the mounting table 21 is moved in the conveying direction D.

[0068] Next, the paper substrate 1a stops on the mounting table 21, and the punch block 24 descends and is pressed against the paper substrate 1a. In this case, each of the forming punches 22A, 22B, 22C, 22D, ... of the punch block 24 presses against the paper substrate 1a to form the component storage section 2.

[0069] Next, the paper substrate 1a is fed in the conveying direction D of the paper substrate 1a by the driving sprocket 51 controlled by the control unit 60. In this case, the control unit 60 controls the driving sprocket 51 to determine the feed amount of the paper substrate 1a so that the downstream-most forming punch 22A of the punch block 24 is positioned at a position corresponding to the component storage section 2 already formed by another forming punch 22.

[0070] Next, the punch block 24 descends. The forming punches 22A, 22B, 22C, 22D, etc. of the forming punch 22 descend and press against the paper substrate 1a. At this time, the downstream-most forming punch 22A of the punch block 24 fits into the already formed component storage section 2, while the other forming punches 22B, 22C, 22D, etc. are each pressed against corresponding positions on the paper substrate 1a to form a new component storage section 2. As described above, of the forming punches 22 of the punch block 24, the downstream-most forming punch 22A has a shorter vertical length than the other forming punches 22. Furthermore, the downstream-most forming punch 22A in the conveyance direction of the paper substrate 1a also has smaller external dimensions when viewed from the side than the other forming punches 22. This allows the downstream-most forming punch 22A to smoothly enter the already formed component storage section 2. By inserting the forming punch 22A located at the most downstream position into the already formed component storage section 2 in this manner, the side walls 2a between the component storage sections 2 can be pressed by the forming punch 22A, thereby preventing deformation and distortion of the side walls 2a.

[0071] In this way, a plurality of component storage sections 2 are formed in the paper base material 1a in the component storage section forming unit 20 to obtain the carrier tape 1. In particular, by repeating this process, a plurality of component storage sections 2 are continuously formed in the paper base material 1a (see FIG. 10C).

[0072] In this way, the dimension of the shape of each component storage section 2 formed in the paper base material 1a in the conveying direction D is P2. The thickness of the sidewalls 2a between each component storage section 2 is P3. Therefore, the dimension P1 of one pitch of the component storage section 2, which is composed of the dimension P2 of the component storage section 2 in the conveying direction and the thickness P3 of the sidewalls 2a between each component storage section 2, is P1 = P2 + P3. Furthermore, because the component storage sections 2 are formed by pressing the forming punches 22A, 22B, 22C, 22D, etc. against the paper base material 1a, the longitudinal dimension P1 of the component storage section 2 and the dimension of each forming punch 22A, 22B, 22C, 22D in the conveying direction are the same. Therefore, the dimension P1 of one pitch of the component storage section 2 is the same as the arrangement pitch of the forming punches 22A, 22B, 22C, 22D, etc.

[0073] As described above, when forming the above-mentioned component storage section 2, the forming punch 22A located at the most downstream of the punch block 24 is positioned at a position corresponding to the component storage section 2 formed by the other forming punch, so that when the punch block 24 is pressed against the paper substrate 1a, the forming punch 22A fits into the component storage section 2 formed by the other forming punch (see Figure 10B).

[0074] Therefore, the forming punch 22A on the most downstream side only fits into the already formed component storage section 2, and does not form a new component storage section 2 in the paper base material 1a or press against the paper base material 1a. On the other hand, the forming punches 22B, 22C, 22D, etc. other than the forming punch 22A press against the paper base material 1a to form a new component storage section 2.

[0075] Therefore, the side wall 2a interposed between the component storage section 2 into which the forming punch 22A fits and the component storage section 2 newly formed by the next forming punch 22B is pressed by the forming punch 22B, but is sandwiched between the most downstream forming punch 22A and the next forming punch 22B. Therefore, this side wall 2a is not distorted by the pressure of the next forming punch 22B. Similarly, the side wall 2a interposed between the component storage section 2 newly formed by the forming punch 22B and the component storage section 2 newly formed by the other forming punch 22C is sandwiched between the forming punch 22B and the forming punch 22C, so is not distorted by the pressure of the forming punch 22B or the forming punch 22C.

[0076] In this way, all of the side walls 2a adjacent to each of the component storage sections 2, 2 newly formed by the forming punches 22B, 22C, 22D, ... are clamped by the forming punches 22A, 22B, 22C, 22D, ... of the punch block 24, and are therefore not distorted. This allows multiple component storage sections 2 to be formed accurately on the paper base material 1a at a short arrangement pitch P1.

[0077] As described above, according to this embodiment, in the component storage section forming unit 20, the downstream-most forming punch 22A of the punch block 24 is positioned at a position corresponding to a component storage section 2 already formed by another forming punch. When the punch block 24 is pressed against the paper base material 1a, the downstream-most forming punch 22A fits into the component storage section 2 formed by the other forming punch. Therefore, when the forming punches 22B, 22C, 22D, etc. other than the downstream forming punch 22A form a new component storage section 2, the side walls 2a adjacent to each newly formed component storage section 2 are sandwiched between the forming punches 22A, 22B, 22C, 22D, etc. of the punch block 24 and are therefore not distorted. This allows multiple component storage sections 2 to be formed accurately in the paper base material 1a, even if the thickness P3 of the side walls 2a between the component storage sections 2 is reduced, making the side walls 2a formed between the component storage sections 2 more susceptible to distortion. Therefore, a large number of component storage sections 2 can be formed in the paper base material 1a with high precision.

[0078] The number of forming punches 22A, 22B, 22C, 22D, ... included in the punch block 24 is not limited, and may be any number as long as it is plural. Even in such a case, the forming punch 22A located at the most downstream position in the conveyance direction of the paper base material 1a is adapted to fit into the component storage section 2 formed by the other forming punches, as described above.

[0079] Furthermore, the position of the most downstream forming punch 22A of the punch block 24 is not limited to a position corresponding to the most upstream component storage section 2 among the component storage sections 2 already formed by the other forming punches. It may also be a position corresponding to the second or third component storage section 2 counting from the most upstream among the component storage sections 2 already formed. Even in such a case, at least one of the forming punches 22A, 22B, 22C, 22D, ... of the punch block 24 is positioned at a position corresponding to a portion of the paper base material 1a where no component storage section 2 has been formed. When the forming punches 22A, 22B, 22C, 22D, ... are pressed against the paper base material 1a, punches such as the forming punch 22A positioned at a position corresponding to an already formed component storage section 2 fit into the corresponding component storage section 2, and other forming punches positioned at a position corresponding to a portion where no component storage section 2 has been formed are pressed against the paper base material 1a to form a new component storage section 2.

[0080] In this case, the feed amount of the paper substrate 1a by the drive sprocket 51 is determined so that the most upstream forming punch 22A is positioned corresponding to the desired component storage section 2 that has already been formed, and the control unit 60 controls the drive sprocket 51 based on this feed amount of the paper substrate 1a.

[0081] In this way, according to this embodiment, multiple component storage sections 2 with a short arrangement pitch P1 can be precisely formed on the paper base material 1a, and a carrier tape 1 can be obtained by forming multiple component storage sections 2 on the paper base material 1a (see Figure 10C).

[0082] In FIG. 10C, component storage sections 2 formed on carrier tape 1 made of paper base material 1a are arranged at an extremely short arrangement pitch P1, for example, an arrangement pitch P1 of 1 mm.

[0083] Furthermore, if the length of the component storage section 2 in the transport direction is P2 and the thickness of the side wall 2a is P3, the thickness P3 of the side wall 2a can be reduced to, for example, 0.2 mm or more and 0.6 mm or less. In this case, the length P2 of the component storage section 2 is 0.8 mm or less and 0.4 mm or more.

[0084] In this way, the number of component storage sections 2 on the carrier tape 1 can be increased significantly, and the number of electronic components that can be stored on the carrier tape 1 can be increased significantly.

[0085] The carrier tape 1 obtained in this manner can store an increased number of electronic components, but because the arrangement pitch P1 of the component storage sections 2 is short, a curved distortion is formed that protrudes downward from the component storage section 2 along the width direction when viewed from the conveying direction.

[0086] In this embodiment, the carrier tape 1 formed in the component storage section forming unit 20 is sent to the curvature correction unit 30, which corrects any curvature that protrudes downward (see Figures 2 to 5).

[0087] That is, the curvature correction unit 30 has two pairs of lower rollers 31 and upper rollers 32 .

[0088] A curved distortion that protrudes downward along the width direction of the paper base material 1a is formed in the carrier tape 1, but the curved distortion of the carrier tape 1 can be corrected by feeding the carrier tape 1 between two pairs of lower rollers 31 and upper rollers 32 and clamping the carrier tape between the two pairs of lower rollers 31 and upper rollers 32.

[0089] Specifically, the lower surface of the paper substrate 1 a is pressed by a pair of protrusions 41 , 41 of the lower roller 31 , and the upper surface of the paper substrate 1 a is pressed by the upper roller 32 .

[0090] This allows the curvature distortion of the paper substrate 1 a to be corrected between the lower roller 31 and the upper roller 32 .

[0091] The curvature distortion formed along the width direction W of the paper substrate 1a is formed around the component storage section 2. In this embodiment, the center C3 of the pair of protrusions 41, 41 of the lower roller 31 is located at a position corresponding to the component storage section 2. The curved lower surface 42 of the upper roller 32 has an arcuate surface 42a extending in the width direction around a position corresponding to the component storage section 2 as its center, and an extension surface 42b extending from this arcuate surface 42a toward the feed hole 5. Of these, the arcuate surfaces 42a excluding the extension surface 42b extend symmetrically on both sides in the width direction around a position corresponding to the component storage section 2 as its center. The distance g between the pair of protrusions of the lower roller 31 and the arcuate surface 42a of the upper roller 32 is the same for both rollers.

[0092] Therefore, the curvature distortion formed on the paper base material 1a so as to protrude downward along the width direction can be uniformly clamped between the pair of protrusions 41, 41 of the lower roller 31 and the arcuate surface 42a of the upper roller 32 along both sides in the width direction, centered on the component storage section 2, so that the paper base material 1a protrudes upward along the width direction. This makes it possible to reliably correct the curvature distortion that protrudes downward in the width direction of the paper base material 1a.

[0093] The amount of protrusion of the protrusion 40b can be adjusted by rotating the dial 40c of the gap adjustment mechanism 40. In this way, if the curvature distortion occurring in the width direction of the paper substrate 1a is large, the amount of protrusion of the protrusion 40b is increased. This reduces the gap between the lower roller 31 and the upper roller 32, correcting the large curvature distortion of the paper substrate 1a.

[0094] On the other hand, if the curvature distortion occurring in the width direction of the paper substrate 1a is small, the protrusion amount of the protrusion 40b is reduced to increase the gap between the lower roller 31 and the upper roller 32. This corrects the small curvature distortion of the paper substrate 1a.

[0095] In this way, the curvature distortion occurring in the paper base material 1a can be appropriately corrected according to the magnitude of the distortion. The carrier tape 1, in which the curvature distortion occurring in the paper base material 1a has been corrected by the curvature distortion correction unit 30, is then passed through guide reels 72 and 73 and taken up by the take-up reel 71. <Variation 1> Next, a first modification of the present disclosure will be described with reference to FIG. 11A.

[0096] In the above embodiment, the downstream-most forming punch 22A of the punch block 24 fits into the already formed component storage section 2, so a new component storage section 2 is not formed in the paper base material 1a, and the other forming punches 22B, 22C, 22D, ... press against the paper base material 1a to form a new component storage section 2 (see Figure 10B).

[0097] However, this is not limiting, and all of the shaping punches 22A, 22B, 22C, 22D, ... of the punch block 24 may be positioned over the through holes 3 of the paper base material 1a and press against these through holes 3 (see FIG. 11A). This allows all of the shaping punches 22A, 22B, 22C, 22D of the punch block 24 to press against the corresponding through holes 3 of the paper base material 1a, thereby allowing all of the shaping punches 22A, 22B, 22C, 22D to press against the paper base material 1a to form a new component storage section 2. In this case, all of the shaping punches 22A, 22B, 22C, 22D of the punch block 24 have the same length in the up-down direction.

[0098] In this way, according to this embodiment, multiple component storage sections 2 with a short arrangement pitch P1 can be precisely formed on the paper base material 1a, and a carrier tape 1 can be obtained by forming multiple component storage sections 2 on the paper base material 1a (see Figure 11A).

[0099] In FIG. 11A, component storage sections 2 formed on a carrier tape 1 made of a paper base material 1a are arranged at an extremely short arrangement pitch P1, for example, an arrangement pitch P1 of 1 mm.

[0100] Furthermore, if the length of the component storage section 2 in the transport direction is P2 and the thickness of the side wall 2a is P3, the thickness P3 of the side wall 2a can be reduced to, for example, 0.2 mm or more and 0.6 mm or less. In this case, the length P2 of the component storage section 2 is 0.8 mm or less and 0.4 mm or more.

[0101] In this way, the number of component storage sections 2 on the carrier tape 1 can be increased significantly, and the number of electronic components that can be stored on the carrier tape 1 can be increased significantly.

[0102] The carrier tape 1 obtained in this manner can store an increased number of electronic components, but because the arrangement pitch P1 of the component storage sections 2 is short, a curved distortion is formed that protrudes downward from the component storage section 2 along the width direction when viewed from the conveying direction.

[0103] In this embodiment, the carrier tape 1 formed in the component storage section forming unit 20 is sent to the curvature correction unit 30, which corrects any curvature that protrudes downward (see Figures 2 to 5).

[0104] That is, the curvature correction unit 30 has two pairs of lower rollers 31 and upper rollers 32 .

[0105] A curved distortion that protrudes downward along the width direction of the paper base material 1a is formed in the carrier tape 1, but the curved distortion of the carrier tape 1 can be corrected by feeding the carrier tape 1 between two pairs of lower rollers 31 and upper rollers 32 and clamping the carrier tape between the two pairs of lower rollers 31 and upper rollers 32.

[0106] Specifically, the lower surface of the paper substrate 1 a is pressed by a pair of protrusions 41 , 41 of the lower roller 31 , and the upper surface of the paper substrate 1 a is pressed by the upper roller 32 .

[0107] This allows the curvature distortion of the paper substrate 1 a to be corrected between the lower roller 31 and the upper roller 32 .

[0108] The curvature distortion formed along the width direction W of the paper substrate 1a is formed around the component storage section 2. In this embodiment, the center C3 of the pair of protrusions 41, 41 of the lower roller 31 is located at a position corresponding to the component storage section 2. The curved lower surface 42 of the upper roller 32 has an arcuate surface 42a extending in the width direction around a position corresponding to the component storage section 2 as its center, and an extension surface 42b extending from this arcuate surface 42a toward the feed hole 5. Of these, the arcuate surfaces 42a excluding the extension surface 42b extend symmetrically on both sides in the width direction around a position corresponding to the component storage section 2 as its center. The distance g between the pair of protrusions of the lower roller 31 and the arcuate surface 42a of the upper roller 32 is the same for both rollers.

[0109] Therefore, the curvature distortion formed on the paper base material 1a so as to protrude downward along the width direction can be uniformly clamped between the pair of protrusions 41, 41 of the lower roller 31 and the arcuate surface 42a of the upper roller 32 along both sides in the width direction, centered on the component storage section 2, so that the paper base material 1a protrudes upward along the width direction. This makes it possible to reliably correct the curvature distortion that protrudes downward in the width direction of the paper base material 1a.

[0110] The amount of protrusion of the protrusion 40b can be adjusted by rotating the dial 40c of the gap adjustment mechanism 40. In this way, if the curvature distortion occurring in the width direction of the paper substrate 1a is large, the amount of protrusion of the protrusion 40b is increased. This reduces the gap between the lower roller 31 and the upper roller 32, correcting the large curvature distortion of the paper substrate 1a.

[0111] On the other hand, if the curvature distortion occurring in the width direction of the paper substrate 1a is small, the protrusion amount of the protrusion 40b is reduced to increase the gap between the lower roller 31 and the upper roller 32. This corrects the small curvature distortion of the paper substrate 1a.

[0112] In this way, the curvature distortion occurring in the paper base material 1a can be appropriately corrected according to the magnitude of the distortion. The carrier tape 1, in which the curvature distortion occurring in the paper base material 1a has been corrected by the curvature distortion correction unit 30, is then passed through guide reels 72 and 73 and taken up by the take-up reel 71. <Variation 2> Next, a second modification of the present disclosure will be described with reference to FIG. 11B.

[0113] In the above embodiment, an example was shown in which the downstream-most forming punch 22A of the punch block 24 is fitted into an already formed component storage section 2, and the other forming punches 22B, 22C, 22D, ... press against the through holes 3 previously formed in the paper base material 1a to form a new component storage section 2 (see Figure 10B).

[0114] However, the present invention is not limited to this, and the penetrating punch 12 and the scrap punch 62 provided in the component storage section molding unit 20 may be removed.

[0115] In this case, a plain paper substrate 1a without a through hole 3 formed therein is supplied to the forming punch 22 of the component storage section forming unit 20. Then, among the forming punches 22 of the component storage section forming unit 20, the most downstream forming punch 22A fits into the component storage section 2 that has already been formed by another forming punch. As a result, the most downstream forming punch 22A does not form a new component storage section 2 in the paper substrate 1a. In this case, of the forming punches 22 of the punch block 24, the most downstream forming punch 22A has a shorter vertical length than the other forming punches 22. This allows the most downstream forming punch 22A to smoothly enter the component storage section 2 that has already been formed.

[0116] On the other hand, the other forming punches 22B, 22C, 22D, ... press the plain paper base material 1a at the locations where the component storage section 2 is to be formed. This allows the other forming punches 22B, 22C, 22D to press the paper base material 1a and form a new component storage section 2.

[0117] In this way, according to this embodiment, multiple component storage sections 2 with a short arrangement pitch P1 can be precisely formed on the paper base material 1a, and a carrier tape 1 can be obtained by forming multiple component storage sections 2 on the paper base material 1a (see Figure 11B).

[0118] In FIG. 11B, component storage sections 2 formed on a carrier tape 1 made of a paper base material 1a are arranged at an extremely short arrangement pitch P1, for example, an arrangement pitch P1 of 1 mm.

[0119] Furthermore, if the length of the component storage section 2 in the transport direction is P2 and the thickness of the side wall 2a is P3, the thickness P3 of the side wall 2a can be reduced to, for example, 0.2 mm or more and 0.6 mm or less. In this case, the length P2 of the component storage section 2 is 0.8 mm or less and 0.4 mm or more.

[0120] In this way, the number of component storage sections 2 on the carrier tape 1 can be increased significantly, and the number of electronic components that can be stored on the carrier tape 1 can be increased significantly.

[0121] The carrier tape 1 obtained in this manner can store an increased number of electronic components, but because the arrangement pitch P1 of the component storage sections 2 is short, a curved distortion is formed that protrudes downward from the component storage section 2 along the width direction when viewed from the conveying direction.

[0122] In this embodiment, the carrier tape 1 formed in the component storage section forming unit 20 is sent to the curvature correction unit 30, which corrects any curvature that protrudes downward (see Figures 2 to 5).

[0123] That is, the curvature correction unit 30 has two pairs of lower rollers 31 and upper rollers 32 .

[0124] A curved distortion that protrudes downward along the width direction of the paper base material 1a is formed in the carrier tape 1, but the curved distortion of the carrier tape 1 can be corrected by feeding the carrier tape 1 between two pairs of lower rollers 31 and upper rollers 32 and clamping the carrier tape between the two pairs of lower rollers 31 and upper rollers 32.

[0125] Specifically, the lower surface of the paper substrate 1 a is pressed by a pair of protrusions 41 , 41 of the lower roller 31 , and the upper surface of the paper substrate 1 a is pressed by the upper roller 32 .

[0126] This allows the curvature distortion of the paper substrate 1 a to be corrected between the lower roller 31 and the upper roller 32 .

[0127] The curvature distortion formed along the width direction W of the paper substrate 1a is formed around the component storage section 2. In this embodiment, the center C3 of the pair of protrusions 41, 41 of the lower roller 31 is located at a position corresponding to the component storage section 2. The curved lower surface 42 of the upper roller 32 has an arcuate surface 42a extending in the width direction around a position corresponding to the component storage section 2 as its center, and an extension surface 42b extending from this arcuate surface 42a toward the feed hole 5. Of these, the arcuate surfaces 42a excluding the extension surface 42b extend symmetrically on both sides in the width direction around a position corresponding to the component storage section 2 as its center. The distance g between the pair of protrusions of the lower roller 31 and the arcuate surface 42a of the upper roller 32 is the same for both rollers.

[0128] Therefore, the curvature distortion formed on the paper base material 1a so as to protrude downward along the width direction can be uniformly clamped between the pair of protrusions 41, 41 of the lower roller 31 and the arcuate surface 42a of the upper roller 32 along both sides in the width direction, centered on the component storage section 2, so that the paper base material 1a protrudes upward along the width direction. This makes it possible to reliably correct the curvature distortion that protrudes downward in the width direction of the paper base material 1a.

[0129] The amount of protrusion of the protrusion 40b can be adjusted by rotating the dial 40c of the gap adjustment mechanism 40. In this way, if the curvature distortion occurring in the width direction of the paper substrate 1a is large, the amount of protrusion of the protrusion 40b is increased. This reduces the gap between the lower roller 31 and the upper roller 32, correcting the large curvature distortion of the paper substrate 1a.

[0130] On the other hand, if the curvature distortion occurring in the width direction of the paper substrate 1a is small, the protrusion amount of the protrusion 40b is reduced to increase the gap between the lower roller 31 and the upper roller 32. This corrects the small curvature distortion of the paper substrate 1a.

[0131] In this way, the curvature distortion occurring in the paper base material 1a can be appropriately corrected according to the magnitude of the distortion. The carrier tape 1, in which the curvature distortion occurring in the paper base material 1a has been corrected by the curvature distortion correction unit 30, is then passed through guide reels 72 and 73 and taken up by the take-up reel 71. [Explanation of symbols]

[0132] 1 carrier tape 1a Paper substrate 2 Parts storage area 2a side wall 3 Through holes 5 Feed hole 12 Piercing Punch 12a opening 13 Round punch 13a aperture 18 frames 19 Mounting stand 20 Parts storage molding unit 21 Mounting table 22 Forming punch 22a opening 22A, 22B, 22C, 22D Forming punch 22b base 22c support 22d punch body 23 Positioning punch 23a opening 24 Punch Block 24a Block body 28 frames 29 Mounting stand 30 Curvature correction unit 31 Lower roller 33 Rotation axis 32 Upper roller 34 Rotation axis 36 Swing plate 37 Swing axis 38 Support 40 Gap adjustment mechanism 40a Gap adjustment mechanism body 40b Projection 40c dial 41 Protrusion 42 Bottom surface 42a Arc surface 42b Extension surface 51 Drive sprocket 60 Control Unit 62 Dust removal punch 70 reels 71 Take-up reel 72 Guide Reel 72 Guide Reel 100 Parts storage body molding device

Claims

1. a mounting table on which a paper substrate is placed; a component storage section forming unit including: a block body provided on the mounting table so as to be movable in the up-down direction; and a punch block extending downward from the block body, arranged along the conveyance direction of the paper base material, and including a plurality of forming punches for forming a component storage section in the paper base material; a conveying device that conveys the paper substrate along the mounting table in a conveying direction; a curvature correction unit provided downstream of the component storage unit forming unit in the conveying direction and configured to correct curvature formed in the width direction of the paper substrate; a control unit that drives and controls the component storage unit molding unit and the conveying device, the component storage portion forming unit continuously forms a plurality of component storage portions in the paper substrate along a conveyance direction via side walls each having a thickness of 0.2 mm or more and 0.6 mm or less; The curvature distortion correction unit of the component storage body molding device has a lower roller, an upper roller that can move in the vertical direction relative to the lower roller, and a gap adjustment mechanism that adjusts the gap between the lower roller and the upper roller.

2. The control unit controls the drive of the conveying device to convey and stop the paper substrate so that the forming punch of the punch block that is downstream in the conveying direction of the paper substrate is at a position corresponding to the component storage section that has already been formed by another forming punch.

3. 2. The component storage body molding device of claim 1, wherein the punch block is provided upstream of the plurality of forming punches in the conveying direction and has a plurality of through punches that pre-form through holes in the paper substrate at positions corresponding to the component storage section.

4. The area of ​​the bottom of the component storage section is defined as S1, the area of ​​the area S1 excluding the area of ​​the through hole is defined as S2, the height of the component storage section is defined as t1, and the thickness of the bottom of the component storage section is defined as t2, Let V1 = S2 × (t1 + t2), and V2 = S1 × t2, When the compression ratio ρ is set to V1 / V2, 4. The component storage body molding apparatus according to claim 3, wherein ρ is 1.2 or more and 1.5 or less.

5. The forming punch has a punch body and a base that supports the punch body, When viewed from the conveyance direction, the length of the punch body is L1, the width of the punch body is W1, the length of the base is L2, and the maximum width of the base is W2, L2=(0.3~0.6)×L1, 2. The component storage body molding device according to claim 1, wherein W2=(1.5 to 2.5)×W1.

6. The lower roller has a pair of protrusions that protrude upward when viewed from the conveying direction, 2. The component container molding apparatus according to claim 1, wherein said upper roller has a curved lower surface that recesses upward when viewed in the conveying direction.

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