Lead wire cutting device

Abstract

To provide a lead wire cutting device improved in ability of cutting a lead wire.SOLUTION: A cutting blade holding clasp 17 is connected to a link mechanism component 16B through a connection shaft 54. The cutting blade holding clasp 17 performs lifting operation in tandem with rotation motion of the connection shaft 54. A pair of branched regions 150 provided in a cutting blade slide clasp 15 respectively have a pair of guide grooves 15g that guide the cutting blade holding clasp 17 so that the clasp moves in a vertical direction. During execution of a main driving process, the cutting blade holding clasp 17 is descended along the pair of guide grooves 15g, in a state where a posture of the cutting blade holding clasp 17 with respect to a main body part of the link mechanism component 16B is varied by rotating the connection shaft 54, which can achieve a descending-direction regulating function of regulating a cutting blade 18 from descending in the vertical direction.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present disclosure relates to a lead cutting device that cuts a lead wire while gripping it. [Background technology]

[0002] One type of equipment used in fully automated production lines for solar cells, etc., is an ultrasonic bonding device that uses ultrasonic vibrations to bond lead wires (electrode wires) to the electrode film surface of a substrate.The ultrasonic bonding device places the lead wires on each substrate to be bonded, and then performs ultrasonic bonding at the bonding points of the lead wires to bond them to the substrate.

[0003] Typically, the lead wires are pulled out from a lead set unit around which they are wound multiple times and led to the joining point on the circuit board. Therefore, once all of the lead wires on the circuit board have been joined using an ultrasonic joining device, the lead wires must be cut. This requires a lead wire cutting device (lead cutting mechanism) that is specifically designed to cut the lead wires.

[0004] Conventional lead wire cutting devices include, for example, a lead wire cutting device disclosed in Patent Document 1 and an electronic substrate lead cutting device disclosed in Patent Document 2. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-47221 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-85402 Summary of the Invention [Problem to be solved by the invention]

[0006] The conventional electronic substrate lead wire cutting device disclosed in Patent Document 2 is a device dedicated to cutting lead wires, and has the problem of having a large number of parts (including a cylinder for cutting processing) and requiring a large installation space.

[0007] Furthermore, the above-mentioned conventional electronic substrate lead wire cutting device has a problem in that the life cycle cost is relatively high because the cutting blade for cutting is special.

[0008] On the other hand, the conventional lead wire cutting device disclosed in Patent Document 1 aims to solve the above-mentioned problems and cuts the lead wire with a compact device configuration.

[0009] The conventional lead wire cutter disclosed in Patent Document 1 cuts the lead wire with a cutting blade by rotating a cutting blade holder having the cutting blade. For this reason, the conventional lead wire cutter required a relatively long time to adjust the cutting edge position of the cutting blade and the cutting process.

[0010] Furthermore, conventional lead wire cutting devices cut lead wires by rotating the cutting blade, which can result in poor cutting of the lead wires during the cutting process, and has the problem of relatively low cutting ability for lead wires.

[0011] The present disclosure has been made to solve the above problems, and has an object to provide a lead wire cutting device with improved cutting capabilities for lead wires. [Means for solving the problem]

[0012] The lead wire cutting device of the present disclosure comprises a guide mechanism that guides the direction of travel of the lead wire, a cutting blade holding member that is positioned above the lead wire guided by the guide mechanism and has a cutting blade at its tip, and a cutting drive mechanism that drives the cutting blade holding member to lower the cutting blade and perform a cutting process in which the lead wire is cut by the cutting blade, and is characterized in that the cutting drive mechanism has a downward direction restriction function that restricts the downward direction of the cutting blade to a linear direction when the cutting process is performed. [Effects of the Invention]

[0013] The lead wire cutting device of the present disclosure has the function of restricting the downward movement, so that the cutting blade can always be lowered in a straight line to cut the lead wire.

[0014] As a result, the lead wire cutting device of the present disclosure can improve the cutting ability of lead wires. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is an explanatory diagram showing the overall configuration of an ultrasonic bonding apparatus including a lead wire cutting and holding unit which is a lead wire cutting apparatus according to an embodiment of the present invention; [Figure 2] FIG. 10 is an explanatory diagram showing the ultrasonic bonding device in a lead clamp position. [Figure 3] FIG. 10 is an explanatory diagram showing the ultrasonic bonding device in a lead cutting position. [Figure 4] FIG. 2 is a front view showing the details of the structure of the lead wire cutting and gripping unit according to the embodiment. [Figure 5] 5 is a top view of a part of the lead wire cutting and holding unit shown in FIG. 4, viewed from above. [Figure 6] 6 is a top view showing the planar structure of the cutting blade sliding fitting in a region of interest in FIG. 5. FIG. [Figure 7] 5 is an explanatory diagram showing the internal configuration of the lower unit frame as viewed from above in FIG. 4. [Figure 8] FIG. 2 is a front view showing the cutting blade holding metal fitting and its surrounding structure. [Figure 9] 5 is a side view of the lead wire cutting and holding unit shown in FIG. 4 as viewed from the left side. [Figure 10] FIG. 10 is a top view of the cutting assist receiving bracket viewed from above. [Figure 11] FIG. [Figure 12] 12 is a front view showing the structure of a focused region of the cutting assist receiving bracket shown in FIG. 11. FIG. [Figure 13] 1 is an explanatory diagram (part 1) showing the processing contents of the main cutting processing by the lead wire cutting and gripping unit of the present embodiment. FIG. [Figure 14] 10 is an explanatory diagram (part 2) showing the processing contents of the main cutting process by the lead wire cutting and gripping unit of the present embodiment. FIG. [Figure 15] FIG. 10 is an explanatory diagram (part 3) showing the processing contents of the main cutting process by the lead wire cutting and gripping unit of the present embodiment. [Figure 16] 10A and 10B are explanatory diagrams illustrating the posture of the cutting blade when the main cutting process is performed; [Figure 17] FIG. 4 is a side view showing the tip structure of the cutting edge region of the cutting blade. [Figure 18] FIG. 2 is a front view showing the structure of a first mode of a cutting blade. [Figure 19] FIG. 2 is a perspective view showing the structure of a first embodiment of a cutting blade. [Figure 20] FIG. 10 is a front view showing the structure of a second embodiment of the cutting blade. [Figure 21] FIG. 10 is a perspective view showing the structure of a second embodiment of the cutting blade. DETAILED DESCRIPTION OF THE INVENTION

[0016] <Embodiment> (Ultrasonic bonding device 100) 1 is an explanatory diagram showing the overall configuration of an ultrasonic bonding device 100 including a lead wire cutting and holding unit 9, which is a lead wire cutting device according to this embodiment. FIG. 1 shows an origin standby state.

[0017] As shown in FIG. 1, the ultrasonic bonding device 100 includes, as main components, a bonding table 2, a bonding head unit 3, a lead set unit 4, a tension adjustment unit 5, a lead clamp unit 6, a base 110, a transport conveyor 120, and a drive motor 130 in addition to a lead wire cutting and holding unit 9.

[0018] A joining table 2, a lead setting unit 4, a tension adjusting unit 5, a lead clamp unit 6, a transport conveyor 120, and a drive motor 130 are attached to a base 110.

[0019] The lead wire 81 is wound around a predetermined support shaft in the lead set unit 4 as the central axis, and the tip of the lead wire 81 is exposed to the outside, so that the lead wire 81 can be pulled out from the outside.

[0020] The transport conveyor 120 is used to transport the glass substrate 8 onto the bonding table 2. When viewed from above, the bonding table 2 is composed of three separate plates (regions) consisting of a first end portion, a central portion, and a second end portion. The transport conveyor 120 has belts for transporting the glass substrate 8 provided between the first end portion and the central portion, and between the central portion and the second end portion.

[0021] The belt of the transport conveyor 120 is set at a position higher than the bonding table 2 when transporting the glass substrate 8, and after transporting the glass substrate 8 above the bonding table 2, it moves to a position below the bonding table 2. In this way, the glass substrate 8 can be placed on the bonding table 2 by the transport conveyor 120.

[0022] After the glass substrate 8 is transported, the belt of the transport conveyor 120 is housed below the bonding table 2, so that the transport conveyor 120 does not affect the ultrasonic bonding process for the lead wires 81 on the glass substrate 8.

[0023] 1, in the origin standby state (before lead setting) where the splicing head unit 3 is located at the origin position P0, the lead wire 81 drawn out from the lead setting unit 4 passes through the tension adjusting unit 5 and is then gripped by the lead wire cutting and gripping unit 9. This series of processes for the lead wire 81 is performed manually by an operator.

[0024] The lead wire cutting and holding unit 9 also guides the lead wire 81 in the guide direction, thereby guiding the lead wire 81. The lead wire cutting and holding unit 9 is always guiding the lead wire 81.

[0025] Thereafter, the bonding head unit 3 is moved from the origin position P0 to the lead clamp position P2, thereby attaining the lead clamp position state.

[0026] 2 is an explanatory diagram showing the ultrasonic bonding device 100 in the lead clamp position. In conjunction with the movement of the bonding head unit 3, the lead wire cutting and gripping unit 9 also moves while gripping the lead wire 81.

[0027] Then, a part of the lead wire 81 is temporarily fixed on the glass substrate 8 by the lead clamp unit 6, thereby completing the lead setting operation.

[0028] After the lead setting operation is completed, the lead wire cutting and gripping unit 9 stops gripping the lead wire 81, releases the lead wire 81, and moves the bonding head unit 3 to the bonding position, after which the bonding head unit 3 performs ultrasonic bonding processing on the lead wire 81 placed on the glass substrate 8. As a result, the lead wire 81 is bonded on the glass substrate 8.

[0029] When the ultrasonic bonding process for the lead wires 81 on the glass substrate 8 is all completed, the bonding head unit 3 is moved from the lead clamp position P2 to the lead cut position P1, thereby reaching the lead cut position.

[0030] 3 is an explanatory diagram showing the ultrasonic bonding device 100 in the lead cutting position. In conjunction with the movement of the bonding head unit 3, the lead wire cutting and holding unit 9 also moves.

[0031] Then, the lead wire cutting and gripping unit 9 performs the gripping operation of the lead wire 81 again, and then performs the lead wire cutting process to cut the lead wire 81.

[0032] (Structure of lead wire cutting and gripping unit 9) Figures 4 to 9 are explanatory diagrams showing the detailed structure of the lead wire cutting and gripping unit 9. Figure 4 is a front view of the lead wire cutting and gripping unit 9, Figure 5 is a top view of a part of the lead wire cutting and gripping unit 9 shown in Figure 4 viewed from above (the +Z direction side), Figure 6 is a top view showing the planar structure of the cutting blade sliding fitting 15 in Figure 5 in a focused region R1, and Figure 7 is an explanatory diagram showing the internal structure of the lower guide component group 91 viewed from above in Figure 4.

[0033] Fig. 8 is a front view showing the cutting blade holding fitting 17 and its surrounding structure, and Fig. 9 is a side view of the lead wire cutting and holding unit 9 shown in Fig. 4 as seen from the left side (-X direction side). An XYZ Cartesian coordinate system is shown in each of Figs. 4 to 9.

[0034] As shown in FIG. 4, the lead wire cutting and holding unit 9 includes a lower guide component group 91 and an upper guide component group 92 positioned above the lower guide component group 91.

[0035] The lower guide structure group 91 includes the lower lead guide 11, the lead cutting operation cylinder 13, the lower unit frame 26, the slide guide 27, and the cutting assistance receiving metal fitting 19.

[0036] The upper guide structure group 92 is composed of a bracket 20, a lead holding cylinder 12 (lead clamp 25), an upper unit frame 21, an upper lead guide 23, a frame adapter 22, a guide roller 24, a lead cutting operation cylinder 14, and a cutting blade slide fitting 15.

[0037] The lead wire cutting and holding unit 9 further includes a cutting auxiliary spring 10, link mechanism components 16A and 16B, and a cutting blade holding fitting 17 (cutting blade 18) as components that link the cutting operations of the lower guide component group 91 and the upper guide component group 92.

[0038] The following describes the configuration of the lead wire cutting and holding unit 9. First, each part of the lower guide structure group 91 will be described.

[0039] The lower unit frame 26 accommodates the entire lead cutting operation cylinder 13, slide guide 27, and lower lead guide 11, as well as at least a part of the cutting assistance receiving metal fitting 19.

[0040] 7, the lower lead guides 11 are configured as a pair, and a guide opening space 11s is provided between the pair of lower lead guides 11a and 11b. The pair of lower lead guides 11a and 11b can be attached to and detached from the lower unit frame 26.

[0041] Because the width of the mounting space for the pair of lower lead guides 11 within the lower unit frame 26 is constant, when the width of each of the pair of lower lead guides 11a, 11b increases, the width of the guide opening space 11s decreases. Conversely, when the width of each of the pair of lower lead guides 11a, 11b decreases, the width of the guide opening space 11s increases. Hereinafter, the pair of lower lead guides 11a, 11b will be simply referred to as the lower lead guides 11.

[0042] The guide opening space 11s has a width that is adapted to the width of the lead wire 81 so as to accurately accommodate the lead wire 81. The tip of the guide opening space 11s on the +X direction side is formed to be slightly narrower.

[0043] 7, a slide guide 27 or a cutting assist receiving metal fitting 19 is provided below the guide opening space 11s. Therefore, the lower lead guide 11 has a guide groove 11g of a predetermined width with the slide guide 27 or the cutting assist receiving metal fitting 19 as its bottom surface.

[0044] Figures 10 to 12 are explanatory diagrams showing the detailed structure of the cutting assistance holder fitting 19. Figure 10 is a top view of the cutting assistance holder fitting 19 as seen from above, Figure 11 is a front view of the cutting assistance holder fitting 19, and Figure 12 is a front view showing the structure of the focused area R2 in Figure 11. An XYZ Cartesian coordinate system is shown in each of Figures 10 to 12.

[0045] A connection region 19r of the cutting assistance receiving member 19, which is a cutting assistance receiving member, is connected via a connection member 19m to the other end of the slide guide 27. The cutting assistance receiving member 19 has a lead wire arrangement region 69 at the tip end on the +X direction side.

[0046] 12, the lead wire arrangement region 69 has an arc shape in the depth direction. That is, the lead wire arrangement region 69 has an arc shape with a radius RD1 (mm) in the depth direction. The radius RD1 can be, for example, 3 mm.

[0047] Furthermore, the tip region 69t of the lead wire placement region 69 has an upward inclination angle that inclines upward toward the tip (+X direction), and this upward inclination angle is set to be equal to or greater than 10° and equal to or less than 20°.

[0048] In this manner, the lower lead guide 11 has a guide groove 11g having a predetermined width that can accommodate the lead wire 81.

[0049] The lower lead guide 11, which is the first lead wire guide member, can guide the lead wire 81 in the direction in which the guide groove 11g is formed by placing the lead wire 81 in the guide groove 11g, which serves as the first guide groove. Since the guide groove 11g is formed with the X direction as its longitudinal direction, the lower lead guide 11 can guide the lead wire 81 along the guide direction. To be precise, the guide direction is the diagonal X direction that extends slightly downward (towards the -Z direction) along the X direction.

[0050] As described above, the lower lead guide 11 is provided so as to be removable and attachable within the tip region on the +X side of the lower unit frame 26. Therefore, the lead wire cutting and holding unit 9 of this embodiment can be adapted as follows.

[0051] A plurality of types of lower lead guides 11 having different widths in the Y direction are prepared in advance. That is, a plurality of types of lower lead guides 11 having different widths of guide opening spaces 11s are prepared in advance. Then, of the plurality of types of lower lead guides 11, a lower lead guide 11 having a guide opening space 11s having a width that matches the width of the lead wire 81 is attached to the tip region of the lower unit frame 26.

[0052] As a result, the lower lead guide 11 having the guide opening space 11s with a width that matches the width of the lead wire 81 can be attached to the lower unit frame 26.

[0053] On the other hand, the lower unit frame 26 accommodates all of the cutting aid receiving bracket 19 in the first state described below, and accommodates the cutting aid receiving bracket 19 in a manner such that part of the cutting aid receiving bracket 19 is exposed to the outside on the +X direction side in the second state described below.

[0054] That is, the lower unit frame 26 functions as a cutting assistance receiving member for the cutting assistance receiving metal fitting 19, which is a cutting assistance receiving member.

[0055] As shown in Fig. 4, the lead cutting operation cylinder 13 extends or retracts the piston rod along the cylinder extension / retraction direction D2 (X direction). As shown in Fig. 7, one end of a slide guide 27 is connected to the tip of the piston rod of the lead cutting operation cylinder 13, and one end (connection region 19r) of the cutting assist receiving metal fitting 19 is connected to the other end of the slide guide 27.

[0056] As shown in FIG. 4, the slide guide 27 is connected to one end of the link mechanism part 16A by a connecting rotation shaft 51, and is also connected to one end of the cutting assist spring 10 by the connecting rotation shaft 51.

[0057] 4 and 5, the link mechanism parts 16A are configured as a pair, and each of the pair of link mechanism parts 16A is connected to the slide guide 27 by a connecting rotation shaft 51. Similarly, the cutting assist springs 10 are configured as a pair, and one end of each of the pair of cutting assist springs 10 is connected to the slide guide 27 by the connecting rotation shaft 51. In other words, the connecting rotation shaft 51 also functions as a first spring hook of the pair of cutting assist springs 10.

[0058] Next, we will explain the upper guide structure group 92. The lead gripping cylinder 12 and frame adapter 22 are attached to the bracket 20. The guide roller 24, the lead cutting operation cylinder 14, and the upper unit frame 21 are attached to the frame adapter 22. The guide roller 24 rotates to guide the lead wire 81 to the upper lead guide 23.

[0059] An upper lead guide 23 is attached below a portion of the upper unit frame 21, and as shown in Figure 9, the upper lead guide 23 has a guide groove portion 23g which serves as a second guide groove portion having a width sufficient to accommodate the lead wire 81.

[0060] Since the guide groove portion 23g is formed with the X direction as its longitudinal direction, the upper lead guide 23 can guide the direction of travel of the lead wire 81 along the X direction, which is the guide direction, by placing the lead wire 81 in the guide groove portion 23g.

[0061] Therefore, the upper lead guide 23 functions as a second lead wire guide member that supports the lead wire 81 from below.

[0062] The lead gripping cylinder 12, which is a gripping cylinder, is provided above the upper lead guide 23, and the tip of the piston rod serves as a lead clamp 25 (pressure member).

[0063] The gripping mechanism, which includes the lead gripping cylinder 12 and the upper lead guide 23, lowers the lead clamp 25 by extending the piston rod of the lead gripping cylinder 12, and performs a gripping operation to grip the lead wire 81 by pressing the lead clamp 25 from above against the lead wire 81 supported by the upper lead guide 23.

[0064] In addition, the gripping mechanism raises the lead clamp 25 (pressure member) by the extension and contraction movement of the piston rod of the lead gripping cylinder 12 along the cylinder extension and contraction direction D3, and stops the gripping operation of the lead wire 81 by releasing the pressure applied by the lead clamp 25 from the lead wire 81 supported by the upper lead guide 23.

[0065] The lead cutting operation cylinder 14 extends or retracts the piston rod along the cylinder extension / retraction direction D1. As shown in Figure 4, one end of the cutting blade slide fitting 15 is connected to the tip of the piston rod of the lead cutting operation cylinder 14.

[0066] As shown in FIG. 5, the cutting blade sliding fitting 15 is branched into a pair of branch regions 150 so as to sandwich the link mechanism part 16B in a plan view, and the pair of branch regions 150 are provided extending in the X direction.

[0067] In the intermediate region between the pair of branch regions 150 of the cutting blade sliding fitting 15, the bent portions located in the center of the link mechanism component 16B are connected by the connecting rotation shaft 53. As shown in Figures 5 and 8, a plurality of bearings 73 are provided around the shaft portion of the connecting rotation shaft 53. Therefore, when the link mechanism component 16B rotates in the rotation direction C3 with the connecting rotation shaft 53 as the rotation axis, the posture of the link mechanism component 16B changes along the rotation direction C3.

[0068] In addition, in the branch region 150 of the cutting blade slide fitting 15, the tip region including the connection region with the connecting rotation shaft 53 and the formation region of the guide groove 15g described later is set to have a longer length in the height direction (+Z direction) compared to other regions.

[0069] 5, a pair of spacers 62 are disposed between each of the pair of branch regions 150 and the link mechanism component 16B. Each of the pair of spacers 62 has an opening in the center, and is attached to the connecting rotation shaft 53 in such a manner that the shaft portion of the connecting rotation shaft 53 passes through the opening of each of the pair of spacers 62.

[0070] The cutting blade slide fitting 15 is provided above the upper unit frame 21, and moves along the cylinder extension / retraction direction D1 (diagonal X direction) in conjunction with the extending or retracting movement of the piston rod of the lead cutting operation cylinder 14. The cylinder extension / retraction direction D1 coincides with the guide direction of the lead wire 81.

[0071] As shown in Fig. 5, one end on the -X direction side of the link mechanism component 16B, which is a holding member link mechanism, is connected to the other end of each of the pair of link mechanism components 16A by a connecting rotation shaft 52. Note that, as shown in Figs. 5 and 8, a plurality of bearings 72 are provided around the shaft portion of the connecting rotation shaft 52. Therefore, when the link mechanism components 16A and 16B each rotate in the rotation direction C2 with the connecting rotation shaft 52 as the rotation axis, the relative positional relationship between the link mechanism component 16A and the link mechanism component 16B changes.

[0072] 5, a pair of spacers 61 are disposed between each of the pair of link mechanism components 16A and 16B. Each of the pair of spacers 62 has an opening in the center, and is attached to the connecting rotation shaft 52 in such a manner that the shaft portion of the connecting rotation shaft 52 passes through the opening of each of the pair of spacers 62.

[0073] A cutting blade holding metal fitting 17, which is a cutting blade holding member described in detail later, is positioned above the lead wire 81 when the lead wire 81 is guided along the guide direction by the lower lead guide 11, which is a first lead wire guide member.

[0074] Spring hooks 21f are provided on one side surface and the other side surface of the upper unit frame 21. That is, the spring hooks 21f are configured as a pair, and the other ends of the pair of cutting assist springs 10 are connected to the pair of spring hooks 21f (second spring hooks).

[0075] As shown in FIG. 4, the link mechanism part 16B is configured in a shape that bends in the XZ plane at a bending portion that is a connection portion of the connecting rotation shaft 53, and can rotate within the cutting blade driving range D4 with the connecting rotation shaft 53 as the rotation axis.

[0076] The link mechanism part 16B, which is a holding member link mechanism, has a rotatable connecting shaft 54. One end of the connecting shaft 54 ​​is formed to extend in the +Y direction, and the other end is formed to extend in the -Y direction.

[0077] For example, a structure may be considered in which a through hole extending in the Y direction is provided in the tip region on the +X direction side of the link mechanism component 16B, the connecting shaft 54 ​​is passed through the through hole, and the connecting shaft 54 ​​is rotatably held within the through hole.

[0078] The cutting blade holding metal fitting 17, which is a cutting blade holding member, is connected to the link mechanism part 16B via the connecting shaft 54. That is, the cutting blade holding metal fitting 17 is connected to one end and the other end of the connecting shaft 54.

[0079] Therefore, the cutting blade holding fitting 17 moves up and down together with the connecting shaft 54 ​​as the connecting shaft 54 ​​rotates. In other words, the cutting blade holding fitting 17 can move up and down in the vertical direction by utilizing the horizontal and vertical component movements of the rotational movement trajectory of the connecting shaft 54. Note that a structure in which part of the cutting blade holding fitting 17 covers the tip region of the link mechanism component 16B may be adopted, as long as the up and down movement of the cutting blade holding fitting 17 is not hindered.

[0080] The cutting blade holder 17 moves up and down in conjunction with the connecting shaft 54, thereby changing its posture relative to the main body of the link mechanism part 16B. The main body of the link mechanism part 16B refers to the part of the link mechanism part 16B excluding the connecting shaft 54.

[0081] In this way, the link mechanism part 16B functions as a holding member link mechanism that is connected to the cutting blade holding metal fitting 17 via the connecting shaft 54.

[0082] 5 and 6, the cutting blade sliding fitting 15 included in the first cutting drive mechanism has, as described above, a pair of branch regions 150. Each of the pair of branch regions 150 has a guide groove 15g that guides the movement direction of the cutting blade holding fitting 17 to the vertical direction (a linear direction along the Z direction).

[0083] The cutting blade holding metal fitting 17 is disposed between a pair of guide grooves 15g provided in the pair of branch regions 150. Therefore, the cutting blade holding metal fitting 17 is held between the pair of guide grooves 15g in a state in which it can move only in the vertical direction.

[0084] The cutting blade 18 is attached to the lower tip of the cutting blade holding metal fitting 17. At this time, the cutting blade holding metal fitting 17 is fixed so that the movement direction of the cutting blade holding metal fitting 17 and the forming length direction of the cutting blade 18 are completely aligned. Therefore, when the cutting blade holding metal fitting 17 moves in the vertical direction, the cutting blade 18 also moves in the forming length direction (vertical direction).

[0085] Furthermore, the pair of branch regions 150 have opening regions 15k in a portion of the bottom surface of each of the pair of guide grooves 15g. That is, the pair of branch regions 150 have the pair of opening regions 15k in a portion of the bottom surface of the pair of guide grooves 15g. The pair of opening regions 15k completely coincide with each other in a plan view on the XZ plane.

[0086] Furthermore, one end of the connecting shaft 54 ​​of the link mechanism part 16B, which is the holding member link mechanism, penetrates through the opening region 15k on the +Y direction side of the pair of opening regions 15k, and the other end of the connecting shaft 54 ​​penetrates through the opening region 15k on the −Y direction side of the pair of opening regions 15k, and is held in the guide groove 15g. The width of the pair of opening regions 15k in the X direction is wider than the diameter of the pair of connecting shafts 54.

[0087] 8, in each of the pair of opening regions 15k, the formed length, which is the distance in the height direction (Z direction) between the opening upper side 15k1 and the opening lower side 15k2, is sufficiently longer than the diameter of the connecting shaft 54. Therefore, the connecting shaft 54 ​​can perform rotational and vertical movements within the operating space defined by the pair of opening regions 15k having the above-mentioned formed width and formed length.

[0088] In this way, the pair of opening regions 15k, which are connecting shaft holding portions, hold the connecting shaft 54 ​​so that it can rotate and move up and down.

[0089] In the lead wire cutting and holding unit 9 configured as described above, the lead wire 81 is guided by the guide rollers 24, and then placed in the guide groove 23g of the upper lead guide 23 and the guide groove 11g of the lower lead guide 11, thereby being guided along the guide direction (diagonal X direction). Then, the lead wire 81 is led to the substrate upper surface 8S of the glass substrate 8 directly below the bonding tool 88 of the bonding head unit 3.

[0090] When the ultrasonic bonding process by the bonding head unit 3 is completed for all of the lead wires 81 on the substrate upper surface 8S of the glass substrate 8, the lead wires 81 need to be cut.

[0091] The cutting process by the lead wire cutting and gripping unit 9 includes a preparation process, a cutting blade movement process, and a cutting blade drive process, which will be described below.

[0092] First, as a preparatory process, the gripping mechanism in the lead wire cutting and gripping unit 9 performs a gripping operation to grip the lead wire 81 by pressing the lead wire 81 housed in the guide groove portion 23g of the upper lead guide 23 from above using the lead clamp 25 (pressing member) of the lead gripping cylinder 12.

[0093] In this way, the preparation process is completed by performing the gripping operation of the gripping mechanism including the lead gripping cylinder 12 (lead clamp 25) and the upper lead guide 23. Then, the drive device of the gripping mechanism becomes the lead gripping cylinder 12.

[0094] (Main cutting process (cutting blade movement process and cutting blade drive process)) When the preparation process is completed, the process proceeds to the main cutting process, which includes a cutting blade movement process and a cutting blade drive process, and is executed in this order.

[0095] 13 to 15 are explanatory diagrams showing the main cutting process performed by the lead wire cutting and holding unit 9 of this embodiment. Fig. 16 is an explanatory diagram showing the posture of the cutting blade when the main cutting process is being performed. An XYZ Cartesian coordinate system is shown in each of Figs. 13 to 16.

[0096] Hereinafter, the main cutting process performed by the lead wire cutting and holding unit 9 will be described with reference to these figures.

[0097] 13, immediately after the preparation process is performed, the cutting blade 18 protrudes from the lead wire cutting and holding unit 9 (upper unit frame 21) by the cutting blade protrusion length L18X (first protrusion length) toward the external board upper surface 8S. At this time, a compressive force is acting on the cutting assist spring 10.

[0098] The cutting blade protrusion length L18X is set to be sufficiently short so as not to affect the ultrasonic bonding process performed by the bonding tool 88 of the bonding head unit 3 on the lead wires 81 on the substrate upper surface 8S.

[0099] The lead wire 81 is guided along the guide direction by a guide mechanism including an upper lead guide 23 and a lower lead guide 11, and is held by a holding mechanism including the upper lead guide 23 and a lead holding cylinder 12 (lead clamp 25). A partial area of ​​the lead wire 81 exposed from the lead wire cutting and holding unit 9 (lower lead guide 11) to the external substrate upper surface 8S side becomes the cutting target area 81c (see FIG. 14).

[0100] Thereafter, the cutting blade movement process is performed by the first cutting drive mechanism as shown in Fig. 14. The cutting drive mechanism includes the first cutting drive mechanism and a second cutting drive mechanism, which will be described later.

[0101] The first cutting drive mechanism for the cutting blade movement process is composed of a lead cutting operation cylinder 14, a cutting blade slide fitting 15, a link mechanism part 16A, and a cutting assist spring 10. The first cutting drive mechanism drives the link mechanism part 16B and the cutting blade holding fitting 17 (cutting blade 18). The lead cutting operation cylinder 14 is used as the first cutting cylinder of the first cutting drive mechanism. The cutting blade movement process will be described in detail below.

[0102] First, the piston rod of the lead cutting operation cylinder 14 extends, and the tip of the piston rod of the lead cutting operation cylinder 14 moves in the +X direction along the cylinder extension / contraction direction D1.

[0103] As the cutting blade slide fitting 15 moves in conjunction with the movement of the tip of the piston rod of the lead cutting operation cylinder 14, the link mechanism part 16B, whose bending part is connected by the connecting rotation shaft 53, also moves along the cylinder extension / contraction direction D1. As the cutting blade slide fitting 15 and link mechanism part 16B move, the cutting blade holding fitting 17 also moves in the +X direction.

[0104] Therefore, the cutting blade 18 protrudes outward from the lead wire cutting and gripping unit 9 (upper unit frame 21) by the cutting blade protrusion length L18Y (second protrusion length). The cutting blade protrusion length L18Y is longer than the cutting blade protrusion length L18X.

[0105] In this way, the first cutting drive mechanism executes a cutting blade movement process that moves the cutting blade holder metal fitting 17 so that the outward projection length of the cutting blade 18 from the upper unit frame 21 constituting the guide mechanism changes from the first projection length, that is, cutting blade projection length L18X, to cutting blade projection length L18Y (second projection length) that is longer than the cutting blade projection length L18X. The cutting blade movement process is executed in conjunction with the extension operation of the lead cutting operation cylinder 14, which is the first cutting cylinder.

[0106] The first cutting drive mechanism can also perform a first retraction process to move the cutting blade holder 17 so that the protrusion length of the cutting blade 18 returns from the cutting blade protrusion length L18Y to the cutting blade protrusion length L18X. The first retraction process is performed in conjunction with the extension and contraction of the lead cutting operation cylinder 14.

[0107] The first retraction process is performed after the cutting process is completed. Therefore, in the cutting blade holding fitting 17, the protrusion length of the cutting blade 18 from the upper unit frame 21 is set to the first protrusion length, L18X, during normal operation other than when the cutting process is being performed.

[0108] By performing the cutting blade movement process described above, the lead wire cutting and holding unit 9 can move the cutting blade 18 to a position where it can cut the lead wire 81. That is, as shown in Fig. 14, the portion of the lead wire 81 below and in the vicinity of the cutting blade 18 becomes the area 81c to be cut. Note that even when the cutting blade movement process is being performed, the compressive force of the cutting assist spring 10 acts at its maximum.

[0109] During the cutting blade movement process, the position of the connecting rotation shaft 52 drops in the -Z direction, so the link mechanism part 16B rotates in the cutting blade drive range D4Y with the connecting rotation shaft 53 as the rotation axis.

[0110] As the link mechanism part 16B rotates, the connecting shaft 54 ​​and the cutting blade holder 17 rise. At this time, because the connecting shaft 54 ​​is held within the pair of opening regions 15k in such a manner that the connecting shaft 54 ​​passes through the pair of opening regions 15k, the rotation of the link mechanism part 16B ends when both ends of the connecting shaft 54 ​​come into contact with the upper edges 15k1 of the openings of the pair of opening regions 15k. As the rotation of the link mechanism part 16B ends, the rise of the cutting blade holder 17 also ends.

[0111] In this way, the pair of opening regions 15k have a stopper function that limits the upward stroke of the cutting blade holding metal fitting 17 when the cutting blade movement process is performed by the opening upper sides 15k1.

[0112] 16, after the cutting blade movement process is performed, the cutting blade 18 changes from cutting blade 18X to cutting blade 18Y. Therefore, the region R18 near the cutting edge of the cutting blade 18 rises. Note that, since the cutting blade holding fitting 17 is held by the pair of guide grooves 15g so as to be movable in the vertical direction (linear direction along the Z direction), the cutting blades 18X and 18Y also assume positions along the vertical direction.

[0113] As described above, the cutting blade holding metal fitting 17 can change its orientation relative to the main body of the link mechanism component 16B by rotating together with the connecting shaft 54. Therefore, when the cutting blade movement process is performed, the cutting blade holding metal fitting 17 changes its orientation relative to (the main body of) the link mechanism component 16B, and by raising the cutting blade holding metal fitting 17 along the pair of guide grooves 15g, the orientation of the cutting blade 18 is maintained in the vertical direction.

[0114] In this way, the cutting edge of the cutting blade 18Y is raised higher than that of the cutting blade 18X, so that the cutting blade 18 does not come into contact with the lead wire 81 when the cutting blade movement process is performed.

[0115] Furthermore, when the preparation process and the cutting blade movement process are performed, the piston rod of the lead cut operation cylinder 13 remains in a contracted state, so that the entire cutting aid receiving bracket 19 is in the first state in which it is accommodated within the lower unit frame 26, which is the cutting aid accommodation member.

[0116] Following the cutting blade moving process, as shown in FIG. 15, a cutting blade driving process is executed by a second cutting drive mechanism included in the cutting drive mechanism.

[0117] The second cutting drive mechanism for driving the cutting blade includes a lead cutting operation cylinder 13, a slide guide 27, a link mechanism part 16A, and a cutting assist spring 10. The lead cutting operation cylinder 13 is used as the second cutting cylinder. The second cutting drive mechanism drives the link mechanism part 16B and the cutting blade holding bracket 17 (cutting blade 18).

[0118] The cutting blade driving process includes a main driving process in which the cutting blade holding metal fitting 17 is driven so as to lower the cutting blade 18 and cut the lead wire 81 in the cutting target region 81c, and an auxiliary member moving process.

[0119] The auxiliary member moving process is a process of moving the cutting assistance receiving metal fitting 19, which is the cutting assistance receiving member, from the first state described above to a second state described later.

[0120] The cutting blade driving process will be described in detail below. First, the auxiliary member moving process will be described.

[0121] The leading end of the piston rod of the lead cutting cylinder 13 moves in the +X direction due to the extension operation of the piston rod of the lead cutting cylinder 13 along the cylinder extension / contraction direction D2.

[0122] As the slide guide 27 moves in conjunction with the movement of the tip of the piston rod of the lead cutting operation cylinder 13, the cutting auxiliary receiving metal fitting 19 connected to the other end of the slide guide 27 also moves in the +X direction. Therefore, the cutting auxiliary receiving metal fitting 19, which was in the first state, changes to a second state in which a portion of it protrudes outward from the lead wire cutting and holding unit 9 (lower unit frame 26).

[0123] The cutting assist receiving metal fitting 19 in the second state supports the cutting target region 81c of the lead wire 81 from below in the lead wire arrangement region 69. In this way, the second cutting drive mechanism executes an auxiliary member moving process that moves the cutting assist receiving metal fitting 19 from the first state to the second state.

[0124] Next, the main drive process will be described. As the piston rod of the lead cutting operation cylinder 13 extends, one end (connecting rotation shaft 51) of the link mechanism part 16A moves in the +X direction. On the other hand, the pair of branch areas 150 on the other end side of the cutting blade sliding fitting 15 does not move. The connecting rotation shaft 52, which is the other end of the link mechanism part 16A, is located between the connecting rotation shaft 51 and the connecting rotation shaft 53.

[0125] Therefore, as shown in FIGS. 14 and 15, as one end of the link mechanism component 16A moves in the +X direction, the other end (connection rotation shaft 52) ​​of the link mechanism component 16A rises in the +Z direction.

[0126] Since one end of the link mechanism part 16B is connected to the connecting rotation shaft 52, when one end of the link mechanism part 16B rises, the link mechanism part 16B rotates around the connecting rotation shaft 53 as the rotation axis, and the cutting blade 18 descends within the cutting blade drive range D4Z.

[0127] As the link mechanism part 16B rotates, the connecting shaft 54 ​​and the cutting blade holder 17 descend. At this time, because both ends of the connecting shaft 54 ​​pass through the pair of opening regions 15k, the rotation of the link mechanism part 16B ends when both ends of the connecting shaft 54 ​​come into contact with the opening bottom edges 15k2 of the pair of opening regions 15k. As the rotation of the link mechanism part 16B ends, the descent of the cutting blade holder 17 also ends.

[0128] In this way, the pair of opening regions 15k serving as connecting shaft holding portions have a stopper function that limits the downward stroke of the cutting blade holding metal fitting 17 when the main drive process is being performed by the opening lower sides 15k2.

[0129] As a result, the cutting blade 18 descends, and the main driving process is executed to cut the lead wire 81 with the cutting target area 81c of the lead wire 81 positioned above the lead wire placement area 69 of the cutting assistant receiving bracket 19.

[0130] 16, after the main driving process is performed, the cutting blade 18 descends and changes its posture from cutting blade 18Y to cutting blade 18Z, so that the lead wire 81 can be reliably cut in the cutting target area 81c using the lead wire arrangement area 69 of the cutting assistant receiving metal fitting 19 as a receiving area. As the main driving process is performed, the cutting edge vicinity area R18 of the cutting blade 18 descends.

[0131] The cutting blade holder 17 is held between the pair of guide grooves 15g so as to be movable in the vertical direction (linear direction along the Z direction), and therefore the cutting blade drive range D4Z is a range of movement along the vertical direction. Therefore, the cutting blade 18Z also assumes a position along the vertical direction.

[0132] As described above, the cutting blade holding fitting 17 moves up and down in conjunction with the rotation of the connecting shaft 54, and the attitude of the cutting blade holding fitting 17 relative to the main body of the link mechanism component 16B can be changed. Furthermore, the cutting blade sliding fitting 15 arranges the cutting blade holding fitting 17 between a pair of guide grooves 15g provided in a pair of branch regions 150, and guides the cutting blade holding fitting 17 so that the movement direction is vertical.

[0133] Therefore, when the main drive process is performed, the posture of the cutting blade holding bracket 17 relative to the link mechanism part 16B (main body) is changed, and the cutting blade holding bracket 17 is lowered along the pair of guide grooves 15g, thereby realizing a downward direction regulating function that regulates the downward direction of the cutting blade 18 in the vertical direction.

[0134] In this way, the lead wire cutting and holding unit 9 of this embodiment realizes a downward direction regulating function that regulates the downward direction of the cutting blade 18 in a vertical direction when the main drive process included in the cutting process is performed, by combining the link mechanism part 16B and the cutting blade slide fitting 15.

[0135] During the main drive process, the compressive force of the cutting assist spring 10 is reduced in conjunction with the extension of the lead cutting operation cylinder 13, thereby increasing the descending speed of the cutting blade 18, allowing the cutting blade 18 to smoothly cut the lead wire 81.

[0136] In this way, the cutting blade driving process (auxiliary member moving process + main driving process) linked to the extending operation of the lead cutting operation cylinder 13 is executed, thereby completing the cutting process in which the lead wire 81 is cut in the cutting target region 81c by the cutting blade 18. At this time, the lead cutting operation cylinder 13 functions as a second cutting cylinder.

[0137] The auxiliary member movement process and the main drive process are executed simultaneously, and the timing is set so that the lead wire placement area 69 of the cutting auxiliary support bracket 19 supports the lower part of the cutting target area 81c until the cutting blade 18 cuts the lead wire 81 in the cutting target area 81c.

[0138] The lead wire cutting and holding unit 9 of this embodiment uses lead cutting operation cylinders 13 and 14 as a driving device (driving source) for cutting processing.

[0139] The cutting process is completed by sequentially performing the above-described preparation process, cutting blade movement process, and cutting blade drive process. As a result, as shown in Fig. 15, the lead wire 81 is separated into a remaining lead wire portion 81a and a lead wire joint portion 81b.

[0140] The second cutting drive mechanism can perform a second retraction process to return the cutting assist receiving metal fitting 19 from the second state to the first state. The second retraction process is performed in conjunction with the extension and contraction of the lead cut operation cylinder 13.

[0141] After the cutting process is performed, the second and first retraction processes described above are performed sequentially. The second retraction process is the reverse of the cutting blade drive process, and is a process for returning the state shown in Fig. 15 to the state shown in Fig. 14. The first retraction process is the reverse of the cutting blade movement process, and is a process for returning the state shown in Fig. 14 to the state shown in Fig. 13.

[0142] Therefore, during normal operation other than when the cutting process is being performed, the protruding length of the cutting blade 18 outward from the lead wire cutting and holding unit 9 (upper unit frame 21) is set to the first protruding length, ie, the cutting blade protruding length L18X.

[0143] Similarly, the cutting assistance receiving metal fitting 19 is normally set to the first state described above except when the cutting process is being performed.

[0144] In the lead wire cutting and holding unit 9, which is the lead wire cutting device of this embodiment, a downward direction regulating function is realized by combining a link mechanism part 16B having a connecting shaft 54 ​​with a cutting blade slide fitting 15 having a pair of guide grooves 15g and a pair of opening areas 15k, which guides the cutting blade holding fitting 17 (cutting blade holding member) so that the downward direction of the cutting blade 18 is vertical.

[0145] Therefore, the lead wire cutting and holding unit 9 of this embodiment can improve the cutting performance of the lead wire 81 by always lowering the cutting blade 18 in the vertical direction to cut the lead wire 81.

[0146] In this embodiment, the downward direction of the cutting blade 18 is shown as the vertical direction (a direction at an angle of 90° to the horizontal plane (XY plane)), but the cutting ability of the lead wire 81 can be improved even if the angle with respect to the horizontal plane is other than 90° as long as it is a linear direction. In other words, the downward direction restriction function of the lead wire cutting and holding unit 9 in this embodiment is sufficient if it can restrict the downward direction of the cutting blade 18 to a linear direction when performing the cutting process, and the most desirable linear direction is the vertical direction.

[0147] As described above, the lead wire cutting and gripping unit 9 of this embodiment realizes the function of restricting the downward movement of the cutting blade holding metal fitting 17 by combining the link mechanism part 16B and the cutting blade sliding metal fitting 15.

[0148] Therefore, the lead wire cutting and holding unit 9 of this embodiment can achieve the downward direction regulating function with a relatively simple configuration without providing a dedicated member for the downward direction regulating function.

[0149] In this embodiment, the lead wire placement area 69 in the cutting auxiliary receiving bracket 19 of the lead wire cutting and holding unit 9 has an arc shape in the depth direction, so that the movement of the lead wire 81 during the cutting process can be suppressed, thereby improving the cutting ability of the lead wire 81.

[0150] In addition, in the lead wire cutting and holding unit 9 of this embodiment, the upward inclination angle of the lead wire placement area 69 is set to be greater than or equal to 10° and less than or equal to 20°, thereby suppressing the movement of the lead wire 81 when the cutting process is performed, thereby improving the cutting ability of the lead wire 81.

[0151] (Cutting blade 18 cutting edge structure) 17 is a side view showing the tip structure of the cutting edge region 180 of the cutting blade 18. An XYZ orthogonal coordinate system is shown in the drawing.

[0152] As shown in the figure, the cutting edge angle θ1 in the cutting edge region 180 of the cutting blade 18 is set to be equal to or greater than 30° and equal to or less than 40°, and the cutting edge angle θ1 indicates the angle of the cutting edge region 180 with respect to the cutting blade bottom surface 18h along the Z direction. The above setting of the cutting edge angle θ1 is a feature common to the cutting blades 18A and 18B described below.

[0153] Fig. 18 is a front view showing the structure of a cutting blade 18A which is a first mode of the cutting blade 18, and Fig. 19 is a perspective view showing the structure of the cutting blade 18 A. An XYZ orthogonal coordinate system is depicted in each of Figs. 18 and 19.

[0154] As shown in these figures, the cutting edge region 180 of the cutting blade 18A has multiple wavy edge regions, namely, one wavy edge region C10 and two wavy edge regions C11. The wavy edge regions C10 and C11 each have an arc shape in the depth direction (-X direction). As shown in Fig. 19, the cutting blade 18A has two cutting edge tips K11 (tip convex portions).

[0155] 18, one wavy edge region C10 and two wavy edge regions C11 each have an arc shape with a radius RD2 (mm), and the arc length of the wavy edge region C11 is approximately half the arc length of the wavy edge region C10. The radius RD2 can be, for example, 8 mm.

[0156] Furthermore, the arc shapes of the one wavy edge region C10 and the two wavy edge regions C11 are inclined in the height direction (+Z direction) from the cutting edge tip K11 to the cutting edge deepest part K12.

[0157] That is, the height (TK12) in the +Z direction of the cutting edge innermost part K12 is greater than the height (TK11) in the +Z direction of the cutting edge tip part K11. The arc height t18A (TK12-TK11), which is the distance in the height direction (+Z direction) from the cutting edge tip part K11 to the cutting edge innermost part K12, has a significant value exceeding "0".

[0158] The arc height t18A is set to be equal to or greater than the lead wire thickness t81, which is the thickness in the height direction of the lead wire 81 to be cut. The lead wire thickness t81 may be, for example, 0.15 (mm).

[0159] One possible way to utilize the cutting blade 18A is to prepare multiple types of cutting blades 18A with different arc heights t18A in advance, and use, among the multiple types of cutting blades 18A, a cutting blade 18A with an arc height t18A that is equal to or greater than the lead wire thickness t81 as the cutting blade 18 of the lead wire cutting and holding unit 9 of this embodiment.

[0160] Fig. 20 is a front view showing the structure of a cutting blade 18B which is a second mode of the cutting blade 18, and Fig. 21 is a perspective view showing the structure of the cutting blade 18B. An XYZ orthogonal coordinate system is depicted in each of Figs. 20 and 21.

[0161] As shown in these figures, the cutting edge region 180 of the cutting blade 18B has four wavy edge regions C20 as the multiple wavy edge regions. As shown in Fig. 21, the cutting blade 18B has five cutting edge tips K21 (tip convex portions).

[0162] Each of the four wavy edge regions C20 has an arc shape in the depth direction (-X direction). In Fig. 20, the wavy edge region C20 has an arc shape with a radius RD3 (mm). The radius RD3 can be, for example, 2 mm.

[0163] Furthermore, the arc shape of each of the four wavy blade regions C20 has a slope in the vertical direction from the cutting edge tip K21 to the cutting edge deepest part K22, and the arc height t18B, which is the distance in the vertical direction (+Z direction) from the cutting edge tip K21 to the cutting edge deepest part K22, has a significant value exceeding "0".

[0164] The arc height t18B is set to be equal to or greater than the lead wire thickness t81, which is the thickness of the lead wire 81 in the height direction.

[0165] One possible way to utilize the cutting blade 18B is to prepare multiple types of cutting blades 18B with different arc heights t18B in advance, and use, among the multiple types of cutting blades 18B, a cutting blade 18B with an arc height t18B that is equal to or greater than the lead wire thickness t81 as the cutting blade 18 of the lead wire cutting and holding unit 9 of this embodiment.

[0166] In the first aspect of the lead wire cutting and holding unit 9 of this embodiment (Figures 18 and 19), the cutting edge region 180 of the cutting blade 18A has multiple wavy blade regions, namely, one wavy blade region C10 and two wavy blade regions C11, and the one wavy blade region C10 and the two wavy blade regions C11 each have an arc shape in the depth direction.

[0167] Therefore, the first aspect of the present embodiment can exert a lead wire deformation suppression function that suppresses deformation and twisting of the lead wire 81 when cutting is performed using the cutting blade 18A.

[0168] Furthermore, in the first aspect of this embodiment, the arc height t18A of each of the one wavy blade region C10 and the two wavy blade regions C11 has a significant value exceeding "0." Therefore, by setting the arc height t18A to be equal to or greater than the lead wire thickness t81 of the lead wire 81, it is possible to improve the function of suppressing the above-mentioned lead wire deformation, etc., when performing a cutting process using the cutting blade 18A. Note that, from the viewpoint of reliable cutting of the lead wire 81, it is preferable to set the arc height t18A higher (longer) than the lead wire thickness t81.

[0169] In the second aspect of the lead wire cutting and holding unit 9 of this embodiment, the cutting edge region 180 of the cutting blade 18B has four wavy blade regions C20 as multiple wavy blade regions, and each of the four wavy blade regions C20 has an arc shape in the depth direction.

[0170] Therefore, the second aspect of the present embodiment can exert the function of suppressing the deformation of the lead wire when the cutting process is performed using the cutting blade 18B.

[0171] Furthermore, in the second aspect of this embodiment, the arc height t18B of each of the four wavy blade regions C20 has a significant value exceeding "0." Therefore, by setting the arc height t18B to be equal to or greater than the lead wire thickness t81 of the lead wire 81, it is possible to improve the function of suppressing the deformation of the lead wire when performing the cutting process using the cutting blade 18B. Note that, from the viewpoint of reliable cutting of the lead wire 81, it is preferable to set the arc height t18B higher (longer) than the lead wire thickness t81.

[0172] Furthermore, in the lead wire cutting and holding unit 9 (first and second aspects) of this embodiment, the cutting edge angle θ1 in the cutting edge region 180 of the cutting blade 18 (18A and 18B) is set to 30° or more and 40° or less, thereby improving the function of suppressing the above-mentioned lead wire deformation, etc. when the cutting process is performed by the cutting blade 18.

[0173] (Other features) The group of regulation-related components related to the downward direction regulation function may include the cutting blade slide fitting 15, link mechanism part 16B, cutting blade holding fitting 17, cutting blade 18, cutting auxiliary receiving fitting 19, and connecting rotation shaft 53.

[0174] Since each component of the above-mentioned regulation-related component group is replaceable, the lead wire cutting and gripping unit 9 of this embodiment can be realized, for example, by utilizing most of the conventional ultrasonic bonding device disclosed in Document 1 and using only the components that fall under the above-mentioned regulation-related component group as new components.

[0175] Therefore, as the auxiliary member moving process, cutting blade moving process, and preparation process other than the main drive process, for example, the auxiliary member moving process, cutting blade moving process, and preparation process performed in the ultrasonic bonding device disclosed in Document 1 can be utilized.

[0176] In this way, the lead wire cutting and holding unit 9 of this embodiment can be realized at a relatively low cost by minimizing the number of components and operation processing contents that differ from those of conventional ultrasonic bonding devices.

[0177] Furthermore, the lead wire cutting and holding unit 9 of this embodiment can be returned to the state after the preparation process shown in Figure 13 by sequentially performing the second and first evacuation processes described above after the cutting process is performed.

[0178] Therefore, by returning to the state shown in Figure 13 after performing the cutting process, the lead wire cutting and holding unit 9 of this embodiment can ensure the length of the lead wire 81 on the upper surface 8S of the glass substrate required for ultrasonic bonding by the bonding tool 88.

[0179] Furthermore, in the state shown in Figure 13, the cutting blade holding bracket 17 and the cutting auxiliary receiving bracket 19 are retracted toward the device (-X direction), so that a working space can be secured for fixing a portion of the lead wire 81 using the lead clamp unit 6 (see Figure 1).

[0180] It should be noted that the present disclosure allows modifications and omissions to be made to the embodiments as appropriate within the scope of the disclosure. [Explanation of symbols]

[0181] 3. Junction head unit 9 Lead wire cutting and gripping unit 11 Lower lead guide 12 Lead gripping cylinder 13,14 Lead cut operation cylinder 15 Cutting blade slide fitting 15k aperture area 15g guide groove 16A, 16B Link mechanism parts 17 Cutting blade holding bracket 18, 18A, 18B cutting blade 19 Cutting support bracket 23 Upper lead guide 27 Slide Guide 54 Connecting shaft 69 Lead Wire Placement Area 100 Ultrasonic bonding equipment 180 cutting edge area C10,C11,C20 wave edge area

Claims

1. a guide mechanism for guiding the lead wire in a direction of travel; a cutting blade holding member positioned above the lead wire guided by the guide mechanism and having a cutting blade at a tip portion; a cutting drive mechanism that drives the cutting blade holding member to lower the cutting blade and executes a cutting process in which the lead wire is cut by the cutting blade, the cutting drive mechanism has a downward direction regulating function that regulates the downward direction of the cutting blade in a linear direction when the cutting process is performed, the linear direction includes a vertical direction, a holding member link mechanism having a rotatable connecting shaft and connected to the cutting blade holding member via the connecting shaft; a cutting assistance receiving member having a lead wire arrangement area at its tip; a cutting assistance receiving member that receives at least a portion of the cutting assistance receiving member therein, wherein the cutting assistance receiving member is normally set to a first state in which the entire cutting assistance receiving member is received within the cutting assistance receiving member; the cutting blade holding member is set so that a protruding length of the cutting blade from the guide mechanism to the outside is a first protruding length under normal conditions; the cutting process includes a cutting blade moving process and a cutting blade driving process, The cutting drive mechanism includes: a first cutting drive mechanism that executes the cutting blade movement process; a second cutting drive mechanism that executes the cutting blade drive process, The first cutting drive mechanism includes: a guide groove for guiding the cutting blade holding member so that the moving direction of the cutting blade holding member is vertical; The first cutting drive mechanism includes: performing the cutting blade movement process of moving the holding member link mechanism and the cutting blade holding member so that the protrusion length of the cutting blade from the guide mechanism changes from the first protrusion length to a second protrusion length that is longer than the first protrusion length; the second cutting drive mechanism executes the cutting blade drive process after the cutting blade movement process, The cutting blade driving process includes: a main driving process in which the holding member link mechanism is driven so that the cutting blade holding member is lowered, and the lead wire is cut by the cutting blade in the cutting target area; an auxiliary member moving process for moving the cutting assistance receiving member from the first state to a second state, the second state being a state in which a part of the cutting assistance receiving member protrudes outward from the cutting assistance housing member, and the cutting assistance receiving member in the second state supports the cutting target region of the lead wire within the lead wire arrangement region; The downward direction regulating function is a function of regulating the downward direction of the cutting blade in a vertical direction by lowering the cutting blade holding member along the guide groove while changing the attitude of the cutting blade holding member relative to the holding member link mechanism in accordance with the rotation of the connecting shaft during execution of the main drive process. Lead wire cutting device.

2. 2. The lead wire cutting device according to claim 1, The tip region of the cutting blade includes a plurality of serrated blade regions, Each of the plurality of wavy blade regions has an arc shape in the depth direction. Lead wire cutting device.

3. 3. The lead wire cutting device according to claim 2, The arc shape of each of the plurality of wavy blade regions has a slope in a height direction from a tip of the cutting edge to a deepest part of the cutting edge, and an arc height, which is a distance in a height direction from the tip of the cutting edge to the deepest part of the cutting edge, has a significant value exceeding "0." Lead wire cutting device.

4. 2. The lead wire cutting device according to claim 1, The cutting edge angle at the tip region of the cutting blade is set to be equal to or greater than 30° and equal to or less than 40°. Lead wire cutting device.

5. 2. The lead wire cutting device according to claim 1, The lead wire arrangement region has an arc shape in the depth direction. Lead wire cutting device.

6. The lead wire cutting device according to claim 1 or 5, the lead wire arrangement region has an upward inclination angle that inclines upward toward the tip end, and the upward inclination angle is set to be equal to or greater than 10° and equal to or less than 20°; Lead wire cutting device.

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