Manufacturing apparatus and method for chained terminals

Abstract

To eliminate inconvenience at the time when a chain terminal is wound up and rewound.SOLUTION: A press device can manufacture a band plate-like chain part and a plurality of terminals connected in series via the chain part from a metal plate, and comprises: a terminal formation part that punches out the metal plate to form the plurality of terminals; and a chain part processing part that processes the metal plate so that its strength in a plate thickness direction at a portion that becomes the chain part is reduced compared with that at the other portion.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to an apparatus for manufacturing a chained terminal in which a plurality of terminals are connected to a strip-shaped linking portion (carrier), and a method for manufacturing the chained terminal. [Background technology]

[0002] Chained terminals are widely known as terminals for electrical connection (see Patent Document 1). A chained terminal is a terminal in which a plurality of terminals are connected to a strip-shaped chain part (carrier). In factories that manufacture this type of chained terminal, the chain part of the manufactured chained terminal is wound up on a winding drum and then transported to another process (such as a plating process). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-5500 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the metal plate that forms the linking part and the terminal becomes thick, such as in the case of high voltage terminals, the rigidity of the linking part becomes high. This increases the winding load, and there is an inconvenience that it takes time to straighten the curl (curvature) of the linking part when it is transported to the next process (continuous plating process, etc.) after winding.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to provide a chained terminal manufacturing apparatus and a chained terminal manufacturing method that can eliminate the inconveniences that occur when winding and unwinding chained terminals. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the manufacturing apparatus for chained terminals according to the present invention has the following features. A chain terminal manufacturing apparatus for manufacturing a strip-shaped linking portion and a plurality of terminals linked via the linking portion from a metal plate, comprising: a terminal forming section that forms a plurality of terminals by punching a metal plate; A linking portion processing portion is provided in the metal plate so that the strength in the plate thickness direction of the portion that becomes the linking portion is reduced compared to the strength in the plate thickness direction of the other portion, before The chain processing section is A number of V-shaped grooves extending along a width direction of the linking portion are formed on a surface of the linking portion so as to be aligned in the longitudinal direction at intervals smaller than an interval between adjacent terminals in the longitudinal direction of the linking portion, and so that adjacent grooves in the longitudinal direction are connected to each other. Chain terminal manufacturing equipment.

[0007] In order to achieve the above-mentioned object, the method for manufacturing a chained terminal according to the present invention has the following features. A method for manufacturing a chained terminal, comprising the steps of: manufacturing a strip-shaped linking portion and a plurality of terminals linked via the linking portion from a metal plate, the method comprising the steps of: stamping a metal plate to form a plurality of terminals; and processing the metal plate so that the strength in the plate thickness direction of the portion that becomes the linking portion is reduced compared to the strength in the plate thickness direction of other portions, The processing step includes: A number of V-shaped grooves extending along a width direction of the linking portion are formed on a surface of the linking portion so as to be aligned in the longitudinal direction at intervals smaller than an interval between adjacent terminals in the longitudinal direction of the linking portion, and so that adjacent grooves in the longitudinal direction are connected to each other. A method for manufacturing chain terminals. Effect of the Invention

[0008] According to the present invention, the strength (i.e., rigidity) in the plate thickness direction of the portion constituting the linking portion (linking plate material) can be made lower than that of the portion constituting the terminal, so that the burden when winding up the linking portion can be reduced. In addition, the occurrence of curling can be reduced, so that the burden when correcting the curling in a later process can be reduced or eliminated.

[0009] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the preferred embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a plan view of a main portion of a first embodiment of the present invention. [Diagram 2] FIG. 2 is a side cross-sectional view of the first embodiment of the present invention. [Diagram 3] FIG. 3 is a plan view of a main part for explaining a process of the first embodiment of the present invention. [Figure 4] FIG. 4 is a block diagram showing a schematic configuration of the first embodiment of the present invention. [Diagram 5] FIG. 5 is a plan view of a main portion of the second embodiment of the present invention. [Figure 6] FIG. 6 is a side cross-sectional view of a second embodiment of the present invention. [Figure 7] FIG. 7 is a plan view of a main part for explaining a process of the third embodiment of the present invention. [Figure 8] FIG. 8 is a side cross-sectional view for explaining the process of the third embodiment of the present invention. [Figure 9] FIG. 9 is a plan view of the fourth embodiment of the present invention. [Figure 10] FIG. 10 is a side view of a linking portion according to the fourth embodiment of the present invention. [Figure 11] FIG. 11 is a plan view of the fifth embodiment of the present invention. [Figure 12] FIG. 12 is a plan view of the sixth embodiment of the present invention. [Figure 13] FIG. 13 is a view taken along the arrow A in FIG. [Figure 14] FIG. 14 is a plan view of the seventh embodiment of the present invention. [Figure 15] FIG. 15 is a side view for explaining the process of the seventh embodiment of the present invention. [Figure 16] FIG. 16 is a cross-sectional view taken along line AA in FIG. [Figure 17]FIG. 17 is a side view and a cross-sectional view for explaining the process of the eighth embodiment of the present invention. [Figure 18] FIG. 18 is a plan view showing a state before the plate width reduction process according to the ninth embodiment of the present invention. [Figure 19] FIG. 19 is a cross-sectional view taken along line AA in FIG. [Figure 20] FIG. 20 is a plan view showing a state after the plate width reduction process according to the ninth embodiment of the present invention. [Figure 21] FIG. 21 is a cross-sectional view taken along line BB in FIG. [Figure 22] FIG. 22 is a side view showing how the product is wound up in the ninth embodiment of the present invention. [Figure 23] FIG. 23 is a side view for explaining the process of the tenth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Specific embodiments of the present invention will be described below with reference to the accompanying drawings. In the following embodiment, a case will be taken as an example in which the terminal is a high-voltage terminal having a large plate thickness.

[0012] First Embodiment A manufacturing apparatus for chained terminals according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. The manufacturing apparatus of this embodiment has a chained terminal primary processing means and a chained terminal secondary processing means. 1 to 3, the primary chain terminal processing means presses a thick first metal plate into a chain terminal having a band-shaped linkage portion 10 and a plurality of terminals 1 connected to the linkage portion 10 via link portions 2. During this press processing, two pilot holes (small holes) 12 are formed in the linkage portion 10 for each terminal 1.

[0013] Next, the secondary chain terminal processing means separates the chain portion 10 of the chain terminal processed by the primary chain terminal processing means in its longitudinal direction into each terminal 1 (the form shown in Figs. 1 to 3). Then, each separated chain portion 10 is joined to another band-shaped chain plate material 20 made of a second metal plate having a thickness smaller than that of the first metal plate by fitting and crimping convex portions and small holes formed in the thickness direction, and the chains are re-linked.

[0014] That is, when the chaining plate material 20 is processed, the chaining plate material 20 is provided with protrusions 22 corresponding to the pilot holes 12 of the linking parts 10. Then, these two protrusions 22 are fitted into the two pilot holes 12, respectively, and the protrusions 22 are tightened. In this way, the new chaining plate material 20 and the terminal 1 are connected via the cut-off linking parts 10.

[0015] As shown in Fig. 3, the terminal 1 with the cut-off linking portion 10 is pushed and moved by a pushing member N1 to a position on a new linking plate 20. Then, the two pilot holes 12 provided in the linking portion 10 are fitted into the two protruding portions 22 of the new linking plate 20, and the protruding portions 22 are crimped in this state by the crimping members N2 and N3, so that the terminal 1 can be connected to the linking plate 20 via the cut-off linking portion 10. In this way, a chained terminal made of a composite material is completed, in which the terminal 1 is made of a first metal plate having a large plate thickness, and the linking portion (linking plate 20) is made of a second metal plate having a small plate thickness. Here, the protruding portions 22 may be formed by burring or doweling.

[0016] FIG. 4 is a block diagram of a manufacturing system 200 including the manufacturing apparatus according to the embodiment. As shown in FIG. 4(a), the manufacturing system 200 is mainly configured with a progressive die type press machine 100 as a manufacturing device for a chained terminal of the embodiment, and includes a material supplying device 101, a material feeding device 102, a product discharging device 104, and a product winding device 105. The material supplying device 101 supplies material for the terminal 1. In this embodiment, in addition to the material for the terminal 1, the material for the chain plate material 20 is supplied. The material feeding device 102 sends the material supplied by the material supplying device 101 to the press machine 100. The press machine 100 forms a chained terminal, which is a product manufactured by this manufacturing system 200. The product manufactured by the press machine 100 is discharged by the product discharging device 104 and wound by the product winding device 105. In this embodiment, as shown in FIG. 4(b), the press machine 100 is provided with a terminal forming section 131 as a chained terminal primary processing means, and a burring section 132 and a joining section 133 as chained terminal secondary processing means. The terminal forming section 131 forms a plurality of terminals 1 connected to the linking section 10 via the connecting sections 2. The burring section 132 forms protrusions 22 on the chaining plate material 20. The joining section 133 separates the chained terminals processed by the terminal forming section 131 into individual terminals 1 in the longitudinal direction, and crimps them with the two pilot holes 12 of the linking section 10 fitted into the two protrusions 22 (see Figs. 2 and 3). In this manner, the chained terminals are manufactured in the press device 100.

[0017] According to the above configuration, the terminals 1 are chained using the chain plate material 20 having a thickness smaller than that of the terminals 1 processed by the terminal forming section 131 as the chain terminal primary processing means, so that the rigidity of the portion constituting the chain portion (chain plate material 20) can be made smaller than that of the portion constituting the terminals 1. Therefore, the burden when winding the chain portion (chain plate material 20) can be reduced. Furthermore, by winding the chain portion (chain plate material 20) having a small thickness, the occurrence of a curl can be reduced, so that the burden when correcting the curl in a later process can be reduced or eliminated. In other words, the terminals 1 can be supplied in a chained state to a later process such as continuous plating. Furthermore, since winding without a curl can be achieved, it is possible to eliminate the need for a process for correcting the curl. Furthermore, by fitting and crimping the two pilot holes 12 and the two protrusions 22 as in the embodiment, the rotation of the terminals 1 can be restricted even if the pilot holes 12 and the protrusions 22 are circular.

[0018] Although the materials of the terminal 1 and the chain plate material 20, which are the product, can be set to different materials, it is preferable that they are the same.

[0019] <Second embodiment> A chained terminal manufacturing apparatus according to a second embodiment of the present invention will be described with reference to Figures 5 and 6. The following description will focus on the differences from the first embodiment. In the second embodiment, as shown in Figures 5 and 6, the primary chain terminal processing means presses a chain terminal having a band-shaped linking portion 10 and a plurality of terminals 1 connected to the linking portion 10 via linking portions 2 from a first metal plate having a large plate thickness. During this press processing, one small rectangular hole 15 is formed in the linking portion 10 for each terminal 1. The position of the small rectangular hole 15 is preferably located on an extension of the terminal 1.

[0020] Next, in the chain terminal secondary processing means, the chain portion 10 of the chain terminal processed by the chain terminal primary processing means is cut off to an appropriate width for each terminal 1. Then, each cut off chain portion 10 is joined to another band-shaped chain plate material 20 made of a second metal plate having a thickness smaller than that of the first metal plate by fitting and crimping convex portions formed in the plate thickness direction and small holes, and the terminals are again chained.

[0021] That is, when the chaining plate 20 is processed, a rectangular convex portion 25 corresponding to the rectangular small hole 15 of the linking portion 10 is provided on the chaining plate 20. Then, the rectangular small hole 15 is fitted into the rectangular convex portion 25, and the convex portion 25 is crimped with a crimping member. In this manner, a new chaining plate 20 and the terminal 1 can be connected via each of the cut linking portions 10.

[0022] In this case, the same effect as in the first embodiment can be obtained. In addition, by fitting the rectangular small hole 15 into the rectangular protrusion 25 and crimping it, the combination of one protrusion 25 and small hole 15 can restrict the rotation of the terminal 1. Therefore, since it is sufficient to separate the linking part 10 within the dimension including one small hole 15, the separation dimension of the linking part 10 can be minimized. As a result, the overlap dimension of the release linking part 10 when joined to the linking plate material 20 can be reduced, and the resistance due to the thick release linking part 10 when winding up the linking plate material 20 is reduced.

[0023] <Third embodiment> A chained terminal manufacturing apparatus according to a third embodiment of the present invention will be described with reference to Fig. 7 and Fig. 8. Note that the cross sections taken along the lines AA, BB, and CC in Fig. 7 correspond to the views AA, BB, and CC in Fig. 8. The following description will focus on the differences from the first embodiment.

[0024] 7 and 8, in the third embodiment, the chained terminal primary processing means presses a thick first metal plate into a chained terminal having a strip-shaped linking portion 10 and a plurality of terminals 1 connected to the linking portion 10 via linking portions 2. During this press processing, small holes 13 are formed in the linking portion 2.

[0025] Next, in the chain terminal secondary processing means, the link portion 2 of the chain terminal processed by the chain terminal primary processing means is cut at a position close to the chain portion 10, and the terminal 1 with the link portion 2 remaining is separated from the chain portion 10. Then, the separated link portion 2 is joined to another chain plate material 20 in the form of a strip made of a second metal plate having a thickness smaller than that of the first metal plate by fitting and crimping a protrusion formed in the thickness direction with a small hole, thereby forming a new chain.

[0026] That is, when processing the chaining plate 20, a square-shaped protrusion 23 corresponding to the small hole 13 of the connecting portion 2 is provided on the chaining plate 20. Then, the small hole 13 is fitted into the protrusion 23, and the protrusion 23 is crimped with a crimping member. In this way, the new chaining plate 20 and the terminal 1 can be joined via the connecting portion 2.

[0027] In this case, too, it is possible to obtain the same effects as in the first embodiment. In addition, since the terminal 1 is not cut off at the linking portion 10 but at the connecting portion 2, it is possible to further reduce the resistance when winding up the chain plate material 20.

[0028] In the above first to fourth embodiments, the protrusions 22, 23, 25 are formed in the chaining plate material 20 having a small plate thickness, and the small holes 12, 13, 15 are formed in the linking portion 10 and the connecting portion 2 having a large plate thickness, but the reverse may be true. That is, the protrusions 22, 23, 25 may be formed in the linking portion 10 and the connecting portion 2 having a large plate thickness, and the small holes 12, 13, 15 may be formed in the chaining plate material 20 having a small plate thickness.

[0029] <Fourth embodiment> A chained-terminal manufacturing apparatus according to a fourth embodiment of the present invention will be described with reference to Figures 9 and 10. The following description will focus on the differences from the first embodiment. The manufacturing apparatus of this embodiment has a terminal forming means and a groove forming means (corresponding to the "linking portion processing unit"). These means can be incorporated into one press device.

[0030] First, the terminal forming means forms a chained terminal having a band-shaped linking portion 10 and a plurality of terminals 1 connected to the linking portion 10 via connecting portions 2 from a single metal plate, as shown in FIG.

[0031] Next, the groove forming means forms a large number of V-grooves (concave grooves) 17 along the width direction continuously in the longitudinal direction on the surface of the band-shaped linking portion 10 as shown in Fig. 10, thereby reducing the bending rigidity along the longitudinal direction of the linking portion 10. In other words, by forming a large number of V-grooves 17 in the linking portion 10, locally thin portions are provided intermittently in the longitudinal direction of the connecting portion. This makes it easier for the linking portion 10 to bend even if the plate thickness before pressing is large, and enables winding without curling.

[0032] <Fifth embodiment> A manufacturing apparatus for a chained terminal according to a fifth embodiment of the present invention will be described with reference to Fig. 11. The following description will focus on the differences from the first embodiment. The manufacturing apparatus of this embodiment has a terminal forming means and an opening forming means (corresponding to the "linking portion processing unit"). These means can be incorporated into one press device.

[0033] First, the terminal forming means forms a chained terminal having a strip-shaped linking portion 10 and a plurality of terminals 1 connected to the linking portion 10 via connecting portions 2 from a single metal plate, as shown in FIG.

[0034] Next, the groove forming means forms a number of lightening openings 16 in the band-shaped linking portion 10 to reduce the bending rigidity along the longitudinal direction of the linking portion 10. By doing so, even if the plate thickness before pressing is large, the linking portion 10 becomes easier to bend, and winding without curling becomes possible. The lightening openings 16 are provided only to cut out a predetermined shape from the linking portion 10, so the load is small. The positions at which the lightening openings 16 are provided are not limited, but by providing the lightening openings 16 in a balanced manner, stress can be reduced. The lightening openings 16 are provided separately from the pilot holes.

[0035] Sixth embodiment A manufacturing apparatus for chained terminals according to a sixth embodiment of the present invention will be described with reference to Figures 12 and 13. The following description will focus on the differences from the first embodiment. The manufacturing apparatus of this embodiment has plate material joining means (corresponding to the "linking portion processing portion") and terminal forming means. First, as shown in Figures 12 and 13, the plate material joining means forms a single plate material having two regions of different thicknesses by laser joining (jointing point Ls) the side edges of a first metal plate 10S having a greater thickness and a second metal plate 20S having a smaller thickness than the first metal plate 10S. Then, the press device as the terminal forming means forms a band-shaped linking portion 20P from the second metal plate 20S, and forms a plurality of terminals 1 from the first metal plate 10S, each connected to the linking portion 20P via a connecting portion 2. This makes the linking portion 20P easier to bend, enabling winding without curling.

[0036] Seventh embodiment A chained-terminal manufacturing apparatus according to the seventh embodiment of the present invention will be described with reference to Figures 14 to 16. The following description will focus on the differences from the first embodiment. The manufacturing apparatus of this embodiment has a terminal forming means and a plate thickness reducing means. First, the terminal forming means forms a chained terminal having a band-shaped linking portion 10 and a plurality of terminals 1 connected to the linking portion 10 via connecting portions 2 from a metal plate of a certain thickness, as shown in Fig. 14. Next, as shown in Fig. 15, a cutting device or polishing device 110 as a thickness reducing means is used to reduce the thickness of the band-shaped linking portion 10 before winding the chained terminal onto the drum 80. As a result, the thinned linking portion 10A is wound onto the drum 80 as shown in Fig. 16, so that the linking portion 10A is easily curved, enabling winding without curling.

[0037] Eighth embodiment With reference to FIG. 17, a manufacturing apparatus for a chained terminal according to an eighth embodiment of the present invention will be described. The manufacturing apparatus of this embodiment differs from the seventh embodiment only in that a set 70 of rolling rollers 71, 72, and 73 is used as a plate thickness reducing means to reduce the plate thickness of the linking portion 10, but the effect is the same.

[0038] <Ninth embodiment> A chained terminal manufacturing apparatus according to a ninth embodiment of the present invention will be described with reference to Fig. 18 to Fig. 22. Fig. 19 is a cross-sectional view taken along line AA in Fig. 18, and Fig. 21 is a cross-sectional view taken along line BB in Fig. 20. The manufacturing apparatus of this embodiment has a terminal forming means and a plate width reducing means. The following will mainly describe the differences from the first embodiment. First, the terminal forming means forms a chained terminal having a band-shaped linking portion 10 and a plurality of terminals 1 connected to the linking portion 10 via linking portions 2 from a metal plate of a certain thickness, as shown in Figures 18 and 19. Next, the plate width reducing means processes the band-shaped linking portion 10 to reduce its width, as shown in Figures 20 and 21. That is, the plate width HB1 of the initial linking portion 10 is shaped into a linking portion 10B having a plate width HB2 by the plate width reducing means. This reduces the bending rigidity of the band-shaped linking portion 10, so that the linking portion 10B becomes easier to bend as shown in FIG. 22, and winding can be performed without causing curling.

[0039] Tenth embodiment A manufacturing apparatus for a chained terminal according to a tenth embodiment of the present invention will be described with reference to FIG. The device of this embodiment is a winding device that winds up a chained terminal, which has a strip-shaped linking portion 10 manufactured by a press device 50 and a plurality of terminals connected to the linking portion via a connecting portion, on a winding drum 80. This winding device is provided with a curve-creation adding means 60 that adds a curve to the linking portion 10 for winding by a plurality of rollers 61, 62, 63 at the front stage of the winding drum 80. In this way, the radius R of the curve can be adjusted by the arrangement of the plurality of rollers 61, 62, 63, so that even if the plate thickness of the linking portion 10 is large during winding, winding can be easily performed. In addition, during unwinding, the same rollers 61, 62, 63 can be used as a curve-creation removing means to correct the curve. The device of this tenth embodiment may be used alone, but if it is used in combination with the manufacturing devices of the first to ninth embodiments described above, for example by replacing the press device 50 with the press device 100, a higher effect can be obtained.

[0040] Here, the features of the chained terminal manufacturing apparatus and the chained terminal manufacturing method according to the above-described embodiment of the present invention will be briefly summarized and listed in the following [1] to [5].

[0041] [1] A manufacturing apparatus (press machine 100) for a chained terminal, which manufactures a strip-shaped linking portion (10) and a plurality of terminals (1) connected via the linking portion from a metal plate, comprising: a terminal forming section (131) for forming a plurality of terminals (1) by punching a metal plate; The metal plate is provided with a linking portion processing portion (groove forming means, opening forming means, plate material joining means) that processes the metal plate so that the strength in the plate thickness direction of the portion that becomes the linking portion is reduced compared to the strength in the plate thickness direction of the other portions. Manufacturing apparatus for chain terminals (press device 100).

[0042] When multiple terminals having a thickness equal to or greater than a certain thickness are connected by a linking portion (carrier) and wound on a reel, they will develop a curl, but with the manufacturing device having the configuration of [1] above, the strength in the thickness direction of the portion of the metal plate that will become the linking portion is reduced compared to the strength in the thickness direction of the other portions, making it possible to supply the terminals in a linked state to subsequent processes such as continuous plating. In addition, since winding without curls is possible, a process to correct the curl is not required.

[0043] [2] The manufacturing apparatus (pressing apparatus 100) for the chained terminals according to the above [1], The linking portion processing portion (groove forming means) is A number of grooves are formed on the surface of the linking portion (10) in the width direction of the linking portion and continuously in the longitudinal direction of the linking portion. Manufacturing apparatus for chain terminals (press device 100).

[0044] According to the manufacturing device of the configuration [2] above, the linking part processing part forms a number of grooves along the width direction of the linking part continuously in the longitudinal direction of the linking part on the surface of the linking part, so that the strength in the thickness direction of the part of the metal plate that becomes the linking part can be reduced compared to the strength in the thickness direction of the other parts, thereby eliminating the inconvenience when winding and unwinding the chained terminal.

[0045] [3] The manufacturing apparatus (pressing apparatus 100) for the chained terminals according to the above [1], The linking portion processing portion (opening forming means) is A plurality of lightening openings are formed in the linking portion (10) along the longitudinal direction of the linking portion. Manufacturing apparatus for chain terminals (press device 100).

[0046] According to the manufacturing device having the configuration of [3] above, the linking portion processing portion forms a plurality of lightening openings in the linking portion along the longitudinal direction of the linking portion, so that the strength in the thickness direction of the portion of the metal plate that becomes the linking portion can be reduced compared to the strength in the thickness direction of the other portions, thereby eliminating the inconvenience of winding and unwinding the chained terminal.

[0047] [4] A manufacturing apparatus (pressing apparatus 100) for a chain terminal according to the above item [1], The metal plate is a first metal plate (10S) for punching out the plurality of terminals (1); a second metal plate (20S) used as the linking portion (20P) and having a thickness thinner than that of the first metal plate, The linking portion processing portion (plate material joining means) is Before punching out the plurality of terminals from the first metal plate (10S), the second metal plate (20S) is welded to the first metal plate (10S). Manufacturing apparatus for chain terminals (press device 100).

[0048] According to the manufacturing apparatus having the configuration [4] above, the second metal plate used as the linking portion has a thickness thinner than the first metal plate for punching out the multiple terminals, and the second metal plate is welded to the first metal plate before the linking portion processing portion punches out the multiple terminals from the first metal plate, thereby eliminating inconveniences when winding and unwinding the chained terminals.

[0049] [5] A method for manufacturing a chained terminal, comprising the steps of: manufacturing a strip-shaped linking portion and a plurality of terminals linked via the linking portion from a metal plate, the method comprising the steps of: stamping a metal plate to form a plurality of terminals; The method includes a process for processing the metal plate so that the strength in the plate thickness direction of the portion that becomes the linking portion is reduced compared to the strength in the plate thickness direction of other portions. A method for manufacturing chain terminals.

[0050] According to the manufacturing method of the configuration [5] above, by reducing the strength in the thickness direction of the portion of the metal plate that will become the linking portion compared to the strength in the thickness direction of the other portions, it becomes possible to supply the terminals in a linked state to the subsequent process such as continuous plating. In addition, since winding without curling becomes possible, a process of correcting curling becomes unnecessary. [Explanation of symbols]

[0051] 1 Terminal 2 Joint 10 Chain section 12 Pilot hole (small hole) 13 small hole 15 Square hole 16 Hollow opening 17 V groove 20 Chain plate material 22 Convex 23 Convex 25 Square protrusion 10A, 10B chain part 10S 1st metal plate 20S 2nd metal plate 20P chain part 61~63 Laura 70 Roller set 100 Press equipment 110 Cutting or grinding equipment 131 Terminal formation part 132 Burring section (processing section) 133 Joint (Connection)

Claims

1. A chain terminal manufacturing apparatus for manufacturing a strip-shaped linking portion and a plurality of terminals linked via the linking portion from a metal plate, comprising: a terminal forming section that forms a plurality of terminals by punching a metal plate; A linking portion processing portion is provided in the metal plate so that the strength in the plate thickness direction of the portion that becomes the linking portion is reduced compared to the strength in the plate thickness direction of the other portion, The linking portion processing portion is A number of V-shaped grooves extending along a width direction of the linking portion are formed on a surface of the linking portion so as to be aligned in the longitudinal direction at intervals smaller than an interval between adjacent terminals in the longitudinal direction of the linking portion, and so that adjacent grooves in the longitudinal direction are connected to each other. Chain terminal manufacturing equipment.

2. A chain terminal manufacturing apparatus for manufacturing a strip-shaped linking portion and a plurality of terminals linked via the linking portion from a metal plate, comprising: a terminal forming section that forms a plurality of terminals by punching a metal plate; A linking portion processing portion is provided in the metal plate so that the strength in the plate thickness direction of the portion that becomes the linking portion is reduced compared to the strength in the plate thickness direction of the other portion, The metal plate is a first metal plate for punching out the plurality of terminals; a second metal plate used as the linking portion and having a thickness smaller than that of the first metal plate, The linking portion processing portion is welding the second metal plate to the first metal plate before punching the plurality of terminals from the first metal plate. Chain terminal manufacturing equipment.

3. A method for manufacturing a chain terminal, comprising the steps of: manufacturing a strip-shaped linking portion and a plurality of terminals linked via the linking portion from a metal plate, stamping a metal plate to form a plurality of terminals; and processing the metal plate so that the strength in the plate thickness direction of the portion that becomes the linking portion is reduced compared to the strength in the plate thickness direction of other portions, The processing step includes: A number of V-shaped grooves extending along a width direction of the linking portion are formed on a surface of the linking portion so as to be aligned in the longitudinal direction at intervals smaller than an interval between adjacent terminals in the longitudinal direction of the linking portion, and so that adjacent grooves in the longitudinal direction are connected to each other. A method for manufacturing chain terminals.

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