JP6383761B2 - Manufacturing method of pressed product carrier and pressed product carrier - Google Patents

Description

  The present invention, for example, intermittently feeds a metal strip having a connector terminal portion formed by press molding in a so-called progressive die, and cuts the metal strip to a predetermined length during the feeding, thereby The present invention relates to a method for manufacturing a press product transport carrier, in which formed press products are sequentially connected to a carrier member at a predetermined interval, and to a press product transport carrier. The present invention proposes a technique that can contribute to improvement of molding accuracy.

Conventionally, in manufacturing a connector made of a copper alloy or the like, a method as schematically shown in a plan view in FIG. 28 is sometimes used.
That is, according to this method shown in FIG. 28, first, the required pressing and plating processes are performed on a flat surface-like long metal plate intermittently fed in one direction in a progressive die. Then, a metal strip 100 as shown in FIG. In this metal strip 100, a plurality of connector terminal portions 102 extending from both of the side portions 101 toward the inside in the width direction of the metal strip 100 to face each other are provided on both side portions 101. They are densely arranged at narrow intervals in the longitudinal direction.

Next, as shown in FIG. 28B, for example, unnecessary connector terminal portions 102a are cut and removed, leaving a predetermined number of connector terminal portions 102b at a constant interval, and a predetermined number of these remaining connector terminal portions 102b. Are collectively referred to as a terminal row 103.
Thereafter, as shown in FIG. 28C, insert molding is performed for each terminal row 103 to seal the distal end side of the connector terminal portion 102 b with the resin material 104. Support metal fittings 105 are arranged at both ends in the direction, and the resin material 104 is pressed together with the sealed connector terminal portions 102b by the support metal fittings 105. Thereafter, the metal strip 100 is conveyed to a portion where the next process is performed.

  In such a manufacturing method, the process from press molding to insert molding is continuously performed in the same progressive die without changing the feeding mode of the metal strip 100. As shown in FIG. 28 (b), the connector terminal portion 102a, which becomes a hindrance when sealing the terminal row 103 composed of the predetermined number of connector terminal portions 102 with the material 104, is cut off as shown in FIG. As a result, there is a problem that the cut connector terminal portion 2a reduces the material yield.

With respect to this problem, Patent Document 1 states that “a method of insert-molding a connector terminal row in a part of a structure sequentially and sequentially by intermittent intermittent feed, in which a predetermined number of terminals are arranged at a predetermined pitch on one side of a substrate. Positioning holes are drilled at predetermined positions on the substrate in the terminal row connecting pieces arranged in parallel, while pilot holes are drilled in an inexpensive thin metal strip at the same time as this pilot hole position. A small protrusion at a predetermined position protrudes on one surface of the metal strip, the positioning hole is fitted into the small protrusion, and the terminal connecting pieces are sequentially separated along the longitudinal direction of the metal strip by caulking. A method of forming a structure having a connector terminal row in part, characterized in that the metal strip is used as a progressive carrier for connector terminals, and is connected to a predetermined position.
And, according to the method described in Patent Literature 1, “the use of expensive terminal members as waste materials is extremely reduced, cost savings can be achieved along with achievement of resource saving, and productivity can be improved efficiently. It can be done. "

Further, in Patent Document 2, “a metal strip formed with a plurality of connector terminal portions arranged in parallel along the longitudinal direction is intermittently sent along the longitudinal direction, The material is cut into a predetermined length, and each of the terminal row members obtained thereby is sequentially connected to the connecting member at a distance from each other to manufacture the band member with the terminal row. The member is fed to the front side of the cutting direction of the metal band member in the feeding direction of the metal band member, and the terminal row member formed by cutting at the position on the front side of the cutting part in the feeding direction is connected to the adjacent terminal. The manufacturing method of the strip | belt-shaped member with a terminal row | line | column connected with the said connection member arrange | positioned between row | line | column members is proposed.
In the method of Patent Document 2, “the terminal row member cut and formed from the metal strip and the connecting member are smoothly connected, so that the manufacturing efficiency can be increased, and the connecting Is performed with high accuracy, and the quality of the product can be greatly improved. ”,“ This method does not remove unnecessary terminal portions, so that the yield is not reduced. ” Yes.

Japanese Patent No. 3338667 JP, 2015-76244, A

By the way, in the manufacturing method as described above, when sending a “cheap thin metal strip” or “strip member with terminal row” as a press product carrier for carrying a press product such as a terminal row, Various amplitudes or vibrations from the progressive die to the pressed product carrier, such as vibration accompanying acceleration / deceleration, and damped vibration when a predetermined part of the pressed product carrier fits in a predetermined position in the resin mold A number of vibrations act. In particular, if the frequency of this vibration matches the natural frequency of the carrier, the carrier will resonate and flutter greatly, but if the carrier is sent by intermittent feeding at short time intervals in order to shorten the molding cycle, this carrier There was a problem that the fluttering did not stop and the accuracy of positioning of the terminal array member relative to the carrier was lowered.
The methods described in Patent Documents 1 and 2 cannot cope with this problem because the carrier is provided only with pilot holes for alignment and the like. In order to change the natural frequency, it may be possible to change the composition, full width, thickness, etc. of the carrier, but changing the carrier composition, etc. every time the connector terminal specification is changed requires labor and time. At the same time, the cost increases.

On the other hand, in the insert molding performed by supplying the resin material to the connector terminal portion continuously in the process after connecting the terminal row member to the carrier, the heat due to the resin molding is transmitted to the pressed product carrier, as described above. If the intermittent feeding time interval is increased to such an extent that the flapping of the carrier due to vibration can be suppressed, heat from resin molding tends to propagate to the terminal row on the carrier on the rear side in the feed direction where resin molding is performed thereafter. As a result, the terminal row thermally expands, and in this case, the accuracy cannot be denied.
Therefore, the shortening of the molding cycle and the improvement of the alignment accuracy of the connector terminal portion are contradictory, and the conventional technology cannot achieve both of them.

  The object of the present invention is to solve such problems of the prior art, and its purpose is to effectively utilize vibration and heat conduction to the carrier holding the pressed product in the continuous production of the pressed product. It is an object of the present invention to provide a method for manufacturing a pressed product transport carrier and a pressed product transport carrier that can reduce the molding cycle and contribute to improvement of molding accuracy.

  According to the method for manufacturing a pressed product carrier of the present invention, a metal strip formed by pressing is intermittently fed along the longitudinal direction of the metal strip, and the metal strip has a predetermined length in the middle of the feeding. By cutting into a metal strip, a pressed product is formed, and the sequentially formed pressed products are connected to a carrier member at a distance from each other, and a strip-shaped pressed product transport carrier that is continuous in one direction. A pilot hole and a slit penetrating the carrier member are formed in the carrier member at a predetermined cycle in the longitudinal direction.

In the manufacturing method of the present invention, in plan view, the area of the carrier member is S, the area of the pilot hole is P, and the area of the connection region between the carrier member and the press product is K in one period of the slit forming period. The slit area A preferably satisfies the relationship P ≦ A ≦ (S−P−K) × 0.60. In addition, a slit formation period means the area | region of one unit period in the slit provided periodically in the longitudinal direction of the carrier member.
Moreover, in the manufacturing method of this invention, it is preferable that the length of the slit in the width direction of a carrier member shall be 0.85 times or less of the width of a carrier member by planar view.

In the manufacturing method of this invention, it is preferable that at least one slit in the slit forming period of the carrier member has a rectangular shape extending in a direction inclined with respect to the longitudinal direction.
In the manufacturing method of the present invention, at least one slit in the slit forming period of the carrier member may be opened at a side portion of the carrier member.
In the manufacturing method of the present invention, at least one slit in the slit forming period of the carrier member may be terminated in the carrier member.

In the manufacturing method of the present invention, it is preferable that the carrier member is formed in a single strip shape, and the press products are connected to each other in the longitudinal direction of the strip-shaped carrier member.
Alternatively, in the manufacturing method of the present invention, a plurality of the carrier members are arranged between the press products adjacent to each other, the carrier members are sent between the press products, and each of the plurality of carrier members is provided. Thus, it is preferable to connect the press products adjacent to each other.
Alternatively, in the manufacturing method of the present invention, the carrier member has a length that allows a plurality of press products to be spaced apart from each other, and connects the plurality of press products to the carrier member. It is preferable that a plurality of the carrier members to which a plurality of press products are connected are connected to each other at the ends in the longitudinal direction of the carrier members.

In the manufacturing method of the present invention, a plurality of connector terminal portions extending in parallel with each other are formed on the metal strip, and the press product is a terminal row member having a plurality of connector terminal portions extending in parallel with each other. It is particularly preferred to do this.
In this case, it is possible to perform insert molding in which the connector terminal portion of the terminal row member of the pressed product carrier is sealed with a resin material.

  The pressed product carrier of the present invention includes a plurality of pressed products formed by pressing, and a carrier member that holds the pressed products by connecting the pressed products with a space therebetween, in one direction. In the continuous strip shape, pilot holes and slits penetrating the carrier member are formed in the carrier member at a predetermined cycle in the longitudinal direction.

The pressed product transport carrier of the present invention has a carrier member area S, a pilot hole area P, and a connecting region area between the carrier member and the pressed product K in a plan view in a slit forming cycle. Then, it is preferable that the area A of the slit satisfies the relationship P ≦ A ≦ (S−P−K) × 0.60.
Moreover, it is preferable that the length of the slit in the width direction of a carrier member is 0.85 times or less of the width of a carrier member in the press goods conveyance carrier of this invention by planar view.

In the pressed product transport carrier of this invention, it is preferable that at least one slit in the slit forming period of the carrier member has a rectangular shape extending in a direction inclined with respect to the longitudinal direction.
Moreover, in the press goods conveyance carrier of this invention, the at least 1 slit within the slit formation period of the said carrier member shall open to the side part of a carrier member.
Moreover, in the pressed product transport carrier of the present invention, at least one slit within the slit forming period of the carrier member may be terminated in the carrier member.

The pressed product transport carrier of the present invention is preferably formed by connecting a plurality of pressed products to the strip-shaped carrier member at intervals in the longitudinal direction.
Alternatively, in the pressed product transport carrier of the present invention, it is preferable that each of the plurality of carrier members is disposed between the pressed products adjacent to each other and connected to the pressed products.

In the pressed product carrier according to the present invention, the pressed product is preferably a plurality of terminal row members having a plurality of connector terminal portions extending in parallel with each other.
In this case, it is preferable that the connector terminal portion of the terminal row member is sealed with a resin material.

  According to this invention, by providing not only pilot holes but also slits in the carrier member, it is possible to change the form of the slits based on simulation results and the like according to the specifications of the pressed product such as connector terminals. Thus, the slit functions to prevent resonance by changing the natural frequency of the pressed product transport carrier, and also functions to suppress transmission of heat due to resin molding to the rear side in the feed direction. As a result, it is possible to increase the molding accuracy such as the terminal position while shortening the molding cycle.

It is a top view which shows the manufacturing method of the press goods conveyance carrier which concerns on one Embodiment of this invention. It is a top view which shows the press goods conveyance carrier of FIG. It is the top view of the carrier member which shows the slit provided in the carrier member of the press goods conveyance carrier of FIG. 1, and its modification. It is a top view of a carrier member which shows the further modification of the slit which can be provided in the carrier member of the press goods conveyance carrier of FIG. It is a top view which shows the manufacturing method of the press goods conveyance carrier which concerns on other embodiment of this invention. It is an enlarged plan view which shows the press goods conveyance carrier of FIG. It is a top view which shows the carrier member which can be used for the manufacturing method of the press goods conveyance carrier which concerns on other embodiment of this invention, and the press goods conveyance carrier formed by connecting a some terminal row member to the said carrier member. is there. It is a top view which shows strips af of the analysis model of an Example. It is a top view which shows the rigidity analysis method of an Example. It is a graph which shows the rigidity analysis result of an Example. It is a graph which shows the result of the natural vibration analysis of an Example. It is a graph which shows the result of the natural vibration analysis of an Example. It is a side view of the strip which shows the resonance analysis method of the transient response of an Example. It is a graph which shows the resonance analysis result of the transient response of an Example. It is a graph which shows the resonance analysis result of the transient response of an Example. It is a top view which shows the resonance analysis method of the frequency response of an Example. It is a graph which shows the resonance analysis method result of the frequency response of an Example. It is a graph which shows the resonance analysis method result of the frequency response of an Example. It is the top view and side view of a strip which show the method of the drop impact analysis of an Example. It is a graph which shows the result of the drop impact analysis of an Example. It is a graph which shows the result of the drop impact analysis of an Example. It is a top view which shows the method of the heat transfer analysis of an Example. It is a graph which shows the result of the heat-transfer analysis of an Example. It is a graph which shows the result of the heat-transfer analysis of an Example. It is a graph which shows the result of the heat-transfer analysis of an Example. It is a graph which shows the result of the heat-transfer analysis of an Example. It is a graph which shows the result of the heat-transfer analysis of an Example. It is a top view which shows the conventional manufacturing method.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Here, a detailed description will be given of an example in which a press product formed by pressing is a terminal array member in which a plurality of connector terminal portions extending in parallel to each other is formed. The present invention can also be applied to electronic parts and other parts.

In FIG. 1, reference numeral 1 in FIG. 1 denotes a number of connectors that, for example, press a flat plate-like long strip-shaped metal plate in the preceding process and extend in parallel to each other in parallel in the longitudinal direction. Terminal portions 1a are formed, and metal strips that are plated as necessary are shown on the connector terminal portions 1a.
The metal strip 1 is intermittently fed at a predetermined pitch, for example, by a wire tension or a conveyor belt or the like along the vertical direction as indicated by an arrow in FIG.

In the middle of intermittent feeding, the metal strip 1 is cut into a predetermined length including a predetermined number of connector terminal portions 1a as indicated by a broken line CL in FIG. The terminal row member 2 having the terminal portion 1a is sequentially formed.
In the embodiment shown in FIG. 1, the terminal row member 2 thus obtained is fixed to the side of a strip-like metal carrier member 3 which is adjacent to the metal strip 1 and is intermittently fed in parallel therewith. These are mechanically connected to each other so that they are sequentially attached at predetermined intervals.

  By such a method, as shown in FIG. 2, a plurality of terminal row members 2 having a plurality of connector terminal portions 1a extending in parallel with each other and the terminal row members 2 are connected to each other with a space therebetween. It is possible to manufacture a strip-shaped pressed product carrier 4 that includes a carrier member 3 that holds the member 2 and that is continuous in one direction. The pressed product carrier 4 is formed by connecting a plurality of terminal array members 2 to a single strip-shaped carrier member 3 at intervals in the longitudinal direction.

  After that, as shown in FIG. 1, the pressed product carrier 4 is insert-molded with respect to the connector terminal portion 1 a of the terminal row member 2, and the connector terminal portion 1 a is sealed with the resin material 5. The terminal row member 2 in which the connector terminal portion 1 a is sealed with the resin material 5 is removed from the carrier member 3.

  The terminal row member 2 and the carrier member 3 can be connected by various methods such as welding or using an adhesive, but may be mechanically connected by caulking or the like. Convenient.

  Here, in this embodiment, the strip-shaped long carrier member 3 is provided with pilot holes 6 and slits 7 penetrating from the front surface to the back surface of the carrier member 3. They are formed in a predetermined cycle at regular intervals in the longitudinal direction. Such pilot holes 6 and slits 7 are formed by pressing or other processes such as drilling holes in the carrier member 3 in a step prior to the connection of the terminal row member 2 to the carrier member 3, although details are not shown. can do.

  Here, the pilot hole 6 formed in the carrier member 3 is used to improve the dimensional accuracy of press working or resin molding performed while intermittently feeding the carrier member 3. In the example shown in the figure, the pilot hole 6 is a perfect circle in plan view, but it may be an oblong or elliptical hole with a little play, or a long pilot hole.

  On the other hand, the slit 7 formed in the carrier member 3 functions to suppress the vibration acting on the pressed product carrier 4 and to suppress the heat transfer by the insert molding. This point is described in detail as follows.

  That is, when feeding the carrier member 3 or the pressed product carrying carrier 4, for example, when accelerating or decelerating the feeding speed, the carrier member 3 or the pressed product carrying carrier 4 is vibrated. When a predetermined portion including the connector terminal portion 1a to be molded is located in the resin molding die, vibration is attenuated. Such vibration is caused by positioning of the terminal row member 2 to the carrier member 3. It causes a decrease in accuracy. In particular, when the vibration transmitted from the progressive die or the like has the same frequency as the natural frequency of the carrier member 3, the carrier member 3 resonates, and the positioning accuracy is greatly reduced. When high-speed manufacturing is performed in order to shorten the molding cycle, the fluttering of the carrier member 3 increases and becomes remarkable.

  Further, when insert molding is performed to seal the connector terminal portion 1a with the resin material 5, heat from the molten resin is transmitted to the carrier member 3, but the carrier member 3 is used for the purpose of improving the positioning accuracy described above. If the intermittent feeding time interval is set long enough to eliminate the fluttering, the heat transmitted to the carrier member 3 by the resin molding die is easily transmitted to the rear side in the feeding direction. In this case, since the terminal row member 2 on the carrier member 3 to be resin-molded thereafter thermally expands and the position of each connector terminal varies, such heat transfer also reduces the accuracy.

  In order to deal with the problem of vibration and heat, in this embodiment, the slit 7 is provided in the carrier member 3 at a constant period, so that the slit 7 vibrates by changing the natural frequency of the carrier member 3, for example. In addition, since the carrier member 3 is partially interrupted in the width direction, heat transfer can also be suppressed. As a result, the damping of the vibration occurs quickly, and the time required for the fluttering of the pressed product transport carrier 4 in the resin molding die to be reduced is shortened, so that the molding cycle can be shortened. By equalizing the temperature of the terminal array member 2, it is possible to suppress thermal expansion that causes variations in the position of the connector terminals when the resin material 5 is hardened and to greatly increase the molding accuracy. Therefore, the slit 7 is functionally different from the pilot hole 6.

  The slits 7 provided in the carrier member 3 are formed according to the specification or shape of the connector terminal portion 1a, for example, based on the results of vibration analysis, heat conduction analysis, or other simulations of the carrier member 3; Dimensions such as size can be determined. This eliminates the need to change the dimensions of the carrier member 3 and the overall width and thickness of the carrier member 3 to suppress vibrations, etc., so that the dimensions of the pressed product transport carrier 4 are not required. The accuracy can be improved.

However, in one slit formation cycle Cs, the area A of the slit 7 is related to the area S of the carrier member 3, the area P of the pilot hole, and the area K of the connection region between the carrier member 3 and the terminal array member 2. In this case, it is preferable that P ≦ A ≦ (S−P−K) × 0.60. Here, the area K of the connection region between the carrier member 3 and the terminal row member 2 means the area of the portion where the carrier member 3 and the terminal row member 2 are connected, for example, the carrier member 3 and the terminal row member. 2 is connected to the carrier member 3 and the terminal row member 2 in the area where the carrier member 3 and the terminal row member 2 are overlapped.
Further, in plan view, the length of the slit 7 along the width direction of the carrier member 3 is set to 0.85 times or less of the width of the carrier member 3.
Thereby, while being able to exhibit the effect of vibration resistance and heat expansion effectively, unintentional deformation | transformation of the carrier member 3 at the time of conveyance by formation of the slit 7 can be prevented.
Here, the area ratio of the pilot hole 6 and the slit 7 is per unit length of the carrier member 3 in a plan view of the carrier member 3, and the area of the pilot hole 6 and the slit 7 is divided by the area of the carrier member 3. This is expressed as a percentage.

  Further, the length of the slit 7 in the width direction of the carrier member 3 is preferably 0.85 times or less the width of the carrier member 3 in plan view. When the length of the slit 7 is longer than 0.85 times the width of the carrier member 3, there is a concern that the carrier member 3 is deformed during conveyance. On the other hand, the lower limit of the length of the slit 7 is not provided, but as can be understood from the calculation results described in the examples below, if the material, thickness, and width of the carrier member 3 are different, depending on the natural frequency, This is because the effect is different even in the same form of slit. It is technically meaningless to set a certain lower limit for all materials, thicknesses, and widths, so it is desirable to determine the optimum range as appropriate by performing calculations or tests.

  In the embodiment shown in FIGS. 1 and 2, as shown only in the carrier member 3 in FIG. 3A, the slit 7 extends the terminal row member 2 of the carrier member 3 from approximately the center in the width direction of the carrier member 3. 3 (b) to 3 (e), which extend toward the other side portion Sb opposite to the one side portion Sa to be connected and form a rectangular shape that opens to the other side portion. It is also possible to change the shape as shown in FIGS.

In the modification shown in FIG. 3B, the rectangular slits 7b and 7a that open and extend to one side Sa and the other side Sb are alternately arranged in the longitudinal direction of the carrier member 3, etc. It is provided at intervals. This modification is expected to have an effect of extending the vibration or heat transfer path.
In FIG. 3 (c), the rectangular slits 7d and 7c that open and extend to one of the side portions Sa and the other side portion Sb are arranged so as to oppose each other in the longitudinal direction of the carrier member 3. These are periodically provided in the longitudinal direction. In this case, it is considered that only the component synchronized with the counter period passes.

As shown in FIG. 3D, the slit 7e extends along the width direction in the center region in the width direction of the carrier member 3, and does not open to one of the side portions Sa and the other side portion Sb. A rectangular shape terminating in the carrier member 3 is formed. The effect of ensuring the rigidity of the carrier member 3 and preventing meandering can be expected.
In FIG. 3 (e), a rectangular slit 7f that extends from approximately the center in the width direction of the carrier member 3 and opens to the other side Sb, and a rectangular shape that is shorter than the slit 7f that similarly opens to the other side Sb. The slits 7g and the rectangular slits 7h shorter than the slits 7g that open to the other side portion Sb are arranged side by side in the longitudinal direction, and these three types of slits 7f to 7h having different lengths are arranged in the longitudinal direction. Periodically in the direction. This is presumed to be highly effective in preventing resonance.

The slits 7A and 7B shown in FIG. 4A are rectangular ones that open to one of the side portions Sa and the other side portion Sb, respectively, and between the slits in the adjacent slit formation cycle Cs. The distance between the slits 7 </ b> A and 7 </ b> B is provided between the slits 7 </ b> A and 7 </ b> B. Due to this narrowed portion between the slits 7A and 7B, a filter effect can be expected.
The slits 7A and 7B shown in FIG. 4A are configured to slightly overlap each other in the width direction in the center region in the width direction of the carrier member 3.

  In FIG. 4B, the distance in the longitudinal direction is closer than the distance in the longitudinal direction between the adjacent slit forming periods Cs, and it extends in the width direction and opens in the other side Sb. By providing the pair of rectangular slits 7C and 7D, it is expected that vibration energy is diverged as sound wave energy by the so-called tuning fork effect.

In FIG. 4C, a triangular slit 7E is provided instead of the rectangular slit as described above. More specifically, the slit 7E has a right triangle shape, and is open to the other side portion Sb on one side of two sides sandwiching the right angle. It is also possible to use a polygonal shape other than a triangle or a rectangle, a wedge shape, an arc shape, or the like. In the case where the slits are provided on both side portions, it is possible to form slits having different shapes on the side portions.
The slits 7F and 7G in FIG. 4 (d) have substantially the same configuration as the slits 7A and 7B shown in FIG. 4 (a) except that they are inclined with respect to the width direction of the carrier member 3. In the carrier member 3 provided with the slits 7F and 7G, for example, a traveling wave traveling in the right direction in the figure cannot be propagated unless it is reversed between the slits 7F and 7G.

4E, in addition to the slits 7H and 7I having substantially the same form as that shown in FIG. 3C, the width direction of the carrier member 3 is positioned adjacent to the slits 7H and 7I. Is provided with a slit 7J extending in the central region and terminating in the carrier member 3, and in the constricted portion surrounded by the slits 7H to 7J, an effect of canceling waves propagating from both sides of the slit 7J is expected. Is done.
All of the rectangular slits described above extend in a direction inclined at 90 ° or another angle with respect to the longitudinal direction of the carrier member 3. However, a slit extending along the longitudinal direction without being inclined with respect to the longitudinal direction is also conceivable.

In FIG. 5, other embodiment of the manufacturing method of the press goods conveyance carrier of this invention is shown with a top view.
In the embodiment shown in FIG. 5, the metal strip 11 formed with a plurality of connector terminal portions 11a extending in parallel with each other is intermittently fed at a predetermined pitch by a predetermined conveying means in, for example, a progressive die. In the middle of the feeding, the metal strip 11 is cut in the width direction (left and right in FIG. 5) at a predetermined length including the required number of connector terminal portions 11a at the cutting portion Cp provided with a cutter or the like. Each of the terminal row members 12 obtained by cutting the strip members 13a is cut at a predetermined distance from each other, for example, by stripping the strip members 13a conveyed from both sides to a predetermined length. The carrier member 13 is sequentially connected.

And the press goods conveyance carrier 14 obtained by connecting the terminal row | line | column member 12 and the carrier member 13 is conveyed in the same direction as the metal strip 11, for example on a straight line by planar view.
Then, although illustration is abbreviate | omitted, insert molding which seals the connector terminal part 11a of the press goods conveyance carrier 14 with a resin material is performed.

  In addition, here, the metal strip 11 is formed from a pair of side portions 11b which are arranged in the width direction of the metal strip 11 at intervals from each other and extend in the longitudinal direction, and the side portions 11b by the press process in the previous step. , And a plurality of connector terminal portions 11 a extending in the opposite direction toward the inner side in the width direction of the metal strip 11.

  The pressed product carrier 14 manufactured by this method has a configuration in which each of the plurality of carrier members 13 is arranged between the terminal row members 12 adjacent to each other and connects the terminal row members 12. .

  In the embodiment shown in FIG. 5 as well, the carrier member 13 is provided with a pilot hole 16 and a slit 17 penetrating the carrier member 13 as shown in FIG. Each of the pilot hole 16 and the slit 17 functions in the same manner as in the above-described embodiment, and the form thereof can be changed as necessary.

FIG. 7 is a plan view showing still another embodiment of the method for manufacturing a pressed product carrier according to the present invention.
In this embodiment, as shown in FIG. 7A, the carrier member 23 has a length Lc that allows a plurality of terminal row members 22 to be arranged at intervals.

  In the method of FIG. 7, a plurality of terminal row members 22 are connected to the carrier member 23, and the carrier members 23 connected to the plurality of terminal row members 22 are sequentially formed. Then, as shown in FIG. 7B, the plurality of carrier members 23 are connected to each other by caulking or the like, for example, by a carrier connecting member 28 at an end portion in the longitudinal direction.

  In the embodiment shown in FIG. 7, the length Lc of the carrier member 23 can be a length that can hold the number of terminal row members 22 that can be sealed with a resin material by a single insert molding. The number of terminal row members 22 held per carrier member 23 can be set to 20, for example.

  Here, the carrier member 23 to which the plurality of terminal row members 22 are connected, that is, the carrier member 23 with the terminal row members 22 in a state before the carrier members 23 are connected to each other by the carrier connecting member 23 or the like is pressed. As the carrier carrier 24, this pressed product carrier 24 has a predetermined length Lc, like the carrier member 23.

  Also in the embodiment as shown in FIG. 7, the pilot hole 26 and the slit 27 that can function in the same manner as the above-described embodiment are provided, and the slit 27 effectively works for suppressing vibration and heat transfer.

  Next, an analysis for confirming the effect of the present invention was performed, which will be described below. However, the description here is for illustrative purposes only and is not intended to be limiting.

(Analysis model, calculation conditions)
For the analysis, nonlinear structural analysis software (LS-DYNA manufactured by JSOL Corporation) was used.
The analysis model was strips a to f representing carrier members as shown in FIG. In these strips a to f, the presence or absence of slits and the arrangement of slits are changed as shown in the figure. The characteristics of the model are as shown in Table 1.
As calculation conditions, a three-dimensional shell element was used, the shape was a surface but the thickness was calculated, and the integration was complete integration and 5-point integration in the thickness direction.

(Rigidity analysis)
As shown in FIG. 9, the rigidity analysis is performed by applying a load (F) in the Z-axis direction to point B with the displacement and rotation of the left end node in the figure constrained, as shown in FIG. The displacement (d) in the Z-axis direction was calculated and the spring multiplier (k) was evaluated. The result of the rigidity analysis in each strip ae is shown in a graph in FIG.
As shown in FIG. 10, the rigidity is reduced by providing the slit, and the rigidity is reduced in the strips d and e which are narrower than the strips b and c having a wide slit interval. It can be seen that the strips c and e provided in a staggered manner on both sides are lower than the strips b and d provided on the plate.

(Natural frequency analysis)
As shown in FIG. 9, the natural frequency analysis was performed by calculating the natural frequency in a state where the displacement and rotation of the left end node in the figure were constrained. The result is shown in FIG.
From the results shown in FIG. 11, it can be seen that the natural frequency changes by providing the slit in a predetermined form. Therefore, for example, when the frequency of the device is 400 Hz, resonance occurs in the strip a, but resonance can be avoided in the strips b to d. The strip e resonates at 400 Hz. However, if only the slit form (shape, etc.) is changed to another form, resonance can be avoided. However, in the conventional strip a in which no slit is provided, as described in the item of the problem to be solved by the invention, the composition, the entire width, the thickness, and the like of the carrier are changed, which requires labor and time and increases the cost. It is clear to invite.
Of these, the relationship between the natural frequency of the secondary mode and the spring constant is shown in a graph in FIG. From FIG. 12, it can be seen that providing the slit reduces the rigidity and also reduces the natural frequency of the same mode.

(Resonance analysis)
As shown in FIG. 13, the resonance analysis of the transient response was performed by forcibly displacing the fixed end of the strip up and down. The attenuation coefficient was 0.2. The sine wave input to the fixed end had a frequency of 75.00 Hz and an amplitude of 0.020 mm. The results are shown in FIG. 14 and FIG.
From FIG. 14 and FIG. 15, it can be seen that in this input sine wave, resonance occurs in the strip a without slit, but resonance does not occur in the strips b to e with slit. In addition, in the place shown in FIG. 14, the result of the displacement of the strip e overlapped with the displacement of the input sine wave.

As shown in FIG. 16, the resonance analysis of the frequency response was performed by inputting a sine wave at the excitation point A and obtaining the speed / load, acceleration / load, and amplitude generated at the response output point B. The attenuation coefficient was 0.001. FIG. 17 and FIG. 18 show the results of speed and acceleration in different frequency regions in the strips a to e, respectively.
From FIG. 17 and FIG. 18, it can be seen that by providing the slit, the amplitude of a specific frequency band is reduced, and it is considered that resonance can be reduced.

(Drop impact analysis)
As shown in FIG. 19, the transient impact drop impact analysis is performed by giving an initial velocity of 443 mm / s in the Z-axis direction to the entire model with the left end fixed, and observing the vibration at point B thereafter. went. In addition, this initial speed assumes the landing speed when it falls from the height of 10 mm. The attenuation coefficient was 0.2.

As can be seen from the analysis results shown in FIG. 20, in the displacement amplitude, the amplitude of the strip e with slits increased, and free vibration occurred at the primary natural frequency. This is because the displacement amplitude increases because the deformation with respect to the drop impact force increases as the rigidity decreases.
Further, the velocity amplitude was not particularly different between the two, but in the acceleration amplitude, the amplitude of the strip a having no slit was increased. This is because the acceleration amplitude decreases because the natural frequency is smaller as the rigidity is lower. It can also be seen from FIG. 21 that the acceleration amplitude is reduced by providing the slit. From this result, it is presumed that the inertial force to the press product to be mounted on the carrier member is reduced by the arrangement of the slit.

(Heat transfer analysis)
As shown in FIG. 22, the heat transfer analysis assumes that the temperature of the node at the left end edge is 100 ° C. and the temperature of the nodes other than the left end is 20 ° C., so that no heat transfer from the surface to the atmosphere occurs. Thus, the temperature at the center in the width direction of the points A to D was output after a predetermined time had elapsed.
For each of the strips d, e, and f, when the relationship between the distance from the heating end and the temperature is represented by a graph, it can be seen that the temperature changes abruptly at the slit placement position as shown in FIG. Therefore, it was found that the slit acts as a thermal resistance.

For each of the strips a to f, the change in temperature with the passage of time at each point is shown in FIGS. Here, the elongation W _n, the thermal expansion coefficient ^{α (= 1.99 × 10 -5)} , the initial temperature T ₀ (° C.), the temperature T _n of each point (° C.), wherein: W _n = α × ( T _n -T ₀₎ was calculated from.
At each point, the maximum temperature difference and the maximum thermal expansion difference between the strip a and the strip f are as shown in Table 2. The maximum temperature difference and the maximum thermal expansion between the strip a and the strip f after 7 seconds have elapsed. The difference was as shown in Table 3.

  From the above heat transfer analysis, the heat transfer resistance is larger when the gap between the slits is wider than when the gap is wide, and the slits are provided in a staggered pattern on both sides rather than the slit provided only on one side. It was found that the larger one was larger and the one with the staggered spacing narrower was larger.

1, 11, 21 Metal strip 1a, 11a, 21a Connector terminal part 2, 12, 22 Terminal row member (press product)
3, 13, 23 Carrier member 13a Strip member 4, 14, 24 Pressed product carrier 5 Resin material 6, 16, 26 Pilot hole 7, 7a-7h, 7A-7I, 17, 27 Slit 28 Carrier connecting member Sa Carrier member One side portion Sb The other side portion of the carrier member Cs Slit formation period Cp Cutting portion Lc Length of the carrier member 23

Claims (21)

The metal strip formed by press working is intermittently sent along the longitudinal direction of the metal strip, and the metal strip is cut into a predetermined length in the middle of the feeding, thereby pressing the metal strip from the metal strip. A method of manufacturing a strip-shaped press product transport carrier that is formed and sequentially connected to a carrier member at an interval from each other and formed into a strip-shaped press product transport carrier.
The manufacturing method of the press goods conveyance carrier which forms the pilot hole and slit which penetrate a carrier member in the said carrier member with a predetermined period in a longitudinal direction.   In a plan view, when the area of the carrier member is S, the area of the pilot hole is P, and the area of the connection region between the carrier member and the press product is K, the slit area A The manufacturing method of the press goods conveyance carrier of Claim 1 which satisfy | fills the relationship of P <= A <= (SPK) * 0.60.   The manufacturing method of the press goods conveyance carrier of Claim 1 or 2 which makes the length of the slit in the width direction of a carrier member 0.85 times or less of the width of a carrier member by planar view.   The manufacture of the press goods conveyance carrier as described in any one of Claims 1-3 which makes the rectangular shape in which at least 1 slit in the slit formation period of the said carrier member extends in the direction which inclines with respect to a longitudinal direction. Method.   The manufacturing method of the press goods conveyance carrier as described in any one of Claims 1-4 with which the at least 1 slit in the slit formation period of the said carrier member opens in the side part of a carrier member.   The manufacturing method of the press goods conveyance carrier as described in any one of Claims 1-5 in which at least 1 slit in the slit formation period of the said carrier member terminates in a carrier member.   The press product according to any one of claims 1 to 6, wherein the carrier member is formed into a single strip shape, and the press product is connected at intervals in the longitudinal direction of the strip-shaped carrier member. A manufacturing method of a conveyance carrier.   A plurality of the carrier members are arranged between the pressed products adjacent to each other, the carrier members are fed between the pressed products, and the adjacent pressed products are connected with each of the plurality of carrier members. The manufacturing method of the press goods conveyance carrier as described in any one of Claims 1-6.   The carrier member has a length that allows a plurality of press products to be spaced apart from each other, and the plurality of press products are connected to the carrier member, and the plurality of press products are connected. The manufacturing method of the press goods conveyance carrier as described in any one of Claims 1-6 which connects the some of the said carrier member mutually with the edge part of the longitudinal direction of this carrier member.   A plurality of connector terminal portions extending in parallel to each other are formed on the metal strip, and the press product is a terminal row member having a plurality of connector terminal portions extending in parallel to each other. The manufacturing method of the press goods conveyance carrier as described in one.   The manufacturing method of the press goods conveyance carrier of Claim 10 which performs insert molding which seals the connector terminal part of the terminal row | line | column member of a press goods conveyance carrier with a resin material. A strip-shaped press product carrier comprising a plurality of press products formed by press working and a carrier member that holds the press products by connecting the press products at a distance from each other. And
A pressed product transport carrier in which pilot holes and slits penetrating the carrier member are formed in the carrier member at a predetermined cycle in the longitudinal direction.   In a plan view, when the area of the carrier member is S, the area of the pilot hole is P, and the area of the connection region between the carrier member and the press product is K, the slit area A The press goods conveyance carrier of Claim 12 which satisfy | fills the relationship of P <= A <= (SPK) * 0.60.   14. The pressed product transport carrier according to claim 12, wherein the length of the slit in the width direction of the carrier member is 0.85 times or less of the width of the carrier member in plan view.   The press goods conveyance carrier as described in any one of Claims 12-14 in which the at least 1 slit in the slit formation period of the said carrier member makes the rectangular shape extended in the direction which inclines with respect to a longitudinal direction.   The press product conveyance carrier according to any one of claims 12 to 15, wherein at least one slit in the slit forming period of the carrier member is opened at a side portion of the carrier member.   The pressed article conveyance carrier according to any one of claims 12 to 16, wherein at least one slit in the slit forming period of the carrier member terminates in the carrier member.   The pressed product transport carrier according to any one of claims 12 to 17, wherein a plurality of pressed products are connected to a single strip-shaped carrier member at intervals in the longitudinal direction.   Each of a some carrier member is arrange | positioned between mutually adjacent press goods, The press goods conveyance carrier as described in any one of Claims 12-17 formed by connecting those press goods.   The pressed product transport carrier according to any one of claims 12 to 19, wherein the pressed product is a plurality of terminal row members having a plurality of connector terminal portions extending in parallel with each other.   21. The pressed product carrier according to claim 20, wherein the connector terminal portion of the terminal row member is sealed with a resin material.