JP2006120423A - Applicator for terminal crimping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an applicator for terminal crimping which can crimp a terminal, while keeping appropriate position of a crimping terminal to a wire, while preventing bending of the crimping terminal. <P>SOLUTION: A lower unit 8 comprises a base 28 with an anvil 10, a holding member 36 for holding it, a cut-off part 44 which is supported slidably with a cutoff part 46 which holds a carrier plate connected to a crimping terminal 100 and an elastic device 45 which biases it upwardly. The elastic device 45 includes a first coil spring 45a having small spring constant, and a second coil spring 45b having large spring constant. An upper unit 7 comprises a pressing member 9, which crushes the crimping terminal 100 with the anvil 10, a holding member 14 which holds the pressing member 9, a cut-off part pressing member 24 which is held slidably, and an elastic device 25 which biases it downwardly. The spring constant of elastic device 25 is larger than that of the first coil spring 45a and is smaller than that of the second coil spring 45b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a terminal crimping applicator, and in particular, the crimping terminal is crushed by the cooperation of an anvil formed on the upper surface of a base and a pressing member, and the crimping terminal is separated from a plate-like carrier. The present invention relates to an applicator for crimping a terminal.

  Conventionally, as a terminal crimping device equipped with a terminal crimping applicator, it is attached to a standing column member, an elevating member disposed on the upper side of the column member and moving up and down by a power mechanism, and a lower end of the elevating member. And a base having a concave anvil formed on the upper surface thereof is known. According to this, when the pressing member moves downward by the power mechanism, the crimp terminal is crushed between the tip of the pressing member and the concave anvil.

  The crimp terminals are connected in series by a plate-like carrier, and are sequentially fed onto the anvil of the base by a terminal transport mechanism. The terminal transport mechanism is controlled so as to interlock with the operation of the pressing member, and each time the crimp terminal is crushed and the pressing member is displaced from the bottom dead center to the top dead center, the carrier is moved in a predetermined direction by the locking claw portion. The crimp terminals are sequentially fed onto the anvil.

  As shown in FIG. 8, the crimp terminal 100 is formed so as to protrude from the edge of the carrier 101, and the first crimp part 102 to be crimped to the coating material of the electric wire, and the core wire on the tip side from which the coating material has been removed. A second crimping portion 103 to be crimped to the connector, and a connector portion 104 for connection. Further, the first crimping part 102 and the second crimping part 103 are connected by the first connection part 105, and the second crimping part 103 and the connector part 104 are connected by the second connection part 106, so that the entire crimping terminal 100 is provided. Are integrally formed.

  As such a pressing member and anvil for crushing the crimp terminal 100, for example, as shown in FIG. 9, a first pressing member 108 and a first anvil 109 disposed at positions facing the first crimping portion 102, The second pressing member 110 and the second anvil 111 are arranged at positions facing the second crimping portion 103, and the first pressing member 108 and the second pressing member 110 are the holding members 113 of the upper unit 112. The two bases 114 and 115 on which the first anvil 109 and the second anvil 111 are formed are fixed to the holding member 117 of the lower unit 116.

  Further, the holding member 117 of the lower unit 116 supports a cutting part 118 for separating the crimp terminal 100 on the first anvil 109 and the second anvil 111 from the carrier 101 so as to be slidable in the vertical direction. The cutting portion 118 is biased upward by an elastic member 119 such as a coil spring provided below the cutting portion 118. On the upper side of the cutting part 118, particularly at a position higher than the first anvil 109, a groove-shaped clamping part 120 that is open toward the base 114 side is formed, and the plate to which the crimp terminal 100 is connected It is possible to support in a state where the carrier 101 is sandwiched. For this reason, when the cutting part 118 is slid downward with the carrier 101 sandwiched between the sandwiching parts 120, the first crimping part 102 and the second crimping part 103 of the crimping terminal 100 first become the first anvil 109 and the first crimping part. When placed on the second anvil 111 and the cutting portion 118 is further slid downward, a shearing force is generated between the corner of the sandwiching portion 120 and the upper corner of the first anvil 109, and the first anvil. The crimp terminal 100 on 109 is separated from the carrier 101.

  In addition, the holding member 113 of the upper unit 112 is provided with a cutting portion pressing member 121 that is lowered together with the pressing members 108 and 110 during the crushing operation and presses the upper surface of the cutting portion 118 so as to protrude downward. A shearing force is generated using the crushing pressure generated by the lowering of the unit 112.

  The above prior art is naturally performed by those skilled in the art, and the applicant is not aware of a document describing the prior art.

  However, according to the conventional terminal crimping applicator, the pressing members 108 and 110 for crushing the crimping terminal 100 and the cutting portion pressing member 121 for pressing and lowering the cutting portion 118 are both the upper unit 112. Further, in the lower unit 116, the holding unit 120 is attached upward by the elastic member 119 so that the position of the holding part 120 formed in the cutting part 118 is higher than the upper surface of the first anvil 109. Therefore, the cutting timing during the crushing operation has to be set with extremely high accuracy, and the labor for adjustment work has become extremely large.

  More specifically, when the crushing operation is started before the cutting portion 118 is pressed down, there is a difference in height between the sandwiching portion 120 and the first anvil 109. As shown by the two-dot chain line, the crushing operation is performed in a state where the crimp terminal 100 is bent obliquely downward with respect to the carrier 101. When the crushing operation is performed in such a state, the crimping of the crimp terminal 100 to the electric wire L becomes incomplete, or the relative position between the electric wire L and the crimp terminal 100 is crimped in an inappropriate state. Therefore, there is a concern that the quality deteriorates. In addition, if the initial position of the clamping part 120 is made to correspond to the height of the upper surface of the first anvil 109, the above-mentioned problem is solved, but according to this, the crimp terminal 100 connected to the carrier 101 is concave. When it is fed onto the anvils 109 and 111, a part of the crimp terminal 100 easily collides with the bases 114 and 115, and as a result, it is difficult to feed the crimp terminal 100.

  On the other hand, when the crimp terminal 100 is crushed earlier, or when the crimp terminal 100 is not fixed to the wire L, the cutting portion 118 is pressed down and the crimp terminal 100 is transferred to the carrier by the cutting portion 118. When separated from 101, the crimp terminal 100 cannot be held, and there is a possibility that the crimp terminal 100 may be scattered without being crimped, or the relative position between the crimp terminal 100 and the wire L may be shifted.

  Therefore, in view of the above situation, the present invention prevents the crimp terminal from bending downward without forcing a highly accurate adjustment operation, and crushes while maintaining the position of the crimp terminal with respect to the electric wire properly. It is an object of the present invention to provide a terminal crimping applicator that can be used.

The applicator for terminal crimping according to the present invention supports "a base having an anvil formed on the upper surface, a first holding member for holding the base, and a plate-like carrier connected to the crimp terminal. A groove-shaped sandwiching portion is formed at a height above the anvil, and is slidably supported with respect to the first holding member. By sliding downward, the corner portion of the sandwiching portion and the anvil A cutting portion for generating a shearing force between the upper surface corner of the anvil and separating the crimp terminal on the anvil from the carrier, and a first elastic means for supporting the cutting portion in a state of being biased upward. The lower unit,
A pressing member that crushes the crimp terminal in cooperation with the anvil of the base, a second holding member that holds the pressing member, a second holding member that is disposed so as to contact the upper surface of the cutting portion, and the second A cutting portion pressing member supported slidably with respect to the holding member, and an upper unit provided with second elastic means for supporting the cutting portion pressing member in a state of being biased downward,
Before the crushing operation of the crimp terminal is started by the pressing member and the anvil, the cutting portion press against the upper surface of the cutting portion so that the lower surface of the cutting portion pressing member abuts on the upper surface of the cutting portion. The height of the lower surface of the member is set,
The first elastic means includes a first spring having a smaller spring constant than the second elastic means and a second spring disposed in series with the first spring and having a larger spring constant than the second elastic means. It has something.

  According to the present invention, when the crimp terminal is fed onto the anvil of the base and the wire from which the coating material at the tip portion has been removed is fed into the crimp terminal on the anvil, the crimp terminal is crushed, Is fixed to the electric wire.

  By the way, the first holding member of the lower unit is supported so as to be slidable in a state where the cutting portion having the groove-shaped clamping portion is biased upward, while the first unit of the upper unit facing the cutting portion. Since the two holding members are provided with a cutting portion pressing member that presses the cutting portion, when the upper unit and the lower unit approach each other, the cutting portion pressing member comes into contact with the upper surface of the cutting portion, and the cutting portion is Press down. Here, the height of the lower surface of the cutting portion pressing member relative to the upper surface of the cutting portion is determined so that the lower surface of the cutting portion pressing member contacts the upper surface of the cutting portion before the pressing operation of the crimp terminal is started by the pressing member and the anvil. Since the height is set so as to contact, the cutting portion starts to descend before the crimp terminal is crushed. That is, before the crushing operation is started or at the initial stage of the crushing operation, the position of the clamping portion (that is, the position of the carrier and the crimp terminal) in the cutting portion can be adjusted to the height of the anvil. That is, it is possible to place the crimp terminal extending from the carrier in the substantially horizontal direction on the anvil while maintaining the horizontal state.

  More specifically, the cutting portion pressing member of the present invention is supported so as to be slidable in the vertical direction with respect to the second holding member of the upper unit, and is biased downward by the second elastic means. On the other hand, the cutting portion is supported so as to be slidable in the vertical direction with respect to the first holding member of the lower unit, and is biased upward by the first elastic means. In particular, the first elastic means is composed of a first spring having a smaller spring constant than the second elastic means and a second spring having a larger spring constant than the second elastic means. For this reason, when the upper unit and the lower unit come close to each other and the cutting portion pressing member is pressed against the upper surface of the cutting portion, first, the first spring having the smallest spring constant is elastically deformed. Lower to a predetermined position. Thereby, it becomes possible to lower the position of the clamping part in the cutting part (that is, the position of the carrier and the crimp terminal) to the height of the anvil.

  When the elastic deformation range of the first spring is exceeded, the second elastic means of the upper unit having the next smallest spring constant, that is, the second elastic means for biasing the cutting portion pressing member downward is elastically deformed. For this reason, even if an upper unit descends, it can hold | maintain in the state, without displacing a cutting part press member and a cutting part by contraction of a 2nd elastic means. During this time, the operation of crushing the crimp terminal proceeds between the pressing member provided in the upper unit and the anvil of the base provided in the lower unit.

  Thereafter, when the lower unit and the upper unit further approach with the progress of the crushing operation, the elastic limit of the second elastic means (the limit position for elastic deformation) is reached, and the crushing pressure is directly applied to the cutting portion. Here, the crushing pressure is larger than the restoring force of the second spring that urges the cutting portion upward, so that the cutting portion descends again due to the elastic deformation of the second spring, and the corner portion of the clamping portion and the anvil A shear force is generated between the top corners. As a result, the crimp terminal is separated from the carrier. Thereafter, the crushing operation is completed, and the crimp terminal is crimped to the electric wire.

  By the way, in the terminal crimping applicator according to the present invention, “when the position of the clamping part in the cutting part substantially coincides with the height of the anvil, the first spring is reached so that the elastic limit of the first spring is reached. It is preferable that the elastic deformation region of one spring is set. " Here, “elastic limit” means a limit position where elastic deformation occurs.

  According to this, when the cutting portion pressing member is pressed against the upper surface of the cutting portion, the cutting portion is lowered due to elastic deformation of the first spring, and when the first spring is not elastically deformed thereafter, the cutting portion is lowered. Once stopped. Here, since the elastic deformation region of the first spring is set so as to reach the elastic limit when the position of the clamping part in the cutting part substantially matches the height of the anvil, the position of the clamping part is set to the position of the anvil. It becomes possible to match the height reliably. That is, the crushing operation can be performed with the carrier and the crimp terminal accurately positioned.

  By the way, even if the spring constant of the second spring in the first elastic means is set to be larger than the spring constant of the first spring and the second elastic means, these spring constants are relatively approximate. When the first spring or the second elastic means is elastically deformed, the second spring may be slightly elastically deformed by a load applied to the second spring. In this case, even if the first elastic deformation region is set in accordance with the folding angle and the position of the cutting part, the elastic limit of the first spring is not stabilized by the elastic deformation of the second spring, and as a result The crimp terminal may be crushed without being held on the anvil.

  Therefore, according to the present invention, in the above-described terminal crimping applicator, “the second spring is a coil spring, and as an initial state of the second spring, a distance between lines in the second spring is set to a predetermined length. It is preferable to employ a configuration that further includes a compression holding member that holds the compressed state.

  If this configuration is adopted, the second spring (coil spring) is held by the compression holding member in a state where the distance between the wires is compressed by a predetermined length, so that a load of a predetermined amount or more is applied. Is held at the length set as the initial state without elastic deformation. Therefore, even when the spring constant is relatively approximate, it is possible to prevent the first spring or the second elastic means and the second spring from being deformed simultaneously. That is, it is possible to accurately match the position of the sandwiching portion.

  Thus, according to the terminal crimping applicator of the present invention, it becomes possible to hold the crimping terminal in a horizontal state on the anvil at the initial stage of the crimping operation, and reliably prevent the crimping terminal from being bent downward. be able to. In addition, the timing at which the crimp terminal is separated from the carrier is delayed by supporting the cutting unit pressing member of the upper unit provided to press down the cutting unit while being biased downward by the second elastic means. Can do. In particular, the first elastic means for urging the cutting portion upward is composed of a first spring having a smaller spring constant than the second elastic means and a second spring having a larger spring constant than the second elastic means. The crimp terminal can be crushed while being held on the anvil. Therefore, it is possible to provide a high-quality crimping method without forcing a highly accurate adjustment operation.

  Hereinafter, a terminal crimping apparatus to which a terminal crimping applicator according to a first embodiment of the present invention is applied will be described with reference to FIGS. 1 to 6. FIG. 1 is an explanatory view showing a system configuration of a terminal crimping apparatus, FIGS. 2 to 4 are diagrams showing a configuration of a terminal crimping applicator, and FIG. 5 is an enlarged side view of an A portion of FIG. FIG. 6 is an explanatory view showing the operation of the terminal crimping applicator.

  The terminal crimping apparatus 1 performs the supply of the crimp terminal 100 (see FIG. 8), the feeding of the electric wire L, the removal of the covering material, the crushing of the crimp terminal 100, and the cutting of the electric wire L as a series of operations. The electric wire L of the predetermined length crimped | bonded is manufactured continuously. As shown in FIG. 1, the terminal crimping apparatus 1 includes a wire feeding mechanism 2 that feeds the wires L in order of the feeding direction of the wires L, and a terminal crimping applicator that crimps the crimping terminal 100 on the leading end side in the feeding direction of the wires L. The first crimping machine 3A provided with the above, the cutting mechanism 4 for cutting the electric wire L and removing the covering material H at the end of the electric wire L, and the terminal crimping for crimping the crimping terminal 100 to the rear end side in the feed direction of the electric wire L. The second crimping machine 3B provided with the applicator for use and the chuck mechanism 5 for holding the electric wire L after cutting are provided, and these mechanisms are arranged in a straight line.

  The terminal crimping applicators 6 provided in the first and second crimping machines 3A and 3B are separated into an upper unit 7 and a lower unit 8 as shown in FIGS. It is attached to the crimping machines 3A and 3B in a replaceable state. A pressing member 9 and an anvil 10 are attached to the upper unit 7 and the lower unit 8, and the upper unit 7 and the lower unit 8 move in a direction in which they approach each other. It is possible to crush the crimp terminal 100 located between them. Since a space is formed between the upper unit 7 and the lower unit 8, it is possible to send the electric wire L from the rear side to the front side in FIG.

  The upper unit 7 is provided with a connecting portion 11 for detachably attaching to the crimping machine 3, and the connecting portion 11 is connected to a connected portion (not shown) of the crimping machine 3. . A second power mechanism holding member 13 having a cylinder (not shown) is provided below the connecting portion 11, and a holding member 14 that holds the pressing member 9 and the like is further provided below. Yes.

  As shown in FIGS. 4 and 5, the pressing member 9 is positioned above the first crimping portion 102 of the crimping terminal 100 when the two members made of a plate material having a predetermined shape, that is, the crimping terminal 100 is fed. The first pressing member 16 and the second pressing member 17 located above the second crimping portion 103 are configured. Both of the pressing members 16 and 17 are formed with a vertically long notch 18 (see FIG. 2) opened toward the bottom surface, and the anvil 10 is sandwiched between the first crimping portion 102 and the second crimping portion 103 from the side. The first crimping portion 102 is crimped to the covering material H of the electric wire L, and the second crimping portion 103 is crimped to the core wire S from which the covering material H has been removed.

  Further, a scraping member 20 is slidably held between the first pressing member 16 and the second pressing member 17. The upper end portion of the scraping member 20 is connected to the lower end portion of a piston member (not shown) that slides in the cylinder of the second power mechanism holding member 13, and this piston member is an elastic member such as a spring ( (Not shown). Then, with the movement of the piston member in the vertical direction, the scraping member 20 moves in the vertical direction, and the crimp terminal 100 attached to the first pressing member 16 and the second pressing member 17 can be scraped off. .

  On the near side of the second pressing member 17 (right side in FIGS. 4 and 5), an insertion member 21 having a semicircular cutout 21a (see FIG. 2) formed at the lower end is provided. This insertion member 21 prevents the second connecting portion 106 and the connector portion 104 from bending upward during the crushing operation, and prior to the crushing operation of the crimp terminal 100 by the pressing member 9 and the anvil 10. Then, it is inserted between the second crimping portion 103 and the connector portion 104, that is, at the second connecting portion 106. Note that the width of the insertion member 21 substantially matches the length of the second connection portion 106 (that is, the interval between the second crimping portion 103 and the connector portion 104). The insertion member 21 is supported by the holding member 14 so as to be slidable in the vertical direction, and is urged downward by an elastic member 22 such as a spring.

  Further, at the lower end portion of the insertion member 21, specifically, the end surface corner portion on the second crimping portion 103 side and the end surface corner portion on the connector portion 104 side of the insertion member 21, a tapered portion 51 inclined inwardly downward. Is formed. For this reason, even if the position of the crimp terminal 100 fed onto the anvil 10 is slightly shifted in the longitudinal direction (the left-right direction in FIGS. 4 and 5), the crimp terminal 100 is the standing wall part of the second crimp part 103. Alternatively, it is guided in the longitudinal direction by the contact between the standing wall portion of the connector portion 104 and the end surface of the insertion member 21, that is, the tapered portion 51, and is positioned at a normal position.

  The holding member 14 in the upper unit 7 is provided with a cutting portion pressing member 24 protruding downward. The cutting portion pressing member 24 is disposed above a cutting portion 44 of the lower unit 8 to be described later. When the crimping terminal 100 is crushed, the cutting portion pressing member 24 descends together with the holding member 14 and presses the cutting portion 44 to cut the cutting portion pressing member 24. The part 44 is slid downward. The cutting portion pressing member 24 is supported so as to be slidable in the vertical direction with respect to the holding member 14 and is urged downward (that is, on the cutting portion 44 side) by an elastic means 25 such as a coil spring. Here, the holding member 14 corresponds to the second holding member of the present invention, and the elastic means 25 corresponds to the second elastic means of the present invention.

  The second power mechanism holding member 13 of the upper unit 7 is provided with an IC chip unit 26 having an IC chip built therein, and each IC chip stores a different unique identification number. .

  On the other hand, as shown in FIGS. 2 and 3, the lower unit 8 is connected to a connecting portion 27 that can be attached to and detached from a connected portion (not shown) formed in the crimping machine 3 in the same manner as the upper unit 7. A base 28 fixed to the portion 27 and having the anvil 10 formed on the upper surface thereof, and a terminal conveying means 29 located above the connecting portion 27 and extending in the horizontal direction are provided. As shown in FIG. 5, the anvil 10 of this example is divided into a first anvil 30 corresponding to the first crimping portion 102 of the crimp terminal 100 and a second anvil 32 corresponding to the second crimping portion 103. A first base 31 having a first anvil 30 formed on the upper surface and a second base 33 having a second anvil 32 formed on the upper surface are disposed adjacent to each other. That is, the base 28 includes a first base 31 and a second base 33. Both of the bases 31 and 33 are formed of plate-like members having arcuate anvils 30 and 32 formed at the top end portions, and are fixed to the holding member 36 of the lower unit 8 using screws or the like. .

  Further, a lower surface support member 34 is integrally formed on the front side (right side in FIGS. 4 and 5) of the second base 33. The lower surface support member 34 is located below the second connection portion 106 of the crimp terminal 100 and supports the lower surface of the second connection portion 106 during a crushing operation. The upper surface of the second base 33, that is, the second anvil 32 is formed in an arc shape, whereas the upper surface of the lower surface support member 34 is formed in a planar shape, and the bottom surface and the lower surface support of the second anvil 32 are supported. The upper surface of the member 34 has the same height. As shown in FIGS. 3 and 4, an IC chip unit 35 similar to the upper unit 7 is attached to the connecting portion 27.

  Although a detailed description is omitted, the terminal conveying means 29 sequentially supplies the crimp terminals 100 connected in series by the plate-like carrier 101 onto the anvil 10 of the base 28, and the base member 38 and , A groove-shaped guide portion 39 formed on the upper surface of the base member 38, a deviation prevention mechanism 40 that partially blocks the opening of the guide portion 39 and prevents the carrier 101 from deviating, and a plurality of pieces connected by the carrier 101. It is comprised from the conveyance mechanism 41 which conveys the crimp terminal 100, and the 1st power mechanism holding member 42 provided with the piston and cylinder which are not shown in figure which slide the conveyance mechanism 41 in a horizontal direction.

  By the way, as shown in FIGS. 3 and 4, the cutting part 44 supported by the holding member 36 separates the crimp terminal 100 to be crushed from the carrier 101 when the crimp terminal 100 is crushed. More specifically, the cutting portion 44 has a groove-like sandwiching portion 46 that guides the carrier 101 in a sandwiched state, and is supported so as to be slidable in the vertical direction with respect to the holding member 36. Yes. In particular, the cutting portion 44 is biased upward by an elastic means 45 constituted by a coil spring or the like, and is supported so that the clamping portion 46 is positioned above the anvil 10 of the base 28. The elastic means 45 is disposed in series with a first coil spring 45a having a smaller spring constant than the elastic means 25 (second elastic means) for biasing the cutting portion pressing member 24 downward, and the first coil spring 45a. The second coil spring 45b has a spring constant larger than that of the elastic means 25, and a first coil spring 45a and a connecting member 45c that connects the second coil spring 45b. In other words, the elastic means 45 is provided with a first coil spring 45 a whose amount of deflection with respect to the load is larger than that of the elastic means 25 and a second coil spring 45 b which is smaller than that of the elastic means 25. Although details will be described later, the elastic deformation region of the first coil spring 45 a is set so as to reach the elastic limit when the position of the clamping portion 46 in the cutting portion 44 coincides with the height of the anvil 10. Here, the holding member 36 corresponds to the first holding member of the present invention, and the elastic means 45 corresponds to the first elastic means of the present invention. The first coil spring 45a corresponds to the first spring of the present invention, and the second coil spring 45b corresponds to the second spring of the present invention.

  Thus, since the cutting part 44 is supported so as to be slidable in the vertical direction and is urged upward by the elastic means 45, when pressed downward by the cutting part pressing member 24 of the upper unit 7, The cutting portion 44 slides downward against the elastic force of the elastic means 45, and can generate a shearing force between the front side corner portion of the clamping portion 46 and the upper side corner portion of the back side of the anvil 10. It becomes. That is, the crimping terminal 100 on the anvil 10 can be separated from the carrier 101 by lowering the cutting part 44 with the carrier 101 passed through the holding part 46.

  On the other hand, as shown in FIG. 1, the electric wire feeding mechanism 2 includes an electric wire take-in guide 48, two sets of rollers 49, a guide pipe 50, and the like. The opposing rollers 49 are movable so as to approach and separate from each other, and the rollers 49 are driven to rotate by roller driving means (not shown), and the rotation direction and the number of rotations are controlled, whereby the electric wires L Can be sent for any length. The electric wire L taken in via the electric wire take-in guide 48 is fed into the guide pipe 50 by the roller 49 and further guided to the tip of the guide pipe 50.

  Although not shown, the cutting mechanism 4 is for cutting the electric wire L and removing the covering material H at the end of the electric wire L, and a pair of blades (upper blade and lower blade) arranged in the vertical direction. And a moving means (not shown) for moving the upper blade in the vertical direction with respect to the lower blade. That is, the electric wire L is cut | disconnected by operating a moving means so that an upper blade may contact | abut a lower blade in the state which inserted the electric wire L between the upper blade and the lower blade. In addition, the distance between the upper blade and the lower blade is the size of the core wire S of the electric wire L in a state where the electric wire L is inserted between the upper blade and the lower blade so that the end portion of the electric wire L protrudes by a predetermined length. The moving member is operated so as to have a distance corresponding to, and then the electric wire L is pulled by the electric wire feeding mechanism 2 or the chuck mechanism 5, whereby the covering material H at the end of the electric wire L is removed.

  Next, the operation of the terminal crimping apparatus 1 of the present embodiment, particularly the crushing operation in the terminal crimping applicator 6 will be described. First, as shown in FIGS. 3 and 4, the crimp terminals 100 are sequentially supplied onto the anvil 10 of the base 28 by the terminal conveying means 29. That is, when the piston rod is urged to the left in FIG. 3 by the operation of a cylinder (not shown) in the first power mechanism holding member 42, the transport mechanism 41 moves in the same direction, and a series of crimp terminals 100 are connected. The carrier 101 is transported to a predetermined position.

  On the other hand, as shown in FIG. 1, the tip of the electric wire L sent out from the electric wire feeding mechanism 2 is once sent to the cutting mechanism 4 through the first crimping machine 3A. And the front-end | tip of the electric wire L sent to the cutting | disconnection mechanism 4 is pinched | interposed by the upper blade and the lower blade, and the electric wire L is sent back by the electric wire feed mechanism 2, and the coating | coated material H of a front-end | tip part is removed. Furthermore, the tip of the electric wire L is sent back to the position of the first crimping machine 3A.

  Subsequently, as shown in FIG. 5, the tip end of the electric wire L is fed into the crimp terminal 100 located on the anvil 10 of the lower unit 8. Specifically, the core S portion of the electric wire L from which the covering material H has been removed is positioned above the second crimping portion 103 and the second connecting portion 106 in the crimp terminal 100, and the covering H portion on the tip side is the first crimping portion. It is sent so that it may be located above 102.

  Thereafter, in the first crimping machine 3A, the upper unit 7 and the lower unit 8 are lowered and raised (approached to each other). Then, as shown in FIG. 6, the cutting portion pressing member 24 comes into contact with the upper surface of the cutting portion 44 and presses the cutting portion 44 downward. That is, the bottom surface position of the cutting portion pressing member 24 is set to a height that abuts against the upper surface of the cutting portion 44 before the crimp terminal 100 is crushed between the pressing member 9 and the anvil 10, that is, before the crushing operation. Therefore, when the upper unit 7 and the lower unit 8 approach each other, the cutting part 44 is first pressed by the cutting part pressing member 24. By the way, the cutting portion 44 is supported so as to be slidable in the vertical direction with respect to the holding member 36 of the lower unit 8 and is urged upward by the elastic means 45. In particular, the elastic means 45 includes a first coil spring 45a having a smaller spring constant than the elastic means 25 (second elastic means) and a second coil spring 45b having a larger spring constant than the elastic means 25. For this reason, when the cutting portion pressing member 24 presses the upper surface of the cutting portion 44, first, the first coil spring 45a having the smallest spring constant is elastically deformed, and the cutting portion 44 is lowered to a predetermined position. Here, the elastic deformation region of the first coil spring 45a is set so as to reach the elastic limit when the position of the clamping part 46 in the cutting part 44 substantially matches the height of the anvil 10, and therefore the cutting part 44 Is stopped and held in a state in which the position of the clamping portion 46 coincides with the height of the anvil 10, that is, in a state in which the crimp terminal 100 protruding from the carrier 101 is placed on the anvil 10. That is, the crimp terminal 100 is placed on the first anvil 30 and the second anvil 32 of the first base 31 and the second base 33 while maintaining the state of extending from the carrier 101 in the horizontal direction. . In FIG. 6, for convenience of explanation, a drawing in which the pressing member 9 is omitted is shown.

  When the elastic deformation range of the first coil spring 45a is exceeded, the elastic means 25 of the upper unit 7 having the next smallest spring constant is elastically deformed. For this reason, even if the upper unit 7 and the lower unit 8 approach each other, the cutting unit pressing member 24 and the cutting unit 44 can be held as they are without being displaced by the contraction of the elastic means 25. During this time, the operation of crushing the crimp terminal 100 proceeds between the pressing member 9 provided in the upper unit 7 and the anvil 10 of the base 28 provided in the lower unit 8.

  Thereafter, as the crushing operation proceeds, when the lower unit 8 and the upper unit 7 further approach each other, the elastic limit of the elastic means 25 is reached, and the crushing pressure is directly applied to the cutting portion 44. Here, since the crushing pressure is larger than the elastic force of the second coil spring 45b urging the cutting portion 44 upward, the cutting portion 44 descends again due to the elastic deformation of the second coil spring 45b, and the clamping portion 46 A shear force is generated between the corner and the top corner of the anvil 10. As a result, the crimp terminal 100 is separated from the carrier 101.

  Moreover, since the insertion member 21 is inserted between the 2nd crimping | compression-bonding part 103 and the connector part 104 with the operation | movement of the cutting | disconnection part press member 24, one end surface (end surface by the side of the 2nd press member 17) of the insertion member 21 is inserted. ) And the standing wall portion of the second crimping portion 103 facing it, and the other end face of the insertion member 21 and the standing wall portion of the connector portion 104 facing it. For this reason, even when an external force is applied so that the second connecting portion 106 and the connector portion 104 bend upward during the crushing operation, the contact between the other end surface of the insertion member 21 and the standing wall portion of the connector portion 104 occurs. The bending of the connector part 104 is suppressed.

  In the crushing operation, the upper unit 7 and the lower unit 8 further approach each other after the distal end portion of the insertion member 21 is inserted between the second crimping portion 103 and the connector portion 104. However, since the insertion member 21 of this example is urged downward by the elastic member 22, the insertion member 21 is displaced relatively upward against the elastic force of the elastic member 22, The second connecting portion 106 is prevented from being crushed.

  Thereafter, when the upper unit 7 and the lower unit 8 further approach each other, the first pressure-bonding portion 102 is crushed by the first pressing member 16 and the first anvil 30, and the second pressure-bonding portion is pressed by the second pressing member 17 and the second anvil 32. 103 is crushed, whereby the crimp terminal 100 is crimped to the electric wire L. The pressing member 9 extends downward from the cutting portion pressing member 24 and the insertion member 21, but as shown in FIG. 2, a vertically long notch 18 is formed at the lower end of the pressing member 9. Therefore, as described above, after the cutting portion pressing member 24 comes into contact with the cutting portion 44 and the insertion member 21 is inserted between the second crimping portion 103 and the connector portion 104, the first crimping portion 102 is inserted. And the 2nd crimping | compression-bonding part 103 is crushed.

  When the crushing operation is completed, the upper unit 7 and the lower unit 8 are raised and lowered so as to be separated from each other.

  Thereafter, the electric wire L is fed by a predetermined length by the electric wire feeding mechanism 2, is gripped by the chuck mechanism 5, and is cut to a predetermined length by the cutting mechanism 4. Further, the covering material H at the rear end portion of the cut electric wire L is removed, and the crimp terminal 100 is crimped to the rear end portion of the electric wire L in the second crimping machine 3B as in the first crimping machine 3A. Thereby, the electric wire L provided with the crimp terminal 100 at both ends is completed.

  As described above, according to the terminal crimping applicator 6 of the first embodiment, it is possible to lower the cutting portion 44 at the initial stage of the crimping operation, that is, to hold the crimping terminal 100 in a horizontal state on the anvil 10. Thus, it is possible to reliably prevent the crimp terminal 100 from being bent downward. In addition, the cutting portion pressing member 24 of the upper unit 7 is slidably supported and supported while being urged downward by the elastic means 25, thereby delaying the timing at which the crimp terminal 100 is separated from the carrier 101. Can do. In particular, the elastic means 45 that urges the cutting portion 44 upward includes a first coil spring 45 a having a smaller spring constant than the elastic means 25 and a second coil spring 45 b having a larger spring constant than the elastic means 25. Therefore, the crimp terminal 100 can be crushed while being held on the anvil 10. Therefore, it is possible to provide a high-quality crimping method without forcing a highly accurate adjustment operation.

  Further, according to the terminal crimping applicator 6 of the present embodiment, the insertion member 21 can reliably prevent the crimping terminal 100 from bending upward. For this reason, it becomes possible to provide a crimping method with higher quality. In particular, the insertion member 21 is held with a relatively small force because it prevents the connector portion 104 from bending upward by making it abut against the connector portion 104 of the crimp terminal 100 from the side. Moreover, since fine adjustment in the vertical direction is not necessary, the burden on the operator or the like can be greatly reduced. Moreover, since the insertion member 21 is inserted between the 2nd crimping | compression-bonding part 103 and the connector part 104, the movement to the longitudinal direction of the crimping terminal 100 is restrict | limited by the insertion member 21, and the electric wire L, the crimping terminal 100, and Thus, the crimp terminal 100 can be crushed in a state in which the above is reliably handled.

  Furthermore, since the upper unit 7 and the lower unit 8 are separated in the terminal crimping applicator 6 of the present embodiment, it is possible to manage them individually. For this reason, the burden on the replacement work of the units 7 and 8 is reduced, and the unit 7 and 8 can be accommodated even in a relatively small place. For example, in the case of a large unit, it has been necessary to store in a warehouse and take out and transport it from the warehouse at the time of replacement. However, by reducing the size, a shelf arranged near the terminal crimping device 1 It can also be accommodated in the drawer and can be replaced easily and quickly. Further, since the upper unit 7 and the lower unit 8 each have an IC chip built therein, a desired terminal crimping applicator 6 can be selected from a plurality of terminal crimping applicators 6 by reading information on the IC chip. It can be easily found.

  Next, a terminal crimping applicator 51 according to a second embodiment of the present invention will be described with reference to FIG. The basic configuration of the terminal crimping applicator 51 is substantially the same as that of the terminal crimping applicator 6 of the first embodiment, and therefore, common portions are denoted by the same reference numerals and detailed description thereof is omitted. . That is, only the elastic means 52 and the like having a characteristic configuration will be specifically described.

  Similar to the elastic means 45 in the first embodiment, the elastic means 52 of this example has a first coil spring 53 having a smaller spring constant than that of the elastic means 25 (see FIG. 6) and a first spring constant larger than that of the elastic means 25. In this example, as the initial state of the second coil spring 54, the distance between the wires in the second coil spring 54 (so-called pitch) is compressed for a predetermined length. A compression holding member 55 to hold and a regulating member 56 to regulate the elastic limit of the first coil spring 53 are provided.

  The compression holding member 55 includes a base plate 58 fixed to the holding member 36 of the lower unit 8, a guide rod 59 suspended from the upper surface of the base plate 58 and inserted into the second coil spring 54, and a guide rod A compression plate 60 that is externally fitted to the upper portion of 59 and compresses the second coil spring 54 by limiting the length of the second coil spring 54, and an upper limit position of the compression plate 60 that is fixed to the upper end of the guide rod 59 is regulated. It is comprised from the stopper 61 which carries out. As a result, the second coil spring 54 is held in a pre-compressed state, and thus is held at a constant length without elastic deformation until a large load of a predetermined amount or more is applied. On the other hand, the restricting member 56 is formed of a cylindrical member shorter than the first coil spring 53 and is attached to the upper surface of the compression plate 60.

  According to the terminal crimping applicator 51 having such a configuration, first, when the cutting portion 44 is pressed downward and the first coil spring 53 is elastically deformed, the first coil spring 53 is a cylindrical regulating member. It is accommodated in a compressed state inside 56, and the bottom surface of the cutting portion 44 comes into contact with the top surface of the regulating member 56. In this contact state, the first coil spring 53 cannot be elastically deformed any further, so that the elastic limit of the first coil spring 53 has been reached. Thereafter, when the cutting portion 44 is further pressed downward and the load applied to the second coil spring 54 exceeds a predetermined amount, the second coil spring 54 begins to be elastically deformed and the cutting portion 44 is lowered.

  Therefore, according to the terminal crimping applicator 51 of this example, only the first coil spring 53 is elastically deformed until the load applied to the elastic means 52 reaches a predetermined amount. Only the coil spring 54 is elastically deformed. For this reason, even when the spring constants of the two coil springs 53 and 54 are relatively approximate, they can be prevented from being deformed at the same time, and the position of the clamping portion 46 can be surely adjusted to the height of the anvil 10. It becomes possible.

  The present invention has been described with reference to two preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention as described below. It is possible to improve and change the design.

  That is, in the terminal crimping applicators 6 and 51 described above, the pressing member 9 and the cutting portion pressing member 24 are shown held by the same holding member 14, but the upper unit 7 includes a plurality of holding members. These may be held separately. Similarly, the base 28 and the cutting portion 44 may be held by different members.

  Further, in the terminal crimping applicators 6 and 51, the characteristics of the two coil springs 45a and 45b constituting the elastic means 45 are not particularly specified, but these coil springs 45a and 45b are of linear characteristics. It may be a non-linear characteristic. Moreover, you may make it use springs other than a coil spring, for example, a leaf | plate spring, a disc spring, or a tension | pulling coil spring. However, if a coil spring is used as in this example, the cutting portion 44 can be biased upward with a simple configuration.

  Furthermore, in the terminal crimping applicators 6 and 51 described above, the upper unit 7 and the lower unit 8 are brought close to each other during the crushing operation, but only the upper unit 7 is fixed by fixing the lower unit 8. It may be lowered.

It is explanatory drawing which shows the system configuration | structure of the terminal crimping apparatus to which the applicator for terminal crimping of this invention is applied. It is a front view which shows the structure of the applicator for terminal crimping of 1st embodiment. It is a perspective view which shows the structure of the applicator for terminal crimping. It is a left view which shows the structure of the applicator for terminal crimping. It is the expansion left view which expanded the A section in FIG. It is explanatory drawing which shows operation | movement of the applicator for terminal crimping. It is explanatory drawing which shows the structure of the applicator for terminal crimping of 2nd embodiment. (A) is a perspective view which shows the structure of a crimp terminal, (b) is a top view which shows the structure of a crimp terminal. It is explanatory drawing which shows the structure of the conventional applicator for terminal crimping.

Explanation of symbols

6, 51 Applicator for terminal crimping 7 Upper unit 8 Lower unit 9 Pressing member 10 Anvil 14 Holding member (second holding member)
24 cutting part pressing member 25 elastic means (second elastic means)
28 Base 36 Holding member (first holding member)
44 Cutting part 45, 52 Elastic means (first elastic means)
45a First coil spring (first spring)
45b Second coil spring (second spring)
46 Holding part 55 Compression holding member 100 Crimp terminal 101 Carrier

Claims (3)

A base with an anvil formed on the top surface,
A first holding member for holding the base;
A groove-shaped holding portion that supports the plate-like carrier connected to the crimping terminal is formed at a height above the anvil, and is supported slidably with respect to the first holding member. A cutting portion for generating a shearing force between the corner portion of the sandwiching portion and the upper surface corner portion of the anvil by sliding downward, and separating the crimp terminal on the anvil from the carrier;
And a lower unit provided with first elastic means for supporting the cutting portion in a state of being biased upward,
A pressing member for collapsing the crimp terminal in cooperation with the anvil of the base;
A second holding member for holding the pressing member;
A cutting portion pressing member that is disposed so as to be able to contact the upper surface of the cutting portion and is slidably supported with respect to the second holding member;
And an upper unit provided with second elastic means for supporting the cutting portion pressing member in a state of being biased downward,
Before the crushing operation of the crimp terminal is started by the pressing member and the anvil, the cutting portion press against the upper surface of the cutting portion so that the lower surface of the cutting portion pressing member abuts on the upper surface of the cutting portion. The height of the lower surface of the member is set,
The first elastic means includes a first spring having a smaller spring constant than the second elastic means and a second spring disposed in series with the first spring and having a larger spring constant than the second elastic means. A terminal crimping applicator characterized by comprising:   The elastic deformation region of the first spring is set so that the elastic limit of the first spring is reached when the position of the clamping portion in the cutting portion substantially matches the height of the anvil. The applicator for terminal crimping according to claim 1. The second spring comprises a coil spring;
The compression holding member which hold | maintains in the state which compressed the distance between the lines in this 2nd spring predetermined length as an initial state of this 2nd spring is characterized by the above-mentioned. Applicator for terminal crimping as described.

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