JP2008030161A - Workpiece positioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To uniformly abut an abutting surface of a clamp arm on an abutted surface of a workpiece. <P>SOLUTION: The workpiece positioning device is equipped with a device body having a workpiece mounting part, the clamp arm having one end part abutting on the abutted surface of the workpiece and a fulcrum separating from the one end part swingably mounted to the device body, a pressing means pressing the other end sandwiching the fulcrum with one end of the clamp arm to press the clamp arm in the direction for separating the one end from the workpiece, a first regulation member allowing only movement to an appropriate vertical direction with respect to the abutted surface when the clamp arm abuts on the abutted surface of the workpiece, a second regulation member which restricts the movement of the clamp arm to the appropriate vertical direction and an appropriate parallel direction with respect to the abutted surface, and an energizing means which gives an energizing force having a vertical direction component for moving one end part of the clamp arm to the direction approaching to the workpiece mounting part and a parallel direction component for moving to the direction separating from the workpiece mounting part to the clamp arm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a workpiece positioning device for positioning an electronic component mounted on a surface of a substrate, and more particularly to a workpiece positioning device that performs positioning by pressing and holding an electronic component in a forming process of the electronic component.

  In the process of manufacturing an electronic component, for example, a surface mount component used as a three-terminal filter, an operation for forming a terminal fitting of the mount component, that is, a forming step is essential. In recent years, electronic components have been miniaturized, and it has become necessary to perform the forming process with higher accuracy. In order to perform this forming process with high accuracy, it is necessary to position the workpiece with high accuracy, and various positioning devices have been conventionally proposed in the forming process.

  A positioning device for holding the panel material when hemming the panel material for an automobile will be described below. FIG. 7 is a front view showing a conventional clamping device.

  A conventional workpiece positioning device 501 includes a swing arm 505 that is swingably supported on the side of the lower mold 502, a clamp arm 503 that is instructed to swing at the tip of the swing arm 505, and one end of the clamp arm 503. An intermediate arm 507 having the other end connected to the swing arm 505, a tension coil spring 513 interposed between the intermediate arm 507 and the swing arm 505, and a cylinder 511 for pivoting the swing arm 505. .

  In the above configuration, when the cylinder 511 is operated to protrude the rod 515, the swing arm 505 swings counterclockwise about the hinge pin 517. On the other hand, when the rod 515 is retracted, the swing arm 505 swings clockwise.

  Further, one end of the intermediate arm 507 is connected to the rear of the hinge pin 521 of the clamp arm 503 via the hinge pin 519. The connecting pin 509 is connected to a long hole 521 formed in the swing arm 505 in the vertical direction and can be displaced within the range of the long hole 521. When the connecting pin 109 is displaced upward, the rear portion of the clamp arm 503 is pushed through the hinge pin 514, and the clamp arm 503 swings counterclockwise around the hinge pin 521 to hold the workpiece 523 (see Patent Document 1). .

JP-A-8-197149 (paragraphs [0017] to [0021], FIG. 1 etc.)

  In the conventional workpiece positioning device, the clamp arm 503 swings and comes into contact with the workpiece 523. When this workpiece positioning device is used in the forming process of an electronic component, when the clamp arm 503 contacts the workpiece 523, the entire contact surface of the clamp arm 503 that contacts the workpiece 523 is in contact with the contacted surface of the workpiece 523. There is a risk of non-uniform hits. As a result, the force to be applied to the workpiece 523 cannot be made uniform, and the workpiece 523 may be overloaded and damaged, or the positioning of the workpiece 523 may be incomplete. Furthermore, the load on the workpiece 523 is uneven, and there is a possibility that the terminal metal in the subsequent forming process cannot be bent with high accuracy.

  Therefore, the present invention provides a positioning device that can accurately and reliably position a workpiece with a configuration in which the abutting surface of the clamp arm can uniformly abut against the abutted surface of the workpiece. The purpose is to do.

  A first aspect of a workpiece positioning device for positioning a workpiece according to the present invention for solving the above-described problems is a device main body having a workpiece mounting portion for mounting the workpiece, and a contact surface of the workpiece. A clamp arm having one end portion that abuts and a swing fulcrum spaced from the one end portion, the clamp arm mounted on the apparatus main body so as to be swingable, and the one end portion of the clamp arm have a swing support point. A pressing means that presses the other end sandwiched and presses the clamp arm in a direction that separates the one end from the work; and when the clamp arm comes into contact with a contact surface of the work, A first restricting member that allows only movement in a substantially vertical direction with respect to a surface and restricts swinging of the clamp arm and movement in a direction substantially parallel to the abutted surface; and the clamp arm In the swing range of A second restricting member for restricting movement of the clamp arm in a substantially vertical direction and a direction substantially parallel to the abutted surface, and the one end portion of the clamp arm with respect to the substantially vertical direction. A biasing force is applied to the clamp arm that has a vertical direction component that moves in a direction approaching the placement portion and a parallel direction component that moves in a direction away from the workpiece placement portion with respect to the substantially parallel direction. Biasing means, and the one end of the clamp arm abuts against the abutting surface of the workpiece from a substantially vertical direction to position the workpiece.

  According to a second aspect of the workpiece positioning apparatus of the present invention, the first restricting member is a vertical wall provided in the apparatus main body and extending in the substantially vertical direction adjacent to the clamp arm, The second restricting member is a curved wall portion provided in the apparatus main body and supporting the swing fulcrum.

  According to a fourth aspect of the workpiece positioning apparatus of the present invention, the first regulating member is a pair of vertical wall portions provided in the apparatus main body and extending in the substantially vertical direction across the clamp arm, The second restricting member is a wall portion provided in the apparatus main body and extending in the substantially parallel direction.

  According to the 3rd aspect of the workpiece | work positioning device of this invention, the said vertical wall part is comprised from a pair of member opposingly arranged so that the said clamp arm may be pinched | interposed.

  According to a fourth aspect of the workpiece positioning apparatus of the present invention, the first regulating member is a vertical wall provided in the apparatus main body, provided in the apparatus main body, and extending in the substantially vertical direction, The second restricting member is a curved wall portion provided in the apparatus main body and supporting the swing fulcrum.

  According to a fifth aspect of the workpiece positioning apparatus of the present invention, one of the clamp arm and the apparatus main body has an engagement pin arranged concentrically with the swing fulcrum, and the clamp arm and the apparatus main body. The other has an inverted L-shaped groove with which the engaging pin is slidably engaged, and the first restricting member and the second restricting member are composed of inverted L-shaped grooves.

  According to a sixth aspect of the workpiece positioning apparatus of the present invention, one of the clamp arm and the apparatus main body has an engagement pin arranged concentrically with the swing fulcrum, and the clamp arm and the apparatus main body. The other has a reverse L-shaped groove with which the engagement pin is slidably engaged, and the apparatus body further has a vertical wall portion extending in a substantially vertical direction adjacent to the clamp, The first restricting member is composed of an inverted L-shaped groove and the vertical wall portion, and the second restricting member is composed of an inverted L-shaped groove.

  According to a seventh aspect of the workpiece positioning apparatus of the present invention, in the first to sixth aspects, a rotatable rotating roller is attached to the other end of the clamp arm, and the pressing means presses the rotating roller. Either. By using a rotating roller, the operation of the clamp arm can be made fast and smooth.

  According to an eighth aspect of the workpiece positioning apparatus of the present invention, a clamp mechanism having second pressing means for positioning the workpiece in two directions substantially parallel to the contact surface and orthogonal to each other; A slide that slides in a substantially parallel direction, and the pressing means and the second pressing means are any one of first to seventh aspects that are mounted on the slide. By driving a single slider, positioning in three directions (x-axis, y-axis, and z-axis directions) with respect to the workpiece can be realized.

  According to the workpiece positioning device of the present invention, the clamp arm moves in a substantially vertical direction with respect to the contact surface of the workpiece, and the clamp arm contacts the workpiece contact surface, so that a part of the workpiece is overloaded. Can be prevented. Furthermore, since the workpiece can be held in a state where an equal load is applied to the workpiece, the workpiece can be positioned reliably.

  Hereinafter, an embodiment of a workpiece positioning apparatus according to the present invention will be described with reference to the drawings. In the drawings, the same parts are denoted by the same reference numerals.

(Embodiment 1)
FIG. 1 is a schematic view of a workpiece positioning device 1 according to an embodiment of the present invention, (A) is a partial sectional front view, and (B) is a sectional view taken along line IB-IB in FIG. (C) is a plan view of FIG. 1, and (D) is an enlarged view of an ID portion of FIG. 1 (A). In FIGS. 1C and 1D, only the main elements of the workpiece positioning device are shown for clarity of the drawings.

  Moreover, in this embodiment, although it is set as the structure provided with the up-down direction clamp mechanism 8 and the front-back direction clamp mechanism 10, the workpiece | work positioning device of this invention is provided with only the up-down direction clamp mechanism 8 without being limited to this structure. It goes without saying that it can be configured.

  The vertical clamping mechanism 8 of the workpiece positioning device 1 includes an inverted C-shaped clamp arm 3 having an abutting portion 23 that abuts on the workpiece 20 (see FIG. 3) and an engaging portion 31 that serves as a swing fulcrum x. The urging means, that is, the coil spring 11 connected to apply the urging force to the clamp arm 3, and the pressing means (19, 19) for pressing the clamp arm 3 in the direction of separating the contact portion 23 of the clamp arm 3 from the workpiece 20. 43), a first restricting member that allows only movement in a substantially vertical direction (vertical direction in the drawing) when the clamp arm 3 abuts against the workpiece 20, and restricts swinging of the clamp arm 3. A second restricting member for restricting movement of the clamp arm in a substantially vertical direction within a swing range of the clamp arm. The pressing means includes a linear cam 19 that is a cam member and a cam follower 43 of the linear cam 19.

  The front-rear direction clamping mechanism 10 includes a front-rear positioning arm 21 for positioning in the front-rear direction (left-right direction in FIG. 1). The front / rear positioning arm 21 is a member bent in a C shape. The clamp arm 3 and the front / rear positioning arm 21 are arranged so as to face each other in the left-right direction of the drawing.

  The above components will be described in detail below. An abutting portion 23 that presses the workpiece 20 is provided at one end of the inverted C-shaped clamp arm 3, and a rotating roller 25 is attached to the other end via a ball bearing. Further, the abutting surface 23 a at one end of the abutting portion 23 abuts in a positional relationship parallel to the abutted surface that is the upper surface of the workpiece 20. That is, when the abutted surface extends in the horizontal direction, the abutting surface 23a has a positional relationship such that it also extends in the horizontal direction. Further, a swing fulcrum x is disposed between the contact portion 23 and the rotating roller 25.

  An inverted L-shaped groove 27 is formed in the vertical portion 3 a of the clamp arm 3. The groove 27 includes a first groove portion 27a extending along the longitudinal direction of the vertical portion 3a, and a second groove portion 27b extending perpendicularly to the first groove portion 27a and extending in the short direction of the vertical portion 3a. A cylindrical engagement pin 31 provided in the apparatus main body 29 is slidably engaged in the groove 27. Therefore, the movement range of the clamp arm 3 is limited to a range in which the engagement pin 31 can move in the groove 27.

  Further, in the vertical portion 3a, below the groove 27, an arm swing shaft 37 that passes through the clamp arm 3 (left and right direction in FIG. 1B) and extends concentrically with the swing support point x is fitted. . In the present embodiment, the arm swing shaft 35 is provided with a rotating roller 35 with a ball bearing interposed therebetween. Further, the apparatus main body 29 is provided with a curved wall portion 41 extending in a curved shape (concave shape) that restricts the upward movement of the rotating roller 35 in FIG. 1 (see FIG. 1D). In the present embodiment, the curved wall portion 41 has a curved shape that is complementary to the rotary roller 35 so that the rotary roller 35 is reliably engaged with the curved wall portion 41. However, the workpiece positioning device of the present invention is not limited to this shape, and at least a shape that can restrict movement of the clamp arm 3 in a substantially vertical direction (for example, a substantially flat shape that extends in a substantially horizontal direction). If it is good.

  Further, the apparatus main body 29 includes vertical wall portions 13 and 15 that are substantially parallel to each other and that are restricting members that restrict movement of the clamp arm 3 in the front-rear direction (left-right direction in FIG. 1A). It is adjacent to the vertical part 3a and is provided at a position facing it so as to sandwich the vertical part 3a. Further, the upper end of the vertical wall portion 13 provided on the side on which the clamp arm 3 is inclined is arranged to be lower than the upper end of the vertical wall portion 15 and substantially the same height as the lower end of the vertical wall portion 15. Therefore, when the cam follower 43 is pushed up to raise the clamp arm 3, the outer peripheral surface of the rotating roller 35 is locked to the curved wall portion 41 and the vertical wall portion 13, and when the cam follower 43 is further pressed, the clamp arm 3 is Swing around. Conversely, when the cam follower 43 is lowered, the opened clamp arm 3 swings counterclockwise along the vertical wall portions 13 and 15, and the clamp arm 3 is brought into an upright state. That is, the vertical wall portions 13 and 15 and the curved wall portion 41 define a swing range in which the clamp arm can swing.

  When the clamp arm 3 is further lowered, the forward and rearward movements in the substantially horizontal direction are restricted by the vertical wall portions 13 and 15, so that the clamp arm 3 can be lowered in an upright state.

  Further, as shown in FIG. 1B, the linear cam 19 constituting the pressing means is disposed below the rotating roller 25 of the clamp arm 3. The cam surface of the linear cam 19 is configured by two straight portions 19a and 19b extending in a substantially horizontal direction and having different heights, and an inclined portion 19c connecting both the straight portions 19a and 19b. In addition, a cam follower 43 disposed so as to be movable up and down is disposed substantially vertically above the linear cam 19. The cam follower 43 includes a rotatable roller 45 at the lower end, and a first contact surface 43a and a second contact surface 43b, which are in contact with the clamp arm 3 and the front / rear positioning clamp 21, and have different heights at the upper end. Prepare.

  One end portion 11 a of the coil spring 11, which is an urging member, is mounted on the side closer to the vertical portion 3 a than the roller 25 provided at the lower end of the clamp arm 3. The other end portion 11b is the lower end of the apparatus main body 29 and is mounted on the right side of the swing fulcrum x. That is, the coil spring 11 extends in a direction inclined with respect to the vertical direction of the drawing. The coil spring 11 is dimensioned so as to be in a state where tension is always applied. Therefore, in a state where the roller 25 is not pressed by the cam follower 43, it is a state in which the roller 25 is urged by the work placing portion 51 as in the clamp arm 3 indicated by a solid line. In addition, the magnitude | size of a tension | tensile_strength shall be the magnitude | size with which the workpiece | work 20 is positioned at least reliably at the time of forming with respect to the workpiece | work 20. As the urging means, it is desirable to use a coil spring because the load applied to the workpiece 20 from the clamp arm 3 can be easily set. However, it goes without saying that other biasing means can be used.

  In addition, the position where the one end part 11a and the other end part 11b of the coil spring 11 are mounted is not limited to the configuration of the present embodiment. That is, the vertical component in the direction in which the protrusion 3a of the clamp arm 3 approaches the workpiece placement unit 51 in the substantially vertical direction and the horizontal component separated in the substantially horizontal direction from the workpiece placement unit 51 (parallel to the upper surface of the workpiece 20). The coil spring may be arranged so as to apply an urging force having a large directional component. That is, the one end portion 11 a of the coil spring 11 can be attached to the swing fulcrum x, the vicinity thereof, or a portion above the inverted L-shaped groove 27.

  Next, the front-rear direction clamping mechanism 10 will be described with reference to FIGS. FIG. 2 is a partially cutaway front view of the positioning device according to the embodiment. FIG. 2A shows a state in which the front and rear clamps and the clamp arm are opened, and FIG. 2B shows that the front and rear clamp arms and the clamp arm are closed. State. In addition, in order to show the structure of the front-rear direction clamp mechanism 10 clearly, the structure of the up-down direction clamp mechanism 8 is shown with the dashed-two dotted line in the figure.

  The front / rear direction clamping mechanism 10 includes a front / rear positioning arm 21 that can swing on the paper surface of FIG. 2 and a coil spring that is a biasing means that biases the front / rear positioning arm 21 backward (rightward in FIG. 2). 47, and a linear motion cam 19 and a cam follower 43 which are pressing means. Note that the linear cam 19 and the cam follower 43 are also used as the pressing means of the vertical clamp mechanism 8 described above.

  A protrusion 49 is provided at the tip of the horizontal portion 21 a of the front-rear positioning arm 21. The workpiece 20 is sandwiched and held between the protruding portion 49 and the wall surface 51a of the workpiece mounting portion 51 extending in a substantially vertical direction in FIG.

  A coil spring 47 that urges the vertical portion 21b in the right direction in the drawing is disposed in the apparatus main body 29 in the vicinity of the vertical portion 21b of the front / rear positioning arm 21. One end of the coil spring 47 is fixed to the apparatus main body 29, and the other end is in contact with the left side of the vertical portion 21b. Since the urging force of the coil spring 47 is always applied to the vertical portion 21b, the vertical portion 21b is urged toward the wall portion 51a.

  Further, a swinging fulcrum Y of the front / rear positioning arm 21 is disposed on the bent portion 21c of the front / rear positioning arm 21, and the front / rear positioning arm 21 is mounted on a shaft member 53 concentric with the swinging fulcrum Y. Therefore, the front / rear positioning arm 21 can swing about the shaft member 53 as the rotation center.

  On the lower surface of the base portion 21d of the front / rear positioning arm 21, a protruding portion 21e with which the cam follower 43 abuts is provided. In the above configuration, when the cam follower 43 and the protruding portion 21e are not in contact with each other, the coil spring 47 presses the vertical portion 21b (see FIG. 2B), so that the workpiece 20 is held (or closed). ). When the cam follower 43 moves upward and the contact portion 43b pushes up the protruding portion 21e, the base portion 21d rotates counterclockwise, and the protrusion 49 swings away from the workpiece 20 (leftward in the figure). It will be in an open state (refer to Drawing 2 (A)).

  Operations of the above-described vertical clamp mechanism 8 and front-back clamp mechanism 10 will be described with reference to FIGS. 3A and 3B are the same front views as those of the positioning device of the embodiment shown in FIG. 1A, in which FIG. 3A is a state in which both clamp mechanisms are opened, FIG. 3B is a state in which the front and rear clamp mechanisms are closed, C) shows a state in which both clamp mechanisms are closed.

  First, in order to insert the workpiece 20 into the workpiece mounting portion 51, the vertical clamp mechanism 8 and the front / rear clamp mechanism 10 are opened (see FIG. 3A). Both clamp arms are opened, and the introduction path of the workpiece 20 to the workpiece mounting portion 51 is secured. At this time, the engaging pin 31 is engaged with the second groove portion 27 b of the groove 27. Further, the cam follower 43 is located on the cam surface 19b at the highest cam height, and the first contact surface 43a and the second contact surface 43b provided on the upper portion of the cam follower 43 are the roller 25 and the protruding portion 21e, respectively. Is in a state of pushing upward.

  The clamp arm 3 with the roller 25 pushed up by the cam follower 43 is lifted upward against the urging force of the coil spring 11. On the other hand, the movement of the clamp arm 3 to the upper side of the vertical direction and the right side of the horizontal direction is restricted by the curved wall portion 41 and the vertical wall portion 13. Therefore, the clamp arm 3 is rotated clockwise around the swing fulcrum x, and the work placing portion 51 is opened. Note that the engagement of the engagement pin 31 and the second groove portion 27b provided in the present embodiment without providing the curved wall portion 41 and the vertical wall portion 13 can be achieved by moving the clamp arm 3 to the right in the substantially horizontal direction. It is possible to restrict the upward movement in the substantially vertical direction. However, in the present embodiment, the two elements, the curved wall portion 41, and the vertical wall portion 13 are made to cooperate with each other, so that the movement direction of the clamp arm 3 is provided as an auxiliary member.

  Next, when the cam follower 43 moves to the inclined surface 19c of the cam surface, the clamp arm 3 is pulled in the lower right direction in the drawing by the coil spring 11. However, the movement of the roller 35 fitted to the swing fulcrum x to the right in the substantially horizontal direction is restricted by the wall member 13, so that the clamp arm 3 swings counterclockwise. Due to this swing, the engagement pin 31 and the second groove 27b are disengaged. When the cam follower 43 reaches around the middle of the inclined surface 19c, the clamp arm 3 is almost upright (see FIG. 3B).

  Further, when the cam follower 43 is lowered, the clamp arm 3 tries to further swing due to the urging force of the coil spring 11, but the vertical wall portion 15 and the clamp arm 3 are engaged, and the clamp arm 3 is moved to the left in the substantially horizontal direction. Movement is restricted. Therefore, until the cam height reaches the lowest cam surface 19a, the clamp arm 3 is lowered in a substantially vertical direction in an upright state, and the workpiece 20 is located between the contact portion 3a and the bottom surface 51b of the clamp arm 3. Pressed and held. That is, the workpiece is positioned in the vertical direction.

  Here, instead of providing the vertical wall portion 15 which is a member for restricting the swing of the clamp arm 3, the following configuration may be employed. A stepped shape in which a part of the vertical wall portion 13 is in contact with the rotating roller 35 (not in direct contact with the clamp arm 3) and the other portion is in contact with the vertical wall portion 13 of the clamp arm 3 may be employed. That is, in the present embodiment, a part of the outer peripheral surface of the rotating roller 35 extends rightward in FIG. 1A from the outer end surface 3a1 of the clamp arm 3, and the rotating roller 35 rolls on the wall surface. . Accordingly, a step is provided in the vertical wall portion 13 of the clamp arm 3, and the configuration in which the outer peripheral surface of the rotating roller 35 and the outer end surface 3 a 1 of the clamp arm 3 are in contact with the vertical wall portion 13 is also counterclockwise. Oscillation in the direction can be restricted. Further, in the above embodiment, a part of the outer periphery of the rotating roller 35 is extended from the outer end surface 3a1 of the clamp arm 3. However, the present invention is not limited to this configuration, and the outer peripheral surface of the rotating roller 35 is flush with the outer end surface 3a1. It may be made to become. Further, a cylindrical pin may be used without using the rotating roller 35.

  As described above, the clamp arm 3 that constitutes the vertical clamp mechanism descends in a substantially vertical direction with respect to the workpiece 20, so that the workpiece can be clamped with a uniform force.

  Next, the operation of the front / rear clamping mechanism 10 will be described. As shown in FIG. 3A, like the clamp arm 3, the front / rear positioning arm 21 is pushed up by the cam follower 43 and opened. The front / rear positioning arm 21 always receives an urging force in the right direction, but the workpiece mounting portion 51 is opened against the urging force by pushing up the cam follower 43.

  When the cam follower 43 is lowered, the front / rear positioning arm 21 rotates clockwise, and the work 20 is sandwiched and held between the front / rear positioning arm 21 and the wall surface 51a of the work placing portion 51 (see FIG. 3B). . At this time, the clamp arm 3 is in an upright state after the swinging rotation is completed. That is, the operation timing of both clamps is changed by changing the height between the first contact surface 43a and the second contact surface 43b of the cam follower 43. As described above, the positioning apparatus according to the embodiment is configured to position the workpiece in the vertical direction by the vertical clamp mechanism 8 after the front-and-rear clamp mechanism 10 is operated first to position the workpiece 20 in the front-rear direction. Yes (see FIG. 3C).

  In the above embodiment, the rotation rollers 25 and 35 are mounted on the other end of the clamp arm 3 with which the swing fulcrum x and the cam follower 43 abut. However, the present invention is not limited to this configuration. That is, the rotating rollers 25 and 35 are provided in order to reduce friction between members and enable high-speed driving, and it is needless to say that the rotating rollers 25 and 35 can be configured to contact directly without using a roller.

  Moreover, although the regulating member was comprised from the curved wall part 41 and a pair of vertical wall parts 13 and 15, this invention is not restricted to the aspect of said embodiment. For example, a restricting member is constituted by the engaging pin 31, the inverted L-shaped groove 27 and the curved wall portion 41, or a restricting member is constituted by the engaging pin 31, the inverted L-shaped groove 27 and the vertical wall portion 13. May be. Further, the engaging pin 31 may be provided in the clamp arm 3 and the inverted L-shaped groove 27 may be provided in the apparatus main body 29 clamp arm 3 with the same configuration as the embodiment. In this configuration, the engagement pin 31, the vertical groove portion 27a of the inverted L-shaped groove 27, and the vertical wall portion 13 function as a first restriction member, and the horizontal groove portion 27b functions as a second restriction member.

  Furthermore, as another configuration, the regulating member can be configured from the engaging pin 31 and the inverted L-shaped groove 27 with the swing fulcrum x as the center of the rotating roller 25. The vertical groove 27a of the inverted L-shaped groove is a first restricting member, and the horizontal groove 27b functions as a second restricting member.

  Next, an embodiment to which the positioning device of the present invention is applied will be described with reference to FIGS. The present embodiment is a workpiece positioning device capable of positioning a workpiece in three directions. The object held by this positioning device is a microelectronic component that constitutes a three-terminal filter. 4A is a front view of an electronic component combining a core and a metal terminal, and FIG. 4B is a cross-sectional view of the core taken along line IVB-IVB in FIG. 4A. . The electronic component 20 includes a pair of plate-like cores 52 and 53 and metal terminals 55 that connect the cores 52 and 53. The metal terminal 55 includes a curved portion bent in a U shape substantially at the center in the longitudinal direction, and a horizontal portion extending substantially horizontally from both ends of the curved portion. Each of the pair of cores 52 and 53 has a hole penetrating in the width direction at substantially the center of each side surface, and is inserted into the core hole from the tip of each horizontal portion so as to sandwich the curved portion from both sides. The electronic component 20 is held using a positioning device, which will be described later, and the horizontal portion of the metal terminal 55 is formed using a forming device as indicated by a broken line in FIG. When positioning the electronic component, the contact portion 23 (see FIG. 1) of the clamp arm 3 contacts the curved portion and the upper surface (contacted surface) of the core.

  Below, the workpiece | work positioning device for positioning the electronic component 20 is demonstrated. FIG. 5A is a plan view showing an open state of the positioning device, and FIG. 5B is a front view thereof.

  The workpiece positioning device 101 includes a vertical clamp mechanism 107, a front / rear clamp mechanism 109, a left / right clamp mechanism 111, a drive unit 105 for driving these mechanisms, and an apparatus main body on which these components are mounted. 103. The detailed configurations of the vertical clamp mechanism 107 and the longitudinal clamp mechanism 109 are omitted for the sake of clarity of the drawings, but these configurations are the same as those described with reference to FIGS.

  On the apparatus main body 103 of the positioning apparatus, a rod-shaped slider 124 that is slidable in the left-right direction in FIG. 5 is disposed. Further, a linear cam 19 is mounted on the upper surface of the slider 124. Therefore, when the slider 124 moves in the left-right direction, the cam follower 43 moves up and down as the linear cam 19 moves.

  Next, the horizontal clamp mechanism 111 will be described. The left-right direction clamp mechanism 111 includes positioning guides 113 and 115 arranged on the left and right sides with the workpiece placement unit 51 interposed therebetween. The positioning guides 113 and 115 each have an L shape and an inverted L shape when viewed from the front, and are disposed to face each other with the workpiece placement portion 51 interposed therebetween (see FIG. 5B). Moreover, the front-end | tip part of the guides 113 and 115 is formed thinly, and is made to respond | correspond to the dimension of the electronic component 20 (refer FIG. 5 (A)).

  Guide tip portions 113a and 115a of the guides 113 and 115 are fixed to one end portions of the plate-like sliding members 121 and 123, respectively. At the other end in the longitudinal direction of the sliding member 121 (123), a bar member 125 (127) that protrudes and extends in the lateral direction is provided. Further, a locking member 129 (131) that is spaced from and opposed to the rod member 125 (127) in the longitudinal direction is fixed to the base 103. Both ends of the coil spring 133 (135) are fixed to the bar member 125 (127) and the locking member 129 (131), and the bar member 125 (127) and the locking member 129 (131) approach each other. Always pulled in the direction. Further, the sliding member 121 (123) penetrates in the thickness direction of the sliding member 121 (123) (vertical direction in FIG. 5B) corresponding to the position where the rod member 125 (127) extends. An accommodation hole 137 (139) is provided.

  The linear cam 141 (143) is fixed below the sliding member 121 (123) on the slider 124 with a bolt. The linear cam 141 includes a horizontal cam surface 143a and an inclined cam surface 143b. The other linear motion cam 143 has a horizontal cam surface 141a and an inclined cam surface 141b (143b) in the same manner as the linear motion cam 141. Further, two cam followers 145 and 147 are arranged symmetrically corresponding to the respective linear cams 141 (143). Since the two cam followers 145 and 147 have the same shape and the same size, only one cam follower 145 will be described.

  An L-shaped cam follower 145 of the linear cam 141 is disposed above the linear cam 141 so as to be swingable. The cam follower 145 is configured such that the horizontal portion 145a and the vertical portion 145b are connected so as to form an angle of about 90 degrees. Further, a swing shaft 149 is fitted to the bent portion 145c, and the cam follower 145 swings on the paper surface of FIG.

  Further, the cam follower 145 is disposed so that the upper end portion of the vertical portion 145 b is engaged with the rod member 125 in the accommodation hole 137. Further, a roller 151 is rotatably attached to the tip of the horizontal portion 145a, and the roller 151 rotates along the cam surface of the linear cam 141. Accordingly, when the roller 151 passes through the horizontal cam surface 141a and enters the inclined cam surface 141b, the roller 151 gradually descends. At that time, the cam follower 145 rotates clockwise around the swing shaft 149 as a fulcrum. Since the slider 121 is biased in the direction of the locking member 129, the guide 113 moves in a direction approaching the opposing guide 115. Similarly, the guide 115 moves in a direction approaching the opposing guide 113. Therefore, when the cam follower 145 reaches the inclined cam surface 141b, the workpiece 20 is positioned in the left-right direction.

  As a driving means for moving the slider 124, the air cylinder 105 is used in this embodiment. However, it goes without saying that other driving means such as a hydraulic cylinder can be used. The piston rod 155 of the cylinder 105 is connected to the slider 124 using a joint 153, and the slider 124 moves when the piston rod 155 in FIG.

  The workpiece positioning apparatus having the above-described configuration operates as follows. First, when the workpiece positioning device is in an open state, the core 52 shown in FIG. 4A is arranged on the workpiece placing portion 51 so as to face the front in FIG. Next, when the air cylinder 105 is driven and the piston rod 153 is projected, the slider 124 moves to the right. In addition, when the slider 124 is moved, the linear motion cam 19 will be in the position shown with a broken line. Therefore, as described in the embodiment, the vertical clamping mechanism 107 and the longitudinal clamping mechanism 109 are operated to position the workpiece 20, and the lateral clamping mechanism 111 performs positioning in the lateral direction. Therefore, it is possible to perform positioning in three directions (substantially vertical direction (z direction) and substantially horizontal direction (x and y directions orthogonal to each other)) with respect to the electronic component only by providing a drive source for driving the slider. it can. The drive timing of the left / right clamp mechanism 111 can be appropriately controlled by changing the height of the cam surfaces of the linear motion cams 141 (143) and 19.

In addition, after the forming process is performed, each clamp mechanism is opened by retracting the piston rod 155, and the workpiece can be shifted to the next step.
(Modification)
The above-described embodiment is a positioning device using an air cylinder as a driving means, but a modified example is a positioning device driven manually. FIG. 6 shows a state in which the positioning device is opened, (A) is a plan view, and (B) is a front view. The left / right clamp mechanism 211 has the same configuration as that of the above-described embodiment. The cam follower 243 and the linear motion cam 219 of the vertical clamp mechanism and the front / rear direction clamp mechanism have shapes and dimensions different from those of the embodiment, but the operation mechanisms of both clamps are the same as those of the embodiment.

  One end of the slider 224 is provided with a protrusion 225 that protrudes from the side surface of the slider. The manual handle 227 includes a handle base 229 and a grip 231 extending from the handle base 231. The handle base 231 is connected to the rotation shaft 233, and the handle base 231 can rotate around the rotation shaft 233. Further, a notch 229 a is provided at the lower part of the handle base 229, and the notch 229 a is engaged with the protrusion 225. When the grip 231 is turned counterclockwise, the protrusion 225 moves to the right in FIG. 6, and the slider 224 moves to the right. Similar to the above-described embodiment, by operating one manual handle, it is possible to position the electronic component in three directions.

  The positioning device of the present embodiment has a configuration combining a front-rear direction clamp mechanism and a vertical clamp mechanism, and the positioning device of the example has a configuration combining a front-rear direction clamp mechanism, a vertical clamp mechanism, and a left-right clamp mechanism, The present invention is not limited to this configuration. That is, it goes without saying that the positioning device of the present invention may be configured to include only a positioning mechanism in the vertical direction.

  In the embodiment, a three-terminal filter is used as a workpiece, but the object of the positioning device of the present invention is not limited to this. That is, the positioning device of the present invention can be applied to any member that needs to be positioned in the vertical direction.

  The present invention can be embodied in many forms without departing from its essential characteristics. Therefore, it is needless to say that the above-described embodiment is exclusively for description and does not limit the present invention.

(A) is a partial cross-sectional front view showing an up-down direction clamp mechanism and a front-rear direction clamp mechanism, (B) is a cross-sectional view taken along line IB-IB in (A), and (C) is a plan view. (D) is an enlarged view of the ID portion of FIG. 1 (A). It is a front view which shows the front-back direction clamp mechanism, (A) shows a clamped state, (B) shows an unclamped state. It is a front view which shows the operation | movement which a vertical direction clamp mechanism and the front-back direction clamp mechanism clamp, (A) shows an unclamp state in both mechanisms, (B) shows the clamp state of the front-back direction clamp mechanism, C) shows a state where both clamps are clamped. (A) is a front view of the electronic component used in the Example of this invention, (B) shows the line IVB-IVB of (A). (A), (B) is the top view and front view of the positioning mechanism of the Example of this invention, respectively. (A), (B) is the top view and front view of the workpiece positioning apparatus of the modification of the Example of this invention, respectively. It is a front view of the conventional workpiece positioning device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work positioning device 3 Clamp arm 11 Coil spring 20 Work 21 Front / rear positioning arm 23 Contact part 25 Rotating roller 27 Groove 51 Work mounting part

Claims (8)

A workpiece positioning device for positioning a workpiece,
An apparatus main body having a workpiece placement section for placing the workpiece;
A clamp arm that has one end abutting against the abutted surface of the workpiece, and a swing fulcrum disposed away from the one end, and is swingably mounted on the apparatus body;
A pressing means for pressing the clamp arm in a direction to press the other end across the swing fulcrum with the one end of the clamp arm, and to separate the one end from the workpiece;
When the clamp arm comes into contact with the contacted surface of the workpiece, the clamp arm can only move in a substantially vertical direction with respect to the contacted surface. A first restricting member that restricts movement in a substantially parallel direction;
A second restricting member for restricting movement of the clamp arm in a substantially vertical direction and a substantially parallel direction with respect to the contacted surface in a swing range of the clamp arm;
A vertical component that moves the one end portion of the clamp arm in a direction approaching the workpiece mounting portion with respect to the substantially vertical direction, and a parallel motion that moves the one end portion in a direction away from the workpiece mounting portion with respect to the substantially parallel direction. A biasing means for imparting a biasing force to the clamp arm with a directional component;
A workpiece positioning device in which the one end portion of the clamp arm comes into contact with a contact surface of the workpiece from a substantially vertical direction to position the workpiece.   The first restricting member is a vertical wall portion provided in the apparatus main body and extending in the substantially vertical direction adjacent to the clamp arm, and the second restricting member is provided in the apparatus main body, The workpiece positioning device according to claim 1, wherein the workpiece positioning device is a curved wall portion that supports the swing fulcrum.   The workpiece positioning apparatus according to claim 2, wherein the vertical wall portion is configured by a pair of members disposed to face each other so as to sandwich the clamp arm.   The first restricting member is a pair of vertical wall portions provided in the apparatus main body and extending in the substantially vertical direction with the clamp arm interposed therebetween, and the second restricting member is provided in the apparatus main body, The workpiece positioning device according to claim 1, wherein the workpiece positioning device is a wall portion extending in the substantially parallel direction.   One of the clamp arm and the apparatus main body has an engagement pin disposed concentrically with the swing fulcrum, and the other of the clamp arm and the apparatus main body is slidably engaged with the engagement pin. The workpiece positioning device according to claim 1, wherein the first restricting member and the second restricting member are formed of inverted L-shaped grooves.   One of the clamp arm and the apparatus main body has an engagement pin disposed concentrically with the swing fulcrum, and the other of the clamp arm and the apparatus main body is slidably engaged with the engagement pin. The apparatus main body further includes a vertical wall portion extending in a substantially vertical direction adjacent to the clamp, and the first restricting member includes the inverted L-shaped groove and the vertical The workpiece positioning device according to claim 1, wherein the workpiece positioning device includes a wall portion, and the second restriction member includes an inverted L-shaped groove.   The work positioning apparatus according to any one of claims 1 to 6, wherein a rotatable roller is attached to the other end portion of the clamp arm, and the pressing means presses the rotary roller.   A clamp mechanism having second pressing means for positioning the workpiece in two directions substantially parallel to the contact surface and orthogonal to each other; and a slide sliding in the substantially parallel direction. The workpiece positioning device according to claim 1, wherein the pressing unit and the second pressing unit are mounted on the slide.

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