JP4643412B2 - Radial component insertion guide, component insertion device, and component insertion method - Google Patents

Description

  The present invention relates to an insertion guide portion used in a component insertion device for inserting an electronic component into a circuit board, and a component insertion device and a component insertion method using the insertion guide portion.

  An outline of radial parts is shown in FIG. In the figure, a radial component 1 is composed of a component body 2 which is a component main body portion, and lead wires 3 for electrically connecting the radial component 1 to terminals on the circuit board side. In the radial component 1, the lead wire 3 portion is continuously held by a supply tape 4 made of a mount tape and an adhesive tape, wound around a reel (not shown), or sequentially supplied to the component insertion device in a spelled state. . The radial component 1 generally includes a large component such as a capacitor. In a typical example, the component body 2 is 10 mm in height and width, and the length of the lead wire 3 is held on the supply tape 4. It reaches several tens of mm. The supply tape 4 has conveying holes 6 that are perforated at equal intervals, which are used when the radial parts 1 are sequentially pulled out from the reel.

  The component insertion device cuts and removes the radial component 1 supplied in this way from the supply tape 4, inserts the lead wire 3 into an insertion hole provided in a circuit board that is separately carried in, and then issues the radial component 1. Is fixed to the circuit board. In this specification, this operation is expressed as a general term “insertion of radial part”. Only the lead wire 3 portion of the radial component 1 is actually inserted into the insertion hole of the circuit board as described above, and the component body 2 portion is not inserted through the insertion hole. The body 2 is left on the circuit board surface opposite to the inserted lead wire 3 portion.

  FIG. 7 shows an outline of the component insertion device. In the figure, a component insertion device 10 includes a component supply unit 11 that continuously supplies the radial component 1 held on the supply tape 4 described above, and a substrate holding unit 12 that carries the circuit board 5 and holds it in a predetermined position. The insertion part 13 inserts the radial component 1 into the circuit board 5 from above, and the insertion guide portion 14 guides the insertion of the radial part 1 from the lower side of the circuit board 5. The entire operation of the component insertion apparatus 10 is controlled by a control unit (not shown).

  The outline of the operation of the component insertion apparatus 1 is as follows. First, the radial head 1 supplied from the component supply unit 11 is taken out by the insertion head 13, transported to a predetermined insertion position, and held. On the other hand, the board holding unit 12 constituted by an XY table positions and holds the circuit board 5 so that the insertion hole 5a of the circuit board 5 to be carried is at a predetermined insertion position. The guide pin 15 of the insertion guide portion 14 penetrates the insertion hole 5a of the circuit board 5 and extends upward from below, and captures the held lead wire 3 of the radial component 1. The captured radial component 1 is lowered while the insertion head 13 and the insertion guide portion 14 are cooperatively held, and the lead wire 3 is passed through the insertion hole 5 a together with the guide pin 15 to bring the radial component 1 into the circuit board 5. insert.

  FIG. 8 shows a situation when a component is taken out from the component supply unit 11. In the figure, the transfer chuck 21 extending from the insertion head 13 grips each lead wire 3 of one radial component 1 supplied by the supply tape 4 (usually, two lead wires extend from one component), In this gripped state, the cutter 22 cuts the lead wire 3 from the supply tape 4. At the same time, another cutter (not shown) operates in a direction perpendicular to the drawing to cut the supply tape 4 at a position indicated by a broken line, and the cut portion of the supply tape is collected and prepared for the next component supply.

  Next, the transfer chuck 21 is rotated to convey the radial component 1 to a predetermined insertion position. FIGS. 9A to 9C show the operation at the insertion position, as seen from the side surface in which the lead wires 3 rotated 90 degrees from the state shown in FIG. 8 are aligned in the vertical direction in the drawing. First, in FIG. 9A, the body chuck 23 extending from the insertion head 13 is engaged with both side surfaces of the component body 2 to hold the radial component 1 from both sides, and the pusher 24 descends from above. Further, the guide chuck 26 approaches the lead wire 3 from both side surfaces. Further, below the radial component 1, a circuit board 5 having the insertion hole 5a aligned with a predetermined component insertion position is held, and the guide pin 15 of the insertion guide portion 14 is raised and penetrates the insertion hole 5a. It is in a possible state.

  Next, in FIG. 9B, the transfer chuck 21 releases the grip of the lead wire 3, the guide chuck 26 is closed and the lead wire 3 can be received, and the pusher 24 is lowered together with the body chuck 23 from above. The part body 2 is pushed down to move the tip of the lead wire 3 into the guide chuck 26. At the same time, the guide pin 15 ascends from below and the tip of the guide pin 15 moves into the guide chuck 26 as well, and both the tips of the guide pin 15 and the lead wire 3 come into contact with each other. Since the concave portion is provided at the tip of the guide pin 15, the lead wire 3 is held in a fixed position by fitting the tip of the lead wire 3 into the concave portion.

  Next, in FIG. 9C, since the radial part 1 is sandwiched between the upper pusher 24 and the lower guide pin 15 in cooperation with each other, the body chuck 23 and the guide chuck 26 are It can be opened. Immediately after they are released, the held radial component 1 is pushed down by the pusher 24 being lowered, and at this time, the lead wire 3 is inserted through the insertion hole 5 a of the circuit board 5 together with the guide pin 15. Thereafter, the lead wire 3 through which the anvil 19 of the insertion guide portion 14 located below the circuit board 5 passes is cut to a predetermined length, and further bent to fix the radial component 1 to the circuit board 5. The process of inserting the radial component 1 into the base is completed (see, for example, Patent Document 1). Thereafter, the circuit board 5 is transferred to the solder solution, and the terminals printed on the back surface of the circuit board 5 and the bent lead wires 3 are soldered to complete the circuit board 5 including the radial component 1.

  By the way, in the direction of the side view shown in FIGS. 9A to 9C, only one guide pin 15 is seen overlapping, but actually, a plurality of lead wires 3 extend from the radial component 1, Corresponding to the plurality of lead wires 3, the same number of guide pins 15 penetrates the circuit board 5 and extends upward. Further, the pitch of the lead wires 3 is different depending on the size of the radial component 1, and the guide pins 15 located at positions corresponding to the pitch need to extend upward. More specifically, at present, pitches of 2.5 mm, 5.0 mm, and 7.5 mm are used as the pitch between the lead wires 3. The corresponding guide pin 15 is arranged at one reference guide pin at the reference position (hereinafter, this reference guide pin is indicated by reference numeral 15a) and at a position separated from the reference guide pin 15a by the respective pitches. It is necessary to prepare a total of four with the other three guide pins 15 formed.

  However, the above-described number and pitch are merely examples, and there may be, for example, three lead wires or more, and the pitch is not limited to the above. In the following description, for simplification, the number of guide pins 15 is three, and the pitch of the two guide pins 15b is 2.5 mm and 5.0 mm away from the reference guide pin 15a with reference to the reference guide pin 15a. A description will be given based on an example provided with 15c. However, the following description can be similarly applied to other numbers and other pitches. In the following description, when a specific element of a plurality of constituent elements is shown, a suffix of the specific element is added to the reference (for example, “guide pin 15b”), and only the reference (for example, “ Guide pin 15 ").

  FIG. 10 shows an outline of the insertion guide portion 14 found in the prior art (see, for example, Patent Document 2). Opposite to the circuit board 5, a component 1 in which two lead wires 3 are extended downward is arranged on the upper side, and two guide pins 15 a and 15 c can be extended upward correspondingly from below. Is arranged. Guide pins 15b (not shown) are not used. The guide pins 15b and 15c are respectively coupled to the selection rods 18b and 18c in the guide pin rod 16 as will be described later. The selection rod 18 extends downward in the guide block 30 and is coupled to the selection cylinder 31. In the selection cylinder 31, a piston is arranged corresponding to each selection rod 18, and the selection rod 18 selected by the operation of the piston is pulled down in advance so that the upward movement height is restricted. It is configured.

  An engaging groove 32 is dug above the guide block 30, and a lifting pin 42 provided on one end side of the lifting lever 41 is fitted in the engaging groove 32. The other end of the elevating lever 41 is pivotally supported, and a cam follower 43 is fixed near the center of the elevating lever 41 and abuts against an eccentric disc-shaped cam plate 45. Therefore, the raising / lowering lever 41 swings according to the rotation of the cam plate 45, and the guide block 30 can be moved up and down via the raising / lowering pins 42.

  A rotating plate 35 is attached to the guide pin rod 16, and a tip of a turning rod 38 extending from one end of a guide pin turning lever 37 is connected to the turning pin 36 provided on the outer periphery of the rotating plate 35. The other end of the guide pin turning lever 37 is in contact with the outer peripheral portion of the cam plate 40 via a pin 39, and the guide pin turning lever 37 can turn according to the rotation of the cam plate 40. This turning leads to the movement of the turning rod 38 in the axial direction, and the rotation plate 35 rotates via the turning pin 36 by this movement.

  The insertion guide portion 14 configured as described above operates as follows. The radial component 1 inserted into the circuit board 5 is held facing the circuit board 5. The guide pin 15b that does not correspond to the pitch of the lead wire 3 of the component 1 and is therefore not used for the insertion operation is selected, and the guide pin in the selection cylinder 31 corresponding to the guide pin 15b is operated and selected. The selection rod 18b connected to 15b is pulled down. The cam plate 40 rotates to rotate the guide pin turning lever 37 by a predetermined angle, and the rotation plate 35 and the guide pin rod 16 are rotated to a predetermined angle by the movement of the turning rod 38. This is to arrange the guide pins 15a and 15c corresponding to the insertion angle of the radial component 1 to be inserted (the arrangement direction of the lead wires 3). As the guide pin rod 16 rotates, the selection rod 18 housed therein is elastically twisted, and the guide pin 15 attached thereto is arranged in correspondence with the lead wire 3 of the radial component 1.

  Next, the cam plate 45 is rotated to swing the elevating lever 41 via the cam follower 43, whereby the elevating pin 42 of the elevating lever 41 lifts the entire guide block 30. As a result, the selection rod 18 and the guide pin 15 rise, and the guide pins 15a and 15c corresponding to the lead wire 3 of the radial component 1 extend through the insertion hole 5a of the circuit board 5 to the lead wire 3, Capture. However, since the selected selection rod 18b and the guide pin 15b described above are pulled down by the selection cylinder 31 in advance, even if the selection rod 18b and the guide pin 15b are lifted together with the guide block 30, they do not rise to the lower level of the circuit board 5.

  When each of the guide pins 15a and 15c captures the corresponding lead wire 3, the cam plate 45 is rotated next, and the elevating lever 41 swings downward to pull down the guide block 30. As a result, the guide pins 15a and 15c become the lead wires. 3 passes through the insertion hole 5a of the circuit board 5 to complete the insertion of the lead wire 3 and the fixing operation. Next, the necessary selection rod 18 is selected again corresponding to the new radial component 1, and the operation so far is repeated.

  11 and 12 show enlarged main components of the insertion guide portion 14 shown in FIG. In FIG. 11, three guide pins 15 a to 15 c are accommodated in the cartridge 20. The reference guide pin 15a is located on the leftmost side of the drawing, and guide pins 15b and 15c which are shifted to the right by 2.5 mm pitches are arranged below. Inside the cartridge 20, each guide pin 15 a to 15 c is provided with a stopper 27, and a spring 28 is disposed between the stopper 27 and the bottom surface of the cartridge 20. FIG. 11 shows a part of the cartridge 20 cut open.

  A bulging engagement portion 29 is provided at the lower end of the guide pins 15b and 15c. Since the leftmost reference guide pin 15a is always used for component insertion, it is not selected that it is not used, and there is no need to restrain it downward, so the engaging portion 29 is unnecessary. is there.

  FIG. 12 shows the engagement between the guide pins 15 b and 15 c in the cartridge 20 and the selection rods 18 b and 18 c in the guide pin rod 16. Except for the reference guide pin 15a, the engagement portion 29 at the lower end of the other guide pins 15b and 15c is fitted into the engagement groove 17 provided in the cylindrical selection rods 18b and 18c. A locking portion (not shown) is provided at the upper ends of the selection rods 18b and 18c, and the engaging portions 29 of the guide pins 15b and 15c are restrained by the locking portions, so that the guide pins 15b and 15c are not pulled upward. Disappear. Further, as will be described later, the selected guide pin 15 is restrained downward by the downward movement of the selection rod 18. In the illustrated example, since guide pins 15a and 15c are used corresponding to the lead wire 3 of the component 1, the guide pin 15b is selected and the central guide pin 15b is pulled down by the selection rod 18b and restrained downward. The

In FIG. 13, the guide pin 15b selected in this way is restrained downward by the selection cylinder 31 together with the corresponding selection rod 18b, while the selection rod 18c not selected (unconstrained) and the guide connected thereto. Two pins 15c and a reference guide pin 15a are lifted together with the guide block 30 and the cartridge 20, and each of the corresponding lead wires 3 of the component 1 above which the two guide pins 15a and 15c pass through the circuit board 5 are provided. It is in contact with and shows a state where it is captured. In the unlikely event that the selected guide pin 15b is not restrained and rises similarly to the other guide pins 15, the guide pin 15b collides with the circuit board 5. However, even in such a case, the spring 28 (see FIG. 11) in the cartridge 20 absorbs the relative movement with the subsequent cartridge 20, so that there is a risk of damaging components already mounted on the circuit board 5. However, it does not hinder the rise of the other guide pins 15.
Japanese Laid-Open Patent Publication No. 5-198967 Japanese Patent Laid-Open No. 10-4298

  However, there is room for improvement in the above-described conventional insertion guide portion 14. There is always a need in the market to increase the productivity and speed of radial part insertion. The current cycle time is shortened to about 0.25 seconds per part, but there is a need to further increase the cycle time. However, in the conventional system as described above, it is difficult to meet the needs for the following reasons.

First, as the cycle time is shortened, the vertical movement speed of the cartridge 20 is increased, and the cartridge 20 is caused by a difference in followability between the cartridge 20 and the selection rod 18 when lowered.
A phenomenon occurs in which the lower end of the lens collides with the upper end of the selection rod 18 (see FIG. 12). The guide pin 15 in the cartridge 20 is a consumable item and is replaced after a certain amount of use. However, the engagement groove 17 in the selection rod 18 is deformed and crushed by the collision, and the guide pin 15 cannot be removed. It is causing evil. In this case, it becomes necessary to replace the guide pin 15 together with the selection rod 18, which is wasteful.

  FIG. 14 schematically shows one selection rod 18. The selection rod 18 includes an engaging portion 46 at the upper end, an intermediate pulling portion 47, and a restraining portion 48 at the lower end. The engaging portion 46 constitutes the engaging groove 17 into which the engaging portion 29 of the guide pin 15 described with reference to FIG. 12 is fitted. In addition, the lower end restraining portion 48 is provided with a fixture 33 fixed to the selection cylinder 31 for restraining the selection rod 18 shown in FIG. 10 downward. In the intermediate pulling portion 47, a spring 49 is disposed in the cylindrical guide tube 34, and the engaging portion 46 at the upper end is always pulled downward in the drawing. In this configuration, when the selection rod 18 is lowered, the engaging portion 46 is forcibly pulled down by the action of the spring 49 so as to avoid the collision with the lower end of the cartridge 20 described above.

  By configuring the selection rod 18 as shown in FIG. 14, for example, it has succeeded in significantly shortening the cycle time so far which was about 0.6 seconds. However, as the cycle time becomes about 0.25 seconds, as described above, the tension effect by the spring 49 has reached its limit. Although schematically depicted in FIG. 14, the outer diameter of the guide tube 34 is about 3.0 mm, the outer diameter of the spring 49 is only about 2.0 mm, and there is a limit to further strengthening the tensile force, It is difficult to respond because it increases the reaction force against the operating force.

  Further, the number of cases in which the spring 49 is cut by the high-speed repeated extension operation while sliding inside the narrow guide tube 34 is increased, and as a result of the removal of the pulling force of the engaging portion 46 by this cutting, the cartridge 20 and the selection rod 18 Collisions are more likely to occur. In addition, once the spring 49 is cut, it is difficult to replace the structure 49, and it is also uneconomical that replacement for each selection rod 18 is required.

  As another obstacle to speeding up, there is a problem of responsiveness of the selection cylinder 31 that restrains the selection rod 18. For this reason, at present, extra time is spent for operating the selection cylinder 31 every time the selection of the selection rod 18 is switched. Further, it is preferable to reduce the weight of the moving member as much as possible in order to move the guide pin 15 up and down in response to the increase in speed, to reduce the load on the power system, and to improve the responsiveness by lowering the inertia.

  As another problem with the prior art, when the guide pin rod 16 is turned in accordance with the direction of the lead wire 3, the insertion guide portion 14 according to the prior art has a problem in operability and durability. At present, as described with reference to FIG. 10, the guide pin rod 16 is turned by the rotation of the rotating plate 35, and the selection rod 18 inside thereof is elastically deformed to follow the turn. At this time, the drag force for turning the guide pin rod 16 is large, and the selection rods 18 are twisted and contacted with each other, thereby deteriorating operability and durability.

  An object of the present invention is to solve the above-described problems in the prior art, and to provide an insertion guide portion that is excellent in high-speed followability and durability, has a simple structure, and is inexpensive.

  The present invention eliminates the selection rod in the prior art and replaces it with a light and flexible wire, and eliminates the use of the selection cylinder in the wire restraining mechanism, thereby eliminating the above-described problems. Includes the following:

  In other words, according to one aspect of the present invention, there is provided a cartridge that houses a plurality of guide pins arranged corresponding to various lead wire pitches of radial parts, a lifting mechanism that lifts and lowers the cartridge, and the cartridge that leads the lead. A turning mechanism that turns according to the arrangement direction of the lines, and a selected guide pin that is not used for inserting the radial part is restrained from below to avoid contact with the circuit board due to the rising of the guide pin. A selection mechanism, and only a guide pin necessary for inserting a radial part is raised by raising the cartridge to penetrate the insertion hole of the circuit board, and a part that passes through the insertion hole after capturing the lead wire of the radial part An insertion guide portion of an insertion device, wherein the selection mechanism includes a wire having one end engaged with the lower end of each guide pin, For an insertion guide portion, characterized in that it is composed of a restraining mechanism for preventing the rise of the guide pin to restrain the wire corresponding to when the guide pin is selected.

  The other end extending below the wire is fixed to a fixed part via a moving pulley, and the restraining mechanism may be a restraining member that prevents the moving pulley from rising. Alternatively, instead of the movable pulley, the lower end of the wire is fixed to a lever that is pivotally supported by a fixed portion and swings, and the restraining mechanism is a restraining member that prevents the lever from swinging upward. Can do.

  As an alternative to the restraining mechanism, pull the other end of the wire corresponding to the selected guide pin, and pull down the selected guide pin by a predetermined amount in advance downward, and each guide pin that rises when the cartridge is raised Each wire can be relaxed in synchronism, and an absorbing mechanism that can absorb slack in each wire in synchronism with each guide pin that descends when the cartridge is lowered. The manipulator may be an air / hydraulic cylinder or a motor that winds the other end of the wire. The absorbing mechanism includes a lever that swings in synchronization with an elevating mechanism that elevates and lowers the cartridge, and a pulley that is attached to the lever. The lever engages with the wire, and the lever when the cartridge is lowered And a pulley that moves in a direction to absorb the slackness of the wire.

  As a further alternative to the restraining mechanism, the motor is provided with a reel that winds up the other end that extends below the wire, and a clutch that connects and disconnects the rotating shaft of the motor and the reel, and inserts a component. During operation, the motor corresponding to the selected guide pin always stops rotating, and the clutch of the motor is always connected to restrain the wire from rising, and corresponds to the guide pin necessary for insertion. The motor stops rotating while the cartridge is raised, and allows the wire to be unwound and raised from the reel while the clutch of the motor is separated, and the clutch is connected while the cartridge is lowered. And the motor rotates in synchronism with the lowering of the cartridge to move the wire to a predetermined amount at a predetermined speed. It may be wound on the reel.

  The clutch is abolished from the restraint mechanism including the motor described above, and the motor corresponding to the selected guide pin is always stopped during the part insertion operation to restrain the wire from rising, and corresponds to the guide pin necessary for insertion. A motor that rotates the wire so that the wire is unwound from the reel by a predetermined amount at a predetermined speed in synchronism with the ascent of the cartridge while the cartridge is ascending. The wire may be wound up by a predetermined amount at a predetermined speed in synchronization with the descent.

  According to another aspect of the present invention, a component supply unit that supplies a radial component, a substrate holding unit that carries a circuit board and holds the circuit board in a predetermined insertion position, a radial component is taken out from the component supply unit, An insertion head that holds the circuit board that is held opposite to the circuit board, and an insertion guide portion that is disposed on the opposite side of the insertion head with respect to the circuit board, and a guide pin is inserted into an insertion hole provided in the circuit board. An insertion guide portion that extends through and guides a lead wire of the radial component to pass through the insertion hole, wherein the insertion guide portion is one of the insertion guides described above. The present invention relates to a radial component insertion device.

  According to still another aspect of the present invention, a lead wire of a radial component held opposite to a circuit board is captured by a guide pin extending through an insertion hole of the circuit board, and together with the captured lead wire A radial component insertion method for inserting a radial component into a circuit board by causing the lead wire to pass through the insertion hole by returning the guide pin to a position before passing through the insertion hole. When a cartridge containing a plurality of correspondingly arranged guide pins is raised toward the circuit board for capturing the lead wire, the wire engaged with the lower end of the guide pins that are not used is prevented from rising. A radial component insertion method characterized by avoiding contact between the unused guide pin and the circuit board, and raising only the guide pin necessary for insertion to capture the lead wire About.

  By implementing the insertion guide portion, the component insertion device using the insertion guide portion, and the component insertion method according to the present invention, it is possible to further increase the speed in the component insertion process, and to improve the durability of the insertion guide portion. The improvement can contribute to the improvement of part insertion productivity and the reduction of the manufacturing cost, including the reduction of the setup time.

  An insertion guide part and a component insertion device according to a first embodiment of the present invention will be described with reference to the drawings. The basic configuration of the insertion guide unit according to the present embodiment is the same as that shown in the prior art, and differences from the prior art will be mainly described below. Further, the same reference numerals are used for the same components as those described in the prior art.

  FIG. 1 schematically shows a main part of an insertion guide part according to the present embodiment. In the drawing, the insertion guide portion 50 according to the present embodiment is provided corresponding to the cartridge 20 containing a plurality of guide pins 15 (15a to 15c) and the guide pins 15b and 15c excluding the reference guide pin 15a. The movable pulley 51 (51b, 51c) and a selection mechanism 55 including a wire 52 are included. The cartridge 20 can have the same configuration as that described in the prior art. In the present embodiment, the cartridge 20 can be directly moved up and down by an elevating mechanism 56 indicated by a broken line, and the elevating mechanism 56 described in the prior art (elevating lever 41, elevating pin 42, cam follower shown in FIG. 10). 43, cam plate 45, etc.) can be used. Although not shown in FIG. 1, the turning mechanism for turning the cartridge 20 in accordance with the direction of the lead wire 3 has also been described in the prior art (the rotating plate 35, the guide pin turning lever 37, the turning shown in FIG. A mechanism similar to the rod 38, the cam plate 40, etc.) can be used.

  The wire 52 is not particularly limited to a material such as a metal or a synthetic resin, and may be any wire as long as it has sufficient strength against tension of the spring 28, flexibility against bending, and sufficient durability against repeated use.

  The wire 52 that can be restrained with the guide pins 15 facing downward has a hook 53 that can engage with the engaging portion 29 of the guide pin 15 at one end, and the other end such as a base portion of a component insertion device, for example. It is fixed to the fixed element. The wire 52 that engages with the guide pin 15 via the hook 53 passes through the movable pulley 51 shown below in a U shape and is fixed to the fixing element, thereby preventing the guide pin 15 from being pulled upward. is doing.

  The movable pulley 51 is configured to move up and down following the vertical movement of the cartridge 20 by the action of the wire 52. FIG. 1 shows a state in which the guide pin 15b shown on the left side is selected, and the corresponding moving pulley 51b is engaged with a restraining member 54 that blocks the moving pulley 51b and prevents its upward movement. ing. The restraining member 54 may be a solenoid that enters and exits in a direction perpendicular to the drawing and engages the movable pulley 51, for example. The movable pulley 51 and the restraining member 54 constitute a restraining mechanism that restrains the wire 52 and the guide pin 15 from rising.

  During the operation of the insertion guide 50 configured as described above, the restraining member 54 of the restraining mechanism selected in a state where the cartridge 20 is positioned below protrudes, and the corresponding movable pulley 51b (in the case of illustration, the same applies hereinafter). Restrains the upward movement of. The other movable pulley 51c is not restrained and can move upward. When the cartridge 20 is raised by the operation of the lifting mechanism 56 in this state, the wire 52 is pulled up via the hook 53 in the unselected (unconstrained) movable pulley 51c as the cartridge 20 is raised. Along with this, the movable pulley 51c rises, so that the guide pin 51b rises together with the cartridge 20. As a result, the reference guide pin 15a and the unselected guide pin 15c rise through the insertion hole 5a of the circuit board 5 (not shown), and the radial component 1 (hereinafter simply referred to as “component 1”). The lead wire 3 is captured.

  On the other hand, since the movable pulley 51b selected and restrained is prevented from moving upward by the restraining member 54, even if the cartridge 20 is lifted, it is located above the guide pin 15b via the wire 52 and the hook 53. Restrain the movement of Therefore, a relative movement occurs between the guide pin 15b and the cartridge 20, and the relative movement is absorbed by the spring 28 corresponding to the guide pin 15b in the cartridge 20.

  When the lead wire 3 is captured, the elevating mechanism 56 next operates in the reverse direction (downward), and the cartridge 20 starts to descend. As a result, the lead wire 3 captured together with the two guide pins 15 a and 15 c descends through the insertion hole 5 a of the circuit board 5, and the component 1 is inserted into the circuit board 5. At this time, since the mass of the wire 52 is light, the followability to the lowering of the cartridge 20 is good, and there is no obstacle that collides with the lower end of the cartridge 20. Although the movable pulley 51c descends as the cartridge 20 descends, the descending speed is ½ that of the cartridge 20, so the followability is good. In addition, the looseness of the wire 52 when descending can be absorbed by the dead weight of the movable pulley 51. According to the principle of the pulley, the load due to the load of the moving pulley 51c when the cartridge 20 is raised is ½ of the weight of the moving pulley 51b.

  On the other hand, the guide pin 15b on the selected and restrained side is stretched by the spring 28 compressed inside as the cartridge 20 descends, and the cartridge 20 reaches its bottom dead center and returns to its original state. Thereafter, the restraint of the movable pulley 51b by the restraining member 54 is released, and it is prepared for the next selection. Thereafter, the operation so far is repeated.

When the insertion guide part 50 using the wire 52 according to the above-described embodiment is compared with the insertion guide part 14 using the selection rod 18 according to the conventional technique, the following advantages can be given.
(1) There is no danger of collision even when the cartridge 20 moves up and down at high speed. As a result, the high-speed followability can be remarkably improved.
(2) Replacement of the guide pin 15 is simplified only by attaching and detaching the hook 53. Further, the guide pin 15 does not become detachable due to a collision or the like.
(3) Since the highly flexible wire 52 is twisted to cope with the turning of the cartridge 20, the drag force against the turning is small. Moreover, it is excellent in durability.
(4) The restraining operation can be performed only by an instantaneous expansion / contraction operation of the restraining member 54 (solenoid) protruding in the axial direction with respect to the movable pulley 51, and the followability is remarkably superior to the selection cylinder 31. (In the past, the selected cylinder was stroked 35 mm.)
(5) Since no spring is used and there is no frictional engagement, durability is increased and noise is reduced.
(6) The power load is reduced by reducing the weight of the moving member, and the followability is improved by reducing the inertia.
(7) The entire structure is simple, the assembly is easy, and the manufacturing cost is reduced.

  FIG. 2 shows an insertion guide portion 50a of another aspect that is an alternative to the present embodiment. Here, a restraining lever 58 is used instead of the movable pulley 51. One end of the restraining lever 58 is pivotally supported on an apparatus base or the like, and is fixed to the wire 52 at the other end which is a free end. If the weight of the restraining lever 58 is appropriate, the slack when the wire 52 is lowered can be absorbed, but a weight may be attached if necessary. The other end of the wire 52 is connected to the engaging portion 29 of the guide pin 15 using the hook 53 as in the previous embodiment. Further, a restraining member 54 that blocks the restraining lever 58 and restrains upward swinging is disposed so as to be engageable with the restraining lever 58. The restraining lever 58 and the restraining member 54 constitute a restraining mechanism.

  The operation of the insertion guide portion 50a configured as described above is basically the same as the configuration using the above-described moving pulley 51, and the restraining lever 58b (in the illustrated case, the same applies hereinafter) corresponding to the selected guide pin 15b. )), The restraining member 54 protrudes and is prevented from swinging upward, whereby the rise of the guide pin 15b connected to the restraining lever 58 via the wire 52 is prevented. The unselected restraining lever 58b can freely swing and swings as the cartridge 20 is lifted, so that the guide pin 15c connected to the restraining lever 51c via the wire 52 can be lifted.

  After the reference guide pin 15 a and the guide pin 15 c capture the lead wire 3 of the component 1 (not shown), the cartridge 20 is lowered and the component 1 is inserted into the circuit board 5. At this time, as the cartridge 20 is lowered, the restraining lever 58c swings downward due to its own weight and pulls down the wire 52, so that no loosening of the wire occurs. On the other hand, in the example of the selected restraining lever 58b, the spring 49 corresponding to the guide pin 15b extends as the cartridge 20 descends, and the guide pin 15b and the cartridge 20 move relative to each other to bring the cartridge 20 to the bottom dead center. Reach. Thereafter, the operation so far is repeated.

  Although not shown, a damping mechanism may be provided at the shaft support portion of the restraining lever 58 if necessary in order to attenuate the vibration after the restraining lever 58 swings. The preferential difference with the insertion guide part 14 by a prior art is the same as that of what was mentioned above.

  Next, the insertion guide part of 2nd Embodiment concerning this invention is demonstrated. In the first embodiment, the looseness of the wire 52 when the wire 52 descends is absorbed by the own weight of the movable pulley 51 and the restraining lever 58. This simplifies the structure by eliminating the need for a power system such as the selection cylinder 31 and a spring, but it cannot be said that there is no possibility of being unable to follow up when the component insertion operation is further accelerated. In order to improve this, when the weight of the movable pulley 51 and the restraining lever 58 is increased or reinforced with a spring, the load when the cartridge 20 is raised is increased, and the operation system needs to be strengthened. Can also occur. In the present embodiment, an insertion guide portion is provided that reduces the weight of the restraining mechanism that prevents the guide pin 15 from moving upward by using the wire 52 and at the same time improves the follow-up performance against the looseness of the wire 52.

  FIG. 3 shows the insertion guide portion 60 according to the present embodiment. In the drawing, an insertion guide portion 60 includes a cartridge 20 that stores a plurality of guide pins 15, a selection mechanism 65 including a wire 52 and a motor 61 (61 b, 61 c) provided corresponding to each guide pin 15, and an elevation A lifting mechanism partially shown in the drawing including the lever 41 and a turning mechanism (not shown) are included. The lifting mechanism and the turning mechanism are basically the same as those according to the prior art shown in FIG. In the present embodiment, an absorption mechanism including an operation lever 62 for absorbing the slack of the wire 52 is further included as a part of the selection mechanism.

  One end of the wire 52 that can restrain the guide pins 15 facing downward is engaged with an engaging portion 29 provided at the lower end of the guide pin 15 via a hook 53, and the other end is connected to a motor 61 (61b, 61c) is fixed to a reel 63 attached to the rotating shaft so as to be able to be wound. In the middle, the wire 52 is engaged with a pulley 64 provided on the operation lever 62. The operation lever 62 is formed by an arm that integrally extends from the elevating lever 41 for elevating the guide pin 15 shown in FIG. In order to achieve engagement with the pulley 64, a fixed roller 66 is further engaged with the wire 52. Although one pulley 64 is shown in the drawing, an individual pulley 64 engaged for each wire 52 is attached. Further, the operation lever 62 only needs to be able to operate in synchronization with the lifting lever 41 and does not necessarily have to be formed integrally with the lifting lever 41.

  During the operation of the insertion guide portion 60 configured as described above, the motor 61b (in the illustrated case, the same applies hereinafter) corresponding to the selected guide pin 15b rotates with the cartridge 20 lowered downward. The wire 52 connected to the motor 61b is wound up by a certain length. As a result, the guide pin 15b connected to the wire 52 is pulled downward. The guide pin 15 b compresses the corresponding spring 28 in the cartridge 20 and moves downward relative to the cartridge 20. On the other hand, the motor 61c (in the case of illustration) corresponding to the guide pin 15c that is not selected does not rotate, and therefore there is no relative movement between the guide pin 15c and the cartridge 20.

  Next, when the raising / lowering lever 41 for raising and lowering the cartridge 20 is rotated and the cartridge 20 is lifted upward, the integrated operation lever 62 is also simultaneously rotated, and the tension of the wire 52 engaged with the pulley 64 is eased. As a result, each wire 52 can follow the rising of the cartridge 20 without being restrained. At this time, the selected guide pin 15b also rises at the same time as the unselected guide pin 15c (same as above), but the selected guide pin 15b has been pulled a certain length in advance by the rotation of the motor 61. The guide pin 15b does not reach a height that penetrates the circuit board 5 (not shown). Due to the rise, only the reference guide pin 15a and the unselected guide pin 15c penetrate the circuit board 5 and capture the lead wire 3 of the corresponding component 1.

  Next, the cartridge 20 starts to descend by the reverse rotation of the elevating lever 41, and the lead wire 3 captured by the guide pins 15a and 15c penetrates the circuit board 5 to insert components. At this time, since the operation lever 62 also rotates simultaneously with the rotation of the elevating lever 41, the slack of the wire 52 due to the lowering of the guide pin 15 is absorbed by the movement of the pulley 64, and no slack occurs. The operation lever 62 and the pulley 64 constitute an absorption mechanism for absorbing the slack of the wire 52. After the cartridge 20 reaches the bottom dead center, the motor 61b corresponding to the selected guide pin 15b rotates in the direction of loosening the wire 52 to return the guide pin 15b to its original position and return to the original state. Thereafter, the above operation is repeated.

  When the insertion guide portion according to the present embodiment is compared with that according to the prior art, it has the same advantages as those shown in the first embodiment, and sufficient follow-up for further high-speed rotation. It has the feature of having sex. The driving of the selected motor 61c and the synchronization with the raising and lowering of the cartridge are controlled by a control unit of a component insertion device (not shown). As the manipulator for pulling the wire 52 in advance, the exemplified motor is preferable from the viewpoint of high-speed followability, but an air cylinder or a hydraulic cylinder may be used.

  Next, an insertion guide portion according to a third embodiment of the present invention will be described. FIG. 4 shows the insertion guide part 70 according to the present embodiment. In the drawing, an insertion guide portion 70 is shown in part by a broken line, with a cartridge 20 containing a plurality of guide pins 15, a selection mechanism 75 comprising a wire 52 and a motor 71 provided corresponding to each guide pin 15. An elevating mechanism and a turning mechanism (not shown) are included. The structures of the lifting mechanism and the turning mechanism can be basically the same as those of the prior art shown in FIG.

  One end of the wire 52 that can restrain each guide pin 15 downward is engaged with an engaging portion 29 provided at the lower end of the guide pin 15 via a hook 53, and the other end is a rotation shaft of the motor 71. The reel 63 is fixed to the reel 63 so that it can be wound. The motor 71 used in the present embodiment is provided with a clutch 72 such as an electromagnetic clutch, and the connection and separation between the motor 71 and the reel 63 can be controlled.

  When the insertion guide portion 70 configured as described above is operated, the clutch 72 of the motor 71b corresponding to the selected guide pin 15b (in the case of illustration, the same applies hereinafter) operates with the cartridge 20 lowered downward. Then, the rotating shaft of the motor 71b and the reel 63 are connected. In this connected state, free rotation of the reel 63 is prevented by the drag of the motor 71. The clutch 72 of the motor 71c that has not been selected is kept in the separated state, and the reel 63 can be rotated and the wire 52 can be unwound.

  Next, when the lifting mechanism 56 operates to raise the cartridge 20, the reference guide pin 15a and the unselected guide pin 15c rise as the cartridge 20 rises. At this time, the wire 52 connected to the guide pin 15c. Is unwound from the rotatable reel 63 and follows the rise of the guide pin 15c. On the other hand, since the reel 63 is restrained by the action of the clutch 72, the selected guide pin 15b is prevented from rising without the wire 52 being unwound. For this reason, relative movement occurs between the rising cartridge 20 and the guide pin 15b, and the relative movement during this time is absorbed by the corresponding spring 28 being compressed.

  The raised reference guide pin 15a and the unselected guide pin 15c penetrate the circuit board 5 (not shown) and capture the lead wire 3 of the component 1. When the cartridge 20 reaches the top dead center shown in the drawing, the clutch 72 of the motor 71c that has been separated until now operates, and the rotating shaft of the motor 71c and the reel 63 are connected.

  Next, the raising / lowering mechanism 56 rotates in the reverse direction to lower the cartridge 20, and the lead wire 3 captured by each guide pin 15 is passed through the circuit board 5 to insert a component. At this time, the motor 71c corresponding to the guide pin 15c rotates in synchronization with the lowering of the cartridge 20, and the reel 63 connected to the rotating shaft winds the corresponding wire 52, so that the looseness of the wire 52 is absorbed. During the lowering of the cartridge 20, the motor 71b corresponding to the selected guide pin 15b does not have to take up the wire 52 and maintains the stopped state. The slack of the wire 52 during this time is absorbed by the extension of the spring 28 in the cartridge 20. The cartridge 20 reaches the bottom dead center, the motor 71c stops, the clutches 72 of all the motors 71 are released to the separated state, and return to the original state. Thereafter, the operation so far is repeated.

  When the insertion guide part 70 according to the present embodiment is compared with the insertion guide part 14 according to the prior art, it has the same advantages as the contents described in the first embodiment, and further speeding up. Correspondence becomes possible.

  FIG. 5 shows an alternative insertion guide portion 70a which is another aspect of the present embodiment. In this insertion guide portion 70 a, the clutch 72 that makes contact with and away from the rotating shaft of the motor 71 described above is eliminated, and the guide pin 15 is selectively restricted only by reciprocating rotation of the motor 71. The configuration of the insertion guide portion 70a according to this aspect can be the same as that of the insertion guide portion 70 described above except that the clutch 72 is eliminated.

  During the operation of the insertion guide portion 70a configured as described above, the motor 71b corresponding to the selected guide pin 15b (in the illustrated case, the same applies hereinafter) is non-rotating, and the unselected motor 71c is connected from the reel 63 to the wire 52 Rotation in the direction of unwinding is controlled. When the cartridge 20 rises in this state, the motor 71c that is not selected rotates in synchronization with this, and the wire 52 is allowed to rise following the rise of the cartridge 20. As a result, the guide pin 15 c that is not selected rises together with the cartridge 20. On the other hand, the wire 52 corresponding to the selected motor 71b is restrained because the motor 71b is not rotating, and cannot follow the rise of the cartridge 20. The relative movement between the cartridge 20 and the selected guide pin 15b during this period is absorbed by the spring 28 in the cartridge 20.

  When the cartridge 20 reaches the top dead center, the reference guide pin 15a and the guide pin 15c penetrating the circuit board 5 (not shown) capture the lead wire 3 of the component 1. Thereafter, the cartridge 20 starts to descend, but at this time, the motor 71 c is switched to the reverse rotation control in which the wire 52 is wound by the reel 63. As a result of the motor 71c rotating and winding the wire 52 in synchronism with the lowering of the cartridge 20, the wire 52 is not slackened. The selected motor 71b is kept non-rotating, and the slack of the wire 52 during this time is absorbed by the spring 28 in the cartridge 20. The cartridge 20 reaches the bottom dead center, the control of the motor 71 is released, and the next insertion operation is prepared.

  Also in the insertion guide part 70a concerning this aspect, when compared with a prior art, the same advantage as the insertion guide part 70 mentioned above can be provided.

  Although the insertion guide portion according to the present invention has been described above, the present invention also includes a component insertion device including the insertion guide portion described in each embodiment. That is, a component insertion device according to the present invention includes a component supply unit that supplies radial components, a board holding unit that carries a circuit board and holds the circuit board in a predetermined insertion position, and takes out radial components from the component supply unit. A component insertion device comprising: an insertion head that holds the circuit board opposite to the held circuit board; and an insertion guide portion that guides a lead wire of the radial component and passes the insertion hole of the circuit board, The insertion guide portion is any one of the above-described insertion guide portions.

  Furthermore, the present invention also includes a component insertion method using each of the insertion guide portions described above. The radial component insertion method according to the present invention is selected when a cartridge containing a plurality of guide pins corresponding to different pitches of the lead wires of the component is raised toward the circuit board to capture the lead wires. The wire engaged with the lower end of the unused guide pin is prevented from rising to avoid contact between the unused guide pin and the circuit board, and only the guide pin necessary for insertion is raised to capture the lead wire. It is characterized by doing.

  The insertion guide portion, the component insertion device, and the component insertion method according to the present invention can be widely used in the technical field of component insertion for inserting a radial component into a circuit board.

It is a schematic side view which shows the principal part of the insertion guide part of embodiment concerning this invention. It is a schematic side view which shows the alternative aspect of the insertion guide part shown in FIG. It is a schematic side view which shows the principal part of the insertion guide part of other embodiment concerning this invention. It is a schematic side view which shows the principal part of the insertion guide part of further another embodiment concerning this invention. It is a schematic side view which shows the alternative aspect of the insertion guide part shown in FIG. It is a perspective view which shows schematic structure of radial components. It is a perspective view which shows the outline | summary of a radial component insertion apparatus. It is a side view which shows the components extraction operation | movement of a radial component insertion apparatus. It is side surface partial sectional drawing which shows the component insertion operation | movement of a radial component insertion apparatus. It is a perspective view which shows the structure of the insertion guide part by a prior art. It is a perspective view which shows the structure of the cartridge of the insertion guide part shown in FIG. It is a perspective view which shows the engagement relation of the cartridge of a insertion guide part shown in FIG. 10, and a guide pin rod. It is a cross-sectional side view which shows the selection operation | movement of the insertion guide part shown in FIG. It is a fragmentary sectional perspective view which shows the structure of the selection rod of the insertion guide part shown in FIG.

Explanation of symbols

  1. 2. Radial parts 4. Lead wire Circuit board, 5a. Insertion hole, 10. 13. component insertion device; 15. insertion guide part; Guide pins, 15a. Reference guide pin, 18. Selection rod, 20. Cartridge, 28. Spring, 41. Lifting lever, 42. Lifting pins, 50. Insertion guide part, 51. Moving pulley, 52. Wire, 54. Restraining member, 55. Selection mechanism, 56. Lifting mechanism, 58. Restraint lever, 60. Insertion guide, 61. Motor, 62. Operating lever, 64. Pulley, 65. Selection mechanism, 70. Insertion guide, 71. Motor, 72. Clutch, 75. Selection mechanism.

Claims (10)

A cartridge for storing a plurality of guide pins arranged corresponding to various lead wire pitches of radial parts;
An elevating mechanism for elevating the cartridge;
A turning mechanism for turning the cartridge corresponding to the arrangement direction of the lead wires;
A guide mechanism required to insert the radial component, and a selection mechanism that restrains a selected guide pin that is not used for inserting the radial component from below to avoid contact with the circuit board due to the rising of the guide pin. In the insertion guide portion of the component insertion device that raises only the pin by raising the cartridge, penetrates the insertion hole of the circuit board, passes the insertion hole after capturing the lead wire of the radial component,
The selection mechanism includes a wire having one end engaged with the lower end of each guide pin, and a restraining mechanism that restrains the corresponding wire when the guide pin is selected and prevents the guide pin from rising. An insertion guide part characterized by being made.   The other end extending downward of the wire is fixed to a fixed part via a moving pulley, and the restraining mechanism is constituted by a restraining member that prevents the moving pulley from rising. The insertion guide part as described in.   The other end extending below the wire is fixed to a lever that is pivotally supported by a fixed portion and swings, and the restraint mechanism is configured by a restraining member that prevents the lever from swinging upward. The insertion guide part according to claim 1, wherein the insertion guide part is characterized. The restraint mechanism is
A manipulator that pulls the other end of the wire corresponding to the selected guide pin and pulls the selected guide pin downward by a predetermined amount;
An absorption mechanism that relaxes each wire in synchronization with each guide pin that rises when the cartridge is raised, and absorbs slack in each wire in synchronization with each guide pin that descends when the cartridge is lowered. The insertion guide part according to claim 1, wherein   The insertion guide unit according to claim 4, wherein the manipulator is either a cylinder or a motor that winds the other end of the wire. The absorption mechanism is
A lever that swings in synchronization with an elevating mechanism that elevates and lowers the cartridge;
A pulley attached to the lever, the pulley engaging with the wire, and moving in a direction to absorb the slack of the wire by swinging the lever when the cartridge is lowered The insertion guide part according to claim 4, wherein The restraint mechanism is
A motor having a reel that winds up the other end extending below the wire;
It is composed of a clutch that connects and separates the rotating shaft of the motor and the reel,
During the component insertion operation, the motor corresponding to the selected guide pin always stops rotating, and the clutch of the motor is always connected to restrain the wire from rising,
The motor corresponding to the guide pin required for insertion stops rotation while the cartridge is raised, and allows the wire to be unwound and raised from the reel with the clutch of the motor being separated. The clutch is in a connected state during the lowering of the cartridge, and the motor rotates in synchronization with the lowering of the cartridge to wind the wire around the reel at a predetermined speed. The insertion guide part according to claim 1. The restraint mechanism is
The motor comprises a reel that winds up the other end extending below the wire,
During the part insertion operation, the motor corresponding to the selected guide pin stops rotating at all times and restrains the wire from rising.
A motor corresponding to a guide pin necessary for insertion rotates the wire so that the wire is unwound from the reel by a predetermined amount at a predetermined speed in synchronism with the raising of the cartridge while the cartridge is raised. 2. The insertion guide unit according to claim 1, wherein the wire is reversely rotated so as to wind up the wire by a predetermined amount at a predetermined speed in synchronization with the lowering of the cartridge while the cartridge is lowered. A component supply unit for supplying radial components;
A board holding unit that carries the circuit board and holds it in a predetermined insertion position;
An insertion head for taking out radial components from the component supply unit and holding the radial components against the held circuit board;
An insertion guide portion disposed on the opposite side of the insertion head with respect to the circuit board, extending through an insertion hole provided in the circuit board through a guide pin, and guiding a lead wire of the radial component And in the radial component insertion device composed of an insertion guide portion that passes through the insertion hole,
The radial part insertion device, wherein the insertion guide part is the insertion guide part according to any one of claims 1 to 8. The lead wire of the radial component held facing the circuit board is captured by a guide pin extending through the insertion hole of the circuit board, and the guide pin is inserted together with the captured lead wire before the insertion hole is penetrated. In a radial component insertion method of inserting a radial component into a circuit board by passing the lead wire through the insertion hole by returning to a position,
When a cartridge containing a plurality of guide pins arranged corresponding to different pitches of lead wires is raised toward the circuit board for capturing the lead wires, it engages with the lower end of the guide pins that are not used. A radial component insertion method, wherein the wire is prevented from rising to avoid contact between the unused guide pin and the circuit board, and only the guide pin necessary for insertion is raised to capture the lead wire.

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