JP3207623B2 - Component supply device for electronic component insertion machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component inserter for inserting an axial lead electronic component or the like into a printed circuit board, comprising means for retracting a device for supplying an electronic component to an insertion head. The present invention relates to a component supply device in an electronic component insertion machine provided with a feed wheel for axial lead electronic components divided into two parts.

[0002]

2. Description of the Related Art In an electronic component insertion machine for cutting a taped axial lead electronic component one by one and inserting it into a printed circuit board, a component supply device for supplying an electronic component to an insertion head has conventionally been of the following type. There are things. First, a plurality of component supply devices and a single insertion head are independently provided, and electronic components are selected and taken out from the plurality of component supply devices with the single insertion head, and are placed at predetermined positions on a printed circuit board. The second type is a type in which a component supply device and an insertion head are provided in one-to-one correspondence.

The second type of electronic component insertion machine is often used for continuously inserting a single type of axial lead electronic component. In the case of this type, a component supply device for the axial lead electronic component is used. There is only one piece, and there is a problem in that it takes a long time to take out and transport parts using the insertion head because the parts are cut by the component supply device and the molded parts are picked up by the insertion head. . Therefore, taking out parts by the insertion head,
In order to shorten the time of the insertion step by omitting the conveyance, an apparatus has been proposed in which an electronic component is directly supplied below the insertion head by a component supply device.

However, in this case, if an electronic component supply mechanism made of a large-diameter ratchet or the like is used as in the conventional apparatus,
There is a problem that the supply mechanism and the insertion head interfere with each other to prevent the rotation and the like of the insertion head. In addition, when an electronic component supply mechanism made of a small-diameter ratchet or the like is used, there is a problem in that the driving force for tape feeding is reduced, and the electronic components cannot be supplied at high speed and smoothly.

[0005] From such a viewpoint, in recent years, there has been provided an electronic component insertion machine using a large-diameter electronic component supply mechanism for directly supplying an electronic component with a component supply device below an insertion head,
There has been proposed a component supply apparatus in which an insertion head is fixed and a table on which a printed circuit board is mounted is rotated to enable relative rotation between the insertion head and a print.

[0006]

However, in the above-described component supply device of the electronic component insertion machine which attempts to secure the relative rotation between the insertion head and the printed board by rotating the table, firstly, However, since the rotation direction of the table and the positioning of the printed circuit board in the two-dimensional plane must be performed in association with each other, it takes time to position the printed circuit board with respect to the insertion head, so that the time required for the insertion process cannot be reduced. Secondly, the rotation of the table requires a space approximately four times as large as the area of the printed circuit board, resulting in a problem that the electronic component insertion machine becomes large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in an electronic component insertion machine having a supply mechanism for supplying an electronic component directly below an insertion head by a component supply device, the component supply device is retracted. An electronic component that enables a reduction in the time required for the electronic component insertion work (including the case of including only the insertion process and the case where the insertion process and the knockout process are included) and the miniaturization of the configuration by adopting a configuration in which the insertion head is rotated. An object of the present invention is to provide a component supply device in an insertion machine. In addition, the electronic part sending means is provided separately, and,
It is an object of the present invention to provide a component supply device in an electronic component insertion machine capable of performing high-speed and reliable supply of electronic components by independently operating these divided feeding units.

[0008]

In order to achieve the above object, an electronic component insertion machine according to the present invention for cutting, shaping and inserting a lead wire of a taped axial lead electronic component into a printed circuit board is provided. A component supply device that is arranged near an insertion head that inserts the electronic lead into the printed circuit board and supplies the axial lead electronic component to the insertion head; When inserting, the retracting means for retracting the component supply device to a position away from the insertion head in conjunction with the lowering of the insertion head, and preferably, the retracting means, A component supply device, comprising a swing arm that swings by raising and lowering an insertion shaft that raises and lowers the insertion head; The component supply device, the first feeding means provided on the table side of the electronic component insertion machine, the second feeding means provided on the insertion head side, and the second feeding means, A feed block provided at the tip of the swing arm and swinging relative to the swing arm in conjunction with the swing of the swing arm, and engaging with a lead wire of an axial lead electronic component which is axially supported by the feed block. And a ratchet means rotatably supported by the feed block integrally with the feed wheel and rotated by a predetermined angle together with the feed wheel by swinging of the feed block.

[0009]

According to the component supply device in the electronic component insertion machine having the above-described configuration, the component supply device can be retracted by using the elevation of the insertion head for inserting the electronic component into the printed circuit board. This facilitates the operation, shortens the time required for the operation of inserting the electronic component, and realizes the downsizing of the electronic component inserter having the component supply device near the insertion head. Also, since the electronic components are sent to the insertion head by the two feed wheels, the supply of the electronic components is ensured.

[0010]

Embodiments of the present invention will be described below. First, an embodiment of the evacuation mechanism will be described. Figures 1 and 2
FIG. 2 is an upper half partial cross-sectional view and a lower half partial cross-sectional view of an electronic component insertion machine equipped with a retreat mechanism of the component supply device of the present embodiment. In FIG. 2, the insertion head is partially omitted. is there. In these drawings, reference numeral 1 denotes an insertion shaft having a hollow portion 1a, and a cutting blade and a bending arrow (not shown) are provided at the lower end thereof. Reference numeral 2 denotes a sleeve shaft provided on the outer periphery of the insertion shaft 1, which supports the insertion shaft 1 only up and down by a pin 2a engaging with a groove 1b provided in the longitudinal direction of the insertion shaft 1. An engagement block 3 is provided at the lower end of the sleeve shaft 2.
(See FIG. 2). Further, below the engagement block 3, a gripping member (not shown) for vertically lifting and lowering the cutting blade, the bending arrow, and a knockout claw described later is provided. . Reference numeral 4 denotes a knockout shaft, which is provided in the hollow portion 1a of the insertion shaft 1 so as to be able to move up and down relative to the insertion shaft 1, and has a knockout claw (not shown) at its lower end.

Reference numeral 5 denotes a cylindrical engagement block which is mounted on the outer periphery of the sleeve shaft 2 so as to be relatively movable with respect to the sleeve shaft 2. This engagement block 5 is provided with a groove 5a provided on the outer peripheral surface.
The tip of a lever 6 that swings up and down by a drive source (not shown) is engaged. Reference numeral 7 denotes a pin projecting toward the center of the cylindrical engagement block. The tip of the pin 7 penetrates a long hole 2b provided in the longitudinal direction of the sleeve shaft 2 and is fitted into the insertion shaft 1.

In FIG. 2, reference numeral 8 denotes a gear for transmitting a rotational force to the sleeve shaft 2, a longitudinal groove 2c provided in the longitudinal direction of the sleeve shaft 2 and a lower end of the longitudinal groove 2c. Are engaged with the peripheral groove 2d provided in the peripheral surface direction of the above by a pin 8a. Therefore, the rotational force from a drive source (not shown) is transmitted to the gear 8 via the intermediate gear 8b.
When the pin 8a is at the position corresponding to the circumferential groove 2d, it is not transmitted to the sleeve shaft 2, but is transmitted to the sleeve shaft 2 only when the pin 8a is at the position corresponding to the vertical groove 2c.

The insertion head of the electronic component insertion machine of the present embodiment is constituted by the above-described members, and the operation of inserting the electronic component is performed by swinging the lever 6 downward. That is, when the lever 6 swings downward, the insertion shaft 1 and the knockout shaft 4 move down together in the first stage to cut and form the electronic component lead wires, and in the second stage, the insertion shaft 1 and the sleeve The shaft 2 and the knockout shaft 4 are lowered together, and the component supply device described later is retracted. In the third stage, the insertion shaft 1, the knockout and the shaft 4 are lowered again, and the shaft is moved to the printed board. The electronic component is inserted, and in the fourth stage, only the knockout shaft 4 is lowered to push the electronic component into the printed circuit board (knockout).

In FIG. 1, a knockout mechanism is provided above the insertion shaft 1. In the knockout mechanism, when the insertion shaft 1 is lowered to the lowermost end (when the third step is completed), the protruding piece 13a of the operation lever 13 is pushed down by the operation piece 12 by the lowering of the connection shaft 11 engaged with the insertion shaft 1. Then, the piece 14 connected to the other end of the operating lever 13 is moved rightward in the figure. Thereby, the connecting shaft 1
A roller 16 at one end of a locking lever 15 which is attached to the pivot 1 and descends together with the connecting shaft 11 is disengaged from the fixed cam 19 and moves rightward with the piece 14.
On the other hand, the other end contact portion 17 of the locking lever 15 contacts a stopper 18 provided on the upper end of the knockout shaft 3 urged downward to prevent the knockout shaft 4 from lowering. Therefore, when the roller 16 moves rightward in the drawing, the locking lever 15 swings counterclockwise to release the lowering of the knockout shaft 4 and lowers the knockout shaft 4 to perform the knockout of the electronic component described above. Do.

In FIG. 2, reference numeral 20 denotes a first feeding means for electronic components, which is rotatably supported by an arm 21 fixed to a table (not shown) of the electronic component inserting machine. The arm 21 is further extended and supports the lower part of the sleeve shaft 2. The first feeding means 20 will be described later in detail. Reference numeral 22 denotes a second feed wheel for electronic components, which is rotatably supported by a feed block 33, as will be described in detail later, and which receives electronic components sent from the first feed means 20 below an insertion head (not shown). It is transported to a predetermined position. 2
Reference numeral 3 denotes a guide, which is arranged near the second feeding means (wheel) 22 in order to smoothly engage the second feeding means (wheel) 22 with the electronic component lead wires.

Next, the retracting means of the component supply device in the electronic component insertion machine according to the present embodiment will be described with reference to FIGS. Here, FIG. 3 is a partially cutaway view in which a main part of a retracting mechanism of the component supply device is enlarged, and FIG. 4 is a sectional view taken along line AA of FIG. In FIG. 2, the engagement block 3 is fixed to the lower end of the sleeve shaft 2 and moves up and down together with the sleeve shaft 2. Reference numeral 25 denotes an engagement piece that engages with the groove 3a of the engagement block 3, and a block member 26 that supports a piece 27 is mounted on an upper portion thereof. Reference numeral 28 denotes a swing block, which is swingably attached to a spindle housing 30 by a support shaft 29. The piece 27 is engaged with the groove 28a at the tip of the swing block 28. When the sleeve shaft 2 is lowered, the engaging block 3, the engaging piece 25, the block member 26 and the piece 27
Swings about the support shaft 29 as a fulcrum. Although not shown, the above-described engagement piece 25, block member 26, piece 27,
The swing block 28 and the support shaft 29 are provided on both sides of the engagement block 3 and the spindle housing 30.

Reference numeral 31 denotes a swing arm, which has a bifurcated shape as shown in FIG.
8, respectively, and swing together with the swing block 28 around the support shaft 29 as a fulcrum. 32 is a swing arm 31
With the support member fixed to the lower end of the feed block 33 and the second feed wheel 22, and the ratchet wheel 34 provided integrally with the second wheel 22,
The support shaft 35 supports the swing and the rotation, respectively.

In FIG. 3, reference numeral 36 denotes a feed pawl, which is swingably attached to the feed block 33, and is constantly urged to the ratchet wheel 34 by an urging spring 36a.
Reference numeral 37 denotes a positioning claw that is swingably attached to the support member 32, and is urged by a ratchet wheel by an urging spring 37a. Reference numerals 38 and 39 denote stoppers fixed to the spindle housing 30.
Reference numeral 8 contacts the projecting piece 33 a of the feed block 33, and the stopper 39 contacts the step 33 b of the feed block 33.

The evacuation mechanism of this embodiment having the above-described structure operates as follows. When an insertion head (not shown) is positioned at a predetermined position on the printed circuit board by a drive device (not shown) of the electronic component insertion machine, the lever 6 swings downward and the insertion shaft 1, the sleeve shaft 2 and the knockout shaft 4 are lowered. Then, the above-described first to fourth steps are performed.
Of these, the second stage process after the cutting and shaping of the electronic component lead wires (first stage) corresponds to the process of retracting the component supply device. That is, when the sleeve shaft 2 is lowered together with the insertion shaft 1, the engagement glock 3 shown in FIG.
And the engaging piece 25 engaged with the groove 3a descends to lower the block member 26. When the block member 26 descends, the swing block 28 that engages with the block 27 of the block member 26 and the swing arm 31 provided integrally with the swing block 28 are rotated counterclockwise around the support shaft 29. Rocks.

[0020] In this manner, when the swing arm swings by an angle alpha _1, as shown in FIG. 3, but the protruding pieces 33a of the feed block 33 contacts the stopper 38, the engagement block 3 is further lowered further swings only counterclockwise angle alpha ₂ also swing arm 31 Te. Therefore, the feed block 33 swings counterclockwise relative to the swing arm 31 about the support shaft 35. At this time, the ratchet wheel 34 also tries to rotate counterclockwise about the support shaft 35. However, since the positioning claw 37 meshes with the teeth of the ratchet wheel 34 by the spring force of the urging spring 37a, the ratchet wheel 34 Does not rotate. As a result, the feed block 33 swings counterclockwise relative to the ratchet wheel 34, and the feed claw 36 provided on the feed block 33 rides over one tooth of the ratchet wheel 34. (See the two-dot chain line in FIG. 3).

When the swing arm 31 swings counterclockwise by α ₁ + α _{2 in} this manner, the first feed wheel 22 and the ratchet wheel attached to the support member 32 fixed to the lower end of the swing arm 31 The component supply device 34 and the like retreats to a position away from the insertion head. Here, when it is necessary to change the direction of the insertion head, the gear 8 is rotated by a driving device (not shown). At this time, since the sub-rib shaft 2 is lowered, the pin 8 a of the gear 8 is engaged only with the longitudinal groove 2 c of the sleeve shaft 2 to transmit the rotation to the sleeve shaft 2. As a result, the sleeve shaft 2 and the insertion shaft 1 are simultaneously rotated, and the insertion head attached to the lower end is rotated to position the electronic component and the through hole on the printed circuit board.

In this state, the above-described third and fourth steps of work are performed, and the work of inserting and knocking out the electronic component into the printed circuit board is completed. When this series of operations is completed, the lever 6 swings upward to raise the insertion shaft 1. As the insertion shaft 1 is raised, the sleeve shaft 2 is also raised, and the engagement block 3 is raised. Thus, the swing arm 31 swings clockwise about the support shaft 29.
Then, the stepped portion 33b of the feed block 33 when the swing angle of alpha ₂ because contact with the stopper 39, the swing arm 31 in a state where the swing of the feed block 33 is stopped further swings in the clockwise direction. Due to the swing of the swing arm 31, the ratchet wheel 34 tries to revolve clockwise around the support shaft 29, but the feed pawl 36 meshes with the teeth of the ratchet wheel 34 by the spring force of the biasing spring 36a. As a result, the revolving motion is blocked, and the shaft rotates (rotates) clockwise about the support shaft 35 by that amount. With the rotation of the ratchet wheel 34, the first feed wheel 2
2 rotates clockwise by one pitch, and sends the electronic component lead (W in FIG. 3) engaged with the wheel 2, that is, the axial electronic component, below the insertion head. At this time, the positioning claw 37 also meshes with the teeth of the ratchet wheel 34, but the clockwise rotation of the ratchet wheel 34 pushes up along the inclined surface of the teeth against the spring force of the biasing spring 37a. It moves to the next tooth and meshes.

As described above, according to the evacuation mechanism of the component supply device in the electronic component insertion machine described above, when the electronic component is fed, it is located near the insertion head, and the insertion head performs the operation of inserting the electronic component. Sometimes, it is retracted to a position away from the insertion head to prevent interference with the insertion head.

The retracting mechanism of the present invention is not limited to the above embodiment, but can be modified within the scope of the gist. For example, the following other embodiments can be mentioned. A configuration in which cutting and shaping of lead wires of an electronic component are provided, for example, in a retracting means other than the insertion head. The component supply device is provided only on the insertion head side. A device that uses something other than a wheel, such as a chain, to send electronic components. A structure in which the swing arm is swung by an independent drive source other than elevating and lowering the insertion shaft, for example.

Next, the means for feeding electronic components will be described. The feed means is provided in an electronic component insertion machine for cutting and forming a lead wire of a taped axial lead electronic component and inserting the same into a printed circuit board, the second component having a large-diameter wheel provided on a main body side of the electronic component insertion machine. An axial lead electronic component comprising: a first feed means; and a second feed means provided with a small-diameter wheel provided in proximity to an insertion head for cutting and shaping the lead wire of the axial lead electronic component and inserting the lead wire into a printed circuit board. Is held with a predetermined slack between the first and second feeding means, and the first and second feeding means operate independently of each other.

Next, the first feeding means will be described in detail with reference to FIG. 2 and FIGS. The first feeding means 20 is attached to an arm 21 (not shown) of the electronic component insertion machine. That is, a rotating shaft 201 is supported on the arm 21, and a large-diameter feed wheel 202 is fixed to the rotating shaft 201 at substantially the same interval as the inter-tape width of the axial lead electronic component. A ratchet wheel 203 for rotating the feed wheel 202 only in the component feed direction and preventing reverse rotation is fixed substantially at the center of the rotating shaft 201. The ratchet wheel 203 is attached to the ratchet wheel 203 by a spring 205.
The pawl 204 biased to the side is engaged. This claw wheel 20
3 is detachable from the claw 204 by the cylinder 206. It should be noted that intermittent rotation independent of the second feeding means is transmitted to the rotating shaft 201 by a stepping motor (not shown) or the like.

A guide cover 207 is provided on substantially a quarter of the feed wheel 202 so that the electronic component does not come off the wheel 202 when the axial lead electronic component is fed. Further, the electronic component detection switch 208 is arranged near the moving path of the electronic component to check the supply state of the electronic component. The axial electronic component sent from the first sending means 20 is sent to the second sending means 22, but the first and second sending means 20,
The axial lead electronic component between 22 is in a state having a predetermined slack. Thereby, the axial lead electronic component is supplied to the insertion head smoothly and at high speed by the first feeding means.
The molded electronic component is securely mounted on the printed circuit board by the second feeding means. Therefore, high-speed and reliable supply of the axial lead electronic component can be achieved.

[0028]

According to the component supply device in the electronic component insertion machine having the above-described configuration, in the electronic component insertion machine in which the component supply device is disposed near the insertion head, when the electronic component insertion work or the like is performed. Since the component supply device can be easily retracted, the time required for the operation of inserting the electronic component can be reduced, and the structure can be simplified and the electronic component inserter can be downsized. Further, since the feeding means is divided into two, the supply of electronic components can be performed at high speed and reliably.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of the upper half of an electronic component insertion machine equipped with a component supply device retreat mechanism of the present embodiment.

FIG. 2 is a partial cross-sectional view of a lower half of an electronic component insertion machine equipped with a component supply device retreat mechanism of the present embodiment in which an insertion head part is partially omitted.

FIG. 3 is an enlarged partial cutaway view of a main part of the component supply device retracting mechanism of the present embodiment.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 shows a front view of the first feeding means.

FIG. 6 shows a plan view of the first feeding means.

FIG. 7 is an explanatory diagram of a wheel reverse rotation prevention unit in the first feeding means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Sleeve shaft 3 ... Engagement block 5 ... Engagement block 20 ... First feed wheel 21 ... Arm 22 ... Second feed wheel 23 ... Guide 25 ... Engagement piece 26 ... Block member 27 ... Piece 28 ... Swing block 29 ... Support shaft 30 ... Spindle housing 31 ... Swing arm 32 ... Support member 33 ... Feed block 33a ... Protruding piece 33b ... Stepped portion 34 ... Ratchet wheel 35 ... Support shaft 36 ... Feeding claw 37 ... Positioning claw 38 ... Stopper 39 ... Stopper

Continuation of the front page (56) References JP-A-3-23697 (JP, A) JP-A-3-218100 (JP, A) JP-A-63-282039 (JP, A) JP-A-54-19169 (JP) , A) Japanese Utility Model Showa 62-94699 (JP, U) Japanese Utility Model Showa 58-180665 (JP, U) Japanese Utility Model Showa 1-1116499 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB) Name) H05K 13/02 H05K 13/04

Claims (5)

(57) [Claims] A component supply device disposed near an insertion head for inserting an axial lead electronic component into a printed circuit board and supplying the axial lead electronic component to the insertion head; And a retracting means for retracting the component supply device to a position distant from the insertion head in conjunction with the lowering of the insertion head when the device is inserted into a printed circuit board. 2. The electronic component insertion machine according to claim 1 , wherein said retracting means comprises a swing arm which swings by raising and lowering an insertion shaft for raising and lowering said insertion head. Parts supply equipment. Wherein the insertion head, cut the lead wire of the axial lead electronic components, a configuration for insert molded to the printed circuit board, the component supplying device is provided to the main body of the electronic parts insertion machines A first feeding means having a large-diameter wheel, and a second feeding means having a small-diameter wheel provided in the vicinity of the insertion head, wherein a tape holding the axial lead electronic component is a first tape. 3. An electronic component insertion machine according to claim 1 , wherein said first and second feeding means are independently operated to feed each other with a predetermined slack between said first feeding means and said second feeding means. Parts supply equipment. 4. A component supply device for an electronic component insertion machine according to claim 1 , wherein said insertion head is configured to cut, form, insert and knock out a lead wire of an axial lead electronic component. 5. The component supply device comprises a first feeding means and a second feeding means provided on an insertion head side, wherein the first feeding means is provided on a main body side of the component feeding apparatus. a structure in which a feed wheel of a large diameter, said second feeding means, in conjunction with the swing of the swing arm is provided at the distal end of the swing arm, feeding the relatively swinging the swing arm A block, a feed wheel that is pivotally supported by the feed block and engages with a lead wire of an axial lead electronic component, and is integrally supported with the feed block by the feed block. 5. A component supply device in an electronic component insertion machine according to claim 2, wherein said component supply device comprises a ratchet means rotating with a predetermined angle.