KR20020014646A - Feeding apparatus for chip component - Google Patents

Abstract

PURPOSE: To provide a device supplying for chip components which can prevent breakage of chip components by relieving the force stronger than needed, when the components are engaged into a rotating member without requiring any special drive source for driving the rotating member. CONSTITUTION: The chip supplying device discharges chips P stored in a component housing chamber 34 in a line by lowering a feed lever 13 according to the load input to a chip mounter A, and intermittently driving a rotary drum 33 in one direction via conversion mechanisms 40, 41, and 39. When a rotational resistance higher than a prescribed value acts on the drum 33, the breakage of the chip components P is prevented by relieving the force stronger than needed by means of the torque limiting functions of the conversion mechanism 40, 41, and 39.

Description

Feeding apparatus for chip component

The present invention relates to a device for supplying chip components, and more particularly, to an apparatus for aligning and supplying chip components in a line using load input from a chip mounter.

Conventionally, a component storage chamber for storing chip components formed between a fixed drum and a rotating drum, a chute groove formed on the inner circumference of the component storage chamber, and formed at a lower end of the chute groove, and sliding in a predetermined posture along the chute groove. A gate port for passing each chip component one by one, a discharge passage for aligning and discharging the chip components in a row, and a chip component having an abnormal posture formed at an inner surface of the rotating drum and stopped at the gate port. A device for supplying a chip component including a claw which pushes in the opposite direction to release the blockage of the chip component has been proposed (Japanese Patent Laid-Open No. 11-71019). The rotating drum is continuously rotated in one direction by the electric motor.

Chip components that are lined up and discharged in the discharge passage are conveyed to the discharge outlet by a transfer means disposed at the end of the discharge passage. Here, the chip components are sucked and discharged one by one by the chip mounter and mounted on a printed board or the like. Therefore, by rotating the rotating drum using the driving force of the chip mounter, a driving source for rotating the rotating drum becomes unnecessary. The structure can be simplified, and the rotating drum can be rotated and the suction of the chip components can be discharged simultaneously.

Recently, a high supply capacity is required for the component supply apparatus. It is also gradually realized that the supply time of chip components per chip is 0.1 seconds or less. When a chip component is supplied in such a short time, it is necessary to rotate a rotating drum at high speed. If the chip component is caught between the protrusion of the rotating drum and the gate port, the chip component may be damaged.

Therefore, an object of the present invention does not require a special driving source for driving a rotating member, and chip components capable of preventing breakage of the chip component by releasing excessive force applied when the chip component is caught in the rotating member. To provide a supply of.

1 is an overall perspective view of a supply apparatus according to a first embodiment of the present invention.

FIG. 2 shows the internal structure of the supply device of FIG. 1.

3 is a cross-sectional view taken along the line III-III of FIG. 1.

4 is a cross-sectional view taken along the line IV-IV of FIG. 1.

5 illustrates the operation of the drive mechanism shown in FIG. 1.

FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 2.

7A and 7B are perspective views of chip components.

8 is a front view of a supply apparatus according to a second embodiment of the present invention.

FIG. 9 is a front view of the supply apparatus of FIG. 8 at the time of descending. FIG.

10 is a front view of a supply apparatus according to a third embodiment of the present invention.

FIG. 11 is a cross-sectional view taken along line VII-VII of FIG. 10.

12 is a front view of the supply device of FIG. 10 when lowered.

FIG. 13 is a front view when the supply device of FIG. 10 is raised.

It is a front view of the supply apparatus which concerns on 4th embodiment of this invention.

15 is a cross-sectional view taken along the line XV-XV of FIG. 14.

FIG. 16 is a front view when the supply device in FIG. 14 is lowered. FIG.

FIG. 17 is a front view when the supply device in FIG. 14 is raised. FIG.

It is a front view of the supply apparatus which concerns on 5th Embodiment of this invention.

19 is a front view of a supply apparatus according to a sixth embodiment of the present invention.

20 is a cross-sectional view taken along line VII-VII of FIG. 19.

21 is a front view of the supply apparatus of FIG. 19 at the time of descending.

FIG. 22 is a front view when the supply device in FIG. 19 is raised. FIG.

It is a front view of the supply apparatus which concerns on 7th Embodiment of this invention.

<Brief description of the main parts of the drawing>

A Mounter lever B Suction nozzle

5 Blade (feed member) 13 Feed lever

33 Rotary Drums 34 Parts Storage Room

35 chute 36 gate port

37 Exit passage 38 Protrusion

39 driven pulleys 40 driven pulleys

41 belt

In order to achieve the above object, according to the present invention, a component storage chamber for storing a plurality of chip components, an alignment passage for aligning and discharging the chip components in a line in the component storage chamber, rotation to solve the blockage of the chip components in the alignment passage A device for supplying a chip component comprising a member, the feed lever linearly reciprocating or oscillating in response to a load input from a chip mounter, and converting an operation of the feed lever into a rotational motion of the rotating member, When the rotational resistance of the rotating member is higher than a predetermined value, the present invention provides a chip component supplying apparatus including a converter mechanism having a torque limit function that deviates from the rotational force of the rotating member.

In this feeder, the feed lever is linearly reciprocated or swinged by the load input of the chip mounter. This movement is converted into the rotational movement of the rotating member via the conversion mechanism. The rotating member releases the blockage of the chip component in the alignment passage. At this time, the chip component is caught between the rotating member and the component storage chamber, whereby a large resistance to rotation is generated. In this case, the torque limit function of the converting mechanism prevents excessive load from acting on the chip component by deviating from the rotational force of the rotating member. Therefore, breakage of chip components can be prevented.

The alignment passage is formed on the inner circumference of the component storage chamber, and has a chute groove for aligning chip components in a predetermined direction and sliding downward, and a chip component formed at a lower end of the chute groove and sliding in a predetermined posture along the chute groove. It is preferable to comprise a gate port for passing one by one, and a discharge passage for aligning and discharging the chip components passing through the gate in a row.

In this case, the direction of the chip component is arranged in the chute groove, and the chip component passes through the gate port and the attitude is trimmed. Thus, with two stages of alignment, the chip components are always aligned in a constant direction and in a certain posture.

The rotating member is formed on the inner wall of the rotating drum constituting one wall of the component storage chamber, rotates along the inner circumference of the component storage chamber, and moves the chip component having an abnormal posture stopped at the gate port in a direction opposite to the discharge direction. It is preferable to set it as the projection part which pushes in and removes blockage.

In this case, part of the component storage chamber functions as a rotating member. Therefore, the number of parts can be reduced and the structure can be simplified.

Other types are considered as the conversion mechanism. For example, a shaft supporting the conversion mechanism to swing the feed lever, a driving pulley attached to the shaft, a driven pulley attached to the rotating member, between the shaft of the feed lever and the driving pulley or between the rotating member and the driven pulley. In the case of a one-way clutch formed in the belt, and a belt formed between the drive pulley and the driven pulley, the belt is slid when the torque higher than a predetermined value is applied to the drive pulley or the driven pulley. desirable. Therefore, the torque limit function can be exhibited.

In addition, the conversion mechanism preferably includes a power transmission means formed between the feed lever and the rotating member, using a eddycurrent damper, and a one-way clutch for rotating the rotating member in only one direction. In this case, the eddy current damper generates a torque limit function. The eddy current damper is composed of a nonmagnetic conductor formed in one member, a yoke formed in the other member and constituting a magnetic path, and a magnet attached to the yoke so that the magnetic flux acts in a direction orthogonal to the nonmagnetic conductor. When relative movement occurs between the conductor and the yoke, eddy currents induced in the conductor occur in a direction that prevents the magnetic flux from changing. Eddy currents create a resistance between the yoke and the conductor. This resistive force allows the rotating member to be rotated after the feed lever. When the chip component is sandwiched between the rotary member and the peripheral member when the chip component is aligned, the breakage of the chip component can be prevented by deviating from the excessive force applied to the rotating member by the eddy current damper. Since the eddy current damper has no sliding portion, the torque limit function cannot be changed due to wear or the like. The torque limit function can be kept stable for a long time.

The conversion mechanism is connected to the feed lever, and is formed between the swinging member formed coaxially with the rotating member, the swinging member and the rotating member, the power transmission means using the eddy current damper, and the one-way clutch for rotating the rotating member only in one direction. It may include. When the power transmission means using the eddy current is formed between the feed lever and the rotating member, as described above, the loss of the driving force is large because the former moves linearly and the latter rotates. On the other hand, if the eddy current damper is formed between the oscillating member and the rotating member rotating coaxially, it is possible to reduce the loss of the driving source caused by the eddy current damper even when the feed lever is linearly moved.

The conversion mechanism is connected to the feed lever, the first rocking member oscillating by the action of the feed lever, the second rocking member coaxially formed with the first rocking member, and rocking in accordance with the motion of the first rocking member, the first rocking. It is preferred to include a power transmission means formed between the member and the second swinging member, the power transmission means using the eddy current damper, and the one-way clutch to rotate the rotating member in one direction. Also in this case, even when the feed lever moves linearly, since the first swinging member and the second swinging member vibrate coaxially, the eddy current damper effect can be effectively achieved. In addition, since the first and second swinging members and the eddy current damper mechanism can be formed at positions different from the feed lever or the rotating member, the flexibility of the layout can be enhanced and the height of the feeding device can be reduced. When the swinging member and the rotating member are rotated coaxially, the swinging member increases in size as described above, and the operation of the feed lever is slowed down due to the inertia. On the other hand, in the conversion mechanism, the first and second swinging members can be made compact and can be reduced by the influence of inertia.

1 to 6 show a first embodiment of a device for supplying chip components according to the present invention. In this embodiment, an angled chip electronic component having electrodes at both ends is used as the chip component P (see Fig. 7A).

The concave end 2a is formed in the front surface of the vertical wall part 2 of the conveyance apparatus main body 1 as shown in FIG. The narrow space is formed by fixing the front cover 4 on the front of the vertical wall portion 2. The blade 5 which is an example of a conveying member is arrange | positioned in this space so that a sliding to a horizontal direction is possible. The upper cover 3 is fixed to the upper surface of the vertical wall portion 2 to prevent the component P from popping out during transportation. Guide grooves 6 for aligning and guiding the parts P are arranged on the inner surface of the concave end 2a, the inner surface of the front cover 4, the upper surface of the blade 5, and the upper cover 3. Is formed on the lower surface.

The blade 5 is formed of a thin metal sheet, and has a long hole 5a and a spring receiving hole 5b extending in the horizontal direction. The pin 7 formed in the vertical wall portion 2 is inserted into the long hole 5a to guide the blade 5 in the horizontal direction. The spring 8 is accommodated in the spring receiving hole 5b. The radially opposite side portions of the spring 8 are accommodated in the grooves 2b formed in the vertical wall portion 2 and the opening holes 4a formed in the front cover 4 (see FIG. 3). The rear face of the spring 8 is supported by the spring receiving hole 5b, and the front face is supported by the groove 2b and the opening hole 4a. The spring 8 always presses the blade 5 backwards.

The rear end 5c of the blade 5 is in contact with the main surface of the carrying cam (ratchet gear 9) attached to the main body 1 so as to rotate freely on the rotation shaft 10. The spring 8 and the cam 9 are constituted by drive means for reciprocating the blade 5. The cam 9 has a peak 9a and a curved portion 9b as shown in FIG. 2, and is intermittently rotated in the direction of the arrow by a ratchet mechanism described later. Therefore, the blade 5 advances at a low speed while the rear end 5c of the blade 5 rises along the peak 9a, and the blade 5 at high speed when the rear end 5c falls to the curved portion 9b. Retreat The forward speed of the blade 5 is set to a speed at which a predetermined bearing friction force acts between the blade 5 and the component P disposed on the upper surface of the blade 5. The retraction of the blade 5 is set at a speed at which the frictional force becomes ineffective between the blade 5 and the component P disposed on the upper surface of the blade 5. The leading part P1 of the part P conveyed forward by the blade 5 is exposed from the upper surface cover 3, and is adsorbed and discharged by the suction nozzle B of the chip mounter.

A ratchet mechanism for intermittently rotating the cam (ratchet gear 9) is formed in the vertical wall portion 2 of the main body 1. As shown in FIG. 4, the ratchet mechanism includes a link 11 and an oscillating shaft whose upper end is pivotably supported by a pivot point 12 parallel to the rotation shaft 10 of the ratchet gear 9. A feed lever 13 formed to be swingable with the support point 12 and first and second attachment plates 14 and 15 rotatably formed coaxially with the ratchet gear 9. The first and second ratchet protrusions 16 and 17 are rotatable around the connecting shafts 18 and 19, and are engaged with the moving direction of the ratchet gear 9 (the direction turning to the right in FIG. 2). It is attached to the second attachment plates 14, 15. The first ratchet protrusion 16 is engaged with the ratchet gear 9 at a position close to the swing shaft 12, while the second ratchet protrusion 17 is at a position far from the swing shaft 12 with the ratchet gear 9. Interlocked. Long holes 11a and 11b extending in the longitudinal direction are formed at the middle and lower ends of the link 11, respectively. The connecting shaft 18 of the first ratchet protrusion 16 is engaged with the elongated hole 11a formed in the middle portion of the link 11, while the pin 20 formed in the second attachment plate 15 is connected to the link ( It is engaged with the long hole 11b formed in the lower end part of 11). Accordingly, the link 11 swings and the ratchet protrusions 16 and 17 reciprocate in the front-rear direction (right and left directions in FIG. 2).

The operation force directed downward from the mounter lever A of the chip mounter is intermittently applied to the free end 13a of the feed lever 13 at a predetermined timing. A first spring 21 composed of a tension spring is formed between the feed lever 13 and the link 11. The first stopper 23 is formed in the feed lever 13 to be in contact with the rear end of the link 11. Since the stopper 23 is in contact with the rear end of the link 11, the rotation angle between the feed lever 13 and the link 11 is regulated, and the first spring 21 is in a state where a predetermined tension is applied. Is maintained. The feed lever 13 is moved in the direction opposite to the operating force by the second spring 22. The initial position of the feed lever 13 is defined by the third stopper 25. The main body 1 is formed with a second stopper 24 for regulating the swing of the link 11 in the forward direction (direction to the left in FIG. 2). The stop position of the second stopper 24 can be adjusted.

Next, the operation of the ratchet mechanism will be described with reference to FIGS. 5A, 5B, 5C, and 5D.

In the initial state, as shown in FIG. 5A, the feed lever 13 is lifted upward by the spring 22 and is in contact with the stopper 25. The link 11 swings in the direction turning to the right by the stopper 23. In addition, the two ratchet protrusions 16 and 17 are engaged with the ratchet gear 9 at positions 180 symmetrical of the ratchet gear 9, respectively.

Next, the free end 13a of the feed lever 13 is pushed down by the mounter lever A, and the feed lever 13 starts to swing in the direction turning to the left as shown in FIG. 5B. At the same time, the link 11 also swings (moves forward) in the direction of turning to the left by the action of the spring 21 and the stopper 23. The connecting shafts 18 and 20 engaged with the long holes 11a and 11b move in the right turning direction. Thus, the plate 14 rotates in the right turning direction, while the plate 15 rotates in the left turning direction. Therefore, the upper first ratchet protrusion 16 formed on the plate 14 meshes with the ratchet gear 9 and rotates the ratchet gear 9 in a direction turning to the right. At the same time, the lower second ratchet protrusion 17 formed on the plate 15 slides the main surface of the ratchet gear 9 in the direction of turning to the left, and allows the ratchet gear 9 to rotate.

In FIG. 5C, the feed lever 13 is pushed down to the lower limit position. In this state, the distal end of the link 11 is stopped in contact with the stopper 24, and the ratchet gear 9 stops rotating. The lower ratchet protrusion 17 is engaged with the next curved portion 9b of the ratchet gear 9. Even if the swing angle of the feed lever 13 is larger than the swing angle of the link 11, since the spring 21 is formed between the feed lever 13 and the link 11, the link 11 is connected to the stopper 24. After stopping by contact, only the feed lever 13 swings. Thus, the stop position of the link 11 can be accurately defined.

Next, when the pushing force of the mounter lever A is released, the feed lever 13 swings to the right direction by the spring 22, as shown in FIG. 5D. By the contact of the stopper 23 and the rear end of the link 11, the link 11 also swings in the direction of turning to the right after the feed lever 13 (retraction movement). At this time, the lower ratchet protrusion 17 is engaged with the ratchet gear 9 to rotate the ratchet gear 9 in the direction of turning to the right, while the upper ratchet protrusion 16 rotates the main surface of the ratchet gear 9 to the left. And the ratchet gear 9 is allowed to rotate. When the feed lever 13 comes into contact with the stopper 25 and stops, the link 11 also stops swinging. That is, as shown in FIG. 5A, the two ratchet protrusions 16, 17 are engaged with the ratchet gear 9 in a 180 degree symmetrical position of the ratchet gear 9.

In this embodiment, when the feed lever 13 descends and ascends, that is, when the link 11 swings in the left turning direction (forward movement) and in the right turning direction (retraction movement) When the ratchet gear 9 is rotated, the ratchet gear 9 can rotate at a high speed. In addition, at least one of the ratchet protrusions 16, 17 is always engaged with the ratchet gear 9. Therefore, even if the protrusion is not formed separately, the ratchet gear 9 can be reliably prevented from rotating in reverse.

An angle θ ₁ at which the first ratchet protrusion 16 rotates the ratchet gear 9 at a position close to the swing shaft 12 is a ratchet gear 9 at a position where the second ratchet protrusion 17 at a position far from the swing shaft 12 is rotated. ) Is smaller than the angle θ ₂ to rotate. That is, the rotation angle of the ratchet gear (cam: 9) when the blade 5 falls to the curved portion 9b of the cam 9 is small, and when the blade 5 rises to the peak 9a of the cam 9, Rotation angle of the ratchet gear (cam: 9) is large. Therefore, the rear end 5c of the blade 5 can ascend to the peak 9a of the cam 9 continuously without the peak 9a temporarily stopping. Therefore, the advancing of the blade 5 can be continued continuously, and the conveyance capability of the component P by the blade 5 can be strengthened.

On the rear upper surface of the vertical wall portion 2, there is formed an alignment supply device 30 for aligning the parts P in a row and supplying them on the blade 5.

That is, the fixing drum 31 having the circular recessed portion 32 is fixed integrally to the rear upper portion of the vertical wall portion 2 of the main body 1. The rotary drum 33 is fitted to rotate freely in the circular recess 32 of the fixed drum 31. The cylindrical component storage chamber 34 is formed between both. The semicircular-shaped chute groove 35 for aligning the component P in the longitudinal direction and sliding downward is formed on the inner circumferential surface of the recess 32 of the fixed drum 31. The width of the chute groove 35 is larger than the height or width D of the chip component P and smaller than the length L. FIG. The chip component P may have a rectangular parallelepiped shape as shown in FIG. 7A, or may have a cylindrical shape as shown in FIG. 7B. At the lower end of the chute groove 35, the gate port 36 is formed to pass through the parts P sliding along the chute groove 35 in a predetermined posture (a vertical direction and a side lying posture) one by one. In addition, the discharge passage 37 is formed to align the parts P passing through the gate port 36 in a line and guide the blade 5 upward. The width and height of the gate port 36 are set to the same size as the width of the chute 35, respectively. Accordingly, the component P sliding in the standing state is blocked at the gate port 36. On the inner surface of the rotating drum 33, a projection 38 for pressing the component P having an abnormal posture stopped at the gate port 36 in a direction opposite to the discharge direction (the direction turning to the left in FIG. 2) to release the blockage. (See FIG. 6) is formed. Thus, even if the component P is blocked at the gate port 36, the protrusion 38 of the rotary drum 33 removes the component P blocked at the gate port 36 or lays the component P sideways. Thus, blockage can be solved.

Between the said feed lever 13 and the rotating drum 33, the conversion mechanism which converts the rocking motion of the feed lever 13 into the intermittent rotational motion of the rotating drum 33 to the left is formed. That is, the driven pulley 39 (refer FIG. 1) is integrally formed in the outer surface of the rotating drum 33. As shown in FIG. The driven pulley 39 is linked to the drive pulley 40 via the belt 41. When the chip component P is pinched between the rotary drum 33 and the peripheral member by the rotation of the rotary drum 33, the belt 41 slides on the pulleys 39 and 40 to perform a torque limit function. Therefore, breakage of the chip component P can be prevented. As shown in FIG. 4, the drive pulley 40 is rotatably inserted on the swing shaft 12 of the link 11. The feed lever 13 is attached to the outer circumference of the boss of the drive pulley 40 via the first one-way clutch 42. In addition, the swing shaft 12 is interlocked with the inner circumference of the drive pulley 40 via the second one-way clutch 43. In this embodiment, the swing shaft 12 is a fixed shaft.

When the free end 13a of the feed lever 13 is pushed downward and oscillated in the direction turning to the left in FIG. 2, the drive pulley 40 is connected to the feed lever 13 by the first one-way clutch 42. It is integrally rotated in the turning direction to the left of FIG. On the other hand, when the feed lever 13 swings in the direction turning to the right in FIG. 2 by the spring 22, the drive pulley 40 maintains the stopped state because the first one-way clutch 42 idles. I will try to. However, since the first one-way clutch 42 has sliding friction, the drive pulley 40 tries to rotate in a direction turning right after the feed lever 13. At this time, the second one-way clutch 43 in which the inner ring is fixed to the swing shaft 12 prevents the drive pulley 40 from rotating in the right turning direction. As a result, the drive pulley 40 can reliably maintain the stopped state. That is, the drive pulley 40 rotates intermittently only in the direction turning to the left.

In FIG. 1, in order to supply the component P to the component storage chamber 34, the component input chamber 50 is formed above the rear part of the fixed drum 31. As shown in FIG. On the upper side of the component input chamber 50, the bulk case 51 is formed to be detachable in an inverted state. The component input chamber 50 and the component storage chamber 34 are connected through a connection passage (not shown). The component P slides from the component input chamber 50 to the component storage chamber 34 using gravity.

In FIG. 2, the discharge passage 37 consists of one straight passage extending from the gate port 36 to the blade 5. 1, the discharge passage 37 is connected to two straight lines having different inclination angles. The support member 52 which reciprocates in the horizontal direction is formed at the bottom of the lower passage having a small inclination angle. In this case, since the inclination angle of the lower passage is small, the component moves smoothly onto the blade 5. However, the smoothness of the parts is reduced. Therefore, the support member 52 moves in the vertical direction, thereby preventing the residence of the part. The detailed configuration is proposed in Japanese Patent Application No. 10-189549 filed previously by the applicant of the present invention.

In addition, in FIG. 2, in order to simplify description, the rear end part 5c of the blade 5 is made to contact the main surface of the cam 9 directly. In FIG. 1, a cam follower 53 in contact with the cam 9 is formed separately. The cam follower 53 is linked to the rear end of the blade 5. A spring 54 for moving the cam follower 53 in the cam direction is used in place of the spring 8 for moving the blade 5 backward. This structure is the same as that of Japanese Patent Application No. 10-185571.

The conveyance member which conveys the chip component P discharged | emitted from the discharge | emission path 37 to the discharge | emission outlet of the adsorption nozzle B is not limited to the blade 5. You may use a conveyance belt. The conveyance belt is intermittently rotated via a ratchet mechanism or the like by a force pushing downward of the mounter lever A of the chip mounter.

8 and 9 show a supply apparatus according to a second embodiment of the present invention.

In the first embodiment, for example, the feed lever 13, which receives the operating force from the mounter lever A, swings about the support shaft 12. In this embodiment, the first feed lever 60 is movable vertically and the second feed lever 64 is movable.

The first feed lever 60 is supported to be movable in the vertical direction by a pair of upper and lower links 61 and 62, and is always moved upward by the spring 63. An elongated hole 60a extending horizontally is formed in the lower portion of the first feed lever 60. The pin 64a fixed to the distal end of the second feed lever 64 is slidably engaged in the long hole 60a. The shaft 65 is fixed to the proximal end of the second feed lever 64. The second feed lever 64 can be rocked in the shaft 65. The drive pulley 67 is attached to the shaft 65 via the one-way clutch 66. The one-way clutch 66 is locked when the shaft 65 rotates to the left, and idles when the shaft 65 rotates to the right. The belt 41 is formed by winding between the drive pulley 67 and the driven pulley 39 formed on the side of the rotary drum 33. In addition, the one-way clutch 68 is formed in the rotary drum 33. The rotary drum 33 is attached to the fixed shaft 69 via the one-way clutch 68. The same alignment supply device 30 as in the first embodiment is formed inside the rotary drum 33.

In this embodiment, by pushing down the 1st feed lever 60 by the mounter lever A, as shown in FIG. 9, the 2nd feed lever 64 oscillates to the left turning direction, and the one-way clutch is carried out. (66) is locked and the drive pulley 67 is rotated in the direction of turning to the left. Therefore, the driven pulley 69 is rotated via the belt 41 following the drive pulley 67, and rotates the rotating drum 33 to the left direction.

When the pushing force to the lower side of the mounter lever A is released, the first feed lever 60 returns upward by the spring 63, and the second feed lever 64 swings in the right turning direction. However, since the one-way clutch 66 idles in the direction turning to the right, the drive pulley 67 attempts to remain stationary. Since the one-way clutch 66 has sliding friction, the drive pulley 67 attempts to rotate slightly in the right turning direction. At this time, the one-way clutch 68 incorporated in the rotary drum 33 prevents the drive pulley 67 from rotating in the right turning direction. Therefore, the drive pulley 67 can reliably maintain the stopped state. Therefore, the rotary drum 33 intermittently rotates to the left by the vertical movement of the first feed lever 60.

In this embodiment the belt 41 has a torque limit function. Even when the chip component P is pinched between the rotary drum 33 and the gate port 36, the belt 41 slides on the pulley 39 or 67 to release the force. Therefore, breakage of the chip component P can be prevented.

10 to 13 show a supply apparatus according to a third embodiment of the present invention.

This supply apparatus includes a feed lever 70 and a spring 71 for moving the feed lever 70 back upward. The feed lever 70 is supported so as to be able to move in the vertical direction with respect to the apparatus main body 72 (see FIG. 1) via the link 73 and the bell crank 74. The mounter lever A of the chip mounter is fed It is disposed above the lever 70. The mounter lever A is vertically moved within a predetermined stroke range with the operation of the chip mounter. Therefore, the feed lever 70 is pushed downward by the mounter lever A. FIG.

An eddy current damper (power transmission means 75) is formed between the feed lever 70 and the rotary drum 79. The eddy current damper 75 is a circular shape which can move through a gap between the U-shaped yoke 76 integrally formed in the feed lever 70, the magnet 77 attached to the yoke 76, and the yoke 76. And a non-magnetic conductor plate 78 having a ring shape. The conductor plate 78 is fixed to the outer circumference of the rotating drum 79. The magnetic field generated in the yoke 76 acts in a direction perpendicular to the conductor plate 78. When the yoke 76 and the conductor plate 78 move relative to each other in the vertical direction with respect to the ground of FIG. 11, the magnetic field exerts a resistance force between the yoke 76 and the conductor plate 78. As shown in FIG. In this embodiment the yoke 76 is formed on the feed lever 70 and the conductor plate 78 is formed on the rotating drum 79. The yoke 76 may be formed on the rotary drum 79, and the conductor plate 78 may be formed on the feed lever 70.

The rotary drum 79 forms the component storage chamber 80 between the apparatus main bodies 72 similarly to 1st Embodiment. An alignment mechanism including a chute groove 81 or a gate port (not shown) is formed in the component storage chamber 80, and the chip components are aligned through the gate port and discharged to a discharge passage (not shown). The chip component clogged in the gate port can be removed by the protrusion 79a formed on the rotating drum 79. The chip component P discharged to the discharge passage is supplied onto the blade 84 described later.

The rotary drum 79 rotates relative to the apparatus body 72. When the chip part P is blocked in the sliding part of the rotary drum 79, an excessive force is applied to the chip and the chip part P may be damaged. On the other hand, since the eddy current damper 75 is formed on the way from the feed lever 70 to the rotating drum 79, the eddy current damper 75 exhibits a torque limit function that deviates from the rotational force of the rotating drum 79. Therefore, breakage of the chip component P can be prevented.

As shown in FIG. 11, the shaft 82 is secured to the device body 72. The rotary drum 79 is supported by the shaft 82 via the one-way clutch 83. The one-way clutch 83 allows the rotating drum 79 to turn only in the direction of turning to the left. Therefore, when the mount lever A is pushed and the feed lever 70 is lowered, the rotary drum 79 rotates integrally to the left by the action of the eddy current damper 75. On the other hand, when the feed lever 70 is raised, the one-way clutch 83 prevents the rotating drum 79 from rotating. As a result, the rotary drum 79 rotates intermittently only in the right turning direction.

In addition, the eddy current damper 75 not only generates a resistance force for rotating the rotary drum 79 but also exerts a resistance force on the feed lever 70 by the repulsive force. That is, when the feed lever 70 is lowered, the rotary drum 79 rotates integrally. Therefore, substantially no resistance acts on the feed lever 70. On the other hand, when the feed lever 70 is raised, the rotary drum 79 prevents rotation in the turning direction to the right. Thus, a resistive force is applied that prevents the feed lever 70 from moving upward. The force that the feed lever 70 moves upward is generated by the spring 71. Therefore, the force which the spring 71 moves is suppressed by the eddy current damper 75, and the feed lever 70 raises at low speed.

One arm of the bell crank 74 is linked to the lower end of the feed lever 70, and the other arm is linked to the blade 84 which is movable in the horizontal direction. Thus, the vertical reciprocating motion of the feed lever 70 is converted to the horizontal reciprocating motion of the blade 84. As described above, the feed lever 70 descends at high speed by the action of the eddy current damper 75 and the one-way clutch 83, and ascends at a low speed. Thus, the blade 84 retracts at high speed and advances at low speed. Therefore, similarly to the blade 5 of the first embodiment, the chip component P mounted on the blade 84 using frictional resistance can be reliably conveyed forward.

The operation of the supply apparatus of the above embodiment will be described with reference to FIGS. 10, 12, and 13.

10 shows the supply apparatus with the mounter lever A positioned at the upper dead center. In this state, the feed lever 70 is in the top position, and the blade 84 is interlocked with the feed lever 70 via the bell crank 74 and is in the foremost position.

Fig. 12 shows the supply apparatus with the mounter lever A starting to descend and reaching the bottom dead center. At the same time as the mounter lever A, the feed lever 70 is also lowered, and the rotary drum 79 is rotated to the left by the action of the eddy current damper 75. That is, a relative speed is generated between the yoke 76 with the magnet 77 attached to the conductor plate 78 to generate an eddy current, and the conductor plate 78 is rotated to the left along with the yoke 76. Drive force is generated. At the same time, the feed lever 7 retracts the blade 84 at high speed via the bell crank 74, and sliding occurs between the chip component P and the blade 84. Therefore, only the blade 84 retreats while the chip component P is not moving.

The conductor plate 78 rotates in the left turning direction, so that the rotary drum 79 is integrally rotated. The protrusion 79a formed on the rotary drum 79 solves the blockage of the chip component P in the gate port, and the chip component P in the component storage chamber 80 is aligned and discharged. If the chip component P is forcibly released from being stuck between the protrusion 79a and another component, the chip component P may be damaged. However, if the eddy current damper 75 has a torque limit function larger than a predetermined value, the torque is released. That is, the eddy current damper 75 has a function to allow relative movement between the yoke 76 and the conductor plate 78. Therefore, breakage of the chip component P can be prevented.

Fig. 13 shows the supply apparatus with the mounter lever A starting to ascend at the bottom dead center. The feed lever 70 rises by the elastic energy of the spring 71. When the feed lever 70 is raised, the blade 84 advances through the bell crank 74. At this time, since the rotation of the rotary drum 79 in the direction turning to the right by the one-way clutch 83 is controlled, the rising speed of the feed lever 70 is suppressed by the action of the eddy current damper 75. In addition, the advancing speed of the blade 84 is also suppressed. That is, by advancing the blade 84 at a low speed, the entire chip part P is pressed forward by one pitch by the frictional force of the blade 84. When the chip component P is conveyed to the foremost position, the first component is adsorbed and discharged by the suction nozzle B of the chip mounter.

14 to 17 show a supply apparatus according to a fourth embodiment of the present invention.

This embodiment is a modification of the embodiment of FIGS. 10 to 13. Parts similar or identical to this embodiment are denoted by the same reference numerals and redundant descriptions are omitted.

In the embodiment shown in FIGS. 10 to 13, the yoke 76 is formed in the feed lever 70 that linearly moves in the vertical direction. Magnet 77 is attached to yoke 76. In this embodiment, the yoke 76 (magnet: 77) moves linearly, and the conductor plate 78 (rotating drum 79) rotates. The opposing area between the yoke 76 and the conductor plate 78 changes with the position of the feed lever 70. Therefore, the loss of the driving force generated by the eddy current damper 75 is large. Therefore, it is inefficient to transmit the driving force to the rotational force of the rotary drum 79.

Therefore, in the fourth embodiment, the substantially fan-shaped rocking member 90 is rotatably supported by the central axis 82 of the rotary drum 79. The long hole 91 extending in the radial direction protrudes from the outer circumferential surface of the rocking member 90. The pin 93 protruding on the side of the feed lever 70 meshes with the long hole 92 to convert the vertical movement of the feed lever 70 into the oscillation movement of the swinging member 90. An eddy current damper (power transmission means 94) is formed between the swinging member 90 and the rotating drum 79. That is, the eddy current damper 94 includes an arc-shaped yoke 95 integrally formed on the outer circumferential surface of the rocking member 90, a plurality of magnets 96 arranged in an arc-like arrangement on the inner circumferential surface of the yoke 95, and rotation. And a circular nonmagnetic conductor plate 78 attached to the outer circumferential surface of the drum 79 and movable through the gap between the magnet 96 and the yoke 95 opposite the magnet 96. The yoke 95 may be formed only on a part of the outer circumferential surface of the rocking member 90. The whole swinging member 90 may be formed of a magnetic body. Further, a one-way clutch 83 is formed between the rotating drum 79 and the central shaft 82 to allow rotation of the rotating drum 79 only in the direction of the arrow (turning to the left in FIG. 14).

The operation of the supply apparatus of the fourth embodiment will be described with reference to FIGS. 14, 16 and 17.

14 shows a state in which the mount lever A is at the upper dead center. In addition, the feed lever 70 is also located at the top. Since the feed lever 70 is at the top, the blade 84 interlocked with the feed lever 70 via the bell crank 74 is in the front end position.

FIG. 16 shows the feeding device with the mounter lever A starting to descend and substantially reaching the bottom dead center. At the same time as the mounter lever A, the feed lever 70 is also lowered, and the pin 93 protruding on the side of the feed lever 70 swings the rocking member 90 in the direction of turning to the left in FIG. By the action of the eddy current damper 94, the rotary drum 79 rotates in the direction of turning to the left after the swinging member 90. That is, since the relative speed is generated between the yoke 95 with the magnet 96 and the conductor plate 78 to generate an eddy current in the conductor plate 78, the conductor plate 78 is connected with the yoke 95. Together, a driving force is generated to rotate in a direction turning to the left. At the same time, the blade 84 retracts at a high speed via the bell crank 74, and sliding occurs between the blade 84 and the chip component P. FIG. As a result, the chip component P does not move, and only the blade 84 retreats.

When the rotary drum 79 rotates in the left turning direction, the protrusion 79a formed on the rotary drum 79 solves the blockage of the chip component P in the gate port. At this time, an excessive load may act on the chip component P. The eddy current damper 94 has a function of releasing torque (torque limit function). Even if the torque is larger than a predetermined value applied to the eddy current damper 94, breakage of the chip component P can be prevented.

Fig. 17 shows the supply apparatus with the mounter lever A starting to ascend at the bottom dead center. The feed lever 70 rises by the elastic energy of the spring 71. When the feed lever 70 is raised, the swinging member 90 swings in the right turning direction, and the blade 84 advances through the bell crank 74. At this time, the rotary drum 79 to which torque is transmitted via the eddy current damper 94 in the swinging member 90 tries to rotate in the upward direction. However, the rotation of the rotary drum 79 in the upward direction is regulated by the one-way clutch 83. Therefore, the brake is applied to the swing in the upward direction of the swinging member 90 by the action of the eddy current damper 94, so that the rising speed of the feed lever 70 is suppressed, and the forward speed of the blade 84 is also suppressed. do. That is, by advancing the blade 84 at a low speed, the entire chip part P can be reliably moved forward by one pitch by the frictional force of the blade 84.

In this embodiment, the rocking member 90 and the rotating drum 79 are coaxially attached so that the operation directions of the yoke 95 and the conductor plate 78 coincide completely. Therefore, the area through which the magnetic flux generated in the magnet 96 passes through the conductor plate 78 does not change, and the driving force generated by the eddy current damper 94 is used very effectively for the rotation of the rotary drum 79. Therefore, when the feed lever 70 is operated at high speed, stable torque is generated in the rotating drum 79. In addition, low speed forward and high speed retraction of the blade 84 are also controlled stably.

18 shows a supply apparatus according to a fifth embodiment of the present invention. This embodiment is a modification of the embodiment shown in FIGS. 14 to 17.

In the fourth embodiment, the load input of the mounter lever A is transmitted to the swinging member 90 via the feed lever 70. In the fifth embodiment, the feed lever and the swinging member are integrated, and the swinging member 90 is directly rocked by the mounter lever A. FIG. Therefore, the contact portion 97 in contact with the mounter lever A is formed on the outer circumferential surface of the swinging member 90. In addition, the rocking member 90 is provided with a projection 98 having a hole 98a with a long radial direction. The pin 74a formed at the end of the bell crank 74 engages the long hole 98a.

In this case, the number of parts can be reduced, and the apparatus can be miniaturized.

19 to 22 show a supply apparatus according to the sixth embodiment of the present invention.

In this embodiment, the supply apparatus includes a feed lever 70, a rotating drum 79, a one-way clutch 83, an eddy current damper 100, and the like. The configuration of the feed lever 70, the spring 71, the bell crank 74, the blade 84, the rotary drum 79, the one-way clutch 83 and the like are the same as the embodiments shown in Figs. same. In this embodiment, the same components are denoted by the same reference numerals and redundant descriptions are omitted.

The eddy current damper 100 includes a circular yoke 101 having a magnet 102 attached to an inner surface thereof, and a disc-shaped nonmagnetic conductor plate 103 disposed in a gap between the yoke 101. The plurality of magnets 102 are arranged and attached in the circumferential direction. The yoke 101 is attached to the rotation shaft 104 via the one-way clutch 105 and can rotate only in the direction turning to the right in FIG. 19. The conductor plate 103 is attached coaxially with the yoke 101 and can rotate both right and left.

The elastic belt 106 is formed on the outer circumference of the yoke 101 and is in contact with the outer circumferential surface of the rotating drum 79. In this embodiment, an elastic belt 106 having a circular cross section is used. The shape of the elastic belt 106 may be rectangular. By the frictional force of the elastic belt 106, the rotation of the yoke 101 is transmitted to the rotary drum 79, the rotary drum 79 is rotated.

The conductor plate 103 is connected to the link 108 via the pin 107. The link 108 is linked to the feed lever 70 via the bell crank 109. Thus, the vertical movement of the feed lever 70 is converted to the oscillating rotational movement of the conductor plate 103 on the shaft 104.

Next, the operation of the supply apparatus of the above embodiment will be described with reference to FIGS. 19, 21 and 22.

19 shows the supply apparatus with the mounter lever A in the upper dead center. The feed lever 70 is also at the top. Since the feed lever 70 is at the top, the blade 84 connected to the feed lever 70 via the bell crank 74 is at the front end.

FIG. 21 shows the feeding device with the mounter lever A starting to descend and substantially reaching the bottom dead center. At the same time as the mounter lever A, the feed lever 70 is also lowered. The conductor plate 103 connected to the feed lever 70 via the bell crank 109 and the link 108 oscillates and rotates to the right direction. At this time, by the action of the eddy current damper 100, the yoke 101 rotates to the right after the conductor plate 103. As shown in FIG. That is, a relative speed is generated between the yoke 101 with the magnet 102 attached to the conductor plate 103, so that an eddy current is generated in the conductor plate 103, and the yoke 101 is right along with the conductor plate 103. The driving force to rotate in the direction of rotation is generated. At the same time, the blade 84 retracts at a high speed via the bell crank 74, and sliding occurs between the blade 84 and the chip component P. FIG. As a result, the chip component P does not move, and only the blade 84 retreats.

When the yoke 101 rotates in the right turning direction, the rotary drum 79 rotates in the left turning direction by the frictional force of the elastic belt 106 following the yoke. As a result, the protrusion 79a releases the blockage of the chip component P in the gate port. At this time, an excessive load acts on the chip component P. However, since the eddy current damper 100 has a torque limit function, breakage of the chip component P can be prevented.

Fig. 22 shows the supply apparatus with the mounter lever A starting to ascend at the bottom dead center. The feed lever 70 rises by the elastic energy of the spring 71. When the feed lever 70 is raised, the conductor plate 103 connected to the feed lever 70 via the bell crank 109 and the link 108 rotates in the turning direction to the left in FIG. Therefore, the yoke 101 also rotates to the left by the action of the eddy current damper 100. However, rotation in the turning direction to the left by the one-way clutch 105 is prevented. Therefore, the rotating drum 79 does not rotate either.

Since the one-way clutch 105 prevents rotation of the yoke 101 in the left turning direction, the brake also rotates in the direction in which the conductor plate 103 rotates through the eddy current damper 100. Takes As the feed lever 70 rises, the blade 84 advances through the bell crank 74. However, the rising speed of the feed lever 70 is suppressed by the rotational resistance of the conductor plate 103, and the forward speed of the blade 84 is also suppressed. That is, by advancing the blade 84 at low speed, the entire chip part P can be moved forward by one pitch by the frictional force of the blade 84.

In this embodiment, the yoke 101 and the conductor plate 103 constituting the eddy current damper 100 are formed coaxially. Therefore, the area through which the magnetic flux passes does not change, and the eddy current damper 100 can generate stable driving force. The yoke 101 and the conductor plate 103 are formed in a circular shape and the rotation radius is small, so that the influence of inertia can be significantly reduced. Therefore, dangerous effects such as vibration can be suppressed when operating at high speed. In addition, the yoke 101 and the conductor plate 103 are formed to be rotatable on the shaft 104 separately from the rotating drum 79. Therefore, the yoke 101 and the conductor plate 103 can be arranged freely. In addition, the flexibility of the layout is enhanced, and it is also possible to lower the height of the supply apparatus.

Fig. 23 shows a supply apparatus according to the seventh embodiment of the present invention. This embodiment is a modification of the embodiment of FIGS. 19 to 22.

In the sixth embodiment, the elastic belt 106 is disposed on the outer circumference of the yoke 101. Due to the frictional force of the elastic belt 106, the rotary drum 79 rotates following the yoke 101. In the seventh embodiment, the gears 101a and 79a formed on the outer circumference of the yoke 101 and the outer circumference of the rotary drum 79 are engaged with each other.

In this case, the gears 101a and 79a can be reliably rotated in conjunction with each other.

This invention is not limited to the said embodiment.

In the said embodiment, a blade is used as a means of conveying the chip component P discharged | emitted from the discharge path | pass to a discharge outlet. You may use the conveyance belt of the shape without a stage. In this case, the drive pulley for driving the belt can be intermittently rotated by the ratchet mechanism using the feed lever.

Further, in order to release the chip component blocked in the gate port, the protrusion of the rotating drum is used as the rotating member. The rotary blade described in Japanese Patent Laid-Open No. 11-71018 may be used. In this case, the rotating drum need not be used.

As the conversion mechanism, friction belts are used in the first and second embodiments. In the third to seventh embodiments, eddy current dampers are used. Friction belts and eddy current dampers are not limited. It can use if it transmits power and has a torque limit function.

As can be seen from the above description, the supply apparatus of the present invention includes a feed lever reciprocating according to the input load from the chip mounter, and a conversion mechanism for converting the reciprocating motion of the feed lever into the rotational motion of the rotating member. Therefore, a drive source for rotating the rotating member becomes unnecessary, and the structure can be simplified. In addition, the adsorption discharge of the chip components and the rotation of the rotating drum can be simultaneously realized.

Moreover, the conversion mechanism has a torque limit function by sliding generated when the rotational resistance of the rotating member is larger than a predetermined value. Even if the chip component blocked in the gate port is pinched in the rotating member, the excessive force is prevented from being applied to the chip component beyond the rotational force of the rotating member. Therefore, it is effective to prevent breakage of chip components.

Claims (10)

A component compartment accommodating a plurality of chip components; An alignment passage for aligning and discharging chip components in the component storage chamber in a row; A rotating member for releasing blockage of the chip component in the alignment passage; As a supply device for a chip component comprising: A feed lever that linearly reciprocates or swivels in response to a load input from a chip mounter; And A converter mechanism having a torque limit function for converting an operation of the feed lever into a rotational motion of the rotating member and deviating from the rotational force of the rotating member when the rotational resistance of the rotating member is greater than a predetermined value; Supply device for the chip component comprising a. The method of claim 1 wherein the alignment passage is A chute groove formed on an inner circumference of the component storage chamber and configured to slide the chip component in a predetermined direction and slide downward; A gate port formed at a lower end of the chute groove and allowing one chip component to slide downward along the chute groove in a predetermined posture; A discharge passage for aligning and discharging the chip components passing through the gate port; Supply device for the chip component comprising a. The said rotating member is formed in the inner wall of the rotating drum which comprises one side wall of the said component storage chamber, rotates along the inner periphery of the said component storage chamber, and stops at the said gate port. And a projection which releases the blockage by pressing the chip component in an abnormal posture in the opposite direction to the discharge direction. The method of claim 1 or 2, wherein the conversion mechanism A shaft supporting the feed lever so as to be swingable; A driving pulley attached to the shaft; A driven pulley attached to the rotating member; A one-way clutch formed between the shaft of the feed lever and the drive pulley or between the rotating member and the driven pulley; And A belt wound between the drive pulley and the driven pulley; Including, And the belt slides when a torque greater than a predetermined value is applied to the driving pulley or the driven pulley. The method of claim 1 or 2, wherein the conversion mechanism Power transmission means formed between the feed lever and the rotating member and using an eddy current damper; And A one-way clutch for rotating the rotating member in only one direction; Supply device for the chip component comprising a. The method of claim 1 or 2, wherein the conversion mechanism A swiveling member interlocked with the feed lever and formed coaxially with the rotation member; Power transmission means formed between the swinging member and the rotating member and using an eddy current damper; And A one-way clutch for rotating the rotating member in only one direction; Supply device for the chip component comprising a. The method of claim 1 or 2, wherein the conversion mechanism A first swinging member interlocked with the feed lever and swinging by an operation of the feed lever; A second oscillating member formed coaxially with the first oscillating member, oscillating according to the movement of the first oscillating member, and transmitting power to the rotating member; Power transmission means formed between the first and second swinging members and using an eddy current damper; And A one-way clutch for rotating the rotating member in only one direction; Supply device for the chip component comprising a. The power transmission means using the eddy current damper according to claim 5 A nonmagnetic conductor formed in one member; A yoke formed on the other member and constituting a jaw; And A magnet attached to the yoke such that magnetic flux acts in a direction orthogonal to the nonmagnetic conductor; Supply device for the chip component comprising a. The power transmission means using the eddy current damper A nonmagnetic conductor formed in one member; A yoke formed on the other member and constituting a jaw; And A magnet attached to the yoke such that magnetic flux acts in a direction orthogonal to the nonmagnetic conductor; Supply device for the chip component comprising a. 8. The power transmission means of claim 7, wherein the power transmission means using the eddy current damper is A nonmagnetic conductor formed in one member; A yoke formed on the other member and constituting a jaw; And A magnet attached to the yoke such that magnetic flux acts in a direction orthogonal to the nonmagnetic conductor; Supply device for the chip component comprising a.