CN1170751C - Feeder for integrated circuit chip elements - Google Patents

Abstract

A feed lever is lowered, correspondingly to the load input of a chip mounter. A rotary drum is intermittently moved through a conversion mechanism, intermittently in one direction. Chip components placed in a component accommodation chamber are aligned and discharged. When a rotation resistance larger than a predetermined value acts, a belt is slid, and breaking of a chip component is prevented.

Description

Feeder for integrated circuit chip elements

Technical field

The present invention relates to the feed arrangement of integrated circuit chip elements, particularly in order to chip elements is aligned to row's (OK) and by using the load that comes from chip mounter to import feed arrangement with the component feeding.

Background technology

A kind of chip elements feed arrangement is arranged traditionally, this feed arrangement comprises that one is formed between a static drum and the going barrel, be suitable for holding the accommodating chamber of component, one is formed on the lubricating substance groove of component accommodating chamber inner peripheral, one is formed on the gate of lubricating substance groove lower end, it allows chip elements to slide to pass through gate one by one with predetermined attitude along the lubricating substance groove, one discharging path is in order to come into line into chip elements a delegation or a row and to unload component, an and claw shaped piece that is formed on the going barrel inwall, its effect is to energize in the chip elements that stops at the gate mouth with abnormal attitude with the direction opposite with discharge direction, makes chip elements discharge (seeing that Japanese uncensored patent application discloses 11-71019 number) from blocked state.Described going barrel rotates along a direction by a direct motor drive.

The chip elements that is aligned to delegation and draws off from the discharging path is sent to together material level by a conveyer that is arranged on the end in discharging path and puts.There, chip elements is held and takes out by the chip erector one by one, and is installed on printed circuit board (PCB) or other analogue.Therefore, rotate going barrel, come the driven in rotation drum with drive source again with regard to unnecessary by the propulsive effort that utilizes chip mounter.The favourable point of this arrangement is, structure can be simplified, and the attraction of chip elements and take out and can synchronously carry out.

In recent years, people require to have a kind of component feed arrangement with high feeding ability.Gradually realized that each chip elements of feeding only needs the time in 0.1 second.When chip elements during with such high speed feed, just be necessary to make the rotation of going barrel at high speed, like this, if component is stuck between the claw shaped piece and gate mouth of going barrel, component just might rupture.

Summary of the invention

Therefore, an object of the present invention is to provide a kind of feed arrangement, wherein, do not need to come the driven in rotation part with the special driving source, and in the time of in component is stuck in revolving part, breaking of component can be prevented by avoiding a power excessive, that add thereon.

To achieve these goals, the invention provides a kind of feed arrangement of chip elements, it has a component accommodating chamber that holds many chip elements,, an align to path, be aligned to delegation so that they are drawn off in order to chip elements with the component accommodating chamber, one revolving part, in order to solve obstructing problem at align to path chips component, it comprises that one can be corresponding to the load input of chip mounter, linearly or reciprocating pivotally feed bar, and one switching mechanism become rotatablely moving of revolving part with movement conversion with feed bar, and when the rotary resistance of revolving part is higher than a predetermined value, has the torque limitation function of the rotational force of avoiding revolving part.

In this feed arrangement, when chip mounter has load when input, feed bar is crank motion linearly or pivotally just.This moves through switching mechanism and converts rotatablely moving of revolving part to.The chip elements release that revolving part will be blocked in the align to path is come.At this moment, chip elements might be stuck between revolving part and the component accommodating chamber, thereby produces the big resistance to rotation.In this case, because function is placed restrictions in the torque of switching mechanism, the rotational force of revolving part is broken away from, and is added on the chip elements to prevent excessive load, and like this, breaking of component just can prevent.

Preferably, described align to path comprises that one is formed on the lubricating substance groove in the inner peripheral of component accommodating chamber, it can be aligned in chip elements on one direction of being scheduled to, component to downslide, one is formed on the gate of lubricating substance groove lower end, it can allow chip elements with a predetermined attitude along the lubricating substance groove to downslide and by gate, and comprise a discharging path, in order to will be chip elements by the threshould door come into line into delegation so that discharging.

In this case, because the effect of lubricating substance groove, chip elements comes into line by direction, in addition, when chip elements passed through gate, the attitude of component was organized, therefore, because the arrangement in these two steps, at any time, chip elements all is arranged to constant direction and attitude.

Preferably, revolving part is arranged on the claw shaped piece parts on the inwall of going barrel of a sidewall of forming the component accommodating chamber, it can be along the inner peripheral rotation of component accommodating chamber, and can energize in the chip elements that stops at the gate place with abnormal attitude with the direction opposite, to discharge the obstruction of component with discharge direction.

In this case, the part of component accommodating chamber plays a part revolving part, and the quantity of the parts of device can reduce, and the structure of device can be simplified.

As for switching mechanism, can use dissimilar switching mechanism, for example, switching mechanism can comprise that also one supports the axle of described feed bar pivotally, one is contained in the drive pulley on this, one is contained in the driven belt pulley (driven pulley) on the revolving part, one is arranged between the axle of feed bar and the drive pulley or revolving part and be driven free-wheel clutch between the belt pulley, one is arranged on and around the belt between drive pulley and the driven pulley, thereby when a torque that is higher than predetermined value is added on drive pulley or the driven pulley, belt will skid, thereby function is placed restrictions in the realization torque.

Also be preferably, switching mechanism comprises that one is arranged between feed bar and the revolving part and utilizes the power transmission of an eddy current retarder, a free-wheel clutch, and it only allows revolving part to do unidirectional rotation.In this case, eddy current retarder produces the torque limitation function.Described eddy current retarder can comprise that one is arranged on the non-magnetic conductor of one of this part, and one is provided with the yoke of this part on another, and it forms a magnetic circuit, and a magnet that is contained on the yoke vertically acts on the described non-magnetic conductor magnetic flow.When between conductor and yoke, relatively moving, in conductor, produce an eddy current, it is on the direction that the magnetic flow of the eddy current that is produced is prevented from changing.Described eddy current produces a resistance between yoke and conductor.Because this resistance, revolving part can be followed the feed bar rotation, if under the situation that chip elements is aliging, one chip elements is stuck in revolving part and near between of revolving part, the effect of eddy current retarder is to avoid an excessive power to be added on the revolving part, thereby breaking of chip elements prevented.Described eddy current retarder does not have slipper (parts), so the torque limitation function can not change, for example can be owing to wearing and tearing change.It is one constant over a long time that the torque limitation function can keep.

In addition, described switching mechanism can comprise one with the revolving meber of feed bar interconnection, and be provided with coaxially with described revolving part, a power transmission is arranged between revolving meber and the revolving part and utilizes an eddy current retarder, and a free-wheel clutch, so that revolving part can only rotate in one direction.When the power transmission that utilizes eddy current retarder was arranged between feed bar and the revolving part as mentioned above, the loss of propulsive effort was big, because the former is linearly moving, and the latter rotates.On the other hand, when eddy current retarder is arranged between revolving meber and the revolving part and during coaxial rotation, can reduces by the loss of the propulsive effort that eddy current retarder produced, even when feed bar is mobile with linearity, also be like this.

Preferably, switching mechanism comprise one with one first revolving meber of feed bar interconnection, it can be fed bar and drive and turn round.One second revolving meber and the coaxial setting of first revolving meber, can turn round corresponding to moving of first revolving meber, one power transmission device is arranged between first, second revolving meber and utilizes an eddy current retarder, and also comprising a free-wheel clutch, it only allows described revolving part to rotate in one direction.Also be in this case,, also can also realize the effect of eddy current retarder effectively, because first, second revolving meber is a coaxial rotating even do linearly when mobile when feed bar.

In addition, first and second revolving meber and eddy current retarder mechanism can be arranged on the position that is different from feed bar and revolving part, so the alerting ability of layout is increased, and the height of feed arrangement can reduce.When revolving meber and the coaxial rotation of revolving part, as mentioned above, the size of revolving meber increases, the motion of feed bar is subjected to effect of inertia and is slower, on the other hand, in this switching mechanism, first and second revolving mebers can form to such an extent that have a little size, therefore, inertia-responsive influence can reduce.

Description of drawings

Fig. 1 is the block diagram according to the feed arrangement of first embodiment of the invention.

Fig. 2 shows the inner structure of the feed arrangement among Fig. 1.

Fig. 3 is the cutaway view along the III-III line among Fig. 1.

Fig. 4 is the cutaway view along the IV-IV line among Fig. 1.

Fig. 5 A to 5D is the service condition figure of a driver train shown in Figure 1.

Fig. 6 is the cutaway view along the VI-VI line among Fig. 2.

Fig. 7 A and 7B are respectively the block diagrams of integrated circuit chip elements.

Fig. 8 is the front elevation of the feed arrangement of second embodiment of the invention.

Fig. 9 is the front elevation of the feed arrangement among Fig. 8 when descending.

Figure 10 is the front elevation of the feed arrangement of third embodiment of the invention.

Figure 11 is the cutaway view along the X-X line among Figure 10.

Figure 12 is when its (feed arrangement) front elevation when being lowered by.

Figure 14 is the front elevation of the 4th embodiment of feed arrangement of the present invention.

Figure 15 is the cutaway view along the XV-XV line among Figure 14.

Figure 16 is the front elevation when the feed arrangement among Figure 14 descends.

Figure 17 is the front elevation when the feed arrangement among Figure 14 rises.

Figure 18 is the front elevation of the 5th embodiment of feed arrangement of the present invention.

Figure 19 is the front elevation of the 6th embodiment of feed arrangement of the present invention.

Figure 20 is the section drawing along the intercepting of the XX-XX line among Figure 19.

Figure 21 is the front elevation when the feed arrangement among Figure 19 descends.

Figure 22 is the front elevation when the feed arrangement among Figure 19 rises.

Figure 23 is the front elevation of the 7th embodiment of feed arrangement of the present invention.

The specific embodiment

Fig. 1-Fig. 6 shows first embodiment of chip elements feed arrangement of the present invention.In this embodiment, an at both ends portion has the parts P (see Fig. 7 A) of the dihedral chip electronic unit of electrode as chip.On the front surface of the vertical wall segments 2 of transfer body 1, formed a recessed step 2a, as shown in Figure 3.Formed a narrow space by a front side cap 4 that is fixed on the front side of vertical wall segments 2.In this space, a blade 5 is slidably disposed on horizontal direction as the example of a transmission parts.Side cover 3 is fixed on the upside of vertical wall 2 on one, ejects when being transmitted to prevent a parts P.The one component P that is used to align becomes the guiding groove 6 of delegation and guiding element parts P to be formed by the upper surface of the inside face of the inside face of above-mentioned concave step 2a, front side cap 4, blade 5 and the lower surface of going up side cover 3.

Blade 5 is that the metal sheet that approaches forms, and it has a slotted hole 5a who extends in the horizontal direction, and a hole 5b who holds spring forms within it.In above-mentioned slotted hole 5a, insert a pin 7 that is formed on the vertical wall segments 2 and comes out from the projection of wall portion, and guide blades in the horizontal direction.One spring 8 is contained among the spring accommodation hole 5b.The radially two side portions of spring 8 is contained among the groove 2b of vertical wall segments 2 and (see figure 3) among the perforate 4a on the front side cap 4.The back of spring 8 is supported by spring accommodation hole 5b, and its front is supported by the front end face of groove 2b and perforate 4a.Whenever spring 8 is blade 5 energizes in backward direction all.

The rear end 5C of blade 5 be rotatably installed in feed arrangement body 1 on, and the transmission cam 9 (ratchet gear) that can on one 10, rotate contact.Above-mentioned spring 8 and cam 9 have been formed an actuating device, with so that blade 5 move around.Cam 9 has top 9a and bottom 9b, as shown in Figure 2, and on the direction shown in the arrow along with ratchet device is done rotation off and on, this point will be narrated afterwards.Correspondingly, when the rear end of blade 5 when top 9a rises, blade 5 is to move forward at a slow speed.When rear end 5C dropped into bottom 9b, blade 5 at high speeds moved backward.The speed of advance of blade 5 is set in a such value: make a predetermined friction confining force act on the blade 5 and place on the component P of blade 5 upsides.The astern speed of blade 5 is set in such value: make the friction force between the component P of blade 5 and side placed on it ineffective.Parts P1 on the top of the component P that is forwarded by blade 5 comes out from last side cover 3, is attracted by the attraction mouth B of chip erector.

One ratchet device that is used for rotating with gap above-mentioned cam (ratchet gear) 9 is arranged on the vertical wall segments 2 of feed arrangement body 1.Described escapement comprises a connecting rod 11, it has a upper end that is bearing on the axis of revolution 12, this axis of revolution parallels with the S. A. of ratchet gear 9 as a bolster, one feed bar 13 is arranged on the above-mentioned axis of revolution as supporting pivotally, first and second gusset piece 14 and 15 is distinguished rotatably coaxial settings with ratchet gear 9, as shown in Figure 4.First and second ratchet 16 and 17 is installed on first and second gusset piece 14 and 15, rotatably as the supporting interlocking axle 18 and 19 on and pawl 16 and 17 and ratchet gear ingear direction on be supplied to energy (being clockwise direction) in Fig. 2.First ratchet 16 is meshed with ratchet gear 9, and its position is near axis of revolution 12 places, second ratchet 17 then on axis of revolution 12 position far away with ratchet gear 9 engagements.The slotted hole 11a of longitudinal extension and 11b are respectively formed at the middle part and the bottom of connecting rod 11.The interlocking axle 18 of first ratchet 16 is meshed with the slotted hole 11a that is formed on connecting rod 11 middle parts, and lock 20 that is arranged on second gusset piece 15 then is meshed with the slotted hole 11b of connecting rod 11 bottoms.In the 11 rotating whiles of connecting rod, ratchet 16 and 17 move around at fore-and-aft direction (at the left and right directions of Fig. 2).

The downward application force next from the mounting rod A of chip erecting frame is added on the free end 13a of above-mentioned feed bar 13 at predetermined period with gap.One comprises that first spring 21 of a tension spring is arranged between feed bar 13 and the connecting rod 11.One first stop motion mechanism 23 is formed on the feed bar 13 to contact the aft end face of connecting rod 11.Because stop motion mechanism 23 contacts with the aft end face of connecting rod 11, the anglec of rotation between feed bar 13 and the pipe link 11 can be regulated so that first spring 21 remains on a predetermined pull and is added in state on first spring.Feed bar 13 is energized by one second spring 22, and its direction is opposite with the direction of application force.The initial position of feed bar 13 is limited by one the 3rd stop motion mechanism 25.In addition, have one second stop motion mechanism 24 be used for being adjusted in forwards to the revolution (, being in the counterclockwise direction) of connecting rod 11 at Fig. 2.The stop position of second stop motion mechanism can be regulated.

With reference to Fig. 5 A, 5B, 5C and 5D the service condition of ratchet device is described below.

At initial condition, shown in Fig. 5 a, feed bar 13 is promoted by spring 22 and contacts with stop motion mechanism 25.Connecting rod 11 makes it the clockwise direction revolution by stop motion mechanism 23.In addition, two ratchets 16 and 17 are in the symmetric position at 180 ° at ratchet gear 9 two ends and are meshed with ratchet gear 9 respectively.

Then, the free end 13a of feed bar 13 is mounted the bar A of device toward pressing down, so that feed bar 13 begins to do the anticlockwise direction revolution, shown in Fig. 5 B.Synchronously, connecting rod 11, moves with slotted hole 11a and 11b ingear interlocking axle 18 and 20 with anticlockwise direction revolution (moving forward) in a clockwise direction owing to the effect of spring 21 and stop motion mechanism 23.Therefore plate 14 is made clickwise, and plate 15 is then done the anticlockwise direction rotation.Correspondingly, be arranged on ratchet 16 on the plate 14 and that be positioned at upside and be meshed, make ratchet gear 9 make clickwise with ratchet gear 9.Side by side, be arranged on the plate 15 and the ratchet 17 that is positioned at downside slides with anticlockwise direction at the circumferential surface of ratchet gear 9, thereby allow ratchet gear 9 rotations.

In Fig. 5 C, feed bar 13 is pushed downwards to the lower position.In this state, the top of connecting rod 11 contacts with stop motion mechanism 24 and by stop, ratchet gear 9 stops the rotation.So, mesh at the ratchet 17 of downside and the next bottom 9b of ratchet gear 9.Even the angle of revolution of feed bar 13 greater than the angle of revolution of connecting rod 11, also has only feed bar 13 revolutions at connecting rod 11 contact stop motion mechanisms 14, because spring 21 is arranged between feed bar 13 and the connecting rod 11 after by stop.Like this, the stop position of connecting rod 11 just can correctly be regulated.

Then, when the downward thrust of mounting rod A was released, feed bar 13 was under the application force of spring 22, and revolution in the direction of the clock is shown in Fig. 5 D.Contacting of the rear end of stop motion mechanism 23 and connecting rod 11 makes connecting rod 11 along with feed bar 13 turns round (moving backward) in a clockwise direction.Carve at this moment, make ratchet gear 9 make clickwise, meanwhile, slide with anticlockwise direction on the circumferential surface of ratchet gear 9 at the ratchet 16 of upside, thereby allow ratchet gear 9 to rotate at ratchet 17 downside, that be meshed with ratchet gear 9.When feed bar 13 contacts with stop motion mechanism 25 and when stopping, connecting rod 11 also stops revolution.That is, shown in Fig. 5 A, two ratchets 16 and 17 are meshed with ratchet gear 9 at 180 ° of symmetric position places of ratchet gear 9.

In this embodiment, when feed bar descends and rise, in other words, when connecting rod 11 anticlockwise directions (moving forward) revolution, and also move (moving backward) in the direction of the clock, ratchet gear can high speed revolution, does strong rotation because ratchet gear 9 is driven.In addition, at any time, at least one in the ratchet 16 and 17 is meshed with ratchet gear 9.Though do not have to install in addition special ratchet, ratchet gear 9 still can guarantee not do contrarotation.

Be positioned at the angle θ that near axis of revolution 12 first ratchets 16 rotate ratchet gears 9 ₁Than the angle θ that is positioned at away from second ratchet, the 17 rotation escapements 9 of axis of revolution 12 ₂For little.That is, when blade 5 fell into the bottom 9b of cam, the anglec of rotation was little, and when blade 5 rose on the 9a of the top of cam 9, the anglec of rotation was big.Correspondingly, the rear end 5C of blade 5 can rise to the top 9a of cam 9 continuously and not need temporarily to stop on path that removing top 9a.Therefore, can realize advancing continuously of blade 5, the ability of the transmission component P of blade 5 can improve.

On vertical wall portion 2 back, be provided with an alignment feed arrangement 30, it is aligned to delegation to component P and they is fed on the blade 5.

Specifically, a static drum 31 with round recess 32 is fixed on the back upper place part of vertical wall portion 2 of feed arrangement body 1 integratedly.One going barrel 33 is rotatably installed in the circular recess place 32 of static drum 31.One cylindrical shape component accommodating chamber 34 is formed in the middle of them.Component P aligns in a longitudinal direction and they is formed on to the half arc charging conduit 35 that glides on the inner peripheral edge surfaces of recess 32 of static drum 31.The width of charging conduit 35 is big than the height of chip elements P or width, and is little than its length L.Chip elements P also can have the columniform shape shown in Fig. 7 B except the flat shape hexahedral shape shown in Fig. 7 A.In the lower end of charging conduit 35, be formed with a gate 36, it can make component P along charging conduit 35 with predetermined attitude to glide (being positioned on one side) to the attitude of longitudinal direction, pass through gate one by one.In addition, the path 37 of a discharging is arranged, the component P by gate 36 is aligned to delegation, and they are directed on the blade 5.The width of gate 36 and highly design to such an extent that equal the width of charging conduit 35 respectively.For this reason, will in gate 36, block to the component P that glides with attitude up.On the inside face of going barrel 33, be formed with a pawl 38 (see figure 6)s, it provides energy with unblocking with the direction opposite with discharging (among Fig. 2, in the counterclockwise direction) for the component P that stops at gate 36 places with unusual attitude.So even a component P is blocked in gate 36 places, the pawl 38 of going barrel 33 is blocked in taking-up component P in the gate 36 or it is kept to the side, thus the problem of unblocking.

One switching mechanism is arranged between feed bar 13 and the going barrel 33, the anti-clockwise that it converts the revolution of feed bar 13 to going barrel 33 rotatablely moving intermittently.

Specifically, a driven pulley 39 (see figure 1)s are formed on the outside face of going barrel 33.Driven pulley 39 links to each other by a belt 41 with a drive pulley 40.If a chip elements P is owing to the rotation of going barrel 33 is stuck between a going barrel 33 and the periphery spare, then belt 41 will skid on belt pulley 39 or 40, and promptly belt 41 plays the function of a torque-limiting.Like this, breaking of component P just can be prevented.As shown in Figure 4, described drive pulley 40 is rotatably to be inserted on the axis of revolution 12 of connecting rod 11.Feed bar 13 is connected to by one first free-wheel clutch 42 on the outer peripheral edges of salient of drive pulley 40.In addition, axis of revolution 12 is interconnected by one second free-wheel clutch 43 with the inner peripheral of drive pulley 40.In this embodiment, axis of revolution 12 is static.

When the free end 13a of feed bar 13 is pushed downwards doing anticlockwise direction (direction of seeing) when revolution in Fig. 2, drive pulley 40 since first one-way clutch 42 and with anticlockwise direction with feed bar 13 rotations (direction of in Fig. 2, seeing).On the other hand, when feed bar 13 driven by spring 22 and as the direction in Fig. 2, seen when doing the clockwise direction revolution, thereby first free-wheel clutch 42 is failure to actuate and is made drive pulley 40 trend towards remaining on halted state.Yet because free-wheel clutch 42 has cliding friction, described drive pulley 40 is to a certain extent along with feed bar 13 is made clickwise.At this moment, encircling second free-wheel clutch 43 that is fixed in axis of revolution 12 in it will stop drive pulley 40 to make right-hand revolution.As a result, described drive pulley 40 can remain on its halted state reliably.That is 40 rotations off and in the counterclockwise direction of drive pulley.

In Fig. 1, for being fed in the component accommodating chamber 34, goes component P, at the back upside of stationary wheel 31 a component charging chamber 50 is set.Upside in this component charging chamber 50 can be provided with a loose mail box 51 with pulling down, and it is to be in the attitude of turning around.Described component charging chamber 50 and component accommodating chamber 34 link each other by a passage (not shown).By gravity, a component P can slide in the component accommodating chamber from component charging chamber 50.

In Fig. 2, discharging path 37 comprises from gate 36 to blade a straight line path of 5.In Fig. 1, this path comprises two linear portions with different gradient.One supporter that moves around in the horizontal direction 52 is arranged on the bottom in path downside, that have minor grade.In this case, because the gradient in the path on downside is less, chip elements can successfully be sent on the blade 5.Yet the sliding capability of component descends.Therefore, by at vertical direction moveable support 52, the stop of chip elements is prevented from.Detailed condition sees also Japanese Patent and discloses 10-189549 number, and that is the patent of being filed an application before the applicant of the present invention.

In addition, in Fig. 2, for simplicity, the rear end 5C of blade 5 is that the circumferential surface of direct and cam 9 is contacted.In Fig. 1, increased by a follow mechanism that contacts with cam 9.This cam following mechanism links to each other with the rear end of blade 5.In order to have replaced moving the spring 8 that energy is provided backward for Cam Follower 53 provides a spring 54 of energy for blade 5 in the cam direction.This structure is identical with the structure described in 10-185517 number the patent.

Be used for will be from the discharging path chip elements P that comes out of the 37 unloadings transmission member of delivering to the extracting position that attracts mouth B be not limited to blade 5, also can be with a belt conveyor.Belt conveyor, can rotate by the power that pushes away downwards of the mounting rod A of chip mounter off and on an escapement mechanism or its similar means.

Fig. 8 and Fig. 9 show second embodiment of feed arrangement of the present invention.

In first embodiment, as an example, the feed bar 13 that receives operational forces from the bar A of erector is rotating on bolster 12.In this second embodiment, being provided with vertically moving first feed bar 60 and can rotating second feed bar 64.

First feed bar 60 is bearing in vertical direction movably by a pair of upper and lower strut 61 and 62, and the energy of being given to move up by a spring 63 at any time.In the bottom of first feed bar 60, be formed with a horizontally extending slotted hole 60a, a pin 64 that is fixed on the top of second feed bar 64 meshes with slotted hole 60a slidably.One 65 bottom that is fixed on second feed bar 64.Described second feed bar 64 can turn round on axle 65.One drive pulley 67 is installed on the axle 65 by a free-wheel clutch 66.When axle 65 anticlockwise directions rotated, described free-wheel clutch 66 pinned axle 65, and is then slack when axle 65 right-hand revolutions.One belt 41 is arranged on and is looped around on the drive pulley 67, and a driven pulley 39 is arranged on the side of going barrel 33.In addition, there is a free-wheel clutch 68 to be arranged on the going barrel 33.33 of this going barrels are by being installed on the stationary axle 69 to power-transfer clutch 68.The alignment feed arrangement 30 that is similar among first embodiment is being set in going barrel 33.

In this second embodiment, with the bar A of erector first feed bar 60 is pushed away downwards, as shown in Figure 9, described second feed bar 64 is done the anticlockwise direction revolution, and free-wheel clutch pins so that the rotation of drive pulley 67 anticlockwise directions.So driven pulley 39 is along with drive pulley 67 is rotated by belt 41, this makes the rotation of revolving wheel 33 anticlockwise directions.

When the power that pushes away downwards of the bar A of erector was removed, because the effect of spring 63, first feed bar 60 upwards returned and makes the revolution of second feed bar, 64 clockwise directions.Yet free-wheel clutch is not worked to clickwise.Drive pulley 67 remains on halted state.So free-wheel clutch has cliding friction drive pulley 67 also to continue to do the short time clickwise.At this moment, the free-wheel clutch 68 in the going barrel 33 makes drive pulley stop to do right-hand revolution.Therefore, drive pulley 67 can stably remain on halted state.Correspondingly, the vertical shifting of first feed bar 60 makes going barrel 33 do the anti-clockwise rotation off and on.

In this embodiment, belt 41 also has the function of torque limitation.Even chip elements P is stuck between going barrel 33 and the gate 36, belt 41 will slide on belt pulley 39 or 67, avoid this power.Therefore, the fracture of chip elements is prevented.

Figure 10-13 shows the 3rd embodiment of feed arrangement of the present invention.

This feed arrangement comprises the spring 71 that a feed bar 70 and is used to that feed bar 70 is upwards returned provides energy.Feed bar 70 is bearing on the device body 72 (seeing Figure 11) in vertical direction movably by a connecting rod 73 and a crank throw 74.The mounting rod A of chip mounter is arranged on the upside of feed bar 70.The bar A of peace frame device is together with the running of chip peace frame device, vertical shifting in a stroke range of being scheduled to.By the bar A of erector, feed bar 70 is pushed down.

One eddy current retarder (power transmission) 75 is arranged between a feed bar 70 and the going barrel 79.Described eddy current retarder 75 comprises that one has the yoke 76 in U-shaped cross section, and it and feed bar 70 are formed together.One magnet 77 is installed on the yoke 76, an annular arrangement, non-magnetic conductor plate 78 removable gaps by yoke 76.Conductor plate 78 is fixed on the outer peripheral edges of going barrel 79.The magnetic field that produces in yoke 76 acts on conductor plate 78 in vertical direction.When yoke 76 and conductor plate 78 with respect to the drawing of Figure 11 when vertical direction is moved away from each other, magnetic field applies a resistance between yoke 76 and conductor plate 78.In this embodiment, yoke 76 is formed on the feed bar 70 and conductor plate 78 is formed on above the feed bar 70.

Going barrel 79 and device body 72 and first embodiment form a component accommodating chamber 80 similarly between them.This component accommodating chamber 80 has an alignment mechanism, and it has a charging conduit 81, one gate (not shown)s, is discharged into discharging path (not shown) in order to the chip elements alignment is reached by gate.Being blocked in the pawl 79a that chip elements in the gate can be formed on the going barrel 79 takes out.The chip elements P that is discharged into the discharging path is fed on the blade 84, and this point will be narrated afterwards.

Going barrel 79 is with respect to 72 rotations of device body.Just in case a component P of chip is blocked in the slipper of going barrel 79, is applied on the described chip with regard to having a too big power, thereby chip elements P is broken.On the other hand, the eddy current retarder 75 that is arranged on from feed bar 70 to going barrel 79 the transfer path is carried out the torque limitation functions to avoid the rotational force of going barrel 9, and like this, breaking of chip elements P must be to prevent.

As shown in figure 11, there is one 82 to be fixed on the device body 72.Described going barrel 79 is supported on the axle 82 by a free-wheel clutch 83.83 of this free-wheel clutchs allow going barrel 79 to rotate in the counterclockwise direction.Correspondingly, when the bar A of peace frame device is pushed and when feed bar 70 is descended, going barrel 79 is because the effect of eddy current retarder 75 and rotating in a counter-clockwise direction together.On the other hand, when feed bar 70 raise, free-wheel clutch 83 prevented going barrel 79 rotations.As a result, 79 rotations in the clockwise direction off and on of going barrel.

In addition, eddy current retarder 75 not only produces the resistance to going barrel 79, but also feed bar 70 is had a resistance as antagonistic force.Specifically, when feed bar 70 moved down, going barrel 79 rotated together.Therefore, there is not resistance to be added on the feed bar 70 basically.On the other hand, when feed bar 70 moved up, going barrel was prevented from doing right-hand revolution, like this, had just applied a resistance that prevents that feed bar 70 from moving up.The power that feed bar 70 is moved up is produced by spring 71.Like this, the power of energizing of spring 71 is just suppressed by eddy current retarder 75, so that feed bar 70 rises with low speed.

One arm of crank throw 74 and the interconnection of the lower end of feed bar 70, but and blade 84 interconnection of its other end and parallel motion.So vertical the moving around of feed bar 70 converted the moving back and forth of level of blade 84 to.As mentioned above, because the effect of eddy current retarder 75 and free-wheel clutch 83 is supplied with bar 70 at high speeds and is risen and descend with low speed.Correspondingly, blade 84 at high speeds move backward and move forward with low speed.Therefore, similar with the blade 5 among first embodiment, described blade 84 utilizes friction drag, can forward the chip elements P of putting thereon safely.

The work of the feed arrangement of the foregoing description will be described in conjunction with Figure 10,12 and 13.

Figure 10 shows the state of the feed arrangement when erector bar A is in first dead center.Under this state, feed bar 70 is in uppermost position, so the blade 84 by crank throw 74 and feed bar 70 interconnection is positions up front.

Figure 12 shows as the bar A of erector and begins to descend, and reaches the situation at minimum dead point basically.With the bar A synchronised of erector, feed bar 70 is lowered by, and does the anticlockwise direction rotation owing to the effect of eddy current retarder 75 makes going barrel 79.Specifically, be equipped with thereon and produce a relative velocity between the yoke 76 of magnet 77 and the conductor plate 78 so that produced eddy current, produce one and make conductor plate 78 make the propulsive effort of left-hand revolution with yoke 76 rotations.Simultaneously, by crank throw 74, feed bar 70 retreats blade 84 at high speeds, skids thereby produce one between chip elements P and blade 84, therefore, has only blade 84 to retreat and chip elements P keeps motionless.

Conductor plate 78 is done the anticlockwise direction rotation, and this rotates going barrel 79 together.The one pawl 79a that is formed on the going barrel 79 has removed the obstruction of chip elements P in gate, and chip elements P is alignd so that discharging in component accommodating chamber 80.If a chip elements P who is stuck between pawl 79a and another parts is blocked state by big application force releasing, then element portion P may rupture.Yet eddy current retarder 75 has such function: to a torque that is higher than a predetermined value, the torque of a part can be removed.In other words, eddy current retarder 75 has such function, and it can allow between yoke 76 and the conductor plate 78 relative motion is arranged, so breaking of chip elements can prevent.

The bar A that Figure 13 shows peace frame device begins the situation when lower dead point rises.Because the elastic energy of spring 71, feed bar 70 rises.When feed bar 70 rose, blade 84 advanced by crank throw 74.At this moment, because the effect of eddy current retarder 75, the ascending velocity of feed bar 70 is suppressed, and the speed of advance of blade 84 also is suppressed, because the clockwise rotation of going barrel 79 is regulated by unidirectional power-transfer clutch 83.That is, by making blade 84 ease ahead, because the friction force one chip elements P of blade 84 makes the as a whole pitch that is moved.When chip elements P was sent to top position, the component at top was inhaled by the attraction mouth B of chip erector and is removed.

Figure 14-17 shows the 4th embodiment of feed arrangement of the present invention.This embodiment is the example that the embodiment to Figure 10-13 changes to some extent.Wherein among two embodiment similarly or common means represent with identical numbering, and avoid being repeated in this description.

In the figure of Figure 10-13, can do to be provided with yoke 76 on the linearly moving feed bar 70 in vertical direction.There is a magnet 77 to be added on the yoke 76.In this embodiment, yoke 76 (magnet 77) is linearly moving, and conductor plate 78 (going barrel 79) rotates.The relative area of yoke 76 and conductor plate 78 changes, and it depends on the position of feed bar 70.For this reason, the loss of the propulsive effort that produced of eddy current retarder 75 is big.The rotational force that therefore might propulsive effort can not be sent to going barrel 79 effectively.

Therefore, in the 4th embodiment, there is a fan-shaped revolving meber 90 to can be rotated to support on the center shaft 82 of going barrel 79.Having formed a slotted hole 91 in radially extension comes out with the outer peripheral edges projection from revolving meber 90.One is formed on the side of feed bar 70 and outstanding pin 93 is meshed with slotted hole 92 from the side of feed bar 70, thereby the vertical shifting of feed bar 70 is converted to the gyroscopic movement of revolving meber 90.There is an eddy current retarder (power transmission) 94 to be arranged between revolving meber 90 and the going barrel 79.Specifically, described eddy current retarder 94 comprises an arc yoke 95, it is formed on the outer peripheral edges of revolving meber 90, a plurality of magnet 96 form one and are installed on the medial surface of yoke 95 arcly, a circle, non-magnetic conductor plate 78 be connected going barrel 79 outer peripheral edges and removable pass through one all magnet 96 and and all magnet 96 opposed yokes 95 between the gap.Yoke 95 can be only in the part setting of the outer peripheral edges of revolving meber 90.Whole revolving meber 90 can be made by magnetic material.In addition, between going barrel 79 and center shaft 82, a free-wheel clutch 83 is arranged, it only allows going barrel 79 to rotate (being in the counterclockwise direction) on the direction of arrow in Figure 14.

The service condition of the 4th embodiment will be narrated in conjunction with Figure 14,16 and 17.

Figure 14 shows the feed arrangement situation that is in first dead center as the bar A of erector.In addition, feed bar is in uppermost position.Because feed bar 70 is in uppermost position, be in top position by crank throw 74 and the interconnective blade 84 of feed bar.

In Figure 16, show the situation of the feed arrangement when the bar A of erector begins to descend and reaches lower dead point.Synchronous with the bar A of peace frame device, feed bar also is lowered by, and is formed on the side surface of feed bar 70 and makes revolving meber 90 do the anticlockwise direction revolution from the outstanding pin 93 in the side of feed bar 70, as shown in figure 16.Because the effect of eddy current retarder 94, going barrel 79 is along with revolving meber 90 is done the anticlockwise direction rotation.Specifically, has generation one relative velocity between all magnet yoke placed on it and the conductor plate 78, make eddy current in conductor plate 78 produce a propulsive effort and make conductor plate 78 do the anticlockwise direction rotation with yoke 95 and by crank throw 74 blade 84 at high speeds are moved backward simultaneously, thus generation one slip of skidding between blade 84 and chip elements P.As a result, have only blade 84 to draw back and chip elements P keeps motionless.

Do anticlockwise direction when rotation when going barrel 79, be arranged on the obstruction that pawl 79a on the going barrel 79 has removed the chip elements P among the gate.At this moment, an excessive big load may be added on the chip elements P.Eddy current retarder 94 has the function of torque limitation, even when a torque that is higher than predetermined value was added on the chip elements, the fracture of chip elements P still can prevent.

Figure 17 shows the situation when the bar A of peace frame device feed arrangement when lower dead point rises.Feed bar 70 is risen owing to the elastic energy of spring 71.When feed bar 71 rose, revolving meber 90 was done the clockwise direction revolution, and blade 84 marches forward by crank throw 74.At this moment, begin do right-hand revolution by eddy current retarder 94 to the going barrel 79 that it transmits torque from revolving meber 90.Yet the clockwise rotation of going barrel 79 is regulated by unidirectional power-transfer clutch 83.For this reason, by the effect of eddy current retarder 94, the clockwise revolution of revolving meber 90 is braked, thereby the ascending velocity of feed bar 70 is suppressed.In addition, the speed of advance of blade 84 is suppressed, that is, by with low speed blade 84 being moved forward, chip elements P does as a wholely can move forward a pitch, and this is that the effect of the friction force of blade 84 causes.

In this embodiment, revolving meber 90 and going barrel 79 are installed coaxially, so that the service direction of yoke 95 and conductor plate 78 is in full accord.So the area of the conductor plate that magnetic flow passed through that magnet 96 produces is a unmodified, thereby makes the propulsive effort that is produced by eddy current retarder can be used for the rotation of going barrel effectively.Correspondingly, when feed bar 70 at high speeds turned round, going barrel 79 can produce a stable torque.Advancing at a slow speed and retreating at a high speed of this outer leafs 84 can be controlled highly stablely.

Figure 18 shows the 5th embodiment of feed arrangement of the present invention.This embodiment is the example of the embodiment of change to some extent of the embodiment of Figure 14 to 17.

In the 4th embodiment, the input load of the bar A of erector is sent to revolving meber 90 by feed bar 70.In the 5th embodiment, by combining of feed bar and revolving meber, revolving meber 90 can be directly bar A by erector turn round.For this purpose, on the outer peripheral edges of revolving meber 90, be provided with a contacted contact part 97 of bar A with peace frame device.In addition, in revolving meber 90, be provided with a protrusion 98 that has at the slotted hole that radially extends.Be provided with a pin 74a on an end of crank throw 74, this pin is meshed with slotted hole 98a.

In this embodiment, the decreased number of parts, device size can subtract lessly.

Figure 19-22 shows the 6th embodiment of feed arrangement of the present invention.

In this embodiment, feed arrangement comprises feed bar 70, going barrel 79, free-wheel clutch 83, one eddy current retarders 100 etc.Feed bar 70, spring 71, crank throw 74, blade 84, going barrel 79, free-wheel clutch 83 grades identical with shown in Figure 10-13.Similar parts among two embodiment all represent with identical numbering, and repeated description no longer.

Described eddy current retarder 100 comprises the yoke 101 of a circle, it have the inside face that is installed in it on all magnet 102 and one be arranged in dish type non-magnetic conductor plate 103 in the gap of yoke 101, the circumferential direction is installed, is arranged to all magnet 102.Yoke 101 is installed on the S. A. 104 by a free-wheel clutch 105, and can only be as making right-hand revolution as shown in Figure 19.Conductor plate 103 is installed coaxially with yoke 101, and can be at clockwise and anti-clockwise rotation.

One elastic belt 106 is arranged on the circumference of yoke 101 and with the outer peripheral edges of going barrel 79 and contacts.In this embodiment, used is the circular belt with circular section.Shape can be chosen wantonly, for example also can be the square-section.Under the effect of the friction force of elastic belt, going barrel 79 is passed in the rotation of yoke 101, makes going barrel 79 rotations.

Conductor plate 103 is connected to a connecting rod 108 by a pin 107.Described connecting rod 108 is by a crank throw 109 and feed bar 70 interconnection.Correspondingly, the perpendicular movement of feed bar 70 is converted into the gyroscopic movement of the conductor plate 103 on axle 104.

To narrate in conjunction with Figure 19,21 and 22 service condition of the embodiment of above-mentioned feed arrangement below.

Figure 19 shows the situation of the feed arrangement when the bar A of erector is in first dead center.Feed bar 70 is also in uppermost position.Because feed bar is in uppermost position, the blade 84 that is connected to feed bar 70 by crank throw is in top position.

Figure 21 shows the situation that is lowered by and reaches basically the feed arrangement of lower dead point as the bar A of peace frame device.Synchronous with the bar A of erector, feed bar 70 also is lowered by.Conductor plate 103 is connected to feed bar 70 by crank throw 109, and connecting rod 108 turns round in the clockwise direction and rotates.At this moment, because the effect of eddy current retarder 100, yoke transfer body 11 is along with conductor plate 103 is made right-hand revolution together.Specifically, produce a relative velocity having between magnet 102 yoke 101 mounted thereto and the conductor plate 103, thereby produce an eddy current on conductor plate, this has produced a propulsive effort that makes yoke 101 and conductor plate 103 make clickwise.Meanwhile, blade 84 moves backward by crank throw 74 at high speeds, slides thereby produce between blade 84 and chip elements P.Have only blade 84 to move backward and chip elements P to remain on original position motionless.

When the yoke clockwise direction rotated, going barrel 79 was because the friction force of elastic belt 106 and along with yoke is done the anticlockwise direction rotation.As a result, if chip elements P blocks at gate, then pawl 79a will remove its obstruction.At this moment, an excessive big load may be added on the chip elements P, yet because eddy current retarder 100 has the function of torque-limiting, the cracked of chip elements P can be prevented.

Figure 22 shows the situation that begins the feed arrangement when lower dead point rises as the bar A of erector.Because the elastic energy feed bar 70 of spring 71 is raised.When feed bar 70 is raised, links the conductor plate 103 of feed bar 71 by crank throw 109 and connecting rod 108 and do anti-clockwise revolution and rotation, as shown in figure 22.Correspondingly, because the effect of eddy current retarder 100, yoke 101 will be done the anti-clockwise rotation.Yet this anti-clockwise rotation will be prevented by unidirectional power-transfer clutch 105, so going barrel 79 does not rotate.

Because the rotation of the anti-clockwise of yoke 101 is stoped by unidirectional power-transfer clutch, the anti-clockwise rotation of conductor plate 103 is prevented by eddy current retarder 100.When feed bar 70 was raised, blade 84 advanced by crank throw 74.Yet the ascending velocity of feed bar 70 is owing to the rotational resistance of conductor plate 103 is suppressed, and the speed of advance of blade 84 also is suppressed.Promptly by moving forward blade 84 at a slow speed, entire chip component P is because the friction force of blade 84 and moved forward a pitch.

In this embodiment, the conductor plate 103 of yoke 101 and composition eddy current retarder 100 is provided with coaxially, so the area that magnetic flow passes through is constant, and eddy current retarder 100 can send a stable propulsive effort.Yoke 101 and conductor plate 103 are all circular, and radius of turn is all less, so effect of inertia reduces greatly.Therefore vibrations during adverse influence such as high-speed cruising etc. can be inhibited.In addition, yoke 101 and conductor plate 103 can be rotatably set on the axle 104 that separates with going barrel 79, so the position of yoke and conductor plate 103 can be chosen wantonly.The alerting ability of layout is enhanced.The height of feed arrangement can reduce.

Figure 23 shows the 7th embodiment of feed arrangement of the present invention.This enforcement is an example that changes to some extent to the embodiment of Figure 19-22.

In the 6th embodiment, elastic belt 106 is arranged on the outer peripheral edges of yoke 101, because the friction force of belt 106, going barrel 79 can be with yoke 101 rotations.In the 7th embodiment, gear 101a and 79a are arranged on the outer peripheral edges of yoke 101 and going barrel 79, and they mesh each other.

In this embodiment, gear 101a and 79a are interlocked with one another, can stably rotate.

What should be noted that is that the present invention is not limited to above-described several embodiment.

In the above-described embodiments, blade is used as the device that the chip elements P that unloads down from the discharging path is sent to extracting position.But also can adopt endless belt.In the case, the driving that drives this belt pulley can be rotated by ratch mechanism off and on by belt wheel, uses feed bar or the like.

In addition, in order to remove the obstruction of chip component in gate, what revolving part was used is the pawl of going barrel.But also can use rotating blade, disclose as described in 11-71018 number as the uncensored patent application of Japan.In this case, just do not need to use going barrel.

As switching mechanism, in first and second embodiment, used the friction belt wheel.Used eddy current retarder at the 3rd to the 7th embodiment, but right and wrong can not with friction belt wheel and eddy current retarder.One transmits power and has the device of a torque limitation function also can use.

As mentioned above, feed arrangement of the present invention comprises a feed bar, and it moves around corresponding to a load input work that comes from chip mounter, and comprises that next reciprocal (back and forth) of feed bar moved of a switching mechanism converts rotatablely moving of revolving part to.Therefore the drive source that rotates revolving part can not need.Thereby structure can be simplified.In addition, can also realize that the absorption of chip component and the rotation of taking-up and going barrel carry out synchronously.

In addition, described switching mechanism has a torque limitation function, by this function, when the rotational resistance of revolving part is higher than a predetermined value, can produce a slip of skidding.Even the chip elements in being blocked in gate is when being stuck among the revolving part, and the rotational force of revolving part also can be kept away, and prevented that an excessive big load is added on the chip elements, thereby had advantageously stoped the fracture of chip elements.

Claims (10)

1. chip elements feed arrangement, it has the component accommodating chamber that holds many chip elements, one will be aligned to the align to path of delegation with discharging at the chip elements in the chip elements accommodating chamber, and one solves the revolving part that chip elements blocks in align to path

It comprises a feed bar, and this feed bar can move around linearly or turns round corresponding to the load input that comes from a chip mounter, and

One switching mechanism in order to converting the mobile of feed bar to revolving part rotatablely move, and when the rotational resistance of revolving part is higher than a predetermined value, has the torque limitation function of the rotational force of avoiding revolving part.

2. the feed arrangement of chip elements as claimed in claim 1, it is characterized in that, described align to path comprises that one is formed on the charging conduit on the inner peripheral of component accommodating chamber, and it can make chip elements align on a predetermined direction and make chip elements to downslide

One is formed on the gate of the lower end of charging conduit, its allow chip elements with a predetermined attitude along charging conduit to gliding with one by one by gate, and

One discharging path, in order to will be chip elements by gate be aligned to the usefulness of a row for discharging.

3. the feed arrangement of chip elements as claimed in claim 1 or 2, it is characterized in that, revolving part is a claw, it is arranged on the inwall of going barrel of a sidewall that constitutes the component accommodating chamber, it can rotate along the inner peripheral of component accommodating chamber, and is suitable for providing energy with unblocking with the direction opposite with discharge direction to the component that stops in the gate with unusual attitude.

4. the feed arrangement of chip elements as claimed in claim 1 is characterized in that, described switching mechanism comprises:

One supports the axle of feed bar pivotally,

One is installed on the drive pulley on the axle,

One is installed on the driven pulley on the revolving part,

One be arranged on feed bar the axle and drive pulley between and the free-wheel clutch between revolving part and the driven pulley, and

One is provided with and around the belt between drive pulley and the driven pulley, when the torque greater than a predetermined value is added on drive pulley or the driven pulley, and slipping of the belt.

5. the feed arrangement of chip elements as claimed in claim 1 is characterized in that, described switching mechanism comprises:

One power transmission, it is arranged between feed bar and the revolving part and utilizes an eddy current retarder, and

One free-wheel clutch, it only allows revolving part to rotate in one direction.

6. the feed arrangement of chip elements as claimed in claim 1 is characterized in that, described switching mechanism comprises:

One with feed bar interconnection and with the revolving meber of the coaxial setting of revolving part;

One power transmission, it is arranged between described revolving meber and the revolving part and utilizes an eddy current retarder, and

One free-wheel clutch, it only allows described revolving part to rotate in one direction.

7. the feed arrangement of chip elements as claimed in claim 1 is characterized in that, described switching mechanism comprises:

One first revolving meber, it and feed bar interconnect, and can turn round by the operation of feed bar;

One second revolving meber, it and first revolving meber are provided with coaxially and can turn round and transmit a power corresponding to the motion of first revolving meber and give described revolving part,

One power transmission, it is arranged between first and second revolving meber and utilizes an eddy current retarder, and

One free-wheel clutch, it only allows revolving part to rotate in one direction.

8. the feed arrangement of chip elements as claimed in claim 5 is characterized in that, utilizes the power transmission of eddy current retarder to comprise:

One non-magnetic conductor, it is arranged on one of feed bar and revolving part,

One yoke, it is arranged on another of feed bar and revolving part, and forms a magnetic circuit, and

One is contained in the magnet on the described yoke, and its magnetic flow vertically acts on the non-magnetic conductor.

9. the feed arrangement of chip elements as claimed in claim 6 is characterized in that, utilizes the power transmission of eddy current retarder to comprise:

One non-magnetic conductor, it is arranged on the revolving part,

One yoke, it is arranged on the revolving meber, and forms a magnetic circuit, and

One is contained in the magnet on the described yoke, and its magnetic flow vertically acts on the non-magnetic conductor.

10. the feed arrangement of chip elements as claimed in claim 7 is characterized in that, utilizes the power transmission of eddy current retarder to comprise:

One non-magnetic conductor, it is arranged on first revolving meber,

One yoke, it is arranged on second revolving meber, and forms a magnetic circuit, and

One is contained in the magnet on the described yoke, and its magnetic flow vertically acts on the non-magnetic conductor.

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