Cut the pin bending mechanism
Technical field
What the utility model related to a kind of electronic component inserter cuts the pin bending mechanism.
Background technology
Pcb board is important electron parts in the electronic product, is the supporter of electronic devices and components.And inserter be a kind of replacement artificial plug-in unit and with various electronic components like resistance, plug the machine of relevant position on the pcb board.On inserter, can be provided with one and be used for pruning electronic component pin, and these pin bendings are cut the pin bending mechanism.Through cutting the processing of pin bending mechanism, being cut out short pin and will collude on pcb board and can not come off of electronic component, during the last tin operation of Yu Zaihou just tightly by weldering.
Current general cut the principle that the pin bending mechanism adopts cylinder to promote to cut the pin push broach usually and realize.Even but the electronic component as processing object is still too big relatively for minimum its volume of cylinder of volume, also need extra high-pressure air source as power, cause very inconvenience of installation and maintenance.And the operating frequency of cutting the pin bending mechanism is very high, and can not meet the demands the service life of cylinder usually.
The utility model content
The utility model provides that a kind of head volume is little, in light weight, compact conformation cut the pin bending mechanism.
For achieving the above object, the utility model is taked following technical scheme:
Cut the pin bending mechanism, comprise frame, cut pin bender head and head lifting power plant, the said pin bender head of cutting comprises and cuts pin device body, cuts the pin tool bore cutting to be provided with on the pin device body, cuts the pin push broach cutting other being equipped with of pin tool bore; Cutting the pin tool bore also communicates with waste conduits; Especially, also comprise slide and active push rod; Slide is installed on the frame, and the free degree of slide vertical direction is restrained; Initiatively push rod is connected with the position of doing elevating movement of head lifting power plant; Also be provided with one and can switch to second drive state, be used to change and cut between pin device body and the slide block and cut pin device body and the transmission switching mechanism of drive connection between the push broach initiatively from first drive state; Said first drive state is: cut pin device body and slide relative motion but cut pin device body with active push rod relative fixed; Said second drive state is: cut pin device body and initiatively push rod relative motion but cut pin device body and slide relative fixed; Said active push rod and saidly cut the pin push broach and carry out transmission.
The utility model was divided into for 4 steps to the process of electronic component pin:
1) cuts pin device body and rise, make the pin tool bore of cutting on it be placed on the electronic component pin;
2) cut pin device body and stop, cutting the pin push broach and stretch out, cut out short pin and bending pin;
3) cut pin push broach withdrawal;
4) cut pin device body and drop to original position.
Below the utility model is realized that the principle of above-mentioned process describes:
Before the work, slide is installed on the frame of cutting the pin bending mechanism, and the free degree of the vertical direction of slide is restrained; Initiatively push rod is connected with the parts that can carry out elevating movement; The active push rod is in the extreme lower position of relative frame liftable scope when just beginning, and the transmission switching mechanism is in first drive state.
During beginning, initiatively push rod is boosted, because the transmission switching mechanism is in first drive state, will be boosted with the active push rod so cut pin device body, and slide rises relatively, implements above-mentioned process 1) content;
After cutting pin device body and rising to a certain position; The action of transmission switching mechanism; Switch to second drive state, cut pin device body this moment and stop to rise, and initiatively push rod continues to rise; And initiatively the push rod process that continues to rise can drive through linkage and cut the pin push broach and stretch out, and implements above-mentioned process 2) content;
Accomplish above-mentioned process 2) content after; Initiatively push rod arrives the extreme higher position of relative frame liftable scope; Then initiatively push rod is left behind, and switches in no show before the position of drive state, and the transmission switching mechanism keeps second drive state; So initiatively the decline process of push broach only can drive through linkage and cut pin push broach withdrawal, implements above-mentioned process 3) content;
Initiatively push broach is pulled on down; After arriving the position of switching drive state, the action of transmission switching mechanism switches to first drive state; Cutting pin device body this moment will be left behind with the active push rod; Relatively slide descends, and implements above-mentioned process 4) content, get back to initial position until the active push rod.
So far, the utility model has realized once cutting pin bending process.
Said active push rod and saidly cut the pin push broach and preferably carry out transmission through linkage.The transmission efficiency of linkage is high, and can satisfy the durability requirement of High-speed machining.And in linkage, the length of at least one connecting rod is preferably adjustable.Like this, the adjustment that can realize cutting pin push broach outreach through the length of regulating this connecting rod, thus realize the adjustment of electronic component pin bending angle.
Above-described transmission switching mechanism, can adopt following technical scheme to realize: cut pin device body and be arranged between slide and the active push rod, the three is close together; Be provided with a through hole on the pin device body cutting, in through hole, be provided with the ball that a diameter is slightly less than the through hole internal diameter as ball channel; On the active push rod, be provided with first pit, on slide, be provided with second pit, first pit and second pit can be respectively with said through hole over against, the length sum of the height of single pit and through hole is slightly larger than the diameter of ball; Cut pin device body and initiatively also be provided with first spacing cooperation that is used to limit these both relative lifting positions between the push rod; Also be provided with second spacing cooperation that is used to limit these both relative lifting positions cutting between pin device body and the slide; And the first spacing cooperation place is when the active push rod is cut pin device body relatively and fallen most state, first pit and through hole over against; The second spacing cooperation place when cutting the relative slide of pin device body and rise most state, second pit and through hole over against.
The above-described first spacing cooperation and the second spacing cooperation can be the cooperations of elongated slot and projection.
Originally cut the pin bending mechanism, its quantity of cutting the pin bender head is preferably two covers, also comprise rack-mounted line slideway auxiliary with about revolve feed screw nut pair; Line slideway auxiliary is provided with first slide block and second slide block; About revolve feed screw nut pair and be provided with first nut and second nut; The direction of action of line slideway auxiliary with about revolve feed screw nut pair axis direction all and horizontal direction parallel; One cover is cut its slide of pin bender head and is connected to first slide block and first nut simultaneously, and another set of its slide of pin bender head of cutting is connected to second slide block and second nut simultaneously.
About revolve on the feed screw nut pair; The thread rotary orientation of first nut and second nut is opposite, revolves the screw mandrel of feed screw nut pair about rotation, can make two covers cut that the pin bender head separates simultaneously and near; Realize keeping two heads to cut the constant purpose of center position of distance between the pin tool bore; Thereby when making the electronic component that plug-in unit varies in size, all can locate, simplify the computational process of card address according to the central point that electronic component answers slot to put.Line slideway auxiliary then can guarantee to cut the motion in the horizontal direction all the time of pin bender head.For ease of install connecting, the slide block that the slide of cutting the pin bender head can be connected to line slideway auxiliary simultaneously through connecting plate with about revolve the nut of feed screw nut pair.
As improvement, have the mechanism that two covers are cut the pin bender head, two initiatively push rod is preferably secondary with the position formation horizontal slip of doing elevating movement of head lifting power plant respectively.Like this, two initiatively push rods can be respectively relatively this position of doing elevating movement move horizontally.This scheme makes two covers cut distance between the pin bender head when changing, and two initiatively push rods and this position of doing elevating movement still can keep drive connection.
Originally cut the pin bending mechanism, described head lifting power plant preferably is made up of motor, cam and up-down drive link; The driven by motor cam rotates, and cam driven up-down drive link is done elevating movement; The up-down drive link carries out transmission in vertical direction with the active push rod of cutting the pin bender head.Such head lifting power plant adopts motor as power, adopts transmission and the control assembly of cam as active push rod motion process.Have the additional configuration of avoiding high-pressure air source, reduce advantages such as manufacturing cost and maintenance cost.
The utlity model has that volume is little, compact conformation, stablize durable, be easy to advantages such as adjustment and maintenance.
Description of drawings
Fig. 1 is the front view of embodiment;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the stereogram one of embodiment;
Fig. 4 is the stereogram two of embodiment;
Fig. 5 is the stereogram that the pin bender head is cut on an embodiment left side;
Fig. 6 is that the B-B of Fig. 5 is to cutaway view;
Fig. 7 is the D point enlarged drawing of Fig. 6;
Fig. 8 is the explosive view of Fig. 5;
Fig. 9 is that the C-C of Fig. 5 is to cutaway view;
Figure 10 is the movement state diagram one that the pin bender head is cut on a left side;
Figure 11 is the movement state diagram two that the pin bender head is cut on a left side;
Figure 12 is the movement state diagram three that the pin bender head is cut on a left side;
Figure 13 is that the A-A of Fig. 2 is to cutaway view.
Description of reference numerals: 1-frame; 2-head lifting power plant; 3-cuts on a left side pin bender head; 4-cuts on the right side pin bender head; The 5-line slideway auxiliary; Revolve feed screw nut pair about 6-; The 7-slide; 8-cuts pin device main body; 9-is push rod initiatively; The 10-briquetting; The 11-waste conduits; The 12-first connecting rod; The 13-second connecting rod; The 14-third connecting rod; A 15-left side first connecting plate; A 16-left side second connecting plate; 17-first slide block; 18-first nut; 19-cuts the pin tool bore; 20-cuts the pin push broach; 21-cuts the pin broach shell; The 22-regulating block; The 23-through hole; The 24-ball; 25-first shrinkage pool; 26-second shrinkage pool; 27-first projection; 28-second projection; 29-first elongated slot; 30-second elongated slot; Right first connecting plate of 31-; Right second connecting plate of 32-; 33-second slide block; 34-second nut; The 35-motor; The 36-cam; 37-up-down drive link; 38-vertical rod portion; 39-horizon bar portion.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model content is described further.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, present embodiment cut the pin bending mechanism, comprise frame 1, head lifting power plant 2, a left side cut pin bender head 3, the right side cut pin bender head 4, line slideway auxiliary 5 and about revolve feed screw nut pair 6.The shape that shape and the structure and right that pin bender head 3 is cut on a left side cut pin bender head 4 is symmetrical with axis of no-feathering, and also axial symmetry of both installation sites.
The structure of below only pin bender head 3 is cut on a left side describes: like Fig. 5 to shown in Figure 9; A left side cuts that pin bender head 3 comprises slide 7, cuts pin device body 8, initiatively push rod 9, briquetting 10, waste conduits 11, first connecting rod 12, second connecting rod 13, third connecting rod 14 and transmission switching mechanism, wherein:
A) like Fig. 3, shown in Figure 4, line slideway auxiliary 5 with about revolve feed screw nut pair 6 and be installed on the frame 1, the direction of action of line slideway auxiliary 5 with about revolve feed screw nut pair 6 axis direction all and horizontal direction parallel.Slide 7 through left first connecting plate 15 with left second connecting plate 16 and simultaneously with first slide block 17 of line slideway auxiliary 5 with about revolve feed screw nut pair 6 first nut 18 be connected; Installation between realization and the frame 1, the free degree of slide 7 vertical direction is therefore restrained.Like Fig. 5, Fig. 6, shown in Figure 8, cut pin device body 8 and be arranged between slide 7 and the active push rod 9, the three is close together, and briquetting 10 is fixed on the slide 7, to cutting 9 position-limiting actions of pin device body 8 and active push rod.So cut pin device body 8 only relatively slide 7 make movement in vertical direction, initiatively push rod 9 also only can be cut pin device body 8 relatively and make movement in vertical direction.
B) as shown in Figure 7, be provided with at the top of cutting pin device body 8 and cut pin tool bore 19, be provided with on the next door of cutting pin tool bore 19 and cut pin push broach 20.The pin push broach 20 of cutting of present embodiment is installed in and cuts in the pin broach shell 21, by cutting pin broach shell 21 it is led.Cut pin push broach 20 and cut pin tool bore 19 and cooperate and to realize cutting the pin function.And after cutting pin and accomplishing, cut pin push broach 20 when continuing to stretch out a segment distance, can realize function the pin bending.It is long more to cut the distance that pin push broach 20 stretches out, and pin is big more by angle bending.
C) as shown in Figure 7, waste conduits 11 is fixed on cuts on the pin device body 8, cuts pin tool bore 19 and communicates with waste conduits 11.Waste conduits 11 is used for the pin of being cut is transported to appointed positions.
D) as shown in Figure 7; One end of first connecting rod 12 is with initiatively push rod 9 is hinged; One end of the other end of first connecting rod 12 and second connecting rod 13 is hinged; The other end of second connecting rod 13 is with to cut pin device body 8 hinged, and an end of third connecting rod 14 is hinged to the middle part of second connecting rod 13, and the other end of third connecting rod 14 is with to cut pin push broach 20 hinged.First connecting rod 12, second connecting rod 13 and third connecting rod 14 have constituted active push rod 9 to the linkage of cutting pin push broach 20 transmissions.In the present embodiment, the two ends of first connecting rod 12 all are provided with regulating block 22, make the adjustable length of first connecting rod 12.Under the constant situation of active push rod 9 movement travels, change the length of first connecting rod 12, can change the outreach of cutting pin push broach 20.So present embodiment has the function of pin bending angular adjustment.
E) like Fig. 8, shown in Figure 9, be provided with a through hole 23 on the pin device body 8 cutting as ball channel, in through hole 23, be provided with the ball 24 that a diameter is slightly less than the through hole internal diameter; On active push rod 9, be provided with first pit 25, on slide 7, be provided with second pit, 26, the first pits 25 and second pit 26 can be respectively with through hole 23 over against, the length sum of the height of single pit and through hole 23 is slightly larger than the diameter of ball 24.Be provided with first projection 27 and second projection 28 on the pin device body 8 cutting, on active push rod 9, be provided with first elongated slot 29, on slide 7, be provided with second elongated slot 30.First projection 27 cooperates as the first spacing cooperation with first elongated slot 29; Second projection 28 cooperates as the second spacing cooperation with second elongated slot 30.More than constituted the transmission switching mechanism of present embodiment.
Below explanation transmission switching mechanism switches to second drive state from first drive state in once cutting pin bending process; Switch back the operation principle of first drive state again: shown in figure 10; Cut that pin device body 8 relative slides 7 fall to the greatest extent and initiatively push rod 9 cut pin device body 8 relatively and fall when most; Initiatively push rod 9 is in the extreme lower position of relative frame 1 liftable scope, and this moment, ball 24 was in the space between first pit 25 and the through hole 23, cuts pin device body 8 and active push rod 9 relative fixed; Can slide relatively with slide 7 and cut pin device body 8, promptly the transmission switching mechanism is in first drive state.Shown in figure 11; When active push rod 9 moves from bottom to up, until cutting 7 liters of pin device body 8 relative slides to the greatest extent the time, this moment second pit 26 just also with through hole 23 over against; Owing to cut pin device body 8 and under the restriction of the second spacing cooperation, can not up move again; So can push ball 24 to second pit 26 when initiatively push rod 9 continuation are up, make ball 24 be in the space between second pit 26 and the through hole 23, make and cut pin device body 8 and slide 7 relative fixed; But cut pin device body 8 and initiatively push rod 9 relative motions, promptly the transmission switching mechanism is in second drive state.Shown in figure 12, cut 7 liters of pin device body 8 relative slides to the greatest extent and initiatively push rod 9 cut pin device body 8 relatively and also rise to the greatest extent, active this moment push rod 9 is in the extreme higher position of relative frame 1 liftable scope.After this initiatively push rod 9 from top to down motion, the transmission switching mechanism will switch back first drive state from second drive state according to the inverse process of above-mentioned course of action.
Can find out that in once cutting pin bending process, the course of action of cutting pin device body 8 and active push rod 9 is: i) cut pin device body 8 and rise simultaneously with active push rod 9, realize that cutting pin tool bore 19 is placed in the step on the electronic component pin; Ii) cut pin device body 8 and stop, initiatively push rod 9 continues to rise, and realizes cutting pin push broach 20 and stretches out the step of cutting out short pin and bending pin; Iii) cut pin device body 8 and keep halted state, initiatively 9 liters of most backs of push rod descend, and realize cutting the step of pin push broach 20 withdrawals; Iv) cut pin device body 8 and descend simultaneously, realize cutting the step that pin device body 8 drops to original position with active push rod 9.The pin bending process of cutting of electronic component pin was realized on ability ground when therefore the head of present embodiment was worked.
Cut pin bender head 4 for the right side, like Fig. 3, shown in Figure 4, its slide be through right first connecting plate 31 with right second connecting plate 32 and simultaneously with second slide block 33 of line slideway auxiliary 5 with about revolve feed screw nut pair 6 second nut 34 be connected.When about revolve feed screw nut pair 6 screw mandrel when rotating; A left side cut pin bender head 3 and the right side cut pin bender head 4 can be simultaneously in the same way or counter motion simultaneously; And a left side cut pin bender head 3 left/distance of right motion equal the right side cut pin bender head 4 to the right/distance of left movement; It is constant that promptly two heads are cut the center position of distance between the pin tool bore, so present embodiment is when the electronic component that plug-in unit varies in size, and the central point of answering slot to put according to electronic component comes the positioning instant can.About revolve feed screw nut pair 6 screw mandrel can drive by servomotor so that the distance of cutting on two heads between the pin tool bore can be by adjustment promptly, current by the distance of plug-in unit electronic component pin to adapt to.
Shown in figure 13, the head lifting power plant 2 of present embodiment is made up of motor 35, cam 36 and up-down drive link 37.Motor 35 drives cam 36 and rotates, and cam 36 drives up-down drive link 37 and does elevating movement.Wherein, Up-down drive link 37 as head lifting power plant elevating movement position is made up of vertical rod portion 38 and horizon bar portion 39; To constitute horizontal slips secondary with horizon bar portion 39 respectively for the active push rod that pin bender head 3 is cut on a left side and the right active push rod of cutting pin bender head 4, can be respectively relatively horizon bar portion 39 move horizontally and do not influence the transmission of vertical direction.Pin bender head 3 is cut on a left side and the distance between the pin bender head 4 is cut on the right side even therefore adjust, and the drive connection between two active push rods and the up-down drive link still can not change.