Safety-protecting type plug-in head mechanism
Technical field
The present invention relates to electronic component plug-in component equipment technical field, refer in particular to a kind of safety-protecting type plug-in head mechanism.
Background technology
Along with developing rapidly of electronics industry, the application of electronics process equipment is more and more extensive, and mechanical clamp head is device very conventional in electronics process equipment, electronics process equipment is mainly used in gripping electronic component, and transported and be installed to circuit board, but existing electronics process equipment is due to complex structure, control difficulty high and cause tooling cost higher.
For reducing production and the processing cost of equipment, the head drive mechanism of general existing electronic component inserter adopts air pressure to drive, by utilizing air pressure to drive the lower slotting action that realizes head mechanism with retract action of stretching out of air cylinder driven bar.But in actual production process, because the movement in the horizontal direction of the workbench of inserter is mainly controlled by servo motor, and the movement of head mechanism in the vertical direction is controlled by pneumatic supply, both control does not have relevance, when the air pressure of pneumatic supply is not enough or die suddenly, the head mechanism of inserter declines under the effect of self gravitation, the lower end of head mechanism and PCB circuit board or workbench are very close, if now servo motor is still in work, when PCB circuit board and workbench move horizontally, the lower end of head mechanism easily and PCB circuit board or work bump, easily cause the lower end of PCB circuit board or head mechanism to damage, when serious, even cause the lower end of head mechanism or workbench to be scrapped, had a strong impact on the normal production of inserter.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of can protective plug-in unit head mechanism when pneumatic supply air pressure is not enough or die, prevent the safety-protecting type plug-in head mechanism that plug head portion mechanism and workbench or pcb board collide.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: safety-protecting type plug-in head mechanism, comprise frame, the lower plug in drive unit that mechanical paw and driving device paw move up and down, described erecting is equipped with safeguard protection seat, this safeguard protection seat comprises paw Connection Block, spring guide, back-moving spring and be arranged at the spring base of frame, the lower end of spring guide is connected with spring base, described paw Connection Block offers and is flexibly connected hole, spring guide is flexibly connected hole through this, described back-moving spring is set in spring guide, the lower end of back-moving spring and spring base butt, the upper end of back-moving spring and paw Connection Block butt, described lower plug in drive unit is connected with paw Connection Block, and described mechanical paw is connected with paw Connection Block.
Wherein, the left side wall top of described paw Connection Block is provided with lug boss, and described flexible connection hole is opened in this lug boss, the lower surface butt of the upper end of described back-moving spring and lug boss.
Wherein, described lower plug in drive unit comprises the lower interpolated pressure cylinder that is arranged at frame, and the lower slotting drive rod of this lower interpolated pressure cylinder is connected with the top of described paw Connection Block.
Wherein, described erecting is equipped with bearing pedestal, and this bearing sleeve is equipped with bearing, and bearing is equiped with spline housing, is movably installed with hollow splined shaft in this spline housing; Described mechanical paw comprises paw body, be movably set in knuckle joint, gangbar and the clamping of driving device paw of paw body and the material folding drive unit unclamping, this material folding drive unit is arranged at paw Connection Block, the upper end of gangbar is connected with material folding drive unit, knuckle joint offers interlock groove, the lower end of described gangbar is provided with the internal diameter portion that swells, and the portion's activity that swells of this internal diameter is embedded at the bottom of interlock groove; Described gangbar is through hollow splined shaft, and paw body is connected with the lower end of hollow splined shaft, and the upper end of hollow splined shaft is connected with paw Connection Block; Described spline package is provided with drive.
Wherein, the upper end of described hollow splined shaft offers the first annular groove, and the bottom of described paw Connection Block offers the first horizontal cut, and the first annular groove activity is embedded in the first horizontal cut.
Wherein, described material folding drive unit comprises the material folding pressure cylinder that is arranged at paw Connection Block, the material folding drive rod lower end of this material folding pressure cylinder is equiped with connector, the bottom of this connector offers the second horizontal cut, the upper end of described gangbar offers the second annular groove, and the second annular groove activity is embedded in the second horizontal cut.
Wherein, the bottom, cross section of described interlock groove is rounded, and the top, cross section of this interlock groove is rectangular; The described internal diameter portion of swelling is connecting ball head, and this connecting ball head activity is embedded at the bottom of interlock groove.
Wherein, the bottom, cross section of described interlock groove is rectangular, and the top, cross section of this interlock groove is rectangular; The described internal diameter portion of swelling is for connecting coiled hair, and this connections coiled hair activity is embedded at the bottom of the groove that links.
Wherein, the outer wall of described hollow splined shaft offers at least three flat-bottom slots, and at least three flat-bottom slot annulars are distributed in the outer wall of splined shaft; The two side of described flat-bottom slot is all mutually vertical with the bottom surface of flat-bottom slot.
Further, the inwall of described spline housing is provided with at least three protruding embedding keys, and at least three embedding key annulars are distributed in the inwall of spline housing; The cross-sectional sizes of embedding key matches with the cross-sectional sizes of flat-bottom slot; When spline housing and the socket of described splined shaft, an embedding key is embedded in a flat-bottom slot.
Beneficial effect of the present invention is: the invention provides a kind of described safety-protecting type plug-in head mechanism, comprise frame, the lower plug in drive unit that mechanical paw and driving device paw move up and down, described erecting is equipped with safeguard protection seat, this safeguard protection seat comprises paw Connection Block, spring guide, back-moving spring and be arranged at the spring base of frame, the lower end of spring guide is connected with spring base, described paw Connection Block offers and is flexibly connected hole, spring guide is flexibly connected hole through this, described back-moving spring is set in spring guide, the lower end of back-moving spring and spring base butt, the upper end of back-moving spring and paw Connection Block butt, described lower plug in drive unit is connected with paw Connection Block, and described mechanical paw is connected with paw Connection Block.In the plug-in unit course of processing of electronic component, paw Connection Block moves up and down under the effect of lower plug in drive unit, thereby driving mechanical paw is done and risen and lower slotting action; Paw Connection Block and mechanical paw move down while carrying out plug-in unit action, and paw Connection Block moves down and compression reseting spring.When there is pneumatic supply air pressure deficiency or dying, described paw Connection Block moves up under the effect of back-moving spring, thereby drive plug head portion mechanism to return again original position, prevent mechanical paw and workbench or pcb board collision, avoid because of pneumatic supply air pressure deficiency or die causing plug-in component equipment infringement, fail safe is higher, and maintenance cost is low, practical, obviously progressive.
Accompanying drawing explanation
Fig. 1 is the perspective view of the embodiment of the present invention one when practical application.
Fig. 2 is the perspective view of the embodiment of the present invention one.
Fig. 3 is the longitudinal profile structural representation of the embodiment of the present invention one.
Fig. 4 is the perspective view of the safeguard protection seat of the embodiment of the present invention one.
Fig. 5 is the stereochemical structure decomposing schematic representation of gangbar, knuckle joint and the connector of the embodiment of the present invention one.
Fig. 6 is the horizontal section structural representation of the hollow splined shaft of the embodiment of the present invention one.
Fig. 7 is the horizontal section structural representation of the spline housing of the embodiment of the present invention one.
Fig. 8 is the stereochemical structure decomposing schematic representation of gangbar, knuckle joint and the connector of the embodiment of the present invention two.
Embodiment
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, and the content that execution mode is mentioned not is limitation of the invention.
The embodiment mono-of safety-protecting type plug-in head mechanism of the present invention as shown in Figure 1 to Figure 7 shows the, comprise frame, the lower plug in drive unit that mechanical paw 1 and driving device paw 1 move up and down, described erecting is equipped with safeguard protection seat, this safeguard protection seat comprises paw Connection Block 2, spring guide 3, back-moving spring 4 and be arranged at the spring base 5 of frame, the lower end of spring guide 3 is connected with spring base 5, described paw Connection Block 2 offers and is flexibly connected hole, spring guide 3 is flexibly connected hole through this, described back-moving spring 4 is set in spring guide 3, the lower end of back-moving spring 4 and spring base 5 butts, the upper end of back-moving spring 4 and paw Connection Block 2 butts, described lower plug in drive unit is connected with paw Connection Block 2, and described mechanical paw 1 is connected with paw Connection Block 2.In the plug-in unit course of processing of electronic component, paw Connection Block 2 moves up and down under the effect of lower plug in drive unit, thereby driving mechanical paw 1 is done and risen and lower slotting action; Paw Connection Block 2 and mechanical paw 1 move down while carrying out plug-in unit action, and paw Connection Block 2 moves down and compression reseting spring 4.When there is pneumatic supply air pressure deficiency or dying, described paw Connection Block 2 moves up under the effect of back-moving spring 4, thereby drive plug head portion mechanism to return again original position, prevent mechanical paw 1 and workbench or pcb board collision, avoid because of pneumatic supply air pressure deficiency or die causing plug-in component equipment infringement, fail safe is higher, and maintenance cost is low, practical, obviously progressive.
The left side wall top of the described paw Connection Block 2 of the present embodiment is provided with lug boss 6, and described flexible connection hole is opened in this lug boss 6, the lower surface butt of the upper end of described back-moving spring 4 and lug boss 6.Concrete, the right side wall of the left side wall of described paw Connection Block 2 and spring base 5 against.When paw Connection Block 2 is done oscilaltion and is moved, the left side wall of paw Connection Block 2 slides on the right side wall of spring base 5, the bottom that prevents paw Connection Block 2 is rocked and is affected the plug-in unit accuracy of mechanical paw 1, guarantees the high accuracy plug-in unit processing of mechanical paw 1, practical strong.
The described lower plug in drive unit of the present embodiment comprises the lower interpolated pressure cylinder 7 that is arranged at frame, and the lower slotting drive rod 8 of this lower interpolated pressure cylinder 7 is connected with the top of described paw Connection Block 2.Lower interpolated pressure cylinder 7 is lower slotting cylinder, utilizes air pressure to drive to control the stretching out and bounce back of lower slotting drive rod 8 of lower slotting cylinder, and then realizes the driving function of lower plug in drive unit, controls operation simple and convenient, and practicality is stronger.Certainly, described lower interpolated pressure cylinder 7 can also be hydraulic cylinder, utilize hydraulic-driven to control the stretching out and bounce back of lower slotting drive rod 8 of hydraulic cylinder, or, described lower plug in drive unit can also drive moving up and down of paw Connection Block 2 for servomotor mate gear tooth bar, equally also can reach above-mentioned technique effect.
The described erecting of the present embodiment is equipped with bearing pedestal, and this bearing sleeve is equipped with bearing 9, and bearing 9 is equiped with spline housing 10, is movably installed with hollow splined shaft 11 in this spline housing 10; Described mechanical paw 1 comprises paw body 12, be movably set in knuckle joint 13, gangbar 14 and 1 clamping of driving device paw of paw body 12 and the material folding drive unit unclamping, this material folding drive unit is arranged at paw Connection Block 2, the upper end of gangbar 14 is connected with material folding drive unit, knuckle joint 13 offers interlock groove 15, the lower end of described gangbar 14 is provided with the internal diameter portion that swells, and the portion's activity that swells of this internal diameter is embedded at the bottom of interlock groove 15; Described gangbar 14 is through hollow splined shaft 11, and paw body 12 is connected with the lower end of hollow splined shaft 11, and the upper end of hollow splined shaft 11 is connected with paw Connection Block 2; Described spline housing 10 is equiped with drive 28.Concrete, the upper end of described hollow splined shaft 11 offers the first annular groove 16, and the bottom of described paw Connection Block 2 offers the first horizontal cut 17, the first annular groove 16 activities and is embedded in the first horizontal cut 17.
The drive 28 of the present embodiment is connected with servo motor transmission by Timing Belt, and rotate under the driving of servomotor, to drive spline housing 10 and hollow splined shaft 11 to rotate, and then drive paw body 12 to rotate, to realize, the rotational angle of mechanical paw 1 is controlled, improved the plug-in unit precision of electronic component and the crudy of PCB circuit board.When spline housing 10 and 11 rotation of hollow splined shaft, the upper end of hollow splined shaft 11 can first, horizontal cut 17 be interior freely rotates, guaranteeing not affect moving up and down of hollow splined shaft 11 when hollow splined shaft 11 freely rotates, simple in structure, maintain easily, practical.Described gangbar 14 moves up and down under the effect of material folding drive unit, thereby realize the clamping of mechanical paw 1 and unclamp action, when paw body 12 is synchronizeed rotation with hollow splined shaft 11, the lower end of described gangbar 14 can in interlock, groove 15 be interior freely rotates, gangbar 14 is without synchronize rotation with mechanical paw 1, so that mechanical paw 1 rotates neatly, conveniently control, practical.
Further, described material folding drive unit comprises the material folding pressure cylinder 18 that is arranged at paw Connection Block 2, material folding drive rod 29 lower ends of this material folding pressure cylinder 18 are equiped with connector 19, the bottom of this connector 19 offers the second horizontal cut 20, the upper end of described gangbar 14 offers the second annular groove 21, the second annular groove 21 activities and is embedded in the second horizontal cut 20.When paw body 12 is synchronizeed with hollow splined shaft 11 while rotating, the upper end of gangbar 14 can second, horizontal cut 20 be interior freely rotates, and gangbar 14, without synchronizeing and rotate with material folding drive unit, further facilitates mechanical paw 1 and rotates neatly, practical.Concrete, the bottom, cross section of described interlock groove 15 is rounded, and the top, cross section of this interlock groove 15 is rectangular; The described internal diameter portion of swelling is connecting ball head 22, and these connecting ball head 22 activities are embedded at the bottom of interlock groove 15.
The material folding pressure cylinder 18 of the present embodiment is material folding cylinder, utilizes air pressure to drive to control the stretching out and bounce back of material folding drive rod 29 of material folding cylinder, and then realizes the driving function of lower material folding drive unit, and control operation is simple and convenient, and practicality is stronger.Certainly, described material folding pressure cylinder 18 can also be hydraulic cylinder, utilizes hydraulic-driven to control the stretching out and bounce back of material folding drive rod 29 of hydraulic cylinder, or, described material folding drive unit can also drive moving up and down of gangbar 14 for electromagnetic actuator device, equally also can reach above-mentioned technique effect.
The outer wall of the described hollow splined shaft 11 of the present embodiment offers at least three flat-bottom slots 24, and at least three flat-bottom slot 24 annulars are distributed in the outer wall of splined shaft; The two side 25 of described flat-bottom slot 24 is all mutually vertical with the bottom surface 26 of flat-bottom slot 24.Concrete, the inwall of described spline housing 10 is provided with at least three protruding embedding keys 27, and at least three embedding key 27 annulars are distributed in the inwall of spline housing 10; The cross-sectional sizes of embedding key 27 matches with the cross-sectional sizes of flat-bottom slot 24; When spline housing 10 is socketed with described splined shaft, an embedding key 27 is embedded in a flat-bottom slot 24.
Adopt the splined shaft of the technical program in the manufacturing of spline, without special molding cutter, also without the gear machining apparatus of the specialties such as the gear shapping machine by professional or gear-hobbing machine, with conventional complex milling machine tool or with C axle machining center, can carry out the processing and manufacturing of flat-bottom slot 24; Be applicable to numerically controlled automatic and produce, machining accuracy improves greatly, can realize interworking; Its difficulty of processing is identical with the difficulty of processing of flat key groove, thereby greatly reduces the difficulty of processing of described improved spline pair, has reduced the generation manufacturing cost of spline, and economic benefit is high; The use principle of this improved spline pair is the same with traditional spline pair with transmission efficiency, and applicability is high, practical, is easy to apply.The spline housing 10 of the present embodiment can adopt the mode of conventional line cutting to process, and also without the gear shapping machine of special molding cutter or specialty, processes, and operability is high.
Be illustrated in figure 8 the embodiment bis-of safety-protecting type plug-in head mechanism of the present invention, be with the difference of above-described embodiment one: the bottom, cross section of described interlock groove 15 is rectangular, the top, cross section of this interlock groove 15 is rectangular; The described internal diameter portion of swelling is for connecting coiled hair 23, and these connections coiled hair 23 activities are embedded at the bottom of the groove 15 that links.
When connection coiled hair 23 moves up along with gangbar 14, the top that the upper surface of connection coiled hair 23 promotes the interlock groove 15 that width is less, to drive knuckle joint 13 to move up; When connection coiled hair 23 moves down along with gangbar 14, connect the bottom of the bottom promotion interlock groove 15 of coiled hair 23, to drive knuckle joint 13 to move down; Moving up and moving down respectively driving device paw 1 of knuckle joint 13 clamps and unclamps action, connect that coiled hair 23 can groove 15 be interior freely rotates in interlock simultaneously, together with following mechanical paw 11 or knuckle joint 13 without gangbar 14 with described material folding drive unit, rotate, equally also can reach above-mentioned technique effect, obviously progressive.
Above-described embodiment is preferably implementation of the present invention, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.