CN209318800U - A kind of feeding system of lathe - Google Patents

Abstract

The utility model relates to a kind of feeding systems of lathe, belong to metal parts processing technique field, it includes lathe body, the lathe body is rotatably connected to the chuck for fixing gear, and lathe body slidably connects knife rest, is characterized in that: the lathe body is equipped with the feed mechanism for being equipped with multiple gears and drives the reciprocator of feed mechanism sliding；The reciprocator includes that the screw rod being arranged along lathe body width direction, the slide being fixedly connected with feed mechanism and the gag lever post being set on the outside of screw rod, the slide are slidably connected with gag lever post.The utility model proposes the feeding system of lathe a kind of guarantee the precision of workpiece installation site, to avoid the deficiency of artificial loading mode can be realized accurate feeding.

Description

A kind of feeding system of lathe

Technical field

The utility model relates to metal parts processing technique fields, more particularly, to a kind of feeding system of lathe.

Background technique

Lathe is common a kind of equipment in machinery production processing, and main function is carried out with workpiece of the lathe tool to rotation Turnery processing can also install drill bit, reamer, reamer, screw tap, screw die and checkering tool etc. on lathe and be added accordingly Work.

Gear is the mechanical organ with teeth that can continuously engage passing movement and power, application of the gear in transmission on wheel rim Very early there have been.With the development of production, the stationarity of gear operation is taken seriously, and gear needs after being cast into blank Precision processing is carried out to improve the precision of gear to gear using lathe.In casting process, the installation bore dia meeting of gear It is smaller than in actual use, it needs to carry out reaming to gear using lathe so that its mounting hole and transmission shaft paste when gear is installed It closes, guarantees the smoothness of gear in the running.

In the prior art, the small workpieces such as gear, ball are processed, generally carries out high-precision using numerically controlled lathe and adds Single blank workpiece often by the way of manually handling material, is put into lathe by operator and is carried out in finishing by work Processing；It further takes out after processing is completed, such repetitive cycling.Although the processing that the mode of artificial loading and unloading can complete workpiece is made Industry, but the large labor intensity of operator and since the smaller operator of workpiece be easy to cause workpiece location during installation Deviation, to influence the production precision of product.

Utility model content

The purpose of the utility model is to provide a kind of feeding systems of lathe to guarantee workpiece can be realized accurate feeding The precision of installation site, to avoid the deficiency of artificial loading mode.

The above-mentioned purpose of utility model of the utility model has the technical scheme that

A kind of feeding system of lathe, including lathe body, the lathe body are rotatably connected to for fixing gear Chuck, and lathe body slidably connects knife rest, the lathe body is equipped with feed mechanism and the drive for being equipped with multiple gears The reciprocator of feed mechanism sliding；The reciprocator includes the screw rod and feeder along the setting of lathe body width direction The slide that structure is fixedly connected and the gag lever post being set on the outside of screw rod, the slide are slidably connected with gag lever post.

By using above-mentioned technical proposal, gear is fixedly mounted on chuck, chuck makes with lathe body rotation connection The gear on chuck must be mounted on chuck common rotation, the lathe tool on knife rest is enabled to carry out turning to the gear of rotation； Gear is in turn mounted on chuck by setting feed mechanism, avoid artificial loading cause the error of gear installation site to Machining accuracy is influenced, setting reciprocator drives feed mechanism to slide along lathe body width direction, so that feed mechanism Interlock under the drive of reciprocator reciprocal to chuck progress feeding.

The utility model is further arranged to: the feed mechanism includes two and is set side by side along lathe body width direction Material frame and drive material frame sliding feeding material component；Two feeding material components include with the feeding slide plate that is fixedly connected of material frame with And the feeding slideway connecting with feeding slide plate slides, two feeding slideways are fixedly connected with bracket jointly, the bracket with Slide is detachably connected.

By using above-mentioned technical proposal, if feeding rack is for storing gear, feeding material component drives material frame sliding, to control System material frame is to the feeding of chuck, and feeding slide plate slides on feeding slideway so that feeding slide plate is under the limitation of the track of feeding slideway It is slided, to guarantee to expect that the motion track of frame is consistent, feeding material component is installed to guarantee feeding material component by setting bracket It is stably connected with material frame with lathe body；It is detachably connected by setting bracket with slide, when lathe is for processing other workpiece When, by dismantling bracket from slide, the installation of feed mechanism is avoided to influence processing of the lathe to other workpiece.

The utility model is further arranged to: the branch is provided with driving assembly, and the driving component includes turning with bracket The shaft of dynamic connection and the fluted disc for being fixedly installed on the rocker arm of roller end and being set between two feeding material components, the tooth Disk connect with holder pivots and engages with two feeding slide plates；One of them described feeding slide plate is fixed with sliding rail, described The length direction of sliding rail and the length direction of feeding slide plate are mutually perpendicular to, and the rocker arm is slidably connected with sliding rail.

By using above-mentioned technical proposal, feeding slide plate is driven back and forth to slide on feeding slideway by setting driving assembly Dynamic, when rocker arm is when sliding rail is slidably connected, the feeding slide plate equipped with sliding rail moves back and forth under the drive of rocker arm, in nibbling for fluted disc Under conjunction, two pieces of feeding slide plate reverse movements.

The utility model is further arranged to: the shaft is connected with motor, the output of the motor away from one end Axis is coaxially fixed with shaft.

By using above-mentioned technical proposal, shaft is set and shaft is connected to motor, is driven under the drive of the motor Shaft rotation, so that rocker arm be driven to rotate.

The utility model is further arranged to: the material frame includes the inserted link through pinion mounting holes, the inserted link it is outer Wall and pinion mounting holes inner wall contradict；Connector is equipped between the feeding slide plate and inserted link.

By using above-mentioned technical proposal, inserted link is set for installing gear, expects the connection of frame and feeding slide plate for convenience, Make to expect being detachably connected for frame and feeding slide plate simultaneously, facilitates for gear to be installed to and expect on frame.

The utility model is further arranged to: the inserted link is equipped with flexible clamp piece, the inserted link away from one end of connector The corresponding flexible clamp piece in inside is equipped with card slot, and the inserted link is fixed with conflict plate far from one end of flexible clamp piece, outside the inserted link Wall, which runs through, pressure spring；One end of the pressure spring is fixed with plate is contradicted, and the other end and gear side wall contradict.

By using above-mentioned technical proposal, enable gear is stable to be mounted on by setting flexible clamp piece and conflict plate On inserted link, the gear when feeding slide plate pushes material frame mobile is avoided to be detached to influence feeding from inserted link；By the way that pressure spring is arranged Pressure is applied to gear and guarantees that in feeding process, gear can successively be pushed to chuck.

The utility model is further arranged to: the flexible clamp piece includes being placed in spring inside card slot and along card slot inner wall The multiple elastic cards being circumferentially arranged, multiple elastic cards are equipped with protrusion, and circumferentially correspondence is convex along it for the inserted link side wall It rises and offers limit hole.

By using above-mentioned technical proposal, make the gear being mounted in inserted link is not easily to fall off to insert by the way that flexible clamp piece is arranged Bar, is arranged elastic card and spring guarantees that protrusion is connected in limit hole under the elastic reaction of elastic card and spring, from And it avoids being detached from limit hole influence gear installation in protrusion

The utility model is further arranged to: one end of multiple elastic cards is connected with contact block, the spring jointly One end be fixedly connected with card slot bottom, the other end and contact block contradict.

By using above-mentioned technical proposal；By the way that contact block is arranged the contraction of multiple elastic cards is consistent, spring The stability for guaranteeing that spring is installed in card slot is fixedly connected with card slot bottom, spring and contact block contradict so that contact block is by spring bullet Property act on when not squeezed by external force keep stablize.

The utility model is further arranged to: the inserted link offers through-hole away from one end end for contradicting plate, described logical Hole is connected with card slot and the diameter of through-hole is less than the diameter of card slot, and the contact block is slidably connected through through-hole and with through-hole.

By using above-mentioned technical proposal；Through-hole makes contact block and runs through through-hole and be slidably connected with through-hole, so that From outside, pressing contact block makes spring contraction, so that contact block drives elastic card sliding, so that raised from limit hole It inside exits, realizes that flexible clamp piece is shunk.

In conclusion the advantageous effects of the utility model are as follows: accurate feeding is realized by setting feed mechanism, thus Guarantee that installation site of the gear on chuck is certain, avoids causing installation site deviation and influencing machining accuracy for artificial loading； Two material framves are set, feed mechanism is enabled to add mistake back and forth to chuck along the axial direction of screw rod under the drive of reciprocator Feeding is carried out, the time of shortening strip frame replacement mitigates the load of material frame simultaneously；To expect frame and feeding group by the way that connector is arranged The detachable setting of part facilitates installation of the gear on material frame；Enable gear steady by setting flexible clamp piece and conflict plate Fixed is mounted on inserted link, and pushes gear by setting pressure spring, guarantees to press to chuck in feeding process middle gear to realize Successively feeding.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the part-structure figure of the utility model, mainly shows the connection relationship in lathe body between each component；

Fig. 3 is the part explosive view of the utility model, mainly shows the composed structure of feed mechanism；

Fig. 4 is the part explosive view of the utility model, mainly shows the composed structure of reciprocator；

Fig. 5 is the partial sectional view of the utility model, mainly shows the internal structure of material frame.

In figure, 1, lathe body；2, chuck；3, knife rest；4, feed mechanism；41, expect frame；411, inserted link；4111, outer spiral shell Line；4112, card slot；4113, limit hole；4114, through-hole；412, plate is contradicted；413, pressure spring；414, flexible clamp piece；4141, bullet Spring；4142, elastic card；41421, raised；4143, contact block；42, feeding material component；421, feeding slide plate；422, feeding slideway； 423, pulley；43, bracket；44, driving assembly；441, fluted disc；442, rocker arm；4421, sliding block；443, sliding rail；444, shaft； 445, motor；45, connector；451, screw rod；452, swivel nut；5, reciprocator；51, screw rod；52, slide；53, gag lever post；54, Driving machine；55, connecting plate；56, hydraulic cylinder.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Embodiment:

It referring to Fig.1, is a kind of feeding system of lathe disclosed by the utility model, including lathe body 1, lathe body 1 It is rotatably connected to the chuck 2 for fixing gear, and lathe body 1 slidably connects knife rest 3；Chuck 2 is scroll chuck to tooth Clamping is fixed in wheel, and knife rest 3 is connect with 3 feed system of knife rest of lathe, enables knife rest 3 along the length of lathe body 1 Direction and width direction sliding, and knife rest 3 is equipped with the lathe tool for processing.

Referring to Fig. 2 and Fig. 3, it is equipped with for convenience of gear to be installed on chuck 2, in lathe body 1 for storing installation tooth The feed mechanism 4 of wheel and the reciprocator 5 for driving feed mechanism 4 to slide；Wherein feed mechanism 4 includes two along lathe body 1 The material frame 41 that width direction is set side by side and the feeding material component 42 for driving material frame 41 to slide, gear is mounted on material frame 41, Feeding is carried out to chuck 2 under the drive of feeding material component 42.Two feeding material components 42 include the feeding being fixedly connected with material frame 41 Slide plate 421 and the feeding slideway 422 being slidably connected with feeding slide plate 421, so that feeding slide plate 421 is in feeding slideway 422 Track limits lower slider, to guarantee to expect that the track of 41 feeding of frame is certain, to avoid deviating influence in feeding process The machining accuracy of gear.

Referring to Fig. 2 and Fig. 3, for the stability that guarantee feed mechanism 4 is installed in lathe body 1, feeding slideway 422 is fixed It is connected with the bracket 43 being fixedly connected with reciprocator 5, bracket 43 is equipped with driving assembly 44, and driving assembly 44 includes and bracket 43 It the shaft 444 of rotation connection and is fixedly installed on the Rocker arm 4 42 of 444 end of shaft and is set between two feeding material components 42 Fluted disc 441；One of feeding slide plate 421 is fixed with the length direction and feeding slide plate 421 of sliding rail 443 and sliding rail 443 Length direction be mutually perpendicular to, Rocker arm 4 42 is slidably connected with sliding rail 443, and fluted disc 441 and bracket 43 are rotatablely connected and send with two Material slide plate 421 engages.When Rocker arm 4 42 is when sliding rail 443 is slidably connected, the feeding slide plate 421 equipped with sliding rail 443 is in rocker arm It is moved back and forth under 442 drive, under the engagement of fluted disc 441, two pieces of feeding slide plates 421 are moved backward.

Referring to Fig. 2 and Fig. 3, feeding slide plate 421 is driven to slide in feeding slideway 422 for convenience of gear, two pieces of feedings are sliding Plate 421 is equipped with multiple pulleys being slidably matched with feeding slideway 422 towards the side of feeding slideway 422 along its length 423.Since the side of feeding slide plate 421 sets the stability that material rack 41 is installed as guarantee feeding slide plate 421, pulley 423 is embedded In feeding slideway 422.Sliding rail 443 is slidably connected with Rocker arm 4 42, to guarantee that sliding of the Rocker arm 4 42 in sliding rail 443 can have Effect drives feeding slide plate 421 mobile, and Rocker arm 4 42 is equipped with sliding block 4421 towards the rotation of the side of sliding rail 443, and sliding block 4421 is outer The inner wall of side wall and sliding rail 443 contradicts.

Referring to Fig. 2 and Fig. 4, for convenience of the rotation of Rocker arm 4 42, shaft 444 is connected with motor away from one end of Rocker arm 4 42 445, the output shaft of motor 445 is coaxial fixed with shaft 444, and motor 445 is fixed away from one end of shaft 444 and reciprocator 5 Connection.Drive shaft 444 that Rocker arm 4 42 is rotated in motor 445, since Rocker arm 4 42 is slided along the track of sliding rail 443, Two pieces of feeding slide plates 421 move back and forth under the drive of Rocker arm 4 42.For the normal rotation for guaranteeing Rocker arm 4 42, the length of sliding rail 443 Spend twice at least equal to 4421 center line of sliding block and 444 axis spacing of shaft；And the length of feeding slide plate 421 is greater than sliding rail 443 length.

Referring to Fig. 3 and Fig. 4, since there are two material framves 41, to guarantee that the gear on material frame 41 can be installed to chuck 2 On, reciprocator 5 includes the screw rod 51 being arranged along 1 width direction of lathe body, the slide 52 connecting with bracket 43 and is arranged Gag lever post 53 in 51 outside of screw rod, screw rod 51 and lathe body 1 are rotatablely connected, and one end is coaxially fixed with driving machine 54. Screw rod 51 rotates under the drive of driving machine 54, so that feed mechanism 4 is moved along the axis direction of screw rod 51, to avoid feeder Structure 4 rotates when moving axially along screw rod 51, and slide 52 is slidably connected with gag lever post 53, so that slide 52 moves radially It is limited.

It is since reciprocator 5 drives feed mechanism 4 to move back and forth to carry out feeding to fixture referring to Fig. 2 and Fig. 4 Avoid feed mechanism 4 from colliding with knife rest 3, to influence feeding, slide 52 is equipped with hydraulic cylinder 56, the cylinder portion of hydraulic cylinder 56 with Slide 52 is fixedly connected, and piston rod is fixedly connected with connecting plate 55.Connecting plate 55 connect with feed mechanism 4 and to avoid feeding The installation of mechanism 4 influences processing of the lathe to other workpiece, and bracket 43 is detachably connected with connecting plate 55, when lathe is for processing When other workpiece, by the way that bracket 43 is dismantled.

Referring to Fig. 3 and Fig. 5, two material framves 41 include the inserted link 411 along the setting of 421 length direction of feeding slide plate, inserted link 411 contradict through the mounting hole and its outer wall and pinion mounting holes inner wall of gear, so that the gear being mounted on chuck 2 The center line work line of center line and chuck 2.It is installed on material frame 41, is expected between frame 41 and feeding slide plate 421 for convenience of by gear Equipped with connector 45, connector 45 includes the swivel nut that the screw rod 451 being fixedly connected with slide plate and screw thread are set in 451 outside of screw rod 452, one end of inserted link 411 is correspondingly provided with the external screw thread 4111 being threadedly engaged with swivel nut 452, by swivel nut 452 by screw rod 451 with Inserted link 411 is fixedly connected, so that material frame 41 and feeding slide plate 421 are fixedly connected.

Referring to Fig. 3 and Fig. 5, inserted link 411 is equipped with flexible clamp piece 414 away from one end of external screw thread 4111, and 411 inside of inserted link is right Flexible clamp piece 414 is answered to be equipped with card slot 4112, flexible clamp piece 414 is slidably connected with card slot 4112.Inserted link 411 is far from flexible clamp piece 414 one end, which is fixed with, contradicts plate 412, and 411 outer wall of inserted link is through there is a pressure spring 413, one end of pressure spring 413 and contradicts plate 412 are fixedly connected, and the other end is flushed towards flexible clamp piece 414 and with the end of inserted link 411.When gear is installed in inserted link 411 When, 413 forced contraction of pressure spring contradicts its end and gear, to apply pressure to gear, so that in feeding process middle gear It is pressed towards chuck 2.

Referring to Fig. 3 and Fig. 5, since gear is pushed by pressure spring 413, to guarantee stability that gear is installed on inserted link 411, Flexible clamp piece 414 includes the spring 4141 being placed in inside card slot 4112 and the multiple elastic cards being circumferentially arranged along 4112 inner wall of card slot Piece 4142；Elastic card 4142 is set on 4141 outside of spring and elastic card 4142 and is equipped with away from 4141 side of spring Protrusion 41421,411 side wall of inserted link are equipped with limit hole 4113, limit hole 4113 and protrusion along its circumferential respective protrusions 41421 41421 clampings, limit hole 4113 is protruded from when protrusion 41421 is not squeezed by external force and gear outer wall contradicts.Multiple elastic cards Piece 4142 is connected with contact block 4143 away from the one end for contradicting plate 412 jointly, and one end and 4112 bottom of card slot of spring 4141 are fixed Connection, the other end and contact block 4143 contradict, and make sliding of multiple elastic cards 4142 in card slot 4112 by contact block 4143 It is synchronous.

Referring to Fig. 3 and Fig. 5, inserted link 411 offers through-hole 4114 away from one end end for contradicting plate 412, through-hole 4114 with Card slot 4112 is connected and the diameter of through-hole 4114 is less than the diameter of card slot 4112, and flexible clamp piece 414 is avoided to pass through through-hole 4114 It is detached from card slot 4112.Contact block 4143 is slidably connected through through-hole 4114 and with through-hole 4114, when inserted link 411 is under the drive of push plate When contradicting with the center end face of chuck 2, contact block 4143 is under pressure to 4,112 1 Slideslip of card slot so that spring 4141 by Power is shunk, card sliding along the drive of contact block 4143, so that and its receipts for exiting realization flexible clamp piece 414 out of limit hole 4113 Contracting, the maximum distance slid at this time for feeding slide plate 421.For the validity for guaranteeing flexible clamp piece 414,41421 direction of protrusion is supported The wedge shaped face in the side of touch panel 412, away from the perpendicular vertical vertical plane in 411 axis of inserted link in side for contradicting plate 412.

The implementation principle of the present embodiment are as follows: the material frame 41 for being equipped with multiple gears is fixed by swivel nut 452 and screw rod 451 Connection, realization material frame 41 are fixedly connected with feeding material component 42.When needing to 2 feeding of chuck, chuck 2 is opened, hydraulic cylinder 56 piston rod extends so that 2 entirety of feed mechanism moves down, so that the center line and chuck of one of inserted link 411 2 centerline collineation.Starting motor 445 makes motor 445 that shaft 444 be driven to rotate, so that Rocker arm 4 42 rotates, rocker arm 442 drive sliding rail 443, to realize two pieces of 421 counter motions of feeding slide plate, expect the court under the drive of feeding slide plate 421 of frame 41 Moved to chuck 2, when contact block 4143 and chuck 2 contradict, the pause of motor 445 rotation and chuck 2 collapses, due to contact block 4143 with The conflict of chuck 2 is under pressure so that flexible clamp piece 414 shrinks sliding, and motor 445 rotates so that sending again after 2 gripper of chuck Expect that slide plate 421 moves backward.

When the gear clamped by chuck 2 is detached from limit hole 4113, flexible clamp piece 414 restores, the gear quilt on inserted link 411 Flexible clamp piece 414 limit, motor 445 drive blanking rack 41 far from chuck 2；Motor 445 is closed, the work of hydraulic cylinder 56 is controlled Stopper rod is shunk, and starting lathe processes gear, chuck 2 is opened to feeding again after taking out gear after processing is completed, so Circulate operation.After the gear expected on frame 41 installation all installs, starting driving machine 54 makes feed mechanism 4 along silk The axis direction of bar 51 is mobile, so that the center line of next material frame 41 is aligned with the center line of chuck 2, repeats feeding behaviour Work.After the gear that two are expected on frame 41 is all installed, vacant material frame 41 is disassembled and will be stored again Cogged material frame 41 is installed on feeding slide plate 421.

The embodiment of specific embodiment is the preferred embodiment of the utility model, not limits the utility model according to this Protection scope, therefore: it is practical new should all to be covered by this for the equivalence changes that all structures, shape, principle according to the utility model are done Within the protection scope of type.

Claims (9)

1. a kind of feeding system of lathe, including lathe body (1), the lathe body (1) is rotatably connected to for fixing tooth The chuck (2) of wheel, and lathe body (1) slidably connects knife rest (3), it is characterised in that: the lathe body (1) is equipped with installation There is the feed mechanism (4) of multiple gears and drives the reciprocator (5) of feed mechanism (4) sliding；The reciprocator (5) includes Along the screw rod (51) of lathe body (1) width direction setting, the slide (52) that is fixedly connected with feed mechanism (4) and it is set in Gag lever post (53) on the outside of screw rod (51), the slide (52) are slidably connected with gag lever post (53).

2. a kind of feeding system of lathe according to claim 1, it is characterised in that: the feed mechanism (4) includes two A material frame (41) being set side by side along lathe body (1) width direction and the feeding material component (42) for driving material frame (41) sliding；Two A feeding material component (42) includes the feeding slide plate (421) being fixedly connected with material frame (41) and slides with feeding slide plate (421) The feeding slideway (422) of dynamic connection, two feeding slideways (422) are fixedly connected with bracket (43), the bracket jointly (43) it is detachably connected with slide (52).

3. a kind of feeding system of lathe according to claim 2, it is characterised in that: the bracket (43) is equipped with driving group Part (44), the driving component (44) include the shaft (444) being rotatablely connected with bracket (43) and are fixedly installed on shaft (444) The rocker arm (442) of end and the fluted disc (441) being set between two feeding material components (42), the fluted disc (441) and bracket (43) it is rotatablely connected and is engaged with two feeding slide plates (421)；One of them described feeding slide plate (421) is fixed with sliding rail (443), the length direction of the length direction and feeding slide plate (421) of the sliding rail (443) is mutually perpendicular to, the rocker arm (442) It is slidably connected with sliding rail (443).

4. a kind of feeding system of lathe according to claim 3, it is characterised in that: the shaft (444) deviates from rocker arm (442) one end is connected with motor (445), and the output shaft and shaft (444) of the motor (445) are coaxial fixed.

5. a kind of feeding system of lathe according to claim 2, it is characterised in that: the material frame (41) includes running through tooth The inserted link (411) of mounting hole is taken turns, the outer wall and pinion mounting holes inner wall of the inserted link (411) contradict；The feeding slide plate (421) Connector (45) are equipped between inserted link (411).

6. a kind of feeding system of lathe according to claim 5, it is characterised in that: the inserted link (411) is away from connection One end of part (45) is equipped with flexible clamp piece (414), and corresponding flexible clamp piece (414) are equipped with card slot inside the inserted link (411) (4112), the inserted link (411) is fixed with far from the one end of flexible clamp piece (414) and contradicts plate (412), the inserted link (411) Outer wall, which runs through, pressure spring (413)；One end of the pressure spring (413) and conflict plate (412) are fixed, and the other end is supported with gear side wall Touching.

7. a kind of feeding system of lathe according to claim 6, it is characterised in that: the flexible clamp piece (414) includes The multiple elastic cards (4142) for being placed in the internal spring (4141) of card slot (4112) and being circumferentially arranged along card slot (4112) inner wall, Multiple elastic cards (4142) are equipped with raised (41421), and inserted link (411) side wall is along its circumferential respective protrusions (41421) limit hole (4113) are offered.

8. a kind of feeding system of lathe according to claim 7, it is characterised in that: multiple elastic cards (4142) One end be connected with jointly contact block (4143), one end of the spring (4141) is fixedly connected with card slot (4112) bottom, another End is contradicted with contact block (4143).

9. a kind of feeding system of lathe according to claim 8, it is characterised in that: the inserted link (411) is away from conflict One end end of plate (412) offers through-hole (4114), and the through-hole (4114) is connected with card slot (4112) and through-hole (4114) diameter is less than the diameter of card slot (4112), and the contact block (4143) is through through-hole (4114) and sliding with through-hole (4114) Dynamic connection.