CN211102607U - Nut installation device of small module assembling machine - Google Patents

Abstract

The utility model discloses a nut installation device of little module kludge, its technical scheme main points are: the rack is connected with a mounting mechanism for connecting a nut and a screw rod of a connector, the mounting mechanism comprises a horizontal plate connected with the rack, a vertical mounting plate which moves up and down along the horizontal plate, a mounting cylinder which drives the vertical mounting plate to move up and down, a mounting rod for placing the nut and a mounting motor which drives the mounting rod to rotate, a cylinder body of the mounting cylinder is fixed on the horizontal plate, a piston rod of the mounting cylinder is fixedly connected with the vertical mounting plate, the mounting motor is fixed on the vertical mounting plate and keeps away from the side wall of the horizontal plate, the mounting rod is coaxially fixed on an output shaft of the mounting motor, a mounting groove for placing the nut is formed in the end face, far away from the. The utility model discloses a rational in infrastructure utilizes installation mechanism to be connected nut and screw rod, no longer needs the manual work to rotate the nut this moment to it is more convenient to make the installation of nut.

Description

Nut installation device of small module assembling machine

Technical Field

The utility model belongs to pcb board production facility, more specifically say, it relates to a nut installation device of little module kludge.

Background

The PIN connector is connected on the pcb usually using screw rod and nut when connecting, and the screw rod is pre-buried in the link usually, and later the screw rod of connecting the link passes the pcb and connector simultaneously and is connected with the nut, and thereby current connector carries out threaded connection with nut and screw rod through artifical nut of turning nut usually when connecting.

But the size of pcb board is less usually, and the size of the nut that uses when connecting connector and pcb board is also less, and the condition that the nut dropped easily takes place when the manual work is directly taken the nut, and consequently the process of screwing up through artifical rotation nut is comparatively troublesome.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a nut installation device of little module kludge no longer needs the manual work with nut and screw rod threaded connection, makes the installation of nut more convenient.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a nut installation device of little module kludge, includes the frame, the frame is connected with the installation mechanism of being connected the screw rod of nut and connector, installation mechanism includes the horizontal plate of being connected with the frame, along vertical mounting panel that the horizontal plate reciprocated, the installation cylinder that drives vertical mounting panel reciprocated, be used for placing the installation pole and the installation motor of drive installation pole pivoted of nut, the cylinder body of installation cylinder is fixed in the horizontal plate, the piston rod and the vertical mounting panel fixed connection of installation cylinder, the installation motor is fixed in the vertical mounting panel and keeps away from the lateral wall of horizontal plate, installation pole coaxial fixation is in the output shaft of installation motor, the mounting groove of placing the nut is offered to the terminal surface that the installation motor was kept away from to the installation pole, mounting groove inner wall and the.

Through adopting above-mentioned technical scheme, place connector and pcb board on the tool in proper order when mounting nut, later pass connector and pcb board with the screw rod of connecting plate, place the nut in the mounting groove, the installation cylinder drives installation pole rebound and utilizes the installation motor to drive the installation pole and rotate to with nut and screw rod threaded connection, no longer need the manual work to rotate the nut at mounting nut's in-process, thereby make the installation of nut more convenient.

The utility model discloses further set up to: the frame is connected with the vibration dish of screening nut, the pay-off track of opening part fixedly connected with delivery nut of vibration dish, the frame is connected with shifts the nut to the feed mechanism in the mounting groove, feed mechanism is including the feed block of absorbing the nut, drive the vertical material loading cylinder of feed block vertical migration and drive the horizontal material loading cylinder of feed block horizontal migration, the cylinder body and the frame of horizontal material loading cylinder are connected, the piston rod of horizontal material loading cylinder is connected with the cylinder body of vertical material loading cylinder, the piston rod of vertical material loading cylinder is connected with the feed block, a plurality of absorption holes have been seted up to the feed block lower extreme, absorb the hole upper end simultaneously with vacuum pump connection.

Through adopting above-mentioned technical scheme, utilize the vacuum pump to provide the negative pressure in to the suction hole, utilize the material loading piece to absorb the nut from the material loading track in, later utilize horizontal material loading cylinder and vertical material loading cylinder to drive the material loading piece and remove, will arrange the nut of being connected with the material loading piece in the standing groove, the process of arranging the nut in the standing groove this moment no longer needs the manual work to go on to the process that makes the nut material loading is more convenient.

The utility model discloses further set up to: the constant head tank has been seted up to material loading piece lower extreme, the absorption hole all is located the constant head tank, the degree of depth of constant head tank is less than the axial length of nut, constant head tank inner wall and nut outer wall butt.

Through adopting above-mentioned technical scheme, utilize the constant head tank to inject the position of nut, when making the nut change into quiescent condition by the removal, the relative position between nut and the material loading piece can not change to the process that makes the nut material loading is more stable.

The utility model discloses further set up to: the locating groove top surface is coaxially fixed with a locating rod, the locating groove extends out of the end face of the locating rod, a locating wedge-shaped surface is arranged at the edge of the lower end of the locating rod, when the nut is located in the locating groove, the locating rod is inserted in the nut, and the outer wall of the locating rod is attached to the inner wall of the nut.

Through adopting above-mentioned technical scheme, utilize the location wedge face to lead to the position of nut, make the axis of nut and the axis coincidence of locating lever, the process that gets into the constant head tank at the nut this moment is difficult for receiving the influence.

The utility model discloses further set up to: the nut feeding device is characterized in that the rack is connected with a distributing mechanism for separating a nut from a feeding track, the distributing mechanism comprises a distributing block connected with the rack in a sliding mode and a distributing cylinder for driving the distributing block to move horizontally, a distributing groove is formed in the end face, close to the feeding track, of the distributing block, the distributing groove penetrates through the upper end face of the distributing block, and when the nut is placed in the distributing groove through the feeding track, the upper end face of the nut is higher than the upper end face of the distributing block.

By adopting the technical scheme, the nut does not exist around the nut to be sucked by utilizing the material distributing mechanism, and the nut to be sucked can not be blocked by the nut at the adjacent position of the nut to be sucked when the feeding block moves downwards to suck the nut.

The utility model discloses further set up to: the rack is also connected with a stop block for preventing the nut from being separated from the distributing groove, and the stop block is attached to the side wall, close to the feeding track, of the distributing block.

Through adopting above-mentioned technical scheme, utilize the dog to inject the position of being in the nut that divides the silo, make the distributor block difficult to break away from in the silo from dividing at the removal in-process nut.

The utility model discloses further set up to: the rack is connected with a longitudinal sliding mechanism which drives the installation mechanism to horizontally slide and longitudinally slides, the longitudinal sliding mechanism comprises a longitudinal plate connected with the rack, a longitudinal screw rod rotationally connected with the longitudinal plate and a longitudinal motor driving the longitudinal screw rod to rotate, the horizontal plate slides along the longitudinal plate, the longitudinal screw rod penetrates through the horizontal plate and is in threaded connection with the horizontal plate, the longitudinal motor is fixedly connected with the longitudinal plate, and an output shaft of the longitudinal motor is coaxially fixed with the longitudinal screw rod.

By adopting the technical scheme, the longitudinal motor is utilized to drive the longitudinal screw rod to rotate, so that the mounting mechanism can move back and forth between the feeding mechanism and the turntable.

The utility model discloses further set up to: the frame is connected with the horizontal glide machanism that drives the horizontal lateral sliding of vertical board, horizontal glide machanism includes the horizontal lead screw of being connected with the frame and drives horizontal lead screw pivoted horizontal motor, horizontal board slides with the frame and is connected, horizontal lead screw passes vertical board and both threaded connection, horizontal motor and frame fixed connection, the output shaft and the coaxial fixed of horizontal lead screw of horizontal motor.

By adopting the technical scheme, the transverse sliding mechanism is utilized to drive the mounting mechanism to move, so that bolts can be mounted on two screws of the same connecting plate.

The utility model discloses further set up to: the installation pole upper end is coaxial to be seted up the guiding hole, the guiding hole bottom surface is higher than the bottom surface of mounting groove, the coaxial spigot surface that is provided with towards the slope of installation pole axis direction in guiding hole bottom surface.

Through adopting above-mentioned technical scheme, place the nut in the guiding hole, later utilize the direction to guide the position of nut, make the nut can automatic joint in the mounting groove.

To sum up, the utility model discloses following beneficial effect has:

1. the nut is connected with the screw rod by the mounting mechanism, and the nut does not need to be manually rotated at the moment, so that the nut is more convenient to mount;

2. utilize feed mechanism to arrange the nut in the mounting groove, no longer need the manual work to place the nut in the mounting groove one by one this moment, the simplicity when further improving the nut installation has been increased.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is a schematic view showing the structure of the mounting mechanism of the present embodiment;

FIG. 3 is a schematic view of the present embodiment showing the structure of the mounting rod;

FIG. 4 is an enlarged view of portion A of FIG. 1;

FIG. 5 is a schematic diagram illustrating a structure of a loading block according to the present embodiment;

fig. 6 is a schematic view for showing the structure of the material distributing mechanism in the present embodiment;

FIG. 7 is a schematic view of the structure for showing the movement of the mounting mechanism according to the present embodiment.

Description of the drawings: 1. a frame; 11. a turntable; 12. a jig; 14. a vibrating pan; 15. a feeding track; 2. an installation mechanism; 21. a horizontal plate; 22. a vertical mounting plate; 23. mounting a cylinder; 24. mounting a rod; 241. mounting grooves; 242. a guide hole; 243. a guide surface; 25. installing a motor; 3. a feeding mechanism; 31. feeding a material block; 311. a suction hole; 312. connecting holes; 313. positioning a groove; 314. positioning a rod; 315. positioning a wedge-shaped surface; 32. a vertical feeding cylinder; 33. a horizontal feeding cylinder; 34. feeding the material plate horizontally; 35. vertically feeding the material plate; 4. a material distributing mechanism; 41. a material distributing block; 411. a material distributing groove; 412. a first abdicating groove; 42. a material distributing cylinder; 43. a stopper; 431. connecting grooves; 432. a second abdicating groove; 5. a longitudinal sliding mechanism; 51. a longitudinal plate; 52. a longitudinal lead screw; 53. a longitudinal motor; 6. a transverse sliding mechanism; 61. a transverse lead screw; 62. a transverse motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a nut installation device of little module kludge, as shown in fig. 1, includes carousel 11 and frame 1, and 11 upper ends circumference of carousel use the bolt fastening to have the tool 12 of placing connector and pcb board, and the connector is located the below of pcb board, and carousel 11 rotates to be connected in frame 1 upper end. As shown in fig. 2 and 3, the rack 1 is connected with a mounting mechanism 2 for connecting a nut with a screw of a connector, the mounting mechanism 2 comprises a horizontal plate 21 connected with the rack 1, a vertical mounting plate 22 moving up and down along the horizontal plate 21, a mounting cylinder 23 driving the vertical mounting plate 22 to move up and down, a mounting rod 24 for placing the nut, and a mounting motor 25 driving the mounting rod 24 to rotate, and the mounting motor 25 is a servo motor. The vertical mounting plate 22 is fixed on one side wall of the horizontal plate 21 through a linear guide rail and a sliding block which are vertically arranged, the cylinder body of the mounting cylinder 23 is fixed on one side of the horizontal plate 21 close to the vertical mounting plate 22 through bolts, and the piston rod of the mounting cylinder 23 is connected with the lower end of the vertical mounting plate 22 through bolts. The mounting motor 25 is fixed on the side wall of the vertical mounting plate 22 far away from the horizontal plate 21 by using bolts, the axis of the mounting motor is vertically arranged, and the output shaft of the mounting motor is connected with the mounting rod 24 through a coupler. The mounting groove 241 that is regular hexagon that holds the nut is seted up to installation pole 24 upper end, and the nut is arranged in mounting groove 241, and the outer wall of nut and the inner wall laminating of mounting groove 241, and carousel 11 and tool 12 are passed to installation pole 24 upper end, make the screw rod that the nut and the connecting plate in the mounting groove 241 are connected. Place connector and pcb board on tool 12 in proper order when mounting nut, later pass connector and pcb board with the screw rod of connecting plate, place the nut in mounting groove 241, installation cylinder 23 drives installation pole 24 rebound and utilizes installation motor 25 to drive installation pole 24 and rotate to with nut and screw rod threaded connection, no longer need the artifical nut that rotates at mounting nut's in-process, thereby make the installation of nut more convenient.

As shown in fig. 3, since the mounting rod 24 rotates continuously, in order to facilitate the process of placing the nut in the mounting groove 241, the upper end of the mounting rod 24 is coaxially provided with a guide hole 242 communicated with the mounting groove 241, the bottom surface of the guide hole 242 is higher than the bottom surface of the mounting groove 241, the bottom surface of the guide hole 242 is provided with a guide surface 243 arranged obliquely, and one end of the guide surface 243 close to the axial direction of the mounting rod 24 is inclined downward. The nut is placed in the guide hole 242, and then the position of the nut is guided by the guide surface 243, so that the nut can be automatically clamped in the mounting groove 241.

As shown in fig. 4 and 5, since the nut needs to be manually placed in the mounting groove 241 and the size of the nut is small, the placing process is still troublesome. Therefore, the frame 1 is connected with a vibration disk 14 for screening nuts by bolts, and the opening of the vibration disk 14 is connected with a feeding track 15 for conveying nuts by bolts. The rack 1 is further connected with a feeding mechanism 3 for transferring nuts from the feeding track 15 to the mounting groove 241, and the feeding mechanism 3 comprises a feeding block 31 for sucking the nuts, a vertical feeding cylinder 32 for driving the feeding block 31 to move vertically and a horizontal feeding cylinder 33 for driving the feeding block 31 to move horizontally. The horizontal feeding cylinder 33 is a sliding table cylinder, a cylinder body of the horizontal feeding cylinder is fixedly connected with the rack 1 through bolts, and the upper end of a piston rod of the horizontal feeding cylinder is connected with a horizontal feeding plate 34 through bolts. Vertical material loading cylinder 32 is the slip table cylinder, and its cylinder body uses the bolt to go up flitch 34 with the level and fixes, and its piston rod upper end uses bolted connection to have vertical material loading plate 35, and material loading block 31 uses bolted connection to go up the one end that vertical material loading cylinder 32 was kept away from to flitch 35 in vertical. The lower end of the upper material block 31 is provided with a plurality of suction holes 311, the side wall of the upper material block, which is close to the vertical upper material plate 35, is provided with connecting holes 312 which are simultaneously communicated with the suction holes 311, and the connecting holes 312 are communicated with a vacuum pump. Utilize the vacuum pump to provide the negative pressure in absorbing hole 311, utilize material loading block 31 to absorb the nut from the material loading track in, later utilize horizontal material loading cylinder 33 and vertical material loading cylinder 32 to drive material loading block 31 and remove, will arrange the nut of being connected with material loading block 31 in the standing groove, the process of arranging the nut in the standing groove this moment no longer needs the manual work to go on, thereby the process that makes the nut material loading is more convenient.

As shown in fig. 5, since the feeding block 31 is driven by the horizontal feeding cylinder 33 to move back to water, when the feeding block 31 changes from moving to stationary, the nut moves due to its own attention, which causes the suction hole 311 to be disconnected from the nut, so that the nut is disconnected from the feeding block 31. Therefore, the lower end of the upper block 31 is coaxially provided with a positioning groove 313 for limiting the position of the nut, the depth of the positioning groove 313 is smaller than the length of the nut along the axis of the nut, and the outer wall of the nut is abutted to the inner wall of the positioning groove 313. The positioning groove 313 is used for limiting the position of the nut, so that when the nut is changed from a moving state to a static state, the relative position between the nut and the feeding block 31 cannot be changed, and the nut feeding process is more stable.

As shown in fig. 5, since it is necessary to align the nut with the positioning groove 313 when the upper block 31 moves downward, there is a case where the upper end of the nut cannot be inserted into the positioning groove 313. Therefore, the positioning rod 314 is coaxially welded on the top surface of the positioning slot 313, the positioning slot 313 extends out of the lower end of the positioning rod 314, and the suction hole 311 is arranged around the positioning rod 314. The lower end edge of the positioning rod 314 is provided with a positioning wedge surface 315, and one end of the positioning wedge surface 315 far away from the axis of the positioning rod 314 inclines upwards. When the nut is located the locating hole inslot, locating lever 314 inserts in the nut, and the outer wall and the nut inner wall laminating of locating lever 314. The positioning wedge surface 315 is used for guiding the position of the nut, so that the axis of the nut coincides with the axis of the positioning rod 314, and the process of the nut entering the positioning groove 313 is not easily affected.

As shown in fig. 6, when the loading block 31 moves toward the nuts and sucks the nuts, the adjacent nuts may hinder the downward movement of the loading block 31, so that the upper ends of the sucked nuts cannot be inserted into the positioning grooves 313, thereby affecting the loading of the nuts. Therefore, the machine frame 1 is connected with a material distributing mechanism 4 for separating the sucked nuts from the feeding track 15, and the material distributing mechanism 4 comprises a material distributing block 41 connected with the machine frame 1 in a sliding mode and a material distributing cylinder 42 for driving the material distributing block 41 to move. The material distributing cylinder 42 is a sliding table cylinder, the cylinder body of the material distributing cylinder is connected with the rack 1 through bolts, and the material distributing block 41 is fixed at the upper end of the sliding table of the material distributing cylinder 42 through bolts. The side wall of the distributing block 41 close to the feeding track 15 is provided with a distributing groove 411 for accommodating a nut, the upper end face of the distributing block 41 penetrates through the distributing groove 411, the upper end of the distributing block 41 is provided with a first abdicating groove 412 communicated with the distributing groove 411, and the side wall of the distributing block 41 close to the feeding track 15 penetrates through the first abdicating groove 412. When the nut is placed in the material distribution groove 411, the upper end surface of the nut is higher than the bottom surface of the first avoiding groove 412. The nuts to be sucked are not existed around the nuts to be sucked by the material distributing mechanism 4, and at this time, when the material loading block 31 moves downwards to suck the nuts, the nuts at the adjacent positions of the nuts to be sucked are not blocked.

As shown in fig. 6, the nut may fall from the distributing chute 411 due to the vibration of the distributing block 41 during the moving process. Therefore, the upper end of the rack 1 is in threaded connection with a stop block 43 for preventing the nut from falling from the distributing groove 411, the stop block 43 is positioned between the distributing groove 411 and the feeding track 15, one side wall of the stop block 43 is attached to the opening of the distributing track, and the other side wall of the stop block 43 is attached to the side wall of the distributing block 41 close to the feeding track 15. The side wall of the stop block 43 close to the feeding track 15 is penetrated with a connecting groove 431 communicated with the feeding track 15, and the nut enters the distributing groove 411 through the connecting groove 431. The second abdicating groove 432 is formed in the upper end of the stop block 43, the second abdicating groove 432 penetrates the side wall of the stop block 43 away from the feeding track 15, and after the nut with suction is separated by the distributing block 41, the second abdicating groove 432 is communicated with the first abdicating groove 412. The stop 43 is used to limit the position of the nut in the distributing groove 411, so that the nut is not easy to be separated from the distributing groove 411 during the moving process of the distributing block 41.

As shown in fig. 7, since the loading mechanism 3 has a large volume, there is not enough space if it is directly provided at the lower end of the turntable 11. Therefore, a longitudinal sliding mechanism 5 for driving the mounting mechanism 2 to move close to or away from the rotary table 11 is connected to the frame 1, and the longitudinal sliding mechanism 5 comprises a longitudinal plate 51 connected to the frame 1, a longitudinal screw 52 rotatably connected to the longitudinal plate 51, and a longitudinal motor 53 for driving the longitudinal screw 52 to rotate. The horizontal plate 21 is connected to one side of the longitudinal plate 51 close to the longitudinal screw 52 through a guide rail and a slider, the horizontal plate 21 slides along the longitudinal plate 51, and the longitudinal screw 52 passes through the slider connected with the horizontal plate 21 and is in threaded connection with the slider. The longitudinal motor 53 is fixed to the side of the longitudinal plate 51 close to the horizontal plate 21 by using bolts, is a servo motor, and has an output shaft coaxially fixed to the longitudinal lead screw 52 by a coupling. The longitudinal motor 53 drives the longitudinal screw 52 to rotate, so that the mounting mechanism 2 moves back and forth between the feeding mechanism 3 and the rotary table 11.

As shown in fig. 7, since the connecting plate is connected with two screws, nuts are respectively connected to the two screws. Therefore, the frame 1 is connected with a transverse sliding mechanism 6 which drives the longitudinal plate 51 to horizontally and transversely slide, and the transverse sliding mechanism 6 comprises a transverse lead screw 61 which is rotatably connected with the frame 1 and a transverse motor 62 which drives the transverse lead screw 61 to rotate. The longitudinal plate 51 is connected with the frame 1 through a guide rail slide block, and the transverse lead screw 61 passes through the slide block connected with the longitudinal plate 51 and is in threaded connection with the longitudinal plate 51. The transverse motor 62 is connected to the frame 1 by bolts, and is a servo motor, and its output shaft is coaxially connected to the transverse screw 61 by a coupling. The transverse sliding mechanism 6 is utilized to drive the mounting mechanism 2 to move, so that bolts can be mounted on two screws of the same connecting plate.

The working principle is as follows:

the connector and the pcb are sequentially installed at the upper end of the jig 12, and the connecting plate is arranged at the upper end of the pcb and the screw penetrates through the pcb and the connector. The jig 12 with the connector mounted thereon is then rotated to the upper end of the mounting mechanism 2. The vibrating plate 14 drives nuts to enter the distributing groove 411 through the connecting groove 431, nuts to be sucked are separated from adjacent nuts when the distributing cylinder 42 drives the distributing block 41 to move, then the vertical feeding cylinder 32 drives the feeding block 31 to move downwards, the positioning wedge face 315 is used for guiding the nuts, the upper ends of the nuts are located in the feeding groove, the feeding block 31 is driven to move to the upper end of the mounting rod 24 through the vertical feeding cylinder 32 and the horizontal feeding cylinder 33 at the moment, the vacuum pump stops to enable the nuts to enter the mounting groove 241, then the longitudinal motor 53 drives the longitudinal screw 52 to rotate to enable the mounting rod 24 to move to the lower end of the screw, the mounting motor 25 drives the mounting rod 24 to rotate, and the mounting cylinder 23 drives the mounting rod 24 to move upwards to enable the nuts in the mounting groove 241 to be in threaded connection with the.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (9)

1. The utility model provides a nut installation device of little module kludge which characterized in that: comprises a frame (1), wherein the frame (1) is connected with an installation mechanism (2) which is used for connecting a nut with a screw rod of a connector, the installation mechanism (2) comprises a horizontal plate (21) connected with the frame (1), a vertical installation plate (22) which moves up and down along the horizontal plate (21), an installation cylinder (23) which drives the vertical installation plate (22) to move up and down, an installation rod (24) used for placing the nut and an installation motor (25) which drives the installation rod (24) to rotate, a cylinder body of the installation cylinder (23) is fixed on the horizontal plate (21), a piston rod of the installation cylinder (23) is fixedly connected with the vertical installation plate (22), the installation motor (25) is fixed on the vertical installation plate (22) and is far away from the side wall of the horizontal plate (21), the installation rod (24) is coaxially fixed on an output shaft of the installation motor (25), the installation rod (24) is far away from the end surface of the installation, the inner wall of the mounting groove (241) is attached to the outer wall of the nut.

2. The nut mounting apparatus of a small module assembling machine according to claim 1, characterized in that: the machine frame (1) is connected with a vibrating disk (14) for screening nuts, the opening of the vibrating disk (14) is fixedly connected with a feeding track (15) for conveying the nuts, the machine frame (1) is connected with a feeding mechanism (3) which transfers the nuts into the mounting grooves (241), the feeding mechanism (3) comprises a feeding block (31) for sucking the nut, a vertical feeding cylinder (32) for driving the feeding block (31) to move vertically and a horizontal feeding cylinder (33) for driving the feeding block (31) to move horizontally, the cylinder body of the horizontal feeding cylinder (33) is connected with the frame (1), the piston rod of the horizontal feeding cylinder (33) is connected with the cylinder body of the vertical feeding cylinder (32), a piston rod of the vertical feeding cylinder (32) is connected with the feeding block (31), the lower end of the upper material block (31) is provided with a plurality of suction holes (311), and the upper ends of the suction holes (311) are simultaneously connected with a vacuum pump.

3. The nut mounting apparatus of a small module assembling machine according to claim 2, characterized in that: go up material piece (31) lower extreme and seted up constant head tank (313), absorb hole (311) and all be located constant head tank (313), the axial length of the degree of depth of constant head tank (313) is less than the nut, constant head tank (313) inner wall and nut outer wall butt.

4. The nut mounting apparatus of a small module assembling machine according to claim 3, characterized in that: the positioning rod (314) is coaxially fixed to the top surface of the positioning groove (313), the positioning groove (313) extends out of the lower end surface of the positioning rod (314), a positioning wedge-shaped surface (315) is arranged at the edge of the lower end of the positioning rod (314), when the nut is located in the positioning groove (313), the positioning rod (314) is inserted into the nut, and the outer wall of the positioning rod (314) is attached to the inner wall of the nut.

5. The nut mounting apparatus of a small module assembling machine according to claim 1, characterized in that: the nut feeding device is characterized in that the rack (1) is connected with a distributing mechanism (4) for separating a nut from the feeding track (15), the distributing mechanism (4) comprises a distributing block (41) connected with the rack (1) in a sliding mode and a distributing cylinder (42) for driving the distributing block (41) to move horizontally, a distributing groove (411) is formed in the end face, close to the feeding track (15), of the distributing block (41), the upper end face of the distributing block (41) penetrates through the distributing groove (411), and when the nut is placed in the distributing groove (411) through the feeding track (15), the upper end face of the nut is higher than the upper end face of the distributing block (41).

6. The nut mounting apparatus of a small module assembling machine according to claim 5, wherein: the rack (1) is also connected with a stop block (43) for preventing the nut from being separated from the distributing groove (411), and the stop block (43) is attached to the side wall, close to the feeding rail (15), of the distributing block (41).

7. The nut mounting apparatus of a small module assembling machine according to claim 1, characterized in that: the rack (1) is connected with a longitudinal sliding mechanism (5) which drives the installation mechanism (2) to horizontally slide, the longitudinal sliding mechanism (5) comprises a longitudinal plate (51) connected with the rack (1), a longitudinal screw rod (52) rotationally connected with the longitudinal plate (51) and a longitudinal motor (53) which drives the longitudinal screw rod (52) to rotate, the horizontal plate (21) slides along the longitudinal plate (51), the longitudinal screw rod (52) penetrates through the horizontal plate (21) and is in threaded connection with the horizontal plate (21), the longitudinal motor (53) is fixedly connected with the longitudinal plate (51), and an output shaft of the longitudinal motor (53) is coaxially fixed with the longitudinal screw rod (52).

8. The nut mounting apparatus of a small module assembling machine according to claim 7, wherein: frame (1) is connected with horizontal glide machanism (6) that drives vertical board (51) horizontal lateral sliding, horizontal glide machanism (6) are including horizontal lead screw (61) and the horizontal motor (62) of drive horizontal lead screw (61) pivoted that are connected with frame (1), vertical board (51) slide with frame (1) and are connected, vertical board (51) and both threaded connection are passed in horizontal lead screw (61), horizontal motor (62) and frame (1) fixed connection, the output shaft and the horizontal lead screw (61) coaxial fastening of horizontal motor (62).

9. The nut mounting apparatus of a small module assembling machine according to claim 1, characterized in that: the upper end of the installation rod (24) is coaxially provided with a guide hole (242), the bottom surface of the guide hole (242) is higher than the bottom surface of the installation groove (241), and the bottom surface of the guide hole (242) is coaxially provided with a guide surface (243) inclined towards the axis direction of the installation rod (24).

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