CN113876092A - Automatic threading machine of pearl necklace - Google Patents

Abstract

The utility model relates to an automatic threading machine of pearl necklace relates to pearl threading equipment field, and it includes the frame, and the frame upper end rotates and is connected with a plurality of round rollers that are parallel to each other, and the round roller all sets up along the length direction slope of frame, and the frame is equipped with the adjacent round roller antiport's of drive arrangement, all is equipped with the long needle between two adjacent round rollers, the long needle all with round roller parallel arrangement, long needle one end is connected with soft rope, the frame is equipped with the fixing device who is used for fixed long needle. Drive arrangement drives the circle roller and rotates, and the pearl is from downstream between two adjacent circle rollers, and then is driven by the circle roller and takes place to roll, and the axis of pearl through-hole all is parallel with the long needle under the effect of gravity and centrifugal force, realizes that the pearl is automatic to be stringed on long needle and soft rope at the whereabouts in-process, and then realizes automatic threading, and this application has the higher effect of degree of automation.

Description

Automatic threading machine of pearl necklace

Technical Field

The invention relates to the field of pearl threading equipment, in particular to an automatic threading machine for a pearl necklace.

Background

At present, the living standard is improved, more and more people are pursuing luxury, a pearl necklace is a luxury ornament which is very popular, a through hole is firstly punched on a pearl in the manufacturing process of the pearl necklace, and finally a plurality of pearls are strung together by using a rope.

Generally, pearl and other spherical object beads are manually threaded on a rope one by one, the processing efficiency is extremely low, machines for the beads are also arranged on the market at present, a user can automatically align through holes of pearls by putting a plurality of pearls into the machine, then the rope is fixed at one end of a long needle, the long needle is held by a worker to penetrate through the through holes to string a row of pearls, and finally the long needle is turned over to enable the pearls to fall under the action of gravity and be threaded on the rope.

In view of the above related technologies, the inventor believes that, in the pearl threading process, the pearl threading mode still needs manpower-consuming operations in the processes of controlling the long needle to turn over so that the pearls fall, stringing a row of pearls, then adding the pearls again and the like, and the automation degree of the processing process is low.

Disclosure of Invention

In order to improve degree of automation, this application provides an automatic threading machine of pearl necklace.

The application provides an automatic threading machine of pearl necklace adopts following technical scheme:

the utility model provides an automatic threading machine of pearl necklace, includes the frame, frame upper end rotates and is connected with a plurality of round rollers that are parallel to each other, and the round roller all sets up along the length direction slope of frame, and the frame is equipped with the adjacent round roller antiport's of drive arrangement, all is equipped with the long needle between two adjacent round rollers, the long needle all with round roller parallel arrangement, long needle one end is connected with soft rope, the frame is equipped with the fixing device who is used for fixed long needle.

Through adopting above-mentioned technical scheme, drive arrangement drives the round roller and rotates, and the pearl is from downstream between two adjacent round rollers under the action of gravity, and then is driven by the round roller and takes place to roll, and then makes the axis of pearl through-hole all parallel with the long needle under the effect of gravity and centrifugal force, realizes that the pearl is automatic to be stringed on long needle and soft rope at the whereabouts in-process, and then realizes automatic threading, and degree of automation is higher.

Optionally, fixing device is equipped with two sets ofly, and a set of fixing device is located the intermediate position of long needle, and another group is located the one end that the long needle deviates from the round roller, and fixing device includes two diaphragms that are parallel to each other, and two diaphragms all with frame sliding connection, two diaphragms all have set firmly a plurality of clamping bars, the clamping bar one-to-one of two diaphragms, and two corresponding clamping bars establish to the clamping piece, and the long needle just passes from between two clamping bars that correspond with the clamping piece one-to-one.

Through adopting above-mentioned technical scheme, the diaphragm slides two clamping rods that drive same clamping piece and press from both sides the long needle that corresponds tightly and can realize the fixed to the long needle, and simple structure control is convenient, and two sets of fixing device fix the long needle in turn, can make the pearl wear smoothly on soft rope when guaranteeing that the long needle is stable, and degree of automation is higher.

Optionally, a material storage box is arranged at the upper end of the rack, a plurality of discharging holes are formed in the lower end of the material storage box and correspond to the long needles one to one, a rotating roller is connected in the material storage box in a rotating mode, and soft bristles are fixedly arranged on the outer wall of the rotating roller.

Through adopting above-mentioned technical scheme, the user arranges more pearl in the material storage box, changes the roller and drives soft brush hair rotation, and then sends into the pearl that the unloading is downthehole, and the pearl is difficult to block up in unloading hole department, reduces the manual work and goes on in material loading department, is favorable to improving degree of automation.

Optionally, the frame is equipped with and connects the workbin, connects the workbin to be located the long needle below, and the frame upper end has set firmly the feed back case, and the intercommunication has the feed back pipe between feed back case and storage box, and the feed back pipe is close to the one end of feed back case higher, and the feed back pipe slope sets up and is close to the one end of feed back case higher relatively, and the frame is equipped with from connecing the conveyer belt that the workbin carried to the feed back case, and the conveyer belt is equipped with a plurality of boards of dialling along its circumference.

Through adopting above-mentioned technical scheme, the pearl that unexpected roll from the round roller falls automatically in connecing the workbin under the action of gravity, then upwards moves to the feed back incasement under the effect of conveyer belt and group board, in the automatic feed back workbin that rolls back through the feed back pipe under the action of gravity again, does not need artifical manual to send the pearl that drops back to the workbin, and degree of automation is higher.

Optionally, the frame has set firmly the cylinder, and the cylinder piston rod has set firmly the adjusting lever, and the adjusting lever includes thick pole section and two thin pole sections, and the junction of thick pole section and thin pole section all is equipped with the slope, and the diaphragm all has set firmly the adjusting block near the position of adjusting lever, and two adjusting blocks of same fixing device are located the both sides of adjusting lever respectively, are connected with the elastic component between two diaphragms of same fixing device.

Through adopting above-mentioned technical scheme, the cylinder drives the adjusting lever and removes, and then makes thin pole section and thick pole section contact with the adjusting block in turn, and then changes the interval of two adjusting blocks of same fixing device, and then adjusts the interval of two clamp bars of same clamping piece, realizes pressing from both sides tightly and unclamping the long needle, simple structure, and only need a cylinder, the cost is lower.

Optionally, the driving device includes a first motor, the first motor is fixedly connected to the frame, gears are fixedly arranged at one ends of the circular rollers close to the first motor, the gears of the adjacent circular rollers are meshed with each other, and an output shaft of the first motor is fixedly connected to one of the gears.

Through adopting above-mentioned technical scheme, first motor drive gear rotates, and gear intermeshing realizes adjacent gear antiport, and then controls adjacent round roller antiport, and simple structure controls conveniently.

Optionally, a rubber pad is fixedly arranged on one side, close to each other, of each of the two clamping rods of the same clamping piece.

Through adopting above-mentioned technical scheme, when the clamping piece presss from both sides tightly to the long needle, the rubber pad contacts with the long needle, is favorable to increasing the frictional force of long needle and clamping piece, is difficult for causing wearing and tearing to the long needle simultaneously, is favorable to increase of service life.

Optionally, the both sides of adjusting lever all set firmly the gag lever post, and the gag lever post is the same all the time along its length direction with the interval of adjusting lever, and the adjusting block all is located between gag lever post and the adjusting lever.

Through adopting above-mentioned technical scheme, the gag lever post takes place to slide through two diaphragms of adjusting block control, and then makes the clamping piece press from both sides the long needle tightly, and simple structure control is convenient, and compares in elastic component life longer.

In summary, the present application includes at least one of the following beneficial technical effects:

through the arrangement of the round rollers and the long needle, the round rollers are driven by the driving device to rotate, pearls move downwards from between two adjacent round rollers under the action of gravity and are driven by the round rollers to roll, and the axes of pearl through holes are parallel to the long needle under the action of gravity and centrifugal force, so that the pearls are automatically strung on the long needle and the soft rope in the falling process, automatic threading is realized, and the automation degree is high;

the two groups of fixing devices are arranged, the transverse plate slides to drive the two clamping rods of the same clamping piece to clamp the corresponding long needles, so that the long needles can be fixed, the structure is simple, the control is convenient, the two groups of fixing devices alternately fix the long needles, the pearls can be smoothly threaded on the soft rope while the stability of the long needles is guaranteed, and the automation degree is high;

through setting up conveyer belt and feed back pipe, the pearl that unexpected rolled from the round roller falls automatically in the material receiving box under the action of gravity, then upwards moves to the feed back incasement under the effect of conveyer belt and group board, again in the automatic feed back case that rolls of feed back pipe under the action of gravity, does not need artifical manual to send the pearl that drops back the material receiving box, and degree of automation is higher.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.

Fig. 2 is a partial schematic view of the present application in which embodiment 1 is intended to highlight the position of the second motor and the driving device.

Fig. 3 is a schematic structural view of a fixing device in embodiment 1 of the present application.

Fig. 4 is a schematic view of the overall structure of embodiment 2 of the present application.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Description of reference numerals: 1. a frame; 11. a material storage box; 12. returning the material tank; 121. a material return pipe; 13. a material receiving box; 131. a discharge pipe; 2. a round roller; 21. a gear; 3. a drive device; 31. a first motor; 4. a long needle; 41. a flexible cord; 5. a fixing device; 51. a transverse plate; 511. an adjusting block; 52. a clamping member; 521. a clamping lever; 53. an elastic member; 6. rotating the roller; 61. a second motor; 7. a conveyor belt; 71. dialing a plate; 8. a cylinder; 81. an adjusting lever; 811. a limiting rod; 812. a thick rod section; 813. a slender rod section; 814. a ramp.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses an automatic threading machine of pearl necklace.

Example 1:

referring to fig. 1, an automatic threading machine for pearl necklaces comprises a rack 1, wherein a storage box 11 is installed at one end of the rack 1 in the length direction, pearls to be threaded are placed into the storage box 11 by a user, a plurality of feeding holes are formed in the lower end of the storage box 11, and the pearls roll out through the feeding holes under the action of gravity; frame 1 upper end portion rotates and is connected with a plurality of round rollers 2 that are parallel to each other, and every unloading hole all aligns the intermediate position of two adjacent round rollers 2, and the pearl falls between two adjacent round rollers 2, and a plurality of long needles 4 are installed to frame 1, and the cluster is on long needle 4 when the pearl whereabouts, and long needle 4 deviates from the one end of round roller 2 and installs soft rope 41, and the pearl is along 4 clusters of long needles on soft rope 41.

Referring to fig. 1 and 2, a roller 6 is installed in the storage box 11, the roller 6 is in a cylindrical shape with a horizontal axis, and pearls are positioned above the roller 6; a second motor 61 is fixedly installed on the storage box 11, an output shaft of the second motor 61 is coaxially and fixedly connected with one end of the rotating roller 6, a user starts the second motor 61, and the second motor 61 drives the rotating roller 6 to rotate; the roller 6 is installed a plurality of soft brush hairs along self circumference, and soft brush hair rotates along with roller 6 is synchronous, and the soft brush hair deviates from the one end of roller 6 and 11 inner wall contacts of material storage box, and some pearls are driven by soft brush hair and move to roller 6 below, and then fall between two corresponding round rollers 2 through the unloading hole.

Referring to fig. 1 and 2, the round rollers 2 are obliquely arranged, one end of each round roller close to the storage box 11 is relatively high, and pearls roll towards the lower end of each round roller 2 under the action of gravity; a first motor 31 is fixedly installed on the rack 1, gears 21 are coaxially and fixedly installed at one ends, close to the storage box 11, of the circular rollers 2, an output shaft of the first motor 31 is coaxially and fixedly connected with the gear 21 located at the middle position, and the first motor 31 drives the corresponding gear 21 to rotate in a starting state; adjacent gears 21 mesh with each other to achieve simultaneous rotation of all gears 21 and opposite rotation of adjacent gears 21.

Referring to fig. 1 and 2, the circular rollers 2 rotate synchronously with the corresponding gears 21, namely, the adjacent circular rollers 2 rotate in opposite directions, pearls are driven by the circular rollers 2 to rotate, at the moment, under the simultaneous action of centrifugal force and gravity, the axes of pearl through holes tend to be parallel to the circular rollers 2 gradually, and at the moment, the axes of the through holes of the same row of pearls between the adjacent circular rollers 2 are located on the same straight line gradually.

Referring to fig. 1, the long needles 4 are all parallel to the circular rollers 2 and are respectively located on the moving tracks of pearls in different rows, one end of each long needle 4 close to the circular roller 2 extends to a position between the two corresponding circular rollers 2, at the moment, the pearls fall, the long needles 4 automatically penetrate into the through holes, the pearls in the same row are automatically stringed on the long needles 4, the pearls continuously move downwards along the long needles 4 under the action of gravity, meanwhile, new pearls are continuously stringed on the long needles 4, and the processing speed is high.

Referring to fig. 1 and 3, a cylinder 8 is installed on one side of a frame 1, a cylinder body of the cylinder 8 is fixed on the frame 1, an axis of a piston rod of the cylinder 8 is parallel to an axis of a round roller 2, an adjusting rod 81 is fixedly installed on the piston rod of the cylinder 8, and the adjusting rod 81 can be driven to move along the axis direction of the piston rod of the cylinder 8 when the cylinder 8 is started. The frame 1 is provided with two groups of fixing devices 5, and a user can fix the long needle 4 by using the fixing devices 5, so that the long needle 4 is stable and is not easy to move; fixing device 5 includes two parallel and upper and lower horizontal plates 51 that set up each other, and two horizontal plates 51 all set up along the width direction level of frame 1, and the both ends of horizontal plate 51 all with frame 1 sliding connection.

Referring to fig. 1 and 3, the one end of the transverse plate 51 close to the cylinder 8 all extends to the outside of the frame 1 and is all fixedly mounted with the adjusting block 511, the adjusting block 511 is all vertically arranged, the transverse plate 51 located above is provided with a first strip-shaped hole, the adjusting block 511 of the transverse plate 51 below extends to the transverse plate 51 above through the first strip-shaped hole, and the two adjusting blocks 511 are respectively located at two sides of the width direction of the adjusting rod 81.

Referring to fig. 3, an elastic member 53 is installed between the two transverse plates 51 of the same set of fixing devices 5, the elastic member 53 is a spring, two ends of the elastic member 53 are respectively and fixedly connected with the two transverse plates 51, the elastic member 53 is located at one end of the transverse plates 51 close to the cylinder 8, when the elastic member 53 is in a natural state, the adjusting blocks 511 of the two transverse plates 51 are in contact with each other, that is, when the adjusting rod 81 is located between the two adjusting blocks 511, the two adjusting blocks 511 are respectively abutted against two sides of the adjusting rod 81.

Referring to fig. 3, the adjusting rod 81 comprises a thick rod section 812 and two thin rod sections 813, wherein the two thin rod sections 813 are respectively located at two ends of the thick rod section 812, and when the two adjusting blocks 511 are respectively contacted with two sides of the thin rod sections 813, the distance between the two adjusting blocks 511 is smaller; the clamping rods 521 are fixedly mounted on the two transverse plates 51, a plurality of second strip-shaped holes matched with the clamping rods 521 of the lower transverse plate 51 are formed in the upper transverse plate 51, the clamping rods 521 of the lower transverse plate 51 extend onto the upper transverse plate 51 through the corresponding second strip-shaped holes, the clamping rods 521 of the two transverse plates 51 correspond to one another, the two corresponding clamping rods 521 form a clamping piece 52, and the distance between the two clamping rods 521 of the same clamping piece 52 is smaller.

Referring to fig. 3, the clamping pieces 52 of the same fixing device 5 correspond to the long needles 4 one by one, and the long needles 4 pass through between the two clamping rods 521 of the corresponding clamping piece 52, so that the two clamping rods 521 clamp the corresponding long needles 4; the equal fixed mounting in one side that two clamp lever 521 of same clamping piece 52 are close to each other has a rubber pad, rubber pad and long needle 4 direct contact, and the rubber pad takes place the deformation under the extrusion of clamp lever 521, and long needle 4 received the frictional force that comes from clamp lever 521 this moment great, and stability is better, compares in clamp lever 521 and long needle 4 direct contact simultaneously, and the rubber pad is difficult for causing wearing and tearing to long needle 4.

Referring to fig. 3, a group of fixing devices 5 is located at the middle position of the long needle 4 in the length direction, the adjusting block 511 of the group of fixing devices 5 is in contact with the thin rod section 813 of the adjusting rod 81 at the end away from the cylinder 8, the clamping piece 52 of the group of fixing devices 5 temporarily fixes the long needle 4 from the middle position of the long needle 4, and when a pearl slides to the clamping piece 52 of the group of fixing devices 5, the pearl is blocked by the clamping rod 521 and cannot move continuously along the long needle 4; the user controls the extension of the piston rod of the cylinder 8 to drive the adjusting rod 81 to move along the length direction thereof, and at the same time, the adjusting rod 81 and the adjusting block 511 slide relatively.

Referring to fig. 3, another set of fixing devices 5 is located at one end of the long needle 4 away from the round roller 2, and the two sets of fixing devices 5 have the same structure; the connecting parts of the thick rod section 812 and the thin rod section 813 are both provided with a slope 814, at this time, two adjusting blocks 511 of the group of fixing devices 5 slide relative to the adjusting rod 81 and gradually contact with the thin rod section 813 of the adjusting rod 81 close to one end of the cylinder 8 through the corresponding slopes 814, at this time, the clamping piece 52 of the group of fixing devices 5 clamps the corresponding long needle 4, and the long needle 4 is temporarily fixed; at this time, one end of the long needle 4 close to the round roller 2 is supported by pearls through the round roller 2, and the long needle 4 is not easy to deviate axially.

Referring to fig. 1 and 3, the adjusting rod 81 continues to move, so that the adjusting blocks 511 of the fixing device 5 located in the middle of the long needle 4 gradually contact the thick rod section 812 through the corresponding slopes 814, at this time, the distance between the two adjusting blocks 511 of the fixing device 5 in the group becomes larger, the corresponding transverse plate 51 and the rack 1 are driven to slide relatively, the adjusting blocks 511 of the lower transverse plate 51 slide in the first strip-shaped holes, meanwhile, the clamping rods 521 of the lower transverse plate 51 slide in the corresponding second strip-shaped holes, the distance between the same clamping pieces 52 of the fixing device 5 in the group becomes larger, the clamping effect on the long needle 4 is lost, and when the distance between the two clamping rods 521 is larger than the diameter of a pearl, the pearl continues to slide downwards along the long needle 4.

Referring to fig. 3, when the pearl moves to the fixing device 5 at the end of the long needle 4, the pearl is blocked by the clamping rod 521 and cannot move downwards, at this time, the user controls the piston rod of the air cylinder 8 to retract, so that the two groups of fixing devices 5 switch the clamping state of the long needle 4, and at this time, the pearl between the two groups of fixing devices 5 continuously slides downwards and is further stringed on the soft rope 41; the clamping pieces 52 of the two groups of fixing devices 5 alternately clamp the long needles 4, so that when the pearls are strung on the soft rope 41 through the long needles 4, manual operation is less, and the automation degree is higher.

Referring to fig. 1, when pearls move on a round roller 2, parts of the pearls inevitably fall off, a material receiving box 13 is installed at a position, below a long needle 4, of a rack 1, and the fallen pearls are collected by the material receiving box 13; the lower end face of the material receiving box 13 is inclined, and pearls move to a lower position along the inclined face under the action of gravity; the position of the lowest height of the material receiving box 13 is communicated with a material discharging pipe 131, the material discharging pipe 131 extends out of the machine frame 1, and pearls in the material receiving box 13 move out of the machine frame 1 through the material discharging pipe 131.

Referring to fig. 1, a conveyor belt 7 is installed on one side of a rack 1, the conveyor belt 7 is obliquely arranged, one end of the conveyor belt 7 is located below a discharge pipe 131, the other end of the conveyor belt is located at the upper end of the rack 1, pearls fall on the conveyor belt 7 through the discharge pipe 131, a shifting plate 71 is fixedly installed on the conveyor belt 7 along the circumferential direction of the conveyor belt 7, and the pearls move to the upper end of the rack 1 along with the conveyor belt 7 under the action of the shifting plate 71; the upper end of the frame 1 is fixedly provided with a material return box 12, and pearls automatically fall into the material return box 12 when moving to the highest position of the conveyor belt 7.

Referring to fig. 1, a material return pipe 121 is communicated between the lower end of the material return box 12 and the material storage box 11, the material return pipe 121 is in an inclined straight pipe shape, one end close to the material return box 12 is relatively high, pearls automatically move into the material return box 11 through the material return pipe 121, then, threading processing of the falling pearls is automatically carried out again, and the automation degree is high.

The implementation principle of the automatic threading machine of pearl necklace of the embodiment of this application is: pearls in the storage box 11 roll out between two adjacent round rollers 2 through the blanking hole under the action of gravity, and the through holes are automatically aligned with the long needles 4 under the action of centrifugal force and gravity, so that the pearls are automatically stringed on the long needles 4; the clamping pieces 52 of the two fixing devices 5 alternately fix the long needle 4, so that pearls can smoothly pass through the long needle 4 and be stringed on the soft rope 41 while the stability of the long needle 4 is guaranteed; the fallen pearls automatically return to the storage box 11 through the receiving box 13, the conveying belt 7 and the return box 12, the number of parts needing manual operation in the processing process is small, and the automation degree is high.

Example 2:

referring to fig. 4 and 5, the main difference between this embodiment and embodiment 1 is that two sides of the adjusting rod 81 are both provided with a limiting rod 811, two ends of the limiting rod 811 are both fixedly connected with the adjusting rod 81, adjusting blocks 511 of two fixing devices 5 extend from between the limiting rod 811 and the adjusting rod 81 to above the adjusting rod 81, that is, when the piston rod of the cylinder 8 extends and contracts, the adjusting blocks 511 and the adjusting rod 81 move relatively between the limiting rod 811 and the adjusting rod 81, the adjusting blocks 511 are all in a cylindrical shape with vertical axis, the distance between the limiting rod 811 and the adjusting rod 81 along the length direction of the limiting rod 811 is always matched with the diameter of the adjusting blocks 511, when two adjusting blocks 511 of the same fixing device 5 are contacted with the thin rod section 813, the clamping piece 52 is tightly attached to the two sides of the adjusting rod 81 all the time under the action of the limiting rod 811, the transmission effect is good, and the phenomenon that the long needle 4 is axially deviated due to the poor clamping effect of the clamping piece 52 on the long needle 4 is not easy to occur.

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

Claims (8)

1. The utility model provides an automatic threading machine of pearl necklace, includes frame (1), its characterized in that: frame (1) upper end rotates and is connected with a plurality of round rollers (2) that are parallel to each other, and the length direction slope setting of frame (1) is all followed in round roller (2), and frame (1) is equipped with drive adjacent round roller (2) antiport drive arrangement (3), all is equipped with long needle (4) between two adjacent round roller (2), long needle (4) all with round roller (2) parallel arrangement, long needle (4) one end is connected with soft rope (41), and frame (1) is equipped with fixing device (5) that are used for fixed long needle (4).

2. The automatic threading machine of pearl necklace as claimed in claim 1, wherein: fixing device (5) are equipped with two sets ofly, a set of fixing device (5) are located the intermediate position of long needle (4), another group is located long needle (4) and deviates from the one end of circle roller (2), fixing device (5) include two diaphragm (51) that are parallel to each other, two diaphragm (51) all with frame (1) sliding connection, two diaphragm (51) all have set firmly a plurality of clamp bar (521), clamp bar (521) the one-to-one of two diaphragm (51), establish clamp piece (52) in two corresponding clamp bar (521), long needle (4) and clamp piece (52) one-to-one just pass between two clamp bar (521) from corresponding.

3. The automatic threading machine of pearl necklace as claimed in claim 1, wherein: the improved long needle brush machine is characterized in that a storage box (11) is arranged at the upper end of the rack (1), a plurality of discharging holes are formed in the lower end of the storage box (11), the discharging holes correspond to the long needles (4) one to one, a rotating roller (6) is connected in the storage box (11) in a rotating mode, and soft brush bristles are fixedly arranged on the outer wall of the rotating roller (6).

4. The automatic threading machine of pearl necklace as claimed in claim 1, wherein: frame (1) is equipped with and connects workbin (13), connects workbin (13) to be located long needle (4) below, frame (1) upper end has set firmly feed back case (12), feed back case (12) and material storage box (11) intercommunication have feed back pipe (121), feed back pipe (121) are close to the one end of feed back case (12) higher, feed back pipe (121) slope sets up and is close to the one end of feed back case (12) higher relatively, frame (1) are equipped with from connecing conveyer belt (7) that workbin (13) carried to feed back case (12), conveyer belt (7) are equipped with a plurality of group boards (71) along its circumference.

5. The automatic threading machine of pearl necklace as claimed in claim 1, wherein: frame (1) has set firmly cylinder (8), cylinder (8) piston rod has set firmly adjusting lever (81), adjusting lever (81) include thick pole section (812) and two thin pole sections (813), the junction of thick pole section (812) and thin pole section (813) all is equipped with slope (814), adjusting block (511) have all been set firmly in the position that diaphragm (51) are close to adjusting lever (81), two adjusting block (511) of same fixing device (5) are located the both sides of adjusting lever (81) respectively, be connected with elastic component (53) between two diaphragm (51) of same fixing device (5).

6. The automatic threading machine of pearl necklace as claimed in claim 1, wherein: the driving device (3) comprises a first motor (31), the first motor (31) is fixedly connected with the rack (1), gears (21) are fixedly arranged at one ends, close to the first motor (31), of the round rollers (2), the gears (21) of the adjacent round rollers (2) are mutually meshed, and an output shaft of the first motor (31) is fixedly connected with one of the gears (21).

7. The automatic threading machine of pearl necklace as claimed in claim 2, wherein: rubber pads are fixedly arranged on the sides, close to each other, of the two clamping rods (521) of the same clamping piece (52).

8. The automatic threading machine of pearl necklace as claimed in claim 5, wherein: the both sides of adjusting lever (81) all set firmly gag lever post (811), gag lever post (811) are the same all the time along its length direction with the interval of adjusting lever (81), and adjusting block (511) all are located between gag lever post (811) and adjusting lever (81).

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