CN111455585B

CN111455585B - Full-automatic bottom line replacing device of embroidery machine

Info

Publication number: CN111455585B
Application number: CN202010383305.0A
Authority: CN
Inventors: 邓钦泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2021-06-01
Anticipated expiration: 2040-05-08
Also published as: CN111455585A

Abstract

The invention discloses a full-automatic bobbin thread changing device of an embroidery machine, which comprises a guide rail and a base plate, wherein the guide rail and the base plate are assembled on a rack, the base plate is matched with a motor through a sliding seat to realize that the base plate horizontally moves on the guide rail, and a winding system, a thread loading finger mechanism, a bobbin replacing mechanism, a thread pulling mechanism and a bobbin changing mechanism are respectively assembled on the base plate. The invention realizes the replacement of the bottom thread of the embroidery machine by forming the full-automatic bottom thread replacing device for the embroidery machine, which is arranged on the linear track arranged below the frame of the embroidery machine and the bottom thread working positions and horizontally moves to the working positions needing replacing the bottom thread along a plurality of bottom thread working positions of the embroidery machine, replaces the current manual operation mode, realizes the embroidery intellectualization, ensures that one worker can operate a plurality of multi-head overlong embroidery machines, and greatly reduces the operation difficulty and the labor input.

Description

Full-automatic bottom line replacing device of embroidery machine

Technical Field

The invention relates to the technical field of textile production, in particular to a full-automatic bottom line changing device of an embroidery machine.

Background

At present, the technique of computerized embroidery machine is constantly iterated and upgraded, and the current development of computerized embroidery machine technique is mainly to the development of the high rotational speed direction of multistation, makes production efficiency constantly promote, but the computerized embroidery machine bottom line comprises bobbin case and shuttle peg, and when the embroidery machine ran to the bottom line and run out, all need to change bobbin case (shuttle peg), and the bull embroidery machine trades the bobbin case and will consume a large amount of down time, therefore the work efficiency of changing the bobbin case seriously has restricted further promotion of embroidery machine production efficiency.

Meanwhile, the existing multi-head embroidery machine is characterized in that a rack is provided with a row of machine head stations with a large number, each machine head station is provided with a shuttle box body, and a machine head for installing a shuttle shell is arranged in the shuttle box body. Be provided with bolt lock handle and bolt-lock slider on the bobbin case, make bolt-lock slider slide to the inboard through stirring bolt bobbin handle and can be in order to unblock the bobbin case fast, realize bobbin case installation and dismantlement. Because its aircraft nose of embroidery machine and shuttle box body interval space are little, the affiliated structure is comparatively complicated, and sets up highly often at ordinary people's waist, and the space is less when the bobbin case is changed, needs the manual work to squat down and changes, and intensity of labour is high, and production efficiency is low. The bobbin case and the bottom thread can be automatically replaced by mechanical equipment, so that the method becomes a key research direction for improving the working efficiency of the computerized embroidery machine.

At present, due to the demands of embroidery markets, the embroidery machines are continuously updated and upgraded, the speed is increased from 750 revolutions per minute to 1200 revolutions per minute to 1500 revolutions per minute, the number of working machine heads is increased from 20 machine heads to 200 machine heads, and the length of the machine body is increased to 20 meters.

The pattern of the embroidery machine is formed by matching upper threads and bottom threads through a mechanical principle, a set of mechanism for installing the bottom threads is correspondingly arranged below each machine head, and the mechanism consists of a rotating shuttle box body, a rotating shuttle, a shuttle shell and a shuttle peg. The upper thread is limited in the placing position, a yarn with the quantity of 3000-5000 meters or more can be placed above each machine head, the replacing period is once within 24-48 hours, the quantity of the bottom thread is determined by the size of the shuttle peg, the diameter of the shuttle peg is limited due to the limitation of the shuttle shell and the rotating shuttle structure for placing the shuttle peg, the length of the yarn wound with the shuttle peg is about 15 meters (determined according to the thickness of the yarn), and the bottom thread needs to be replaced about 20 minutes under the condition that the embroidery machine normally and continuously works.

The complete process of changing the bottom line is as follows: the process of changing the bobbin, pulling the thread end, winding and loading the bobbin is a set of process, taking an embroidery machine with 100 heads as an example, the time for changing 100 bobbins is about 10-12 minutes (measured by the proficiency of workers), because in the field actual operation, no matter how many embroidery machines with heads are used up, all bobbin threads cannot be used up simultaneously, the bobbin threads are uniformly changed as long as 2-3 of the bobbin threads are used up, more than 90% of the unused bobbin threads in the changed bobbin cores have the unused yarns, all the unused yarns in the bobbin cores need to be manually removed, the bobbin cores can be placed on a bobbin winder to wind the empty bobbin cores, the thread pulling process needs about 5-8 minutes (measured by the proficiency of workers), the bobbin winder is full of 100 bobbin cores, about 20 minutes is needed (standby bobbin cores are simultaneously wound, the time can be ignored), if the bobbin threads are changed once according to 20 minutes, the time for changing the shuttle peg and drawing the surplus thread also needs about 20 minutes, and one worker is skilled again and can only see one machine, but for the embroidery market at present, the labor cost is the highest, even exceeds the profit, and the ideal is that one worker operates 2 machines, and can operate 4 machines better!

The bobbin changing device has several designed bobbin changing devices in the industry, and has the main functions that the bobbin case and the bobbin core in the working position are taken down at the same time and placed on a spare material disc, then the bobbin case with the bobbin core (full of yarn) manually arranged is grabbed and placed in the rotating shuttle in the working position, and then the rotating shuttle returns to the original position to wait for the next command to be summarized; all bobbin changing devices tried in the industry at present are not real bobbin changing devices, only can be a bobbin case changing device, also have a spare material adding disc, automatically change the spare material disc, each disc has 10 spare bobbins and bobbin cases at most, 100 embroidery machines of heads need to be installed with 10 sets of devices, if the spare disc is added, 20 spare discs need to be installed, and 200 sets of bobbin cases and bobbins need to be spare except 100 bobbins and bobbin cases which are in a working state on the station of the embroidery machine. No matter how spare, how much spare, still need the workman to go to get the shuttle peg, draw surplus yarn, again with the shuttle peg of full line of winding installation into the shuttle peg, lay on reserve charging tray again, workman's labour still does not alleviate a little, and a workman operates many machines still and can not realize, and after getting into the market and trying, the acceptance still is very low.

The existing multi-head embroidery machines on the market have two functions, one is to cut off the connecting part of the bottom thread and the upper thread and the fabric, the other is to cut off the connecting part of the bottom thread and the upper thread and the fabric because the distance between the machine heads is too small, the number of the heads is too large, and no thread cutting position is installed, so the machine is called as a thread cutting machine, all the devices on the current trial can only be used on the thread cutting machine, if the thread cutting function of the embroidery machine fails, a certain machine head does not cut off the thread and has no detection function, the bobbin case changing device can be caused to forcedly execute subsequent actions when grabbing the bobbin case and the bobbin core, the thread head can bias the bobbin case on the manipulator in the descending process, and when the bobbin case is placed into the material tray by the manipulator, the bobbin case is placed on the material tray in a non-concentric manner, but the forced execution is still carried out, and the. The wire cutting machine is not applicable at all, which is also the reason of low market acceptance.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a full-automatic bottom line replacing device of an embroidery machine, which aims to overcome the technical problems in the prior related art.

The technical scheme of the invention is realized as follows:

the base plate is matched with a motor through a sliding seat, so that the base plate can horizontally move on the guide rail, the base plate is respectively provided with a winding system, a thread loading finger mechanism, a bobbin replacing mechanism, a thread pulling mechanism and a bobbin changing mechanism, wherein the winding system comprises a winding main transmission mechanism, a winding auxiliary mechanism, a bobbin feeding mechanism and a thread passing system, and the bobbin replacing mechanism and the thread pulling mechanism are respectively positioned between the winding main transmission mechanism and the bobbin changing mechanism.

Further, the bobbin case replacing mechanism comprises a circulating material tray assembled on the base plate, the circulating material tray rotates through a third driving motor assembled on the back of the base plate, a first vertical plate assembled on the base plate is arranged on one side of the circulating material tray, a sliding rail and a first screw rod are arranged on the first vertical plate, the first screw rod is connected with a first driving motor, a first sliding plate is movably connected onto the sliding rail and the first screw rod, a front sliding rail and a rear sliding rail which can move forwards and backwards are installed on the first sliding plate, a second sliding plate is connected onto the front sliding rail and the rear sliding rail, and the first sliding plate and the second sliding plate are connected through a first cylinder to drive the second sliding plate to move;

fixed axle joint support pole is passed through to second slide upper end, bushing and connecting axle are installed to the bracing piece upper end, connecting axle one end is connected with the mounting panel, positioning channel section is installed to the mounting panel front end, install buffer spring between mounting panel and the bushing, the mounting panel top is equipped with tangent line blade, first arc claw is installed on the right side on the mounting panel, one-way cylinder is installed to mounting panel one side, one-way cylinder front end sets up the first arc claw of connecting rod drive and rotates.

Furthermore, the shuttle peg replacing mechanism comprises a first slide bar, a second slide bar and a second screw bar which are assembled on the base plate, one end of the second screw bar is connected with a second driving motor, slide seats are arranged on the first slide bar and the second slide bar, a double-shaft cylinder is arranged on each slide seat, one end of each double-shaft cylinder is connected with a support plate, a shaft sleeve is arranged at the upper end of each support plate, a driven gear is arranged at one end of each shaft sleeve, a connecting shaft is inserted in the middle of each shaft sleeve, a motor is arranged below each shaft sleeve, a main transmission gear is arranged on each motor, and the main transmission gear is meshed with the driven gear;

the improved steel wire rope pushing device is characterized in that one end of the connecting shaft is connected with a placing plate, a connecting frame is arranged on the left side of the placing plate, an upper clamp and a lower clamp which are meshed with each other through teeth are installed at the front end of the connecting frame, a steel sheet in a straight line is installed at the front end of the upper clamp, a pushing one-way cylinder is connected to the rear end of the upper clamp, a second arc-shaped claw is installed on the upper right side of the placing plate, a pushing connecting rod is installed below the second arc-shaped claw, and the pushing connecting rod is connected with a.

Furthermore, the thread pulling mechanism comprises a shuttle peg positioning shaft sleeve arranged on the base plate, a central positioning shaft of a telescopic shuttle peg is arranged in the shuttle peg positioning shaft sleeve, the central positioning shaft is connected with an adjusting cylinder, the adjusting cylinder is arranged on the back of the base plate, a thread hooking swing fork swinging left and right is arranged below the shuttle peg positioning shaft sleeve, one end of the thread hooking swing fork is connected with a fourth speed reducing motor, and the fourth speed reducing motor is arranged on the back of the base plate;

the shuttle peg locating shaft sleeve is characterized in that a thread clamping head upper clamp and a thread clamping head lower clamp are respectively arranged on the left side of the shuttle peg locating shaft sleeve, the thread clamping head lower clamp is connected with a swing rod through a first sliding block, the swing rod is connected with a first speed reducing motor, the first speed reducing motor is installed on the back face of a base plate, a driving wheel driven by a second speed reducing motor is arranged on the right side of the shuttle peg locating shaft sleeve, the second speed reducing motor is installed on the back face of the base plate, a vacuum generator is installed on the right side of the driving wheel, the vacuum generator is installed on the base plate, a swing connecting rod is arranged on the upper right side of the shuttle peg locating shaft sleeve, a clamping bolt for clamping a shuttle peg is arranged at the left end of the swing connecting rod, a driven wheel is installed at the right.

Furthermore, the left side of the shuttle peg positioning shaft sleeve is located a shuttle peg slide way is arranged on the base plate, one end of the shuttle peg slide way is close to the shuttle peg positioning shaft sleeve, a shuttle peg feeding push block is arranged at the bottom end of the shuttle peg slide way, a connecting swing rod is arranged at the bottom end of the shuttle peg feeding push block, one end of the connecting swing rod is connected with a third speed reduction motor, and the third speed reduction motor is arranged on the back face of the base plate.

Furthermore, the winding main transmission mechanism comprises a main transmission shaft arranged in a shaft sleeve and a bearing on the substrate, the main transmission shaft is connected with a winding motor through a belt to rotate, and the winding motor is arranged on the back of the substrate;

the front end of the main transmission shaft is sleeved with a first rubber sleeve, a telescopic sleeve shuttle spindle shaft is arranged in the main transmission shaft, a connecting cylinder for driving the sleeve shuttle spindle is arranged at the rear end of the sleeve shuttle spindle, the connecting cylinder is arranged on a fixed seat at the rear of the main transmission shaft, a thread quantity control swing rod is arranged on the right side of the main transmission shaft, the thread quantity control swing rod is arranged on a third sliding plate, the third sliding plate is connected to a second sliding block on the back of the base plate, and the second sliding block is connected with a third pushing cylinder;

the utility model discloses a take-up device, including a base plate, a final drive shaft, a gear, a semi-tooth disc, a double-shaft connecting rod, a first slide block, a second slide block, a third slide block, a fourth drive motor, a third slide block, a fourth drive motor, a fourth slide block, a fourth drive motor, a fourth slide.

Furthermore, the winding auxiliary mechanism comprises a first double-shaft sliding rod arranged on the substrate, a moving sliding block is arranged on the first double-shaft sliding rod, a front sliding block and a rear sliding block are arranged on the moving sliding block, the moving sliding block is driven by a rear motor to move left and right in a matching manner through a rack, the front sliding block and the rear sliding block are driven by a fifth driving motor to move front and back, and the front sliding block and the rear sliding block are connected with a support plate.

Furthermore, a rotating shaft connected with a bearing sleeve is installed on one side of the support plate, a first hollow shaft is connected to the front end of the rotating shaft, a second hollow shaft is arranged in the first hollow shaft, a shuttle pushing mandrel is inserted in the second hollow shaft in a penetrating mode, a second rubber sleeve is sleeved at the front end of the first hollow shaft, a second double-shaft sliding rod is arranged on the support plate, a sliding block is sleeved on the second double-shaft sliding rod and driven by a third cylinder, the sliding block is connected with a second cylinder, a pushing block is arranged on the second cylinder, a wire guide needle is installed on the pushing block, and one end of the wire guide needle penetrates through the sliding block.

Furthermore, a wire clamping pliers and a wire cutting knife are arranged on one side, located on the bearing sleeve, of the support plate, the wire clamping pliers and the wire cutting knife are fixed on the support plate in parallel, the wire clamping pliers and the wire cutting knife are connected with push rods respectively, and the push rods are connected with pushing cylinders.

Further, the yarn passing system comprises a yarn tray, a first yarn passing rod, a bracket, a tension regulator, a yarn breakage detection swing rod and a second yarn passing rod, wherein the yarn breakage detection swing rod is connected with the first yarn passing rod; the yarn tray is located below the base plate, the tension regulator and the first threading wire are assembled on the support, and the broken wire detection swing rod and the second threading wire are respectively located on one side of the support.

The invention has the beneficial effects that:

the invention realizes the full-automatic bottom thread replacing device for the embroidery machine, the structures are tightly matched together through a winding system, a thread loading finger mechanism, a bobbin replacing mechanism, a thread pulling mechanism and a bobbin changing mechanism according to the frame structure and the space of the embroidery machine, the full-automatic bottom thread replacing device for the embroidery machine is formed, is arranged on a linear track arranged below the frame and the bottom thread working positions of the embroidery machine, and is horizontally moved to the working positions needing replacing the bottom threads of the embroidery machine along the plurality of bottom thread working positions of the embroidery machine, the bottom thread replacing work of the embroidery machine is realized, the mode of manual operation at present is replaced, the embroidery intellectualization is realized, one worker can operate a plurality of multi-head overlong embroidery machines, and the operation difficulty and the labor input are greatly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view illustrating a fully automatic bobbin thread changing apparatus of an embroidery machine according to an embodiment of the present invention;

fig. 2 is a partial front view of an embroidery machine full-automatic bobbin thread changing device according to an embodiment of the present invention;

fig. 3 is a rear view of a full automatic bobbin thread changing device of an embroidery machine according to an embodiment of the present invention;

FIG. 4 is a first schematic view of a bobbin case changing mechanism of the full-automatic bobbin thread changing device of the embroidery machine according to the embodiment of the invention;

FIG. 5 is a second schematic view of a bobbin case changing mechanism of the full-automatic bobbin thread changing device of the embroidery machine according to the embodiment of the invention;

fig. 6 is a first schematic diagram of a bobbin replacing mechanism of the full-automatic bobbin thread replacing device of the embroidery machine according to the embodiment of the invention;

FIG. 7 is a second schematic diagram of a bobbin replacing mechanism of the full-automatic bobbin thread replacing device of the embroidery machine according to the embodiment of the invention;

FIG. 8 is a first schematic view of a winding system of the full-automatic bobbin thread changing device of the embroidery machine according to the embodiment of the invention;

FIG. 9 is a second schematic view of a winding system of the full-automatic bobbin thread changing device of the embroidery machine according to the embodiment of the invention;

fig. 10 is a first station schematic diagram of a full-automatic bobbin thread changing device of an embroidery machine according to an embodiment of the invention, wherein: A. a rotating shuttle mounting body; B. a rotating shuttle; C. a bobbin case clamping groove; D. a rotating shuttle central shaft; E. a bobbin case center clamping groove; F. winding the bobbin; G. a bobbin inner hub; H. a bobbin hole; I. a wire spring; J. a bobbin case kicker; K. a bobbin case;

FIG. 11 is a second schematic diagram of a station of the full-automatic bottom line replacing device of the embroidery machine according to the embodiment of the invention; in the figure: l, clamping strips; m, spring steel sheets; n, a wire inlet notch; p, bobbin winding area.

In the figure:

1. a substrate; 2. a bobbin case changing mechanism; 3. a winding main transmission mechanism; 4. a wire loading finger mechanism; 5. a bobbin replacing mechanism; 7. a wire passing system; 9. a wire pulling mechanism; 10. a sliding seat; 11. a winding auxiliary mechanism; 12. a shuttle peg feeding mechanism; 13. circulating the material tray; 14. a driven wheel; 15. a driving wheel; 16. clamping the wire clamping head; 17. clamping the wire clamping head downwards; 18. hooking and swinging the fork; 19. a bobbin chute; 20. a first slider; 21. a swing rod; 22. a shuttle peg pushing block is sent; 23. connecting the swing rod; 24. a linear quantity control swing rod; 25. a second drive motor; 26. a second lead screw; 29. a central positioning shaft; 30. a card slot; 31. a central shaft; 32. a vacuum generator; 33. a third drive motor; 34. a second reduction motor; 35. a fourth reduction motor; 36. a second push cylinder; 37. adjusting the cylinder; 38. a third push cylinder; 39. connecting a cylinder; 40. a fifth reduction motor; 41. a winding motor; 42. a fourth drive motor; 43. a fifth drive motor; 44. a rear motor; 45. a half-toothed disc; 46. a rack; 48. a first reduction motor; 49. a third reduction motor; 50. a first vertical plate; 51. a first drive motor; 52. a first lead screw; 53. a slide rail; 54. a first slide plate; 55. a first cylinder; 56. a second slide plate; 57. a support bar; 58. a bushing; 59. a thread cutting blade; 60. a buffer spring; 61. a connecting shaft; 62. mounting a plate; 63. positioning the clamping groove; 64. front and rear slide rails; 65. a first arcuate jaw; 66. a one-way cylinder; 67. a connecting rod; 70. a first slide bar; 71. a second slide bar; 72. a slide base; 73. a biaxial cylinder; 74. a support plate; 75. a main drive gear; 76. a driven gear; 77. a first push cylinder; 78. pushing the connecting rod; 79. a second arcuate jaw; 80. placing the plate; 81. a coupling shaft; 83. a shaft sleeve; 84. a motor; 85. upper pliers; 86. a connecting frame; 87. passing steel sheets; 88. a lower clamp; 89. pushing the one-way cylinder; 91. a bobbin positioning sleeve; 92. fastening a bolt; 93. a swing link; 94. a push rod; 95. a bearing; 96. a first rubber sleeve; 97. a tension adjuster; 98. a broken wire detection swing rod; 99. a second pass line; 100. a first pass line; 101. a shuttle sleeving mandrel; 102. a main drive shaft; 103. a fixed seat; 104. a third slide plate; 105. a second slider; 106. wire installation is performed; 107. a biaxial connecting rod; 108. an open neck; 109. a fourth slider; 110. a gear; 111. a first biaxial slipper bar; 112. a front slider and a rear slider; 115. a moving slide block; 116. a mounting plate; 117. a slider; 118. a guide wire needle; 119. a push block; 120. a second cylinder; 121. a third cylinder; 128. a shuttle ejecting mandrel; 129. a second hollow shaft; 130. a second rubber sleeve; 131. a first hollow shaft; 132. a rotating shaft; 135. a bearing housing; 136. a second dual-axis slide bar; 137. a yarn tray; 138. a support; 139. wire clamping pliers; 140. a thread cutter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

According to the embodiment of the invention, the full-automatic bottom line changing device of the embroidery machine is provided.

As shown in fig. 1-11, the full-automatic bobbin thread changing device for an embroidery machine according to the embodiment of the invention comprises a guide rail and a base plate 1 which are assembled on a frame, wherein the base plate 1 is matched with a motor through a sliding seat 10 to realize that the base plate 1 horizontally moves on the guide rail, and is characterized in that a winding system, a thread loading finger mechanism 4, a bobbin replacing mechanism 5, a thread pulling mechanism 9 and a bobbin changing mechanism 2 are respectively assembled on the base plate 1, wherein the winding system comprises a winding main transmission mechanism 3, a winding auxiliary mechanism 11, a bobbin feeding mechanism 12 and a thread passing system 7, and the bobbin replacing mechanism 5 and the thread pulling mechanism 9 are respectively positioned between the winding main transmission mechanism 3 and the bobbin changing mechanism 2.

The bobbin replacing mechanism 2 comprises a circulating material tray 13 assembled on the base plate 1, the circulating material tray 13 rotates through a third driving motor 33 assembled on the back of the base plate 1, a first vertical plate 50 assembled on the base plate 1 is arranged on one side of the circulating material tray 13, a sliding rail 53 and a first screw rod 52 are arranged on the first vertical plate 50, the first screw rod 52 is connected with a first driving motor 51, a first sliding plate 54 is movably connected on the sliding rail 53 and the first screw rod 52, a front sliding rail 64 and a rear sliding rail 64 which can move back and forth are arranged on the first sliding plate 54, a second sliding plate 56 is connected on the front sliding rail 64 and the rear sliding rail 64, and a first cylinder 55 is used for connecting the first sliding plate 54 and the second sliding plate 56 to drive the second sliding plate 56 to move;

second slide 56 upper end is through fixed axle joint support pole 57, bushing 58 and connecting axle 61 are installed to bracing piece 57 upper end, connecting axle 61 one end is connected with mounting panel 62, positioning slot 63 is installed to the mounting panel 62 front end, install buffer spring 60 between mounting panel 62 and the bushing 58, mounting panel 62 the top is equipped with tangent line blade 59, first arc claw 65 is installed on the right side on the mounting panel, one-way cylinder 66 is installed to mounting panel one side, one-way cylinder 66 front end sets up the first arc claw 65 of connecting rod 67 drive and rotates.

The bobbin replacing mechanism 5 comprises a first sliding rod 70, a second sliding rod 71 and a second sliding rod 26 which are assembled on the base plate 1, one end of the second sliding rod 26 is connected with a second driving motor 25, sliding seats 72 are arranged on the first sliding rod 70 and the second sliding rod 71, a double-shaft cylinder 73 is arranged on each sliding seat 72, one end of each double-shaft cylinder 73 is connected with a supporting plate 74, a shaft sleeve 83 is arranged at the upper end of each supporting plate 74, a driven gear 76 is arranged at one end of each shaft sleeve, a connecting shaft 81 is inserted in the middle of each shaft sleeve in a penetrating manner, a motor 84 is arranged below each shaft sleeve, a main transmission gear 75 is arranged on each motor 84, and the main transmission gear 75 is meshed with the driven gear 76;

the improved structure of the wire drawing machine is characterized in that one end of the connecting shaft 81 is connected with a placing plate 80, a connecting frame 86 is arranged on the left side of the placing plate 80, an upper clamp 85 and a lower clamp 88 which are meshed with each other through teeth are installed at the front end of the connecting frame 86, a steel sheet 87 in a straight line is installed at the front end of the upper clamp 85, a pushing one-way cylinder 89 is connected to the rear end of the upper clamp 85, a second arc-shaped claw 79 is installed on the upper right side of the placing plate 80, a pushing connecting rod 78 is installed below the second arc-shaped claw 79, and the pushing connecting rod 78 is connected with a.

The thread pulling mechanism 9 comprises a bobbin positioning shaft sleeve 91 arranged on the base plate 1, a telescopic central positioning shaft 29 of the bobbin is arranged in the bobbin positioning shaft sleeve 91, the central positioning shaft 29 is connected with an adjusting cylinder 37, the adjusting cylinder 37 is arranged on the back of the base plate 1, a thread hooking swing fork 18 which swings left and right is arranged below the bobbin positioning shaft sleeve 91, one end of the thread hooking swing fork 18 is connected with a fourth speed reducing motor 35, and the fourth speed reducing motor 35 is arranged on the back of the base plate 1;

the left side of the shuttle peg positioning shaft sleeve 91 is respectively provided with a thread clamping head upper clamp 16 and a thread clamping head lower clamp 17, the lower clamp 17 of the thread clamping head is connected with a swing rod 21 through a first slide block 20, the swing rod 21 is connected with a first speed reducing motor 48, the first speed reducing motor 48 is arranged on the back surface of the base plate 1, the right side of the shuttle peg positioning shaft sleeve 91 is provided with a driving wheel 15 driven by a second speed reducing motor 34, the second speed reducing motor 34 is arranged on the back surface of the base plate 1, the vacuum generator 32 is arranged on the right side of the driving wheel 15, the vacuum generator is arranged on the base plate 1, a swinging connecting rod 93 is arranged at the right upper part of the shuttle peg positioning shaft sleeve 91, a clamping bolt 92 for clamping the shuttle peg is arranged at the left end of the swinging connecting rod 93, a driven wheel 14 is arranged at the right end of the swinging connecting rod 93, the center of the swing link 93 is connected to a push rod 94 on the back of the base plate 1 through a rotating shaft, and the push rod 94 is connected to the second pushing cylinder 36.

The left side of the bobbin positioning shaft sleeve 91 is located on the base plate 1, a bobbin slide 19 is arranged on the base plate 1, one end of the bobbin slide 19 is close to the bobbin positioning shaft sleeve 91, a bobbin conveying push block 22 is arranged at the bottom end of the bobbin slide 19, a connecting swing rod 23 is arranged at the bottom end of the bobbin conveying push block 22, one end of the connecting swing rod 23 is connected with a third speed reducing motor 49, and the third speed reducing motor 49 is installed on the back face of the base plate 1.

The winding main transmission mechanism 3 comprises a main transmission shaft 102 arranged in a shaft sleeve and a bearing 95 on the substrate 1, the main transmission shaft 102 is connected with a winding motor 41 through a belt to rotate, and the winding motor 41 is arranged on the back of the substrate 1;

the front end of the main transmission shaft 102 is sleeved with a first rubber sleeve 96, a telescopic sleeve shuttle peg shaft 101 is arranged in the main transmission shaft 102, a connecting cylinder 39 for driving the sleeve shuttle peg shaft 101 is arranged at the rear end of the sleeve shuttle peg shaft 101, the connecting cylinder 39 is arranged on a fixed seat 103 behind the main transmission shaft 102, a thread quantity control swing rod 24 is arranged on the right side of the main transmission shaft 102, the thread quantity control swing rod 24 is arranged on a third sliding plate 104, the third sliding plate 104 is connected to a second sliding block 105 on the back of the base plate 1, and the second sliding block 105 is connected with a third pushing cylinder 38;

the left side of the main transmission shaft 102 is provided with a thread loading finger 106 for loading a thread end into a bobbin case, the thread loading finger 106 penetrates through the base plate 1 through a double-shaft connecting rod 107 and is inserted into the half-tooth disk 45, the half-tooth disk 45 is concentric with the main transmission shaft 102, the half-tooth disk 45 is driven to rotate by a fifth speed reduction motor 40 and a gear 110, the fifth speed reduction motor 40 is installed on the back side of the base plate 1 between the winding motor 41 and the main transmission shaft 102, one end of the double-shaft connecting rod 107 is clamped into an opening clamping groove 108, the opening clamping groove 108 is connected with a fourth sliding block 109, and the fourth sliding block 109 is connected and driven through a fourth driving motor 42.

The winding auxiliary mechanism 11 includes a first biaxial sliding rod 111 installed on the substrate 1, a moving slider 115 is installed on the first biaxial sliding rod 111, a front slider 112 and a rear slider 112 are installed on the moving slider 115, the moving slider 115 is driven by a rear motor 44 to move left and right in cooperation with a rack 46, the front slider 112 and the rear slider 112 are driven by a fifth driving motor 43 to move front and back, and the front slider 112 and the rear slider 112 are connected with a support plate 116.

The yarn guide device comprises a support plate 116, a rotating shaft 132 connected with a bearing sleeve 135 is mounted on one side of the support plate 116, a first hollow shaft 131 is connected to the front end of the rotating shaft 132, a second hollow shaft 129 is arranged in the first hollow shaft 131, a shuttle ejection mandrel 128 penetrates through the second hollow shaft 129, a second rubber sleeve 130 is sleeved on the front end of the first hollow shaft 131, a second double-shaft sliding rod 136 is arranged on the support plate 116, a sliding block 117 is sleeved on the second double-shaft sliding rod 136, the sliding block 117 is driven by a third cylinder 121, the sliding block 117 is connected with a second cylinder 120, a pushing block 119 is arranged on the second cylinder 120, a yarn guide needle 118 is mounted on the pushing block 119, and one end of the yarn guide needle 118 penetrates through the sliding block 117.

The wire clamping pliers 139 and the wire cutting knife 140 are arranged on one side, located on the bearing sleeve 135, of the support plate 116, the wire clamping pliers 139 and the wire cutting knife 140 are fixed on the support plate 116 in parallel, the wire clamping pliers and the wire cutting knife are connected with push rods respectively, and the push rods are connected with pushing cylinders.

The threading system 7 comprises a yarn tray 137, a first threading 100, a bracket 138, a tension adjuster 97, a broken yarn detection swing rod 98 and a second threading 99, wherein; the yarn tray 137 is located below the base plate 1, the tension adjuster 97 and the first threading 100 are assembled on the bracket 138, and the broken yarn detection swing rod 98 and the second threading 99 are respectively located on one side of the bracket 138.

By means of the technical scheme, the full-automatic bobbin changing device for the embroidery machine is formed by tightly matching a plurality of structures through the winding system, the thread loading finger mechanism, the bobbin replacing mechanism, the thread pulling mechanism and the bobbin replacing mechanism according to the frame structure and the space of the embroidery machine, is arranged on a linear track arranged below the frame of the embroidery machine and the bobbin thread working positions, and is horizontally moved to the working positions needing to replace the bobbin threads along the plurality of bobbin thread working positions of the embroidery machine, so that the bobbin thread replacing work of the embroidery machine is realized, the current manual operation mode is replaced, the embroidery intellectualization is realized, a worker can operate a plurality of multi-head overlong embroidery machines, and the operation difficulty and the labor input are greatly reduced.

In addition, as shown in fig. 10-11, in a specific use, for the above-mentioned stations, several stations are horizontally arranged, and the stations include a rotating shuttle installation body and a rotating shuttle, wherein a rotating shuttle central shaft and a bobbin case clamping groove are arranged in the rotating shuttle, and for the bobbin case, the bobbin case is provided with a wire spring, a bobbin case poking piece, a clamping strip and a wire inlet notch.

And for the circulation material tray 13, the circulation material tray 13 is of a circular structure, a central shaft 31 and clamping grooves 30 for placing the bobbin case are annularly and equidistantly arranged on the circulation material tray 13, and the central shaft 31 and the clamping grooves 30 are at least six groups.

In addition, specifically, as shown in fig. 4-5, in application, the bobbin case changing mechanism 2 previously grips the bobbin case from the rotating shuttle of the station, at this time, the bobbin case is internally provided with the bobbin case with the remaining thread, the first vertical plate 50 in the bobbin case changing mechanism 2 is adjusted in the vertical direction by the first sliding plate 54 under the action of the sliding rail 53 and the first lead screw 52, the first cylinder 55 pushes the second sliding plate 56 to be adjusted in the front-back direction along the front-back sliding rail 64, so as to grip the bobbin case of the station, the first arc-shaped claw 65 is used for gripping the bobbin case in the bobbin case under the action of the one-way cylinder 66 and the connecting rod 67, the bobbin case is gripped by the positioning clamping groove 63 installed at the front end of the mounting plate 62, and the bobbin case changing mechanism 2 places the gripped bobbin case in the circulating material tray 13, so as to facilitate the operation of the bobbin case changing mechanism 5.

In addition, as shown in fig. 2-7, the specific bobbin replacing mechanism 5, as shown in fig. 2, realizes the horizontal movement of the bobbin replacing mechanism 5 to the left side of the circulating material tray 13 through the sliding base 72 in cooperation with the first sliding rod 70, the second sliding rod 71 and the second screw rod 26, at this time, the second arc-shaped claw 79 on the bobbin replacing mechanism 5 is driven by the first pushing cylinder 77 to grab the bobbin case bobbin in the circulating material tray 13, the upper clamp 85 and the lower clamp 88 hold the bobbin case under the pushing of the pushing one-way cylinder 89, the double-shaft cylinder 73 retreats away from the circulating material tray 13, the bobbin replacing mechanism 5 with the bobbin case and the bobbin moves to the concentric position of the bobbin positioning shaft sleeve 91 of the thread pulling mechanism 9, the back and forth adjustment of the supporting plate 74 in the bobbin replacing mechanism 5 is realized under the action of the double-shaft cylinder 73, the motor 84 drives the main transmission gear 75 and the driven gear 76 to realize the rotation of the connecting shaft, and the connecting bracket 86 under the, when the bobbin is rotated to the upward position of the bobbin case gap, the upper clamp 85 and the lower clamp 88 continue to clamp the bobbin case, at the moment, the bobbin sent by the bobbin replacing mechanism 5 is clamped on the front end surface of the bobbin positioning shaft sleeve 91 of the bobbin pulling mechanism 9 by the clamping bolt 92 positioned on the left side of the swinging connecting rod 93 in the bobbin pulling mechanism 9, the bobbin in the bobbin case is loosened by the second arc-shaped claw 79, and the bobbin is convenient to withdraw from the bobbin case and is left at the front end of the bobbin positioning shaft sleeve 91 when the bobbin replacing mechanism 5 retreats;

at this time, the bobbin replacing mechanism 5 moves to the left side through the bobbin case clamped by the upper clamp 85 and the lower clamp 88 to the concentric position of the main transmission shaft 102 of the thread loading finger mechanism 4, the bobbin replacing mechanism 5 is pushed forwards by the double-shaft cylinder 73 to be sleeved into the bobbin wound by the bobbin sleeving shaft 101 before the main transmission shaft 102, the bobbin is kept in the bobbin case by the second arc-shaped claw 79 in the bobbin replacing mechanism 5, the bobbin is rotationally matched with the motor 84 mechanical arm in the bobbin replacing mechanism 5 through the rotation and the front and back expansion of the thread loading finger 106, the yarn is loaded in the spring sheet and the wire spring of the bobbin case, the thread end from one end of the thread passing system is clamped by the thread clamping clamp 139 on the auxiliary winding mechanism 11 to facilitate the next winding, the yarn connected to the bobbin case is cut by the thread cutting knife 140 on the auxiliary winding mechanism 11, the double-shaft cylinder 73 retreats, the bobbin replacing mechanism 5 carries the bobbin case with the bobbin case to move to the left side of the circulating material tray 13, the bobbin case and the bobbin are placed at the appointed position of a circulating material tray 13, after the bobbin is taken out and withdrawn backwards by a bobbin replacing mechanism 5, a thread end between the bobbin and the bobbin case is lifted to the upper end of the bobbin by a thread end upper clamp 16 and a thread end lower clamp 17 and is clamped, the thread end clamped on the bobbin case is pulled out while the bobbin replacing mechanism 5 moves leftwards, the thread end between the bobbin and the thread end upper clamp 16 and the thread end lower clamp 17 is hooked by a thread hooking swinging fork 18, the thread is swung and conveyed to a suction inlet of a vacuum generator 32 between a driving wheel 15 and a driven wheel 14, the driven wheel 14 presses the thread, the thread end is loosened by separating the thread end upper clamp 16 and the thread end lower clamp 17, the thread end is sucked by the vacuum generator 32, the driving wheel thread pulling 15 and the driven wheel 14 rotate in a matched mode, the residual thread in the bobbin is conveyed to the suction inlet of the vacuum generator 32 to clean the residual thread, and the bobbin center shaft 29 in the bobbin pulling mechanism 9 is withdrawn by an air cylinder 37, the bobbin with the rest thread removed falls to the detection position in the bobbin slide way 19 through inertia, the stay wire motor stops working, when the bobbin replacing mechanism 5 is well assembled with the bobbin and moves rightwards, the bobbin delivering mechanism 12 pushes the bobbin positioned at the lowest part to the concentric position of a main transmission shaft 102 of the thread assembling finger mechanism 4 and a bobbin sleeving shaft 101 through a bobbin delivering push block 22;

in addition, the thread passing system 7 connects the yarn to the winding auxiliary mechanism 11 through the yarn tray 137, the first thread passing 100, the bracket 138, the tension adjuster 97, the thread breakage detection swing link 98 and the second thread passing 99, the winding auxiliary mechanism 11 extends to the right thread clamping pincers 139 through the surface of the second rubber sleeve 130 at the front end of the first hollow shaft 131 in the winding auxiliary mechanism 11 through the thread guide needle 118, and the sliding block 117 is matched and can be adjusted in a stretching mode through the third cylinder 121. After the bobbin feeding mechanism 12 feeds the bobbin to the concentric position of the main transmission shaft 102 of the thread loading finger mechanism 4, the winding auxiliary mechanism 11 moves from the left to the concentric position of the winding main transmission shaft 102 and the first hollow shaft 131 of the winding auxiliary mechanism 11, the fifth driving motor 43 drives the winding auxiliary mechanism 11 to move forward through the lead screw, the bobbin ejecting mandrel 128 ejects to the bobbin hole to keep concentric, the second hollow shaft 129 is matched with the main transmission shaft 102 to clamp the bobbin, the first hollow shaft 131 clamps the thread end between the thread guiding needle 118 and the thread clamping pincers 139 on the surface of the bobbin needing winding through the second rubber sleeve 130, and when the bobbin is fully wound, the thread control swing rod 24 is used for determining to stop winding. The winding assist mechanism 11 retreats and moves leftward to a predetermined position, and the position is made available to the bobbin replacing mechanism 5 to load the bobbin.

In addition, when the automatic bottom thread changing device is used, the working time of a single station is about 15 seconds, four bottom threads can be changed every minute, according to the requirements of an embroidery factory, every 20 working stations are provided with a set of full-automatic bottom thread changing system which is most suitable, for example, a 100-head embroidery machine, only five sets of systems are needed, except for normal requirements, only 25 bobbin cases are needed for standby bobbin cases, 40 bobbin cores can meet the requirements that the bottom thread changing system which is tried in the current market needs more than 200 standby bobbin cases, and meanwhile, the problem that a plurality of machines are manually operated is completely solved.

In summary, according to the above technical scheme of the present invention, the full-automatic bobbin-changing device for the embroidery machine is formed by tightly matching a plurality of structures through a winding system, a thread-loading finger mechanism, a bobbin-changing mechanism, a thread-pulling mechanism and a bobbin-changing mechanism according to the frame structure and space of the embroidery machine, and is installed on a linear rail arranged below the frame and the working positions of the bobbin threads of the embroidery machine, and horizontally moves to the working positions where the bobbin threads need to be changed along the working positions of the bobbin threads of the embroidery machine, so as to realize bobbin thread changing work of the embroidery machine.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The full-automatic bobbin changing device of the embroidery machine comprises a guide rail and a base plate (1) which are assembled on a rack, wherein the base plate (1) is matched with a motor through a sliding seat (10) to realize the horizontal movement of the base plate (1) on the guide rail, and is characterized in that a winding system, a thread loading finger mechanism (4), a bobbin replacing mechanism (5), a thread pulling mechanism (9) and a bobbin changing mechanism (2) are respectively assembled on the base plate (1), wherein the winding system comprises a winding main transmission mechanism (3), a winding auxiliary mechanism (11), a bobbin feeding mechanism (12) and a thread passing system (7), and the bobbin replacing mechanism (5) and the thread pulling mechanism (9) are respectively positioned between the winding main transmission mechanism (3) and the bobbin changing mechanism (2);

the bobbin case changing mechanism (2) comprises a circulating material tray (13) assembled on the base plate (1), the circulating material tray (13) realizes the rotation of the circulating material tray (13) through a third driving motor (33) assembled on the back surface of the base plate (1), a first vertical plate (50) assembled on the base plate (1) is arranged on one side of the circulating material tray (13), the first vertical plate (50) is provided with a slide rail (53) and a first screw rod (52), the first screw rod (52) is connected with a first driving motor (51), the slide rail (53) and the first screw rod (52) are movably connected with a first sliding plate (54), a front and a rear sliding rails (64) which can move back and forth are arranged on the first sliding plate (54), the front sliding rail and the rear sliding rail (64) are connected with a second sliding plate (56), and the first sliding plate (54) and the second sliding plate (56) are connected through a first cylinder (55) to drive the second sliding plate (56) to move;

the upper end of the second sliding plate (56) is connected with the supporting rod (57) through a fixed shaft, the upper end of the supporting rod (57) is provided with a bushing (58) and a connecting shaft (61), one end of the connecting shaft (61) is connected with a mounting plate (62), the front end of the mounting plate (62) is provided with a positioning clamping groove (63), a buffer spring (60) is arranged between the mounting plate (62) and the bushing (58), the uppermost part of the mounting plate (62) is provided with a tangent blade (59), the right side of the mounting plate is provided with a first arc-shaped claw (65), one-way air cylinders (66) are arranged on one side of the mounting plate, and the front ends of the one-way air cylinders (66) are provided;

the bobbin replacing mechanism (5) comprises a first sliding rod (70), a second sliding rod (71) and a second screw rod (26) which are assembled on the base plate (1), one end of the second screw rod (26) is connected with a second driving motor (25), sliding seats (72) are arranged on the first sliding rod (70) and the second sliding rod (71), a double-shaft cylinder (73) is installed on each sliding seat (72), one end of each double-shaft cylinder (73) is connected with a supporting plate (74), a shaft sleeve (83) is arranged at the upper end of each supporting plate (74), a driven gear (76) is installed at one end of each shaft sleeve, a connecting shaft (81) is inserted in the middle of each shaft sleeve, a motor (84) is installed below each shaft sleeve, a main transmission gear (75) is installed on each motor (84), and the main transmission gear (75) is meshed with the driven gear (76);

one end of the connecting shaft (81) is connected with a placing plate (80), a connecting frame (86) is arranged on the left side of the placing plate (80), an upper clamp (85) and a lower clamp (88) which are meshed with each other through teeth are mounted at the front end of the connecting frame (86), a steel sheet (87) in a line is mounted at the front end of the upper clamp (85), a pushing one-way cylinder (89) is connected at the rear end of the upper clamp (85), a second arc-shaped claw (79) is mounted on the upper right side of the placing plate (80), a pushing connecting rod (78) is mounted below the second arc-shaped claw (79), and the pushing connecting rod (78) is connected with a first pushing cylinder (77);

the thread pulling mechanism (9) comprises a shuttle peg positioning shaft sleeve (91) arranged on the base plate (1), a central positioning shaft (29) of a telescopic shuttle peg is arranged in the shuttle peg positioning shaft sleeve (91), the central positioning shaft (29) is connected with an adjusting cylinder (37), the adjusting cylinder (37) is installed on the back of the base plate (1), a thread hooking pendulum fork (18) capable of swinging left and right is arranged below the shuttle peg positioning shaft sleeve (91), one end of the thread hooking pendulum fork (18) is connected with a fourth speed reducing motor (35), and the fourth speed reducing motor (35) is installed on the back of the base plate (1);

the left side of the shuttle peg positioning shaft sleeve (91) is respectively provided with a thread clamping head upper clamp (16) and a thread clamping head lower clamp (17), the thread clamping head lower clamp (17) is connected with a swing rod (21) through a first sliding block (20), the swing rod (21) is connected with a first speed reducing motor (48), the first speed reducing motor (48) is installed on the back of the base plate (1), the right side of the shuttle peg positioning shaft sleeve (91) is provided with a driving wheel (15) driven by a second speed reducing motor (34), the second speed reducing motor (34) is installed on the back of the base plate (1), the right side of the driving wheel (15) is provided with a vacuum generator (32), the vacuum generator is installed on the base plate (1), the right upper part of the shuttle peg positioning shaft sleeve (91) is provided with a swinging connecting rod (93), the left end of the swinging connecting rod (93) is provided with a clamping bolt (92) for clamping the shuttle peg, and the right end of the, the center of the swing connecting rod (93) is connected to a push rod (94) on the back of the base plate (1) through a rotating shaft, and the push rod (94) is connected with a second pushing cylinder (36).

2. The full-automatic bobbin thread changing device of the embroidery machine according to claim 1, wherein a bobbin slide way (19) is arranged on the left side of the bobbin positioning shaft sleeve (91) and on the base plate (1), one end of the bobbin slide way (19) is close to the bobbin positioning shaft sleeve (91), a bobbin feeding push block (22) is arranged at the bottom end of the bobbin slide way (19), a connecting swing rod (23) is arranged at the bottom end of the bobbin feeding push block (22), one end of the connecting swing rod (23) is connected with a third speed reducing motor (49), and the third speed reducing motor (49) is installed on the back side of the base plate (1).

3. The full-automatic bobbin thread replacing device of the embroidery machine according to claim 1, wherein the winding main transmission mechanism (3) comprises a main transmission shaft (102) arranged in a shaft sleeve and a bearing (95) on the base plate (1), the main transmission shaft (102) is connected with a winding motor (41) through a belt to rotate, and the winding motor (41) is arranged on the back of the base plate (1);

a first rubber sleeve (96) is sleeved at the front end of the main transmission shaft (102), a telescopic sleeve shuttle mandrel (101) is arranged in the main transmission shaft (102), a connecting cylinder (39) for driving the sleeve shuttle mandrel (101) is arranged at the rear end of the sleeve shuttle mandrel (101), the connecting cylinder (39) is installed on a fixed seat (103) behind the main transmission shaft (102), a linear quantity control swing rod (24) is arranged on the right side of the main transmission shaft (102), the linear quantity control swing rod (24) is installed on a third sliding plate (104), the third sliding plate (104) is connected to a second sliding block (105) on the back of the base plate (1), and the second sliding block (105) is connected with a third pushing cylinder (38);

the thread end loading device is characterized in that a thread loading finger (106) for loading a thread end into a bobbin case is arranged on the left side of the main transmission shaft (102), the thread loading finger (106) penetrates through the double-shaft connecting rod (107) and is inserted into the semi-toothed disc (45) of the base plate (1), the semi-toothed disc (45) is concentric with the main transmission shaft (102), the semi-toothed disc (45) is driven to rotate by the fifth speed reducing motor (40) and the gear (110), the fifth speed reducing motor (40) is installed on the back face of the base plate (1) between the winding motor (41) and the main transmission shaft (102), one end of the double-shaft connecting rod (107) is clamped into the opening clamping groove (108), the opening clamping groove (108) is connected with the fourth sliding block (109), and the fourth sliding block (109) is connected and driven by the fourth driving motor (.

4. The full-automatic bobbin thread changing device of the embroidery machine according to claim 1, wherein the winding auxiliary mechanism (11) comprises a first biaxial sliding rod (111) installed on the base plate (1), a moving slider (115) is installed on the first biaxial sliding rod (111), a front slider and a rear slider (112) are arranged on the moving slider (115), the moving slider (115) is driven to move left and right by a rear motor (44) in a matching manner through a rack (46), the front slider and the rear slider (112) are driven to move back and forth through a fifth driving motor (43), and the front slider and the rear slider (112) are connected with a support plate (116).

5. The full-automatic bobbin thread replacing device of the embroidery machine according to claim 4, wherein a rotating shaft (132) connected with a bearing sleeve (135) is installed at one side of the support plate (116), a first hollow shaft (131) is connected to the front end of the rotating shaft (132), a second hollow shaft (129) is installed in the first hollow shaft (131), a shuttle ejecting mandrel (128) is inserted in the second hollow shaft (129), a second rubber sleeve (130) is sleeved at the front end of the first hollow shaft (131), a second double-shaft sliding rod (136) is arranged on the support plate (116), a sliding block (117) is sleeved on the second double-shaft sliding rod (136), the sliding block (117) is driven by a third cylinder (121), the sliding block (117) is connected with a second cylinder (120), a push block (119) is arranged on the second cylinder (120), and a thread guide needle (118) is installed on the push block (119), one end of the guide wire needle (118) penetrates through the sliding block (117).

6. The full-automatic bottom line replacing device of the embroidery machine according to claim 5, characterized in that a wire clamping pliers (139) and a wire cutting knife (140) are arranged on one side of the bearing sleeve (135) of the support plate (116), the wire clamping pliers (139) and the wire cutting knife (140) are fixed on the support plate (116) in parallel, the wire clamping pliers and the wire cutting knife are respectively connected with a push rod, and the push rod is connected with a pushing cylinder.

7. The full-automatic bobbin thread replacing device of the embroidery machine according to claim 1, wherein the thread passing system (7) comprises a thread tray (137), a first thread passing device (100), a bracket (138), a tension adjuster (97), a thread breakage detection swing rod (98) and a second thread passing device (99), wherein; the yarn tray (137) is located below the base plate (1), the tension adjuster (97) and the first threading wire (100) are assembled on the support (138), and the broken wire detection swing rod (98) and the second threading wire (99) are respectively located on one side of the support (138).