Five-thread overedger with adjustable tailstock

Abstract

The utility model relates to the technical field of five-thread overedgers, and discloses a five-thread overedger with an adjustable tailstock, which comprises a mounting panel, a first adjusting component, a second adjusting component, a third adjusting component and a fourth adjusting component, and the first locking assembly is arranged on the outer side of the annular sleeve and used for increasing the dismounting speed of the pay-off assembly and the pay-off assembly. Height adjustment and angle adjustment are conducted on the thread stand through the first adjusting assembly and the second adjusting assembly according to actual conditions, so that a silk thread is driven to be in a tightened state all the time, the silk thread has a more suitable thread inlet angle, sewing work of an overedger body at different heights and different angles is facilitated, and the sewing efficiency is improved. The functionality of the overedger in a special scene and the practicability of the thread stand are expanded; and by arranging the first locking assembly and the second locking assembly, disassembly and assembly of the pay-off assembly, the wire outlet assembly and the wire guide assembly are facilitated, and quick disassembly and quick assembly between the wire frame assemblies are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of five-thread overlock sewing machines, in particular to a five-thread overlock sewing machine with an adjustable tailstock. Background Art

[0002] The overlock sewing machine is also called the edge sewing machine. It can be divided into single-thread, double-thread, triple-thread, four-thread, five-thread, etc. according to the overlock stitches. Its main function is to prevent the seams of clothing from pilling. It can not only be used for edge sewing, but also for sewing T-shirts, sportswear, underwear, knitwear and other fabrics. A tail stand is required to cooperate when the overlock sewing machine is working. The tail stand generally refers to the overlock sewing machine thread stand. The thread stand can keep the silk thread neat and orderly, and avoid the overlock sewing failure caused by the silk thread entanglement, tangling and confusion.

[0003] When the existing five-thread overlock sewing machine is in use, one side of the thread rack is generally fixed, which makes it difficult for the staff to adjust the height and angle of the thread rack according to the actual situation when the overlock sewing machine is working. This is not conducive to the overlock sewing machine to sew at different heights and angles, greatly limiting the functionality of the overlock sewing machine in special scenarios and the practicality of the thread rack, and has a certain impact on the working continuity of the overlock sewing machine. Utility Model Content

[0004] The purpose of the utility model is to provide a five-thread overlock sewing machine with an adjustable tailstock to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a five-thread overlock sewing machine with an adjustable tailstock, wherein the bottom of the mounting panel is fixedly connected to the frame, the top of the mounting panel is fixedly mounted with an overlock sewing machine body, a support cylinder is vertically provided on one side of the overlock sewing machine body, a lead screw sleeve is coaxially provided inside the support cylinder, and further comprising:

[0006] A first adjustment component is provided inside the supporting cylinder for adjusting the extension length of the screw sleeve, the top of the screw sleeve is fixedly connected to a supporting column, an annular sleeve is coaxially provided on the outer side of the top of the support column and the outer side of the bottom end of the supporting cylinder, wherein two first support rods are symmetrically provided on the outer side of the annular sleeve located at the bottom, and a wire pay-off component for positioning and fixing the wire drum is provided on the top of each first support rod, and two third support rods are symmetrically provided on the outer side of the annular sleeve located at the top, and a wire guide component for guiding the wire is provided at the bottom of each third support rod;

[0007] A first locking assembly is provided on the outside of the annular sleeve for increasing the speed of disassembly and assembly of the wire pay-off assembly and the conductor assembly, a second support rod is vertically provided on the outside of the top end of the support cylinder, one end of the second support rod is fixedly connected to a fixing seat, both ends of the fixing seat are provided with fixing rods, a wire outlet assembly is provided inside the fixing rod to facilitate the orderly entry of the silk thread into the overlock sewing machine body, a second adjustment assembly is provided at one end of the fixing rod for quickly adjusting the wire entry angle of the wire outlet assembly, and a second locking assembly is provided at the other end of the second support rod for increasing the speed of disassembly and assembly of the wire outlet assembly.

[0008] The top end face of said sliding arm is fixedly provided with a toothed connecting strip which is cooperatively connected with said toothed connecting strip.

[0009] Preferably, the top end of the support cylinder and the top end of the screw sleeve are fixedly connected to annular seats, a telescopic dustproof sleeve is provided between the annular seats, the telescopic dustproof sleeve is located on the periphery of the screw sleeve, and the telescopic dustproof sleeve is respectively connected to the annular seats at both ends.

[0010] Preferably, the bottom end of the support cylinder is fixedly connected to a first threaded column, the bottom end of the first threaded column passes through the outside of the mounting panel and is screwed to a first fastening nut, and a friction gasket is provided between the first fastening nut and the mounting panel.

[0011] Preferably, the line-releasing assembly includes a second threaded column arranged at the top of the first support rod, and there are no less than three second threaded columns, and the multiple second threaded columns are equidistantly distributed along the length direction of the first support rod. A positioning hole corresponding to the second threaded column is opened on the first support rod, and the bottom end of the second threaded column passes through the outside of the positioning hole and is screwed with a second fastening nut, a rubber cover is provided at the top of the second threaded column, and a spool tray is provided under the rubber cover, and the spool tray is located outside the second threaded column. A flexible pad is installed on the top surface of the spool tray, and a frustum portion is provided on the outside of the second threaded column, and the bottom of the frustum portion is in contact with the flexible pad.

[0012] Preferably, the wire assembly includes a fourth support rod fixed to the bottom of the third support rod, and the fourth support rod is provided with no less than three wire grooves, and the plurality of wire grooves are equidistantly distributed along the length direction of the fourth support rod.

[0013] Preferably, the first locking assembly includes an extension portion arranged at both ends of the annular sleeve, a through slot is opened on one side of the extension portion, a rotating shaft is provided inside one of the through slots, and the rotating shaft is rotatably connected to the two sides of the inner wall of the through slot through bearings, a third threaded column is vertically installed on one side of the rotating shaft, one end of the third threaded column passes through the outside of the other through slot and is spirally connected to a third fastening nut, and an anti-slip block is provided on the side of the third fastening nut away from the extension portion, and the anti-slip block is fixedly installed on the third threaded column.

[0014] Preferably, the wire outlet assembly includes a guide cavity arranged inside the fixed rod, a guide rod is slidably connected to the inside of the guide cavity, and no less than three wire outlet grooves are provided on the guide rod, and multiple wire outlet grooves are equidistantly distributed along the length direction of the guide rod. A fixing groove is provided at the top of the guide rod, and a locking bolt perpendicular to the top of one end of the fixed rod is provided. A fixing groove corresponding to the locking bolt is provided at the top of the guide rod, and the threaded end of the locking bolt passes through the inside of the fixing groove.

[0015] The cam is secured to the outside of the second accommodating cavity and is adapted to engage the gears of the driver and the control gear of the driver, and the cam is secured to the outside of the second accommodating cavity with a spring.

[0016] Preferably, the second locking assembly includes a first strip plate fixed to one end of the second support rod, a fourth threaded column is vertically installed on one side of the first strip plate, a second strip plate is fixedly connected to one side of the support cylinder, a fastening nut corresponding to the fourth threaded column is provided on one side of the second strip plate, a limiting block is fixedly connected to one side of the fastening nut, a limiting groove corresponding to the limiting block is opened on the outer side of the second strip plate, the limiting block is located inside the limiting groove, and one end of the fourth threaded column passes through the second strip plate and is spirally connected to the fastening nut.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The utility model uses the first adjustment component and the second adjustment component to adjust the height and angle of the thread rack according to actual conditions, so that the silk thread is always kept taut and the silk thread has a more suitable thread entry angle, which is beneficial to the sewing work of the overlock sewing machine body at different heights and angles, and expands the functionality of the overlock sewing machine in special scenarios and the practicality of the thread rack; by providing the first locking component and the second locking component, it is convenient to carry out the disassembly and assembly of the wire pay-off component, the wire outlet component, and the wire conductor component, which is beneficial to the quick disassembly and assembly between the thread rack components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a five-thread overlock sewing machine with an adjustable tailstock provided by the present invention;

[0020] Figure 2 A schematic diagram of the fixing rod structure provided by the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the outlet assembly provided by the utility model;

[0022] Figure 4 A schematic diagram of the support cylinder structure provided by the utility model;

[0023] Figure 5 for Figure 4 A in the middle is an enlarged structural diagram;

[0024] Figure 6 for Figure 4 The enlarged structural diagram at B in the middle;

[0025] Figure 7 A schematic diagram of the first support rod structure provided by the utility model;

[0026] Figure 8 for Figure 7 The enlarged structural diagram at C in the middle;

[0027] Figure 9 A schematic diagram of the structure of the pay-off assembly provided by the utility model;

[0028] Figure 10 This is a schematic structural diagram of the second locking assembly provided by the present invention;

[0029] Figure 11 This is a schematic structural diagram of the second adjustment component provided by the utility model.

[0030] In the figure: 1. Mounting panel; 2. Frame; 3. Overlock machine body; 4. Support cylinder; 5. Screw sleeve; 6. Support column; 7. First adjustment assembly; 71. Ball screw; 72. Partition; 73. First accommodating chamber; 74. First transmission shaft; 75. Driving bevel gear; 76. Driven bevel gear; 77. Adjustment knob; 78. Guide block; 79. Guide groove; 8. Annular seat; 9. Telescopic dust cover; 10. First threaded column; 11. First fastening nut; 12. Friction washer; 13. Annular sleeve; 14. First support rod; 15. Pay-off assembly; 151. Positioning hole; 152. Second threaded column; 153. Cone portion; 154. Bobbin tray; 155. Flexible pad; 156. Second fastening nut; 157. Rubber cover; 16. First locking assembly; 161. Through slot; 162. Rotating shaft; 163. Third threaded column; 164. Extension portion; 16 5. Third fastening nut; 166. Anti-slip block; 17. Second locking assembly; 171. First strip plate; 172. Second strip plate; 173. Fourth threaded column; 174. Fastening nut; 175. Stop block; 176. Stop slot; 18. Second support rod; 19. Fixing seat; 20. Fixing rod; 21. Outlet assembly; 211. Outlet slot; 212. Guide rod; 213. Locking bolt; 214. Fixing slot; 2 15. Guide cavity; 22. Second adjustment assembly; 221. Second accommodating cavity; 222. Cone; 223. Second transmission shaft; 224. Annular slider; 225. Annular slide; 226. Limiting gear; 227. Third accommodating cavity; 228. Limiting plate; 229. Push-pull rod; 2210. Spring; 2211. Gear; 23. Third support rod; 24. Wire assembly; 241. Fourth support rod; 242. Wire trough. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-11As shown, a five-thread overlock sewing machine with an adjustable tailstock comprises a mounting panel 1, the bottom of the mounting panel 1 is fixedly connected to a frame 2, a overlock sewing machine body 3 is fixedly mounted on the top of the mounting panel 1, a support cylinder 4 is vertically provided on one side of the overlock sewing machine body 3, a lead screw sleeve 5 is coaxially provided inside the support cylinder 4, and further comprises: a first adjusting component 7 arranged inside the support cylinder 4 for adjusting the extension length of the lead screw sleeve 5, by setting the first adjusting component 7, the length of the lead screw sleeve 5 extending from the inside of the support cylinder 4 can be quickly adjusted, thereby tightening the silk thread and increasing the tension of the silk thread, which is conducive to the silk thread better entering the inside of the overlock sewing machine body 3 and cooperating with it; the top of the lead screw sleeve 5 is fixedly connected to a support column 6, the outer side of the top of the support column 6, the support An annular sleeve 13 is coaxially provided on the outer side of the bottom end of the cylinder 4, wherein two first support rods 14 are symmetrically provided on the outer side of the annular sleeve 13 located at the bottom, and a wire-paying assembly 15 for positioning and fixing the wire bobbin is provided on the top of each first support rod 14. By providing the wire-paying assembly 15, the wire bobbin can be positioned and fixed in an orderly manner, thereby avoiding the suturing failure of the overlock sewing machine body 3 caused by the entanglement, tangling and confusion of the silk thread; two third support rods 23 are symmetrically provided on the outer side of the annular sleeve 13 located at the top, and a wire guide assembly 24 for guiding the silk thread is provided at the bottom of each third support rod 23. By providing the wire guide assembly 24, the silk thread can be tightened on the one hand in cooperation with the first adjusting assembly 7, and on the other hand, it has a guiding effect on the silk thread of the wire bobbin on each wire-paying assembly 15. The first locking assembly 16 is provided on the outside of the annular sleeve 13 to increase the speed of disassembly and assembly of the wire assembly 15 and the conductor assembly 24. By providing the first locking assembly 16, the annular sleeve 13 can be quickly disassembled and assembled, which facilitates the disassembly and assembly of the wire assembly 15 and the conductor assembly 24, thereby improving practicality. A second support rod 18 is vertically provided on the outside of the top of the supporting cylinder 4, and one end of the second support rod 18 is fixedly connected to a fixing seat 19. Both ends of the fixing seat 19 are provided with fixing rods 20. The inside of the fixing rod 20 is provided with a wire outlet assembly 21 for facilitating the orderly entry of the silk thread into the overlock machine body 3. By providing the wire outlet assembly 21, the silk thread can be sorted before entering the overlock machine body 3, which is beneficial to the silk thread. Better cooperate with the overlock machine body 3; one end of the fixing rod 20 is provided with a second adjusting component 22 for quickly adjusting the line entry angle of the line outlet component 21. By setting the second adjusting component 22, the line entry angle of the silk thread on the line outlet component 21 entering the overlock machine body 3 can be adjusted, and then cooperated with the first adjusting component 7, which is beneficial to the sewing work of the overlock machine body 3 at different heights and different angles, and expands the functionality of the overlock machine in special scenarios and the practicality of the thread rack; the other end of the second support rod 18 is provided with a second locking component 17 for increasing the disassembly and assembly speed of the line outlet component 21. By setting the second locking component 17, the quick disassembly and assembly of the line outlet component 21 is realized, which is beneficial for the staff to inspect and maintain the line outlet component 21.

[0033] The first adjusting assembly 7 comprises a partition plate 72 fixed in the inner cavity of the supporting cylinder 4, a ball screw 71 arranged above the partition plate 72, the bottom end of the ball screw 71 penetrating through the partition plate 72 and being rotationally connected with the supporting cylinder 4, the top end of the ball screw 71 being screwingly connected with a screw sleeve 5, a plurality of guide blocks 78 being arranged on the outer side of the screw sleeve 5, the guide blocks 78 being arranged in parallel with the axis of the screw sleeve 5 and being distributed in the circumferential direction of the outer wall of the screw sleeve 5, one side of the guide blocks 78 being connected with the screw sleeve 5, and a guide groove 79 corresponding to the guide blocks 78 being arranged on the inner wall of the supporting cylinder 4, the guide blocks 78 being arranged in the guide groove 79, as shown in Figure 5 The guide groove 79 and the guide blocks 78 can make the lifting and sliding of the screw sleeve 5 more stable and smooth, and can limit the circumferential rotation of the screw sleeve 5, so as to avoid the failure of the wire assembly 24 caused by the rotation of the screw sleeve 5 together with the ball screw 71; one side of the inner wall of the supporting cylinder 4 is provided with a first accommodating cavity 73, the first accommodating cavity 73 is internally provided with a first transmission shaft 74, one end of the first transmission shaft 74 is fixedly connected with a driving bevel gear 75, one side of the driving bevel gear 75 is provided with a driven bevel gear 76, the driven bevel gear 76 is fixedly arranged on the ball screw 71, the driving bevel gear 75 is engaged with the driven bevel gear 76, the other end of the first transmission shaft 74 penetrates to the outside of the first accommodating cavity 73 and is fixedly connected with an adjusting knob 77, the driving bevel gear 75 is driven to rotate by the adjusting knob 77 and the first transmission shaft 74, the ball screw 71 is driven to rotate by the driving bevel gear 75 and the driven bevel gear 76, and the screw sleeve 5 is driven to lift and slide along the axis of the supporting cylinder 4, so that the height of the wire rack can be quickly adjusted according to the actual situation, the silk thread can be kept in a taut state before entering the overlock machine body 3, the tension of the silk thread is improved, and the silk thread can better enter the overlock machine body 3 and cooperate with the overlock machine body 3.

[0034] The top end of the supporting cylinder 4 and the top end of the screw sleeve 5 are fixedly connected with an annular seat 8, and an elastic dust cover 9 is arranged between the annular seats 8, the elastic dust cover 9 being arranged around the screw sleeve 5 and being connected with the annular seats 8 at both ends, as shown in Figure 2 , Figure 5 The elastic dust cover 9 can prevent dust, silk floss and other impurities in the workshop from entering the screw sleeve 5, prevent the impurities from affecting the cooperation between the screw sleeve 5 and the ball screw 71, and improve the applicability of the structure.

[0035] The bottom end of the supporting cylinder 4 is fixedly connected with a first threaded column 10, the bottom end of the first threaded column 10 penetrates to the outside of the mounting panel 1 and is screwingly connected with a first fastening nut 11, and a friction gasket 12 is arranged between the first fastening nut 11 and the mounting panel 1, as shown in Figure 2 , Figure 6As shown, the provision of the first threaded column 10 facilitates the assembly and disassembly of the support cylinder 4 , and the friction gasket 12 increases the contact area between the first fastening nut 11 and the mounting panel 1 , thereby improving the overall installation stability of the support cylinder 4 .

[0036] The pay-off assembly 15 includes a second threaded column 152 provided on the top of the first support rod 14. There are no less than three second threaded columns 152, and the plurality of second threaded columns 152 are evenly distributed along the length direction of the first support rod 14. A positioning hole 151 corresponding to the second threaded column 152 is opened on the first support rod 14. The bottom end of the second threaded column 152 passes through the outside of the positioning hole 151 and is screwed with a second fastening nut 156. The top of the second threaded column 152 is provided with a rubber cover 157. Figure 7 As shown, by setting a rubber cover 157, the lifting and lowering displacement of the thread spool is limited, which can prevent the thread spool from jumping out of the second threaded column 152 when rotating, thereby improving the stability of the sewing work; a thread spool tray 154 is provided below the rubber cover 157, and the thread spool tray 154 is located outside the second threaded column 152. A flexible pad 155 is installed on the top surface of the thread spool tray 154, and a frustum portion 153 is provided on the outside of the second threaded column 152. The bottom of the frustum portion 153 is in contact with the flexible pad 155, as shown in FIG. Figure 9 As shown, the bobbin tray 154 and the flexible pad 155 can be tightly pressed onto the first support rod 14 by utilizing the truncated cone portion 153 outside the second threaded column 152, which is convenient for placing the bobbins.

[0037] The wire assembly 24 includes a fourth support rod 241 fixed to the bottom of the third support rod 23. The fourth support rod 241 is provided with at least three wire grooves 242. The plurality of wire grooves 242 are evenly spaced along the length direction of the fourth support rod 241. Figure 2 As shown, the wire assembly 24 cooperates with the wire pay-off assembly 15 to tighten the wire on one hand and guide the wire on the spool on the other hand, which is beneficial to the subsequent wire-out work.

[0038] The first locking assembly 16 includes an extension 164 provided at both ends of the annular sleeve 13, a through slot 161 is provided on one side of the extension 164, a rotating shaft 162 is provided inside one of the through slots 161, and the rotating shaft 162 is rotatably connected to both sides of the inner wall of the through slot 161 through bearings, a third threaded column 163 is vertically installed on one side of the rotating shaft 162, one end of the third threaded column 163 passes through the outside of the other through slot 161 and is screwed to a third fastening nut 165, and an anti-slip block 166 is provided on the side of the third fastening nut 165 away from the extension 164, and the anti-slip block 166 is fixedly installed on the third threaded column 163. Figure 7 、 Figure 8As shown, the third threaded column 163 can be screwed into the through slot 161, and then the third fastening nut 165 is tightened, at this time the annular sleeve 13 is restricted and cannot be opened, so as to facilitate the installation and removal of the wire feeding assembly 15, and the anti-disengagement block 166 is arranged to prevent the third fastening nut 165 from being disengaged from the third threaded column 163 and lost.

[0039] The wire outlet assembly 21 comprises a guide cavity 215 arranged in the fixed rod 20, a guide rod 212 is slidably connected in the guide cavity 215, and not less than three wire outlet slots 211 are arranged on the guide rod 212, the wire outlet slots 211 are equidistantly distributed along the length direction of the guide rod 212, a fixing groove 214 is arranged on the top of the guide rod 212, a locking bolt 213 is arranged on the top of one end of the fixed rod 20 and is perpendicular to the fixed rod 20, a fixing groove 214 corresponding to the locking bolt 213 is arranged on the top of the guide rod 212, and the threaded end of the locking bolt 213 penetrates into the fixing groove 214, as shown in the figure. Figure 2 、 Figure 3 As shown, the staff can adjust the extension length of the guide rod 212 in the guide cavity 215, and after the adjustment is completed, the locking bolt 213 is screwed into the fixing groove 214, so that the wire outlet slots 211 are at different positions on the guide rod 212, the adjustment range of the wire outlet slots 211 is increased, and the wire outlet slots 211 are matched with the wire groove 242 according to the actual situation, which is beneficial to the better entry of the silk thread into the overlock machine body 3.

[0040] The second adjusting assembly 22 comprises a second containing cavity 221 arranged in the fixed seat 19, a circular table 222 is fixedly connected to one end of the fixed rod 20, an annular sliding block 224 is fixedly connected to the outer side of the circular table 222, an annular sliding groove 225 corresponding to the annular sliding block 224 is arranged on the inner wall of the second containing cavity 221, the annular sliding block 224 is located in the annular sliding groove 225, a second transmission shaft 223 is arranged in the second containing cavity 221, one end of the second transmission shaft 223 is connected with the circular table 222, the other end of the second transmission shaft 223 is rotatably connected with the inner wall of the second containing cavity 221 through a bearing, a limiting gear 226 is fixedly connected to the outer side of the second transmission shaft 223, a third containing cavity 227 is arranged on the top of the second containing cavity 221, a push-pull rod 229 is arranged in the third containing cavity 227, a limiting plate 228 is fixedly connected to the outer side of the push-pull rod 229, a spring 2210 is arranged on the top of the limiting plate 228, the limiting plate 228 is located outside the push-pull rod 229, the spring 2210 is connected with the limiting plate 228 and the second containing cavity 221 respectively, the bottom end of the push-pull rod 229 penetrates into the second containing cavity 221 and is fixedly connected with a clamping tooth 2211, and the top end of the push-pull rod 229 penetrates out of the third containing cavity 227, as shown in the figure. Figure 11As shown, when it is necessary to further adjust the angle of the wire outlet groove 211 on the wire outlet assembly 21, the push-pull rod 229 can be lifted so that the end tooth 2211 disengages from between the teeth of the limit gear 226. At this time, the second transmission shaft 223 and the round table 222 are free from restriction and can rotate freely. After the adjustment is completed, the push-pull rod 229 is released, and the spring will drive the tooth 2211 to return to between the teeth of the limit gear 226. At this time, the second transmission shaft 223 and the round table 222 are restricted and cannot rotate. This is beneficial for the staff to adjust the entry angle of the silk thread in the wire outlet groove 211 according to actual conditions, thereby expanding the functionality of the overlock sewing machine in special scenarios and the practicality of the thread rack.

[0041] The second locking assembly 17 includes a first strip plate 171 fixed to one end of the second support rod 18, a fourth threaded column 173 is vertically installed on one side of the first strip plate 171, a second strip plate 172 is fixedly connected to one side of the support cylinder 4, a fastening nut 174 corresponding to the fourth threaded column 173 is provided on one side of the second strip plate 172, a limiting block 175 is fixedly connected to one side of the fastening nut 174, a limiting groove 176 corresponding to the limiting block 175 is opened on the outer side of the second strip plate 172, the limiting block 175 is located inside the limiting groove 176, one end of the fourth threaded column 173 passes through the second strip plate 172 and is screwed to the fastening nut 174, as shown in FIG. Figure 10 As shown, by providing a fastening nut 174 and a fourth threaded column 173, the disassembly and assembly of the outlet assembly 21 is facilitated, and the limiting groove 176 and the limiting block 175 are used to avoid the fastening nut 174 from being lost, thereby further improving the practicality of the structure.

[0042] Working principle: First, the staff installs the supporting cylinder 4 as a whole on one side of the installation panel 1 through the first threaded column 10, and then Figure 3 As shown, the silk thread on the bobbin of the pay-off assembly 15 is passed through the wire groove 242 and the wire outlet groove 211 in turn and enters the interior of the overlock sewing machine body 3. During this period, the height and angle of the wire rack can be adjusted according to actual conditions through the first adjustment assembly 7 and the second adjustment assembly 22, so that the silk thread is always kept taut and the silk thread has a more suitable entry angle, which is beneficial to the sewing work of the overlock sewing machine body 3 at different heights and angles, and expands the functionality of the overlock sewing machine in special scenarios and the practicality of the wire rack. At the same time, by setting the first locking assembly 16 and the second locking assembly 17, the disassembly and assembly of the pay-off assembly 15, the wire outlet assembly 21, and the wire assembly 24 are facilitated, which is beneficial to the quick disassembly and assembly between the wire rack components.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A five-thread overlock sewing machine with an adjustable tailstock, comprising a mounting panel (1), characterized in that: The bottom of the installation panel (1) is fixedly connected to a frame (2), and the top of the installation panel (1) is fixedly installed with a sewing machine body (3). A support cylinder (4) is vertically provided on one side of the sewing machine body (3), and a lead screw sleeve (5) is coaxially provided inside the support cylinder (4). The invention also includes: A first adjusting assembly (7) is provided inside the supporting cylinder (4) for adjusting the extension length of the screw sleeve (5), the top of the screw sleeve (5) is fixedly connected to a supporting column (6), an annular sleeve (13) is coaxially provided on the outer side of the top of the supporting column (6) and the outer side of the bottom of the supporting cylinder (4), wherein two first supporting rods (14) are symmetrically provided on the outer side of the annular sleeve (13) located at the bottom, and a wire-releasing assembly (15) for positioning and fixing the wire drum is provided on the top of each first supporting rod (14), and two third supporting rods (23) are symmetrically provided on the outer side of the annular sleeve (13) located at the top, and a wire assembly (24) for guiding the wire is provided on the bottom of each third supporting rod (23); A first locking assembly (16) is arranged on the outside of the annular sleeve (13) for increasing the speed of disassembling and assembling a wire-releasing assembly (15) and a wire-conducting assembly (24); a second supporting rod (18) is vertically arranged on the outside of the top end of the supporting cylinder (4); one end of the second supporting rod (18) is fixedly connected to a fixing seat (19); both ends of the fixing seat (19) are provided with fixing rods (20); a wire-out assembly (21) is arranged inside the fixing rod (20) for facilitating the orderly entry of silk threads into the overlock sewing machine body (3); one end of the fixing rod (20) is provided with a second adjusting assembly (22) for quickly adjusting the wire-entry angle of the wire-out assembly (21); and the other end of the second supporting rod (18) is provided with a second locking assembly (17) for increasing the speed of disassembling and assembling the wire-out assembly (21).

2. The five-thread overlock sewing machine with an adjustable tailstock according to claim 1, characterized in that: The first adjustment component (7) includes a partition (72) fixed to the bottom of the inner cavity of the support cylinder (4), a ball screw (71) is provided above the partition (72), the bottom end of the ball screw (71) passes through the partition (72) and is rotatably connected to the support cylinder (4), the top end of the ball screw (71) is spirally connected to the screw sleeve (5), a plurality of guide blocks (78) are provided on the outside of the screw sleeve (5), the guide blocks (78) are arranged parallel to the axis of the screw sleeve (5), and the plurality of guide blocks (78) are distributed circumferentially along the outer wall of the screw sleeve (5), one side of the guide block (78) is connected to the screw sleeve (5), and a guide block (78) is provided on the inner wall of the support cylinder (4). The guide block (78) is located inside the guide groove (79), and a first accommodating cavity (73) is provided on one side of the inner wall of the support cylinder (4). A first transmission shaft (74) is provided inside the first accommodating cavity (73). One end of the first transmission shaft (74) is fixedly connected to a driving bevel gear (75). A driven bevel gear (76) is provided on one side of the driving bevel gear (75). The driven bevel gear (76) is fixedly mounted on the ball screw (71). The driving bevel gear (75) and the driven bevel gear (76) are meshed with each other. The other end of the first transmission shaft (74) passes through the outside of the first accommodating cavity (73) and is fixedly connected to an adjusting knob (77).

3. The five-thread overlock sewing machine with an adjustable tailstock according to claim 2, characterized in that: The top ends of the support cylinder (4) and the lead screw sleeve (5) are both fixedly connected to an annular seat (8), a telescopic dustproof sleeve (9) is provided between the annular seats (8), the telescopic dustproof sleeve (9) is located on the periphery of the lead screw sleeve (5), and the telescopic dustproof sleeve (9) is respectively connected to the annular seats (8) at both ends.

4. The five-thread overlock sewing machine with an adjustable tailstock according to claim 2, characterized in that: The bottom end of the support cylinder (4) is fixedly connected to a first threaded column (10), the bottom end of the first threaded column (10) passes through the outside of the mounting panel (1) and is screwed to a first fastening nut (11), and a friction gasket (12) is provided between the first fastening nut (11) and the mounting panel (1).

5. The five-thread overlock sewing machine with an adjustable tailstock according to claim 1, characterized in that: The pay-off assembly (15) includes a second threaded column (152) arranged at the top of the first support rod (14), and the second threaded column (152) is provided with no less than three, and the plurality of second threaded columns (152) are equidistantly distributed along the length direction of the first support rod (14), and a positioning hole (151) corresponding to the second threaded column (152) is opened on the first support rod (14), and the bottom end of the second threaded column (152) passes through the outside of the positioning hole (151) and is spirally connected to a second fastening nut (156), and a rubber cover (157) is provided at the top of the second threaded column (152), and a bobbin tray (154) is provided below the rubber cover (157), and the bobbin tray (154) is located outside the second threaded column (152), and a flexible pad (155) is installed on the top surface of the bobbin tray (154), and a frustum portion (153) is provided on the outside of the second threaded column (152), and the bottom of the frustum portion (153) is in contact with the flexible pad (155).

6. The five-thread overlock sewing machine with an adjustable tailstock according to claim 1, characterized in that: The wire assembly (24) includes a fourth support rod (241) fixed to the bottom of the third support rod (23), and the fourth support rod (241) is provided with no less than three wire grooves (242), and the plurality of wire grooves (242) are equidistantly distributed along the length direction of the fourth support rod (241).

7. The five-thread overlock sewing machine with an adjustable tailstock according to claim 1, characterized in that: The first locking assembly (16) includes an extension portion (164) arranged at both ends of the annular sleeve (13), a through slot (161) is provided on one side of the extension portion (164), a rotating shaft (162) is provided inside one of the through slots (161), and the rotating shaft (162) is rotatably connected to the two sides of the inner wall of the through slot (161) through bearings, a third threaded column (163) is vertically installed on one side of the rotating shaft (162), one end of the third threaded column (163) passes through the outside of the other through slot (161) and is spirally connected to a third fastening nut (165), and an anti-slip block (166) is provided on the side of the third fastening nut (165) away from the extension portion (164), and the anti-slip block (166) is fixedly installed on the third threaded column (163).

8. The five-thread overlock sewing machine with an adjustable tailstock according to claim 1, characterized in that: The outlet assembly (21) includes a guide cavity (215) arranged inside the fixed rod (20), a guide rod (212) is slidably connected inside the guide cavity (215), and no less than three outlet grooves (211) are provided on the guide rod (212), and the plurality of outlet grooves (211) are equidistantly distributed along the length direction of the guide rod (212). A fixing groove (214) is provided on the top of the guide rod (212), and a locking bolt (213) perpendicular to the fixing rod (20) is provided on the top of one end of the fixing rod (20), and a fixing groove (214) corresponding to the locking bolt (213) is provided on the top of the guide rod (212), and the threaded end of the locking bolt (213) passes through the inside of the fixing groove (214).

9. The five-thread overlock sewing machine with an adjustable tailstock according to claim 1, characterized in that: The second adjustment component (22) includes a second accommodating cavity (221) arranged inside the fixing seat (19), one end of the fixing rod (20) is fixedly connected to a truncated cone (222), the outer side of the truncated cone (222) is fixedly connected to an annular slider (224), an annular groove (225) corresponding to the annular slider (224) is provided on the inner wall of the second accommodating cavity (221), the annular slider (224) is located inside the annular groove (225), a second transmission shaft (223) is provided inside the second accommodating cavity (221), one end of the second transmission shaft (223) is connected to the truncated cone (222), the other end of the second transmission shaft (223) is rotatably connected to the inner wall of the second accommodating cavity (221) through a bearing, and the second transmission shaft (223) is fixedly connected to a limiting gear (226) on the outside, a third accommodating chamber (227) is opened on the top of the second accommodating chamber (221), a push-pull rod (229) is provided inside the third accommodating chamber (227), the push-pull rod (229) is fixedly connected to a limiting plate (228) on the outside, a spring (2210) is provided on the top of the limiting plate (228), the limiting plate (228) is located outside the push-pull rod (229), the spring (2210) is respectively connected to the limiting plate (228) and the second accommodating chamber (221), the bottom end of the push-pull rod (229) passes through the inside of the second accommodating chamber (221) and is fixedly connected with a latch (2211), and the top end of the push-pull rod (229) passes through the outside of the third accommodating chamber (227).

10. The five-thread overlock sewing machine with an adjustable tailstock according to claim 1, characterized in that: The second locking assembly (17) comprises a first strip plate (171) fixed to one end of the second support rod (18), a fourth threaded column (173) is vertically mounted on one side of the first strip plate (171), a second strip plate (172) is fixedly connected to one side of the support cylinder (4), a fastening nut (174) corresponding to the fourth threaded column (173) is provided on one side of the second strip plate (172), a limiting block (175) is fixedly connected to one side of the fastening nut (174), a limiting groove (176) corresponding to the limiting block (175) is provided on the outer side of the second strip plate (172), the limiting block (175) is located inside the limiting groove (176), and one end of the fourth threaded column (173) passes through the second strip plate (172) and is spirally connected to the fastening nut (174).

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