CN113798970B

CN113798970B - Automatic drawing machine and method for double-needle sewing thread trimmer

Info

Publication number: CN113798970B
Application number: CN202111144935.3A
Authority: CN
Inventors: 汪成文; 张勇
Original assignee: Taiyuan University of Technology
Current assignee: Taiyuan University of Technology
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-08-16
Anticipated expiration: 2041-09-28
Also published as: CN113798970A

Abstract

The invention provides an automatic polishing machine and method for a double-needle sewing machine thread trimmer, belonging to the technical field of automatic processing of the thread trimmer of a sewing machine; the automatic drawing and polishing machine of the double-needle sewing thread trimmer comprises a base, a feeding device, a clamping device and a drawing and polishing device; the feeding device comprises a linear reciprocating mechanism I, a linear reciprocating mechanism II, a feeding cartridge clip base, a feeding cartridge clip top cover and a linear reciprocating mechanism III; the clamping device comprises a linear reciprocating mechanism IV, a clamping platform I, a rotating mechanism, a clamping platform II and a clamping mechanism; the polishing device comprises a linear reciprocating mechanism V, a polishing platform I, a linear reciprocating mechanism VI, a polishing platform II, a roller driving mechanism, a reversing column, an outer ring and an abrasive belt. The invention can solve the problems that when the upper and lower processing openings of the double-needle thread trimmer are manually polished, the double-needle thread trimmer is difficult to clamp, the requirement of workers is large, the working environment is poor and the working efficiency is low.

Description

Automatic drawing machine and method for double-needle sewing thread trimmer

Technical Field

The invention belongs to the technical field of automatic processing of a thread trimmer of a sewing machine, and particularly discloses an automatic polishing machine and method for a double-needle sewing thread trimmer.

Background

The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on a sewing material to enable one or more layers of the sewing material to be interwoven or sewn, and the sewing machine can be used for sewing fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewn stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.

In the production process of the sewing machine, in order to make the sewing machine beautiful and practical, the parts of the sewing machine need to be subjected to polishing treatment. However, the sewing machine is mostly small and irregular workpieces which are not easy to clamp, and after clamping is finished, the angle is required to be adjusted for many times to ensure uniform polishing; at present, the special-shaped pieces are completely drawn by manpower, the dependence on the manpower is high, and the special-shaped pieces are large in demand, so that the labor is required to be invested greatly.

The double-needle sewing machine thread cutter is one of various special-shaped fittings of a sewing machine, and the upper and lower processing openings of the double-needle sewing machine thread cutter are completely drawn and polished manually at present. At first use tiger's head pincers centre gripping, the centre gripping is unstable, can the tilting when drawing light, and secondly artifical use abrasive paper draws light, draws light produced flying dust to lead to operational environment not good, and the workman need wear the gauze mask and carry out work, otherwise can influence the staff healthy, and finally, artifical drawing light efficiency is not high, and the manpower that needs to drop into is also great. Therefore, it is necessary to design an automatic polishing device for the double-needle sewing machine thread trimmer to solve the above problems.

Disclosure of Invention

The invention aims to provide an automatic drawing machine and method for a double-needle sewing thread trimmer, which can solve the problems that the double-needle sewing thread trimmer is not easy to clamp, the requirement of workers is large, the working environment is poor and the working efficiency is low when the upper and lower processing openings of the double-needle sewing thread trimmer are manually drawn and polished.

In order to achieve the aim, the invention provides an automatic drawing machine of a double-needle sewing thread trimmer, which comprises a base, a feeding device, a clamping device and a drawing device, wherein the feeding device is arranged on the base; the feeding device comprises a linear reciprocating mechanism I, a linear reciprocating mechanism II, a feeding cartridge clip base, a feeding cartridge clip top cover and a linear reciprocating mechanism III; the loading cartridge clip base comprises a mounting base I, a clamping base and a mounting base II which are connected in sequence; the clamping base is an L-shaped plate formed by enclosing a bottom plate and side plates, the side plates are rotatably connected or spliced with the loading cartridge clip top cover, and the loading cartridge clip top cover and the clamping base enclose a clamping space of the double-needle sewing thread trimmer; the fixed part of the linear reciprocating mechanism I is fixed on the base, and the moving part is connected with the mounting base I; the fixed part of the linear reciprocating mechanism II is fixed on the mounting base I, the moving part is fixed with a push plate I, and the push plate I extends into a rear opening in the clamping space; the fixed part of the linear reciprocating mechanism III is fixed on the mounting base II, the moving part is provided with a push plate II, the moving direction of the push plate II is vertical to that of the push plate I, and the push plate II is provided with an upper clamping plate and a lower clamping plate; the upper clamping plate and the lower clamping plate are positioned at the front opening of the clamping space and used for clamping a double-needle sewing thread trimmer separated from the front opening; the clamping device comprises a linear reciprocating mechanism IV, a clamping platform I, a rotating mechanism, a clamping platform II and a clamping mechanism; the fixed part of the linear reciprocating mechanism IV is fixed on the base, and the moving part is connected with the clamping platform I; the rotating mechanism is arranged on the clamping platform I; the clamping platform II is arranged on a rotary interface of the rotary mechanism; the clamping mechanism is arranged on the clamping platform II, and clamping fingers are positioned on two sides of the double-needle sewing thread trimmer clamped by the upper clamping plate and the lower clamping plate; the polishing device comprises a linear reciprocating mechanism V, a polishing platform I, a linear reciprocating mechanism VI, a polishing platform II, a roller driving mechanism, a reversing column, an outer ring and an abrasive belt; the fixed part of the linear reciprocating mechanism V is fixed on the base, the moving part is connected with the polishing platform I, and the moving direction of the polishing platform I is vertical to the double-needle sewing thread trimmer clamped by the clamping mechanism; the fixed part of the linear reciprocating mechanism VI is fixed on the drawing platform I, the moving part is connected with the drawing platform II, and the two groups of linear reciprocating mechanisms VI and the drawing platform II are positioned at two sides of the double-needle sewing thread trimmer clamped by the clamping mechanism; the roller driving mechanism is horizontally arranged on the drawing platform II, and the output shaft is provided with a roller; the reversing column is vertically arranged on the polishing platform II, and the top end of the reversing column is provided with an outer ring for preventing the abrasive belt from falling off; the abrasive belt is wound on the two groups of rollers and the reversing column between the two groups of rollers.

Further, the linear reciprocating mechanism I, the linear reciprocating mechanism II and the linear reciprocating mechanism III are respectively a telescopic cylinder I, a telescopic cylinder II and a telescopic cylinder III; the cylinder body of the telescopic cylinder I is fixed on a support I, a piston is connected with a mounting base I, and the support I is fixed on the base; the cylinder body of the telescopic cylinder II is fixed on the mounting base I, and the piston is connected with the push plate I; the cylinder body of the telescopic cylinder III is fixed on the mounting base II, and the piston is connected with the push plate II; the feeding device further comprises a guide rail supporting block I fixed on the base, a linear guide rail I installed on the guide rail supporting block I and a linear slider I in sliding fit with the linear guide rail I, and the linear slider I is installed at the bottom of the installation base I.

Furthermore, the upper clamping plate is hinged with the push plate II, and a torsional spring is arranged at the hinged position.

Further, the linear reciprocating mechanism IV is a telescopic cylinder IV, and the rotating mechanism is a rotating cylinder; the cylinder body of the telescopic cylinder IV is fixed on a support II, a piston is connected with the clamping platform I, and the support II is fixed on the base; the clamping device further comprises a linear guide rail II fixed on the base and a linear sliding block II in sliding fit with the linear guide rail II, and the linear sliding block II is installed at the bottom of the clamping platform I.

Further, the fixed part of the linear reciprocating mechanism V comprises an eccentric wheel motor and an eccentric wheel, and the moving part comprises a straight groove connecting rod and a connecting rod; the center of the eccentric wheel is connected with an output shaft of the eccentric wheel motor, and an eccentric column is arranged at a position deviating from the center; the first end of the straight groove connecting rod is a straight sliding groove and is sleeved on the eccentric column, the second end of the straight groove connecting rod is rotatably connected with the first end of the connecting rod through a connecting shaft, and the second end of the connecting rod is fixedly connected with the light pulling platform I; the linear reciprocating mechanism VI is a telescopic cylinder VI, a cylinder body is fixed on the polishing platform I, and a piston is connected with the polishing platform II; the roller driving mechanism is a roller motor.

Furthermore, the eccentric wheel motor is fixed on a bracket III, and the bracket III is fixed on the base; the polishing device also comprises a support IV fixed on the base, a fixed slide rail fixed on the support IV, a guide rail supporting block III fixed on the base, a linear guide rail III arranged on the guide rail supporting block III and a linear slide block III in sliding fit with the linear guide rail III, wherein the linear slide block III is arranged at the bottom of the polishing platform I; the connecting rod passes through the horizontal groove of the fixed slide rail.

Furthermore, a supporting plate is fixed at the bottom end of the reversing column; the supporting plate is connected with the drawing platform II in a sliding mode, the sliding direction is parallel to the axis of the roller, and a spring is arranged between the supporting plate and the drawing platform II.

Furthermore, a connecting disc is arranged at the position, opposite to the roller motor, on the polishing platform II, a connecting column is arranged at the center of the connecting disc, and the connecting column is rotatably arranged in the roller in a penetrating mode.

Furthermore, the base is of a cavity structure formed by a plurality of baffles in a surrounding mode, a feed opening is formed in the top plate, and a collecting tank is arranged in the cavity; the feed opening is positioned below the double-needle sewing thread cutter clamped by the clamping mechanism; the collecting tank is positioned below the feed opening, and a buffer layer is arranged in the collecting tank; the telescopic cylinder and the rotary cylinder are both cylinders, and the clamping mechanism is a finger cylinder.

The invention also provides an automatic polishing method of the double-needle sewing thread trimmer, which adopts the automatic polishing machine of the double-needle sewing thread trimmer to polish the upper processing opening and the lower processing opening of the double-needle sewing thread trimmer and comprises the following steps:

s1, charging: opening the top cover of the feeding cartridge clip, loading the double-needle sewing thread trimmer into the clamping base, and covering the top cover of the feeding cartridge clip;

s2, feeding: the linear reciprocating mechanism I drives the feeding cartridge clip base to be close to the clamping mechanism until a front opening of a clamping space reaches clamping fingers of the clamping mechanism, the linear reciprocating mechanism II drives the push plate I to push the two-needle sewing thread trimming cutter forwards for one station, so that the two-needle sewing thread trimming cutter positioned at the forefront is pushed out of the clamping space and then is clamped by the upper clamping plate and the lower clamping plate, the linear reciprocating mechanism III drives the push plate II to move the clamped two-needle sewing thread trimming cutter to the clamping mechanism until the clamped two-needle sewing thread trimming cutter is horizontally extended out of the mounting base II by the clamping end, the linear reciprocating mechanism IV drives the clamping mechanism to be close to the clamped two-needle sewing thread trimming cutter, the clamping mechanism clamps the horizontal clamped end of the two-needle sewing thread trimming cutter, the linear reciprocating mechanism IV resets, the two-needle sewing thread trimming cutter is pulled out of the upper clamping plate and the lower clamping plate, and the linear reciprocating mechanism III drives the push plate II to reset, waiting for next feeding;

s3, polishing:

t1, the linear reciprocating mechanism IV drives the clamping mechanism to approach the abrasive belt until the upper processing opening or the lower processing opening of the double-needle sewing thread trimmer is contacted with the abrasive belt, and the contact position is the processing position;

t2, A of the two groups of linear reciprocating mechanisms VI drives the light-drawing platform II connected with the linear reciprocating mechanisms VI to move towards the clamping mechanism, the linear reciprocating mechanism V drives the light-drawing platform I to do linear reciprocating motion, and the abrasive belt draws light towards the side A of the group A of linear reciprocating mechanisms VI at the machining position;

t3, after the side A is polished, the linear reciprocating mechanism V stops acting, the group B of linear reciprocating mechanisms VI drive the polishing platform II connected with the linear reciprocating mechanisms to move towards the clamping mechanism, the moving distance is the same as that of the group A of linear reciprocating mechanisms VI, the linear reciprocating mechanism V drives the polishing platform I to do linear reciprocating motion, and the abrasive belt polishes the middle part of the processing position;

t4, after the middle part is polished, the linear reciprocating mechanism V stops acting, the group B linear reciprocating mechanism VI drives the polishing platform II connected with the linear reciprocating mechanism V to continue moving to the clamping mechanism, the linear reciprocating mechanism V drives the polishing platform I to do linear reciprocating motion, and the abrasive belt polishes the side B of the processing position facing to the group B linear reciprocating mechanism VI;

t5, after finishing the polishing of the side B of the processing position, stopping the action of the linear reciprocating mechanism V, resetting the two groups of linear reciprocating mechanisms VI, rotating the rotating mechanism to enable the non-polishing position of the processing opening to be contacted with the abrasive belt, and repeating the steps t 2-t 4 to finish the polishing of the processing opening;

t6, resetting the linear reciprocating mechanism IV, rotating the rotating mechanism to enable the non-polished processing opening to be aligned with the abrasive belt, repeating the steps t 1-t 5, and finishing the polishing of the double-needle vehicle thread trimmer.

Compared with the prior art, the invention has the following beneficial effects.

1. The production efficiency is high: compared with manual polishing, the automatic polishing machine can run continuously, and has high labor intensity and long working time.

2. The production cost is reduced: by using the machine, a large amount of labor expenses can be saved, and some errors and waste which cannot be avoided in the production process of manual labor force can be reduced.

3. The machining precision is high, and the machining quality is stable: though the flexibility is large, the manual drawing has unstable factors all the time, the processing effect cannot be guaranteed, the automatic processing equipment is stable in processing, and the processing precision is high.

Drawings

FIG. 1 is an isometric view of a double needle sewing thread trimmer automatic polishing machine;

FIG. 2 is a front view of the base;

FIG. 3 is an isometric view of the loading device;

FIG. 4 is an enlarged view of a portion of the loading device;

FIG. 5 is a front view of the loading device;

FIG. 6 is an isometric view of the clamping device;

FIG. 7 is an isometric view of a light pulling apparatus;

FIG. 8 is a top view of the light pulling device;

FIG. 9 is an isometric view of the pull platform I;

FIG. 10 is a top view of the connecting disc and connecting stud;

fig. 11 is an axial sectional view of the drum.

In the figure: 1-a base, 2-a feeding device, 3-a clamping device, 4-a drawing device, 5-a collecting tank, 6-a double-needle sewing thread cutter,

101-top plate, 102-side plate, 103-foot pad, 104-bottom plate, 105-rear baffle, 106-feed opening,

201-a bracket I, 202-a telescopic cylinder fixing frame I, 203-a telescopic cylinder I, 204-a feeding cartridge clip base, 205-a telescopic cylinder II, 206-a telescopic cylinder fixing frame II, 207-a push plate I, 208-a telescopic cylinder III, 209-a telescopic cylinder fixing frame III, 210-a push plate II, 211-an upper clamping plate, 212-a lower clamping plate, 213-a guide rail supporting block I, 214-a linear guide rail I, 215-a linear sliding block I, 216-a connecting shaft, 217-a feeding cartridge clip top cover,

301-clamping platform I, 302-rotating cylinder, 303-clamping platform II, 304-linear slide block II, 305-linear guide rail II, 306-finger cylinder, 307-bracket II, 308-telescopic cylinder fixing frame IV, 309-telescopic cylinder IV,

401-eccentric wheel motor, 402-bracket III, 403-fixed slide rail, 404-bracket IV, 405-polishing platform I, 406-telescopic cylinder VI, 407-telescopic cylinder fixing frame VI, 408-linear slide block III, 409-linear guide rail III, 410-guide rail supporting block III, 411-abrasive belt, 412-polishing platform II, 413-connecting rod, 414-straight groove connecting rod, 415-eccentric wheel, 416-connecting disc, 417-connecting column, 418-roller, 419-roller motor, 420-spring, 421-supporting plate, 422-reversing column, 423-outer ring,

601-upper processing port, 602-lower processing port.

Detailed Description

Example 1

The embodiment provides an automatic drawing machine of double-needle sewing thread trimmer, which comprises a base 1, a feeding device 2, a clamping device 3 and a drawing device 4.

The feeding device 2 comprises a linear reciprocating mechanism I, a linear reciprocating mechanism II, a feeding clip base 204, a feeding clip top cover 217 and a linear reciprocating mechanism III; the loading cartridge clip base 204 comprises a mounting base I, a clamping base and a mounting base II which are connected in sequence; the clamping base is an L-shaped plate formed by enclosing a bottom plate and side plates, the side plates are rotatably connected or spliced with the feeding cartridge clip top cover 217, in the embodiment, the side plates are rotatably connected with the feeding cartridge clip top cover 217 through a connecting shaft 216, and the feeding cartridge clip top cover 217 and the clamping base enclose a clamping space of the double-needle sewing wire trimming cutter 6; the fixed part of the linear reciprocating mechanism I is fixed on the base 1, and the moving part is connected with the mounting base I; the fixed part of the linear reciprocating mechanism II is fixed on the mounting base I, the moving part is fixed with a push plate I207, and the push plate I207 extends into a rear opening in the clamping space; the fixed part of the linear reciprocating mechanism III is fixed on the mounting base II, the moving part is provided with a push plate II 210, the moving direction of the push plate II 210 is vertical to the moving direction of the push plate I207, and the push plate II 210 is provided with an upper clamping plate 211 and a lower clamping plate 212; the upper clamping plate 211 and the lower clamping plate 212 are positioned at the front opening of the clamping space and are used for clamping the double-needle sewing thread trimmer 6 separated from the front opening.

The clamping device 3 comprises a linear reciprocating mechanism IV, a clamping platform I301, a rotating mechanism, a clamping platform II 303 and a clamping mechanism; the fixed part of the linear reciprocating mechanism IV is fixed on the base 1, and the moving part is connected with the clamping platform I301; the rotating mechanism is arranged on the clamping platform I301; the clamping platform II 303 is arranged on a rotary interface of the rotary mechanism; the clamping mechanism is arranged on the clamping platform II 303, and clamping fingers are positioned on two sides of the double-needle sewing thread trimmer 6 clamped by the upper clamping plate 211 and the lower clamping plate 212.

The polishing device 4 comprises a linear reciprocating mechanism V, a polishing platform I405, a linear reciprocating mechanism VI, a polishing platform II 412, a roller 418, a roller driving mechanism, a reversing column 422, an outer ring 423 and a sand belt 411; the fixed part of the linear reciprocating motion mechanism V is fixed on the base 1, the moving part is connected with the drawing platform I405, and the moving direction of the drawing platform I405 is vertical to the double-needle sewing thread trimmer 6 clamped by the clamping mechanism; the fixed part of the linear reciprocating mechanism VI is fixed on the drawing platform I405, the moving part is connected with the drawing platform II 412, and the two groups of linear reciprocating mechanisms VI and the drawing platform II 412 are positioned at two sides of the double-needle sewing thread trimmer 6 clamped by the clamping mechanism; the roller driving mechanism is horizontally arranged on the drawing platform II 412, and the output shaft is provided with a roller 418; the reversing column 422 is vertically arranged on the polishing platform II 412, and the top end of the reversing column is provided with an outer ring 423 for preventing the abrasive belt 411 from falling off; sanding belt 411 is wound on both sets of rollers 418 and on reversing post 422 between both sets of rollers 418.

Further, the linear reciprocating mechanism I, the linear reciprocating mechanism II and the linear reciprocating mechanism III are respectively a telescopic cylinder I203, a telescopic cylinder II 205 and a telescopic cylinder III 208; the cylinder body of the telescopic cylinder I203 is fixed on a support I201 through a telescopic cylinder fixing frame I202, a piston is connected with a mounting base I, and the support I201 is fixed on a base 1; the cylinder body of the telescopic cylinder II 205 is fixed on the mounting base I through a telescopic cylinder fixing frame II 206, and the piston is connected with the push plate I207; the cylinder body of the telescopic cylinder III 208 is fixed on the mounting base II through a telescopic cylinder fixing frame III 209, and the piston is connected with the push plate II 210; the feeding device further comprises a guide rail supporting block I213 fixed on the base 1, a linear guide rail I214 installed on the guide rail supporting block I213 and a linear sliding block I215 in sliding fit with the linear guide rail I214, and the linear sliding block I215 is installed at the bottom of the installation base I so as to ensure the stability of the translation of the feeding clip base 204.

Further, the upper clamping plate 211 is hinged to the push plate II 210, and a torsion spring is arranged at the hinged position. When the clamping mechanism is pulled out of the double needle sewing thread trimming cutter 6 from the space between the upper clamping plate 211 and the lower clamping plate 212, the vertical part of the double needle sewing thread trimming cutter 6 which is bent upwards extrudes the upper clamping plate 211, so that the upper clamping plate 211 is close to the push plate II 210, and after the double needle sewing thread trimming cutter 6 is pulled out, the upper clamping plate 211 is reset under the elasticity of the torsion spring.

Further, the linear reciprocating mechanism IV is a telescopic cylinder IV 309, the rotating mechanism is a rotating cylinder 302, and the rotating cylinder 302 is fixed on the clamping platform I301 through a screw; the cylinder body of the telescopic cylinder IV 309 is fixed on a support II 307 through a telescopic cylinder fixing frame IV 308, the piston is connected with the clamping platform I301, and the support II 307 is fixed on the base 1; clamping device is still including fixing linear guide II 305 on base 1 and with II 305 sliding fit's of linear guide II 304, the bottom at I301 of clamping platform is installed to II 304 of linear guide to guarantee the stability of I301 translations of clamping platform.

Further, the fixed part of the linear reciprocating mechanism v comprises an eccentric wheel motor 401 and an eccentric wheel 415, and the moving part comprises a straight slot connecting rod 414 and a connecting rod 413; the center of the eccentric 415 is connected with an output shaft of the eccentric motor 401, and an eccentric column is arranged at a position deviating from the center; the first end of the straight groove connecting rod 414 is a straight sliding groove and is sleeved on the eccentric column, the second end of the straight groove connecting rod is rotatably connected with the first end of the connecting rod 413 through a connecting shaft, and the second end of the connecting rod is fixedly connected with the first drawing platform I405 through threads; the linear reciprocating mechanism VI is a telescopic cylinder VI 406, a cylinder body is fixed on the light-drawing platform I405 through a telescopic cylinder fixing frame VI 407, and a piston is connected with the light-drawing platform II 412 through threads; the drum driving mechanism is a drum motor 419.

Further, the eccentric wheel motor 401 is fixed on a bracket III 402, and the bracket III 402 is fixed on the base 1; the light-drawing device further comprises a support IV 404 fixed on the base 1, a fixed slide rail 403 fixed on the support IV 404, a guide rail supporting block III 410 fixed on the base 1, a linear guide rail III 409 installed on the guide rail supporting block III 410 and a linear slide block III 408 in sliding fit with the linear guide rail III 409, and the linear slide block III 408 is installed at the bottom of the light-drawing platform I405 so as to ensure the stability of the translation of the light-drawing platform I405; the link 413 passes through a horizontal slot of the fixed slide rail 403, preventing the link 413 from swinging up and down.

Further, a supporting plate 421 is fixed at the bottom end of the reversing column 422; the supporting plate 421 is connected with the second polishing platform 421 in a sliding manner, the sliding direction is parallel to the axis of the roller 418, a spring 420 is arranged between the supporting plate 421 and the second polishing platform 421, when the abrasive belt 411 is pressed by the processing opening of the sewing machine 6, the reversing column 422 can move, the spring 420 buffers the impact force generated when the abrasive belt 411 is contacted with the processing opening of the sewing machine 6, and meanwhile, the abrasive belt 411 is tightly attached to the processing opening of the sewing machine 6.

Furthermore, a connecting disc 416 is arranged on the polishing platform II 412 at a position opposite to the roller motor 419, a connecting column 417 is arranged at the center of the connecting disc 416, and the connecting column 417 is rotatably arranged in the roller 418 in a penetrating manner.

Further, a spline shaft is arranged on an output shaft of the drum motor 419, and a spline groove matched with the spline shaft is arranged in the drum 418.

Further, the base 1 is a cavity structure enclosed by a plurality of baffles, in this embodiment, the base is a cuboid structure with an opening in the front, and includes a top plate 101, a bottom plate 104, and two side plates 102 and a rear baffle 105 which connect the top plate 101 and the bottom plate 104, the side plates 102 are provided with four foot pads 103 for supporting, the top plate 101 is provided with a feed opening 106, and a collecting tank 5 is arranged in the cavity; the feed opening 106 is positioned below the double-needle sewing thread cutter 6 clamped by the clamping mechanism; the collecting groove 5 is positioned below the feed opening 106, and a buffer layer such as sponge is arranged in the collecting groove 5 to prevent the double-needle sewing thread cutter 6 from being damaged by falling; the telescopic cylinder and the rotary cylinder are both cylinders, and the clamping mechanism is a finger cylinder 306.

Example 2

The present embodiment provides an automatic polishing method for a stitching machine thread trimmer, which performs polishing on an upper processing opening 601 and a lower processing opening 602 of a stitching machine thread trimmer 6 by using the automatic polishing machine for stitching machine thread trimmers, and includes the following steps, and the description about the direction in the following description takes fig. 1 as a reference.

S1, charging: and opening the top cover 217 of the feeding cartridge clip, loading the double-needle sewing thread trimming cutter 6 into the clamping base, and covering the top cover 217 of the feeding cartridge clip.

S2, feeding: the linear reciprocating mechanism I (the telescopic cylinder I203) drives the feeding cartridge clip base 204 to move forwards to be close to the clamping mechanism (the finger cylinder 306) until a front opening of a clamping space reaches a clamping finger of the clamping mechanism, the linear reciprocating mechanism II (the telescopic cylinder II 205) drives the push plate I207 to push the two-needle vehicle trimming knife 6 forwards for one station, so that the two-needle vehicle trimming knife 6 positioned at the forefront is pushed out of the clamping space and then is clamped by the upper clamping plate 211 and the lower clamping plate 212, the linear reciprocating mechanism III (the telescopic cylinder III 208) drives the push plate II 210 to move the clamped two-needle vehicle trimming knife 6 towards the clamping mechanism (leftwards in the figure) until the level of the clamped two-needle vehicle trimming knife 6 is extended out of the mounting base II by a clamping end, and the linear reciprocating mechanism IV (the telescopic cylinder IV) drives the clamping mechanism to move rightwards to be close to the clamped two-needle vehicle trimming knife 6, the clamping mechanism clamps the horizontal clamped end of the double-needle sewing thread trimming cutter 6, the linear reciprocating mechanism IV resets leftwards, the double-needle sewing thread trimming cutter 6 is pulled out from the upper clamping plate 211 and the lower clamping plate 212, the linear reciprocating mechanism III drives the push plate II 210 to reset for waiting for next feeding, and the linear reciprocating mechanism II can pre-push out the second double-needle sewing thread trimming cutter 6 during the resetting period of the linear reciprocating mechanism III or waiting for the next feeding period and can also re-push out the second double-needle sewing thread trimming cutter during the next feeding.

S3, polishing:

t1, the linear reciprocating mechanism IV (the telescopic cylinder IV 309) drives the clamping mechanism to move right to be close to the abrasive belt 411 until the upper processing opening or the lower processing opening of the double-needle sewing thread trimmer 6 is contacted with the abrasive belt 411, and the contact position is a processing position;

t2, a of the two groups of linear reciprocating mechanisms VI (telescopic cylinders VI 406) drives the light-drawing platform II 412 connected with the linear reciprocating mechanisms VI to move towards the clamping mechanism (for example, the telescopic cylinders VI 406 behind the double-needle sewing thread trimmer 6 extend leftwards, at the moment, the rear ends of the processing positions are in closest contact with the abrasive belts 411), the linear reciprocating mechanisms V drive the light-drawing platform I405 to do linear reciprocating motion, and the abrasive belts 411 draw light towards the A side of the group A of linear reciprocating mechanisms VI at the processing positions;

t3, after the side A is polished, the linear reciprocating mechanism V stops moving, the group B linear reciprocating mechanism VI drives the polishing platform II connected with the linear reciprocating mechanism VI to move towards the clamping mechanism, the moving distance is the same as that of the group A linear reciprocating mechanism VI (the distance of extension of a telescopic cylinder VI 406 in front of and behind the double-needle sewing thread trimmer 6 to the left is the same, at the moment, the middle part of the processing position of the double-needle sewing thread trimmer 6 is in closest contact with the abrasive belt 411), the linear reciprocating mechanism V drives the polishing platform I405 to do linear reciprocating motion, and the abrasive belt 411 performs polishing on the middle part of the processing position;

t4, after the middle part is polished, the linear reciprocating mechanism V stops acting, the group B linear reciprocating mechanism VI drives the polishing platform II 412 connected with the linear reciprocating mechanism VI to continuously move towards the clamping mechanism (the telescopic cylinder VI 406 positioned in front of the double-needle vehicle thread trimmer 6 continuously extends leftwards, at the moment, the front end of the processing position is in closest contact with the abrasive belt 411), the linear reciprocating mechanism V drives the polishing platform I405 to do linear reciprocating motion, and the abrasive belt polishes the processing position towards the side B of the group B linear reciprocating mechanism VI;

S4, blanking: after finishing the drawing, the linear reciprocating mechanism IV resets, and the fingers of the finger cylinder 306 are loosened, so that the double-needle sewing thread trimmer 6 penetrates through the feed opening 106 and falls into the collecting tank 5.

S5, repeating the steps S2-S4.

In the polishing process, the abrasive belt 411 is automatically replaced, a roll of unworn abrasive belt 411 is arranged on a roller A of two rollers 418, the end part of the abrasive belt 411 is sequentially wound on a roller B through two reversing columns 422, the section of abrasive belt 411 which is being polished is arranged between the two reversing columns 422, the two rollers 418 are not rotated during polishing, the reciprocating motion of a polishing platform I405 is realized through a slider-crank mechanism for polishing, after a plurality of or one double-needle vehicle line shearing knife 6 is processed, the section of abrasive belt 411 is abraded, at the moment, two roller motors 419 drive the two rollers 418 to rotate in the same direction, the abraded abrasive belt 411 between the two rollers 418 is wound on the roller B, the unworn abrasive belt 411 is wound out from the roller A, at the moment, the abrasive belt 411 between the two reversing columns 422 is replaced by the unworn abrasive belt 411, the polishing motion can be continuously performed, and the automatic replacement of the abrasive belt 411 is realized, after the abrasive belt 411 is completely worn, the machine needs to be stopped and manually replaced by another abrasive belt 411; after the loaded double-needle sewing thread trimming knives 6 are completely polished, the machine needs to be stopped for manual reloading, and the loading capacity of specific workpieces can be expanded according to actual working conditions.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.

Claims

1. An automatic drawing machine of a double-needle sewing thread trimmer is characterized by comprising a base, a feeding device, a clamping device and a drawing device;

the feeding device comprises a linear reciprocating mechanism I, a linear reciprocating mechanism II, a feeding cartridge clip base, a feeding cartridge clip top cover and a linear reciprocating mechanism III;

the feeding cartridge clip base comprises a mounting base I, a clamping base and a mounting base II which are sequentially connected;

the clamping base is an L-shaped plate formed by enclosing a bottom plate and side plates, the side plates are rotatably connected or spliced with the loading cartridge clip top cover, and the loading cartridge clip top cover and the clamping base enclose a clamping space of the double-needle sewing thread trimmer;

the fixed part of the linear reciprocating mechanism I is fixed on the base, and the moving part is connected with the mounting base I;

the fixed part of the linear reciprocating mechanism II is fixed on the mounting base I, the moving part is fixed with a push plate I, and the push plate I extends into a rear opening in the clamping space;

the fixed part of the linear reciprocating mechanism III is fixed on the mounting base II, the moving part is provided with a push plate II, the moving direction of the push plate II is vertical to that of the push plate I, and the push plate II is provided with an upper clamping plate and a lower clamping plate;

the upper clamping plate and the lower clamping plate are positioned at the front opening of the clamping space and used for clamping a double-needle sewing thread trimmer separated from the front opening;

the clamping device comprises a linear reciprocating mechanism IV, a clamping platform I, a rotating mechanism, a clamping platform II and a clamping mechanism;

the fixed part of the linear reciprocating mechanism IV is fixed on the base, and the moving part is connected with the clamping platform I;

the rotating mechanism is arranged on the clamping platform I;

the clamping platform II is arranged on a rotary interface of the rotary mechanism;

the clamping mechanism is arranged on the clamping platform II, and clamping fingers are positioned on two sides of the double-needle sewing thread trimmer clamped by the upper clamping plate and the lower clamping plate;

the polishing device comprises a linear reciprocating mechanism V, a polishing platform I, a linear reciprocating mechanism VI, a polishing platform II, a roller driving mechanism, a reversing column, an outer ring and an abrasive belt;

the fixed part of the linear reciprocating motion mechanism V is fixed on the base, the moving part is connected with the polishing platform I, and the moving direction of the polishing platform I is vertical to the double-needle sewing thread trimmer clamped by the clamping mechanism;

the fixed part of the linear reciprocating mechanism VI is fixed on the drawing platform I, the moving part is connected with the drawing platform II, and the two groups of linear reciprocating mechanisms VI and the drawing platform II are positioned on two sides of the double-needle sewing thread trimmer clamped by the clamping mechanism;

the roller driving mechanism is horizontally arranged on the polishing platform II, and a roller is arranged on an output shaft;

the reversing column is vertically arranged on the polishing platform II, and the top end of the reversing column is provided with an outer ring for preventing the abrasive belt from falling off;

the abrasive belt is wound on the two groups of rollers and the reversing column between the two groups of rollers.

2. The automatic drawing machine of the double-needle sewing thread trimmer according to claim 1, wherein the linear reciprocating mechanism I, the linear reciprocating mechanism II and the linear reciprocating mechanism III are respectively a telescopic cylinder I, a telescopic cylinder II and a telescopic cylinder III;

the cylinder body of the telescopic cylinder I is fixed on a support I, a piston is connected with a mounting base I, and the support I is fixed on the base;

the cylinder body of the telescopic cylinder II is fixed on the mounting base I, and the piston is connected with the push plate I;

the cylinder body of the telescopic cylinder III is fixed on the mounting base II, and the piston is connected with the push plate II;

the feeding device further comprises a guide rail supporting block I fixed on the base, a linear guide rail I installed on the guide rail supporting block I and a linear slider I in sliding fit with the linear guide rail I, and the linear slider I is installed at the bottom of the installation base I.

3. The automatic drawing machine of the double-needle sewing thread trimmer according to claim 2, wherein the upper clamping plate is hinged with the push plate II, and a torsion spring is arranged at the hinged position.

4. The automatic polishing machine of the double-needle sewing machine thread trimmer according to claim 1, wherein the linear reciprocating mechanism IV is a telescopic cylinder IV, and the rotating mechanism is a rotating cylinder;

the cylinder body of the telescopic cylinder IV is fixed on a support II, a piston is connected with the clamping platform I, and the support II is fixed on the base;

clamping device is still including fixing linear guide II on the base and with II sliding fit's of linear guide II linear sliding blocks II, the bottom at clamping platform I is installed to linear sliding blocks II.

5. The automatic drawing machine of the double-needle sewing thread trimmer according to claim 1, wherein the fixed part of the linear reciprocating mechanism V comprises an eccentric wheel motor and an eccentric wheel, and the moving part comprises a straight groove connecting rod and a connecting rod;

the center of the eccentric wheel is connected with an output shaft of the eccentric wheel motor, and an eccentric column is arranged at a position deviating from the center;

the first end of the straight groove connecting rod is a straight sliding groove and is sleeved on the eccentric column, the second end of the straight groove connecting rod is rotatably connected with the first end of the connecting rod through a connecting shaft, and the second end of the connecting rod is fixedly connected with the light pulling platform I;

the linear reciprocating mechanism VI is a telescopic cylinder VI, a cylinder body is fixed on the polishing platform I, and a piston is connected with the polishing platform II;

the roller driving mechanism is a roller motor.

6. The automatic drawing machine of the double-needle sewing thread trimmer according to claim 5, wherein the eccentric wheel motor is fixed on a bracket III, and the bracket III is fixed on the base;

the polishing device also comprises a support IV fixed on the base, a fixed slide rail fixed on the support IV, a guide rail supporting block III fixed on the base, a linear guide rail III arranged on the guide rail supporting block III and a linear slide block III in sliding fit with the linear guide rail III, wherein the linear slide block III is arranged at the bottom of the polishing platform I;

the connecting rod passes through the horizontal groove of the fixed slide rail.

7. The automatic drawing machine of the double-needle sewing thread trimmer according to claim 6, wherein a support plate is fixed to the bottom end of the reversing column;

the supporting plate is connected with the drawing platform II in a sliding mode, the sliding direction is parallel to the axis of the roller, and a spring is arranged between the supporting plate and the drawing platform II.

8. The automatic drawing machine of the double-needle sewing thread trimmer according to claim 7, wherein a connecting disc is arranged on the drawing platform II opposite to the roller motor, a connecting column is arranged at the center of the connecting disc, and the connecting column is rotatably arranged in the roller in a penetrating way.

9. The automatic drawing machine of the double-needle sewing thread trimmer according to any one of claims 2 to 8, wherein the base is a cavity structure surrounded by a plurality of baffles, the top plate is provided with a feed opening, and a collecting groove is arranged in the cavity;

the feed opening is positioned below the double-needle sewing thread cutter clamped by the clamping mechanism;

the collecting tank is positioned below the feed opening, and a buffer layer is arranged in the collecting tank;

the telescopic cylinder and the rotary cylinder are both cylinders, and the clamping mechanism is a finger cylinder.

10. An automatic drawing method of a sewing machine with two needles for trimming a thread, characterized in that the automatic drawing machine of the sewing machine with two needles for trimming a thread is used for drawing and polishing an upper processing opening and a lower processing opening of the sewing machine with two needles, which comprises the following steps:

s1, charging: opening the top cover of the loading cartridge clip, loading a double-needle sewing thread trimmer into the clamping base, and covering the top cover of the loading cartridge clip;

s3, polishing: