Adjustable full-automatic three-needle machine

Abstract

The utility model discloses an adjustable full-automatic three-needle machine, and relates to the technical field of sewing equipment. The feeding device comprises a workbench, an L-shaped frame is fixedly connected to the center of the top of the workbench and provided with three sets of needle bars through a sewing machine head, an auxiliary assembly is arranged at the front end of the top of the workbench, and feeding assemblies are arranged on the two sides of the workbench. Mounting frames in the auxiliary assembly are fixedly connected to the front end face of the workbench at equal intervals, and second lead screws are rotationally connected to the interiors of the mounting frames in the vertical direction. The mounting plate and the auxiliary roller are driven by the second lead screw and the L-shaped rod to ascend and descend, cloth is assisted by the auxiliary roller to move on the workbench, the problem that cloth is prone to abrasion in the prior art is solved, the third sliding block and the tensioning roller are driven by the U-shaped plate to ascend and descend, and therefore the tensioning degree of the cloth is adjusted through ascending and descending of the tensioning roller, and the work efficiency is improved. The problem that in the prior art, the tension degree of cloth is not convenient to adjust is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing equipment, in particular to an adjustable full-automatic three-needle sewing machine. Background Art

[0002] The full name of the three-needle machine is the three-needle five-thread interlock sewing machine. It is one of the most common sewing equipment. Its main components include the machine head, needle bar, presser foot, thread hook, feed dog and other parts. The machine head is driven by a motor to control the up and down movement of the needle, while the needle bar is responsible for pulling the three threads to achieve simultaneous sewing of three parts. It has the advantages of high efficiency, precision and practicality. It is widely used in sewing operations of clothing, shoes, hats, luggage and other products.

[0003] The existing document with publication number CN215209920U discloses a fully automatic three-needle machine, including a mounting platform, a sewing device, a motor, a mounting block, a driving roller, a sewing plate, a support block, a threaded rod, a mounting plate, a connecting plate, and a limiting sleeve; the sewing device and the sewing plate are both mounted on the upper end surface of the mounting platform; two sets of mounting blocks are respectively mounted on the mounting platform; both ends of the driving roller are respectively connected to the end surfaces of the mounting blocks that are close to each other; the motor is in transmission connection with the driving roller; the upper ends of the two sets of mounting plates are respectively connected to one end of multiple sets of connecting plates, and the end surfaces of the two sets of mounting plates that are close to each other are provided with multiple sets of edge pressing rollers; one end of the threaded rod is rotatably connected to one set of support blocks, and the other end of the threaded rod passes through the two sets of connecting plates and the other set of support blocks, and the outer circumference of the threaded rod is respectively provided with a first threaded portion and a second threaded portion;

[0004] However, it still has the following disadvantages in actual use:

[0005] 1. In the above-mentioned fully automatic three-needle sewing machine, mounting blocks are installed on both sides of the sewing plate on the end face of the mounting table, and the end faces of the mounting blocks close to each other are both rotated with drive rollers, which drive the fabric to move on the mounting table and sew it through the sewing equipment. However, during use, the fabric is in direct contact with the table surface of the mounting table, and the friction coefficient between the two is relatively large, which may cause the surface of the fabric to wear due to friction and other reasons during the movement;

[0006] 2. The fully automatic three-needle machine mentioned above has mounting blocks installed on both sides of the sewing plate on the upper end of the mounting table, and the end surfaces of the mounting blocks close to each other are both rotated with drive rollers, which drive the fabric to move on the mounting table and are sewn by the sewing equipment. However, during use, it is impossible to adjust the tension of the fabric, resulting in the fabric being in a loose state and affecting the accuracy of sewing.

[0007] To this end, we provide an adjustable fully automatic three-needle machine to solve the above problems. Utility Model Content

[0008] The purpose of the utility model is to provide an adjustable fully automatic three-needle machine, which drives the mounting plate and the auxiliary roller to rise and fall through the second screw rod and the L-shaped rod, and assists the movement of the cloth on the workbench through the auxiliary roller, thereby solving the existing problem that the cloth is easily worn, and drives the third slider and the tensioning roller to rise and fall through the U-shaped plate, thereby adjusting the tension of the cloth by raising and lowering the tensioning roller, thereby solving the existing problem that it is inconvenient to adjust the tension of the cloth.

[0009] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0010] The utility model is an adjustable fully automatic three-needle sewing machine, comprising a workbench, an L-shaped frame fixedly connected to the center of the top of the workbench, the L-shaped frame being provided with three sets of needle bars through the sewing machine head, an auxiliary component being provided at the top front end of the workbench, and a feeding component being provided on both sides of the workbench;

[0011] The mounting frame in the auxiliary assembly is fixedly connected to the front end surface of the workbench at equal intervals, the interior of the mounting frame is connected to a screw rod 2 in a vertical rotation, a slider 2 is provided on the outer wall of the screw rod 2, an L-shaped rod is fixedly connected to the rear end surface of the slider 2, the top end of the vertical support arm of the L-shaped rod is fixedly connected to a connecting plate, the upper surface and both sides of the connecting plate are respectively fixedly connected to the mounting plate and the U-shaped frame, the upper surface of the mounting plate is rotatably connected to multiple groups of auxiliary rollers at equal intervals, and the interior of the U-shaped frame is rotatably connected to pressure rollers;

[0012] The L-shaped blocks in the loading assembly are respectively fixedly connected to the front and rear ends of the outer walls on both sides of the workbench. A slide groove is vertically opened on the vertical support arm of the L-shaped block. The inside of the slide groove is vertically movably connected with a slider three. A tensioning roller is rotatably connected between the front and rear adjacent sliders three. A mounting bracket is fixedly connected to the outer wall of the side of the vertical support arm of the L-shaped block away from the workbench. A winding roller is rotatably connected between the front and rear adjacent mounting brackets. The top rear end of the workbench is movably connected to a U-shaped plate. The lower surfaces of the longitudinal support arms on both sides of the U-shaped plate are fixedly connected to connecting rods. The end of the connecting rod away from the U-shaped plate movably passes through the top of the mounting frame and is fixedly connected to the top of the slider three.

[0013] The utility model is further configured as follows: a through slot 1 is opened at the center position of the front end of the top of the workbench, a through slot 2 is opened at the front and rear ends on both sides of the through slot 1, the mounting plate and the U-shaped frame movably pass through the through slot 1 and the through slot 2 respectively, the pressure roller is located above the workbench, support plates are welded on both sides of the bottom of the workbench, support rods are welded on the lower surface of the support plates, and multiple groups of reinforcing rods are welded at equal intervals between adjacent support rods.

[0014] The present invention is further configured as follows: a mounting groove is provided at the bottom of the longitudinal arm of the L-shaped frame, the front end of the longitudinal arm of the L-shaped frame is fixedly connected to a driving motor 1 through a motor frame 1, the output shaft of the driving motor 1 rotates through the front end of the longitudinal arm of the L-shaped frame and is fixedly connected to a screw rod 1, the end of the screw rod 1 away from the driving motor 1 is rotatably connected to the inner rear end of the mounting groove, a slider 1 is threadedly sleeved on the outer wall of the screw rod 1, the bottom of the slider 1 is fixedly connected to an L-shaped plate, and the sewing machine head is fixedly connected to the front end surface of the vertical arm of the L-shaped plate.

[0015] The present invention is further configured as follows: both sides of the interior of the installation groove are fixedly connected with a limiting rod 1 along the longitudinal direction, and the limiting rod 1 respectively passes through both sides of the end surface of the slider 1.

[0016] The utility model is further configured as follows: two ends of the second screw rod respectively rotate through the top and bottom of the installation frame and are respectively fixedly connected to a hand wheel and a double-groove pulley, and the double-groove pulleys are connected through a belt transmission.

[0017] The utility model is further configured as follows: the front and rear ends of the upper surface of the mounting plate are fixedly connected to multiple sets of mounting seats at equal intervals from left to right, and the front and rear ends of the auxiliary rollers are respectively rotatably connected to the outer walls of the mounting seats on one side close to each other.

[0018] The utility model is further configured as follows: the front and rear ends of the winding roller are fixedly connected to a rotating shaft, the front rotating shaft at one end away from the winding roller rotates through the mounting frame at the front and is sleeved with a single-groove pulley 1, the lower part of the mounting frame at the front is fixedly connected to a driving motor 2 through a motor frame 2, a single-groove pulley 2 is sleeved on the output shaft of the driving motor 2, and the single-groove pulley 1 and the single-groove pulley 2 are connected by a belt 2 for transmission.

[0019] The utility model is further configured as follows: a hydraulic cylinder is fixedly connected to the center position of the rear end of the top of the workbench, the piston shaft of the hydraulic cylinder is fixedly connected to the bottom center position of the horizontal support arm of the U-shaped plate, and both sides of the rear end of the top of the workbench are fixedly connected to a limiting rod 2, the top end of the limiting rod 2 movably passes through the horizontal support arm of the U-shaped plate and is threadedly sleeved with a limiting nut.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model sets an auxiliary component, rotates the screw rod 2, and under the action of the threaded connection between the screw rod 2 and the slider 2, the slider 2 drives the L-shaped rod to move up and down, and the L-shaped rod drives the connecting plate to move up and down, and then the connecting plate drives the mounting plate and the U-shaped frame to move up and down, so that the auxiliary roller moves to the top of the workbench through the through slot 1. The friction coefficient between the cloth and the workbench is reduced by the auxiliary roller, which facilitates the movement of the cloth on the workbench, avoids wear of the cloth during movement, and thus facilitates the sewing work of the cloth.

[0022] 2. The utility model sets a feeding assembly, starts the hydraulic cylinder, and drives the U-shaped plate to move through the hydraulic cylinder. The U-shaped plate drives the slider three to move up and down through the connecting rod, thereby driving the tensioning roller to move up and down through the slider three, and then adjusting the tension of the cloth through the tensioning roller, which facilitates the adjustment of the tension of the sewing cloth, improves the sewing accuracy of the cloth, and facilitates sewing of the cloth.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of an adjustable fully automatic three-needle machine;

[0026] Figure 2 This is a schematic diagram of the structure of the workbench of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the L-shaped frame of the utility model;

[0028] Figure 4 This is a schematic structural diagram of the screw rod 1 of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the auxiliary components of the utility model;

[0030] Figure 6 This is a schematic structural diagram of the screw rod 2 of the utility model;

[0031] Figure 7 This is a schematic structural diagram of the L-shaped rod of the utility model;

[0032] Figure 8 This is a structural diagram of the mounting plate of the utility model;

[0033] Figure 9 This is a structural diagram of the feeding assembly of the utility model;

[0034] Figure 10 This is a schematic structural diagram of the L-shaped block of the utility model;

[0035] Figure 11 It is a structural schematic diagram of the winding roller of the utility model.

[0036] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0037] 100- workbench, 101- through slot 1, 102- through slot 2, 103- support plate, 104- support rod, 105- reinforcing rod, 200- L-shaped frame, 201- mounting slot, 202- screw rod 1, 202a- motor frame 1, 202b- drive motor 1, 202c- slider 1, 202d- L-shaped plate, 202e- limit rod 1, 203- sewing machine head, 204- needle bar, 300- auxiliary components, 301- mounting frame, 302- screw rod 2, 302a- handwheel, 302b- double groove pulley, 302c- belt 1, 303- L-shaped rod, 303a- slider 2, 303 b-connecting plate, 304-mounting plate, 304a-mounting seat, 305-U-shaped frame, 306-auxiliary roller, 307-pressure roller, 400-feeding assembly, 401-L-shaped block, 401a-chute, 401b-slider three, 401c-connecting rod, 402-tensioning roller, 403-mounting frame, 404-winding roller, 404a-rotating shaft, 404b-single-groove pulley one, 405-U-shaped plate, 405a-hydraulic cylinder, 405b-limiting rod two, 405c-limiting nut, 406-driving motor two, 406a-motor frame two, 406b-single-groove pulley two, 406c-belt two. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying 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.

[0039] Example 1

[0040] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, it is the first embodiment of the present invention, which provides an adjustable fully automatic three-needle machine, including a workbench 100. An auxiliary component 300 is provided at the top front end of the workbench 100, and the auxiliary component 300 includes a mounting frame 301, a second screw rod 302, an L-shaped rod 303, an auxiliary roller 306 and a pressure roller 307. The auxiliary roller 306 and the pressure roller 307 are driven to move by the second screw rod 302 and the L-shaped rod 303, and the auxiliary roller 306 and the pressure roller 307 are used to assist the movement of the fabric and fix the fabric, thereby solving the problem that the existing fabric is easily worn during the loading and unloading process.

[0041] Specifically, an L-shaped frame 200 is fixedly connected to the center position of the top of the workbench 100, and a sewing machine head 203 is movably connected to the L-shaped frame 200. Three groups of needle bars 204 are arranged at equal intervals at the bottom of the sewing machine head 203. A plurality of mounting frames 301 are fixedly connected to the front end surface of the workbench 100 at equal intervals. The interior of the mounting frame 301 is vertically rotatably connected to a second screw rod 302. A second slider 303a is threadedly sleeved on the outer wall of the second screw rod 302. An L-shaped rod 303 is fixedly connected to the rear end surface of the second slider 303a. The top end of the vertical support arm of the L-shaped rod 303 is fixedly connected to a connecting plate 303b. The upper surface and both sides of the connecting plate 303b are fixedly connected to a mounting plate 304 and a U-shaped frame 305 respectively. The upper surface of the mounting plate 304 rotates at equal intervals. There are multiple groups of auxiliary rollers 306 connected, and the interior of the U-shaped frame 305 is rotatably connected with a pressure roller 307. The installation frame 301 is used to install the screw rod 2 302. The screw rod 2 302 and the slider 2 303a are used to drive the L-shaped rod 303 to move. The L-shaped rod 303 is used to drive the mounting plate 304 and the U-shaped frame 305 to move. The connecting plate 303b is used to connect the L-shaped rod 303 and the mounting plate 304 and the U-shaped frame 305. The mounting plate 304 and the U-shaped frame 305 are used to install the auxiliary roller 306 and the pressure roller 307 respectively. The auxiliary roller 306 is used to assist the cloth to move on the workbench 100, and the pressure roller 307 is used to fix the cloth on the workbench 100.

[0042] Furthermore, a through slot 101 is provided at the center of the front end of the top of the workbench 100, and two through slots 102 are provided at the front and rear ends of both sides of the through slot 101. The mounting plate 304 and the U-shaped frame 305 are movable through the through slot 101 and the through slot 2 102 respectively. The pressure roller 307 is located above the workbench 100. Support plates 103 are welded to both sides of the bottom of the workbench 100. Support rods 104 are welded to the lower surface of the support plates 103. Multiple groups of reinforcing rods 105 are welded to adjacent support rods 104 at equal intervals.

[0043] The bottom of the longitudinal arm of the L-shaped frame 200 is provided with a mounting groove 201. The front end of the longitudinal arm of the L-shaped frame 200 is fixedly connected to the drive motor 1 202b through the motor frame 1 202a. The output shaft of the drive motor 1 202b rotates through the front end of the longitudinal arm of the L-shaped frame 200 and is fixedly connected to the screw rod 1 202. The end of the screw rod 1 202 away from the drive motor 1 202b is rotatably connected to the inner rear end of the mounting groove 201. A slider 1 202c is threadedly sleeved on the outer wall of the screw rod 1 202. The bottom of the slider 1 202c An L-shaped plate 202d is fixedly connected, and a sewing machine head 203 is fixedly connected to the front end surface of the vertical support arm of the L-shaped plate 202d. When the drive motor 1 202b is started, the output shaft of the drive motor 1 202b drives the screw rod 1 202 to rotate synchronously. Under the action of the threaded connection between the screw rod 1 202 and the slider 1 202c, the slider 1 202c drives the sewing machine head 203 to move longitudinally through the L-shaped plate 202d, and the sewing machine head 203 and the needle bar 204 are used to sew multiple threads on the fabric.

[0044] The inner sides of the mounting groove 201 are fixedly connected to the limiting rod 1 202e along the longitudinal direction. The limiting rod 1 202e passes through the two sides of the end surface of the slider 1 202c respectively.

[0045] The two ends of the screw rod 302 rotate through the top and bottom of the mounting frame 301 and are fixedly connected to the hand wheel 302a and the double groove pulley 302b respectively. The double groove pulleys 302b are connected by the belt 1 302c.

[0046] The front and rear ends of the upper surface of the mounting plate 304 are fixedly connected to multiple groups of mounting seats 304a at equal intervals from left to right, and the front and rear ends of the auxiliary rollers 306 are respectively rotatably connected to the outer walls of the mounting seats 304a on one side close to each other.

[0047] The operation process of this embodiment is as follows: first, the screw rod 2 302 is rotated forward by the hand wheel 302a, and under the action of the threaded connection between the screw rod 2 302 and the slider 2 303a, the L-shaped rod 303 drives the connecting plate 303b to rise. At this time, the connecting plate 303b drives the mounting plate 304 and the U-shaped frame 305 to move, thereby causing the auxiliary roller 306 and the pressure roller 307 to rise. The auxiliary roller 306 is used to reduce the friction coefficient between the cloth and the workbench 100, thereby facilitating the movement of the cloth. Then, when the cloth transportation is completed, the screw rod 2 302 is reversed, and the screw rod 2 302 drives the slider 2 303a downward. The L-shaped rod 303 drives the auxiliary roller 306 and the pressure roller 307 to move downward, and the auxiliary roller 306 moves completely to the inner side of the through groove 101, and the bottom of the pressure roller 307 respectively contacts the two ends of the cloth. Finally, the driving motor 202b is started, and the output shaft of the driving motor 202b drives the screw rod 202 to rotate synchronously. Under the action of the threaded connection between the screw rod 202 and the slider 202c, the slider 202c drives the sewing machine head 203 to move in the longitudinal direction through the L-shaped plate 202d, and the cloth is sewed by the sewing machine head 203 and the needle bar 204.

[0048] Example 2

[0049] See also Figure 1 、 Figure 9 、 Figure 10 and Figure 11 As shown, this is the second embodiment of the present invention, which is based on the previous embodiment, but is different from the previous embodiment in that: a loading assembly 400 is provided on both sides of the workbench 100, and the loading assembly 400 includes an L-shaped block 401, a tensioning roller 402, a mounting frame 403, a winding roller 404 and a U-shaped plate 405. The tensioning roller 402 is driven to rise and fall by the U-shaped plate 405, and the tensioning roller 402 is used to adjust the tension of the fabric, thereby solving the existing problem of inconvenience in adjusting the tension of the fabric for sewing.

[0050] Specifically, the L-shaped blocks 401 are respectively fixedly connected to the front and rear ends of the outer walls on both sides of the workbench 100, and a sliding groove 401a is vertically opened on the vertical support arm of the L-shaped block 401. The interior of the sliding groove 401a is vertically movably connected with a slider three 401b, and a tensioning roller 402 is rotatably connected between the front and rear adjacent sliders 401b. A mounting bracket 403 is fixedly connected to the outer wall of the vertical support arm of the L-shaped block 401 away from the workbench 100, and a winding roller 404 is rotatably connected between the front and rear adjacent mounting brackets 403. The top rear end of the workbench 100 is movably connected with a U-shaped plate 405, and the lower surfaces of the longitudinal support arms on both sides of the U-shaped plate 405 are fixedly connected with connecting rods 401c. The connecting rods 401c are away from the U One end of the template 405 movably passes through the top of the installation frame 301 and is fixedly connected to the top of the slider three 401b. The L-shaped block 401 is used to install structures such as the tensioning roller 402. The slide groove 401a is used to movably install the slider three 401b. The slider three 401b is used to install the tensioning roller 402 and drive the tensioning roller 402 to rise and fall. The connecting rod 401c is used to drive the slider three 401b to rise and fall. The tensioning roller 402 is used to adjust the tension of the cloth. The mounting frame 403 is used to install the winding roller 404. The winding roller 404 is used to roll and unwind the cloth, thereby realizing the loading and unloading of the cloth.

[0051] Furthermore, the front and rear ends of the winding roller 404 are fixedly connected to a rotating shaft 404a. The rotating shaft 404a at the front, which is away from the end of the winding roller 404, rotates through the mounting frame 403 at the front and is sleeved with a single-groove pulley 1 404b. The mounting frame 403 at the front is fixedly connected to a driving motor 2 406 through a motor frame 2 406a. The output shaft of the driving motor 2 406 is sleeved with a single-groove pulley 2 406b. A belt 2 404b is connected to the single-groove pulley 1 404b and the single-groove pulley 2 406b. 06c transmission connection, start the driving motor 2 406, the output shaft of the driving motor 2 406 drives the single-groove pulley 2 406b to rotate synchronously, and the single-groove pulley 2 406b drives the belt 2 406c to move, thereby driving the single-groove pulley 1 404b to rotate through the belt 2 406c, and the single-groove pulley 1 404b drives the rotating shaft 404a to rotate, thereby driving the winding roller 404 to rotate through the rotating shaft 404a, and the cloth is rolled up and unwound by the rotation of the winding roller 404;

[0052] A hydraulic cylinder 405a is fixedly connected to the center position of the top rear end of the workbench 100, and the piston shaft of the hydraulic cylinder 405a is fixedly connected to the bottom center position of the horizontal support arm of the U-shaped plate 405. Limit rod 2 405b is fixedly connected to both sides of the top rear end of the workbench 100. The top end of the limit rod 2 405b movably passes through the horizontal support arm of the U-shaped plate 405 and is threadedly provided with a limit nut 405c.

[0053] The rest of the structure is the same as that of the first embodiment.

[0054] The operation process of this embodiment is as follows: first, one end of the cloth is wound around the winding roller 404 on one side, and the other end of the cloth is wound around the winding roller 404 on the other side, and the driving motor 2 406 is started. The driving motor 2 406 drives the winding roller 404 to rotate, and the cloth moves to the workbench 100 through the tensioning roller 402, realizing the loading and unloading of the cloth, and then the hydraulic cylinder 405a is started, and the piston shaft of the hydraulic cylinder 405a drives the U-shaped plate 405 to move, and the U-shaped plate 405 drives the connecting rod 401c to move synchronously, and drives the slider 3 401b to move through the connecting rod 401c, so that the slider 3 401b drives the tensioning roller 402 to rise and fall, and the tension of the cloth is adjusted by the lifting and lowering of the tensioning roller 402.

[0055] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable fully automatic three-needle machine, comprising a workbench (100), characterized in that: An L-shaped frame (200) is fixedly connected to the center of the top of the workbench (100), and the L-shaped frame (200) is provided with three sets of needle bars (204) through a sewing machine head (203); an auxiliary component (300) is provided at the front end of the top of the workbench (100), and feeding components (400) are provided on both sides of the workbench (100); The mounting frame (301) in the auxiliary component (300) is fixedly connected to the front end surface of the workbench (100) at equal intervals, and the interior of the mounting frame (301) is connected to a second screw rod (302) in a vertical rotation direction, a second slider (303a) is threadedly sleeved on the outer wall of the second screw rod (302), and an L-shaped rod (303) is fixedly connected to the rear end surface of the second slider (303a), the top end of the vertical support arm of the L-shaped rod (303) is fixedly connected to a connecting plate (303b), and the upper surface and both sides of the connecting plate (303b) are respectively fixedly connected to a mounting plate (304) and a U-shaped frame (305), the upper surface of the mounting plate (304) is connected to multiple groups of auxiliary rollers (306) in a rotation direction at equal intervals, and the interior of the U-shaped frame (305) is connected to pressure rollers (307) in a rotation direction; The L-shaped block (401) in the loading assembly (400) is respectively fixedly connected to the front and rear ends of the outer walls on both sides of the workbench (100), and a slide groove (401a) is vertically opened on the vertical support arm of the L-shaped block (401), and a slider three (401b) is vertically movably connected inside the slide groove (401a), and a tensioning roller (402) is rotatably connected between the front and rear adjacent sliders three (401b), and the vertical support arm of the L-shaped block (401) is away from the outer wall of one side of the workbench (100). A mounting frame (403) is fixedly connected to the top, and a winding roller (404) is rotatably connected between the front and rear adjacent mounting frames (403). The top rear end of the workbench (100) is movably connected to a U-shaped plate (405), and the lower surfaces of the longitudinal arms on both sides of the U-shaped plate (405) are fixedly connected to connecting rods (401c). The end of the connecting rod (401c) away from the U-shaped plate (405) movably passes through the top of the mounting frame (301) and is fixedly connected to the top of the slider three (401b).

2. The adjustable fully automatic three-needle machine according to claim 1, characterized in that: A through slot 1 (101) is provided at the center of the front end of the top of the workbench (100), and a through slot 2 (102) is provided at the front and rear ends of both sides of the through slot 1 (101), the mounting plate (304) and the U-shaped frame (305) are movable through the through slot 1 (101) and the through slot 2 (102), respectively, and the pressure roller (307) is located above the workbench (100), and support plates (103) are welded on both sides of the bottom of the workbench (100), and support rods (104) are welded on the lower surface of the support plates (103), and multiple groups of reinforcing rods (105) are welded at equal intervals between adjacent support rods (104).

3. The adjustable fully automatic three-needle machine according to claim 1, characterized in that: The bottom of the longitudinal support arm of the L-shaped frame (200) is provided with a mounting groove (201), and the front end of the longitudinal support arm of the L-shaped frame (200) is fixedly connected to a driving motor (202b) through a motor frame (202a), the output shaft of the driving motor (202b) rotates through the front end of the longitudinal support arm of the L-shaped frame (200) and is fixedly connected to a screw rod (202), and the end of the screw rod (202) away from the driving motor (202b) is rotatably connected to the inner rear end of the mounting groove (201), a slider (202c) is threadedly sleeved on the outer wall of the screw rod (202), and the bottom of the slider (202c) is fixedly connected to an L-shaped plate (202d), and the sewing machine head (203) is fixedly connected to the front end surface of the vertical support arm of the L-shaped plate (202d).

4. The adjustable fully automatic three-needle machine according to claim 3, characterized in that: Both sides of the interior of the installation groove (201) are fixedly connected to a limiting rod (202e) in the longitudinal direction, and the limiting rod (202e) passes through both sides of the end surface of the slider (202c).

5. The adjustable fully automatic three-needle machine according to claim 1, characterized in that: The two ends of the second screw rod (302) are respectively rotated to pass through the top and bottom of the installation frame (301) and are respectively fixedly connected to a hand wheel (302a) and a double-groove pulley (302b), and the double-groove pulleys (302b) are connected through a belt (302c).

6. The adjustable fully automatic three-needle machine according to claim 1, characterized in that: The front and rear ends of the upper surface of the mounting plate (304) are fixedly connected to multiple groups of mounting seats (304a) at equal intervals from left to right, and the front and rear ends of the auxiliary rollers (306) are respectively rotatably connected to the outer walls of the mounting seats (304a) on one side close to each other.

7. The adjustable fully automatic three-needle machine according to claim 1, characterized in that: The front and rear ends of the winding roller (404) are fixedly connected to a rotating shaft (404a), and the rotating shaft (404a) at the front, which is away from the end of the winding roller (404), rotates through the mounting frame (403) at the front and is sleeved with a single-groove pulley (404b). The mounting frame (403) at the front is fixedly connected to a second driving motor (406) through a second motor frame (406a), and a second single-groove pulley (406b) is sleeved on the output shaft of the second driving motor (406). The first single-groove pulley (404b) and the second single-groove pulley (406b) are connected for transmission via a second belt (406c).

8. The adjustable fully automatic three-needle machine according to claim 1, characterized in that: A hydraulic cylinder (405a) is fixedly connected to the center position of the rear end of the top of the workbench (100), and the piston shaft of the hydraulic cylinder (405a) is fixedly connected to the center position of the bottom of the horizontal support arm of the U-shaped plate (405). Both sides of the rear end of the top of the workbench (100) are fixedly connected to the second limiting rod (405b), and the top end of the second limiting rod (405b) movably passes through the horizontal support arm of the U-shaped plate (405) and is threadedly sleeved with a limiting nut (405c).

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