Sewing apparatus with a discharge pulling device

Abstract

The application relates to a sewing device with a discharging traction device and belongs to the technical field of sewing devices. The sewing device comprises a rack, a traction belt, a first connecting arm and a second connecting arm, one end of the first connecting arm is hinged to one end of the second connecting arm, the other end of the first connecting arm is connected to the rack, and the other end of the second connecting arm abuts against a sewing material; the traction belt is sleeved on the outer peripheral walls of the first connecting arm and the second connecting arm, the first connecting arm is provided with a driving piece for driving the traction belt to rotate; and the first connecting arm is provided with an adjusting mechanism for adjusting the hinged angle between the first connecting arm and the second connecting arm. The application adjusts the distance between one end of the second connecting arm away from the first connecting arm and a sewing table through the adjusting assembly, so that the traction belt can conveniently traction the sewing materials with different thicknesses on the sewing table, the flexibility of the sewing device is effectively improved, and the quality of the sewing products is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewing equipment, and in particular to sewing equipment with a discharging traction device. BACKGROUND

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on a workpiece, interlacing or joining one or more layers of material. The sewing machine can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products such as leather, plastic, and paper. The stitches are neat, beautiful, flat, and firm, and the sewing speed is fast and easy to use. The movement of the fabric is entirely dependent on the cooperation of the feed dog and the presser foot. In actual production, due to the different materials being sewn, the movement of the fabric is sometimes uneven, and the stitches are sometimes irregular in length.

[0003] The existing sewing machine uses an electric traction mechanism, including a motor and a traction roller, to automatically pull the material to be sewn during the process of sewing the material.

[0004] The above-mentioned related technology has the following defects: for different thicknesses of sewing materials, the traction force of the traction roller on the sewing material is insufficient, which affects the quality of the sewing product. SUMMARY

[0005] In order to effectively improve the quality of the sewing product, the present application provides sewing equipment with a discharging traction device.

[0006] The purpose of the present application is to provide sewing equipment with a discharging traction device, which adopts the following technical solution:

[0007] Sewing equipment with a discharging traction device, comprising a frame, a traction belt, a first connecting arm and a second connecting arm, one end of the first connecting arm is hinged to one end of the second connecting arm, the other end of the first connecting arm is connected to the frame, and the other end of the second connecting arm abuts against the sewing material; the traction belt is sleeved on the outer peripheral wall of the first connecting arm and the second connecting arm, the first connecting arm is provided with a driving member for driving the traction belt to rotate; the first connecting arm is provided with an adjusting mechanism for adjusting the hinge angle between the first connecting arm and the second connecting arm.

[0008] By adopting the technical scheme, the driving member drives the traction belt to rotate, the other end of the second connecting arm abuts against the sewing material to automatically pull, so as to facilitate the sewing needle to continuously sew the sewing material, and effectively improve the quality of the sewing product; meanwhile, the adjusting mechanism adjusts the hinged angle between the first connecting arm and the second connecting arm, so as to adjust the distance between the end of the second connecting arm away from the first connecting arm and the sewing table, thereby facilitating the traction belt to pull the sewing material of different thicknesses on the sewing table, effectively improving the flexibility of the sewing equipment, and further improving the quality of the sewing product.

[0009] Optionally, the adjusting mechanism comprises an adjusting rod, the two sides of the first connecting arm are fixedly connected with connecting plates, the connecting plates are provided with adjusting grooves for the end of the adjusting rod to slide, and the adjusting grooves are perpendicular to the hinged shaft of the first connecting arm; the adjusting rod abuts against the side of the traction belt away from the first connecting arm, and the connecting plate is provided with a positioning assembly for positioning the adjusting rod.

[0010] By adopting the technical scheme, the adjusting rod slides along the adjusting groove to abut against the traction belt close to or away from the hinged shaft of the first connecting arm; when the traction belt is close to the hinged shaft of the first connecting arm, the tension of the traction belt increases to make the second connecting arm rotate upward, so as to reduce the hinged angle between the first connecting arm and the second connecting arm, thereby facilitating the traction of the sewing material with large thickness; when the traction belt is away from the hinged shaft of the first connecting arm, the tension of the traction belt decreases to make the second connecting arm rotate downward, so as to increase the hinged angle between the first connecting arm and the second connecting arm, thereby facilitating the traction of the sewing material with small thickness, and the operation is simple and convenient.

[0011] Optionally, the adjusting rod is rotatably connected with an abutting wheel abutting against the traction belt.

[0012] By adopting the technical scheme, when the traction belt rotates under the action of the driving member, the abutting wheel rolls on the traction belt, thereby reducing the resistance of the abutting wheel to the rotation of the traction belt, to improve the traction effect of the traction belt on the sewing material.

[0013] Optionally, the adjusting rod comprises a first rod and two second rods, the two ends of the first rod are provided with sliding grooves, and one end of the second rod is fixedly connected with a sliding block slidingly matched with the sliding groove; the positioning assembly comprises a pressing disc and a positioning disc fixedly connected to the second rod, the pressing disc is located on the side of the connecting plate away from the first rod, and the positioning disc is located on the side of the connecting plate close to the first rod; the surface of the positioning disc facing the connecting plate is provided with a positioning block, the connecting plate is provided with a plurality of positioning grooves evenly distributed along the length direction of the adjusting groove, and the positioning block is in plug-in cooperation with the positioning groove.

[0014] By adopting the technical scheme, the sliding block cooperates with the sliding groove, so that the position of the second rod on the first rod can be changed conveniently; when the hinged angle between the first connecting arm and the second connecting arm needs to be adjusted, the two pressing discs are pressed towards the middle, so that the positioning block is separated from the positioning groove, and the adjusting rod is pushed to slide along the adjusting groove; when the hinged angle between the first connecting arm and the second connecting arm is adjusted, the two pressing discs are pulled outwards, so that the positioning block is inserted into the corresponding positioning groove, and the operation is simple and convenient.

[0015] Optionally, the second rod is sleeved with a compression spring, one end of the compression spring is fixed on the pressing disc, and the other end of the compression spring is fixed on the connecting piece; the surface of the positioning block facing the traction belt is an inclined surface, and the groove wall of the positioning groove close to the traction belt is an inclined surface.

[0016] By adopting the technical scheme, when the positioning block is aligned with the positioning groove, the compression spring can automatically drive the positioning block to be inserted into the positioning groove; the surface of the positioning block and the groove wall of the positioning groove adopt inclined surfaces, when the adjusting rod moves towards the hinged shaft of the first connecting arm, the adjusting rod is pushed towards the hinged shaft of the first connecting arm, the inclined groove wall of the positioning groove cooperates with the inclined surface of the positioning block to separate the positioning block from the positioning groove; when the adjusting rod moves reversely, the two pressing discs are pressed towards the middle, so that the positioning block is separated from the positioning groove, and the tension of the traction belt reversely moves the adjusting rod.

[0017] Optionally, a pressure spring is arranged between the first connecting arm and the second connecting arm, one end of the pressure spring is fixed on the side surface of the first connecting arm, and the other end of the pressure spring is fixed on the side surface of the second connecting arm.

[0018] By adopting the technical scheme, the pressure spring can increase the reaction force when the second connecting arm rotates upwards, so that the traction effect of the traction belt on the sewing material is improved.

[0019] Optionally, an arc-shaped strip is fixedly connected to the rack, an arc-shaped groove is formed in the arc-shaped strip, and the arc-shaped groove is centered on the rotating shaft of the first connecting arm; a connecting rod is slidably connected to the side surface of the first connecting arm, the connecting rod is parallel to the rotating shaft of the first connecting arm, and one end of the connecting rod penetrates through the arc-shaped groove; a plug-in block is arranged on the connecting rod, and a plurality of plug-in grooves are formed in the arc-shaped strip and are uniformly distributed along the arc-shaped groove.

[0020] By adopting the technical scheme, the first connecting arm is rotated to move the second connecting arm away from the sewing table, so that the sewing material can be placed on the sewing table below the second connecting arm, and the traction belt can conveniently pull the sewing material; the plug-in block cooperates with the plug-in groove, so that the second connecting arm can be lifted and positioned, and the sewing material is placed more easily.

[0021] Optionally, one end of the connecting rod is fixed with a sliding disc, the sliding disc is located on the side of the arc-shaped strip away from the first connecting arm, the plug-in block is fixedly connected to the surface of the sliding disc facing the arc-shaped strip; the other end of the connecting rod is fixed with a locking disc, the locking disc is located on the side of the first connecting arm away from the arc-shaped strip; the connecting rod is sleeved with a fixing spring, one end of the fixing spring is fixedly connected to the locking disc, and the other end of the fixing spring is fixedly connected to the side of the first connecting arm.

[0022] By adopting the above technical scheme, pressing the locking disc can separate the plug-in block from the plug-in slot, and the first connecting arm is rotated to move the second connecting arm away from the sewing table; releasing the locking disc, the plug-in block is inserted into the aligned plug-in slot under the action of the fixing spring, and the position of the second connecting arm is positioned.

[0023] Optionally, the first connecting arm is rollingly connected with a cleaning roller for abutting against the surface of the traction belt.

[0024] By adopting the above technical scheme, the cleaning roller can clean the surface of the traction belt, reducing the pollution of the sewing material caused by the sundries on the traction belt.

[0025] Optionally, the rack comprises a sewing table and a mounting seat, the first connecting arm is connected to the mounting seat, a guide groove along the traction direction of the sewing material is formed in the sewing table, a guide block slidably matched with the guide groove is fixedly connected to the mounting seat, and a lead screw is rotatably connected in the guide groove and threadedly matched with the guide block.

[0026] By adopting the above technical scheme, the lead screw is driven to rotate, the guide block moves along the guide groove, and thus the position of the mounting seat on the sewing table is adjusted to adjust the second connecting arm to approach or move away from the sewing needle, and different sizes of the sewing material can be tractioned.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The driving member drives the traction belt to rotate, the other end of the second connecting arm abuts against the sewing material to automatically traction, so as to facilitate the sewing needle to continuously sew the sewing material, effectively improving the quality of the sewing product; at the same time, the adjusting mechanism adjusts the hinge angle between the first connecting arm and the second connecting arm, so as to adjust the distance between the end of the second connecting arm away from the first connecting arm and the sewing table, so as to facilitate the traction belt to traction the sewing material of different thicknesses on the sewing table, effectively improving the flexibility of the sewing equipment, and further improving the quality of the sewing product.

[0029] 2. The sliding block and sliding groove cooperate to easily change the position of the second rod on the first rod; when it is necessary to adjust the hinge angle between the first connecting arm and the second connecting arm, press the two pressing plates in the middle to separate the positioning block from the positioning groove, thereby pushing the pressing plates to make the adjusting rod slide along the adjusting groove; when the hinge angle between the first connecting arm and the second connecting arm is adjusted, pull the two pressing plates outward to make the positioning block insert into the corresponding positioning groove. The operation is simple and convenient. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a sewing device with a material discharge traction device according to an embodiment of this application;

[0031] Figure 2 This is a partial structural schematic diagram of an embodiment of this application, mainly used to show the connection diagram of the mounting base, the first connecting arm, the second connecting arm and the guide block;

[0032] Figure 3 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the connection diagram of the driving component, the first connecting arm, the second connecting arm, and the arc-shaped strip;

[0033] Figure 4 This is a partial structural cross-sectional view of an embodiment of this application, mainly used as a connection diagram of the adjustment mechanism and the positioning component.

[0034] Explanation of reference numerals in the attached drawings: 1. Frame; 101. Sewing table; 102. Mounting base; 2. Traction belt; 3. First connecting arm; 4. Second connecting arm; 5. Drive component; 6. Adjustment mechanism; 61. Adjustment rod; 611. First rod; 612. Second rod; 62. Connecting piece; 63. Adjustment groove; 7. Positioning assembly; 71. Pressing plate; 72. Positioning plate; 73. Positioning block; 74. Positioning groove; 8. Pressing roller; 9. Sliding groove; 10. Sliding block; 11. Compression spring; 12. Pressure spring; 13. Arc-shaped strip; 14. Arc-shaped groove; 15. Connecting rod; 16. Insertion block; 17. Insertion groove; 18. Sliding plate; 19. Locking plate; 20. Fixing spring; 21. Cleaning roller; 22. Guide groove; 23. Guide block; 24. Lead screw; 25. Sewing machine; 26. Power motor; 27. Foot pedal; 28. Linkage rod; 29. ​​Display screen; 30. Knob; 31. Drive roller; 32. Fixing plate. Detailed Implementation

[0035] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1-4 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0036] The embodiment of the present application discloses a sewing equipment with a discharging traction device. Referring to Figure 1 and Figure 2 , the sewing equipment comprises a rack 1, and the rack 1 comprises a sewing table 101 and a mounting base 102. In the embodiment, the sewing table 101 is composed of a support and a table top, the sewing machine 25 is fixed on the table top of the sewing table 101 by means of screws, the foot pedal 27 is rotatably connected to the support of the sewing table 101, the power motor 26 is fixedly connected to the support of the sewing table 101, and the linkage rod 28 is hinged between the free end of the foot pedal 27 and the output shaft of the power motor 26. The rotation of the foot pedal 27 or the starting of the power motor 26 can make the rotating disc of the sewing machine 25 rotate, so as to drive the needle of the sewing machine 25 to move up and down, thereby performing the sewing work on the sewing material on the table top of the sewing table 101.

[0037] Referring to Figure 1 and Figure 2 , the mounting base 102 is in the shape of L, the bottom of the mounting base 102 is integrally formed with two convex-shaped guide blocks 23, and two parallel guide grooves 22 are formed on the table top of the sewing table 101, the cross section of the guide groove 22 is in the shape of convex, the guide groove 22 is in sliding fit with the guide block 23, and the guide groove 22 is arranged along the traction direction of the sewing material. That is, the guide groove 22 cooperates with the guide block 23 to push the mounting base 102 to be close to or away from the sewing machine 25, thereby changing the distance between the mounting base 102 and the sewing machine 25.

[0038] Referring to Figure 1 and Figure 2 , in order to better adjust the distance between the mounting base 102 and the sewing machine 25, a lead screw 24 is rotatably connected in one of the guide grooves 22, and the lead screw 24 is parallel to the guide groove 22; a threaded hole (not marked in the figure) is formed in the guide block 23 in the guide groove 22, the lead screw 24 passes through the threaded hole and is in threaded fit with the guide block 23, and a knob 30 is integrally formed at one end of the lead screw 24 which is located outside the sewing table 101. The rotation of the knob 30 drives the lead screw 24 to rotate, so that the guide block 23 moves along the guide groove 22, thereby adjusting the position of the mounting base 102 on the sewing table 101.

[0039] Referring to Figure 1 and Figure 3In order to pull the material to be sewn, the first connecting arm 3 is rotatably connected to one side of the mounting base 102, and the first connecting arm 3 and the guide block 23 are located at two ends of the L-shaped mounting base 102 respectively. The second connecting arm 4 is hingedly connected to the end of the first connecting arm 3 away from the mounting base 102. The outer peripheral wall of the first connecting arm 3 and the second connecting arm 4 is sleeved with the pulling belt 2. The first connecting arm 3 comprises two first mounting plates and a driving roller 31 rotatably connected between the two first mounting plates. The second connecting arm 4 comprises two second mounting plates and a driving roller 31 rotatably connected between the two second mounting plates. The first mounting plate and the second mounting plate are connected by a hinge shaft. There are three driving rollers 31 on the first mounting plate and the second mounting plate. One driving roller 31 is located at the end of the two first mounting plates away from the second mounting plate. Another driving roller 31 is located at the end of the two second mounting plates away from the first mounting plate. The last driving roller 31 is located on the hinge shaft of the first mounting plate and the second mounting plate. The pulling belt 2 is sleeved on the three driving rollers 31.

[0040] Referring to Figure 1 and Figure 3 In order to drive the pulling belt 2 to rotate, the driving member 5 is fixedly connected in the mounting base 102. The driving member 5 is a driving motor. The output shaft of the driving motor is fixed on the rotating shaft of the driving roller 31 by key connection. The driving roller 31 is the one located at the end of the first mounting plate away from the second mounting plate. The driving motor drives the driving roller 31 to rotate, thereby driving the pulling belt 2 to rotate. The display screen 29 is fixed on the mounting base 102. The display screen 29 is a touch screen. The frequency of the driving motor can be adjusted through the touch screen, thereby adjusting the rotation rate of the pulling belt 2.

[0041] Referring to Figure 2 and Figure 3 In order to lift the free end of the second connecting arm 4, the fixed plate 32 is fixed on the mounting base 102 by welding. The fixed plate 32 is located below the driving motor. The arc-shaped strip 13 is fixed on the fixed plate 32 by welding. The arc-shaped slot 14 is formed in the arc-shaped strip 13 and has the output shaft of the driving motor as the center. The round holes are formed in the two first mounting plates. The connecting rod 15 is penetratingly and slidingly connected in the round holes, that is, the connecting rod 15 is slidingly connected to the side surface of the first connecting arm 3, and the connecting rod 15 is parallel to the output shaft of the driving motor. In addition, one end of the connecting rod 15 penetrates through the arc-shaped slot 14, and the end of the connecting rod 15 can slide along the length direction of the arc-shaped slot 14. That is, the rotation of the first connecting arm 3 will make the end of the connecting rod 15 slide in the arc-shaped slot 14. The length of the connecting rod 15 is greater than the sum of the distance between the two first mounting plates and the thickness of the arc-shaped strip 13.

[0042] Referring to Figure 2 and Figure 3, in order to fix the second connecting arm 4, the connecting rod 15 away from the arc-shaped strip 13 one end is fixed with locking disc 19 by welding, locking disc 19 can be abutted in the first mounting plate away from the arc-shaped strip 13 side. Connecting rod 15 close to the arc-shaped strip 13 one end is fixed with slip disc 18 by welding, slip disc 18 is located in the arc-shaped strip 13 away from the first mounting plate side. The side of slip disc 18 integrally formed with the plug-in block 16, plug-in block 16 is located in the surface of slip disc 18 towards the arc-shaped strip 13, arc-shaped strip 13 is provided with a plurality of plug-in groove 17 evenly distributed along the arc-shaped groove 14, plug-in block 16 can be inserted with plug-in groove 17. Through the cooperation of plug-in block 16 and plug-in groove 17, it is convenient to position the second connecting arm 4 after lifting, so that the placement of sewing material is more easy.

[0043] Referring to Figure 2 And Figure 3 , in order to better fix the second connecting arm 4, the connecting rod 15 is sleeved with fixed spring 20, one end of fixed spring 20 is fixedly connected to locking disc 19, the other end of fixed spring 20 is fixedly connected to the side of the first mounting plate away from the arc-shaped strip 13. Pressing locking disc 19 can make plug-in block 16 separate from plug-in groove 17, which is convenient for rotating first connecting arm 3 to make second connecting arm 4 away from the sewing table; releasing locking disc 19, plug-in block 16 will be inserted into the aligned plug-in groove 17 under the action of fixed spring 20, which is convenient for positioning the position of second connecting arm 4.

[0044] Referring to Figure 2 And Figure 3 , in order to improve the traction effect of the traction belt 2 on the sewing material, a pressure spring 12 is arranged between the first connecting arm 3 and the second connecting arm 4, one end of the pressure spring 12 is fixed to the side of the first mounting plate towards the arc-shaped strip 13, the other end of the pressure spring 12 is fixed to the side of the second mounting plate towards the arc-shaped strip 13; the reaction force of the second connecting arm 4 can be increased by the pressure spring 12 when it rotates upward, thereby improving the traction effect of the traction belt 2 on the sewing material. Two first mounting plates are connected with a cleaning roller 21, the circumferential surface of the cleaning roller 21 can abut on the surface of the traction belt 2; the surface of the traction belt 2 can be cleaned by the cleaning roller 21, reducing the pollution of the sundries on the traction belt 2 to the sewing material.

[0045] Referring to Figure 2 And Figure 4In order to adjust the hinge angle between the first connecting arm 3 and the second connecting arm 4, an adjustment mechanism 6 is provided on the first connecting arm 3. The adjustment mechanism 6 includes an adjustment rod 61. The outer side of the first mounting plate is fixedly connected to the connecting piece 62 by bolts. The connecting piece 62 is provided with an adjustment groove 63. The adjustment groove 63 allows the end of the adjustment rod 61 to slide. The adjustment groove 63 is perpendicular to the hinge axis of the first connecting arm 3. The adjustment rod 61 presses against the side of the traction belt 2 away from the drive roller 31. The adjustment rod 61 is rotatably connected to a pressure wheel 8 that abuts against the traction belt 2. When the traction belt 2 rotates under the action of the drive member 5, the pressure wheel 8 will roll on the traction belt 2, thereby reducing the resistance of the pressure wheel 8 to the rotation of the traction belt 2, so as to improve the traction effect of the sewing material on the traction belt 2.

[0046] It should be noted that the adjusting rod 61 slides along the adjusting groove 63 to press against the traction belt 2 as it approaches or moves away from the hinge shaft of the first connecting arm 3. When the traction belt 2 approaches the hinge shaft of the first connecting arm 3, the increased tension of the traction belt 2 causes the second connecting arm 4 to rotate upward, thereby reducing the hinge angle between the first connecting arm 3 and the second connecting arm 4, which facilitates the traction of thicker sewing materials. When the traction belt 2 moves away from the hinge shaft of the first connecting arm 3, the decreased tension of the traction belt 2 causes the second connecting arm 4 to rotate downward, thereby increasing the hinge angle between the first connecting arm 3 and the second connecting arm 4, which facilitates the traction of thinner sewing materials. The operation is simple and convenient.

[0047] Reference Figure 2 and Figure 4 The adjusting rod 61 includes a first rod 611 and two second rods 612. Both ends of the first rod 611 are provided with sliding grooves 9. One end of each second rod 612 is integrally formed with a sliding block 10, which slides in conjunction with the sliding groove 9. The engagement of the sliding block 10 with the sliding groove 9 facilitates changing the position of the second rod 612 on the first rod 611. A positioning assembly 7 is provided on the connecting piece 62. The positioning assembly 7 includes a pressing plate 71 and a positioning plate 72. Both the pressing plate 71 and the positioning plate 72 are fixed to the second rod 612 by welding. The pressing plate 71 is located on the side of the connecting piece 62 away from the first rod 611, and the positioning plate 72 is located on the side of the connecting piece 62 closer to the first rod 611.

[0048] Reference Figure 2 and Figure 4The positioning block 73 is integrally formed on the surface of the positioning disc 72 facing the connecting piece 62, the connecting piece 62 is provided with a plurality of positioning grooves 74 which are uniformly distributed along the length direction of the adjusting groove 63, and the positioning block 73 is inserted into the positioning groove 74. When the angle between the first connecting arm 3 and the second connecting arm 4 needs to be adjusted, the two pressing discs 71 are pressed towards the middle, so that the positioning block 73 is separated from the positioning groove 74, and then the pressing disc 71 is pushed to make the adjusting rod 61 slide along the adjusting groove 63; when the angle between the first connecting arm 3 and the second connecting arm 4 is adjusted, the two pressing discs 71 are pulled outwards, so that the positioning block 73 is inserted into the corresponding positioning groove 74, and the operation is simple and convenient.

[0049] With reference to Figure 2 and Figure 4 The compression spring 11 is sleeved on the second rod 612, one end of the compression spring 11 is fixed on the pressing disc 71, and the other end of the compression spring 11 is fixed on the connecting piece 62; the surface of the positioning block 73 facing the traction belt 2 is an inclined surface, and the groove wall of the positioning groove 74 close to the traction belt 2 is an inclined surface. When the positioning block 73 is aligned with the positioning groove 74, the compression spring 11 can automatically drive the positioning block 73 to be inserted into the positioning groove 74; the surface of the positioning block 73 and the groove wall of the positioning groove 74 are inclined surfaces. When the adjusting rod 61 moves towards the hinge shaft direction of the first connecting arm 3, the inclined groove wall of the positioning groove 74 cooperates with the inclined surface of the positioning block 73 to separate the positioning block 73 from the positioning groove 74; when the adjusting rod 61 moves reversely, the two pressing discs 71 are pressed towards the middle, so that the positioning block 73 is separated from the positioning groove 74, and the tension of the traction belt 2 reversely moves the adjusting rod 61.

[0050] The implementation principle of the sewing equipment with the discharging traction device is that the knob 30 is screwed to rotate the screw rod 24, so as to drive the mounting seat 102 to approach or move away from the sewing machine 25, the distance between the free end of the second connecting arm 4 and the needle of the sewing machine 25 is adjusted, and the traction belt 2 can better traction the sewing material. The pressing wheel 8 is pushed towards the hinge shaft direction of the first connecting arm 3, the inclined groove wall of the positioning groove 74 cooperates with the inclined surface of the positioning block 73 to separate the positioning block 73 from the positioning groove 74, so that the adjusting rod 61 slides in the adjusting groove 63; the angle between the first connecting arm 3 and the second connecting arm 4 is adjusted, the distance between the end of the second connecting arm 4 away from the first connecting arm 3 and the sewing table is adjusted, so that the traction belt 2 can traction the sewing material with different thicknesses on the sewing table; when the positioning block 73 is aligned with the positioning groove 74, the compression spring 11 can automatically drive the positioning block 73 to be inserted into the positioning groove 74.

[0051] The pressing locking disc 19 can separate the plug-in block 16 from the plug-in slot 17, facilitate rotating the first connecting arm 3 to make the free end of the second connecting arm 4 away from the sewing table, facilitate placing the sewing material under the second connecting arm 4; reversely rotating the first connecting arm 3 to make the free end of the second connecting arm 4 press on the sewing material, then releasing the locking disc 19, the plug-in block 16 will be inserted into the aligned plug-in slot 17 under the action of the fixing spring 20, facilitate the traction belt 2 to pull the sewing material. Finally, driving the traction belt 2 to rotate by the driving motor, the traction belt 2 will press on the sewing material to automatically pull, thereby facilitating the sewing needle to continuously sew the sewing material, effectively improving the quality of the sewing product.

[0052] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in the specification (including the abstract and drawings) can be replaced by other equivalent or similar purpose alternative features, unless specifically described. Therefore, equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A sewing machine with a material discharge traction device, characterized in that, The assembly includes a frame (1), a traction belt (2), a first connecting arm (3), and a second connecting arm (4). One end of the first connecting arm (3) is hinged to one end of the second connecting arm (4), and the other end of the first connecting arm (3) is connected to the frame (1). The other end of the second connecting arm (4) abuts against the sewing material. The traction belt (2) is sleeved on the outer periphery of the first connecting arm (3) and the second connecting arm (4). The first connecting arm (3) is provided with a drive member (5) for driving the traction belt (2) to rotate. The first connecting arm (3) is provided with an adjustment mechanism (6) for adjusting the hinge angle between the first connecting arm (3) and the second connecting arm (4). The adjustment mechanism (6) includes an adjustment rod (61), and connecting plates (62) are fixedly connected to both sides of the first connecting arm (3). The connecting plates (62) are provided with an adjustment groove (63) for the end of the adjustment rod (61) to slide. The adjustment groove (63) is perpendicular to the hinge axis of the first connecting arm (3). The adjustment rod (61) abuts against the side of the traction belt (2) away from the first connecting arm (3). The connecting plates (62) are provided with a positioning component (7) for positioning the adjustment rod (61). The adjusting rod (61) includes a first rod (611) and two second rods (612). The first rod (611) has sliding grooves (9) at both ends. One end of the second rod (612) is fixedly connected to a sliding block (10) that slides and engages with the sliding groove (9). The positioning assembly (7) includes a pressing plate (71) and a positioning plate (72) fixedly connected to the second rod (612). The pressing plate (71) is located on the side of the connecting piece (62) away from the first rod (611), and the positioning plate (72) is located on the side of the connecting piece (62) close to the first rod (611). The surface of the positioning plate (72) facing the connecting piece (62) is provided with a positioning block (73). The connecting piece (62) has multiple positioning grooves (74) evenly distributed along the length of the adjusting groove (63). The positioning block (73) and the positioning groove (74) are inserted into each other.

2. A sewing machine with a material discharge traction device according to claim 1, characterized in that, The adjusting rod (61) is rotatably connected to a pressure wheel (8) that abuts against the traction belt (2).

3. A sewing machine with a material discharge traction device according to claim 1, characterized in that, A compression spring (11) is sleeved on the second rod (612). One end of the compression spring (11) is fixed to the pressing plate (71), and the other end of the compression spring (11) is fixed to the connecting piece (62). The surface of the positioning block (73) facing the traction belt (2) is an inclined surface, and the groove wall of the positioning groove (74) near the traction belt (2) is an inclined surface.

4. A sewing machine with a material discharge traction device according to claim 1, characterized in that, A pressure spring (12) is provided between the first connecting arm (3) and the second connecting arm (4). One end of the pressure spring (12) is fixed to the side of the first connecting arm (3), and the other end of the pressure spring (12) is fixed to the side of the second connecting arm (4).

5. A sewing machine with a material discharge traction device according to claim 1, characterized in that, An arc-shaped strip (13) is fixedly connected to the frame (1), and an arc-shaped groove (14) is provided on the arc-shaped strip (13). The arc-shaped groove (14) is centered on the pivot of the first connecting arm (3). A connecting rod (15) is slidably connected to the side of the first connecting arm (3). The connecting rod (15) is parallel to the pivot of the first connecting arm (3), and one end of the connecting rod (15) passes through the arc-shaped groove (14). A plug-in block (16) is provided on the connecting rod (15), and multiple plug-in slots (17) are evenly distributed along the arc-shaped groove (14) on the arc-shaped strip (13).

6. A sewing machine with a material discharge traction device according to claim 5, characterized in that, One end of the connecting rod (15) is fixed with a sliding disk (18), which is located on the side of the arc strip (13) away from the first connecting arm (3). The plug block (16) is fixedly connected to the surface of the sliding disk (18) facing the arc strip (13). The other end of the connecting rod (15) is fixed with a locking disk (19), which is located on the side of the first connecting arm (3) away from the arc strip (13). A fixing spring (20) is sleeved on the connecting rod (15), one end of which is fixedly connected to the locking disk (19), and the other end of which is fixedly connected to the side of the first connecting arm (3).

7. A sewing machine with a material discharge traction device according to claim 1, characterized in that, A cleaning roller (21) for abutting against the surface of the traction belt (2) is slidably connected to the first connecting arm (3).

8. A sewing machine with a material discharge traction device according to claim 1, characterized in that, The frame (1) includes a sewing table (101) and a mounting base (102), and the first connecting arm (3) is rotatably connected to the mounting base (102); the sewing table (101) is provided with a guide groove (22) along the traction direction of the sewing material, and the mounting base (102) is fixedly connected with a guide block (23) that slides and cooperates with the guide groove (22); a lead screw (24) is rotatably connected in the guide groove (22), and the lead screw (24) is threadedly engaged with the guide block (23).

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