Sewing machine flat bed presser foot device

Abstract

The present application relates to sewing machine flat car presser foot device technical field, and disclose a kind of sewing machine flat car presser foot device, including the sewing machine installation pole of being installed on sewing machine, installation frame is arranged in the outside of sewing machine installation pole, the installation groove is opened in the inside of installation frame, clamping block is arranged in the side of installation frame away from sewing machine installation pole, the presser foot assembly in the below of installation frame.The sewing machine flat car presser foot device, by setting the cooperation between swing plate and top stick, and then when two groups of top stick are pushed up and move up, the left presser foot or right presser foot below will move up, left presser foot and right presser foot will not be in the same horizontal plane at this time, so it can adapt to the height of different cloth, so that the device can exert pressure on different thickness cloth, avoid uneven pressure situation, while the device increases the function of presser foot structure, without buying multiple presser foot structure can adapt to different cloth, increase the use range of the device, suitable for promotion.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewing machine flat car presser foot device, in particular to a sewing machine flat car presser foot device. BACKGROUND

[0002] In the textile industry, the presser foot of the sewing machine is an indispensable part of the feeding mechanism of the sewing machine. Various forms of presser foot play a very important role in the production process, such as special presser foot for invisible zipper and pleated sewing machine presser foot. The component for applying pressure to the surface of the fabric is very important in different sewing operations. At present, the presser foot is divided into metal presser foot and non-metal presser foot according to the material. The current sewing industry generally uses metal presser foot made of all steel material because the metal presser foot is durable, wear-resistant, widely applicable, not easy to deform, stable and has a long service life. In the production process of folding sewing shirt hems, various trouser leg cuffs, sleeve cuffs, skirt lining hems, and jeans pocket lip edges, the thickness of the fabric to be sewn on both sides is usually not the same.

[0003] The contact surface of the existing presser foot and the fabric is mostly flat, and the thickness of the fabric to be sewn is mostly not the same. Therefore, the height inconsistency caused by the different thicknesses of the fabric will cause one side of the presser foot to be unable to apply pressure. At this time, the side of the fabric that is not subjected to pressure will wrinkle, affecting the subsequent processing of the fabric and damaging the fabric. The existing method is to replace the left low presser foot or the right low presser foot to deal with the fabric with inconsistent height. Although this method can deal with the fabric with inconsistent height, it affects the normal work of the operator and increases the work intensity of the operator. At the same time, the need to purchase multiple types of presser foot increases the cost of sewing work, thereby reducing the use range of the presser foot and making it difficult to promote. SUMMARY

[0004] The purpose of the present application is to provide a sewing machine flat car presser foot device that solves the problem of single function of the presser foot in the background art and cannot adapt to fabric with inconsistent height. The application sets an adjustable presser foot assembly, which can adapt to fabric with inconsistent height and increase the use range of the device.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme:

[0006] The utility model provides a sewing machine flat car pressure foot device, including the sewing machine mounting rod installed on the sewing machine, the mounting frame is set up outside sewing machine mounting rod, the inside of mounting frame is opened the installation groove, the clamping block is set up in the side of mounting frame away from sewing machine mounting rod, clamping block is integrative and is formed, the inside of clamping block is opened the sliding slot and the clamping groove of mutual communication, sliding slot is inclined and is arranged, the shape of clamping groove inner wall and the shape of fixed shaft outside are adapted, the pressure foot assembly below mounting frame, pressure foot assembly is by left pressure foot and right pressure foot, one side of left pressure foot and right pressure foot all is provided with support assembly and moving rod, the connecting assembly of sliding setting between moving rod, one side of connecting assembly and clamping block are connected, the drive assembly of setting in the inside of mounting frame, two sets of adjusting assembly are set up respectively in the both sides of drive assembly, and the installation assembly of sliding setting in adjusting assembly and with support assembly parallel, the installation assembly includes and is provided with the push board with support assembly parallel, one side of push board is provided with the sliding plate, the side away from push board of sliding plate is provided with the support frame, the side close to mounting frame of support frame is provided with the top stick, and one end of top stick away from support frame is slidingly arranged in parallel groove.

[0007] Preferably, the connecting assembly includes a horizontal plate, a fixed shaft, and two sets of placement plates, both sets of the placement plates are fixedly arranged on one side of the horizontal plate, the fixed shaft is fixedly arranged between the two sets of placement plates, and the clamping block is slidingly connected to the outside of the fixed shaft.

[0008] Preferably, both sets of the support assemblies include two sets of support rods arranged on the left and right pressure feet respectively, the outside of the support rods is provided with a fixed plate, the outside of the support rods is provided with two sets of moving grooves, the inside of the support rods is provided with a first bearing, the middle of the first bearing is provided with a first threaded tube, the outside of the first threaded tube is screwed with a first sleeve, the outside of the first sleeve is provided with two sets of connecting plates, the side away from the first sleeve of the connecting plates penetrates through the moving grooves and is fixedly arranged with a movable plate slidingly arranged on the outside of the support rods.

[0009] Preferably, the adjusting assembly includes an operation table fixedly arranged with the drive assembly, the inside of the operation table is provided with a recess, the inner wall of the recess is provided with a self-locking assembly, the inner wall of the recess is fixedly provided with a central shaft, the outside of the central shaft is rotatably provided with a swing plate, one side of the swing plate is provided with a parallel groove, the inside of the parallel groove is slidingly provided with the installation assembly.

[0010] Preferably, the drive assembly includes a second bearing arranged in the mounting frame, the middle of the second bearing is provided with a second threaded tube, the outside of the second threaded tube is screwed with a second sleeve, the outside of the second sleeve is provided with two sets of sliding blocks, the side away from the second sleeve of the sliding blocks is fixedly arranged with the operation table.

[0011] Preferably, one side of the sliding plate is provided with a rectangular plate, the operating table is provided with a mounting plate on the side close to the sliding plate, the mounting plate is provided with a first spring on one side, and the first spring is fixedly arranged on the rectangular plate away from the mounting plate.

[0012] Preferably, the mounting plate is provided with a limiting rod on the side close to the first spring, and the rectangular plate and the push plate are slidingly arranged on the outer side of the limiting rod.

[0013] Preferably, the swing plate is arranged in an inclined manner, the raised part of the swing plate is parallel to the self-locking assembly, and the parallel groove is arranged on the side of the swing plate away from the self-locking assembly.

[0014] Preferably, the self-locking assembly comprises a balance block fixedly arranged on the inner wall of the groove, a top block slidingly arranged on the outer side of the balance block, a limiting plate fixedly arranged in the top block, an installation hole arranged in the limiting plate, a moving plate slidingly arranged in the top block, a push rod arranged on one side of the moving plate, a sliding rod arranged on the side of the moving plate away from the push rod, and the sliding rod is arranged through the top block and the operating table away from the moving plate, an activity groove arranged in the balance block, a clamping rod arranged on the inner wall of the activity groove, and a second spring arranged on the inner wall of the activity groove, and one end of the second spring is fixedly arranged in the clamping rod.

[0015] Preferably, the top block is provided with a mounting column on the side close to the swing plate, and the mounting column is rotatably arranged with a pulley on the outer side.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The sewing machine flat car presser foot device, by setting the cooperation between the swing plate and the top rod, when the two groups of top rods are pushed up and move up, the left presser foot or the right presser foot below will move up, at this time the left presser foot and the right presser foot will not be in the same horizontal plane, thereby the device can adapt to different heights of cloth, so that the device can exert pressure on cloth of different thicknesses, avoid uneven pressure, and increase the function of the presser foot structure, so that different cloths can be adapted without purchasing multiple presser foot structures, thereby increasing the use range of the device and being suitable for promotion.

[0018] 2. The sewing machine flat car presser foot device, by setting the cooperation between the clamping rod and the installation hole, when the top block pushes one side of the swing plate to swing, the clamping rod will be clamped into the installation hole, at this time the top block will be stably fixed at the current position, so that the swing plate stably maintains the current state, avoids the case that the top rod moves back after moving, and guarantees the normal use of the device.

[0019] 3. The presser foot device of this sewing machine flatbed sewing machine has a movable plate. After the push plate is engaged with the support rod, the movable plate can move to the bottom of the push plate to fix the push plate. This allows the push plate to stably push the fixed plate, and at the same time, the support component can be adapted to push plates of different specifications, which increases the adaptability of the device, reduces the cost of the device, and is suitable for promotion. Attached Figure Description

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 is a schematic diagram of the mounting bracket of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of the driving component of the present invention;

[0023] Figure 4 is a schematic diagram of the installation component of the present invention;

[0024] Figure 5 is a cross-sectional view of the operating table of the present invention;

[0025] Figure 6 is a cross-sectional view of the top block and the balance block of the present invention;

[0026] Figure 7 is a partial structural cross-sectional view of the balance block and clamping roller of the present invention;

[0027] Figure 8 is a schematic diagram of the presser foot assembly of the present invention;

[0028] Figure 9 is a top view of the structure of the left pressure foot of the present invention;

[0029] Figure 10 is a cross-sectional view of the support rod of the present invention;

[0030] Figure 11 is an exploded view of the structure of Figure 10 of the present invention;

[0031] Figure 12 is a schematic diagram of the structure of the connecting component of the present invention;

[0032] Figure 13 is a schematic diagram of the structure of the card block of the present invention.

[0033] Wherein: 1, mounting frame; 2, presser foot assembly; 201, left presser foot; 202, right presser foot; 203, moving rod; 204, blocking plate; 205, connecting assembly; 2051, horizontal plate; 2052, fixed shaft; 2053, placing plate; 2054, limiting hole; 206, supporting assembly; 2061, supporting rod; 2062, first bearing; 2063, movable plate; 2064, connecting plate; 2065, first sleeve; 2066, fixed plate; 2067, first threaded tube; 2068, first handle; 2069, moving groove; 3, clamping block; 4, mounting assembly; 401, push plate; 402, anti-dropping block; 403, limiting rod; 404, top stick; 405, mounting plate; 406, supporting frame; 407, first spring; 408, sliding plate; 409, rectangular plate; 5, adjusting assembly; 501, operation table; 502, groove; 503, self-locking assembly; 5031, top block; 5032, pulley; 5033, mounting column; 5034, handle; 5035, balancing block; 5036, clamping stick; 5037, limiting plate; 5038, push rod; 5039, mounting hole; 50310, moving plate; 50311, sliding rod; 50312, second spring; 50313, movable groove; 504, swing plate; 505, central shaft; 506, parallel groove; 6, sewing machine mounting rod; 7, mounting groove; 8, sliding groove; 9, clamping groove; 10, driving assembly; 1001, second threaded tube; 1002, sliding block; 1003, second sleeve; 1004, second bearing; 1005, second handle. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] Please refer to FIGS. 1-2, a sewing machine flat car presser foot device, comprising a sewing machine mounting rod 6 mounted on a sewing machine and a mounting frame 1 arranged outside the sewing machine mounting rod 6, the inside of the mounting frame 1 is provided with a mounting groove 7, a bolt is movably arranged in the mounting groove 7, the bolt penetrates through the mounting groove 7 and is threadedly connected in the sewing machine mounting rod 6, at this time the end of the bolt with larger diameter abuts against the mounting frame 1, and the bottom of the mounting frame 1 is welded with a clamping block 3.

[0036] Please refer to Figure 13, the card block 3 is integrally formed, the inside of the card block 3 is provided with a sliding slot 8 and a clamping slot 9 which are in communication, the sliding slot 8 is arranged in an inclined manner, the shape of the inner wall of the clamping slot 9 is matched with the shape of the outer side of the fixing shaft 2052, when the fixing shaft 2052 is located in the clamping slot 9, the card block 3 will connect the mounting rack 1 and the presser foot assembly 2.

[0037] Please refer to Figure 1, Figure 8 and Figure 9 It also comprises a presser foot assembly 2 located below the mounting rack 1, the presser foot assembly 2 comprises a left presser foot 201 and a right presser foot 202 which are spliced with each other, and the shapes of the left presser foot 201 and the right presser foot 202 are the same, and the left presser foot 201 and the right presser foot 202 are integrally formed, and the bottom of the left presser foot 201 and the right presser foot 202 is a plane.

[0038] At the same time, the top of the left presser foot 201 and the right presser foot 202 is bolted with a moving rod 203, and the bottom of the left presser foot 201 and the right presser foot 202 is provided with a recessed bolt hole, and the bolt is located in the bolt hole, so as to avoid that the bolt wears out the cloth.

[0039] When the left presser foot 201 or the right presser foot 202 moves upwards, the bottom of the left presser foot 201 and the right presser foot 202 will no longer be located in the same horizontal plane, so as to adapt to different thicknesses of the cloth.

[0040] Please refer to Figure 1, Figure 8 and Figure 12, the outer side of the two groups of moving rods 203 is slidingly connected with a connecting assembly 205, the connecting assembly 205 is composed of a horizontal plate 2051, a fixing shaft 2052 and two groups of placing plates 2053, wherein the horizontal plate 2051 is slidingly connected to the outer side of the moving rod 203, the two groups of placing plates 2053 are bolted to the top of the horizontal plate 2051, the fixing shaft 2052 is bolted between the two groups of placing plates 2053, and the card block 3 is movably clamped to the outer side of the fixing shaft 2052, at this time the fixing shaft 2052 is located in the clamping slot 9, the card block 3 can rotate around the fixing shaft 2052 as the axis, the mounting rack 1 is combined with the presser foot assembly 2 through the card block 3 and the connecting assembly 205, and when the card block 3 is separated from the fixing shaft 2052, the operator can conveniently disassemble the presser foot assembly 2.

[0041] And the inside of the horizontal plate 2051 is provided with two groups of limiting holes 2054, the moving rod 203 is slidably connected in the limiting hole 2054, the outer side of the moving rod 203 is threadedly connected with the blocking plate 204, the blocking plate 204 is a circular ring-shaped blocking plate, the diameter of the blocking plate 204 is greater than the hole diameter of the limiting hole 2054, at this time, the blocking plate 204 will block the overtravel of the moving rod 203, avoiding the moving rod 203 from being separated from the limiting hole 2054.

[0042] At the same time, please refer to Figure 8 From 11, the two sides of the left pressing foot 201 and the right pressing foot 202 are in a raised state, the left side of the left pressing foot 201 and the right pressing foot 202 is bolted with a support assembly 206, the support assembly 206 is composed of a support rod 2061, a fixed plate 2066, a first bearing 2062, a first threaded tube 2067, a first sleeve 2065, a movable plate 2063 and two groups of connecting plates 2064, wherein the outer side of the support rod 2061 is provided with two groups of moving grooves 2069 in communication with the inside of the support rod 2061, and the bottom end of the support rod 2061 is connected with the left pressing foot 201 or the right pressing foot 202 through bolts, the first bearing 2062 is fixed in the inside of the support rod 2061, the first sleeve 2065 is screwed on the outer side of the first threaded tube 2067, the first threaded tube 2067 is fixed in the middle of the first bearing 2062, the movable plate 2063 is slidably connected on the outer side of the support rod 2061, the fixed plate 2066 is welded on the outer side of the support rod 2061, and the fixed plate 2066 is located above the movable plate 2063, and the two groups of connecting plates 2064 are respectively welded on the two sides of the first sleeve 2065, and the side of the connecting plate 2064 away from the first sleeve 2065 is welded with the movable plate 2063.

[0043] Further, in order to facilitate the rotation of the first threaded tube 2067, a first handle 2068 is welded on the top end of the first threaded tube 2067, and after rotating the first handle 2068, the first threaded tube 2067 will rotate.

[0044] When the first threaded tube 2067 rotates, the first sleeve 2065 screwed on the outer side of the first threaded tube 2067 will linearly displace, and the movement of the first sleeve 2065 will drive the movable plate 2063 to displace through the connecting plate 2064, thereby by setting the movable movable plate 2063, after the push plate 401 is clamped into the support rod 2061, the movable plate 2063 can be moved to the bottom of the push plate 401 to fix the push plate 401, thereby enabling the push plate 401 to stably push the fixed plate 2066, and enabling the support assembly 206 to adapt to different specifications of the push plate 401, increasing the adaptability of the device and reducing the cost of the device, which is suitable for promotion.

[0045] Then, please refer to Figure 1 and Figure 3, also including the drive assembly 10 set in the mounting frame 1, the drive assembly 10 is composed of the second bearing 1004, the second threaded tube 1001, the second sleeve 1003 and two groups of sliders 1002, wherein the second bearing 1004 is fixed inside the mounting frame 1, the second sleeve 1003 is screwed on the outside of the second threaded tube 1001, one end of the second threaded tube 1001 is fixed in the middle of the second bearing 1004, and the two groups of sliders 1002 are welded on the two sides of the second sleeve 1003 respectively, while the side of the slider 1002 away from the second sleeve 1003 is bolted with the operation table 501.

[0046] Further, in order to facilitate the rotation of the second threaded tube 1001, the second handle 1005 is welded on the end of the second threaded tube 1001 away from the second bearing 1004, and the second threaded tube 1001 will rotate after the second handle 1005 is rotated.

[0047] After the clamping block 3 is clamped and fixed with the shaft 2052, the second handle 1005 is twisted to drive the second threaded tube 1001 to rotate, the rotation of the second threaded tube 1001 will drive the second sleeve 1003 to move horizontally, the movement of the second sleeve 1003 will drive the operation table 501 to move through the slider 1002, and the movement of the operation table 501 will drive the push plate 401 to displace by driving the top stick 404 and the mounting plate 405, so that the push plate 401 is clamped into the outside of the supporting rod 2061, and the further combination of the mounting frame 1 and the presser assembly 2 is completed.

[0048] Then, please refer to Figure 1, Figure 3 and Figure 5, also including two groups of adjusting assemblies 5, the adjusting assembly 5 includes the operation table 501, the swing plate 504, the center shaft 505 and the self-locking assembly 503, wherein the operation table 501 and the slider 1002 are bolted, the inside of the operation table 501 is provided with a recess 502, the center shaft 505 is welded on the inner wall of the recess 502, the swing plate 504 is rotatably arranged on the outside of the center shaft 505, and one side of the self-locking assembly 503 is welded on the inner wall of the recess 502.

[0049] Among them, the inside of the swing plate 504 is provided with a parallel groove 506, and the swing plate 504 is arranged obliquely, the raised part of the swing plate 504 is parallel to the self-locking assembly 503, and the parallel groove 506 is arranged on the side of the swing plate 504 away from the self-locking assembly 503, and one side of the mounting assembly 4 is slidably connected in the parallel groove 506.

[0050] Meanwhile, the outer side of the center shaft 505 is provided with two groups of discs, and the two groups of discs are located on the two sides of the swing plate 504, so that the discs can block the swing plate 504, avoiding the misalignment of the swing plate 504.

[0051] Then, referring to FIGS. 1, 3, 4 and 5, two groups of mounting assemblies 4 are further included, which are composed of a push plate 401, a sliding plate 408, a support frame 406 and a top rod 404 arranged in parallel with the support rod 2061, wherein the push plate 401 and the sliding plate 408 are welded, the support frame 406 is welded on the top of the sliding plate 408, one end of the top rod 404 is bolted on the rear side of the support frame 406, and the rear end of the top rod 404 is slidingly connected in the parallel groove 506.

[0052] When the swing plate 504 is pushed, it will swing around the center shaft 505, at which time the top rod 404 will be pushed upward by the bottom of the swing plate 504, and the upward movement of the top rod 404 will drive the sliding plate 408 and the push plate 401 upward by driving the support frame 406, the upward movement of the push plate 401 will drive the support rod 2061 upward by pushing the fixed plate 2066, and the upward movement of the support rod 2061 will drive the left pressing foot 201 or the right pressing foot 202 connected thereto upward.

[0053] Meanwhile, referring to FIGS. 3 to 4, one side of the sliding plate 408 is welded with a rectangular plate 409, and the side of the operation table 501 close to the sliding plate 408 is welded with a mounting plate 405, and the bottom of the mounting plate 405 is provided with a first spring 407, one end of the first spring 407 away from the mounting plate 405 is fixedly arranged on the rectangular plate 409, so that when the top rod 404 moves upward and drives the sliding plate 408 and the push plate 401 to move upward, the first spring 407 will be pressed by the rectangular plate 409, and when the top rod 404 is no longer pushed upward, the first spring 407 will drive the push plate 401 to move back by driving the rectangular plate 409 to move back, so that the push plate 401 can quickly return to the initial position, ensuring the reuse of the device.

[0054] And, in order to keep the balance of the push plate 401, a limiting rod 403 is welded on the side of the mounting plate 405 close to the first spring 407, and the rectangular plate 409 and the push plate 401 are both slidingly connected to the outside of the limiting rod 403, so that, on the one hand, the limiting rod 403 keeps the balance of the push plate 401 in movement, prevents the push plate 401 from shaking due to imbalance in movement, guarantees the normal displacement of the push plate 401, and on the other hand, the limiting rod 403 limits the direction of the push plate 401, prevents the device from failing due to misplacement of the push plate 401, and guarantees the normal use of the device.

[0055] The outside of the limiting rod 403 is provided with an anti-disengagement block 402, and the anti-disengagement block 402 is located at the bottom of the push plate 401, which will block the push plate 401 to avoid disengagement from the limiting rod 403.

[0056] Then, please refer to FIGS. 5-7, the self-locking assembly 503 is composed of a balancing block 5035 and a top block 5031, one side of the balancing block 5035 is welded in the inner wall of one side of the groove 502, the top block 5031 is slidingly connected to the outside of the balancing block 5035, the top of the top block 5031 is welded with a handle 5034, and the handle 5034 is slidingly connected to the outside of the operation table 501, when the handle 5034 is pushed to drive the top block 5031 to move horizontally, the top block 5031 will push the top of the swing plate 504 to make the swing plate 504 swing.

[0057] And, the inside of the top block 5031 is welded with a limiting plate 5037, the inside of the limiting plate 5037 is provided with a mounting hole 5039, the top of the balancing block 5035 is provided with a movable slot 50313, the bottom inner wall of the movable slot 50313 is fixed with a second spring 50312, the top end of the second spring 50312 is fixed with a clamping rod 5036, when the limiting plate 5037 moves with the top block 5031, the second spring 50312 will push the clamping rod 5036 to make it clamped into the mounting hole 5039 when the clamping rod 5036 is aligned with the mounting hole 5039, thereby through the cooperation between the clamping rod 5036 and the mounting hole 5039, when the top block 5031 pushes one side of the swing plate 504 to make it swing, the clamping rod 5036 will be clamped into the mounting hole 5039, at this time the top block 5031 will be stably fixed at the current position, so that the swing plate 504 is stably kept in the current state, avoiding the back movement of the top rod 404 after movement, and guaranteeing the normal use of the device.

[0058] Then, the inside of the top block 5031 is slidably connected with a moving plate 50310, the bottom of the moving plate 50310 is welded with a push rod 5038, and the push rod 5038 is parallel to the mounting hole 5039, the top of the moving plate 50310 is welded with a sliding rod 50311, and the top end of the sliding rod 50311 penetrates the handle 5034, after the clamping stick 5036 is clamped into the mounting hole 5039, the sliding rod 50311 can be pressed to drive the push rod 5038 to move downward by driving the moving plate 50310, at this time the push rod 5038 will extrude the clamping stick 5036 to make it separate from the mounting hole 5039, and then the top block 5031 is no longer fixed, and then the top block 5031 can be pushed to move back and no longer top the swing plate 504.

[0059] And, in order to avoid the damage caused by the friction between the top block 5031 and the swing plate 504, the side of the top block 5031 close to the swing plate 504 is fixed with a mounting column 5033, and the outer side of the mounting column 5033 is rotatably provided with a pulley 5032, so that when the top block 5031 is moved, the pulley 5032 will replace the top block 5031 to top the swing plate 504, avoiding the damage caused by the friction between the top block 5031 and the swing plate 504.

[0060] The sewing machine flat car presser foot device, by setting the cooperation between the swing plate 504 and the top stick 404, when the two groups of top sticks 404 are pushed up, the left presser foot 201 or the right presser foot 202 below will move up, at this time the left presser foot 201 and the right presser foot 202 will not be in the same horizontal plane, so that different heights of cloth can be adapted, so that the device can apply pressure to cloth of different thicknesses, avoiding uneven pressure, and the device increases the function of the presser foot structure, without the need to purchase multiple presser foot structures to adapt to different cloths, increasing the use range of the device, and suitable for promotion.

[0061] In use, the mounting frame 1 and the sewing machine mounting rod 6 are assembled by bolts, at this time the bolts penetrate the mounting slot 7 and are threadedly connected in the sewing machine mounting rod 6, at this time the end of the bolt with larger diameter abuts against the mounting frame 1, then the clamping block 3 is clamped into the outside of the fixed shaft 2052, then the second handle 1005 is twisted to drive the second threaded tube 1001 to rotate, the rotation of the second threaded tube 1001 will drive the second sleeve 1003 to move transversely, the movement of the second sleeve 1003 will drive the operating table 501 to move through the sliding block 1002, and the movement of the operating table 501 will drive the push plate 401 to move by driving the top stick 404 and the mounting plate 405, so that the push plate 401 is clamped into the outside of the supporting rod 2061.

[0062] Subsequently, the first handle 2068 is twisted to drive the first threaded pipe 2067 to rotate, which will drive the first sleeve 2065 outside the first threaded pipe 2067 to move linearly. The movement of the first sleeve 2065 will drive the movable plate 2063 to move through the connecting plate 2064. When the movable plate 2063 moves up, it will move to the bottom of the push plate 401 and cooperate with the fixed plate 2066 to fix the push plate 401. At this time, the assembly of the device is completed.

[0063] When it is necessary to change the height of the left pressing foot 201, the front handle 5034 of the two sets of handles 5034 is pushed, and when it is necessary to change the height of the right pressing foot 202, the rear handle 5034 of the two sets of handles 5034 is pushed. The movement of the handle 5034 will drive the top block 5031 to move and push the top of the swing plate 504. At this time, the swing plate 504 will swing around the center shaft 505. At this time, the top stick 404 will be pushed up by the bottom of the swing plate 504. The upward movement of the top stick 404 will drive the sliding plate 408 and the push plate 401 to move up by driving the support frame 406. The upward movement of the push plate 401 will drive the support rod 2061 to move up by pushing the fixed plate 2066. The upward movement of the support rod 2061 will drive the left pressing foot 201 or the right pressing foot 202 connected thereto to move up, completing the adjustment of the left pressing foot 201 or the right pressing foot 202.

[0064] Moreover, when the movement of the top block 5031 aligns the clamping stick 5036 with the mounting hole 5039, the second spring 50312 will drive the clamping stick 5036 to clamp into the mounting hole 5039. In this way, the clamping stick 5036 can clamp the top block 5031 by clamping the limiting plate 5037, so that the top block 5031 is fixed at the current position. The fixation of the top block 5031 will prevent the swing plate 504 from driving the top stick 404 to move down, completing the fixation of the swing plate 504.

[0065] Finally, when the height of the left foot 201 or the right foot 202 needs to be adjusted, the sliding rod 50311 is pressed to drive the moving plate 50310 to move downward, at this time the push rod 5038 will squeeze the clamping rod 5036 to make it disengage from the mounting hole 5039, the top block 5031 is no longer fixed, then the top block 5031 is pushed to move back and no longer pushes the swing plate 504, at this time the first spring 407 will drive the rectangular plate 409 to move back, and then drive the push plate 401 to move back, so that the push plate 401 can quickly return to the initial position, at this time the push plate 401 no longer pushes the fixed plate 2066, then the supporting rod 2061 will move downward due to gravity, the supporting rod 2061 returns to the initial position, the adjustment is completed, at the same time the top block 5031 abuts against the swing plate 504, so that the swing plate 504 cannot continue to swing, and the top rod 404 is stably kept at the current position.

[0066] At the same time, when disassembling the presser foot assembly 2, the second handle 1005 is reversed to drive the second threaded tube 1001 to reverse, at this time the second sleeve 1003 will drive the sliding block 1002 to move back, the movement of the sliding block 1002 will drive the operation table 501 to move back, the movement of the operation table 501 will drive the push plate 401 to move through the way of driving the top rod 404 and the mounting plate 405, so that the push plate 401 moves back and is no longer located outside the supporting rod 2061, then the presser foot assembly 2 can be disassembled.

[0067] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sewing machine flat bed presser foot device characterized by, The utility model relates to a sewing machine installation pole (6) is installed on the sewing machine, the installation frame (1) is arranged outside the sewing machine installation pole (6), the inside of installation frame (1) is provided with the installation groove (7), the clamping block (3) is arranged in the installation frame (1) side away from the sewing machine installation pole (6), the presser foot assembly (2) is located below the installation frame (1), and the presser foot assembly (2) is composed of left presser foot (201) and right presser foot (202), and the one side of left presser foot (201) and right presser foot (202) is provided with support assembly (206) and moving rod (203), support assembly (206) includes two sets of support rods (2061) that are arranged on left presser foot (201) and right presser foot (202) respectively, the connecting assembly (205) is slidably arranged between moving rod (203), and the one side of connecting assembly (205) is clamped with clamping block (3), the drive assembly (10) is arranged in the inside of installation frame (1), two sets of adjusting assembly (5) are arranged on the two sides of drive assembly (10) respectively, adjusting assembly (5) includes the operation table (501) fixed with drive assembly (10), the inside of operation table (501) is provided with recess (502), and the inner wall of recess (502) is provided with self-locking assembly (503), the inner wall of recess (502) is fixed with center shaft (505), the outer side of center shaft (505) is rotatably provided with swing plate (504), swing plate (504) is arranged obliquely, the part of swing plate (504) and self-locking assembly (503) are parallel, the one side of swing plate (504) is provided with parallel groove (506), and parallel groove (506) is arranged on the one side of swing plate (504) away from self-locking assembly (503), self-locking assembly (503) includes the balance block (5035) fixed in the inner wall of recess (502), the outer side of balance block (5035) is slidably provided with top block (5031), the inside of top block (5031) is fixed with limiting plate (5037), the inside of limiting plate (5037) is provided with mounting hole (5039), the inside of top block (5031) is slidably provided with moving plate (50310), the one side of moving plate (50310) is provided with push rod (5038), the one side of moving plate (50310) away from push rod (5038) is provided with sliding rod (50311), the one end of sliding rod (50311) away from moving plate (50310) penetrates top block (5031) and operation table (501), the inside of balance block (5035) is provided with movable slot (50313), the inner wall of movable slot (50313) is provided with clamping stick (5036), the inner wall of movable slot (50313) is provided with second spring (50312), and one end of second spring (50312) is fixedly arranged in the inside of clamping stick (5036), and the utility model relates to a sewing machine installation pole (6) is installed on the sewing machine, the installation frame (1) is arranged outside the sewing machine installation pole (6), the inside of installation frame (1) is provided with the installation groove (7), the clamping block (3) is arranged in the installation frame (1) side away from the sewing machine installation pole (6), the presser foot assembly (2) is located below the installation frame (1), and the presser foot assembly (2) is composed of left presser foot (201) and right presser foot (202), and the one side of left presser foot (201) and right presser foot (202) is provided with support assembly (206) and moving rod (203), support assembly (206) includes two sets of support rods (2061) that are arranged on left presser foot (201) and right presser foot (202) respectively, the connecting assembly (205) is slidably arranged between moving rod (203), and the one side of connecting assembly (205) is clamped with clamping block (3), the drive assembly (10) is arranged in the inside of installation frame (1), two sets of adjusting assembly (5) are arranged on the two sides of drive assembly (10) respectively, adjusting assembly (5) includes the operation table (501) fixed with drive assembly (10), the inside of operation table (501) is provided with recess (502), and the inner wall of recess (502) is provided with self-locking assembly (503), the inner wall of recess (502) is fixed with center shaft (505), the outer side of center shaft (505) is rotatably provided with swing plate (504), swing plate (504) is arranged obliquely, the part of swing plate (504) and self-locking assembly (503) are parallel, the one side of swing plate (504) is provided with parallel groove (506), and parallel groove (506) is arranged on the one side of swing plate (504) away from self-locking assembly (503), self-locking assembly (503) includes the balance block (5035) fixed in the inner wall of recess (502), the outer side of balance block (5035) is slidably provided with top block (5031), the inside of top block (5031) is fixed with limiting plate (5037), the inside of limiting plate (5037) is provided with mounting hole (5039), the inside of top block (5031) is slidably provided with moving plate (50310), the one side of moving plate (50310) is provided with push rod (5038), the one side of moving plate (50310) away from push rod (5038) is provided with sliding rod (50311), the one end of sliding rod (50311) away from moving plate (50310) penetrates top block (5031) and operation table (501), the inside of balance block (5035) is provided with movable slot (50313), the inner wall of movable slot (50313) is provided with clamping stick (5036), the inner wall of movable slot (50313) is provided with second spring (50312), and one end of second spring (50312) is fixedly arranged in the inside of clamping stick (5036), ​ ​ ​ ​ ​ ​ ​ ​ ​ The installation assembly (4) is arranged in parallel with the support assembly (206) in the parallel groove (506) and is arranged in parallel with the support assembly (206), the installation assembly (4) comprises a push plate (401) arranged in parallel with the support assembly (206), one side of the push plate (401) is provided with a sliding plate (408), the push plate (401) can be clamped into the support rod (2061), one side of the sliding plate (408) away from the push plate (401) is provided with a support frame (406), one side of the support frame (406) close to the mounting frame (1) is provided with a top rod (404), and one end of the top rod (404) away from the support frame (406) is arranged in the parallel groove (506) in a sliding mode.

2. The sewing machine flat bed presser foot device according to claim 1, characterized in that: The connecting assembly (205) comprises a horizontal plate (2051), a fixed shaft (2052) and two groups of placing plates (2053), the two groups of placing plates (2053) are fixedly arranged on one side of the horizontal plate (2051), the fixed shaft (2052) is fixedly arranged between the two groups of placing plates (2053), and the clamping block (3) is slidably clamped on the outer side of the fixed shaft (2052).

3. The sewing machine flat bed presser foot device according to claim 1, characterized in that: The outer side of the support rod (2061) is provided with a fixed plate (2066), the outer side of the support rod (2061) is provided with two groups of moving grooves (2069), the inner side of the support rod (2061) is provided with a first bearing (2062), the middle part of the first bearing (2062) is provided with a first threaded pipe (2067), the outer side of the first threaded pipe (2067) is screwed with a first sleeve pipe (2065), the outer side of the first sleeve pipe (2065) is provided with two groups of connecting plates (2064), and the connecting plates (2064) away from the first sleeve pipe (2065) pass through the moving grooves (2069) and are fixedly arranged with the movable plate (2063) arranged on the outer side of the support rod (2061).

4. The sewing machine flat bed presser foot assembly according to claim 1, wherein: The driving assembly (10) comprises a second bearing (1004) arranged in the mounting frame (1), the middle part of the second bearing (1004) is provided with a second threaded pipe (1001), the outer side of the second threaded pipe (1001) is screwed with a second sleeve pipe (1003), the outer side of the second sleeve pipe (1003) is provided with two groups of sliding blocks (1002), and the sliding blocks (1002) away from the second sleeve pipe (1003) are fixedly arranged with the operation table (501).

5. The sewing machine flat bed presser foot assembly according to claim 1, wherein: One side of the sliding plate (408) is provided with a rectangular plate (409), one side of the operation table (501) close to the sliding plate (408) is provided with a mounting plate (405), one side of the mounting plate (405) is provided with a first spring (407), and one end of the first spring (407) away from the mounting plate (405) is fixedly arranged on the rectangular plate (409).

6. The sewing machine flat bed presser foot assembly according to claim 5, wherein: One side of the mounting plate (405) close to the first spring (407) is provided with a limiting rod (403), and the rectangular plate (409) and the push plate (401) are arranged on the outer side of the limiting rod (403) in a sliding mode.

7. The sewing machine flat bed presser foot assembly according to claim 1, wherein: The top block (5031) is provided with a mounting column (5033) near one side of the swing plate (504), and the outer side of the mounting column (5033) is rotationally provided with a pulley (5032).

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