Adjustable presser foot mechanism and bar tacking machine

Abstract

The utility model discloses an adjustable presser foot mechanism and bartacking machine relates to sewing device technical field, adjustable presser foot mechanism includes two sets of presser foot subassembly that sets up symmetrically, presser foot subassembly includes presser foot mounting plate, first adjusting lever, second adjusting lever and two presser foot block, first adjusting lever and second adjusting lever are movably provided presser foot mounting plate, and the presser foot mounting plate is provided with the presser foot mounting plate. The first adjusting rod and the second adjusting rod are rotatably connected, the two presser foot blocks are connected with the first adjusting rod and the second adjusting rod respectively, and the presser foot blocks are movably arranged on the presser foot mounting plate; the four presser foot blocks of the two presser foot assemblies form a presser foot space, and when the first adjusting rods and the second adjusting rods of the two presser foot assemblies rotate synchronously, the size of the presser foot space is changed. According to the adjustable presser foot mechanism, the size of the presser foot space can be easily changed, so that the sewing requirements of different fabrics in the market are met, the center of the presser foot space is not changed when the presser foot space is changed, the sewing center point does not need to be adjusted again, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing device technical field, especially in a kind of adjustable presser foot mechanism and knot machine. BACKGROUND

[0002] At present in sewing machine industry, the diversity of sewing material is one of important reasons restricting the development of sewing machine industry, due to the diversity of sewing material, leading to sewing machine when sewing, a sewing machine can only sew the phenomenon of a type of sewing material appears, if change a sewing material, need to change the configuration of original sewing machine, or replace another sewing machine.And the reason is that different sewing material has different thickness, elasticity.In sewing, the number of layers of sewing material will affect the selection of sewing machine.

[0003] In the sewing process, when needle drops through thin and elastic larger sewing material, the friction force received by needle is smaller, but cloth is larger in elasticity, and cloth will produce larger deformation when needle drops, thereby blocking needle hole, leading to failure;Contrary, when sewing material is thicker, the friction force received by needle is larger, due to the smaller elasticity of cloth, for thicker sewing material, it is divided into two possibilities, one is that the thickness of sewing material is moderate, and the elasticity of sewing material is smaller, so that the sewing condition reaches the best, at this time, the failure rate is minimum;Another is that the thickness of sewing material is too thick, leading to the possibility of relative sliding between cloth during sewing, and the phenomenon of pressing cloth is not pressed, thereby failure occurs.

[0004] The prior art discloses a kind of quick switching knot machine presser foot, by this scheme, presser foot can be quickly switched, so that the sewing of different cloth is realized, but it has the following problems in use process: one, when debugging, new presser foot assembly needs to be reinstalled after presser foot assembly is disassembled, operation process is more complex, since presser foot assembly is not very large, the risk of presser foot assembly loss is higher;Two, after installation, new presser foot assembly is not used after installation, but needs to be re-adjusted sewing center point.Therefore, there are still defects and deficiencies in prior art, how to provide a kind of adjustable presser foot mechanism and knot machine to solve the above problems is the technical problem that the person skilled in the art urgently needs to solve. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of adjustable presser foot mechanism and knot machine, solve the technical problem that the presser foot assembly of existing is inconvenient to use, and needs to be re-adjusted sewing center point after installation.

[0006] To achieve the above object, the utility model provides a kind of adjustable presser foot mechanism, comprising:

[0007] Two groups of symmetrically arranged presser foot assemblies, the presser foot assembly comprising a presser foot mounting plate, a first adjusting rod, a second adjusting rod and two presser foot blocks, the first adjusting rod and the second adjusting rod are movably arranged on the presser foot mounting plate, the first adjusting rod and the second adjusting rod are rotatably connected, two presser foot blocks are connected with the first adjusting rod and the second adjusting rod respectively, and the presser foot block is movably arranged on the presser foot mounting plate.

[0008] Among them, four presser foot blocks of two groups of presser foot assemblies form a presser foot space, when the first adjusting rod and the second adjusting rod in two groups of presser foot assemblies rotate synchronously, the size of the presser foot space changes.

[0009] Preferably, the first adjusting rod and the second adjusting rod are connected with the presser foot block through the first connecting piece, the presser foot mounting plate is provided with two first limiting grooves, the first connecting piece is connected with the first limiting groove in sliding mode, and two ends of the first connecting piece are connected with the first adjusting rod / the second adjusting rod and the presser foot block respectively.

[0010] Preferably, the first adjusting rod and the second adjusting rod are hinged through the second connecting piece, the presser foot mounting plate is provided with a second limiting groove, two first limiting grooves are symmetrically distributed about the second limiting groove, the extension direction of the second limiting groove is perpendicular to the extension direction of the first limiting groove, and the second connecting piece is connected with the second limiting groove in sliding mode.

[0011] Preferably, the presser foot block is fixedly connected with the presser foot mounting plate through a third connecting piece.

[0012] Preferably, the presser foot mounting plate is provided with two third limiting grooves, the extension direction of the third limiting groove is parallel to the extension direction of the first limiting groove, and the third connecting piece is connected with the presser foot mounting plate through the third limiting groove.

[0013] Preferably, the presser foot assembly further comprises a presser foot frame for connecting with a supply frame of a looping machine, and the presser foot frame is fixedly arranged on the presser foot mounting plate.

[0014] Preferably, the presser foot mounting plate is provided with a limiting block, and the limiting block is arranged on the same side of the presser foot block.

[0015] Preferably, the presser foot mounting plate is provided with a notch, and the notches of two presser foot mounting plates in two groups of presser foot assemblies form a rectangular structure.

[0016] Preferably, the part of the presser foot mounting plate located on both sides of the notch is provided with a recess.

[0017] The utility model also provides a looping machine comprising the adjustable presser foot mechanism provided by any of the above technical solutions.

[0018] With respect to the above background, the adjustable presser foot mechanism provided by the utility model, four presser foot blocks of two groups of presser foot assemblies form a presser foot space, when the first adjusting rod and the second adjusting rod rotate synchronously, the first adjusting rod and the second adjusting rod drive the presser foot blocks to move on the presser foot mounting plate, the size of the presser foot space changes, thereby being applicable to sewing different sewing materials, being simple to operate, convenient to use, not needing to be disassembled and replaced, and therefore not being easy to lose.

[0019] The knot tying machine can produce the same technical effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0021] Figure 1 The overall structure schematic diagram of the adjustable presser foot mechanism provided by the embodiments of the utility model is shown in the figure.

[0022] Figure 2 The exploded schematic diagram of the adjustable presser foot mechanism provided by the embodiments of the utility model is shown in the figure.

[0023] Figure 3 The structure schematic diagram of the presser foot mounting plate in the adjustable presser foot mechanism provided by the embodiments of the utility model is shown in the figure.

[0024] Figure 4 The structure schematic diagram of the presser foot mounting plate in the adjustable presser foot mechanism provided by the embodiments of the utility model is shown in the figure.

[0025] Figure 5 The structure schematic diagram of the presser foot space of the adjustable presser foot mechanism provided by the embodiments of the utility model is shown in the figure.

[0026] Figure 6 The structure schematic diagram of the presser foot space of the adjustable presser foot mechanism provided by the embodiments of the utility model is shown in the figure.

[0027] Figures 1 to 6Reference numerals: 1, presser foot frame; 2, presser foot mounting plate; 201, first limiting groove; 202, second limiting groove; 203, third limiting groove; 204, limiting block; 205, notch; 206, recess; 3, second adjusting rod; 4, first adjusting rod; 5, presser foot block; 6, first connecting piece; 7, second connecting piece; 8, third connecting piece; 9, fourth connecting piece. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely 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 the present application.

[0029] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] The adjustable presser foot mechanism and the knot tying machine provided by the present application can meet the sewing requirements of different fabrics on the market.

[0031] Reference should also be made to Figures 1 to 6 The adjustable presser foot mechanism provided by the present application comprises two groups of symmetrically arranged presser foot assemblies, each presser foot assembly comprising a presser foot mounting plate 2, a first adjusting rod 4, a second adjusting rod 3 and two presser foot blocks 5. The first adjusting rod 4 and the second adjusting rod 3 are movably arranged on the presser foot mounting plate 2, and the first adjusting rod 4 and the second adjusting rod 3 are rotatably connected. The two presser foot blocks 5 are connected to the first adjusting rod 4 and the second adjusting rod 3 respectively, and the presser foot blocks 5 are movably arranged on the presser foot mounting plate 2.

[0032] The four presser foot blocks 5 of the two groups of presser foot assemblies form a presser foot space. When the first adjusting rod 4 and the second adjusting rod 3 of the two groups of presser foot assemblies rotate synchronously, the size of the presser foot space changes.

[0033] When in use, the adjustable presser foot mechanism is installed on the feeding frame of the knotting machine, the two sets of presser foot assemblies are oppositely arranged, the four presser foot blocks 5 of the two sets of presser foot assemblies form a rectangular presser foot space, when the first adjusting rod 4 and the second adjusting rod 3 in the presser foot assembly rotate synchronously, the first adjusting rod 4 and the second adjusting rod 3 drive the presser foot blocks 5 to move on the presser foot mounting plate 2, the size of the presser foot space changes, thereby being able to be suitable for sewing different sewing materials, compared with the technical solution in the prior art which needs to disassemble the presser foot assembly and then re-install a new presser foot assembly, the operation is simple and the use is convenient, since the disassembly and replacement are not needed, the components are not easy to be lost. Moreover, since the first adjusting rod 4 and the second adjusting rod 3 synchronously drive the presser foot blocks 5 to move, although the size of the presser foot space changes, the center of the presser foot space does not change, thus it is not needed to re-adjust the sewing center point, the operation time is saved and the work efficiency is improved.

[0034] For reference Figures 1 to 6 The first adjusting rod 4 and the second adjusting rod 3 are connected with the presser foot blocks 5 through the first connecting pieces 6, the presser foot mounting plate 2 is provided with two first limiting grooves 201, the first connecting pieces 6 are slidably connected with the first limiting grooves 201, and the two ends of the first connecting pieces 6 are respectively connected with the first adjusting rod 4 / second adjusting rod 3 and the presser foot blocks 5.

[0035] The first adjusting rod 4 and the second adjusting rod 3 are located above the presser foot mounting plate 2, the presser foot blocks 5 are located below the presser foot mounting plate 2, the first connecting pieces 6 pass through the first limiting grooves 201 and the two ends thereof are respectively connected with the first adjusting rod 4 / second adjusting rod 3 and the presser foot blocks 5, when the first adjusting rod 4 and the second adjusting rod 3 rotate, the first connecting pieces 6 are driven to move, and the first limiting grooves 201 play a limiting and guiding role on the movement of the first connecting pieces 6.

[0036] In this embodiment, the first connecting pieces 6 are screws.

[0037] For reference Figures 1 to 6 The first adjusting rod 4 and the second adjusting rod 3 are hingedly connected through the second connecting pieces 7, the presser foot mounting plate 2 is provided with a second limiting groove 202, the two first limiting grooves 201 are symmetrically distributed about the second limiting groove 202, the extension direction of the second limiting groove 202 is perpendicular to the extension direction of the first limiting groove 201, and the second connecting pieces 7 are slidably connected with the second limiting groove 202.

[0038] When adjusting the size of the presser foot space formed by the four presser foot blocks 5, the second connecting pieces 7 are slid along the second limiting groove 202, the first adjusting rod 4 and the second adjusting rod 3 drive the first connecting pieces 6 to move along the first limiting groove 201, and then drive the presser foot blocks 5 to move, and the presser foot space is accordingly shrunk or expanded. In the above adjustment process, the second connecting pieces 7 in the presser foot assembly are always located on the perpendicular bisector of the connecting line of the two first connecting pieces 6, and thus the center of the presser foot space formed by the four presser foot blocks 5 is always unchanged.

[0039] Through the arrangement, the sewing center point does not need to be readjusted, the debugging time is saved, and the work efficiency is improved.

[0040] In addition, in the embodiment, the second connecting piece 7 is a headless screw, the first adjusting rod 4 and the second adjusting rod 3 are connected without protruding from the surface, the influence of height and weight is avoided, and the headless screw is particularly suitable for occasions requiring a flat appearance.

[0041] Please refer to Figures 1 to 6 The presser foot block 5 is fixedly connected to the presser foot mounting plate 2 through a third connecting piece 8. When the size of the presser foot space is adjusted, the presser foot block 5 is fixed to the presser foot mounting plate 2 through the third connecting piece 8, so that the presser foot block 5 is prevented from deviating or falling off during use.

[0042] In the embodiment, the third connecting piece 8 can be a flat screw, and when adjusting, the position of the presser foot block 5 can be adjusted through the first connecting piece 6 and the second connecting piece 7 by loosening the flat screw, without disassembling the flat screw, so that the operation is simple. The third connecting piece 8 can also adopt other screws, such as a cross screw, and the specific type is not limited.

[0043] Please refer to Figures 1 to 6 The presser foot mounting plate 2 is provided with two third limiting grooves 203, the extension direction of the third limiting grooves 203 is parallel to the extension direction of the first limiting grooves 201, and the third connecting piece 8 is connected to the presser foot mounting plate 2 through the third limiting grooves 203.

[0044] When adjusting the size of the presser foot space, the flat screw is loosened, the presser foot block 5 is moved along the first limiting grooves 201 under the driving of the first connecting piece 6, the flat screw moves along the third limiting grooves 203 along with the presser foot block 5 because the extension direction of the third limiting grooves 203 is parallel to the extension direction of the first limiting grooves 201, the flat screw is tightened after adjustment, and the presser foot block 5 is fixed to the presser foot mounting plate 2 again.

[0045] Please refer to Figures 1 to 6 The presser foot assembly further comprises a presser foot frame 1 for being connected to a feeding frame of a looping machine, and the presser foot frame 1 is fixedly arranged on the presser foot mounting plate 2. Specifically, the presser foot frame 1 is fixed to the presser foot mounting plate 2 through a fourth connecting piece 9, and when in use, the adjustable presser foot mechanism provided by the present application is installed on the feeding frame of the looping machine through two presser foot frames 1 of the two presser foot assemblies. In the embodiment, the fourth connecting piece 9 can adopt an inner hexagonal screw, the connection is reliable, and the assembly and disassembly are convenient. The fourth connecting piece 9 can also adopt a flat screw or a cross screw, and the specific type is not limited.

[0046] Please refer to Figures 1 to 6The foot mounting plate 2 is provided with a limiting block 204 which is arranged on the same side as the foot block 5. The extending direction of the limiting block 204 is parallel to the extending direction of the first limiting groove 201. When the first connecting piece 6 drives the foot block 5 to move along the first limiting groove 201, one side of the foot block 5 abuts against one side of the limiting block 204, and the limiting block 204 limits and guides the movement of the foot block 5.

[0047] In this way, the foot block 5 will not deviate during movement, and the center of the foot space formed by the foot block 5 will not change, so that the sewing center point does not need to be adjusted again, the operation time is saved, and the work efficiency is improved.

[0048] Please refer to Figures 1 to 6 The foot mounting plate 2 is provided with a notch 205, and the notches 205 of the two foot mounting plates 2 of the two foot assemblies form a rectangular structure. The notch 205 is located on the side where the two foot mounting plates 2 of the two foot assemblies are close to each other, and through the notch 205, the foot block 5 and the foot space formed by the foot block 5 can be easily observed.

[0049] Please refer to Figures 1 to 6 The part of the foot mounting plate 2 located on the two sides of the notch 205 is provided with a recess 206. Through the recess 206, the thickness of the part of the foot mounting plate 2 is smaller than the thickness of other parts, and the two recesses 206 of the two foot mounting plates 2 form a recess space. During sewing, the appearance of the stitches can be observed through the recess space, and the position of the sewing origin during sewing can be easily observed, so as to avoid affecting the sewing view.

[0050] In specific use, for thinner and more elastic fabrics, the foot space can be further compressed, so that the thin and elastic fabric is pressed more tightly during sewing, and the elastic deformation amount is smaller, which can greatly reduce the failure rate.

[0051] The adjustable foot mechanism provided by the utility model can easily change the size of the foot space formed by the foot block 5 by driving the foot block 5 to move through the first adjusting rod 4 and the second adjusting rod 3, thereby meeting the sewing requirements of different fabrics on the market. The position of the foot block 5 can be quickly adjusted to change the foot space without disassembly, and the operation is simple and the components will not be lost. Since the first adjusting rod 4 and the second adjusting rod 3 drive the foot block 5 to move synchronously, although the size of the foot space is changed, the center of the foot space is not changed, so that the sewing center point does not need to be adjusted again, the operation time is saved, and the work efficiency is improved. Since the structure is changed less, the adjustable foot mechanism can be applied to any looping machine, and the market acceptance is higher.

[0052] In addition to the adjustable presser foot mechanism disclosed in the above various embodiments, the utility model also provides a looping machine comprising the adjustable presser foot mechanism. Since the looping machine comprises all the features of the adjustable presser foot mechanism, the same technical effects can be achieved.

[0053] It should be noted that in the present specification, relational terms such as first and second are used solely to distinguish one entity from another entity, without necessarily requiring or implying any actual relationship or order between such entities.

[0054] The principles and implementation modes of the utility model are described by applying specific examples herein, and the above embodiment descriptions are only used to help understand the method of the utility model and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principles of the utility model, and these improvements and modifications also fall within the protection scope of the utility model.

Claims

1. An adjustable presser foot mechanism characterized by, The adjustable presser foot mechanism comprises: two groups of symmetrically arranged presser foot assemblies, each of which comprises a presser foot mounting plate, a first adjusting rod, a second adjusting rod and two presser foot blocks, the first adjusting rod and the second adjusting rod being movably arranged on the presser foot mounting plate, the first adjusting rod and the second adjusting rod being rotatably connected, the two presser foot blocks being connected to the first adjusting rod and the second adjusting rod respectively, and the presser foot blocks being movably arranged on the presser foot mounting plate; wherein four presser foot blocks of the two groups of presser foot assemblies form a presser foot space, and the size of the presser foot space changes when the first adjusting rod and the second adjusting rod of the two groups of presser foot assemblies rotate synchronously.

2. The adjustable foot mechanism of claim 1, wherein, The first adjusting rod and the second adjusting rod are connected to the presser foot blocks through a first connecting piece, the presser foot mounting plate is provided with two first limiting grooves, the first connecting piece is slidably connected to the first limiting grooves, and the two ends of the first connecting piece are connected to the first adjusting rod / second adjusting rod and the presser foot blocks respectively.

3. The adjustable foot mechanism of claim 2, wherein, The first adjusting rod and the second adjusting rod are hingedly connected through a second connecting piece, the presser foot mounting plate is provided with a second limiting groove, the two first limiting grooves are symmetrically distributed about the second limiting groove, the extension direction of the second limiting groove is perpendicular to the extension direction of the first limiting grooves, and the second connecting piece is slidably connected to the second limiting groove.

4. The adjustable foot mechanism of claim 3, wherein, The presser foot blocks are fixedly connected to the presser foot mounting plate through a third connecting piece.

5. The adjustable foot mechanism of claim 4, wherein, The presser foot mounting plate is provided with two third limiting grooves, the extension direction of the third limiting grooves is parallel to the extension direction of the first limiting grooves, and the third connecting piece is connected to the presser foot mounting plate through the third limiting grooves.

6. The adjustable foot mechanism of claim 1, wherein, The presser foot assembly further comprises a presser foot holder for being connected to a supply holder of a looping machine, and the presser foot holder is fixedly arranged on the presser foot mounting plate.

7. The adjustable foot mechanism of claim 1, wherein, The presser foot mounting plate is provided with a limiting block arranged on the same side as the presser foot blocks.

8. The adjustable foot mechanism of claim 1, wherein, The presser foot mounting plate is provided with a notch, and the notches of the two presser foot mounting plates of the two groups of presser foot assemblies form a rectangular structure.

9. The adjustable foot mechanism of claim 8, wherein, The portions of the presser foot mounting plate located on both sides of the notch are provided with recesses.

10. A knotter machine characterized by, The adjustable presser foot mechanism comprises any one of the presser foot mechanisms according to claims 1 to 9.

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