Adjustable presser foot mechanism and bar tacking machine

Abstract

The utility model discloses an adjustable presser foot mechanism and a bar tacking machine, and relates to the technical field of sewing devices, the adjustable presser foot mechanism comprises a first presser foot arm, a second presser foot arm and two symmetrically arranged presser foot mounting plates; sliding grooves are formed in the presser foot mounting plates, and the sliding grooves in the two presser foot mounting plates are oppositely arranged; the first presser foot arm and the second presser foot arm are movably arranged on the presser foot mounting plate through sliding grooves, a presser foot space is formed between the first presser foot arm and the second presser foot arm, first connecting pieces are arranged at the two ends of the first presser foot arm, second connecting pieces are arranged at the two ends of the second presser foot arm, and the first connecting pieces are in sliding connection with the second presser foot arm. The second connecting piece is in sliding connection with the first presser foot arm. The adjustable presser foot mechanism is easy to operate and convenient to use, the first connecting piece and the second connecting piece slide along the second presser foot arm and the first presser foot arm respectively, the distance between the first presser foot arm and the second presser foot arm can be adjusted, the size of the presser foot space can be changed, and the adjustable presser foot mechanism is suitable for sewing different sewing materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical field especially relates to 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 one 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, cloth will produce larger deformation when needle drops, to block needle hole, leading to failure occurs;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 kinds of 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;The other is that the thickness of sewing material is too thick, leading to relative sliding between cloth during sewing, and the phenomenon that cloth is not pressed, so that failure occurs.

[0004] The prior art discloses a kind of quickly switched knot machine presser foot, by this scheme, presser foot can be quickly switched, to realize the sewing of different cloth, but it has the following problems in use process: 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.Therefore, there are still defects and deficiencies in the prior art, how to provide a kind of operation simple adjustable presser foot mechanism and knot machine is the technical problem that the person skilled in the art urgently solves. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of adjustable presser foot mechanism, solve the technical problem that the presser foot assembly needs to be reinstalled after disassembly in the prior art when sewing different cloth, operation is complex.

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

[0007] Two symmetrical presser foot mounting plates, the presser foot mounting plate is equipped with sliding slot;

[0008] A first presser foot arm and a second presser foot arm are movably arranged on the presser foot mounting plate through the sliding groove, a presser foot space is formed between the first presser foot arm and the second presser foot arm, both ends of the first presser foot arm are provided with a first connecting piece, both ends of the second presser foot arm are provided with a second connecting piece, the first connecting piece is slidably connected with the second presser foot arm, and the second connecting piece is slidably connected with the first presser foot arm.

[0009] Preferably, the first connecting piece and the second connecting piece are provided with continuously distributed tooth grooves on the side close to each other.

[0010] Preferably, the first presser foot arm and the second presser foot arm are movably arranged on the presser foot mounting plate through the sliding groove, a presser foot space is formed between the first presser foot arm and the second presser foot arm, both ends of the first presser foot arm are provided with a first connecting piece, both ends of the second presser foot arm are provided with a second connecting piece, the first connecting piece is slidably connected with the second presser foot arm, and the second connecting piece is slidably connected with the first presser foot arm.

[0011] Preferably, the first presser foot arm and the second presser foot arm are movably arranged on the presser foot mounting plate through the sliding groove, a presser foot space is formed between the first presser foot arm and the second presser foot arm, both ends of the first presser foot arm are provided with a first connecting piece, both ends of the second presser foot arm are provided with a second connecting piece, the first connecting piece is slidably connected with the second presser foot arm, and the second connecting piece is slidably connected with the first presser foot arm.

[0012] Preferably, the first presser foot arm and the second presser foot arm are movably arranged on the presser foot mounting plate through the sliding groove, a presser foot space is formed between the first presser foot arm and the second presser foot arm, both ends of the first presser foot arm are provided with a first connecting piece, both ends of the second presser foot arm are provided with a second connecting piece, the first connecting piece is slidably connected with the second presser foot arm, and the second connecting piece is slidably connected with the first presser foot arm.

[0013] Preferably, the first presser foot arm is provided with a first through hole, and the second connecting piece passes through the first through hole and is slidably connected with the first presser foot arm; and / or,

[0014] The second presser foot arm is provided with a second through hole, and the first connecting piece passes through the second through hole and is slidably connected with the second presser foot arm.

[0015] Preferably, the presser foot mounting plate is fixedly provided with a presser foot frame, and the presser foot frame is used for being connected with a feeding frame of a looping machine.

[0016] Preferably, the first connecting piece and the first presser foot arm are connected through a fastener.

[0017] Preferably, the fastener is a bolt or a screw.

[0018] The utility model also provides a kind of looping machine, including any one technical solution provided by the adjustable presser foot mechanism of above.

[0019] With respect to the above background, the adjustable presser foot mechanism provided by the utility model, the first presser foot arm is slidably connected with the second presser foot arm through the first connecting piece, the second presser foot arm is slidably connected with the first presser foot arm through the second connecting piece, the first connecting piece and the second connecting piece are slid along the second presser foot arm and the first presser foot arm respectively, the distance between the first presser foot arm and the second presser foot arm can be adjusted, the size of the presser foot space formed by the first presser foot arm and the second presser foot arm is changed, thereby the adjustable presser foot mechanism can be applied to sewing different sewing materials. Compared with the technical scheme in the prior art, the technical scheme needs to disassemble the presser foot assembly and then reassemble a new presser foot assembly, the operation is simpler, the use is more convenient, time can be saved, and work efficiency can be improved, and since disassembly and replacement are not needed, the components are not easy to lose.

[0020] The knot tying machine can produce the same technical effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] 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 embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only 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.

[0022] Fig. 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.

[0023] Fig. 2 The exploded schematic diagram of the adjustable presser foot mechanism provided by the embodiments of the utility model is shown in the figure.

[0024] Figs. 1-2 In the figure, the reference numerals are as follows: 10, presser foot mounting plate; 101, sliding groove; 102, mounting hole; 103, limiting groove; 11, first presser foot arm; 111, first through hole; 12, second presser foot arm; 121, second through hole; 13, first connecting piece; 14, second connecting piece; 15, gear slot; 16, presser foot frame; 17, fastener; 20, limiting piece; 21, limiting nut; 201, clamping tooth. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0026] In order to make the technical personnel in the technical field better understand the utility model scheme, the utility model is further explained in detail below in combination with the drawings and specific embodiments.

[0027] The utility model provides a kind of adjustable presser foot mechanism and knot machine, can satisfy the sewing demand of different cloth on market.

[0028] Please refer to Figs. 1-2 The adjustable presser foot mechanism provided by the utility model includes a first presser foot arm 11, a second presser foot arm 12 and two symmetrically arranged presser foot mounting plates 10.

[0029] The presser foot mounting plate 10 is provided with a sliding groove 101, and the sliding grooves 101 on the two presser foot mounting plates 10 are oppositely arranged. The first presser foot arm 11 and the second presser foot arm 12 are movably arranged on the presser foot mounting plate 10 through the sliding groove 101, and a presser foot space is formed between the first presser foot arm 11 and the second presser foot arm 12. The two ends of the first presser foot arm 11 are provided with a first connecting piece 13, and the two ends of the second presser foot arm 12 are provided with a second connecting piece 14. The first connecting piece 13 is slidably connected with the second presser foot arm 12, and the second connecting piece 14 is slidably connected with the first presser foot arm 11.

[0030] The first presser foot arm 11 is slidably connected with the second presser foot arm 12 through the first connecting piece 13, and the second presser foot arm 12 is slidably connected with the first presser foot arm 11 through the second connecting piece 14. During use, the distance between the first presser foot arm 11 and the second presser foot arm 12 can be adjusted by making the first connecting piece 13 and the second connecting piece 14 slide along the second presser foot arm 12 and the first presser foot arm 11 respectively, so as to change the size of the presser foot space formed by the first presser foot arm 11 and the second presser foot arm 12, thereby being applicable to sewing different sewing materials. Compared with the technical scheme in the prior art, which requires disassembling the presser foot assembly and then reassembling a new presser foot assembly, the operation is simpler, the use is more convenient, time can be saved, and work efficiency can be improved. Since disassembly and replacement are not required, the components are not easy to lose.

[0031] Please refer to Figs. 1-2 The side, which is close to each other, of the first connecting piece 13 and the second connecting piece 14 is provided with a continuously distributed tooth groove 15. The first presser foot arm 11 and the second presser foot arm 12 are arranged in parallel, the first connecting piece 13 and the second connecting piece 14 are arranged in parallel, the side, which is close to the second connecting piece 14, of the first connecting piece 13 is provided with the tooth groove 15, and the side, which is close to the first connecting piece 13, of the second connecting piece 14 is also provided with the tooth groove 15.

[0032] Please refer to Figs. 1-2 The adjustable presser foot mechanism provided by the utility model further includes a limiting piece 20 for limiting the movement of the first presser foot arm 11 and the second presser foot arm 12. The limiting piece 20 is uniformly provided with a clamping tooth 201 in the circumferential direction, and the clamping tooth 201 is used for clamping the tooth groove 15.

[0033] The limiting piece 20 is in a cylindrical structure, and the clamping teeth 201 are uniformly distributed along the circumference of the limiting piece 20. By clamping the clamping teeth 201 with the tooth grooves 15 on the first connecting piece 13 and the tooth grooves 15 on the second connecting piece 14, the first connecting piece 13 and the second connecting piece 14 can be limited, thereby avoiding relative movement between the first presser foot arm 11 and the second presser foot arm 12, ensuring that the size of the presser foot space formed by the first presser foot arm 11 and the second presser foot arm 12 does not change, and ensuring the normal progress of subsequent sewing operations.

[0034] Please refer to Figs. 1-2 , the top of the presser foot mounting plate 10 is provided with a mounting hole 102, the mounting hole 102 penetrates the top of the presser foot mounting plate 10 and communicates with the sliding groove 101, the limiting piece 20 passes through the mounting hole 102 and is clamped with the tooth grooves 15 on the first connecting piece 13 and the second connecting piece 14 at the same time.

[0035] When the first connecting piece 13 and the second connecting piece 14 are limited by the limiting piece 20, the limiting piece 20 passes through the mounting hole 102 on the top of the presser foot mounting plate 10 and is inserted between the first connecting piece 13 and the second connecting piece 14. The clamping teeth 201 on the circumference of the limiting piece 20 are clamped with the tooth grooves 15 on the first connecting piece 13 and the tooth grooves 15 on the second connecting piece 14 at the same time, limiting the movement of the first connecting piece 13 and the second connecting piece 14, so that the first connecting arm 11 and the second connecting arm 12 do not move relatively, avoiding the change of the presser foot space formed by the first presser foot arm 11 and the second presser foot arm 12.

[0036] Please refer to Figs. 1-2 , the top of the presser foot mounting plate 10 is provided with a limiting groove 103, the mounting hole 102 is located at the limiting groove 103, the top end of the limiting piece 20 is connected with a limiting nut 21, and the limiting nut 21 is accommodated in the limiting groove 103.

[0037] When the limiting piece 20 passes through the mounting hole 102 on the top of the presser foot mounting plate 10 and is clamped with the first connecting piece 13 and the second connecting piece 14 at the same time, the limiting nut 21 at the top end of the limiting piece 20 is correspondingly accommodated in the limiting groove 103, and the limiting piece 20 is positioned and fixed by the abutting of the limiting groove 103 and the limiting nut 21. The size and shape of the limiting groove 103 are adapted to the limiting nut 21. The limiting piece 20 is threadedly connected with the limiting nut 21, which is convenient for assembly and disassembly.

[0038] Please refer to Figs. 1-2 , the first presser foot arm 11 is provided with a first through hole 111, and the second connecting piece 14 passes through the first through hole 111 and is in sliding connection with the first presser foot arm 11; and / or,

[0039] The second presser foot arm 12 is provided with a second through hole 121, and the first connecting piece 13 is slidably connected with the second presser foot arm 12 through the second through hole 121.

[0040] Please refer to Figs. 1-2 The presser foot mounting plate 10 is fixedly provided with a presser foot holder 16, which is used to be connected with a feeding holder of a looping machine.

[0041] Please refer to Figs. 1-2 Figs. 1-2 The first connecting piece 13 is connected with the first presser foot arm 11 through a fastener 17, and the first connecting piece 13 and the first presser foot arm 11 are connected through the fastener 17, which is reliable in connection and facilitates assembly and disassembly of the first connecting piece 13 and the first presser foot arm 11.

[0042] Preferably, the fastener 17 is a bolt or a screw, which is convenient for installation and disassembly, has strong versatility, is low in cost and is suitable for various occasions. Specifically, threaded holes are correspondingly arranged on the first connecting arm 11 and the first connecting piece 13, and the bolt or the screw is installed in the threaded holes, so as to connect the first connecting arm and the first connecting piece.

[0043] In addition, the second presser foot arm 12 and the second connecting piece 14 can also be connected through a bolt or a screw.

[0044] The adjustable presser foot mechanism provided by the utility model, the first presser foot arm 11 is slidably connected with the second presser foot arm 12 through the first connecting piece 13, the second presser foot arm 12 is slidably connected with the first presser foot arm 11 through the second connecting piece 14, the first connecting piece 13 and the second connecting piece 14 are slid along the second presser foot arm 12 and the first presser foot arm 11 respectively, the distance between the first presser foot arm 11 and the second presser foot arm 12 can be adjusted, the size of the presser foot space formed by the first presser foot arm 11 and the second presser foot arm 12 can be changed, so that the adjustable presser foot mechanism can be applied to sewing different sewing materials.

[0045] In addition to the adjustable presser foot mechanism disclosed in each of the above embodiments, the utility model also provides a looping machine comprising the adjustable presser foot mechanism.

[0046] It should be noted that the relative terms, such as first and second, are used herein solely to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between such entities.

[0047] The principles and implementation modes of the present application are described herein by using specific examples, and the above example descriptions are only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. An adjustable pressure foot mechanism, characterized in that, include: Two symmetrically arranged presser foot mounting plates, each presser foot mounting plate having a sliding groove; The first presser foot arm and the second presser foot arm are movably disposed on the presser foot mounting plate through the sliding groove. A presser foot space is formed between the first presser foot arm and the second presser foot arm. The first presser foot arm is provided with a first connector at both ends, and the second presser foot arm is provided with a second connector at both ends. The first connector is slidably connected to the second presser foot arm, and the second connector is slidably connected to the first presser foot arm.

2. The adjustable pressure foot mechanism according to claim 1, characterized in that, The first connector and the second connector have continuously distributed toothed grooves on their adjacent sides.

3. The adjustable pressure foot mechanism according to claim 2, characterized in that, It also includes a limiting member for restricting the movement of the first presser foot arm and the second presser foot arm, the limiting member having teeth evenly distributed circumferentially, the teeth being used to engage with the tooth groove.

4. The adjustable pressure foot mechanism according to claim 3, characterized in that, The top of the presser foot mounting plate is provided with a mounting hole, the limiting member passes through the mounting hole, and simultaneously engages with the toothed grooves on the first connector and the second connector.

5. The adjustable pressure foot mechanism according to claim 4, characterized in that, The top of the presser foot mounting plate is provided with a limiting groove, the mounting hole is located at the limiting groove, the top of the limiting member is connected to a limiting nut, and the limiting nut is accommodated in the limiting groove.

6. The adjustable pressure foot mechanism according to claim 1, characterized in that, The first presser foot arm has a first through hole, and the second connector passes through the first through hole and is slidably connected to the first presser foot arm; and / or, The second presser foot arm is provided with a second through hole, and the first connector passes through the second through hole and is slidably connected to the second presser foot arm.

7. The adjustable pressure foot mechanism according to claim 1, characterized in that, The presser foot mounting plate is fixedly equipped with a presser foot bracket, which is used to connect to the supply frame of the knotting machine.

8. The adjustable pressure foot mechanism according to claim 1, characterized in that, The first connector is connected to the first presser foot arm by fasteners.

9. The adjustable pressure foot mechanism according to claim 8, characterized in that, The fastener is a bolt or screw.

10. A knotting machine, characterized in that, Includes the adjustable presser foot mechanism as described in any one of claims 1 to 9.

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