Adjustable presser foot mechanism and bar tacking machine

Abstract

The utility model discloses an adjustable presser foot mechanism and a bar tacking machine, which relates to the technical field of sewing devices and comprises a first presser foot arm, a second presser foot arm, an adjusting component 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 the sliding grooves, and a presser foot space is formed between the first presser foot arm and the second presser foot arm; the adjusting assembly is arranged on the presser foot mounting plate and comprises an adjusting dial plate and a driving part, the adjusting dial plate is fixedly arranged on the driving part, and the driving part is in sliding connection with the first presser foot arm and the second presser foot arm; when the adjusting dial rotates, the first presser foot arm and the second presser foot arm are driven by the driving part to get close to each other or get away from each other, so that the size of the presser foot space is changed. The adjustable presser foot mechanism is easy to operate and convenient to use, time can be saved, working efficiency is improved, disassembly and replacement are not needed, and therefore parts are not prone to being lost.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical field, especially 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 large elastic sewing material, the friction force received by needle is smaller, but cloth is large elastic, when needle drops, cloth will produce large deformation, 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;The other 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, thereby appearing failure.

[0004] The prior art discloses a kind of quickly switched 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: when debugging, new presser foot assembly needs to be reinstalled after presser foot assembly is disassembled, and the 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 to be solved by the person skilled in the art. UTILITY MODEL CONTENT

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

[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] First presser foot arm and second presser foot arm, the first presser foot arm and the second presser foot arm are movably arranged in the presser foot mounting plate through the sliding slot, and the presser foot space is formed between the first presser foot arm and the second presser foot arm.

[0009] An adjusting assembly is arranged on the presser mounting plate, and the adjusting assembly comprises an adjusting dial and a driving member, the adjusting dial is fixedly arranged on the driving member, and the driving member is in sliding connection with the first presser arm and the second presser arm;

[0010] When the adjusting dial rotates, the first presser arm and the second presser arm are driven by the driving member to move close to or away from each other, so as to change the size of the presser space.

[0011] Preferably, the driving member comprises:

[0012] a fixed plate;

[0013] two sliding rods, which are fixedly arranged on the fixed plate, and are in sliding connection with the first presser arm and the second presser arm, respectively;

[0014] a fixed rod, which is fixedly arranged on the fixed plate, and is located on two sides of the fixed plate, respectively.

[0015] Preferably, the adjusting dial comprises a fixed part and a connecting part, the connecting part is fixedly arranged on the top of the fixed part, the fixed part is connected with the fixed plate, and the fixed rod penetrates through the adjusting dial.

[0016] Preferably, the bottom of the fixed part is provided with a clamping groove, and the fixed part is clamped with the fixed plate through the clamping groove.

[0017] Preferably, the two ends of the first presser arm are provided with first sliding grooves, the two ends of the second presser arm are provided with second sliding grooves, and the two sliding rods are in sliding connection with the first sliding grooves and the second sliding grooves, respectively.

[0018] Preferably, the adjusting dial further comprises a limiting member for limiting the rotation of the adjusting dial, the limiting member comprises a connecting plate and a fixed pin, the connecting plate is sleeved on the fixed rod, the fixed pin is fixedly arranged on the connecting plate, and the fixed pin is inserted into the presser mounting plate through the adjusting dial.

[0019] Preferably, the connecting part of the adjusting dial is provided with a plurality of through holes which are in communication with each other in the circumferential direction, and the fixed pin of the limiting member penetrates through the through holes.

[0020] Preferably, the top of the presser mounting plate is provided with a mounting groove, and the connecting part of the adjusting dial is accommodated in the mounting groove.

[0021] Preferably, the presser mounting plate is fixedly provided with a presser stand, and the presser stand is used for being connected with a supply stand of a knot tying machine.

[0022] The utility model also provides a set knot machine, including the adjustable presser foot mechanism of any prior art scheme.

[0023] Relative to above background art, the adjustable presser foot mechanism provided by the utility model, the first presser foot arm and the second presser foot arm are driven to slide along the sliding groove on the presser foot mounting plate simultaneously by the rotation of the adjusting dial through the driving part, the moving direction of the first presser foot arm and the second presser foot arm is opposite, the first presser foot arm and the second presser foot arm are close to each other or away from each other, the size of the presser foot space formed by the first presser foot arm and the second presser foot arm can be changed, thereby being applicable to sewing different sewing materials.

[0024] The set knot machine can produce the same technical effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] 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 the ordinary skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0026] Figure 1 The structural diagram of the adjustable presser foot mechanism provided by the utility model embodiment is shown in the figure.

[0027] Figure 2 The exploded view of the adjustable presser foot mechanism provided by the utility model embodiment is shown in the figure.

[0028] Figure 3 The structural diagram of the adjusting dial in the adjustable presser foot mechanism provided by the utility model embodiment is shown in the figure.

[0029] Figure 4 The structural diagram of the driving part in the adjustable presser foot mechanism provided by the utility model embodiment is shown in the figure.

[0030] Figures 1 to 410, presser foot mounting plate; 101, sliding groove; 102, mounting groove; 103, plug hole; 11, first presser foot arm; 111, first sliding groove; 12, second presser foot arm; 121, second sliding groove; 13, presser foot holder; 20, adjusting dial; 201, fixed part; 2011, clamping groove; 202, connecting part; 2021, through hole; 21, driving piece; 211, fixed plate; 212, fixed rod; 213, sliding rod; 30, limiting piece; 301, connecting plate; 302, fixed pin. DETAILED DESCRIPTION

[0031] 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 the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0032] 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.

[0033] The adjustable presser foot mechanism and the knot tying machine can meet the sewing requirements of different fabrics on the market.

[0034] Reference should also be made to Figures 1 to 4 The adjustable presser foot mechanism comprises a first presser foot arm 11, a second presser foot arm 12, an adjusting assembly and two symmetrically arranged presser foot mounting plates 10.

[0035] 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 grooves 101, and a presser foot space is formed between the first presser foot arm 11 and the second presser foot arm 12; the adjusting assembly is arranged on the presser foot mounting plate 10, and the adjusting assembly comprises an adjusting dial 20 and a driving piece 21; the adjusting dial 20 is fixedly arranged on the driving piece 21, and the driving piece 21 is in sliding connection with the first presser foot arm 11 and the second presser foot arm 12.

[0036] When the adjusting dial 20 rotates, the first presser foot arm 11 and the second presser foot arm 12 are driven by the driving piece 21 to move closer to or away from each other, so as to change the size of the presser foot space.

[0037] In use, when the adjusting dial 20 is rotated, the adjusting dial 20 drives the first presser arm 11 and the second presser arm 12 to slide along the sliding groove 101 on the presser mounting plate 10 simultaneously through the driving member 21, the moving directions of the first presser arm 11 and the second presser arm 12 are opposite, so that the first presser arm 11 and the second presser arm 12 are close to or away from each other, the size of the presser space formed by the first presser arm 11 and the second presser arm 12 is changed, so that different sewing materials can be adapted. When the size of the presser space is changed, only the adjusting dial 20 needs to be rotated, compared with the prior art which needs to disassemble the presser assembly and then reassemble a new presser assembly, the operation is simpler, the use is more convenient, the time can be saved, and the work efficiency is improved, and since disassembly and replacement are not needed, the components are not easy to lose.

[0038] Please refer to Figures 1 to 4 The adjustable presser mechanism provided by the utility model has the advantages that the driving member 21 comprises a fixed plate 211, a fixed rod 212 and two sliding rods 213. The two sliding rods 213 are fixedly arranged on the fixed plate 211, and the two sliding rods 213 are slidably connected with the first presser arm 11 and the second presser arm 12 respectively; the fixed rod 212 is fixedly arranged on the fixed plate 211, and the fixed rod 212 and the two sliding rods 213 are located on the two sides of the fixed plate 211 respectively.

[0039] The two sliding rods 213 are arranged at intervals, the fixed rod 212 and the two sliding rods 213 are located on the two sides of the fixed plate 211 respectively, the driving member 21 is rotated when the adjusting dial 20 is rotated, the two sliding rods 213 of the driving member 21 drive the first presser arm 11 and the second presser arm 12 to move respectively, and the size of the presser space formed by the first presser arm 11 and the second presser arm 12 is changed.

[0040] Please refer to Figures 1 to 4 The adjustable presser mechanism provided by the utility model has the advantages that the adjusting dial 20 comprises a fixed portion 201 and a connecting portion 202, the connecting portion 202 is fixedly arranged on the top of the fixed portion 201, the fixed portion 201 is connected with the fixed plate 211, and the fixed rod 212 penetrates through the adjusting dial 20, specifically, the fixed rod 212 penetrates through the fixed portion 201 and the connecting portion 202 in sequence.

[0041] Please refer to Figures 1 to 4 A clamping groove 2011 is arranged at the bottom of the fixed portion 201, and the fixed portion 201 is clamped with the fixed plate 211 through the clamping groove 2011.

[0042] The fixed portion 201 and the fixed plate 211 are connected in a clamping mode, the structure is simple, and in this way, the adjusting dial 20 and the driving member 21 are reliably connected, and the adjusting dial 20 and the driving member 21 are convenient to assemble and disassemble, and are convenient to install and maintain and replace.

[0043] Please refer toFigures 1 to 4 The two ends of the first presser foot arm 11 are provided with a first sliding groove 111, and the two ends of the second presser foot arm 12 are provided with a second sliding groove 121.

[0044] The first sliding groove 111 of the first presser foot arm 11 is distributed in a staggered manner with the second sliding groove 121 of the second presser foot arm 12, and the two sliding rods 213 are arranged in the first sliding groove 111 and the second sliding groove 121, respectively.

[0045] Please refer to Figures 1 to 4 The adjustable presser foot mechanism further comprises a limiting piece 30 for limiting the rotation of the adjusting dial 20, and the limiting piece 30 comprises a connecting plate 301 and a fixed pin 302.

[0046] After the size of the presser foot space is adjusted, the adjusting dial 20 is limited and fixed by the limiting piece 30, so that the rotation of the adjusting dial 20 is limited, and the subsequent sewing effect is not affected by the change of the presser foot space.

[0047] Please refer to Figures 1 to 4 The connecting portion 202 of the adjusting dial 20 is provided with a plurality of through holes 2021 in communication with each other in the circumferential direction, and the fixed pin 302 of the limiting piece 30 passes through the through holes 2021, that is, the fixed pin 302 of the limiting piece 30 passes through the adjusting dial 20 through the above-mentioned through holes 2021 and is connected to the presser foot mounting plate 10.

[0048] The plurality of through holes 2021 are distributed in the circumferential direction, and through such a setting, when the adjusting dial 20 is rotated, the operator can easily judge the rotation angle of the adjusting dial 20 through the change of the position of the through hole 2021.

[0049] Please refer to Figures 1 to 4 The top of the presser foot mounting plate 10 is provided with a mounting groove 102, and the connecting part 202 of the adjusting dial 20 is accommodated in the mounting groove 102.

[0050] In addition, the mounting groove 102 is provided with a plug hole 103, and when the size of the presser foot space is adjusted and the adjusting dial 20 is fixed by the limiting piece 30, the fixing pin 302 of the limiting piece 30 passes through the through hole 2021 of the adjusting dial 20 and is plugged into the plug hole 103 of the presser foot mounting plate 10, so as to limit the rotation rod of the adjusting dial 20.

[0051] Please refer to Figures 1 to 4 The presser foot mounting plate 10 is fixedly provided with a presser foot frame 13, which is used to be connected with a supply frame of a looping machine. When the adjustable presser foot mechanism is used, the presser foot frame 13 is connected with the supply frame of the looping machine.

[0052] The adjustable presser foot mechanism provided by the utility model, when the adjusting dial 20 rotates, the first presser foot arm 11 and the second presser foot arm 12 are simultaneously slid along the sliding groove 101 on the presser foot mounting plate 10 by the driving piece 21, the moving directions of the first presser foot arm 11 and the second presser foot arm 12 are opposite, so that the first presser foot arm 11 and the second presser foot arm 12 are close to each other or away from each other, the size of the presser foot space formed by the first presser foot arm 11 and the second presser foot arm 12 is changed, so that the adjustable presser foot mechanism can be suitable for sewing different sewing materials. When the size of the presser foot space is changed, only the adjusting dial 20 needs to be rotated, compared with the technical scheme in the prior art, the presser foot assembly needs to be disassembled and a new presser foot assembly is reinstalled, the operation is simpler, the use is more convenient, time can be saved, and the working efficiency is improved, since disassembly and replacement are not needed, therefore the components are not easy to lose. Moreover, the structure of the adjustable presser foot mechanism can be applied to any looping machine, and the market acceptance is higher.

[0053] In addition to the adjustable presser foot mechanism disclosed in the above-mentioned 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.

[0054] It should be noted that in the present specification, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities.

[0055] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples 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, some improvements and modifications can be made to the present application without departing from the principle of the present application, 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, and a presser foot space is formed between the first presser foot arm and the second presser foot arm; An adjustment assembly is provided on the presser foot mounting plate. The adjustment assembly includes an adjustment dial and a driving component. The adjustment dial is fixedly provided on the driving component, and the driving component is slidably connected to the first presser foot arm and the second presser foot arm. When the adjustment dial rotates, the driving component causes the first presser foot arm and the second presser foot arm to move closer or further apart, thereby changing the size of the presser foot space.

2. The adjustable pressure foot mechanism according to claim 1, characterized in that, The driving component includes: Fixing plate; Two sliding rods are fixedly mounted on the fixed plate, and the two sliding rods are slidably connected to the first presser foot arm and the second presser foot arm, respectively. A fixed rod is fixedly mounted on the fixed plate, and the fixed rod and the two sliding rods are respectively located on both sides of the fixed plate.

3. The adjustable pressure foot mechanism according to claim 2, characterized in that, The adjustment dial includes a fixing part and a connecting part. The connecting part is fixedly disposed on the top of the fixing part. The fixing part is connected to the fixing plate. The fixing rod passes through the adjustment dial.

4. The adjustable pressure foot mechanism according to claim 3, characterized in that, The bottom of the fixing part is provided with a slot, and the fixing part is engaged with the fixing plate through the slot.

5. The adjustable pressure foot mechanism according to claim 4, characterized in that, The first presser arm has a first groove at both ends, and the second presser arm has a second groove at both ends. The two sliding rods are slidably connected to the first groove and the second groove, respectively.

6. The adjustable pressure foot mechanism according to claim 3, characterized in that, It also includes a limiting member for restricting the rotation of the adjustment dial. The limiting member includes a connecting plate and a fixing pin. The connecting plate is sleeved on the fixing rod, and the fixing pin is fixed to the connecting plate. The fixing pin passes through the adjustment dial and is inserted into the pressure foot mounting plate.

7. The adjustable pressure foot mechanism according to claim 6, characterized in that, The connecting part of the adjustment dial is provided with multiple interconnected through holes along the circumference, and the fixing pin of the limiting member passes through the through holes.

8. 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 groove, and the connecting part of the adjustment dial is accommodated in the mounting groove.

9. 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.

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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