Decorative strip guide mechanism and sewing machine using the same

Abstract

The present invention relates to a decorative strip guide mechanism, comprising a mounting portion mounted on a sewing machine body and a guide block for guiding the decorative strip, the guide block being provided with a guide groove, and also comprising a first adjustment block and a second adjustment block, the guide block being provided with an adjustment portion, the adjustment portion being mounted on the first adjustment block through a first adjustment mechanism in a manner that it can be moved and adjusted laterally along the first adjustment block, the first adjustment block being mounted on the second adjustment block through a second adjustment mechanism in a manner that it can be moved and adjusted longitudinally, and the second adjustment block being mounted on the mounting portion. The present invention guides the movement of the decorative strip by setting a guide groove, so that when the decorative strip, the decorative block and the upper are sewn as one, they can be accurately aligned, ensuring neat stitches, and improving sewing efficiency and sewing quality. The present invention also proposes a sewing machine using the decorative strip guide mechanism, which can effectively improve the sewing efficiency and sewing quality of the decorative strip.

Description

Technical Field

[0001] The invention relates to a decorative strip guiding mechanism and a sewing machine adopting the guiding mechanism. Background Art

[0002] In the process of processing the upper, it is often necessary to sew decorative blocks of various shapes or colors on the upper, and decorative strips are often sewn on the edges of the decorative blocks to form decorative edges. The traditional processing method is to first sew the decorative strips on the upper by sewing, and then sew the decorative blocks to the decorative strips; or first paste or sew the decorative strips and the decorative blocks together, and then sew the decorative strips and the decorative blocks together to the upper. In the Chinese utility model with authorization announcement number CN 203866514 U and the name "Sewing machine presser foot mechanism and sewing machine", a sewing machine presser foot mechanism is disclosed, including a connecting rod and a sewing machine presser foot, the lower part of the connecting rod is connected to the sewing machine presser foot, and the upper end is connected to the sewing machine rod, wherein: the front end of the sewing machine presser foot is provided with a material guide cylinder, the bottom surface is provided with a linear guide groove connected to the material guide cylinder and extending backward, and the sewing machine presser foot is provided with a vertical needle hole penetrating the linear guide groove.

[0003] Although the sewing machine presser foot in the above patent can guide the decorative strip and realize the synchronous sewing of the decorative strip and the decorative block on the upper, the position of the presser foot of the presser foot mechanism of this structure is not easy to adjust, and it is difficult to adjust the position of the decorative strip, so it is difficult to guide the decorative strip to the upper at the best angle, especially when it is necessary to sew the decorative strip on the upper in a curved shape, the operation is difficult, and a linear guide groove for the sewing needle to pass through is provided on the presser foot. In order to avoid the sewing needle and the linear guide groove from hitting the needle, the processing and installation accuracy of the entire presser foot is relatively high. Moreover, the sewing machine presser foot mechanism of this structure has a guide cylinder formed on the presser foot, which makes it difficult to sew the three-layer upper material with the decorative strip in the middle.

[0004] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which led to the emergence of this case. Summary of the invention

[0005] An object of the present invention is to provide a decorative strip guiding mechanism which has a simple structure, is easy to adjust, and can assist in improving the efficiency of sewing decorative strips. Another object of the present invention is to provide a sewing machine using the decorative strip guiding mechanism.

[0006] In order to achieve the above object, the present invention adopts such technical solution:

[0007] The decorative strip guiding mechanism comprises a mounting portion mounted on a sewing machine body and a guiding block for guiding the decorative strip, wherein a guiding groove is provided on the guiding block, with the extension direction of the guiding groove being the longitudinal direction, and the direction perpendicular to the transverse direction and along the horizontal direction being the transverse direction, and further comprising a first adjusting block and a second adjusting block, wherein the guiding block is provided with an adjusting portion, the adjusting portion is mounted on the first adjusting block through a first adjusting mechanism in a manner that it can be moved and adjusted along the transverse direction of the first adjusting block, the first adjusting block is mounted on the second adjusting block through a second adjusting mechanism in a manner that it can be moved and adjusted along the longitudinal direction, and the second adjusting block is mounted on the mounting portion.

[0008] As a preferred embodiment of the present invention, a first strip groove along the transverse direction is provided on the first adjusting block, the first adjusting mechanism is a first adjusting screw inserted in the first strip groove, the adjusting portion extends in the transverse direction, and a first threaded groove cooperating with the first adjusting screw is provided on the adjusting portion, the first adjusting screw has a first nut portion for tightening the first adjusting block, and the first adjusting block is clamped between the adjusting portion and the first nut portion.

[0009] As a preferred embodiment of the present invention, the first adjusting block is provided with a first extension block extending toward the mounting portion, the first extension block is provided with a second strip groove, the second adjustment mechanism is a second adjusting screw inserted in the second strip groove, the second adjusting block is provided with a second threaded groove cooperating with the second adjusting screw, the second adjusting screw has a second nut portion for tightening the first extension block, and the first extension block is clamped between the second nut portion and the second adjusting block.

[0010] As a preferred embodiment of the present invention, the mounting portion is provided with a shaft rod arranged in a transverse direction, the second adjusting block is provided with a shaft sleeve portion, the shaft sleeve portion is rotatably sleeved on the shaft rod, a fixing sleeve is also installed on the shaft rod, a support frame is installed on the fixing sleeve, and also includes a third adjusting screw threaded on the second adjusting block, the third adjusting screw is vertically penetrated on the second adjusting block, the end of the third adjusting screw is abutted against the support frame, and tension springs are provided on the support frame and the second adjusting block.

[0011] As a preferred embodiment of the present invention, a second extension block extending laterally is provided on the second adjustment block, a third extension block extending laterally is provided on the support plate, the second extension block is provided with a first hanging hole, the third extension block is provided with a second hanging hole, and both ends of the tension spring are respectively hung in the first hanging hole and the second hanging hole.

[0012] As a preferred embodiment of the present invention, the support frame is located below the second adjusting block.

[0013] As a preferred embodiment of the present invention, with the direction perpendicular to the horizontal direction and the longitudinal direction as the vertical direction, the guide block has a guide portion, the guide portion and the adjustment portion are connected together through a connecting portion, the guide groove is arranged on the guide portion, and the connecting portion is arranged along the longitudinal direction.

[0014] As a preferred embodiment of the present invention, the guide portion includes a first flat plate portion and a second flat plate portion arranged vertically up and down, one end of the first flat plate portion and one end of the second flat plate portion are connected through an open-loop guide portion, and the inner diameter of the open-loop guide portion is greater than the distance between the first flat plate portion and the second flat plate portion.

[0015] As a preferred embodiment of the present invention, the other end of the first flat plate portion and the other end of the second flat plate portion are connected via a closing block.

[0016] A sewing machine comprises a sewing machine body, on which a workbench for placing objects to be sewn, a pressing block for pressing the objects to be sewn, and a mounting rod for mounting sewing needles are provided, and the sewing machine body also comprises a decorative strip guiding mechanism, wherein the decorative strip guiding mechanism adopts the above-mentioned decorative strip guiding mechanism.

[0017] After adopting the technical solution of the present invention, the lateral position of the guide block can be adjusted by setting the first adjustment mechanism, and the longitudinal position of the guide block can be adjusted by the second adjustment mechanism, so as to adjust the position of the guide groove, so that the decorative strip can be adjusted to the best introduction angle. The present invention guides the movement of the decorative strip by setting the guide groove, so that the decorative strip, the decorative block and the upper can be accurately aligned when they are sewn together, ensuring the neatness of the seams, improving the sewing efficiency and sewing quality, and the guide mechanism of the present invention has the advantage of simple structure. Furthermore, the present invention sets a third adjustment mechanism so that the vertical position of the entire guide groove can be adjusted to adapt to uppers of different thicknesses, and at the same time, the decorative strip can move on the upper at a better angle to improve the sewing quality. The present invention also proposes a sewing machine using the decorative strip guide mechanism, which can effectively improve the sewing efficiency and sewing quality of the decorative strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the decorative strip guide mechanism in the present invention;

[0019] Figure 2 It is a structural schematic diagram of the sewing machine of the present invention;

[0020] Figure 3 It is a schematic diagram of the matching structure of the decorative strip, the decorative block and the upper in the present invention;

[0021] In the figure:

[0022] Guide block 10 Adjustment part 11

[0023] Connecting portion 12 Guide portion 13

[0024] The first flat plate portion 131 and the second flat plate portion 132

[0025] Open loop guide portion 133 Guide groove 134

[0026] First adjustment block 20 First strip groove 21

[0027] First adjusting screw 22 Washer 23

[0028] First extension block 24 Second strip groove 25

[0029] Second adjusting screw 26 Second extension block 27

[0030] Sleeve 28 First hanging hole 29

[0031] Support plate 30 Third extension block 31

[0032] Second hanging hole 32 Third adjusting screw 40

[0033] Positioning block 41 Tension spring 50

[0034] Mounting portion 60 Shaft rod 61

[0035] Fixing sleeve 62 Mounting hole 63

[0036] Sewing machine body 70 Sewing machine head 71

[0037] Clamp 72 Mounting column 73

[0038] Needle 74 Workbench 75

[0039] Upper 80 Decorative strip 90

[0040] Edge portion 91 Strip portion 92

[0041] Decorative block 100 Second adjustment block 200 DETAILED DESCRIPTION

[0042] In order to further explain the technical solution of the present invention, it is described in detail below in conjunction with embodiments.

[0043] Reference Figures 1 to 3, a decorative strip guiding mechanism comprises a mounting portion 60 mounted on a sewing machine body 70 and a guiding block 10 for guiding a decorative strip 90, a guiding groove 134 being provided on the guiding block 10, and the extending direction of the guiding groove 134 being the longitudinal direction (i.e. the walking direction of the decorative strip 100 in the working process, i.e. the front-to-back direction to be described below), and the direction perpendicular to the transverse direction and along the horizontal direction being the transverse direction, the present invention further comprises a first adjusting block 20 and a second adjusting block 200, both of which are plate-shaped, an adjusting portion being provided on the guiding block 10, an adjusting portion 11 being plate-shaped, the adjusting portion being installed on the first adjusting block 20 by a first adjusting mechanism in a manner that can be moved and adjusted laterally along the first adjusting block 20, the first adjusting block 20 being installed on the second adjusting block 200 by a second adjusting mechanism in a manner that can be moved and adjusted longitudinally, and the second adjusting block 200 being installed on the mounting portion 60.

[0044] As a preferred embodiment of the present invention, the first adjustment block 20 is provided with a first strip groove 21 extending in the transverse direction, the first adjustment mechanism is a first adjustment screw 22 inserted in the first strip groove 21, the adjustment portion 11 extends in the transverse direction, the adjustment portion 11 is provided with a first thread groove (not shown in the figure) matching with the first adjustment screw 22, the first adjustment screw 22 is screwed in the first thread groove, the first adjustment screw 22 has a first nut portion for pressing the first adjustment block 20, the first adjustment block 20 is clamped between the adjustment portion 11 and the first nut portion, preferably, a gasket 23 is further provided between the first nut portion and the first adjustment block 20. The first adjustment screw 22 is loosened, the adjustment portion 11 can move along the first strip groove 21, after moving to a predetermined position, the first adjustment screw 22 is tightened, so that the gasket 23 and the adjustment portion 11 clamp the first adjustment block 20. In the embodiment, there are two first adjustment screws 22.

[0045] As a preferred embodiment of the present invention, the first adjustment block 20 is provided with a first extension block 24 extending toward the mounting portion 60, the first extension block 24 is arranged perpendicularly to the first adjustment block 20, and the first extension block 24 and the first adjustment block 20 are located in different planes. In the embodiment, the angle between the first extension block 24 and the first adjustment block 20 is approximately 145°. The first extension block is provided with a second strip groove 25, and the second strip groove 25 is arranged along the length direction of the first extension block. The second adjustment mechanism is a second adjustment screw 26 inserted into the second strip groove 25, and a second thread groove (not shown in the figure) cooperating with the second adjustment screw 26 is provided on the second adjustment block 200, and the second adjustment screw 26 has a second nut portion for pressing the first extension block 24, and the first extension block 24 is sandwiched between the second nut portion and the second adjustment block 200. There are two second adjusting screws 26. When the second adjusting screws 26 are loosened, the first extension block 24 can move relative to the second adjusting block 200. When the first extension block 24 moves to a predetermined position, the second adjusting screws 26 are tightened to clamp the first extension block 24 between the second adjusting screws 26 and the second adjusting block 200. With this structure, vertical adjustment (this direction will be defined below) can be achieved while longitudinal adjustment is achieved.

[0046] As a preferred embodiment of the present invention, the mounting portion 60 is provided with a shaft rod 61 arranged in a transverse direction, the second adjustment block 200 is provided with a shaft sleeve portion 28, the shaft sleeve portion 28 is rotatably sleeved on the shaft rod 61, a fixing sleeve 62 is also installed on the shaft rod 61, the fixing sleeve is locked on the shaft rod by screws, the shaft rod 61 is fixed on the mounting portion 60, a support frame 30 is installed on the fixing sleeve 62, and the support frame 30 can be fixed on the fixing sleeve 62 by welding, and the support frame 30 is located below the second adjustment block 200. The present invention also includes a third adjustment screw 40 screwed on the second adjustment block 200, the third adjustment screw 40 is vertically penetrated on the second adjustment block 200, the end of the third adjustment screw 40 abuts against the support frame 30, and a tension spring 50 is provided on the support frame 30 and the second adjustment block 200, and the tension spring 50 is used to assist the support frame 30 in positioning and has a reset function. When in use, by turning the third adjusting screw 40, the end of the third adjusting screw 40 abuts against the support frame 30, which is used to adjust the distance between the second adjusting block and the support plate 30, that is, the sleeve portion 28 is rotated a certain angle. In order to further realize the positioning of the third adjusting screw 40, a positioning block 41 can also be provided on the third adjusting screw 40. The positioning block 41 is equivalent to a nut to further limit the rotation of the third adjusting screw 40.

[0047] As a preferred embodiment of the present invention, a second extension block 27 extending transversely is provided on the second adjustment block 200, and a third extension block 31 extending transversely is provided on the support plate 30. The second extension block 27 is arranged in parallel with the third extension block 31. The second extension block 27 is arranged at one end of the second adjustment block 200 close to the first adjustment block 20, and the third extension block 31 is arranged at one end of the support plate 30 away from the first adjustment block 20. A first hanging hole 29 is provided on the second extension block 27, and a second hanging hole 32 is provided on the third extension block 31. Both ends of the tension spring 50 are hung in the first hanging hole 29 and the second hanging hole 32, respectively.

[0048] As a preferred embodiment of the present invention, with the direction perpendicular to the horizontal direction and the longitudinal direction as the vertical direction, the guide block 10 has a guide portion 13, the guide portion 13 is connected to the adjustment portion 11 through a connecting portion 12, the guide groove 134 is arranged on the guide portion 13, and the connecting portion is arranged along the longitudinal direction.

[0049] As a preferred embodiment of the present invention, the guide portion 13 includes a first flat plate portion 131 and a second flat plate portion 132 arranged vertically up and down, one end of the first flat plate portion 131 and one end of the second flat plate portion 132 are connected through an open-loop guide portion 133, and the first flat plate portion 131, the second flat plate portion 132 and the open-loop guide portion 133 together form a guide groove 134, and the inner diameter of the open-loop guide portion 133 is greater than the distance between the first flat plate portion 131 and the second flat plate portion 132. Figure 3 The guide portion 13 of the structure is particularly suitable for Figure 3 The decorative strip 90 structure in the embodiment of the present invention comprises a strip portion 92 and a rim portion 91 formed on the periphery of the strip portion 92. The rim portion 91 is generally columnar. When working, the rim portion 91 is accommodated in the open-loop guide portion 133. The guide groove 134 can limit the decorative strip 90 from sliding out in the lateral direction. When sewing, the decorative strip 90 is stacked on the upper 80, and the decorative block 100 is stacked on the strip portion 92. The guide portion 13 with this structure can appropriately adjust the spacing between the first flat plate portion 131 and the second flat plate portion 132 according to the structure of the decorative strip 90, so that the decorative strip 90 can slide in the guide groove 134 in the longitudinal direction more stably.

[0050] The present invention may also adopt another embodiment, where the other end of the first flat plate portion 131 and the other end of the second flat plate portion 132 are connected via a closing block, that is, the guide groove 134 is a closed-loop annular groove in the transverse direction.

[0051] The present invention also provides a sewing machine, including a sewing machine body 70, on which a workbench 75 for placing a material to be sewn, a pressing block 72 for pressing the material to be sewn, and a mounting rod 73 for mounting a sewing needle 74 are provided. The pressing block 72 and the mounting rod 73 are both mounted on a sewing machine head 71 of the sewing machine body 70, and the sewing machine mechanism is correspondingly arranged above the workbench 75, and further comprising a decorative strip guide mechanism, wherein the decorative strip 90 guide mechanism adopts the above-mentioned decorative strip 90 guide mechanism, and the side of the sewing machine body 70 facing the user is the front, and the other side opposite is the rear, and the mounting portion 60 can be mounted on the rear side of the sewing machine head 71, specifically, a mounting hole 61 is provided on the mounting portion 60, and the mounting portion 60 is locked on the sewing machine head 71 by a screw. The guide portion 13 is located in front of the sewing needle 74, the pressing block 72 is located behind the guide portion 13, and the adjustment portion 11 is located on the left side of the pressing block 72.

[0052] The product form of the present invention is not limited to the embodiments of this case. Any appropriate changes or modifications made by anyone with similar ideas should be deemed to be within the patent scope of the present invention.

Claims

1. A decorative strip guide mechanism, comprising a mounting portion mounted on a sewing machine body and a guide block for guiding the decorative strip, wherein a guide groove is provided on the guide block, wherein the extending direction of the guide groove is the longitudinal direction, and the direction perpendicular to the longitudinal direction and arranged in the horizontal direction is the transverse direction, wherein: The guide block further comprises a first adjusting block and a second adjusting block, wherein the guide block is provided with an adjusting portion, the adjusting portion is mounted on the first adjusting block via a first adjusting mechanism in a manner that it can be moved and adjusted laterally along the first adjusting block, the first adjusting block is mounted on the second adjusting block via a second adjusting mechanism in a manner that it can be moved and adjusted longitudinally, and the second adjusting block is mounted on the mounting portion; The mounting portion is provided with a shaft rod arranged in a transverse direction, the second adjusting block is provided with a shaft sleeve portion, the shaft sleeve portion is rotatably sleeved on the shaft rod, a fixing sleeve is also installed on the shaft rod, a supporting frame is installed on the fixing sleeve, and also includes a third adjusting screw threaded on the second adjusting block, the third adjusting screw is vertically penetrated on the second adjusting block, the end of the third adjusting screw is against the supporting frame, and tension springs are provided on the supporting frame and the second adjusting block.

2. The decorative strip guide mechanism according to claim 1, characterized in that: The first adjusting block is provided with a first strip groove along the transverse direction, the first adjusting mechanism is a first adjusting screw inserted in the first strip groove, the adjusting portion extends in the transverse direction, and the adjusting portion is provided with a first threaded groove cooperating with the first adjusting screw, the first adjusting screw has a first nut portion for tightening the first adjusting block, and the first adjusting block is clamped between the adjusting portion and the first nut portion.

3. The decorative strip guide mechanism according to claim 2, characterized in that: The first adjusting block is provided with a first extension block extending toward the mounting portion, the first extension block is provided with a second strip groove, the second adjusting mechanism is a second adjusting screw inserted in the second strip groove, the second adjusting block is provided with a second threaded groove cooperating with the second adjusting screw, the second adjusting screw has a second nut portion for tightening the first extension block, and the first extension block is clamped between the second nut portion and the second adjusting block.

4. The decorative strip guide mechanism according to claim 1, characterized in that: The second adjusting block is provided with a second extending block extending laterally, the supporting frame is provided with a third extending block extending laterally, the second extending block is provided with a first hanging hole, the third extending block is provided with a second hanging hole, and both ends of the tension spring are respectively hung in the first hanging hole and the second hanging hole.

5. The decorative strip guide mechanism according to claim 4, characterized in that: The supporting frame is located below the second adjusting block.

6. The decorative strip guide mechanism according to claim 2, characterized in that: Taking the direction perpendicular to the transverse direction and the longitudinal direction as the vertical direction, the guide block has a guide portion, the guide portion and the adjustment portion are connected together through a connecting portion, the guide groove is arranged on the guide portion, and the connecting portion is arranged along the longitudinal direction.

7. The decorative strip guide mechanism according to claim 6, characterized in that: The guide portion includes a first flat plate portion and a second flat plate portion arranged vertically up and down, one end of the first flat plate portion and one end of the second flat plate portion are connected through an open-loop guide portion, and the inner diameter of the open-loop guide portion is greater than the distance between the first flat plate portion and the second flat plate portion.

8. The decorative strip guide mechanism according to claim 7, characterized in that: The other end of the first flat plate portion and the other end of the second flat plate portion are connected via a closing block.

9. A sewing machine, comprising a sewing machine body, on which a workbench for placing objects to be sewn, a pressing block for pressing the objects to be sewn, and a mounting rod for mounting sewing needles are provided, and a decorative strip guide mechanism is also provided, characterized in that: The decorative strip guiding mechanism adopts the decorative strip guiding mechanism according to any one of claims 1 to 8.

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