Braid adjusting frame for sewing machine

Abstract

The utility model belongs to the field of textile equipment, and particularly relates to a braid adjusting frame for a sewing machine, which comprises a disc, a stand column, a first clamping jaw, a support rod, a second clamping jaw and a mounting frame, the stand column comprises a first part and a second part, the first part is of a cylindrical structure, the first part is matched with the first clamping jaw, and the first part penetrates through the disc and protrudes out of the disc; the second part is inserted into the mounting frame, a step face is formed between the first part and the second part, the step face abuts against the mounting frame and limits the vertical column to move in the axial direction of the mounting frame, and the second part further comprises a third part which is inserted into the mounting frame and limits rotation of the vertical column. Rapid installation of the braid adjusting frame is achieved through plug-in type assembly of the first part and the second part of the stand column and the installation frame, height fixation of the installation frame is achieved through the limiting effect of the step face of the stand column and the installation frame, and relative rest of the stand column and the installation frame is achieved through the limiting effect of the third part of the stand column and the installation frame. And noise generated by rotation between parts is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of textile equipment, and in particular relates to a webbing adjustment frame for a sewing machine. Background Art

[0002] In the field of textile equipment, especially for webbing adjustment frames for sewing machines, the traditional installation method is to use screws to fasten the column to the mounting frame. Specifically, a round tube is welded to the outside of the mounting frame, and then the cylindrical surface of the round tube is tapped for mounting screws. The column is then inserted into the round tube, and finally the column is fastened to the round tube by locking screws, thereby achieving the installation and fixation of the column of the adjustment frame. Since the wall thickness of the round tube is usually thin, the number of threads after tapping is small, resulting in weak thread connection strength. In particular, after multiple locking operations, the screw threads fail due to wear, resulting in failure of the adjustment frame installation. Furthermore, since the round tube and the mounting frame are connected by welding, the thin wall thickness of the round tube causes the weld to penetrate the round tube, and the product is scrapped. Summary of the invention

[0003] The purpose of the utility model is to provide a webbing adjustment frame for a sewing machine, which can realize the rapid installation of the webbing adjustment frame through the plug-in assembly of the column and the mounting frame, thereby avoiding the problem of thread failure caused by threaded connection.

[0004] To this end, the utility model provides a webbing adjustment frame for a sewing machine, which includes a disk for storing webbing, a column coaxially penetrating the disk and rotatably connected to the disk, a first clamping jaw detachably connected to the column, a support rod detachably connected to the first clamping jaw, a second clamping jaw detachably connected to the support rod, and a mounting frame for mounting the column, the column and the support rod are vertically arranged, the second clamping jaw is used to release the webbing and adjust the output angle of the webbing, the first clamping jaw, the second clamping jaw and the support rod are located between the disk and the mounting frame, the mounting frame is used to be tightly connected to the table top of the sewing machine, the column includes a first part and a second part, the first part is set as a cylindrical structure, the first part cooperates with the first clamping jaw, the first part penetrates the disk and protrudes from the disk, the second part is inserted into the mounting frame, a step surface is formed between the first part and the second part, the step surface abuts the mounting frame and limits the axial movement of the column along the mounting frame, and the second part also includes a third part, the third part is inserted into the mounting frame and limits the rotation of the column. Beneficial Effects

[0005] 1. By arranging the first part and the second part on the column, a step surface is formed between the first part and the second part, and the step surface abuts against the mounting frame to limit the axial movement of the column along the mounting frame, so that the column is kept at the set position of the mounting frame. This arrangement eliminates the need for screw installation and avoids the problem of screw failure caused by multiple loosening and tightening.

[0006] 2. By arranging the third part in the second part, the third part is inserted into the mounting frame to limit the rotation of the column relative to the mounting frame, so that the column and the mounting frame remain relatively still, thereby reducing the noise generated by the rotation between the parts.

[0007] 3. By arranging the first through hole and the second through hole on the mounting frame, and by cooperating with the first through hole and the second through hole and the column, the column is directly inserted into the mounting frame, thereby avoiding the use of round tube welding technology, thereby avoiding the problem of product scrapping due to welding point penetration.

[0008] 4. By arranging a thrust bearing and a sleeve between the disc and the column, the sleeve is partially inserted into the disc and sleeved on the column, so as to realize the rotation connection and axial sliding connection between the sleeve and the column. The disc can be adapted to different working heights through the axial sliding position.

[0009] 5. Through the cooperation between the shaft sleeve and the thrust bearing, the disc does not directly participate in the rotation friction. Through the cooperation between the shaft sleeve and the thrust bearing, the disc can rotate smoothly, avoiding the problem of shortening the working life of the disc due to rotation wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention and its advantages will be better understood from the following description of the embodiments given as non-limiting examples with reference to the accompanying drawings, which are as follows:

[0011] Figure 1 is a three-dimensional diagram of a webbing adjustment frame for a sewing machine disclosed according to an exemplary embodiment of the present application;

[0012] Figure 2 yes Figure 1 A three-dimensional diagram of the use of the disclosed webbing adjustment frame;

[0013] Figure 3 yes Figure 1 A stereogram from another perspective;

[0014] Figure 4 is a partial stereoscopic view of a webbing adjustment frame for a sewing machine disclosed according to an exemplary embodiment of the present application;

[0015] Figure 5 yes Figure 1 A perspective exploded view of the disclosed webbing adjustment frame;

[0016] Figure 6 yes Figure 1 A perspective view of the mounting frame in FIG.

[0017] Figure 7 yes Figure 1 A three-dimensional view of the columns in the figure;

[0018] Figure 8is a partial stereoscopic view of a webbing adjustment frame for a sewing machine disclosed according to an exemplary embodiment of the present application;

[0019] Fig. 9 yes Figure 1 A stereogram of the disk in;

[0020] Fig.10 yes Figure 2 A three-dimensional view of the sleeve in FIG.

[0021] Fig.11 yes Figure 3 A stereogram of the disk in;

[0022] Fig.12 yes Figure 1 A perspective view of the second clamping jaw;

[0023] Fig.13 yes Figure 2 A three-dimensional view of the first clamping jaw;

[0024] Fig.14 is a partial stereoscopic view of a webbing adjustment frame for a sewing machine disclosed according to an exemplary embodiment of the present application;

[0025] Fig.15 It is a partial stereoscopic view of a webbing adjustment frame for a sewing machine disclosed according to an exemplary embodiment of the present application.

[0026] Description of Reference Numerals

[0027] 1. Disc; 2. Support rod; 3. Second clamping jaw;

[0028] 4. Column; 5. Mounting frame; 6. Bushing;

[0029] 7. Pin; 8. Thrust bearing; 9. First clamping jaw;

[0030] 11. Boss; 12. Fifth through hole; 13. Blind hole;

[0031] 31. first body; 32. sixth through hole; 33. fourth arm;

[0032] 34. fifth arm; 35. upright pole group; 36. seventh through hole;

[0033] 37. Second threaded hole; 41. First part; 42. Second part;

[0034] 43. Step surface; 44. First through hole; 51. First arm;

[0035] 52. Second arm; 53. Third arm; 54. Second through hole;

[0036] 55. third through hole; 56. fourth through hole; 57. first threaded hole;

[0037] 61. First end portion; 62. Second end portion; 81. First end surface;

[0038] 82. Second end surface; 83. Rolling element; 91. Second body;

[0039] 92. Eighth through hole; 93. Sixth arm; 94. Seventh arm;

[0040] 95. The eighth arm; 96. The ninth arm; 97. The eleventh through hole;

[0041] 941. The third threaded hole; 931. The ninth through hole; 951. The fourth threaded hole;

[0042] 961. The tenth through hole. DETAILED DESCRIPTION

[0043] Implementation Method 1

[0044] Reference Figure 1 , Figure 3 as well as Figure 5 This embodiment shows a stereoscopic view of a webbing adjustment frame for a sewing machine, which includes a disc 1, a column 4, a first clamping jaw 9, a second clamping jaw 3, a support rod 2 and a mounting frame 5, wherein the column 4 coaxially penetrates the disc 1 and is rotatably connected to the disc 1. The disc 1 is used to store the webbing, and the second clamping jaw 3 is used to release the webbing and adjust the output angle of the webbing. Specifically, the webbing is packaged into a disc-shaped structure, and the webbing of the disc-shaped structure is coaxially placed on the disc 1. The column 4 penetrates the webbing rolled into a disc-shaped structure, and the free end of the webbing passes through a plurality of second clamping jaws 3. The angle of the webbing flowing through is adjusted by the plurality of second clamping jaws 3 so that the output angle of the webbing is kept at an appropriate angle, such as Figure 2As shown. The first clamping jaw 9 is located below the disc 1. The first clamping jaw 9 is sleeved on the column 4 and the first bolt is used to realize the disassembly connection between the first clamping jaw 9 and the column 4. The first clamping jaw 9 is adjusted to different positions on the column 4 by adjusting the tightness of the first bolt. The first clamping jaw 9 is moved to the appropriate position of the column 4 by loosening the first bolt and then tightening the first bolt to fasten the first clamping jaw 9 to the current position of the column 4. The disc 1 can adapt to different working heights by axially sliding the first clamping jaw 9. The support rod 2 realizes the disassembly connection between the first clamping jaw 9 and the support rod 2 by the second bolt. The first clamping jaw 9 is adjusted to different positions on the support rod 2 by adjusting the tightness of the second bolt. The first clamping jaw 9 is moved to the appropriate position of the support rod 2 by loosening the second bolt and then tightening the second bolt to fasten the first clamping jaw 9 to the current position of the support rod 2. The second clamping jaw 3 realizes the disassembly connection between the second clamping jaw 3 and the support rod 2 by the third bolt. The second clamping jaw 3 is adjusted to different positions on the support rod 2 by adjusting the tightness of the third bolt. The second clamping jaw 3 is moved to the appropriate position of the support rod 2 by loosening the third bolt and then tightening the third bolt to fasten the second clamping jaw 3 to the current position of the support rod 2. The column 4 is plugged into the mounting frame 5, and the mounting frame 5 is fastened to the table of the sewing machine by the locking screw. The column 4 and the support rod 2 are staggered and vertically arranged, and the first clamping jaw 9, the second clamping jaw 3 and the support rod 2 are located between the disc 1 and the mounting frame 5. The column 4 is installed on the mounting frame 5 by plug-in, avoiding the use of round tube welding process, thereby avoiding the problem of product scrapping due to welding point penetration.

[0045] Reference Figure 7 , the column 4 is constructed as a thin-walled tubular structure, which has a first part 41 and a second part 42. The first part 41 is constructed as a cylindrical structure, and the second part 42 is constructed as a square tubular structure with a square cross-section. Part of the outer dimensions of the second part 42 are smaller than the outer dimensions of the first part 41, and a step surface 43 is formed between the first part 41 and the second part 42, and the step surface 43 faces the second part 42. The first part 41 cooperates with the first clamp 9, the first part 41 penetrates the disc 1 and protrudes from the disc 1, and the second part 42 is inserted into the mounting frame 5. The step surface 43 abuts against the mounting frame 5 and limits the axial movement of the column 4 along the mounting frame 5, so that the column 4 remains in the set position of the mounting frame 5. This arrangement eliminates the need for screw installation and avoids the problem of screw thread failure caused by multiple loosening and tightening of the screw. In order to avoid the relative rotation of the second part 42 after it is inserted into the mounting frame 5 and generate noise, the second part 42 is also provided with a third part, and the third part is inserted into the mounting frame 5 and limits the rotation of the column 4 relative to the mounting frame 5. As an exemplary embodiment, the mounting frame 5 is constructed as a U-shaped structure, such as Figure 6As shown, it has a first arm 51, a second arm 52 and a third arm 53, wherein the first arm 51 is arranged in parallel with the second arm 52, the third arm 53 is vertically connected to the first arm 51 and the second arm 52, and the third arm 53 is located between the first arm 51 and the second arm 52. A second through hole 54 is arranged near the third arm 53 of the first arm 51, and a third through hole 55 is arranged near the third arm 53 of the second arm 52. The second through hole 54 and the third through hole 55 have the same shape, and both are adapted to the shape of the second portion 42 of the column 4, so that the second portion 42 of the column 4 can smoothly pass through the second through hole 54 and the third through hole 55 of the mounting frame 5. Since the cross-sectional shape of the second portion 42 of the column 4 is a square, the second portion 42 of the column 4 is a square tube structure, and the second through hole 54 and the third through hole 55 of the mounting frame 5 are correspondingly square holes. As an exemplary embodiment, the third portion of the column 4 is a surface of a square tube formed by one side of the second portion 42 having a square cross-sectional shape. Since the square tube of the column 4 cooperates with the square hole of the mounting frame 5, the rotation restriction effect of the square hole on the square tube realizes the effect of the mounting frame 5 restricting the rotation of the column 4. Figure 4 As shown. In order to prevent the column 4 from being accidentally pulled out, the second part 42 of the column 4 is also provided with a first through hole 44, and the first through hole 44 is perpendicular to the axis of the second part 42. The third arm 53 of the mounting frame 5 is also provided with a fourth through hole 56, and the fourth through hole 56 corresponds to the first through hole 44. The pin 7 passes through the first through hole 44 and the fourth through hole 56 to achieve relative stillness between the column 4 and the mounting frame 5 to prevent the column 4 from being accidentally pulled out of the mounting frame 5. The second arm 52 of the mounting frame 5 is also provided with a first threaded hole 57, which passes through the second arm 52, and the second threaded hole 57 is threadedly matched with the locking screw, and the mounting frame is fastened to the table of the sewing machine through the locking screw.

[0046] Reference Figure 8The present embodiment discloses a webbing adjustment frame for a sewing machine, and further includes a sleeve 6 and a thrust bearing 8, which are arranged between the disc 1 and the first clamping jaw 9, and the column 4 sequentially passes through the first clamping jaw 9, the thrust bearing 8, the sleeve 6 and the disc 1, and the thrust bearing 8 is arranged between the first clamping jaw 9 and the sleeve 6, and the thrust bearing 8 supports the sleeve 6 and the first clamping jaw 9. The sleeve 6 is partially inserted into the disc 1 and sleeved on the column 4, and the sleeve 6 and the disc 1 are interference fit, and the sleeve 6 and the column 4 are clearance fit to realize the rotation connection and axial sliding connection between the sleeve 6 and the column 4. During the conveying process, the webbing drives the disc 1 to rotate under the action of tension, and the disc 1 drives the sleeve 6 to rotate. Since the sleeve 6 abuts against the thrust bearing 8, and the other end of the thrust bearing 8 abuts against the first clamping jaw 9, and the first clamping jaw 9 is fastened to the column 4 under the action of the first bolt, the disc 1 drives the sleeve 6 to fit the thrust bearing 8 under the action of gravity, and the thrust bearing 8 rotates under the rolling of the intermediate rolling member 83, thereby realizing the smooth rotation of the disc 1. Through the cooperation between the sleeve 6 and the thrust bearing 8, the disc 1 does not directly participate in the rotation friction. Through the cooperation between the sleeve 6 and the thrust bearing 8, the smooth rotation of the disc 1 is realized, and the problem of shortened working life of the disc 1 due to rotation wear is avoided.

[0047] Reference Fig. 9 The disc 1 disclosed in this embodiment is configured as a disc-shaped structure, wherein a boss 11 is coaxially arranged, the boss 11 faces the thrust bearing 8 side, the boss 11 is coaxially arranged with a blind hole 13 and a fifth through hole 12, and the fifth through hole 12 penetrates the blind hole 13. The blind hole 13 is used to receive the shaft sleeve 6 and has an interference fit with the shaft sleeve 6.

[0048] Reference Fig.10 The sleeve 6 is configured as a hollow cylindrical structure to be sleeved on the column 4 . The sleeve 6 has a first end 61 and a second end 62 . The first end 61 of the sleeve 6 abuts against the bottom of the blind hole 13 .

[0049] Reference Fig.11 The thrust bearing 8 includes a first support member, a second support member, and a rolling member 83 located between the first support member and the second support member. The first support member, the second support member, and the rolling member 83 are coaxially arranged. The rolling member 83 is rollingly connected with the first support member and the second support member. The plane of the first support member facing the sleeve 6 is the first end face 81, and the plane of the second support member facing the disk 1 is the second end face 82. The second end portion 62 of the sleeve 6 protrudes from the boss 11 for abutting against the first end face 81 of the thrust bearing 8, and the second end face 82 of the thrust bearing 8 abuts against the first clamping jaw 9. Figure 8 Therefore, after adjusting the first clamping jaw 9 to different positions of the column 4, under the action of gravity, the disc 1 always drives the sleeve 6 to fit the thrust bearing 8, so as to realize the smooth rotation of the disc 1 and further realize the smooth output of the webbing.

[0050] Reference Fig.12 The second clamping jaw 3 includes a first body 31, a fourth arm 33, a fifth arm 34 and a set of vertical rods 35. The fourth arm 33 is connected to the first body 31, and the fifth arm 34 is connected to the first body 31. The fourth arm 33 and the fifth arm 34 are arranged in parallel and separated from each other to form a first channel. The first body 31 is provided with a sixth through hole 32 near the fourth arm 33 and the fifth arm 34, and the sixth through hole 32 is connected to the first channel. The fourth arm 33 is provided with a seventh through hole 36, and the fifth arm 34 is provided with a second threaded hole 37. The seventh through hole 36 is coaxially arranged with the second threaded hole 37, and the seventh through hole 36 is perpendicular to the sixth through hole 32. The sixth through hole 32 cooperates with the support rod 2, and the seventh through hole 36 and the second threaded hole 37 cooperate with the third bolt. The third bolt passes through the seventh through hole 36 and cooperates with the second threaded hole 37. By tightening the third bolt, the fourth arm 33 is close to the fifth arm 34, and then the sixth through hole 32 clamps the support rod 2, so as to realize the fastening of the support rod 2 and the second clamping jaw 3. The vertical rod 35 group includes two cylinders which are parallel to each other and are spaced apart from each other to form a second channel. The second channel is used to receive the webbing and allow the webbing to pass through the second channel.

[0051] Reference Fig.13The first clamping jaw 9 includes a second body 91, a sixth arm 93, a seventh arm 94, an eighth arm 95 and a ninth arm 96. The sixth arm 93 is connected to the second body 91, the seventh arm 94 is connected to the second body 91, the eighth arm 95 is connected to the second body 91, and the ninth arm 96 is connected to the second body 91. The sixth arm 93 and the seventh arm 94 are arranged in parallel and separated from each other to form a third channel. The second body 91 is provided with an eighth through hole 92 near the sixth arm 93 and the seventh arm 94. The eighth through hole 92 is connected to the third channel. The sixth arm 93 is provided The ninth through hole 931 and the seventh arm 94 are provided with a third threaded hole 941. The ninth through hole 931 and the third threaded hole 941 are coaxially arranged. The ninth through hole 931 is perpendicular to the eighth through hole 92. The eighth through hole 92 cooperates with the column 4. The ninth through hole 931 and the third threaded hole 941 cooperate with the first bolt. The first bolt passes through the ninth through hole 931 and cooperates with the third threaded hole 941. By tightening the first bolt, the sixth arm 93 is brought close to the seventh arm 94, and then the eighth through hole 92 clamps the column 4, thereby realizing the fastening of the column 4 and the first clamp 9. The eighth arm 95 and the ninth arm 96 are arranged in parallel and separated from each other to form a fourth channel. The second body 91 is provided with an eleventh through hole 97 near the eighth arm 95 and the ninth arm 96. The eleventh through hole 97 is connected to the fourth channel. The eighth arm 95 is provided with a fourth threaded hole 951. The ninth arm 96 is provided with a tenth through hole 961. The tenth through hole 961 is arranged coaxially with the fourth threaded hole 951. The tenth through hole 961 is perpendicular to the eleventh through hole 97. The eleventh through hole 97 cooperates with the support rod 2. The tenth through hole 961 and the fourth threaded hole 951 cooperate with the second bolt. The second bolt passes through the tenth through hole 961 and cooperates with the fourth threaded hole 951. By tightening the second bolt, the eighth arm 95 is close to the ninth arm 96, and then the eleventh through hole 97 clamps the support rod 2, so as to achieve the fastening of the support rod 2 and the first clamping jaw 9. The eleventh through hole 97 and the eighth through hole 92 are arranged vertically and staggered, so that the support rod 2 and the column 4 are staggered and vertical.

[0052] Implementation Method 2

[0053] This embodiment is improved on the basis of the first embodiment, and the cross-sectional shape of the second portion 42 of the column 4 in the first embodiment is changed to an octagon. Accordingly, the shapes of the first through hole 44 and the second through hole 54 of the mounting frame 5 are also changed to an octagon. Therefore, the third portion that functions to limit the rotation of the column 4 is one of the eight sides of the octagon. Specifically, referring to Fig.14The second portion 42 of the column 4 is constructed as an octagonal tube, the outer diameter of the octagonal tube is smaller than the outer diameter of the cylinder of the first portion 41, and a step surface 43 is formed between the octagonal tube and the cylinder. The step surface 43 abuts against the first arm 51 of the mounting frame 5, thereby limiting the column 4 from further inserting into the mounting frame 5, so that the column 4 remains in the current position. Since the first through hole 44 and the second through hole 54 of the mounting frame 5 are both octagonal, the cooperation between the octagonal through hole and the octagonal tube limits the rotation of the column 4, thereby keeping the column 4 and the mounting frame 5 relatively stationary.

[0054] Implementation Method 3

[0055] This embodiment is an improvement on the first embodiment, in which the cross-sectional shape of the second portion 42 of the column 4 in the first embodiment is changed to an ellipse, and accordingly, the shapes of the first through hole 44 and the second through hole 54 of the mounting frame 5 are also changed to an ellipse. Therefore, the third portion that functions to limit the rotation of the column 4 is a partial side of the ellipse. Specifically, referring to Fig.15 The second part 42 of the column 4 is configured as an elliptical tube, the minor diameter of the elliptical tube is smaller than the outer diameter of the cylinder of the first part 41, and a step surface 43 is formed between the elliptical tube and the cylinder. The step surface 43 abuts against the first arm 51 of the mounting frame 5, thereby limiting the column 4 from further inserting into the mounting frame 5, so that the column 4 remains in the current position. Since the first through hole 44 and the second through hole 54 of the mounting frame 5 are both elliptical, the cooperation between the elliptical through hole and the elliptical tube limits the rotation of the column 4, thereby keeping the column 4 and the mounting frame 5 relatively stationary.

Claims

1. A webbing adjustment frame for a sewing machine, comprising a disc (1) for storing webbing, a column (4) coaxially penetrating the disc (1) and rotatably connected to the disc (1), a first clamping jaw (9) detachably connected to the column (4), a support rod (2) detachably connected to the first clamping jaw (9), a second clamping jaw (3) detachably connected to the support rod (2), and a mounting frame (5) for mounting the column (4), wherein the column (4) and the support rod (2) are arranged vertically, the second clamping jaw (3) is used to release the webbing and adjust the output angle of the webbing, the first clamping jaw (9), the second clamping jaw (3) and the support rod (2) are located between the disc (1) and the mounting frame (5), and the mounting frame (5) is used to be fastened to the table of the sewing machine, characterized in that The column (4) comprises a first part (41) and a second part (42), the first part (41) being arranged as a cylindrical structure, the first part (41) cooperating with the first clamping claw (9), the first part (41) penetrating the disc (1) and protruding from the disc (1), the second part (42) being inserted into the mounting frame (5), a step surface (43) being formed between the first part (41) and the second part (42), the step surface (43) abutting against the mounting frame (5) and limiting the axial movement of the column (4) along the mounting frame (5), and the second part (42) further comprising a third part, the third part being inserted into the mounting frame (5) and limiting the rotation of the column (4) relative to the mounting frame (5).

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