Auxiliary folder assembly for sewing machine

Abstract

The utility model relates to the technical field of sewing machines, in particular to an auxiliary folder assembly for a sewing machine, which comprises a folder piece, an assembly piece and a connecting piece, one end of the assembly piece is connected with the folder piece, one end of the assembly piece away from the folder piece is in magnetic connection with the connecting piece, and the connecting piece comprises a fixing plate and a magnetic block fixedly connected to the top of the fixing plate. The fixing plate is fixed to a table top of the sewing machine, a plurality of adjusting grooves are formed in the side, away from the folder, of the assembly part, and when the sewing position is adjusted, the magnetic blocks are embedded into the corresponding adjusting grooves, so that the assembly part is connected with the magnetic blocks in a magnetic attraction mode. When the pull cylinder part is replaced, the assembly part is forced upwards, the magnetic block is separated from the adjusting groove, then the magnetic block is embedded in the adjusting groove of a new assembly part in a magnetic attraction mode, replacement of the pull cylinder part can be completed, and the replacement method is simple and rapid. By changing the adjusting mode of the adjusting groove connected with the magnetic block in a magnetic attraction mode, the distance between the folder piece and the connecting piece can be adjusted, and therefore different sewing widths of the edge covering strip can be adjusted.

Description

Technical Field

[0001] The present application relates to the field of sewing machine technology, and in particular to an auxiliary pull cylinder assembly for a sewing machine. Background Art

[0002] Quilt cores, pillow cores, etc. are items frequently used in people's daily lives. In order to make quilt cores, pillow cores, etc. more beautiful, today's quilt cores, pillow cores, etc. are mostly sewn with edging strips with soft cores. The soft cores are mostly made of cotton thread, wool thread or velvet thread. The soft core is sewn to the edging strips by a sewing machine to form edging strips, and then the sewn edging strips are sewn to the edges of the quilt core and pillow core.

[0003] Nowadays, the sewing of edging strips mostly uses a sewing machine in conjunction with a pull tube installed on the sewing machine. In order to adapt to different models of sewing machines and different sewing distances of edging strips, the pull tube is usually provided with a waist-shaped hole. The screws are passed through the waist-shaped hole to complete the connection and fixation between the pull tube and the sewing machine table. The sewing position is adjusted by installing it in different positions of the waist-shaped hole. When the pull tube needs to be replaced or adjusted, the screws need to be loosened, and the subsequent assembly of the new pull tube also needs to be tightened, which is very inconvenient. Utility Model Content

[0004] In order to improve the inconvenience of replacing or adjusting a pull cylinder, the present application provides an auxiliary pull cylinder assembly for a sewing machine.

[0005] The auxiliary pull-cylinder assembly for a sewing machine provided in the present application adopts the following technical solution:

[0006] An auxiliary pull-bar assembly for a sewing machine comprises a pull-bar member, an assembly member and a connecting member, wherein one end of the assembly member is connected to the pull-bar member, and the end of the assembly member away from the pull-bar member is magnetically connected to the connecting member, the connecting member comprises a fixed plate and a magnetic block fixedly connected to the top of the fixed plate, the fixed plate is fixed to the sewing machine table, and a plurality of adjustment grooves are provided on the side of the assembly member away from the pull-bar. When adjusting the sewing position, the magnetic block is embedded in a corresponding one of the adjustment grooves, so that the assembly member is magnetically connected to the magnetic block.

[0007] By adopting the above technical solution, the fixed plate is fixedly connected to the sewing machine table, and then the adjustment groove of the assembly part is aligned with the magnetic block fixedly connected to the fixed plate, so that the magnetic block is magnetically embedded in the adjustment groove, completing the installation of the pull tube part and the sewing machine table.

[0008] When the pull cylinder part needs to be replaced, it is only necessary to push the assembly part upward to separate the magnetic block from the adjustment slot, and then align the adjustment slot of the new assembly part equipped with the new pull cylinder part with the magnetic block, so that the magnetic block is magnetically embedded in the adjustment slot of the new assembly part. The replacement of the pull cylinder part can be completed. The replacement method is simple and quick, and there is no need to repeatedly tighten and loosen the screws, which improves the convenience of replacing the pull cylinder.

[0009] When it is necessary to sew edging strips of different widths, push the assembly upward to separate the magnetic block from the adjustment slot, and then align the adjustment slot at the appropriate position of the assembly with the magnetic block, so that the magnetic block is magnetically embedded in another adjustment slot of the assembly to complete the adjustment of the sewing width adapted to the pull tube. When the sewing width of the edging strip is narrower, the magnetic block is embedded in the adjustment slot magnetically close to the pull tube piece, so that the distance between the pull tube piece and the connecting piece is shortened, thereby narrowing the sewing width of the edging strip. When the sewing width of the edging strip is wider, the magnetic block is embedded in the adjustment slot magnetically away from the pull tube piece, so that the distance between the pull tube piece and the connecting piece is increased, thereby widening the sewing width of the edging strip. Through the above adjustment method, the distance between the pull tube piece and the connecting piece can be adjusted, thereby adjusting different sewing widths of the edging strip, thereby improving the practicality of the pull tube assembly.

[0010] Optionally, the connecting member also includes a limiting protrusion fixedly connected to the fixing plate at the top of the fixing plate, and a plurality of limiting grooves are opened on the side of the assembly member away from the pull cylinder. When the magnetic block is embedded in the adjustment groove, the limiting protrusion is embedded in the corresponding limiting groove.

[0011] By adopting the above technical solution, the limiting groove limits the movement of the limiting protrusion, so that the movement of the fixed plate is restricted, and the movement of the pull tube member fixed to the fixed plate is restricted. The continuous movement during the sewing process of the edging strip will not cause the position of the pull tube member to shift, thereby improving the stability of the sewing position of the edging strip.

[0012] Optionally, the connecting member further comprises a screw, the fixing plate is provided with a waist-shaped hole, and the screw passes through the waist-shaped hole and is threadedly connected to the sewing machine table.

[0013] By adopting the above technical solution, screws are passed through different positions of the waist-shaped holes and threadedly fixed on the sewing machine table. The position of the fixed plate can be adjusted and fixed, thereby adjusting the position of the magnetic block on the fixed plate and fixing it. In combination with the adjustment slots at different positions on the assembly parts, the adjustment range of the position of the pull tube part on the sewing machine table is further expanded, thereby improving the adjustment range of the sewing width of the edging strip, and further improving the practicality of the pull tube assembly.

[0014] Optionally, the pulling cylinder component includes a soft core guide cylinder, an edging band guide cylinder and a curling cylinder, the soft core guide cylinder and the edging band guide cylinder are both arranged on the top of the assembly component, the discharge end of the soft core guide cylinder and the discharge end of the edging band guide cylinder are connected, and the discharge end of the edging band guide cylinder and the feed end of the curling cylinder are connected.

[0015] By adopting the above technical scheme, the edging tape guide tube guides the edging tape to the feeding end of the curling tube, and the soft core guide tube guides the soft core into the edging tape, so that the soft core abuts against the edging tape, and then the edging tape and the soft core enter the curling tube at the same time for curling, so that the edging tape is covered outside the soft core, and finally the sewing machine sews the edging tape and the soft core covered in the edging strip to obtain the edging strip.

[0016] Optionally, the diameter of the hemming tape guide cylinder gradually decreases from the feed end to the discharge end.

[0017] By adopting the above technical solution, the hemming tape passes through the hemming tape guide cylinder with diameters decreasing from large to small, and the width direction of the hemming tape is restricted. The hemming tape can only be folded inward from the edges on both sides in the width direction, so that the two sides of the hemming tape tend to fold, so that after the hemming tape enters the winding sleeve, the two sides of the hemming tape are easier to fold, which makes it easier to wrap the soft core in the folded hemming tape, thereby improving the smoothness of the curling wrapping.

[0018] Optionally, the diameter of the crimping tube at the feed end is smaller than the diameter of the hemming band guide tube at the discharge end, and the diameter of the crimping tube gradually decreases from the feed end to the discharge end.

[0019] By adopting the above technical scheme, the hemming tape and the soft core simultaneously pass through the discharge end of the hemming tape guide cylinder, the feed end of the hemming cylinder and the discharge end of the hemming cylinder with cylinder diameters from large to small, and the width direction of the hemming tape is further restricted, and it is gradually rolled up and folded inward from the two side edges in the width direction to a state close to being folded in half. At the same time, the soft core abuts against the inner side of the folded hemming tape, so that the hemming tape and the soft core can enter the bottom of the sewing machine at the same time, completing the sewing of the hemming tape and the soft core, thereby improving the stability of the hemming strip sewing.

[0020] Optionally, the pull cylinder member further includes a traction frame, and a discharge end of the traction frame is connected to a feed end of the hemming band guide cylinder.

[0021] By adopting the above technical solution, the traction frame pulls and straightens the edging tape, so that the edging tape enters the edging tape guide cylinder more straightly, and the width of the edging tape is consistent with that of the rolled edging tape. When curling or wrinkles appear, the width of the edging tape will change when it enters the edging tape guide cylinder, and thus the curling position of the edging tape will change when it enters the edging tape guide cylinder and the subsequent curling cylinder, resulting in inconsistent sewing widths of the subsequently sewn edging strips. The use of the traction frame can improve the quality stability of the sewn edging strips.

[0022] Optionally, the pull-bar component includes a limit plate, which is installed on the inner wall of the edging band guide tube. The limit plate and the inner wall of the edging band guide tube form a guide channel, and the guide channel is connected to the through hole of the soft core guide tube. When the pull-bar component is used, the edging band passes through the guide channel and abuts against the soft core, enters into the interior of the curling tube, and then enters into the bottom of the sewing machine.

[0023] By adopting the above technical solution, when the edging tape enters the edging tape guide tube, the limit plate limits the rolling distance of the edges of the edging tape on both sides in the guide channel, so that it is not easy for the edging tape to have a rolling distance that is too large on one side or both sides, thereby improving the quality stability of the sewn edging strip.

[0024] Optionally, the limiting plate is provided with a pulling hole.

[0025] By adopting the above technical solution, the pulling hole makes it easy for people to use tools such as an awl to pull the hemming tape from the narrow second guide cavity to the hemming tube, thereby improving the convenience of use.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When the pull-bar part needs to be replaced, it is only necessary to push the assembly upward to separate the magnetic block from the adjustment slot, and then align the adjustment slot of the new assembly equipped with the new pull-bar part with the magnetic block, so that the magnetic block is magnetically embedded in the adjustment slot of the new assembly, and the pull-bar part can be replaced. The replacement method is simple and quick, and there is no need to repeatedly tighten and loosen the screws, which improves the convenience of pull-bar replacement;

[0028] 2. By changing the adjustment mode of the adjustment slot magnetically connected to the magnetic block, the distance between the pull tube and the connecting piece can be adjusted, so as to adjust the different sewing widths of the hemming strip, thereby improving the practicality of the pull tube assembly;

[0029] 3. The limiting groove limits the movement of the limiting protrusion, so that the movement of the fixed plate is limited, and the movement of the pull tube member fixed to the fixed plate is limited. The continuous movement during the sewing process of the edging strip will not cause the position of the pull tube member to shift, thereby improving the stability of the sewing position of the edging strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the auxiliary pull cylinder assembly for a sewing machine described in the present application.

[0031] Figure 2 It is a structural schematic diagram of the auxiliary pull cylinder assembly for a sewing machine described in the present application from another angle.

[0032] Figure 3It is a structural schematic diagram of the auxiliary pull cylinder assembly for a sewing machine described in the present application from another angle.

[0033] Explanation of the reference numerals: 1. Pulling cylinder; 11. Soft core guide cylinder; 12. Edge band guide cylinder; 13. Curling cylinder; 14. Traction frame; 15. Limiting plate; 151. Pulling hole; 2. Assembly part; 21. Adjusting groove; 22. Limiting groove; 3. Connecting part; 31. Fixing plate; 311. Waist-shaped hole; 32. Magnetic block; 33. Limiting protrusion; 34. Screw. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] The present application embodiment discloses an auxiliary pull cylinder assembly for a sewing machine. Figure 1 and 2 The auxiliary pull-bar assembly for a sewing machine comprises a pull-bar component 1, an assembly component 2 and a connecting component 3.

[0036] The pull-up drum component 1 comprises a soft core guide drum 11, an edge band guide drum 12, a crimping drum 13, a traction frame 14 and a limit plate 15. The edge band guide drum 12, the crimping drum 13 and the traction frame 14 are all fixedly connected to one side of the fixed assembly component 2. The end of the assembly component 2 away from the pull-up drum component 1 is magnetically connected to the connecting component 3. The soft core guide drum 11 is connected to the edge band guide drum 12. The diameter of the edge band guide drum 12 gradually decreases in the direction of the edge band transmission. The diameter of the crimping drum 13 gradually decreases in the direction of the edge band transmission. The drum at the feeding end of the crimping drum 13 is The diameter is smaller than the diameter of the discharge end of the edging band guide cylinder 12, the discharge end of the soft core guide cylinder 11 and the discharge end of the edging band guide cylinder 12 are connected, and the discharge end of the edging band guide cylinder 12 and the feed end of the curling cylinder 13 are connected. Specifically, the end of the edging band guide cylinder 12 with the smallest diameter is connected to the end of the curling cylinder 13 with the largest diameter; the traction frame 14 is preferably a serpentine traction frame 14, and the discharge end of the traction frame 14 is connected to the feed end of the edging band guide cylinder 12. Specifically, the traction frame 14 is connected to the end of the curling cylinder 13 with the largest diameter.

[0037] The limiting plate 15 is installed on the inner wall of the edge band guide cylinder 12. Specifically, the top of the limiting plate 15 abuts against the top inner wall of the edge band guide cylinder 12, and the bottom of the limiting plate 15 abuts against the bottom inner wall of the edge band guide cylinder 12. The length direction of the limiting plate 15 is consistent with the length direction of the edge band guide cylinder 12; the limiting plate 15 and the inner wall of the edge band guide cylinder 12 form a guide channel, and the guide channel is connected to the through hole of the soft core guide cylinder 11. When the pull cylinder 1 is used, the edge band passes through the guide channel and abuts against the soft core, and Enter into the inside of the hemming cylinder 13, and then enter into the bottom of the sewing machine, the soft core guide cylinder 11 can be optionally connected to the limiting plate 15 or connected to the edging tape guide cylinder 12, preferably, the soft core guide cylinder 11 is connected to the edging tape guide cylinder 12; the limiting plate 15 is provided with a pulling hole 151, the pulling hole 151 is a strip hole, the length direction of the pulling hole 151 is consistent with the length direction of the limiting plate 15, the strip hole covers a longer length, and an awl can be used to pull the edging tape to the discharge end of the edging tape guide cylinder 12 from multiple directions.

[0038] Reference Figure 3 The connecting member 3 includes a fixing plate 31, a magnetic block 32, a limiting protrusion 33 and a screw 34. The fixing plate 31 is provided with a waist-shaped hole 311, and the screw 34 is threaded through the waist-shaped hole 311 and connected to the sewing machine table; the magnetic block 32 and the limiting protrusion 33 are both fixedly connected to the top of the fixing plate 31, and the magnetic block 32 and the limiting protrusion 33 can be arranged in parallel or cross-arranged, preferably in parallel; the magnetic piece can be selected as a circular magnetic piece, a square magnetic piece or a triangular magnetic piece, preferably a circular magnetic piece.

[0039] The assembly part 2 can be selected as an iron-containing assembly part 2 or a cobalt-containing assembly part 2 or a nickel-containing assembly part 2, preferably an iron-containing assembly part 2; a plurality of adjustment grooves 21 and a plurality of limit grooves 22 are provided on the side of the assembly part 2 away from the pull cylinder part 1, specifically, the adjustment grooves 21 are arranged in sequence along the direction away from the pull cylinder part 1, the limit grooves 22 correspond to the adjustment grooves 21 one by one, the limit grooves 22 and the adjustment grooves 21 are arranged in parallel or crosswise, preferably in parallel, the adjustment grooves 21 can be circular adjustment grooves 21 or square adjustment grooves 21 or triangular adjustment grooves 21, preferably circular adjustment grooves 2 1. Several adjusting grooves 21 are interconnected. When the adjusting groove 21 is a circular adjusting groove 21, the groove wall connected by the adjusting groove 21 is wavy, and the length of a single wave is less than half of the circumference of the circular adjusting groove 21. On the same length, more adjusting grooves 21 can be set, and the adjustment accuracy is improved. The magnetic block 32 is embedded in the adjusting groove 21; when adjusting the sewing position, the magnetic block 32 is embedded in a corresponding one of the adjusting grooves 21, and the limiting protrusion 33 is embedded in the corresponding limiting groove 22, so that the assembly part 2 is magnetically connected with the magnetic block 32.

[0040] The implementation principle of an auxiliary pull-bar component 1 for a sewing machine in an embodiment of the present application is as follows: first, the pull-bar component 1 is installed on the sewing machine table, and the screw 34 is first passed through the appropriate position of the waist-shaped hole 311 and the threaded hole of the sewing machine table, and the screw 34 is tightened to complete the installation of the fixed plate 31; then, the appropriate adjustment groove 21 of the assembly part 2 is aligned with the magnetic block 32 and placed, so that the magnetic block 32 is embedded in the appropriate adjustment groove 21 and magnetically attracted, thereby completing the installation of the pull-bar component 1 on the sewing machine table.

[0041] Then the hemming tape is wound around the serpentine traction frame 14, and then enters the guide channel through the feeding end of the hemming tape guide cylinder 12, the soft core enters the soft core guide cylinder 11 through the feeding end of the soft core guide cylinder 11, and then the hemming tape leaves the hemming tape guide cylinder 12, the soft core leaves the discharge end of the soft core guide cylinder 11 and enters the guide channel to abut against the inner wall of the curved hemming tape, and then the hemming tape and the soft core enter the curling cylinder 13 together, and finally leave the discharge end of the curling cylinder 13 and enter the bottom of the sewing machine for sewing.

[0042] When the pull cylinder component 1 needs to be replaced, the assembly component 2 is pushed upward to separate the magnetic block 32 from the adjustment groove 21, and then the adjustment groove 21 of the new assembly component 2 equipped with the new pull cylinder component 1 is aligned with the magnetic block 32 and placed, so that the magnetic block 32 is magnetically embedded in the adjustment groove 21 of the new assembly component 2, and the replacement of the pull cylinder component 1 is completed.

[0043] When it is necessary to sew edging strips of different widths, push the assembly part 2 upward to separate the magnetic block 32 from the adjustment slot 21, and then align the adjustment slot 21 at the appropriate position of the assembly part 2 with the magnetic block 32, so that the magnetic block 32 is magnetically embedded in the other adjustment slot 21 of the assembly part 2 to complete the adjustment of the sewing width adapted to the pull tube; when the edging strip needs to be sewn with a narrower width, the magnetic block 32 is embedded in the adjustment slot 21 magnetically close to the pull tube part 1, and when the edging strip needs to be sewn with a wider width, the magnetic block 32 is embedded in the adjustment slot 21 magnetically away from the pull tube part 1.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary pull-cylinder assembly for a sewing machine, characterized in that: The invention comprises a pull-bar pull member (1), an assembly member (2) and a connecting member (3), wherein one end of the assembly member (2) is connected to the pull-bar pull member (1), and the end of the assembly member (2) away from the pull-bar pull member (1) is magnetically connected to the connecting member (3), and the connecting member (3) comprises a fixing plate (31) and a magnetic block (32) fixedly connected to the top of the fixing plate (31), and the fixing plate (31) is fixed to the sewing machine table, and a plurality of adjustment grooves (21) are provided on the side of the assembly member (2) away from the pull-bar pull member, and when adjusting the sewing position, the magnetic block (32) is embedded in a corresponding one of the adjustment grooves (21), so that the assembly member (2) is magnetically connected to the magnetic block (32).

2. The auxiliary pull-cylinder assembly for a sewing machine according to claim 1, characterized in that: The connecting member (3) also includes a limiting protrusion (33) fixedly connected to the fixing plate (31) at the top of the fixing plate (31), and a plurality of limiting grooves (22) are provided on the side of the assembly member (2) away from the pull cylinder. When the magnetic block (32) is embedded in the adjustment groove (21), the limiting protrusion (33) is embedded in the corresponding limiting groove (22).

3. The auxiliary pull-bar assembly for a sewing machine according to claim 1, characterized in that: The connecting member (3) further comprises a screw (34); the fixing plate (31) is provided with a waist-shaped hole (311); the screw (34) passes through the waist-shaped hole (311) and is threadedly connected to the sewing machine table.

4. The auxiliary pull-bar assembly for a sewing machine according to claim 1, characterized in that: The pulling cylinder component (1) comprises a soft core guide cylinder (11), an edging band guide cylinder (12) and a curling cylinder (13); the soft core guide cylinder (11) and the edging band guide cylinder (12) are both arranged on the top of the assembly component (2); the discharge end of the soft core guide cylinder (11) and the discharge end of the edging band guide cylinder (12) are connected; the discharge end of the edging band guide cylinder (12) and the feed end of the curling cylinder (13) are connected.

5. The auxiliary pull-bar assembly for a sewing machine according to claim 4, characterized in that: The diameter of the hemming band guide cylinder (12) gradually decreases from the feeding end to the discharging end.

6. The auxiliary pull-bar assembly for a sewing machine according to claim 4, characterized in that: The diameter of the crimping cylinder (13) at the feeding end is smaller than the diameter of the hemming tape guide cylinder (12) at the discharging end, and the diameter of the crimping cylinder (13) gradually decreases from the feeding end to the discharging end.

7. The auxiliary pull-bar assembly for a sewing machine according to claim 4, characterized in that: The pull tube member (1) further comprises a traction frame (14), wherein the discharge end of the traction frame (14) is connected to the feed end of the hemming band guide tube (12).

8. The auxiliary pull-bar assembly for a sewing machine according to claim 4, characterized in that: The pull-bar component (1) includes a limit plate (15), and the limit plate (15) is installed on the inner wall of the hemming band guide tube (12). The limit plate (15) and the inner wall of the hemming band guide tube (12) form a guide channel, and the guide channel is connected to the through hole of the soft core guide tube (11). When the pull-bar component (1) is used, the hemming band passes through the guide channel and abuts against the soft core, and enters into the interior of the hemming tube (13), and then enters into the bottom of the sewing machine.

9. The auxiliary pull-bar assembly for a sewing machine according to claim 8, characterized in that: The limiting plate (15) is provided with a pulling hole (151).

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