CN115478366A - Flat seaming machine and method for reinforcing stitches thereof - Google Patents
Flat seaming machine and method for reinforcing stitches thereof Download PDFInfo
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- CN115478366A CN115478366A CN202110662650.2A CN202110662650A CN115478366A CN 115478366 A CN115478366 A CN 115478366A CN 202110662650 A CN202110662650 A CN 202110662650A CN 115478366 A CN115478366 A CN 115478366A
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- needle
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- flat seaming
- sewing
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- 238000004826 seaming Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 title abstract description 10
- 238000009958 sewing Methods 0.000 claims abstract description 89
- 230000009471 action Effects 0.000 claims abstract description 38
- 238000009966 trimming Methods 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
- D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
- D05B1/10—Double chain-stitch seams
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/10—Needle bars for multiple-needle sewing machines
- D05B55/12—Needle bars for multiple-needle sewing machines with provision for varying the distance between the needles
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a flat seaming machine and a method for reinforcing stitches thereof, wherein the flat seaming machine comprises a machine needle group, a looper, a thread hooking component, a first thread releasing component and a second thread releasing component; the machine needle group is matched with the curved needle to realize a first sewing action of the flat seaming machine; the first thread loosening assembly is used for synchronously loosening all the machine needles of the machine needle group; the needle group at least comprises a first needle and a second needle which are vertically and gradiently arranged, and the needle head position of the second needle is lower than that of the first needle; the second thread loosening assembly is used for loosening the needle thread of the second needle; the thread hooking component is used for hooking the machine needle thread of the second machine needle so as to enable the machine needle thread of the second machine needle and the bent needle to be enclosed to form a triangular thread ring; the machine needle group, the looper and the thread hooking component are matched to realize a second sewing action of the flat seaming machine; the second sewing action is for reinforcing a sewing stitch of the flat seaming machine.
Description
Technical Field
The invention relates to the technical field of flat seaming machines, in particular to a lock seaming method of a flat seaming machine.
Background
The flat seaming machine is a special sewing machine, the sewed stitch is a chain type sewing stitch, the stitch is mainly used for collar rolling, edge folding, flat seaming, splicing seam, edge trimming and the like of knitted clothes, and the special sewing effect which is difficult to finish by a common flat seaming machine is realized.
For conventional chain stitch, the flat seaming machine operates using one thread. The fabric is placed on the metal plate under the needle and pressed down by the presser foot. At the beginning of each needle, the needle passes a loop through the fabric. The looper device moves in synchronism with the needle and will catch the loop of thread before the needle is lifted. Once the needle is lifted clear of the fabric, the drive dog moves the fabric forward. When the needle passes through the fabric again, a new stitch passes through the middle of the previous stitch. The looper again grasps the loop and winds it over the next loop. In this way each coil is exactly congruent with the next coil. The main advantage of the chain stitch process is the fast stitch speed. The forming process of the three-line or four-line single-side covering chain stitch is as follows: 2 or 3 needles perforate the sewing material and lead the needle thread through the sewing material; at this time, the hook shuttle with the shuttle thread below the sewing material penetrates into the thread ring of all the needle threads, and the needle thread is sleeved on the hook shuttle (namely, on the shuttle thread) after the machine needle rises; then the feeding mechanism forwards transfers the sewing material for a certain distance, and the machine needle carries the needle thread for the second time to penetrate through the sewing material and is sleeved in a thread loop on the hook shuttle; after the hook shuttle retreats, the shuttle thread is sleeved on the machine needle (namely sleeved on the needle thread) and moves forward quickly, and then the hook shuttle is taken to penetrate into the thread loop of the needle thread; after the needle rises, the needle thread is sleeved on the hook shuttle again, the feeding mechanism transfers the sewing material forward for a certain distance, and meanwhile, the needle rod takes up the needle thread and the cam takes up the shuttle thread to complete a single-side covering chain stitch. This repeats the cyclic movement to form the seam.
However, such chain stitches are not very secure and once the thread end on one side is released, the entire stitch may fall off.
Disclosure of Invention
The invention aims to provide a flat seaming machine and a method for reinforcing stitches thereof, which are used for solving the problem that chain-type stitches sewn by a common flat seaming machine are not firm.
In order to solve the above technical problems, the present invention provides a flat seaming machine, comprising: the device comprises a machine needle group, a curved needle, a thread hooking component, a first thread releasing component and a second thread releasing component; the machine needle group is matched with the curved needle to realize a first sewing action of the flat seaming machine; the first thread loosening assembly is used for synchronously loosening all the machine needles of the machine needle group; the needle group at least comprises a first needle and a second needle which are arranged in a vertical gradient manner, and the needle head position of the second needle is lower than that of the first needle; the second thread loosening assembly is used for loosening the needle thread of the second needle; the thread hooking component is used for hooking the machine needle thread of the second machine needle so as to enable the machine needle thread of the second machine needle and the bent needle to be enclosed to form a triangular thread ring; the machine needle group, the looper and the thread hooking component are matched to realize a second sewing action of the flat seaming machine.
Preferably, the thread hooking component is arranged below a sewing table of the flat seaming machine and is positioned on the same horizontal plane with the curved needle.
Preferably, the thread hooking component hooks the needle thread of the second needle along the direction far away from the curved needle.
Preferably, the needle-sealing device further comprises a needle-sealing assembly, and the needle-sealing assembly is used for adjusting the distance between the needles in the needle group.
Preferably, the density needle assembly comprises a magnet, and the distance between the needles is adjusted by the magnetic force of the magnet.
In order to solve the problems, the invention also provides a method for reinforcing the sewing stitches by using the flat seaming machine, which comprises the following steps:
firstly, the machine needle group of the flat seaming machine is matched with the curved needle to finish the first sewing action for the first time;
secondly, the machine needle group of the flat seaming machine is matched with the curved needle to finish the first sewing action for the second time;
then, the second thread releasing assembly is started, the machine needle group moves downwards, and the thread hooking assembly hooks the machine needle thread of the second machine needle, so that the machine needle thread forms a triangular thread loop between a looper of the flat seaming machine and the thread hooking assembly;
then, the needle group continues to descend, the second needle penetrates through the triangular wire loop, the bent needle moves in the direction away from the wire hooking component, and when the needle descends to the lowest point, the needle wire on the wire hooking component naturally falls off and is sleeved on the needle;
then, the machine needle group is lifted upwards, and under the sewing action of the machine needle group, the machine needle thread forms a thread loop;
and finally, inserting the curved needle into the thread ring according to a track, enabling the machine needle group to return to the highest point, finishing the sewing action, and repeating the step S1 until all sewing actions are finished.
Preferably, the stitch obtained by said first sewing action is a chain stitch.
Preferably, a thread cutting action is also included, which occurs after all sewing actions are completed.
Optionally, the first sewing operation is performed 2 times, and the second sewing operation is performed once.
Optionally, the first sewing operation is performed 3 times, and the second sewing operation is performed once.
According to the flat seaming machine and the method for reinforcing the stitches of the flat seaming machine, the second sewing action is added in the sewing process, so that the problem of insecure sewing stitches can be solved.
Drawings
Fig. 1 to 2 are schematic position diagrams of a second thread releasing assembly, a thread hooking assembly and a thread sealing assembly of the flat seaming machine provided by the embodiment of the invention;
FIG. 3 is a schematic structural view of a thread hooking component of the flat seaming machine provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a needle sealing assembly of the flat seaming machine provided by the embodiment of the invention;
FIG. 5 is a schematic view of the operation of the thread hooking component of the flat seaming machine provided by the embodiment of the invention;
FIG. 6 is a partial enlarged view of the thread hooking component of the flat seaming machine for hooking the machine needle thread provided by the embodiment of the invention;
in the figure, the position of the upper end of the main shaft,
100-machine needle group; 101-a first needle; 102-a second needle; 200-bending the needle; 300-a thread hooking component; 401-a first slack assembly; 402-a second slack assembly; 500-dense needle assembly.
Detailed Description
The flat seaming machine and the method for reinforcing stitches thereof according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is provided solely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The inventor researches and finds that the stitches sewn by the traditional flat seaming machine are chain type sewing stitches which are mostly used for collar rolling, edge rolling, hemmed edge, flat seaming, splicing seams, trimming and the like of knitted clothes, and realizes special sewing effects which are difficult to finish by a common flat seaming machine. However, the stitches sewn by the conventional flat seaming machine are chain type sewing stitches, and if the knots at the two ends of the chain type sewing stitches are damaged, the whole sewing stitches are loosened.
The inventor further researches and discovers that if the thread knots are added in the sewing process, even if the thread ends at the two ends are loose, the whole sewing stitch is not loose, and the firmness of the sewing stitch is ensured.
Therefore, the core idea of the invention is to add the sewing action of the wire bonding on the basis of the traditional chain type sewing stitch, thereby ensuring the firmness of the sewing stitch.
Specifically, please refer to fig. 1, which is a schematic diagram of an embodiment of the present invention. As shown in fig. 1, a flat seaming machine comprises: the needle group 100, the looper 200, the thread hooking component 300, the first thread releasing component 401 and the second thread releasing component 402; the needle group 100 and the looper 200 are used in cooperation to realize a first sewing action of the flat seaming machine; the first thread releasing assembly 401 is used for synchronously releasing all the machine needles of the machine needle group 100; the needle group 100 at least comprises a first needle 101 and a second needle 102 which are vertically arranged in a gradient manner, and the needle head position of the second needle 102 is lower than that of the first needle 101; the second thread loosening assembly 402 is used for loosening the needle thread of the second needle 102; the thread hooking component 300 is configured to hook the needle thread of the second needle 102, so that the needle thread of the second needle 102 and the curved needle 200 enclose to form a triangular thread loop; the needle group 100, the looper 200 and the thread hooking component 300 are matched to realize the second sewing action of the flat seaming machine.
It will be appreciated by those skilled in the art that the present invention provides a flat-seam machine that adds an additional thread-releasing assembly, i.e., the second thread-releasing assembly 402, as compared to conventional flat-seam machines. The first thread releasing assembly 401 has no difference from the thread releasing assembly in the conventional flat seaming machine in position and effect, and is used for synchronously releasing all the machine needle threads of the machine needle group 100 of the flat seaming machine. The second thread slacking 402 is used to coordinate the second sewing operation, i.e., the wire bonding operation.
The needle group 100 and the looper 200 are both in the prior art of a conventional flat seaming machine, the needle group 100 at least includes two vertically arranged needles (if the needles are more than three, the needles are arranged at equal intervals along the same plane), and the needles are arranged in a gradient manner, including a first needle 101 with a needle head above and a second needle 102 with a needle head below. The needle group 100 and the looper 200 are combined to wind the needle thread and the looper thread.
In addition, for the conventional flat seaming machine, the conventional flat seaming machine performs a sewing operation once the needle set 100 performs an up-and-down movement, and in this embodiment, the sewing operation of the conventional sewing machine is a first sewing operation, and the stitch to be sewn by the first sewing operation is a chain stitch. Through the improvement of the inventor, the flat seaming machine provided by the invention can also perform the second sewing action, and the second sewing action is completed by the cooperation of the thread hooking component 300. The thread hooking component 300 is arranged below a sewing table of the flat seaming machine and is positioned on the same horizontal plane with the looper 200, and the thread hooking component 300 hooks the needle thread of the second needle 102 along a direction far away from the looper 200 before the second needle 102 descends below the sewing table of the flat seaming machine, so that the needle thread of the second needle 102 and the looper 200 are enclosed to form a triangular thread loop, and the second needle 102 conveniently penetrates through the triangular thread loop, thereby forming a thread joint.
The invention also provides a closed stitch component 500, as shown in fig. 4, the closed stitch component 500 comprises a magnet inside, and the distance between the needles in the needle group is adjusted by the magnet, so that the sewing stitch is more compact.
The invention also provides a method for reinforcing the sewing stitch of the flat seaming machine, which comprises the following steps:
first, the needle group 100 of the flat-seam machine cooperates with the looper 200 to complete the first sewing operation, which is an operation of completing a basic chain stitch, starting with the needle group 100 moving downward from the highest position, and ending again at the highest position after the needle group 100 moves to the lowest position. The first sewing action is performed twice, taking into full account the reinforcement effect of the sewing stitches. It should be understood by those skilled in the art that the first sewing action can be performed once or more than three times, and the number of the first sewing actions can be changed according to the specific actual requirement and is within the protection scope of the present invention.
Next, the second thread releasing assembly 402 is turned on, the needle unit 100 moves downward, the thread hooking assembly 300 hooks the needle thread of the second needle 102 before the second needle 102 descends below the sewing table of the flat seaming machine, the needle thread of the second needle 102 is wound on the looper 200, and the hooking action of the thread hooking assembly 300 causes the needle thread to form a triangular thread loop between the looper and the thread hooking assembly of the flat seaming machine.
Then, the needle group 100 continues to descend, the second needle 102 passes through the triangular loop, the looper 200 moves away from the thread hooking component 300, and when the needle group 100 descends to the lowest point, the needle thread on the thread hooking component 300 naturally falls off and is sleeved on the needle. Compared with the common chain type sewing stitch, the flat seaming machine provided by the invention makes a knot on the needle thread of the second needle 102 and sleeves the knot on the second needle 102, so that the effect of stitch reinforcement is achieved.
Then, as in the conventional flat seaming machine, the needle group 100 is lifted up, one end of the part, below the sewing table, of all the needle threads of the needle group 100 is fixed on the cloth due to resistance of the sewn cloth, the other end of the part, below the sewing table, of all the needle threads of the needle group 100 moves upwards due to traction of the needle group, the linear distance between the two ends of the part, below the sewing table, of the same needle thread is reduced, and a thread loop is formed between the needle thread and the corresponding needle.
Then, the looper 200 is inserted into the loop according to the trajectory, the needle group 100 returns to the highest point, the sewing operation is finished, and the step S1 is repeated until all sewing operations are completed.
And finally, the flat seaming machine performs thread cutting action to cut all machine needle threads and looper threads, and sewing is completed.
In summary, in the flat seaming machine and the method for reinforcing the stitches thereof provided by the embodiment of the invention, the second sewing action is added in the sewing process, so that the problem of insecure sewing stitches can be solved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A flat seaming machine is characterized by comprising a machine needle group, a looper, a thread hooking component, a first thread loosening component and a second thread loosening component;
the machine needle group is matched with the curved needle to realize a first sewing action of the flat seaming machine;
the first thread loosening assembly is used for synchronously loosening all the machine needles of the machine needle group;
the needle group at least comprises a first needle and a second needle which are arranged in a vertical gradient manner, and the needle head position of the second needle is lower than that of the first needle;
the second thread loosening assembly is used for loosening the needle thread of the second needle;
the thread hooking component is used for hooking the machine needle thread of the second machine needle so as to enable the machine needle thread of the second machine needle and the bent needle to be enclosed to form a triangular thread ring;
the machine needle group, the looper and the thread hooking component are matched to realize a second sewing action of the flat seaming machine;
the second sewing action is used to reinforce a sewing stitch of the flat seaming machine.
2. The flat seaming machine of claim 1 wherein the thread hooking component is disposed below a seam table of the flat seaming machine at a level with the looper.
3. The flat seaming machine of claim 2 wherein the thread hooking component hooks the needle thread of the second needle in a direction away from the looper.
4. The flat seaming machine of claim 1 further comprising a closed stitch assembly for adjusting the distance between the needles in the set.
5. The flat seaming machine of claim 4 wherein the pin sealer assembly includes a magnet, the distance between the pins being adjusted by the magnetic force of the magnet.
6. A method of fastening a sewing stitch with the flat seaming machine of claim 1, comprising the steps of:
s1: the machine needle group of the flat seaming machine is matched with the curved needle to finish the first sewing action for the first time;
s2: the machine needle group of the flat seaming machine is matched with the curved needle to finish the first sewing action for the second time;
s3: the second thread releasing assembly is started, the machine needle group moves downwards, and the thread hooking assembly hooks the machine needle thread of the second machine needle, so that a triangular thread loop is formed between the looper and the thread hooking assembly of the flat seaming machine by the machine needle thread;
s4: the needle group continues to descend, the second needle penetrates through the triangular wire loop, the bent needle moves in the direction far away from the wire hooking component, and when the needle descends to the lowest point, the needle wire of the second needle hooked on the wire hooking component naturally falls off and is sleeved on the second needle;
s5: the machine needle group is lifted upwards, and the machine needles of the machine needle group form a linear ring under the sewing action of the machine needle group;
s6: and inserting the curved needle into the thread ring according to the track, returning the machine needle group to the highest point, finishing the sewing action, and starting to repeat the step S1 until all sewing actions are finished.
7. The flat seaming machine reinforced sewing stitch as defined in claim 6 wherein the stitch resulting from the first sewing action is a chain stitch.
8. The flat seaming machine seam-lock stitch method of claim 6 further comprising a thread trimming operation, the thread trimming operation occurring after all sewing operations are completed.
9. The flat seaming machine consolidation stitch method of claim 6, wherein the first sewing action is performed every 2 times and the second sewing action is performed.
10. The flat seaming machine lock-up stitch method of claim 9 wherein the first sewing action is performed every 3 times and the second sewing action is performed once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110662650.2A CN115478366A (en) | 2021-06-15 | 2021-06-15 | Flat seaming machine and method for reinforcing stitches thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110662650.2A CN115478366A (en) | 2021-06-15 | 2021-06-15 | Flat seaming machine and method for reinforcing stitches thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115478366A true CN115478366A (en) | 2022-12-16 |
Family
ID=84419227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110662650.2A Pending CN115478366A (en) | 2021-06-15 | 2021-06-15 | Flat seaming machine and method for reinforcing stitches thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115478366A (en) |
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2021
- 2021-06-15 CN CN202110662650.2A patent/CN115478366A/en active Pending
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