Thread trimming mechanism of embroidery machine
By introducing the matching design of the thread crimping and the fixed thread clamping parts into the thread cutting mechanism of the embroidery machine, the problems of locking thread shrapnel wear and unstable bottom line positioning are solved, and the stable positioning of the bottom line is achieved to ensure the normal embroidery of the embroidery machine.
Patent Information
- Application Number
- CN202422521136.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-18
AI Technical Summary
In the thread cutting mechanism of the existing embroidery machine, the locking shrapnel and the moving blade are too tight or too loose, resulting in unstable clamping force of the bottom line, affecting the embroidery effect, and the locking shrapnel are prone to wear and unable to effectively position the bottom line.
The wire crimping parts are used to cooperate with the wire crimping parts. The wire crimping parts include sponge blocks or rubber blocks. Through the design of the wire crimping wool and the wire crimping trough, the stable positioning of the bottom line is achieved to prevent running.
The stable positioning of the bottom line is achieved, and the problem of excessive or too small clamping force of the bottom line is avoided, ensuring that the embroidery machine is properly embroidered.
Smart Images
Figure CN223176396U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of embroidery machines, relates to a component of an embroidery machine, and particularly relates to a thread cutting mechanism of an embroidery machine. Background Art
[0002] The thread cutting mechanism of an embroidery machine is used to cut the upper thread and the bobbin thread after embroidery. At present, the existing thread cutting mechanism of an embroidery machine includes a swingable moving blade, a fixed blade and a thread locking elastic piece. The fixed blade is located above the moving blade, and the thread locking elastic piece is located below the moving blade. During operation, an external driving mechanism drives the moving blade to swing to cut the thread. After the moving blade and the fixed blade intersect to cut the thread, the thread locking elastic piece cooperates with the moving blade to clamp and lock the bobbin thread, so as to position the bobbin thread and prevent the bobbin thread from running out of position, so that when embroidering next time, the upper thread and the bobbin thread form a loop to pull up the bobbin thread and complete the embroidery of the embroidered product.
[0003] The disadvantages of the above existing thread cutting mechanism are as follows: when the cooperation between the thread locking elastic piece and the moving blade is too tight, the clamping force on the bobbin thread is too large, and the upper thread cannot pull up the bobbin thread, resulting in abnormal embroidery. In addition, as the working time goes by, the thread locking elastic piece is prone to wear and the elasticity becomes poor, which leads to loose cooperation between the thread locking elastic piece and the moving blade, and the clamping force on the bobbin thread is too small, resulting in the inability to lock the bobbin thread, and the bobbin thread is prone to running out of position. When embroidering again, the upper thread and the bobbin thread cannot effectively form a loop to pull up, resulting in abnormal embroidery. Therefore, it is very necessary to design a thread cutting mechanism for an embroidery machine to solve the above technical problems. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a thread cutting mechanism for an embroidery machine to solve the above technical problems.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a thread cutting mechanism for an embroidery machine, including a base, a moving blade and a fixed blade. A wire pressing member is arranged on the moving blade, and a wire positioning member is arranged on the base. When the moving blade is in the state of cutting the thread, the wire pressing member cooperates with the wire positioning member, and the wire pressing member positions the bobbin thread of the embroidery machine between the wire positioning member and the wire pressing member.
[0006] Furthermore, the fixed blade is located on one side of the moving blade, the wire positioning member is located on the other side of the moving blade, the side of the moving blade away from the fixed blade is the back surface, and the wire pressing member is arranged on the back surface of the moving blade.
[0007] Furthermore, the wire positioning member includes a body, the body is fixed on the moving blade, and the body is provided with wire pressing hairs. When the moving blade is in the state of cutting the thread, the wire pressing hairs cooperate with the wire positioning member, and the wire pressing hairs position the bobbin thread of the embroidery machine at the wire positioning member.
[0008] Further, the thread positioning member is a sponge block or a rubber block.
[0009] Further, a thread positioning groove for the bobbin thread of the embroidery machine to pass through is provided on the thread positioning member. When the moving blade is in the state of cutting the thread, the pressing member covers the notch of the thread positioning groove, so as to limit the bobbin thread of the embroidery machine in the thread positioning groove.
[0010] Further, the thread positioning member is provided with a protruding arm, and a protruding portion is provided on the protruding arm, and the thread positioning groove is provided on the protruding portion.
[0011] Further, the bottom of the thread positioning groove extends to the protruding arm.
[0012] Further, the fixed blade is fixed to the base, a rotatable rotating shaft is provided on the base, the moving blade is installed on the rotating shaft, and the output end of the external driving mechanism is connected to the rotating shaft. The external driving mechanism drives the rotating shaft to rotate, so as to drive the moving blade to swing to cut the thread.
[0013] The beneficial effects of the present utility model: The thread cutting mechanism of the embroidery machine of the present utility model has a novel and unique structure. When the thread cutting mechanism cuts the upper thread and the bobbin thread, the pressing member on the moving blade cooperates with the thread positioning member to position the bobbin thread and prevent the bobbin thread from running out of position. Compared with the thread cutting mechanisms of the prior art, the situation that the bobbin thread is locked too tightly or the bobbin thread cannot be locked will not occur. Therefore, the thread positioning of the thread cutting mechanism of the present utility model is more stable and reliable, and can more effectively ensure the embroidery work of the embroidery machine. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of the thread cutting mechanism according to an embodiment of the present utility model.
[0015] Figure 2 is a front view of the thread cutting mechanism according to an embodiment of the present utility model.
[0016] Figure 3 is Figure 2 a bottom view of
[0017] Figure 4 is a schematic structural diagram of the thread cutting mechanism when the fixed blade is removed.
[0018] Figure 5 is Figure 4 an enlarged view of I in
[0019] Figure 6 is a first schematic structural diagram when the moving blade is installed on the rotating shaft.
[0020] Figure 7 is a second schematic structural diagram when the moving blade is installed on the rotating shaft.
[0021] Figure 8Yes Figure 7 Enlarged view of H therein.
[0022] Figure 9 It is the first three-dimensional view of the wire-aligning member.
[0023] Figure 10 It is the second three-dimensional view of the wire-aligning member.
[0024] Description of reference numerals:
[0025] Base 1, moving blade 2, fixed blade 3, wire-aligning member 4, wire-pressing member 5, rotating shaft 6;
[0026] Back surface 21;
[0027] Protruding portion 41, extending arm 42;
[0028] Wire-aligning groove 411;
[0029] Body 51, wire-pressing hairs 52. Specific embodiments
[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0031] As Figures 1 - 3 shown, the thread cutting mechanism of the embroidery machine in this embodiment includes a base 1, a moving blade 2, and a fixed blade 3. The fixed blade 3 is fixed to the base 1. A rotatable rotating shaft 6 is installed on the base 1. The moving blade 2 is installed at the upper end of the rotating shaft 6. A wire-aligning member 4 is installed on the base 1. The fixed blade 3 is located above the moving blade 2, and the wire-aligning member 4 is located below the moving blade 2. The output end of an external driving mechanism (not shown in the drawings) is connected to the lower end of the rotating shaft 6. The external driving mechanism drives the rotating shaft 6 to rotate, thereby driving the moving blade 2 to swing to cut the thread.
[0032] Referring to Figures 6 - 8 , the surface of the moving blade 2 away from the fixed blade 3 is the back surface 21. The wire-pressing member 5 includes a body 51. The body 51 is fixed to the back surface 21 of the moving blade 2. The body 51 is provided with wire-pressing hairs 52. The wire-pressing member 5 can also be designed as a sponge block or a rubber block.
[0033] Referring to Figure 9 and Figure 10, a protruding arm 42 is machined on the thread aligning member 4. One end of the protruding arm 42 extends to the lower side of the fixed blade 3. A protruding portion 41 is machined on the protruding arm 42. The protruding portion 41 is located below the fixed blade 3. A thread aligning groove 411 for the bobbin thread of the embroidery machine to pass through is machined on the protruding portion 41. The bottom of the thread aligning groove 411 extends to the protruding arm 42. When the moving blade 2 is in the state of cutting the thread, as Figure 1 and Figure 2 shown, at this time, the moving blade 2 and the fixed blade 3 intersect with each other. The surface thread and the bobbin thread of the embroidery machine are cut off. At the same time, the moving blade 2 and the fixed blade 3 clamp the bobbin thread, while the surface thread is pulled up and drawn away. The pressing member 5 cooperates with the protruding portion 41. The pressing member 5 covers the notch of the thread aligning groove 411. As Figure 4 and Figure 5 shown, at this time, the pressing member 5 presses the bobbin thread, and the bobbin thread is limited in the thread aligning groove 411, realizing the positioning of the bobbin thread and preventing the bobbin thread from running out of position.
[0034] The thread cutting mechanism of the embroidery machine of the present utility model has a novel and unique structure. When the thread cutting mechanism cuts the surface thread and the bobbin thread, the pressing member on the moving blade cooperates with the thread aligning member to realize the positioning of the bobbin thread and prevent the bobbin thread from running out of position. Compared with the thread cutting mechanisms of the prior art, the situation that the bobbin thread is locked too tightly or cannot be locked tightly will not occur. Therefore, the thread cutting mechanism of the present utility model positions the bobbin thread more stably and reliably, and can more effectively ensure the embroidery work of the embroidery machine.
[0035] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A thread cutting mechanism for an embroidery machine, comprising a base (1), a moving blade (2) and a fixed blade (3), characterized in that, A wire pressing member (5) is provided on the moving blade (2), and a wire fixing member (4) is provided on the base (1). When the moving blade (2) is in the state of cutting the thread, the wire pressing member (5) cooperates with the wire fixing member (4), and the wire pressing member (5) positions the bobbin thread of the embroidery machine between the wire fixing member (4) and the wire pressing member (5).
2. The wire cutting mechanism according to claim 1, characterized in that The fixed blade (3) is located on one side of the moving blade (2), the wire fixing member (4) is located on the other side of the moving blade (2), the side of the moving blade (2) away from the fixed blade (3) is the back surface (21), and the wire pressing member (5) is arranged at the back surface (21) of the moving blade (2).
3. The wire cutting mechanism according to claim 1 or 2, characterized in that, The wire fixing member (4) includes a body (51), the body (51) is fixed to the moving blade (2), and wire pressing hairs (52) are provided on the body (51). When the moving blade (2) is in the state of cutting the thread, the wire pressing hairs (52) cooperate with the wire fixing member (4), and the wire pressing hairs (52) position the bobbin thread of the embroidery machine at the wire fixing member (4).
4. The wire cutting mechanism according to claim 1 or 2, characterized in that, The wire fixing member (4) is a sponge block or a rubber block.
5. The wire cutting mechanism according to claim 1 or 2, characterized in that, A wire fixing groove (411) for the bobbin thread of the embroidery machine to pass through is provided on the wire fixing member (4). When the moving blade (2) is in the state of cutting the thread, the wire pressing member (5) covers the notch of the wire fixing groove (411), so as to limit the bobbin thread of the embroidery machine in the wire fixing groove (411).
6. The wire cutting mechanism according to claim 5, characterized in that, The wire fixing member (4) is provided with an extending arm (42), a convex portion (41) is provided on the extending arm (42), and the wire fixing groove (411) is provided on the convex portion (41).
7. The wire cutting mechanism according to claim 6, wherein The bottom of the wire fixing groove (411) extends to the extending arm (42).
8. The wire cutting mechanism according to claim 1, wherein The fixed blade (3) is fixed to the base (1), a rotatable rotating shaft (6) is provided on the base (1), the moving blade (2) is installed on the rotating shaft (6), the output end of an external driving mechanism is connected to the rotating shaft (6), and the external driving mechanism drives the rotating shaft (6) to rotate, so as to drive the moving blade (2) to swing to cut the thread.