Take-up shifting fork for thread winding of thread shuttle

Abstract

The utility model discloses a thread take-up shifting fork for thread shuttle winding, which comprises a shifting fork, a shifting fork support and a linear driving mechanism arranged on the shifting fork support, and a guide groove is arranged on the linear driving mechanism. One end of the shifting fork is rotationally connected with the shifting fork support, the other end of the shifting fork is used for taking up threads, the shifting fork is connected with the linear driving mechanism and located in the guide groove, and the linear reciprocating motion of the linear driving mechanism can drive the shifting fork to swing along the guide groove. The shifting fork is effectively prevented from deviating during movement, the guide groove is simple in structure, and the movement stability of the take-up shifting fork is ensured with low cost.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and in particular to a thread take-up fork for winding yarn on a shuttle. Background Technology

[0002] The length of thread on the bobbin of a sewing machine is fixed. Therefore, the bobbin must be replaced after a set length of sewing is completed. Previously, this replacement process had to be done manually by the operator, which was inefficient. To improve work efficiency, technicians developed an automatic bobbin-changing and thread-winding machine, aiming to replace the complicated steps of manually changing the bobbin and winding the thread.

[0003] During the thread winding process, the thread shuttle must be guided through the thread hole in a thread winding machine. To facilitate this guiding, thread winding machines are usually equipped with a thread-taking fork that works in conjunction with the winding knife. However, existing thread-taking forks have certain shortcomings in terms of movement stability. To improve their movement stability, adding a complex guiding mechanism would significantly increase costs and require more space. Summary of the Invention

[0004] This invention provides a take-up fork for winding thread on a shuttle, in order to overcome the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A take-up fork for winding thread on a shuttle includes: a fork, a fork bracket, and a linear drive mechanism disposed on the fork bracket, wherein the linear drive mechanism is provided with a guide groove.

[0007] One end of the shift fork is rotatably connected to the shift fork bracket, and the other end of the shift fork is used for picking up the line. The shift fork is connected to the linear drive mechanism and is located in the guide groove. The linear reciprocating motion of the linear drive mechanism can drive the shift fork to swing along the guide groove.

[0008] Furthermore, the shift fork is provided with an elongated hole that extends along the length of the shift fork, and the linear drive mechanism is connected to the shift fork located in the guide groove via a first pin.

[0009] Furthermore, the shift fork includes a transmission rod and a line-taking portion fixed on the transmission rod. The elongated hole is provided on the transmission rod, and the end of the transmission rod away from the line-taking portion is rotatably connected to the shift fork bracket via a second pin.

[0010] Furthermore, the thread take-up section is inclined on the transmission rod, and the thread take-up section is inclined to the side away from the winding knife of the winding machine.

[0011] Furthermore, the linear drive mechanism includes a connecting block and a drive mechanism, the guide groove is disposed on the connecting block, and the drive mechanism is capable of driving the connecting block to reciprocate linearly.

[0012] Furthermore, the driving mechanism is a shift fork cylinder, the cylinder body of which is fixed on the shift fork bracket, and the piston rod of which is threadedly connected to the connecting block.

[0013] Furthermore, the shift fork bracket is provided with at least two bolt holes, and the shift fork bracket is fixed to the winding machine by fixing bolts provided in the bolt holes.

[0014] Furthermore, it also includes a flat washer located between the head of the fixing bolt and the shift fork bracket.

[0015] Furthermore, both the first and second pins are provided with retaining rings. The retaining ring on the first pin is used to prevent the first pin from separating from the linear drive mechanism, and the retaining ring on the second pin is used to prevent the second pin from separating from the shift fork bracket.

[0016] Beneficial effects: The thread take-up fork disclosed in this utility model, by setting a guide groove on the linear drive mechanism, achieves constraint on the swing of the fork, effectively avoiding deviation during the movement of the fork. The guide groove has a simple structure and ensures the stability of the thread take-up fork movement at a low cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This utility model discloses a schematic diagram of a take-up fork for winding thread on a shuttle. Figure 1 ;

[0019] Figure 2 This utility model discloses a schematic diagram of a take-up fork for winding thread on a shuttle. Figure 2 ;

[0020] Figure 3 This is a rear view of a take-up fork for winding thread using a shuttle disclosed in this utility model;

[0021] Figure 4 This is a left view of a take-up fork for winding thread on a shuttle disclosed in this utility model;

[0022] Figure 5 This is a schematic diagram showing the positions of the take-up fork and the winding knife for winding a bobbin, as disclosed in this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of a shuttle disclosed in this utility model;

[0024] Figure 7 This is a schematic diagram of the bobbin sleeve of a shuttle equipped with a thread guide spring, as disclosed in this utility model.

[0025] In the picture:

[0026] 71. Shutter sleeve; 715. Thread guide hole; 715a. First section; 715b. Second section; 716. Thread pull groove; 720. Thread guide spring;

[0027] 121. Thread winding knife;

[0028] 131. Shift fork; 1311. Drive rod; 1312. Line take-up section;

[0029] 132. Shift fork bracket;

[0030] 133. Cylinder for shift fork;

[0031] 134. First pin;

[0032] 135. Connecting block; 1351. Guide groove;

[0033] 136. Fixing bolts;

[0034] 137. Flat washer;

[0035] 138. Second pin;

[0036] 139. Elongated hole;

[0037] 1310. Snap ring. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] This embodiment provides a take-up fork for winding thread on a shuttle, such as... Figures 1 to 4As shown in the figure, it includes a shift fork 131, a shift fork bracket 132, and a linear drive mechanism provided on the shift fork bracket 132. A guide groove 1351 is provided on the linear drive mechanism.

[0040] One end of the shift fork 131 is rotatably connected to the shift fork bracket 132. The other end of the shift fork 131 is used for thread picking. The shift fork 131 is connected to the linear drive mechanism and is located within the guide groove 1351. The linear reciprocating motion of the linear drive mechanism can drive the shift fork 131 to swing along the guide groove 1351.

[0041] A thread picking shift fork for bobbin winding disclosed in this embodiment realizes the constraint on the swing of the shift fork 131 by providing a guide groove 1351 on the linear drive mechanism, effectively avoiding the deviation of the shift fork 131 during movement. The structure of the guide groove 1351 is simple, ensuring the stability of the movement of the thread picking shift fork at a low cost.

[0042] In a specific embodiment, as Figure 1 shown, a long slot 139 is provided on the shift fork 131. The long slot 139 extends along the length direction of the shift fork 131. The linear drive mechanism is connected to the shift fork 131 located within the guide groove 1351 through a first pin 134. The long slot 139 and the guide groove 1351 enable the linear reciprocating motion of the linear drive mechanism to be converted into the swing of the shift fork 131 along the guide groove 1351.

[0043] In a specific embodiment, as Figure 3 shown, the shift fork 131 includes a transmission rod 1311 and a thread picking portion 1312 fixed on the transmission rod 1311. In this embodiment, the thread picking portion 1312 is in a "C" shape. When the sewing thread is located within the "C" shape, it can be picked by the shift fork 131. The long slot 139 is provided on the transmission rod 1311. One end of the transmission rod 1311 away from the thread picking portion 1312 is rotatably connected to the shift fork bracket 132 through a second pin 138.

[0044] In a specific embodiment, as Figures 1 to 4 shown, the thread picking portion 1312 is inclined on the transmission rod 1311. As Figure 5 shown, the thread picking portion 1312 is inclined towards the side away from the winding knife 121 of the winding machine, facilitating the overall layout of the winding machine. In this embodiment, the transmission rod 1311 and the thread picking portion 1312 are integrally formed.

[0045] In a specific embodiment, as Figure 1 and Figure 2 shown, the linear drive mechanism includes a coupling block 135 and a drive mechanism. The guide groove 1351 is provided on the coupling block 135. The drive mechanism can drive the coupling block 135 to perform linear reciprocating motion.

[0046] In a specific embodiment, such as Figures 1 to 4 As shown, the driving mechanism is a shift fork cylinder 133. In this embodiment, the shift fork cylinder 133 is a threaded cylinder. The cylinder body of the shift fork cylinder 133 is fixed to the shift fork bracket 132 by threads, and the piston rod of the shift fork cylinder 133 is threadedly connected to the connecting block 135.

[0047] In a specific embodiment, the shift fork bracket 132 is provided with at least two bolt holes. The shift fork bracket 132 is fixed to the winding machine by fixing bolts 136 provided in the bolt holes. The shift fork bracket 132 is prevented from rotating relative to the winding machine by positioning at two or more points, thus ensuring positioning accuracy.

[0048] In a specific embodiment, such as Figure 1 As shown, it also includes a flat washer 137, which is located between the head of the fixing bolt 136 and the shift fork bracket 132 to increase the contact area and reduce the pressure.

[0049] In a specific embodiment, such as Figure 4 As shown, both the first pin 134 and the second pin 138 are provided with snap rings 1310. The snap ring 1310 on the first pin 134 is used to prevent the first pin 134 from separating from the linear drive mechanism, and the snap ring 1310 on the second pin 138 is used to prevent the second pin 138 from separating from the shift fork bracket 132.

[0050] Figure 6 and Figure 7 Two types of bobbin cases 71 commonly used in thread shuttles are disclosed (one type is not equipped with a thread guide spring 720, and the other type is equipped with a thread guide spring 720). The sewing thread enters the first section 715a of the thread guide hole 715 through the thread pull groove 716 of the bobbin case 71 under the drive of the thread winding knife. At this time, the shift fork is extended and retracted by the cylinder 133, which drives the thread take-up part 1312 to swing through the transmission rod 1311. The thread take-up part 1312 picks up the sewing thread into the second section 715b.

[0051] This application discloses a take-up fork for winding thread on a shuttle, applicable to the two types of bobbin sleeves 71 mentioned above, such as: C28-high-speed small oblique bobbin sleeve, C29-Sunstar 380 bobbin sleeve, C30-flat-speed bobbin sleeve, C32-large embroidery bobbin sleeve, C34-2010 bobbin sleeve, C40-3 times large bobbin sleeve, C07-761 buttonhole bobbin sleeve, C03-DY-speed bobbin sleeve, C04-246 bobbin sleeve, and other bobbin sleeve models.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A take-up fork for winding thread on a shuttle, characterized in that, include: The fork (131), the fork bracket (132), and the linear drive mechanism disposed on the fork bracket (132), wherein the linear drive mechanism is provided with a guide groove (1351); One end of the fork (131) is rotatably connected to the fork bracket (132), and the other end of the fork (131) is used for picking up the line. The fork (131) is connected to the linear drive mechanism and is located in the guide groove (1351). The linear reciprocating motion of the linear drive mechanism can drive the fork (131) to swing along the guide groove (1351).

2. A thread picker according to claim 1, characterised in that The shift fork (131) is provided with an elongated hole (139) that extends along the length of the shift fork (131). The linear drive mechanism is connected to the shift fork (131) located in the guide groove (1351) via a first pin (134).

3. A take-up fork for winding thread on a shuttle according to claim 2, characterized in that, The shift fork (131) includes a transmission rod (1311) and a line take-up portion (1312) fixed on the transmission rod (1311). The elongated hole (139) is provided on the transmission rod (1311). The end of the transmission rod (1311) away from the line take-up portion (1312) is rotatably connected to the shift fork bracket (132) through a second pin (138).

4. A take-up fork for winding thread on a shuttle according to claim 3, characterized in that, The thread take-up part (1312) is inclined on the transmission rod (1311), and the thread take-up part (1312) is inclined to the side away from the winding knife (121) of the winding machine.

5. A thread picking fork for wire bobbin winding according to claim 1, characterized in that, The linear drive mechanism includes a connecting block (135) and a drive mechanism. The guide groove (1351) is disposed on the connecting block (135), and the drive mechanism can drive the connecting block (135) to reciprocate linearly.

6. A thread picker for a thread shuttle according to claim 5, characterised in that The driving mechanism is a shift fork cylinder (133), the cylinder body of the shift fork cylinder (133) is fixed on the shift fork bracket (132), and the piston rod of the shift fork cylinder (133) is threadedly connected to the connecting block (135).

7. A thread picker for a thread spool according to claim 1, characterized in that The shift fork bracket (132) is provided with at least two bolt holes, and the shift fork bracket (132) is fixed to the winding machine by fixing bolts (136) provided in the bolt holes.

8. A take-up fork for winding thread on a shuttle according to claim 7, characterized in that, It also includes a flat washer (137) located between the head of the fixing bolt (136) and the shift fork bracket (132).

9. A thread picker for a thread shuttle according to claim 3, characterized in that Both the first pin (134) and the second pin (138) are provided with snap rings (1310). The snap ring (1310) on the first pin (134) is used to prevent the first pin (134) from separating from the linear drive mechanism, and the snap ring (1310) on the second pin (138) is used to prevent the second pin (138) from separating from the shift fork bracket (132).

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