Outer shuttle of rotating shuttle of sewing machine

Abstract

The utility model relates to an outer shuttle of a rotating shuttle of a sewing machine. The outer shuttle comprises a shuttle body and a shuttle tip installed on the shuttle body. A plurality of connecting through holes for bolts to penetrate are formed in the side wall of the shuttle body in a penetrating mode, and fixing holes which are in one-to-one correspondence with the connecting through holes and used for threaded connection of the bolts are formed in the shuttle tip. According to the outer shuttle, the shuttle tip is detachably installed on the shuttle body, when the shuttle tip deforms after being used for a long time, the shuttle tip is detached from the shuttle body and then replaced, the whole outer shuttle does not need to be replaced, and the effect of reducing material waste is achieved.

Description

Technical Field

[0001] This application relates to the technical field of sewing machines, and in particular to an outer shuttle of a sewing machine rotary shuttle. Background Art

[0002] With the improvement of living standards, people's demand for clothing is also increasing. To meet the market demand for a large number of clothes, factories mainly use sewing machines to process clothes. Among them, the rotary shuttle of the sewing machine is a main component in the sewing machine.

[0003] In the prior art, the rotary shuttle includes an outer shuttle. When the sewing machine needs to sew clothes, the sewing needle of the sewing machine drives the thread on the sewing needle to move towards the rotary shuttle. The thread forms a loop. While hooking the loop with the tip of the outer shuttle, the loop is enlarged, and the loop is driven to rotate around the bobbin core for one week to form a lockstitch.

[0004] During the long-term use of the outer shuttle, the tip of the shuttle also needs to quickly hook the loop many times. After a long time of use, the tip of the shuttle is prone to deformation, resulting in the inability to hook the loop. Since the tip of the shuttle and the outer shuttle are integrated, the entire outer shuttle needs to be replaced, causing waste of materials. Utility Model Content

[0005] In order to reduce waste of materials, this application provides an outer shuttle of a sewing machine rotary shuttle.

[0006] The outer shuttle of a sewing machine rotary shuttle provided by this application adopts the following technical solutions:

[0007] An outer shuttle of a sewing machine rotary shuttle includes a shuttle body and a shuttle tip installed on the shuttle body; a plurality of connection through holes for bolts to penetrate are formed through the side wall of the shuttle body, and fixing holes corresponding to the connection through holes one by one and for threaded connection of bolts are formed in the shuttle tip.

[0008] By adopting the above technical solution, the shuttle tip can be detachably installed on the shuttle body. When the shuttle tip is deformed after a long time of use, the shuttle tip is removed from the shuttle body and replaced, and it is not necessary to replace the entire outer shuttle, reducing waste of materials.

[0009] Optionally, connection counterbores corresponding to the connection through holes one by one and arranged coaxially are formed on the shuttle body, and the connection counterbores are used for installing the nuts of the bolts.

[0010] By adopting the above technical solution, when the shuttle tip is installed on the shuttle body through bolts, the nuts of the bolts are installed in the connection counterbores, reducing the probability of interference between the nuts and other components of the sewing machine during the installation process of the bolts.

[0011] Optionally, a plurality of positioning rods are fixedly connected to the shuttle body, and positioning holes for inserting the positioning rods are formed through the shuttle tip.

[0012] By adopting the above technical solution, the positioning rods position the shuttle tip during the installation of the shuttle tip on the shuttle body, preventing the shuttle body from being misaligned during the fixing process.

[0013] Optionally, an installation block is fixedly connected to one side of the shuttle tip, and an installation groove for installing the installation block is formed in the shuttle body.

[0014] By adopting the above technical solution, the shuttle tip is installed in the installation groove of the shuttle body through the installation block, making the installation of the shuttle tip on the shuttle body more stable.

[0015] Optionally, a thread-hooking tip is provided on the side of the shuttle tip away from the installation block, and a guiding inclined surface is formed on the side of the thread-hooking tip away from the installation block.

[0016] By adopting the above technical solution, the thread-hooking tip hooks the thread loop, and the thread loop moves away from the thread-hooking tip under the action of the guiding inclined surface, making it more convenient for the shuttle tip to hook the thread loop and reducing the probability of the thread loop detaching from the shuttle tip.

[0017] Optionally, a first inner channel for installing the inner shuttle is formed in the inner side wall of the shuttle body, and a second inner channel corresponding to and communicating with the first inner channel is formed in the shuttle tip.

[0018] By adopting the above technical solution, the inner shuttle is installed in the first inner channel and the second inner channel. Since the first inner channel and the second inner channel correspond to and communicate with each other, the inner shuttle is relatively stable when installed on the outer shuttle and is not likely to fall off.

[0019] Optionally, a thread-releasing groove for restricting the movement of the surface thread is provided on the side of the shuttle tip away from the installation block. The thread-releasing groove is provided on the side of the second inner channel away from the thread-hooking tip; one side of the thread-releasing groove is connected to the guiding inclined surface.

[0020] By adopting the above technical solution, the surface thread enters the thread-releasing groove after moving along the guiding inclined surface, so that the thread-releasing groove limits the surface thread and reduces the probability of the surface thread running around. And since the thread-releasing groove is located on the side of the second inner channel away from the thread-hooking tip, the probability of the surface thread entering the second inner channel and winding around the inner shuttle is prevented.

[0021] Optionally, an oil inlet through hole for allowing lubricating oil to pass through is formed through the shuttle body, and an oil collecting groove for guiding the lubricating oil is formed in the inner side wall of the shuttle body; one end of the oil collecting groove is communicated with the oil inlet through hole, and the other end of the oil collecting groove is communicated with the first inner channel.

[0022] By adopting the above technical solution, the lubricating oil can enter the oil collecting groove through the oil inlet through hole, and enter the first inner channel through the oil collecting groove to lubricate the inner shuttle installed in the first inner channel, making the relative rotation between the inner shuttle and the outer shuttle smoother and reducing the friction between the inner shuttle and the outer shuttle.

[0023] Optionally, a cover plate for covering the oil inlet through hole is installed on the outer side wall of the shuttle body; a cover sunken hole for installing the cover plate is provided on the outer side wall, and the cover plate is connected to the shuttle body through a threaded structure.

[0024] By adopting the above technical solution, the cover plate seals the oil inlet through hole, reducing the probability of lubricating oil leakage from the oil inlet through hole, and since the cover plate is threadedly installed in the cover sunken hole, the disassembly and assembly of the cover plate are relatively convenient.

[0025] Optionally, the shuttle body includes a connecting portion for installing the inner shuttle and a driving portion installed at one end of the connecting portion and for installing the inner shuttle frame. The driving portion is provided with an axial hole for installing the inner shuttle frame through it, and an oil outlet hole is provided on one side of the driving portion close to the connecting portion. The oil outlet hole is used to communicate the axial hole and the oil collecting groove.

[0026] By adopting the above technical solution, the lubricating oil enters the axial hole through the oil outlet hole to lubricate the inside of the shuttle body, reducing the phenomenon of jamming between the shuttle body and the inner shuttle frame.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The shuttle tip can be detachably installed on the shuttle body. When the shuttle tip is deformed after a long use time, the shuttle tip can be disassembled from the shuttle body and replaced, without the need to replace the entire outer shuttle, reducing material waste;

[0029] 2. The positioning rod positions the shuttle tip during the installation of the shuttle tip on the shuttle body, preventing the shuttle body from being misaligned during the fixing process;

[0030] 3. The lubricating oil can enter the oil collecting groove through the oil inlet through hole, and enter the first inner channel through the oil collecting groove to lubricate the inner shuttle installed in the first inner channel, making the relative rotation between the inner shuttle and the outer shuttle smoother and reducing the friction between the inner shuttle and the outer shuttle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of an outer shuttle of a sewing machine rotating shuttle in an embodiment of the present application.

[0032] Figure 2 It is a cross-sectional view of the shuttle body and the cover plate in an embodiment of the present application.

[0033] Figure 3 It is a schematic structural diagram of the shuttle body in the embodiment of the present application.

[0034] Figure 4 It is a schematic structural diagram of the shuttle body from another perspective in the embodiment of the present application.

[0035] Figure 5 It is a schematic structural diagram of the cover plate in the embodiment of the present application.

[0036] Figure 6 It is a schematic structural diagram of the shuttle tip in the embodiment of the present application.

[0037] Explanation of reference numerals: 1. Shuttle body; 11. Driving part; 111. Shaft hole; 112. Mounting hole; 113. Oil outlet hole; 114. Oil outlet counterbore; 12. Connecting part; 121. Inner shuttle mounting cavity; 122. Mounting opening; 123. Sewing opening; 124. First inner channel; 125. Oil inlet through hole; 126. Oil collecting groove; 127. Covering counterbore; 13. Fixing part; 131. Positioning rod; 132. Connecting through hole; 133. Connecting counterbore; 134. Mounting groove; 2. Shuttle tip; 21. Thread hooking tip; 22. Mounting block; 23. Guide inclined surface; 24. Thread clearance groove; 25. Positioning hole; 26. Fixing hole; 27. Second inner channel; 3. Cover plate; 31. Rotating groove. Detailed implementation manners

[0038] The following will Figures 1-6 make a further detailed description of the present application in conjunction with the attached

[0039] The embodiment of the present application discloses an outer shuttle of a sewing machine rotating shuttle.

[0040] Referring to Figure 1 and Figure 2 , an outer shuttle of a sewing machine rotating shuttle includes a shuttle body 1, a shuttle tip 2 mounted on the shuttle body 1, and a cover plate 3 mounted on the shuttle body 1. In this embodiment, the shuttle tip 2 is mounted on the side wall of the shuttle body 1.

[0041] Referring to Figure 1 , the shuttle body 1 includes a driving part 11 and a connecting part 12. In this embodiment, the driving part 11 and the connecting part 12 are of an integral structure, and the connecting part 12 is connected to one side of the driving part 11.

[0042] Referring to Figure 2The driving part 11 is a columnar structure as a whole. The driving part 11 is used for the installation of the inner shuttle frame and for the inner shuttle frame to drive the shuttle body 1 to rotate. An axial hole 111 is provided through the driving part 11 for the fixed installation of the inner shuttle frame. A plurality of mounting holes 112 for bolt installation are provided around the driving part 11. In this embodiment, three mounting holes 112 are provided around the driving part 11 and one end of the mounting hole 112 away from the outer wall of the driving part 11 is connected to the axial hole 111. The bolt is installed on the driving part 11 through the mounting hole 112 and is used to fix the inner shuttle frame installed in the axial hole 111. One end of the axial hole 111 is connected to the connecting part 12.

[0043] Reference Figure 2 The driving part 11 is provided with an oil outlet hole 113 for introducing lubricating oil into the shuttle body 1 on a side close to the driving part 11. In this embodiment, the oil outlet hole 113 is provided on a side of the driving part 11 close to the connecting part 12. The driving part 11 is provided with an oil outlet counterbore 114 coaxially arranged with the shaft hole 111 on a side close to the connecting part 12. The oil outlet hole 113 is connected to the oil outlet counterbore 114 and is used to transport the lubricating oil to the oil outlet counterbore 114.

[0044] Reference Figure 1 The connecting portion 12 is a hollow cylindrical structure as a whole. The connecting portion 12 is provided with an inner shuttle installation cavity 121 for installing the inner shuttle and an installation opening 122 for the inner shuttle to enter the inner shuttle installation cavity 121. In this embodiment, the connecting portion 12 is provided with a sewing opening 123 for the needle of the sewing machine to pass through.

[0045] Reference Figure 3 and Figure 4 , the connecting part 12 is connected to a fixing part 13 for installing the shuttle tip 2 on one side of the sewing opening 123. A plurality of positioning rods 131 for positioning the shuttle tip 2 are fixedly connected to the inner side wall of the fixing part 13. A plurality of connecting through holes 132 for bolts to pass through are provided through the fixing part 13. In this embodiment, two positioning rods 131 are fixedly connected to the fixing part 13, and two connecting through holes 132 are provided through the fixing part 13. In order to prevent the nut of the bolt from interfering with the sewing machine when the shuttle body 1 rotates, a connecting countersunk hole 133 corresponding to the connecting through hole 132 and arranged coaxially is provided on the outer side wall of the fixing part 13, and the connecting countersunk hole 133 is used for installing the nut of the bolt. The connecting part 12 is provided with a mounting groove 134 for installing the shuttle tip 2 on the side away from the sewing opening 123.

[0046] Reference Figure 3, a first inner channel 124 for installing the inner shuttle is formed in the connecting portion 12. In this embodiment, the first inner channel 124 is wound around the inner side wall of the connecting portion 12, and the first inner channel 124 is parallel to the inner bottom surface of the connecting portion 12. The two positioning rods 131 are respectively located on both sides of the first inner channel 124, and the two connecting through holes 132 are also respectively located on both sides of the first inner channel 124.

[0047] Refer to Figure 2 , an oil inlet through hole 125 for delivering external lubricating oil into the inner shuttle installation cavity 121 is formed on one side of the connecting portion 12 close to the driving portion 11. An oil collecting groove 126 for guiding the lubricating oil is formed on the inner side wall of the connecting portion 12. In this embodiment, one end of the oil collecting groove 126 communicates with the oil inlet through hole 125, and the other end of the oil collecting groove 126 communicates with the first inner channel 124 for introducing the lubricating oil into the first inner channel 124 to lubricate the inner shuttle installed in the first inner channel 124. One end of the oil outlet hole 113 far from the shaft hole 111 communicates with the oil collecting groove 126. A cover sinking hole 127 coaxial with the oil outlet hole 113 and for threadedly installing the cover plate 3 is formed on the outer side wall of the connecting portion 12, and a thread structure is formed on the side wall of the cover sinking hole 127.

[0048] Refer to Figure 2 and Figure 5 , the cover plate 3 is in a circular plate shape and is used to cover the oil outlet hole 113 of the connecting portion 12. In this embodiment, a thread structure is formed on the side wall of the cover plate 3, and it is threadedly connected in the cover sinking hole 127 of the connecting portion 12. A rotation groove 31 for an operator to rotate the cover plate 3 with a screwdriver is formed on one side of the cover plate 3 far from the connecting portion 12.

[0049] Refer to Figure 6 , the shuttle tip 2 is used to hook the thread loop formed by the upper thread on the sewing needle. The shuttle tip 2 is in an overall triangular sheet structure. One end of the shuttle tip 2 is connected with a thread hooking tip 21 for hooking the upper thread, and the other end of the shuttle tip 2 is fixedly connected with a mounting block 22 for mounting in the mounting groove 134. In this embodiment, a guiding inclined surface 23 and a thread relief groove 24 for restricting the movement of the upper thread are formed on one side of the shuttle tip 2 close to the thread hooking tip 21. The side wall of the thread relief groove 24 close to the thread hooking tip 21 is connected to the guiding inclined surface 23.

[0050] Refer to Figure 4 and Figure 6, two positioning holes 25 corresponding to the positioning rods 131 one by one and used for positioning and installing the positioning rods 131 are penetrated through the shuttle tip 2, and two fixing holes 26 corresponding to the connecting through holes 132 one by one and used for screw connection of bolts are provided. A second inner channel 27 for installing the inner shuttle is provided on the inner side wall of the shuttle tip 2. In this embodiment, the second inner channel 27 corresponds to the first inner channel 124 one by one and is communicated with the first inner channel 124. The two positioning holes 25 are respectively located on both sides of the second inner channel 27, and the two fixing holes 26 are respectively located on both sides of the second inner channel 27.

[0051] The implementation principle of the outer shuttle of a sewing machine rotating shuttle in an embodiment of the present application is as follows:

[0052] 1. The shuttle tip 2 is initially installed on the shuttle body 1 by the cooperation of the positioning rod 131 and the positioning hole 25, and the mounting block 22 on the shuttle tip 2 is installed in the mounting groove 134 of the shuttle body 1;

[0053] 2. The shuttle tip 2 is fixedly connected to the shuttle body 1 by bolts sequentially connected to the connecting through holes 132 and the fixing holes 26;

[0054] 3. Lubricating oil is added into the shuttle body 1 through the oil inlet through hole 125, and the lubricating oil enters the first inner channel 124 and the second inner channel 27 through the oil collecting groove 126 to lubricate the inner shuttle.

[0055] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An outer shuttle of a rotary hook of a sewing machine, characterized in that: The shuttle body (1) comprises a shuttle body (1) and a shuttle tip (2) mounted on the shuttle body (1); a plurality of connecting through holes (132) for bolts to pass through are formed through the side wall of the shuttle body (1); and the shuttle tip (2) is provided with fixing holes (26) corresponding to the connecting through holes (132) and for bolts to be threadedly connected.

2. The outer hook of a sewing machine hook according to claim 1, characterized in that: The shuttle body (1) is provided with a connecting countersunk hole (133) which corresponds to the connecting through hole (132) one by one and is coaxially arranged. The connecting countersunk hole (133) is used for installing a nut of a bolt.

3. The outer hook of a sewing machine hook according to claim 1, characterized in that: The shuttle body (1) is fixedly connected to a plurality of positioning rods (131), and the shuttle tip (2) is penetrated by a positioning hole (25) for the positioning rods (131) to be inserted.

4. The outer hook of a sewing machine hook according to claim 1, characterized in that: A mounting block (22) is fixedly connected to one side of the shuttle tip (2), and a mounting groove (134) for mounting the mounting block (22) is provided on the shuttle body (1).

5. The outer hook of a rotary hook of a sewing machine according to claim 4, characterized in that: A thread hooking tip (21) is provided on the side of the shuttle tip (2) away from the mounting block (22), and a guiding inclined surface (23) is formed on the side of the thread hooking tip (21) away from the mounting block (22).

6. The outer hook of a sewing machine hook according to claim 5, characterized in that: The inner side wall of the shuttle body (1) is provided with a first inner channel (124) for installing the inner shuttle, and the shuttle tip (2) is provided with a second inner channel (27) corresponding to the first inner channel (124) and communicating with the first inner channel (124).

7. The outer hook of a sewing machine hook according to claim 6, characterized in that: A thread letting groove (24) for limiting the movement of the upper thread is provided on the side of the shuttle tip (2) away from the mounting block (22); the thread letting groove (24) is provided on the side of the second inner channel (27) away from the thread hooking tip (21); one side of the thread letting groove (24) is connected to the guiding inclined surface (23).

8. The outer hook of a sewing machine hook according to claim 6, characterized in that: The shuttle body (1) is provided with an oil inlet through hole (125) for lubricating oil to pass through, and the inner side wall of the shuttle body (1) is provided with an oil collecting groove (126) for guiding the lubricating oil; one end of the oil collecting groove (126) is communicated with the oil inlet through hole (125), and the other end of the oil collecting groove (126) is communicated with the first inner channel (124).

9. The outer hook of a rotary hook of a sewing machine according to claim 8, characterized in that: A covering plate (3) for covering the oil inlet through hole (125) is installed on the outer wall of the shuttle body (1); a covering countersunk hole (127) for installing the covering plate (3) is opened on the outer wall, and the covering plate (3) is connected to the shuttle body (1) through a threaded structure.

10. The outer hook of a sewing machine hook according to claim 8, characterized in that: The shuttle body (1) comprises a connecting portion (12) for mounting an inner shuttle and a driving portion (11) mounted at one end of the connecting portion (12) and for mounting an inner shuttle frame, the driving portion (11) being provided with an axial hole (111) for mounting the inner shuttle frame, and an oil outlet hole (113) being provided on a side of the driving portion (11) close to the connecting portion (12), the oil outlet hole (113) being used to connect the axial hole (111) and the oil collecting tank (126).

Images