Rotating shuttle shaft sleeve, rotating shuttle cooling and lubricating system and sewing machine
By designing a spiral groove on the shaft sleeve of the sewing machine to increase the contact area between the lubricating medium and the sleeve, the problem of temperature increase caused by the lack of cooling mechanism in traditional spiral shuttles is solved, the strength and durability of the sewing thread are improved, and the wire breakage is reduced.
Patent Information
- Application Number
- CN202421976164.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-08-15
AI Technical Summary
Due to the lack of an effective cooling mechanism in traditional sewing machines, the temperature rises after long working hours, affecting the strength and durability of the sewing thread, which may lead to thread breakage during the sewing process.
A rotary shuttle bushing is designed, including a nested rotary shuttle jacket and a rotary shuttle inner sleeve. The outer sleeve is equipped with an inlet hole, and a spiral groove is provided on the outside of the inner sleeve. The spiral groove is connected to the inlet hole, which increases the contact area between the lubricating medium and the sleeve and improves heat exchange efficiency.
Through the design of the spiral groove on the inner sleeve of the rotary shuttle, the heat exchange efficiency is improved, the temperature of the rotary shuttle is reduced, the problem of decreased sewing thread strength and durability is reduced, and the thread breakage phenomenon during sewing is reduced.
Smart Images
Figure CN222811081U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sewing machines, and in particular to a rotary hook sleeve, a rotary hook cooling and lubrication system, and a sewing machine. Background Art
[0002] The rotary hook is a key component of a sewing machine, and its performance directly affects the sewing quality and the stability of the machine. The lubrication of the rotary hook in traditional sewing machines mainly relies on the method of oil absorption through the hollow shaft.
[0003] In practice, the inventors found that the existing rotary hook has the following defects: Due to the lack of an effective cooling mechanism, the temperature of the rotary hook rises after a long period of operation, which not only affects the strength and durability of the sewing thread, but also may cause the thread to break during the sewing process. Utility Model Content
[0004] The purpose of the present application is to provide a rotary hook sleeve, which increases the contact area between the lubricating medium and the sleeve through the spiral groove design on the inner sleeve of the rotary hook, improves the heat exchange efficiency, thereby solving the problem that the traditional rotary hook affects the strength and durability of the sewing thread due to the increase in temperature after long-term operation, and reduces the phenomenon of thread breakage during sewing. Another purpose of the present application is to provide a rotary hook cooling and lubrication system and a sewing machine.
[0005] To achieve the above-mentioned purpose, the present application provides a rotary hook sleeve, which is arranged on a rotary hook shaft, and the rotary hook sleeve includes a rotary hook outer sleeve and a rotary hook inner sleeve which are nested. The rotary hook outer sleeve is provided with an inlet hole, and the rotary hook inner sleeve is located inside the rotary hook outer sleeve. The outer side of the rotary hook inner sleeve is provided with a spiral groove, and the spiral groove is communicated with the inlet hole. The spiral groove is provided with a rotary hook oil inlet hole leading to the inner side of the rotary hook inner sleeve.
[0006] In some embodiments, the rotary hook shaft sleeve also includes a rotary hook oil quantity adjusting member; the rotary hook outer sleeve is provided with a rotary hook oil quantity adjusting hole, the rotary hook oil quantity adjusting member is installed in the rotary hook oil quantity adjusting hole, the rotary hook oil quantity adjusting member is inserted into the rotary hook oil inlet hole, and the gap between the rotary hook oil quantity adjusting member and the rotary hook oil inlet hole is adjustable.
[0007] In some embodiments, the rotary hook outer sleeve and the rotary hook inner sleeve are interference fit; and / or,
[0008] The head of the rotary hook oil quantity adjusting member penetrates into the rotary hook oil inlet hole, the head has a taper in the axial direction of the rotary hook oil quantity adjusting member, and the rotary hook oil quantity adjusting member is threadedly matched with the rotary hook oil quantity adjusting hole; and / or,
[0009] The rotary hook outer sleeve and the rotary hook inner sleeve are provided with positioning grooves; and / or,
[0010] The material of the rotary hook outer sleeve and the rotary hook inner sleeve is copper.
[0011] In some embodiments, the rotary hook housing is further provided with an outlet hole, the spiral groove is communicated with the outlet hole, and the position where the spiral groove communicates with the inlet hole is located above the position where the spiral groove communicates with the outlet hole; or,
[0012] The hook outer shell is also provided with an oil guide groove, the spiral groove is provided with an oil outlet groove, and the oil outlet groove is communicated with the oil guide groove to form an oil injection port.
[0013] The present application also provides a rotary hook cooling and lubrication system, comprising a rotary hook module, a filter module and a drive module, wherein the rotary hook module comprises the above-mentioned rotary hook sleeve; the rotary hook module, the filter module and the drive module are located in a rotary hook lubrication oil circuit.
[0014] In some embodiments, the rotary hook module includes a shuttle frame provided with a first oil pipe nozzle and a second oil pipe nozzle, the first oil pipe nozzle is communicated with the inlet hole of the rotary hook housing, the second oil pipe nozzle is communicated with the outlet hole of the rotary hook housing, the rotary hook lubricating oil circuit is a closed cycle, the oil inlet route is the filter module, the drive module, the rotary hook module, and the oil return route is the rotary hook module, the drive module, and the filter module; or,
[0015] The rotary shuttle module includes a shuttle frame provided with a first oil pipe nozzle and an oil return port, the first oil pipe nozzle is communicated with the inlet hole of the rotary shuttle housing, the oil spray port of the rotary shuttle housing is used to spray oil toward the gear of the rotary shuttle module, and the oil return port is used to guide the lubricating medium in the rotary shuttle module to the oil pan. The rotary shuttle lubricating oil circuit is an open cycle, and its oil inlet route is the oil pan, the filter module, the drive module, and the rotary shuttle module, and the oil return route is the rotary shuttle module and the oil pan.
[0016] In some embodiments, the rotary shuttle cooling and lubrication system also includes a cooling module; the rotary shuttle module is connected to the cooling module oil circuit, the cooling module is connected to the filter module oil circuit, the filter module is connected to the drive module oil circuit, and the drive module is connected to the rotary shuttle module oil circuit.
[0017] In some embodiments, the driving module includes a lower shaft and a pump assembly disposed on the lower shaft, and the pump assembly is used to drive the lubricating medium in the rotary hook lubricating oil circuit to flow under the drive of the lower shaft;
[0018] The rotary hook cooling and lubrication system further comprises a fan blade, wherein the fan blade is mounted on a pulley on the lower shaft, and the fan blade is arranged toward the cooling module; and / or,
[0019] The cooling module is provided with cooling fins; and / or,
[0020] The filter module includes a transparent shell, the transparent shell is provided with an addition port communicating with the interior thereof, a filter net is provided inside the transparent shell, the interior of the transparent shell is divided into a first area and a second area by the filter net, the transparent shell is provided with a filter inlet and a filter outlet, the filter inlet is communicated with the first area, and the filter outlet is communicated with the second area.
[0021] In some embodiments, the pump assembly comprises a diaphragm pump driven by the lower shaft; and / or,
[0022] The pump assembly includes a plunger pump, and the diaphragm pump is driven by the lower shaft.
[0023] The present application also provides a sewing machine, comprising the above-mentioned rotary hook cooling and lubrication system.
[0024] Compared with the above-mentioned background technology, the rotary hook sleeve provided in the present application is arranged on the rotary hook shaft, and the rotary hook sleeve includes a rotary hook outer sleeve and a rotary hook inner sleeve which are nested. The rotary hook outer sleeve is provided with an inlet hole, and the rotary hook inner sleeve is located inside the rotary hook outer sleeve. The outer side of the rotary hook inner sleeve is provided with a spiral groove, which is communicated with the inlet hole, and the spiral groove is provided with a rotary hook oil inlet hole leading to the inner side of the rotary hook inner sleeve.
[0025] In traditional sewing machines, the rotary hook is a key component. Due to the lack of an effective cooling mechanism, the temperature of the rotary hook rises after working for a long time, which not only affects the strength and durability of the sewing thread, but also may cause thread breakage during the sewing process, thereby reducing the working efficiency and product quality of the sewing machine. In response to this technical problem, the rotary hook sleeve provided in this application adopts an innovative design. The rotary hook sleeve consists of a nested rotary hook outer sleeve and a rotary hook inner sleeve. The outer sleeve is provided with an inlet hole, and the inner sleeve is located inside the outer sleeve. The spiral groove design on the outside is the core of this technical solution. The spiral groove is connected to the inlet hole, ensuring that the lubricating medium can flow smoothly into and fill the spiral groove. At the same time, the spiral groove is also provided with a rotary hook oil inlet hole leading to the inner side of the rotary hook inner sleeve, so that the lubricating medium can directly enter the key parts of the rotary hook.
[0026] This design significantly increases the contact area between the lubricating medium and the inner sleeve of the rotary hook, thereby improving the heat exchange efficiency. The heat generated during the operation of the rotary hook can be quickly transferred to the spiral groove through the lubricating medium, and then the heat is taken away by the flow of the lubricating medium, effectively reducing the temperature of the rotary hook. Due to the design of the spiral groove, the rotary hook can be kept cool and lubricated even under high load and long-term working conditions, reducing the problem of reduced strength and durability of the sewing thread caused by excessive temperature.
[0027] Combined with the above structure and process description, it can be seen that the rotary shuttle sleeve has at least the following beneficial effects: the rotary shuttle sleeve increases the contact area between the lubricating medium and the sleeve through the spiral groove design on the inner sleeve of the rotary shuttle, thereby improving the heat exchange efficiency, thereby solving the problem that the traditional rotary shuttle affects the strength and durability of the sewing thread due to the increase in temperature after working for a long time, and reducing the phenomenon of thread breakage during sewing. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0029] Figure 1 A schematic diagram of the installation of the rotary hook sleeve in the rotary hook module provided in the embodiment of the present application;
[0030] Figure 2 A schematic diagram of a disassembled hook sleeve provided in one embodiment of the present application;
[0031] Figure 3 for Figure 2 A schematic cross-sectional view of the middle hook sleeve at the inlet position;
[0032] Figure 4 for Figure 2 A schematic cross-sectional view of the middle hook sleeve at the exit position;
[0033] Figure 5 A schematic diagram of a disassembled hook sleeve provided in another embodiment of the present application;
[0034] Figure 6 for Figure 5 A schematic cross-sectional view of the middle hook sleeve at the exit position;
[0035] Figure 7 A schematic diagram of the oil circuit of a rotary hook cooling and lubrication system provided in one embodiment of the present application;
[0036] Figure 8 for Figure 7 Schematic diagram of the disassembly of the cooling and lubrication system of the middle hook;
[0037] Fig. 9 for Figure 7 Installation diagram of the central hook cooling and lubrication system in a sewing machine;
[0038] Fig.10 A schematic diagram of the oil circuit of a rotary hook cooling and lubrication system provided in another embodiment of the present application;
[0039] Fig.11 for Fig.10 Installation diagram of the central hook cooling and lubrication system in a sewing machine;
[0040] Fig.12 A schematic diagram of the structure of the filtering module provided in an embodiment of the present application.
[0041] in:
[0042] Sewing machine 100,
[0043] Rotary hook module 10, filter module 20, drive module 30, oil pan 40, cooling module 50, fixing plate 60,
[0044] Rotary hook sleeve 110, rotary hook shaft 120, rotary hook oil quantity adjustment member 130, positioning groove 140, oil injection port 150, shuttle frame 160, gear 170, oil pipe nozzle 180,
[0045] Rotary hook cover 111, inlet hole 1111, rotary hook oil quantity adjustment hole 1112, outlet hole 1113, oil guide groove 1114,
[0046] Rotary hook inner sleeve 112, spiral groove 1121, rotary hook oil inlet hole 1122, oil outlet groove 1123,
[0047] The first oil pipe nozzle 181, the second oil pipe nozzle 182,
[0048] Transparent housing 210, addition port 220, filter screen 230, filter inlet 240, filter outlet 250,
[0049] Lower shaft 310, pump assembly 320, fan blade 330, eccentric cam 340,
[0050] Stud 321 and screw 322 . DETAILED DESCRIPTION
[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0052] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0053] Please refer to Figure 1 and Figure 2 ,in, Figure 1 This is a schematic diagram of the installation of the rotary hook sleeve in the rotary hook module provided in the embodiment of the present application. Figure 2 A schematic diagram of the disassembly of a rotary hook sleeve provided in one embodiment of the present application.
[0054] In the first specific embodiment, the rotary hook sleeve 110 provided in the embodiment of the present application is arranged on the rotary hook shaft 120, and the rotary hook sleeve 110 includes a rotary hook outer sleeve 111 and a rotary hook inner sleeve 112 which are nested. The rotary hook outer sleeve 111 is provided with an inlet hole 1111, and the rotary hook inner sleeve 112 is located inside the rotary hook outer sleeve 111. The outer side of the rotary hook inner sleeve 112 is provided with a spiral groove 1121, and the spiral groove 1121 is communicated with the inlet hole 1111. The spiral groove 1121 is provided with a rotary hook oil inlet hole 1122 leading to the inner side of the rotary hook inner sleeve 112.
[0055] In the traditional sewing machine 100, the rotary hook is a key component. Due to the lack of an effective cooling mechanism, the temperature of the rotary hook rises after a long period of work, which not only affects the strength and durability of the sewing thread, but also may cause the problem of thread breakage during the sewing process, thereby reducing the working efficiency and product quality of the sewing machine. In view of this technical problem, the rotary hook sleeve 110 provided in the present application adopts an innovative design. The rotary hook sleeve 110 is composed of a rotary hook outer sleeve 111 and a rotary hook inner sleeve 112 which are nested. The outer sleeve 111 is provided with an inlet hole 1111, and the inner sleeve 112 is located inside the outer sleeve 111. The design of the spiral groove 1121 on the outer side is the core of the present technical solution. The spiral groove 1121 is connected with the inlet hole 1111, ensuring that the lubricating medium can smoothly flow into and fill the spiral groove 1121. At the same time, the spiral groove 1121 is also provided with a rotary hook oil inlet hole 1122 leading to the inner side of the rotary hook inner sleeve 112, so that the lubricating medium can directly enter the key part of the rotary hook.
[0056] This design significantly increases the contact area between the lubricating medium and the inner sleeve 112 of the rotary hook, thereby improving the heat exchange efficiency. The heat generated during the operation of the rotary hook can be quickly transferred to the spiral groove 1121 through the lubricating medium, and then the heat is taken away by the flow of the lubricating medium, effectively reducing the temperature of the rotary hook. Due to the design of the spiral groove 1121, the rotary hook can be kept cool and lubricated even under high load and long-term working conditions, reducing the problem of reduced strength and durability of the sewing thread caused by excessive temperature.
[0057] In combination with the above structure and process description, it can be seen that the rotary shuttle sleeve 110 has at least the following beneficial effects: the rotary shuttle sleeve 110 increases the contact area between the lubricating medium and the sleeve through the spiral groove 1121 design on the rotary shuttle inner sleeve 112, and improves the heat exchange efficiency, thereby solving the problem that the traditional rotary shuttle affects the strength and durability of the sewing thread due to the increase in temperature after working for a long time, and reduces the phenomenon of thread breakage during sewing.
[0058] like Figure 1As shown, taking the rotary hook module 10 including the rotary hook sleeve 110 as an example, the rotary hook module 10 also includes a shuttle rack 160 for mounting a rotary hook assembly including a rotary hook and a rotary hook shaft 120. The shuttle rack 160 may be provided with an oil pipe nozzle 180, through which a lubricating medium is delivered to the rotary hook sleeve 110.
[0059] It should be noted that, according to different forms of lubrication cycles, the rotary hook sleeve 110 has at least two structural variations.
[0060] In one embodiment, the lubrication circulation form corresponding to the rotary hook sleeve 110 is a closed type.
[0061] Specifically, if Figure 1 and Figure 2 As shown, the rotary shuttle housing 111 is further provided with an outlet hole 1113 , the spiral groove 1121 is communicated with the outlet hole 1113 , and the position where the spiral groove 1121 communicates with the inlet hole 1111 is located above the position where the spiral groove 1121 communicates with the outlet hole 1113 .
[0062] In this embodiment, the design of the rotary hook sleeve 110 meets the requirements of a closed lubrication cycle. This design allows the lubricating medium to circulate within the system, thereby improving the utilization rate of the lubricating medium and reducing the pollution to the external environment. Specifically, the rotary hook outer sleeve 111 is specially provided with an outlet hole 1113. This design allows the lubricating medium in the spiral groove 1121 to flow out through the outlet hole 1113, for example, after flowing out, it is filtered and re-enters the inlet hole 1111 to participate in lubrication.
[0063] Therefore, the spiral groove 1121 is not only connected to the inlet hole 1111 to ensure the smooth inflow of the lubricating medium, but also connected to the outlet hole 1113 so that the lubricating medium can be discharged from the outlet hole 1113 after lubrication is completed.
[0064] In addition, the position where the spiral groove 1121 communicates with the inlet hole 1111 is located above the position where the spiral groove 1121 communicates with the outlet hole 1113. Such a layout helps the lubricating medium to form an effective circulation flow path inside the rotary shuttle sleeve 110, further improving the lubrication efficiency and heat exchange performance.
[0065] Please refer to Figure 3 and Figure 4 , Figure 3 for Figure 2 Schematic diagram of the cross section of the middle hook sleeve at the inlet position. Figure 4 for Figure 2 Schematic cross-section of the middle hook sleeve at the exit position.
[0066] like Figure 3As shown, the oil pipe nozzle 180 includes a first oil pipe nozzle 181 , which is communicated with the inlet hole 1111 , and the lubricating medium is input through the first oil pipe nozzle 181 and then sent into the rotary hook sleeve 110 through the inlet hole 1111 .
[0067] like Figure 4 As shown, the oil pipe nozzle 180 includes a second oil pipe nozzle 182 , which is communicated with the outlet hole 1113 , and the lubricating medium in the rotary hook sleeve 110 flows out through the outlet hole 1113 and is then output through the second oil pipe nozzle 182 .
[0068] Please refer to Figure 5 and Figure 6 , Figure 5 A schematic diagram of a disassembled hook sleeve provided in another embodiment of the present application is shown in FIG. Figure 6 for Figure 5 Schematic cross-section of the middle hook sleeve at the exit position.
[0069] In another embodiment, the lubrication circulation form corresponding to the rotary hook sleeve 110 is open.
[0070] Specifically, the rotary hook housing 111 is further provided with an oil guide groove 1114 , and the spiral groove 1121 is provided with an oil outlet groove 1123 . The oil outlet groove 1123 is communicated with the oil guide groove 1114 to form an oil injection port 150 .
[0071] In this embodiment, the design of the rotary hook sleeve 110 introduces the concept of an open lubrication cycle, and achieves a more direct lubrication and cooling effect through a specific structural design. Specifically, the outlet hole 1113 is removed from the rotary hook outer sleeve 111, and an oil guide groove 1114 is added. At the same time, the spiral groove 1121 of the rotary hook inner sleeve 112 adds an oil outlet groove 1123. This design allows the oil outlet groove 1123 to communicate with the oil guide groove 1114 to form an oil injection port 150. The oil injection port 150 can directly face the lubricated parts of the rotary hook assembly, such as the gear 170 located below the rotary hook sleeve 110.
[0072] Optionally, the shuttle shaft sleeve 110 also includes a shuttle oil quantity adjusting member 130; the shuttle housing 111 is provided with a shuttle oil quantity adjusting hole 1112, the shuttle oil quantity adjusting member 130 is installed in the shuttle oil quantity adjusting hole 1112, the shuttle oil quantity adjusting member 130 penetrates into the shuttle oil inlet hole 1122, and the gap between the shuttle oil quantity adjusting member 130 and the shuttle oil inlet hole 1122 is adjustable.
[0073] In this embodiment, in order to further improve the functionality of the rotary hook sleeve 110 and optimize its lubrication efficiency, the rotary hook sleeve 110 is designed to include an optional component, a rotary hook oil quantity adjustment member 130. This design allows the operator to accurately adjust the flow rate of the lubricating medium according to actual working conditions and requirements.
[0074] One end of the rotary hook oil quantity adjusting member 130 is inserted into the rotary hook oil inlet hole 1122, and the flow rate of the lubricating medium can be adjusted by the gap between the rotary hook oil inlet hole 1122 and the rotary hook oil inlet hole 1122. This design provides a simple and effective method to control the supply amount of the lubricating medium. Since the rotary hook oil quantity adjusting member 130 directly acts on the rotary hook sleeve 110 to adjust the flow rate, compared with other methods, it has the characteristics of accurate adjustment and fast response speed.
[0075] Furthermore, the head of the rotary hook oil quantity adjusting member 130 penetrates into the rotary hook oil inlet hole 1122 , and the head has a taper in the axial direction of the rotary hook oil quantity adjusting member 130 , and the rotary hook oil quantity adjusting member 130 is threadedly matched with the rotary hook oil quantity adjusting hole 1112 .
[0076] In this embodiment, the head of the rotary hook oil quantity adjusting member 130 is designed to have a taper. This feature allows the size of the gap between the head and the rotary hook oil inlet hole 1122 to change accordingly when the rotary hook oil quantity adjusting member 130 is screwed to different positions along the axis in the rotary hook oil quantity adjusting hole 1112. This taper design provides a progressive adjustment mechanism: as the rotary hook oil quantity adjusting member 130 is screwed in or out, its tapered head changes its relative position with the rotary hook oil inlet hole 1122, thereby finely controlling the flow of the lubricating medium.
[0077] In this way, the operator can adjust the axial position of the rotary hook oil quantity adjustment member 130 according to the actual lubrication demand and the working condition of the rotary hook to achieve precise control of the lubrication flow. The advantage of the taper design is that it can provide a continuous adjustment range instead of a simple on-off control, so that the lubrication system can better adapt to different working conditions, optimize the operating efficiency of the rotary hook and extend its service life.
[0078] like Figure 1 As shown, taking the rotary hook module 10 including the above-mentioned rotary hook sleeve 110 as an example, the rotary hook module 10 also includes a shuttle frame 160 for mounting a rotary hook assembly including a rotary hook and a rotary hook shaft 120. The rotary hook oil quantity adjustment member 130 is rotatably mounted on the shuttle frame 160, and the rotary hook oil quantity adjustment member 130 is threadedly assembled in the rotary hook oil quantity adjustment hole 1112 and penetrates into the rotary hook oil inlet hole 1122. Through the rotary hook oil quantity adjustment member 130, the user can easily adjust the supply of the lubricating medium according to the actual sewing needs and the workload of the rotary hook, ensuring that the rotary hook assembly is always kept in the best working state.
[0079] Furthermore, at a position connected to the spiral groove 1121 , the outlet hole 1113 is located at the bottom of the spiral groove 1121 , the rotary hook oil amount adjustment hole 1112 is located at the top of the spiral groove 1121 , and the inlet hole 1111 is located on the side close to the top of the spiral groove 1121 .
[0080] As an option, the rotary hook outer sleeve 111 and the rotary hook inner sleeve 112 are interference fit.
[0081] In this embodiment, the hook outer sleeve 111 and the hook inner sleeve 112 are fitted by interference fit. Interference fit is a fixed connection method in mechanical design, which creates a tight mechanical interference between the two parts to ensure the stability and concentricity of the hook outer sleeve 111 and the hook inner sleeve 112 during operation.
[0082] Optionally, the rotary hook outer sleeve 111 and the rotary hook inner sleeve 112 are provided with positioning grooves 140 .
[0083] In this embodiment, the positioning groove 140 is disposed on the same side of the rotary hook outer sleeve 111 and the rotary hook inner sleeve 112. Figure 2 The upper side of the middle hook outer sleeve 111 and the hook inner sleeve 112. The positioning groove 140 can provide an alignment effect, thereby ensuring that the hook outer sleeve 111 and the hook inner sleeve 112 are positioned accurately when the hook outer sleeve 111 and the hook inner sleeve 112 are assembled.
[0084] As an option, the material of the rotary hook outer sleeve 111 and the rotary hook inner sleeve 112 is copper.
[0085] In this embodiment, copper can be selected as the manufacturing material of the hook outer sleeve 111 and the hook inner sleeve 112. Copper is selected because of its excellent thermal conductivity, which helps to more effectively transfer the heat generated by the hook during operation to the lubricating medium, and then take away the heat through the flow of the lubricating medium, achieving a better cooling effect.
[0086] Please refer to Figure 7 , Figure 7 A schematic diagram of the oil circuit of a rotary hook cooling and lubrication system provided in one embodiment of the present application.
[0087] The present application also provides a rotary hook cooling and lubrication system, including a rotary hook module 10, a filter module 20 and a drive module 30, wherein the rotary hook module 10 includes the above-mentioned rotary hook sleeve 110; the rotary hook module 10, the filter module 20 and the drive module 30 are located in the rotary hook lubricating oil circuit.
[0088] In this embodiment, each module is connected by an oil pipe to form a rotary hook lubricating oil circuit. During operation, the driving module 30 continuously absorbs lubricating medium from the filtering module 20, and supplies the lubricating medium to the rotary hook module 10, at least to the rotary hook sleeve 110; the lubricating medium is supplied to the rotary hook assembly through the rotary hook sleeve 110, and after lubrication and heat exchange, the lubricating medium is collected at a designated location and can be filtered by the filtering module 20 and then participate in the lubrication work again.
[0089] It should be emphasized that the shuttle sleeve 110 is a key component in the present application, which plays a role in cooling and lubrication. The shuttle sleeve 110 is located at the top of the shuttle upward and the gear 170 downward, so as long as the temperature of this position can be reduced, the temperature of the entire shuttle assembly can be reduced. The spiral groove 1121 on the shuttle inner sleeve 112 is provided with a shuttle oil inlet hole 1122, and there is also a hole on the shuttle shaft 120 opposite to it. The hole on the shuttle shaft 120 passes through the hollow of the shuttle, so that under the driving action of the drive module 30, the lubricating medium can flow into the inside of the shuttle, thereby playing a significant lubricating role on the shuttle.
[0090] It should be noted that, according to different forms of lubrication cycles, the rotary hook sleeve 110 has at least two structural variations, and the rotary hook cooling and lubrication system has corresponding structural variations.
[0091] Please refer to Figure 8 and Fig. 9 , Figure 8 for Figure 7 Schematic diagram of the disassembly of the cooling and lubrication system of the middle hook. Fig. 9 for Figure 7 Schematic diagram of the installation of the shuttle cooling and lubrication system in a sewing machine.
[0092] In one embodiment, the lubrication circulation form corresponding to the rotary hook cooling and lubrication system is a closed type.
[0093] Specifically, the rotary shuttle module 10 includes a shuttle frame 160 provided with a first oil pipe nozzle 181 and a second oil pipe nozzle 182. The first oil pipe nozzle 181 is communicated with the inlet hole 1111 of the rotary shuttle housing 111, and the second oil pipe nozzle 182 is communicated with the outlet hole 1113 of the rotary shuttle housing 111. The rotary shuttle lubricating oil circuit is a closed cycle, and its oil inlet route is the filter module 20, the drive module 30, and the rotary shuttle module 10, and the oil return route is the rotary shuttle module 10, the drive module 30, and the filter module 20.
[0094] In this embodiment, the rotary shuttle cooling and lubrication system is designed as a closed cycle, which optimizes the recycling of the lubricating medium and the system efficiency. The rotary shuttle module 10 realizes the inflow and outflow of the lubricating medium through the first oil pipe nozzle 181 and the second oil pipe nozzle 182 on the shuttle frame 160. The first oil pipe nozzle 181 is connected to the inlet hole 1111 of the rotary shuttle housing 111, which is responsible for supplying the lubricating medium; the second oil pipe nozzle 182 is connected to the outlet hole 1113, which is used to export the lubricating medium after use. This design allows the lubricating medium to circulate between the filter module 20, the drive module 30 and the rotary shuttle module 10, forming a closed path, reducing the loss of the lubricating medium and environmental pollution, while maintaining the stability of the lubricating medium performance, and improving the operating efficiency and reliability of the sewing machine.
[0095] Please refer to Fig.10 and Fig.11 , Fig.10 A schematic diagram of the oil circuit of a rotary hook cooling and lubrication system provided in another embodiment of the present application, Fig.11 for Fig.10 Schematic diagram of the installation of the shuttle cooling and lubrication system in a sewing machine.
[0096] In another embodiment, the lubrication circulation form corresponding to the rotary hook cooling and lubrication system is open.
[0097] Specifically, the rotary shuttle module 10 includes a shuttle frame 160 provided with a first oil pipe nozzle 181 and an oil return port. The first oil pipe nozzle 181 is communicated with the inlet hole 1111 of the rotary shuttle housing 111. The oil injection port 150 of the rotary shuttle housing 111 is used to spray oil toward the gear 170 of the rotary shuttle module 10. The oil return port is used to drain the lubricating medium in the rotary shuttle module 10 to the oil pan 40. The rotary shuttle lubricating oil circuit is an open cycle, and its oil inlet route is the oil pan 40, the filter module 20, the drive module 30, and the rotary shuttle module 10, and the oil return route is the rotary shuttle module 10 and the oil pan 40.
[0098] In this embodiment, the lubrication circulation form of the rotary hook cooling and lubrication system is open, providing a direct and efficient lubrication method. The shuttle frame 160 of the rotary hook module 10 is designed with a first oil pipe nozzle 181, which is connected to the inlet hole 1111 of the rotary hook housing 111, ensuring that the lubricating medium can smoothly flow into the rotary hook sleeve 110. In addition, the rotary hook housing 111 is specially designed with an oil injection port 150, which directly sprays oil on the gear 170 in the rotary hook module 10, such as the meshing position of the small gear and the large gear in the gear 170, to achieve precise lubrication.
[0099] In the open circulation system, the used lubricating medium is recovered through the oil return port and drained back to the oil pan 40, thereby forming an oil inlet route starting from the oil pan 40, passing through the filter module 20 and the drive module 30, and finally reaching the hook module 10. The used lubricating medium then returns to the oil pan 40 through the oil return port, completing the circulation process.
[0100] It should be noted that in this open structure, the oil pan 40 also provides a cooling effect on the lubricating medium, that is, the lubricating medium achieves a cooling effect in the process of flowing from the head to the tail of the oil pan 40.
[0101] Please continue to refer to Figures 7 to 9 In some embodiments, the rotary shuttle cooling and lubrication system further includes a cooling module 50; the rotary shuttle module 10 is connected to the oil circuit of the cooling module 50, the cooling module 50 is connected to the oil circuit of the filter module 20, the filter module 20 is connected to the oil circuit of the drive module 30, and the drive module 30 is connected to the oil circuit of the rotary shuttle module 10.
[0102] In this embodiment, reference Figures 7 to 9The design of the rotary hook cooling and lubrication system is further expanded to include a cooling module 50. The addition of this module significantly improves the cooling efficiency and lubrication performance of the entire system. The rotary hook module 10 is connected to the cooling module 50 through an oil circuit, ensuring that the lubricating medium can directly enter the cooling module 50 for heat exchange after flowing through the rotary hook module 10, thereby reducing the temperature of the lubricating medium.
[0103] The design of the cooling module 50 allows the lubricating medium to quickly release heat through its structural design (such as cooling fins or other cooling mechanisms) when flowing therein, so as to keep the temperature of the lubricating medium within the optimal working range. Subsequently, the cooled lubricating medium flows into the filtering module 20 to filter and clean impurities to ensure the cleanliness of the lubricating medium.
[0104] The oil circuit connection between the filter module 20 and the drive module 30 ensures that the filtered clean lubricating medium can be effectively delivered to the drive module 30. The drive module 30 is responsible for providing power to drive the lubricating medium to circulate throughout the system, including returning to the hook module 10, completing the entire lubrication and cooling cycle.
[0105] This design not only improves the cooling effect of the lubricating medium, but also ensures the continuous flow and circulation of the lubricating medium in the entire system, thereby providing continuous lubrication and cooling for the rotary hook assembly, extending the service life of the equipment and improving working efficiency. By adding the cooling module 50, the rotary hook cooling and lubrication system becomes more perfect and can adapt to higher load and longer working conditions.
[0106] In some embodiments, the driving module 30 includes a lower shaft 310 and a pump assembly 320 disposed on the lower shaft 310 . The pump assembly 320 is used to drive the lubricating medium in the lubricating oil path of the rotary hook to flow under the drive of the lower shaft 310 .
[0107] In this embodiment, the core components of the driving module 30 are the lower shaft 310 and the pump assembly 320 installed on the lower shaft 310. The arrangement of the pump assembly 320 is crucial because it is responsible for providing power to the rotary hook lubrication oil circuit under the drive of the lower shaft 310 to ensure the flow of the lubrication medium in the entire system.
[0108] The working principle of the pump assembly 320 is that the pump assembly 320 transmits power to the lubricating medium through the rotation of the lower shaft 310 to realize the circulation of the medium. This design allows the lubricating medium to continuously flow through the rotary shuttle module 10, the cooling module 50, and the filter module 20 at a certain flow rate and pressure.
[0109] It should be noted that the present embodiment does not limit the structural form of the pump assembly 320. For example, the pump assembly 320 may be in the form of a diaphragm pump or a plunger pump, both of which should fall within the scope of the present application.
[0110] In some cases, the pump assembly 320 includes a diaphragm pump, which is driven by the lower shaft 310. Optionally, an eccentric cam 340 is provided on the lower shaft 310, and when the eccentric cam 340 rotates, it exerts different effects on the diaphragm pump, thereby achieving the driving effect of the diaphragm pump.
[0111] In some cases, the pump assembly 320 includes a plunger pump, which is driven by the lower shaft 310. Optionally, a notch is provided on the lower shaft 310, and when the notch rotates, different effects are exerted on the plunger pump, thereby achieving the driving effect of the plunger pump.
[0112] In some embodiments, the rotary shuttle cooling and lubrication system further includes a fan blade 330, which is mounted on a pulley on the lower shaft 310 and is disposed toward the cooling module 50.
[0113] In this embodiment, the rotary hook cooling and lubrication system enhances the cooling effect by adding fan blades 330. These fan blades are mounted on the pulley of the lower shaft 310, rotate with the rotation of the pulley, and are directly aimed at the cooling module 50. The airflow assisting effect of the fan blades 330 helps to quickly reduce the temperature of the lubricating medium, improve the cooling efficiency of the entire system, and ensure that the rotary hook assembly maintains a suitable temperature range when operating efficiently.
[0114] In some embodiments, the cooling module 50 is provided with cooling fins.
[0115] In this embodiment, the cooling module 50 is equipped with cooling fins, which enhances the heat exchange capacity of the cooling module. The cooling fins increase the surface area in contact with the lubricating medium and more effectively dissipate the heat in the lubricating medium to the environment, thereby reducing its temperature. This design is essential for maintaining the circulation of the lubricating medium within the ideal temperature range, and helps to improve the cooling effect of the hook assembly and the thermal management efficiency of the overall system.
[0116] Please refer to Fig.12 , Fig.12 A schematic diagram of the structure of the filtering module provided in an embodiment of the present application.
[0117] In some embodiments, the filtration module 20 includes a transparent shell 210, the transparent shell 210 is provided with an addition port 220 connected to the interior thereof, the interior of the transparent shell 210 is provided with a filter net 230, the interior of the transparent shell 210 is divided into a first area and a second area by the filter net 230, the transparent shell 210 is provided with a filter inlet 240 and a filter outlet 250, the filter inlet 240 is connected to the first area, and the filter outlet 250 is connected to the second area.
[0118] In this embodiment, the filter module 20 allows the user to visually observe the flow of the internal lubricating medium and the remaining capacity. The internal filter screen 230 can perform preliminary filtering when the lubricating medium flows in. For example, the lubricating medium added to the first area through the filter inlet 240 needs to pass through the filter screen 230 before entering the second area and being discharged through the filter outlet 250, thereby ensuring the cleanliness of the lubricating medium. The operation of adding the lubricating medium is also convenient. The addition port 220 can usually be blocked with a rubber plug. After removing the rubber plug, the lubricating medium can be added through the addition port 220. This design makes the filter module 20 both practical and easy to maintain.
[0119] Optionally, the transparent housing 210 is made of transparent rigid organic glass.
[0120] The present application also provides a sewing machine 100, comprising the above-mentioned rotary hook cooling and lubrication system.
[0121] In this embodiment, the sewing machine 100 should have all the beneficial effects of the above-mentioned rotary hook cooling and lubrication system, which will not be described in detail here.
[0122] like Figure 8 As shown, the sewing machine 100 includes a fixing plate 60, and the filter module 20 and the cooling module 50 are fixed on the fixing plate 60. The sewing machine 100 includes a housing, and a pump assembly 320 such as a diaphragm pump is fixed to the housing through a stud 321 and a screw 322.
[0123] In some embodiments, the sewing machine 100 is a double-needle machine having two needles, which can sew two threads simultaneously in one sewing process.
[0124] In this embodiment, the number of rotary hook cooling and lubrication systems in the double needle machine is two groups. Figure 8 The diagram shows a set of rotary hook cooling and lubrication systems. Figure 8 The rotary hook cooling and lubrication system in the embodiment is regarded as the rotary hook cooling and lubrication system corresponding to the left shuttle rack. In addition, the double-needle machine also has a rotary hook cooling and lubrication system corresponding to the right shuttle rack.
[0125] In addition, the present application does not limit the material of the lubricating medium, and should not be limited to white oil, but can also be other substances with cooling and lubricating effects.
[0126] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or through conventional experimental methods.
[0127] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0128] The above is a detailed introduction to the rotary hook sleeve, rotary hook cooling and lubrication system, and sewing machine provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.
Claims
1. A rotary hook sleeve, arranged on a rotary hook shaft, characterized in that: The rotary hook sleeve includes a rotary hook outer sleeve and a rotary hook inner sleeve which are nested. The rotary hook outer sleeve is provided with an inlet hole. The rotary hook inner sleeve is located inside the rotary hook outer sleeve. The outer side of the rotary hook inner sleeve is provided with a spiral groove which is communicated with the inlet hole. The spiral groove is provided with a rotary hook oil inlet hole which leads to the inner side of the rotary hook inner sleeve.
2. The rotary hook sleeve according to claim 1, characterized in that: The rotary hook shaft sleeve also includes a rotary hook oil quantity adjusting member; the rotary hook outer sleeve is provided with a rotary hook oil quantity adjusting hole, the rotary hook oil quantity adjusting member is installed in the rotary hook oil quantity adjusting hole, the rotary hook oil quantity adjusting member penetrates into the rotary hook oil inlet hole, and the gap between the rotary hook oil quantity adjusting member and the rotary hook oil inlet hole is adjustable.
3. The rotary hook sleeve according to claim 1, characterized in that: The outer sleeve of the rotary hook is interference-fitted with the inner sleeve of the rotary hook; and / or, The head of the rotary hook oil quantity adjusting member penetrates into the rotary hook oil inlet hole, the head has a taper in the axial direction of the rotary hook oil quantity adjusting member, and the rotary hook oil quantity adjusting member is threadedly matched with the rotary hook oil quantity adjusting hole; and / or, The rotary hook outer sleeve and the rotary hook inner sleeve are provided with positioning grooves; and / or, The material of the rotary hook outer sleeve and the rotary hook inner sleeve is copper.
4. The rotary hook sleeve according to claim 1, characterized in that: The rotary hook housing is further provided with an outlet hole, the spiral groove is communicated with the outlet hole, and the position where the spiral groove communicates with the inlet hole is located above the position where the spiral groove communicates with the outlet hole; or, The hook outer shell is also provided with an oil guide groove, the spiral groove is provided with an oil outlet groove, and the oil outlet groove is communicated with the oil guide groove to form an oil injection port.
5. A hook cooling and lubrication system, characterized in that: It comprises a rotary hook module, a filter module and a drive module, wherein the rotary hook module comprises the rotary hook sleeve according to any one of claims 1 to 4; the rotary hook module, the filter module and the drive module are located on the rotary hook lubricating oil circuit.
6. The hook cooling and lubrication system according to claim 5, characterized in that: The rotary hook module includes a shuttle frame provided with a first oil pipe nozzle and a second oil pipe nozzle, the first oil pipe nozzle is communicated with the inlet hole of the rotary hook housing, the second oil pipe nozzle is communicated with the outlet hole of the rotary hook housing, the rotary hook lubricating oil circuit is a closed cycle, the oil inlet route is the filter module, the drive module, the rotary hook module, and the oil return route is the rotary hook module, the drive module, and the filter module; or, The rotary shuttle module includes a shuttle frame provided with a first oil pipe nozzle and an oil return port, the first oil pipe nozzle is communicated with the inlet hole of the rotary shuttle housing, the oil spray port of the rotary shuttle housing is used to spray oil toward the gear of the rotary shuttle module, and the oil return port is used to guide the lubricating medium in the rotary shuttle module to the oil pan. The rotary shuttle lubricating oil circuit is an open cycle, and its oil inlet route is the oil pan, the filter module, the drive module, and the rotary shuttle module, and the oil return route is the rotary shuttle module and the oil pan.
7. The hook cooling and lubrication system according to claim 5, characterized in that: The rotary hook cooling and lubrication system also includes a cooling module; the rotary hook module is connected to the cooling module oil circuit, the cooling module is connected to the filter module oil circuit, the filter module is connected to the drive module oil circuit, and the drive module is connected to the rotary hook module oil circuit.
8. The hook cooling and lubrication system according to claim 7, characterized in that: The driving module includes a lower shaft and a pump assembly arranged on the lower shaft, and the pump assembly is used to drive the lubricating medium in the rotary hook lubricating oil circuit to flow under the drive of the lower shaft; The rotary hook cooling and lubrication system further comprises a fan blade, wherein the fan blade is mounted on a pulley on the lower shaft, and the fan blade is arranged toward the cooling module; and / or, The cooling module is provided with cooling fins; and / or, The filter module includes a transparent shell, the transparent shell is provided with an addition port communicating with the interior thereof, a filter net is provided inside the transparent shell, the interior of the transparent shell is divided into a first area and a second area by the filter net, the transparent shell is provided with a filter inlet and a filter outlet, the filter inlet is communicated with the first area, and the filter outlet is communicated with the second area.
9. The hook cooling and lubrication system according to claim 8, characterized in that: The pump assembly comprises a diaphragm pump driven by the lower shaft; and / or, The pump assembly includes a plunger pump, and the diaphragm pump is driven by the lower shaft.
10. A sewing machine, characterized in that: The invention comprises a rotary hook cooling and lubrication system as claimed in any one of claims 5 to 9.