Sewing machine head oil supply mechanism and sewing machine

Abstract

The utility model relates to a sewing machine head oil supply mechanism and a sewing machine, the sewing machine head oil supply mechanism comprises a first oil storage tank assembly, the first oil storage tank assembly comprises a first oil storage tank and a first oil guide structure, a needle rod assembly comprises a needle rod structure and a first needle rod sleeve, the first needle rod sleeve is matched with a sewing machine main body, and the first oil guide structure is matched with the needle rod structure. The first needle rod sleeve is arranged on the circumferential outer side of the needle rod structure in a sleeving mode and provided with a first communicating hole penetrating through the side wall of the first needle rod sleeve, and the first oil guide structure communicates with the interior of the first oil storage tank and the first communicating hole. According to the technical scheme, the problem that in the prior art, lubricating oil conveying of a sewing machine is not stable is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of the oil supply structure of sewing machines, and more specifically, to an oil supply mechanism for a sewing machine head and a sewing machine. Background Art

[0002] A sewing machine is a machine that forms one or more stitches on a sewing material with one or more sewing threads, so as to interweave or stitch together one or more layers of sewing materials. Sewing machines include sewing machines, stitching machines, embroidery machines, quilting machines, etc.

[0003] A sewing machine needs the reciprocating motion of the sewing needle and the rotary hook to cooperate, that is, there are multiple moving parts inside the sewing machine. There is relative motion between the moving parts and other components or themselves, so lubrication is required to reduce friction and wear.

[0004] Some existing sewing machines connect the moving parts of the sewing needle to an oil supply tank, and convey lubricating oil to the positions that need to be lubricated. Such a structure will cause that when the running speed of the sewing needle is slow, the lubricating oil power cannot reach the parts that need to be lubricated, resulting in increased friction and wear; when the running speed of the sewing needle is fast, the lubricating oil delivery volume is large, causing waste of lubricating oil and even polluting the sewing thread with lubricating oil. Summary of the Utility Model

[0005] The present application provides an oil supply mechanism for a sewing machine head and a sewing machine to solve the problem of unstable lubricating oil delivery of the sewing machine in the prior art.

[0006] An oil supply mechanism for a sewing machine head according to the present application includes: a first oil storage tank assembly, the first oil storage tank assembly includes a first oil storage tank and a first oil guiding structure, the needle bar assembly includes a needle bar structure and a first needle bar sleeve, the first needle bar sleeve is matched with the sewing machine main body, the first needle bar sleeve is sleeved on the circumferential outer side of the needle bar structure, the first needle bar sleeve has a first communication hole penetrating the side wall of the first needle bar sleeve, and the first oil guiding structure communicates the inside of the first oil storage tank and the first communication hole.

[0007] Further, the inner wall of the first needle bar sleeve has a first oil guiding groove, the first oil guiding groove extends along the axial direction of the needle bar structure and is communicated with the first communication hole.

[0008] Further, the first oil guiding structure includes a first oil wick, the first end of the first oil wick is located in the first oil storage tank, and the second end of the first oil wick is located in the needle bar assembly.

[0009] Further, the first oil storage tank assembly further includes a second oil guiding structure, the needle bar assembly includes an adjustment driving part and a transmission rod, the transmission rod is rotatably arranged on the sewing machine housing, the adjustment driving part is matched with the transmission rod, the transmission rod is matched with the needle bar structure, and the second oil guiding structure is respectively communicated with the first oil storage tank and the transmission rod.

[0010] Furthermore, the first oil storage tank assembly further includes a third oil guiding structure. The adjustment driving part is an adjustment driving motor. The adjustment driving motor is engaged with a transmission rod through bevel gears, and the transmission rod is engaged with a needle bar structure through transmission gears to achieve axial adjustment of the sewing needle. The third oil guiding structure is communicated with both the bevel gears and the transmission gears.

[0011] Furthermore, the first oil storage tank is arranged at the upper part of the sewing machine housing.

[0012] Furthermore, the sewing machine head oil supply mechanism further includes a second oil storage tank assembly. The second oil storage tank assembly further includes a second oil storage tank and a fourth oil guiding structure. The fourth oil guiding structure is communicated with the second oil storage tank and the needle bar structure.

[0013] Furthermore, the crank disc for driving the needle bar assembly has a hollow lubricating oil accommodating space, and there is a lubricating oil channel communicating the oil storage space and the rotating shaft mounting hole.

[0014] According to another aspect of the present application, there is also provided a sewing machine, which includes a sewing machine frame device, a head device and a chassis device. The head device is located at the upper part of the machine table of the sewing machine frame device, the chassis device is located at the lower part of the machine table of the sewing machine frame device, and the head device includes the above-mentioned sewing machine head oil supply mechanism.

[0015] Furthermore, the chassis device includes a third oil storage tank assembly, and the third oil storage tank assembly is communicated with the gear assembly in the chassis device.

[0016] Applying the technical solution of the present application, by providing the first oil storage tank and the first oil guiding structure, the first oil guiding structure communicates the inside of the first oil storage tank and the first communication hole, that is, the first oil guiding structure can introduce the lubricating oil in the first oil storage tank into the needle bar assembly to lubricate the relative moving parts between the first needle bar sleeve and the needle bar structure, changing the traditional way of using the operation of the sewing needle to drive the lubricating oil, resulting in different output amounts of lubricating oil due to different sewing needle speeds. In this way, the output of the lubricating oil is relatively stable and the lubrication effect is relatively stable. The technical solution of the present application effectively solves the problem of unstable lubricating oil delivery in the existing sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Shows a schematic three-dimensional structure diagram of the oil supply mechanism of the sewing machine head according to an embodiment of the present application;

[0020] Figure 2 Shows Figure 1 a schematic plan structure diagram of the oil supply mechanism of the sewing machine head;

[0021] Figure 3 Shows Figure 1 a schematic process structure diagram of the first fuel tank assembly;

[0022] Figure 4 Shows Figure 1 a schematic three-dimensional structure diagram of the first needle bar sleeve of the oil supply mechanism of the sewing machine head;

[0023] Figure 5 Shows Figure 1 a schematic three-dimensional structure diagram of the second fuel tank assembly of the oil supply mechanism of the sewing machine head;

[0024] Figure 6 Shows Figure 5 a schematic plan structure diagram of the oil supply mechanism of the sewing machine head;

[0025] Figure 7 Shows Figure 5 a schematic process structure diagram of the second fuel tank assembly;

[0026] Figure 8 Shows Figure 1 a schematic three-dimensional structure diagram of the crank disc;

[0027] Figure 9 Shows Figure 8 a schematic plan structure diagram of the crank disc;

[0028] Figure 10 Shows Figure 8 a schematic sectional view of the crank disc.

[0029] Among them, the above-mentioned drawings include the following reference numerals:

[0030] 10. First fuel tank assembly; 11. First fuel tank; 12. First oil guiding structure; 13. Second oil guiding structure; 14. Third oil guiding structure; 20. Second fuel tank assembly; 30. Third fuel tank assembly; 100. Needle bar assembly; 110. Needle bar structure; 120. First needle bar sleeve; 121. First communication hole; 122. First oil guiding groove; 130. Adjustment drive motor; 140. Bevel gear; 150. Transmission gear; 160. Transmission rod; 200. Crank disc; 210. Lubricating oil accommodation space; 220. Lubricating oil channel; 230. Oil injection hole. Detailed Implementation Modes

[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] It should be pointed out that the following detailed description is illustrative and is intended to provide further description of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0033] For ease of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" and the like may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". The device can also be positioned in other different ways, rotated 90 degrees or in other orientations, and corresponding interpretations should be made for the spatial relative descriptions used herein.

[0034] As Figures 1 to 10 shown, the oil supply mechanism for the sewing machine head in this embodiment includes: a first oil storage tank assembly 10. The first oil storage tank assembly 10 includes a first oil storage tank 11 and a first oil guiding structure 12. The needle bar assembly 100 includes a needle bar structure 110 and a first needle bar sleeve 120. The first needle bar sleeve 120 is matched with the sewing machine main body. The first needle bar sleeve 120 is sleeved on the circumferential outer side of the needle bar structure 110. The first needle bar sleeve 120 has a first communication hole 121 penetrating through the side wall of the first needle bar sleeve 120. The first oil guiding structure 12 communicates the inside of the first oil storage tank 11 and the first communication hole 121.

[0035] Applying the technical solution of this embodiment, by setting the first oil storage tank 11 and the first oil guiding structure 12, the first oil guiding structure 12 connects the inside of the first oil storage tank 11 and the first communication hole 121, that is, the first oil guiding structure 12 can introduce the lubricating oil in the first oil storage tank 11 into the needle bar assembly 100 to lubricate the relative moving parts between the first needle bar sleeve 120 and the needle bar structure 110, changing the different output amounts of lubricating oil caused by the different speeds of the machine needle in the traditional method of using the machine needle to drive the lubricating oil. In this way, the output of the lubricating oil is relatively stable and the lubrication effect is relatively stable. The technical solution of this embodiment effectively solves the problem of unstable lubricating oil delivery in the existing sewing machine.

[0036] As Figures 1 to 4 shown, in the technical solution of this embodiment, the inner wall of the first needle bar sleeve 120 has a first oil guiding groove 122, and the first oil guiding groove 122 extends along the axial direction of the needle bar structure 110 and is connected to the first communication hole 121. The setting of the first oil guiding groove 122 is convenient for accommodating the first oil wick, and the first oil wick guides the lubricating oil between the first needle bar sleeve 120 and the needle bar structure 110, which can reduce friction, wear, and even the occurrence of jamming. In this embodiment, setting one first communication hole 121 can meet the requirements. One first oil guiding groove 122 is set, and the outlet hole of the first communication hole 121 is located at a position slightly above the middle of the first oil guiding groove 122. The lubricating oil flows downward under the action of gravity. Part of the first oil wick can be set in the upper part of the first oil guiding groove 122 of the first communication hole 121, or it can reach through the diffusion of the lubricating oil.

[0037] As Figure 2 and Figure 3 shown, in the technical solution of this embodiment, the first oil guiding structure 12 includes a first oil wick. The first end of the first oil wick is located in the first oil storage tank 11, and the second end of the first oil wick is located in the needle bar assembly 100. By means of the first oil wick, there is no need to set up special oil pipes and power equipment for pumping oil, which can greatly save costs. Specifically, the second end of the first oil wick is located in the first oil guiding groove 122, and an oil wick tube is provided on the circumferential outer side of the first oil wick between the first oil storage tank 11 and the first communication hole 121. The setting of the oil wick tube can, on the one hand, prevent the volatilization, dripping, and even pollution of other components of the lubricating oil, and on the other hand, prevent the first oil wick from being easily damaged by external forces.

[0038] As Figures 1 to 3As shown, in the technical solution of this embodiment, the first fuel tank assembly 10 further includes a second oil guiding structure 13. The needle bar assembly 100 includes an adjustment driving part and a transmission rod. The transmission rod is rotatably arranged on the sewing machine housing. The adjustment driving part is matched with the transmission rod, the transmission rod is matched with the needle bar structure 110, and the second oil guiding structure is respectively communicated with the first fuel tank 11 and the transmission rod. The setting of the second oil guiding structure increases the lubrication range, that is, the second oil guiding structure can lubricate the transmission rod. It should be noted that the first end of the second oil guiding structure is communicated with the inside of the first fuel tank 11, and the second end of the second oil guiding structure can be in contact with the transmission rod or can be suspended and matched with the transmission rod, and the lubricating oil can drip or atomize on the transmission rod.

[0039] As Figures 1 to 3 shown, in the technical solution of this embodiment, the first fuel tank assembly 10 further includes a third oil guiding structure. The adjustment driving part is an adjustment driving motor 130. The adjustment driving motor 130 is matched with the transmission rod through a bevel gear 140. The transmission rod is matched with the needle bar structure 110 through a transmission gear 150 to realize the axial adjustment of the sewing needle. The third oil guiding structure is communicated with both the bevel gear 140 and the transmission gear 150. The setting of the third oil guiding structure 14 further expands the range of lubricating parts with one fuel tank. It should be noted that the adjustment driving motor 130 drives the transmission rod 160 through a bevel gear (a driving bevel gear and a driven bevel gear). The rotation of the transmission rod 160 drives the axial movement of the needle bar structure 110 through the transmission gear. The axis of the transmission rod 160 is parallel to the axis of the needle bar structure 110.

[0040] As Figure 1 and Figure 2 shown, in the technical solution of this embodiment, the first fuel tank 11 is arranged at the upper part of the sewing machine housing. Such a structure saves the space inside the sewing machine housing on the one hand, and on the other hand, the setting position of the first fuel tank 11 can ensure that under the action of gravity, the flow and lubrication effect of the lubricating oil are better. It should be noted that the top of the first fuel tank 11 has three mounting holes, which respectively correspond to the first oil guiding structure 12, the second oil guiding structure 13 and the third oil guiding structure 14. The oil filling hole of the first fuel tank 11 is arranged on the bottom wall or the side wall of the first fuel tank 11. The second oil guiding structure 13 includes a second oil wick, and the third oil guiding structure 14 includes a third oil wick, which will not be elaborated here.

[0041] As Figures 5 to 7As shown, in the technical solution of this embodiment, the oil supply mechanism of the sewing machine head further includes a second oil storage tank assembly 20. The second oil storage tank assembly 20 further includes a second oil storage tank and a fourth oil guiding structure. The fourth oil guiding structure is connected to the second oil storage tank and the needle bar structure 110. The setting of the fourth oil guiding structure satisfies the lubrication at the bottom of the needle bar structure 110. For example, in this embodiment, the needle bar structure 110 includes a threaded rod sleeve and a threaded rod. The threaded rod sleeve is adaptively arranged on the circumferential outer side of the threaded rod. The threaded rod sleeve and the threaded rod are rotatably connected by threads. The bottom of the threaded rod has a sewing needle mounting seat. The threaded rod can rotate relative to the sewing needle mounting seat, but the threaded rod cannot axially move relative to the sewing needle mounting seat, that is, the threaded rod drives the sewing needle mounting seat to move up and down. The sewing needle is installed on the side of the sewing needle mounting seat away from the threaded rod. A second needle bar sleeve is further arranged on the circumferential outer side of the needle bar structure 110. The second needle bar sleeve is lower than the first needle bar sleeve 120. For example, the first needle bar sleeve 120 is installed on the upper wall of the sewing machine housing, and the second needle bar sleeve is installed on the lower wall of the sewing machine housing. The lubricating oil of the fourth oil guiding structure can lubricate between the second needle bar sleeve and the needle bar structure.

[0042] As Figures 8 to 10 shown, in the technical solution of this embodiment, the crank disc 200 driving the needle bar assembly 100 has a hollow lubricating oil accommodation space 210. The lubricating oil accommodation space 210 and the rotating shaft mounting hole have a connected lubricating oil channel 220. The lubricating oil accommodation space 210 is set by using the self-structure of the crank disc 200 to lubricate the crank disc 200 and the rotating shaft. It should be noted that there are two lubricating oil channels 220 in this embodiment. One lubricating oil channel 220 connects the central shaft hole (the rotating shaft for installing the motor) and the lubricating oil accommodation space 210, and the other lubricating oil channel 220 connects the lubricating oil accommodation space 210 and the eccentric shaft hole (the rotating shaft for installing the connecting rod). The crank disc 200 also has an oil injection hole 230, which will not be elaborated here.

[0043] This application also provides a sewing machine. The sewing machine includes a sewing machine frame device, a head device, and a chassis device. The head device is located on the upper part of the machine table of the sewing machine frame device, and the chassis device is located on the lower part of the machine table of the sewing machine frame device. The head device includes the above-mentioned oil supply mechanism of the sewing machine head. The lubrication of the head device of the sewing machine in this application is stable and the lubrication effect is good.

[0044] The chassis device of the technical solution of this application includes a third oil storage tank assembly 30. The third oil storage tank assembly 30 is connected to the gear assembly in the chassis device. The gear assembly in the chassis device includes a gear connected to the rotary hook shaft motor, and a rack shaft gear, etc. It should be noted that the lubricated parts of the third oil storage tank assembly 30 are not limited to the above gears. For example, the rotating shaft of the rack shaft is connected through an oil guiding structure, etc.

[0045] It should be noted that the head device of the sewing machine of the present application has a needle motor and a needle drive shaft. The needle motor is connected to the needle drive shaft, and the needle drive shaft cooperates with the needle bar assembly 100 and drives the needle bar assembly 100. The chassis device includes a rotary hook motor and a rotary hook shaft. The rotary hook motor is connected to the rotary hook shaft, and the rotary hook motor drives the rotary hook shaft. That is, one way of the sewing machine of the present application is that the needle and the rotary hook are driven by two independent and different motors. In this way, the head device and the chassis device are independent respectively (electrically controlled and connected, and the cooperation between the needle motor and the rotary hook motor needs to be ensured). In terms of structure, the two rotating shafts of the sewing machine in such an embodiment are greatly shortened, and the deflection deformation caused by the shortening of the rotating shaft is relatively small, that is, the transmission accuracy of the sewing machine is higher.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0048] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A sewing machine head oil supply mechanism, characterized in that, Comprising: A first fuel tank assembly (10), the first fuel tank assembly (10) includes a first fuel tank (11) and a first oil guiding structure (12), the needle bar assembly (100) includes a needle bar structure (110) and a first needle bar sleeve (120), the first needle bar sleeve (120) is matched with the sewing machine main body, the first needle bar sleeve (120) is sleeved on the circumferential outer side of the needle bar structure (110), the first needle bar sleeve (120) has a first communication hole (121) penetrating through the side wall of the first needle bar sleeve (120), and the first oil guiding structure (12) communicates the inside of the first fuel tank (11) and the first communication hole (121).

2. The sewing machine head oil supply mechanism according to claim 1, characterized in that, The inner wall of the first needle bar sleeve (120) has a first oil guiding groove (122), the first oil guiding groove (122) extends along the axial direction of the needle bar structure (110) and is communicated with the first communication hole (121).

3. The sewing machine head oil supply mechanism according to claim 2, characterized in that The first oil guiding structure (12) includes a first oil cotton, the first end of the first oil cotton is located in the first fuel tank (11), and the second end of the first oil cotton is located in the needle bar assembly (100).

4. The sewing machine head oil supply mechanism according to claim 2, characterized in that, The first fuel tank assembly (10) further includes a second oil guiding structure, the needle bar assembly (100) includes an adjustment driving part and a transmission rod (160), the transmission rod (160) is rotatably arranged on the sewing machine housing, the adjustment driving part is matched with the transmission rod (160), the transmission rod (160) is matched with the needle bar structure (110), and the second oil guiding structure is respectively communicated with the first fuel tank (11) and the transmission rod (160).

5. The sewing machine head oil supply mechanism according to claim 4, characterized in that, The first fuel tank assembly (10) further includes a third oil guiding structure, the adjustment driving part is an adjustment driving motor (130), the adjustment driving motor (130) is matched with the transmission rod (160) through a bevel gear (140), the transmission rod (160) is matched with the needle bar structure (110) through a transmission gear (150) to realize the axial adjustment of the sewing needle, and the third oil guiding structure is communicated with both the bevel gear (140) and the transmission gear (150).

6. The sewing machine head oil supply mechanism according to claim 1, characterized in that, The first fuel tank (11) is arranged at the upper part of the sewing machine housing.

7. The oil supply mechanism for the sewing machine head according to claim 1, wherein, The sewing machine head oil supply mechanism further includes a second fuel tank assembly (20), the second fuel tank assembly (20) further includes a second fuel tank and a fourth oil guiding structure, and the fourth oil guiding structure is communicated with the second fuel tank and the needle bar structure (110).

8. The sewing machine head oil supply mechanism according to claim 1, characterized in that, The crank disc (200) driving the needle bar assembly (100) has a hollow lubricating oil accommodating space (210), and the lubricating oil accommodating space (210) and the rotating shaft mounting hole have a communicated lubricating oil channel (220).

9. A sewing machine, characterized in that, The sewing machine includes a sewing machine frame device, a head device and a chassis device, the head device is located at the upper part of the machine table of the sewing machine frame device, the chassis device is located at the lower part of the machine table of the sewing machine frame device, and the head device includes the sewing machine head oil supply mechanism according to any one of claims 1 to 8.

10. The sewing machine according to claim 9, characterized in that, The chassis device includes a third fuel tank assembly (30), and the third fuel tank assembly (30) is communicated with a gear assembly in the chassis device.

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