Needle feeding and thread picking mechanism and flat seaming machine

Abstract

The utility model discloses a feeding needle take-up mechanism and a flat seaming machine, the feeding needle take-up mechanism comprises a feeding needle swing pin and a feeding needle swing connecting rod, one end of the feeding needle swing connecting rod is provided with a rotating sleeve, and the rotating sleeve is rotatably sleeved on the feeding needle swing pin; a first grease groove is formed in the outer side face of the needle feeding swing pin and used for storing lubricating grease to lubricate the needle feeding swing pin and the needle feeding swing connecting rod. Original oil lubrication is changed into grease lubrication, sewing material pollution caused by oil leakage of lubricating oil in the sewing process can be avoided, abrasion caused by reduction of the amount of the lubricating oil can be avoided, and the sewing quality and the lubrication effect are both improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a needle feeding and thread picking mechanism and a stretch sewing machine. Background Art

[0002] At present, the stitches of the interlock sewing machine are chain stitches, which are mostly used for collar rolling, hemming, hemming, interlock seams, splicing seams and trims of knitted garments. The lubrication method of interlock sewing machines is mostly lubricating oil. The function of lubricating oil is to form a thin film between mechanical parts, reduce friction, and improve the operating efficiency and service life of the equipment.

[0003] However, there are still some problems with traditional lubricating oil lubrication. For example, due to the structural limitations of the interlock sewing machine, lubricating oil is easy to leak out during high-speed operation, which not only wastes lubricating oil, but also may contaminate the sewn fabric and affect the sewing quality. Although the existing technology solves the problem of easy oil leakage by reducing the amount of lubricating oil or adding oil seals, reducing the amount of oil can reduce the risk and amount of oil leakage in the short term, but long-term use may lead to insufficient lubrication and sintering, and the risk of wear is high. In addition, the oil seal is also prone to wear, and oil leakage will still occur during long-term use. Therefore, how to balance improving sewing quality and lubrication effect is a technical problem that technicians in this field need to solve. Utility Model Content

[0004] The utility model aims to provide a needle feeding and thread picking mechanism and a stretch sewing machine, which solves the technical problem that the sewing quality and lubrication effect of the existing sewing machines cannot be improved at the same time.

[0005] To achieve the above-mentioned purpose, the utility model provides a needle feeding and thread picking mechanism, including a needle feeding swing pin and a needle feeding swing connecting rod, a rotating sleeve is provided at one end of the needle feeding swing connecting rod, and the rotating sleeve can be rotatably sleeved on the needle feeding swing pin; a first grease groove is provided on the outer side surface of the needle feeding swing pin, and the first grease groove is used to store grease to provide lubrication for the needle feeding swing pin and the needle feeding swing connecting rod.

[0006] Preferably, it also includes a needle feeding swing frame, one end of which is provided with a transfer shaft, which radially passes through the rotating sleeve and is rotatably connected to the needle feeding swing pin; a second grease groove is provided on the outer side surface of the transfer shaft, and the second grease groove is used to store grease to provide lubrication for the needle feeding swing pin and the needle feeding swing frame.

[0007] Preferably, a second grease outlet hole extending in its radial direction is provided at the bottom of the second grease groove, and a second grease injection hole extending in its axial direction is provided at the center of the adapter shaft, and the second grease injection hole is communicated with the second grease outlet hole.

[0008] Preferably, the second grease outlet hole is coaxially arranged with the adapter shaft.

[0009] Preferably, the diameter of the second grease injection hole is larger than the diameter of the second grease outlet hole.

[0010] Preferably, it also includes a needle feeding frame and a supporting sleeve fixed to the upper section of the casing, the needle feeding swing frame includes a swing rod rotatably arranged in the supporting sleeve, one end of the swing rod is fixedly connected to the needle feeding frame; at least one third grease groove is provided on the outer side surface of the swing rod, and the third grease groove is used to store grease to provide lubrication for the swing rod and the supporting sleeve.

[0011] Preferably, two third grease grooves are provided on the outer side surface of the swing rod, and the two third grease grooves are respectively located at two ends of the support sleeve.

[0012] Preferably, a third grease outlet hole extending in the radial direction is provided at the bottom of each third grease groove, and a third grease injection hole extending in the axial direction is provided at the center of the swing rod, and the third grease injection hole is communicated with the third grease outlet hole.

[0013] Preferably, the diameter of the third grease injection hole is the same as the diameter of the third grease outlet hole.

[0014] The utility model also provides a sewing machine, comprising an upper casing section and the above-mentioned needle feeding and thread taking-up mechanism, wherein the needle feeding and thread taking-up mechanism is arranged in the upper casing section.

[0015] Compared with the background technology, the utility model optimizes the structure of the needle feeding swing pin, and a first grease groove is provided on the outer side surface of the needle feeding swing pin for storing grease; a rotating sleeve is provided at one end of the needle feeding swing connecting rod, and the rotating sleeve can be rotatably mounted on the needle feeding swing pin, so that the grease in the first grease groove provides lubrication for the needle feeding swing pin and the needle feeding swing connecting rod; the utility model changes the original oil lubrication into grease lubrication, which can avoid the leakage of lubricating oil and the contamination of sewing materials during sewing, and can also avoid wear caused by the reduction of lubricating oil amount, thereby achieving both improvement of sewing quality and lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 An axonometric diagram of the needle feeding and thread picking mechanism provided in an embodiment of the utility model;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 for Figure 1 Side view of

[0020] Figure 4 for Figure 1 Structural diagram of the middle feed needle swing pin;

[0021] Figure 5 for Figure 1 Structural diagram of the middle feed needle swing frame.

[0022] The reference numerals are as follows:

[0023] Needle feeding swing pin 1, needle feeding swing connecting rod 2, needle feeding swing frame 3, needle feeding frame 4, housing upper section 5, support sleeve 6 and needle feeding 7;

[0024] Rotating sleeve 21;

[0025] A first grease groove 11, a radial through hole 12 and an axial through hole 13;

[0026] A transfer shaft 31, a swing rod 32 and a connecting rod 33;

[0027] A second grease groove 311, a second grease outlet hole 312 and a second grease injection hole 313;

[0028] A third grease groove 321 , a third grease outlet hole 322 and a third grease injection hole 323 . DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The utility model embodiment discloses a needle feeding and thread picking mechanism, as shown in the attached Figures 1 to 3 As shown, it includes a needle feeding swing pin 1 and a needle feeding swing connecting rod 2. A rotating sleeve 21 is provided at one end of the needle feeding swing connecting rod 2. The rotating sleeve 21 can be rotatably sleeved on the needle feeding swing pin 1 to make the needle feeding swing connecting rod 2 rotate around the central axis of the needle feeding swing pin 1.

[0032] As attached Figure 4As shown, the outer side of the needle feeding swing pin 1 is provided with a first grease groove 11, which is used to store grease and provide lubrication for the needle feeding swing pin 1 and the needle feeding swing connecting rod 2. The first grease groove 11 is specifically an annular groove, which is opposite to the inner side of the rotating sleeve 21, so that the grease in the first grease groove 11 flows into the annular gap between the needle feeding swing pin 1 and the needle feeding swing connecting rod 2 to achieve lubrication. The needle feeding swing pin 1 is provided with a radial through hole 12, which penetrates along the radial direction of the needle feeding swing pin 1, and the adapter shaft 31 of the needle feeding swing frame 3 is inserted in the radial through hole 12, and the radial through hole 12 penetrates the first grease groove 11 along the radial direction of the needle feeding swing pin 1. The center of the needle feeding swing pin 1 is provided with an axial through hole 13, which penetrates along the axial direction of the needle feeding swing pin 1. The axial through hole 13 can be used as a grease injection hole, and the grease injected from one end of the axial through hole 13 flows into the first grease groove 11 through the radial through hole 12 to replenish the first grease groove 11 with grease.

[0033] The utility model optimizes the structure of the needle feeding swing pin 1, and provides a first grease groove 11 on the outer side surface of the needle feeding swing pin 1 to provide lubrication for the needle feeding swing pin 1 and the needle feeding swing connecting rod 2; the utility model changes the original oil lubrication into grease lubrication, which can avoid the contamination of sewing materials caused by oil leakage of lubricating oil during sewing, and can also avoid wear caused by the reduction of lubricating oil amount, so as to achieve both improvement of sewing quality and lubrication effect.

[0034] As attached Figure 5 As shown, the needle feeding and thread picking mechanism also includes a needle feeding swing frame 3, one end of which is provided with a transfer shaft 31, the transfer shaft 31 radially passes through the rotating sleeve 21 and is rotatably connected to the needle feeding swing pin 1, and the central axis of the transfer shaft 31 is perpendicular to the central axis of the rotating sleeve 21, so that the transfer shaft 31 moves relative to the rotating sleeve 21 along the radial direction of the rotating sleeve 21.

[0035] As attached Figure 5 As shown, the outer side of the adapter shaft 31 is provided with a second grease groove 311, which is used to store grease to provide lubrication for the needle feeding swing pin 1 and the needle feeding swing frame 3. The second grease groove 311 is an annular groove, which is opposite to the radial through hole 12 of the needle feeding swing pin 1.

[0036] As attached Figure 5 As shown, the bottom of the second grease groove 311 is provided with a second grease outlet hole 312 extending in the radial direction thereof, and the center of the adapter shaft 31 is provided with a second grease injection hole 313 extending in the axial direction thereof, and the second grease injection hole 313 is connected with the second grease outlet hole 312, and the supplementary grease flows from the second grease injection hole 313 to the second grease outlet hole 312 to supplement the second grease groove 311 with grease. The aperture of the second grease injection hole 313 is larger than the aperture of the second grease outlet hole 312, which can speed up the grease injection speed and reduce the grease outlet speed to a certain extent, thereby avoiding the influence of production efficiency due to the grease injection hole being too small, and avoiding the influence of sewing quality due to the contamination of sewing materials by the grease outlet hole being too large.

[0037] The second grease outlet hole 312 is coaxially arranged with the transfer shaft 31 and penetrates the transfer shaft 31 along the axial direction, thereby ensuring that the wall thickness of the transfer shaft 31 is uniform and reducing the risk of wear of the transfer shaft 31 .

[0038] As attached Figures 1 to 3 As shown, the needle feeding and thread picking mechanism also includes a needle feeding frame 4 and a support sleeve 6 fixedly arranged on the upper section 5 of the housing. The needle feeding swing frame 3 includes a swing rod 32 rotatably arranged in the support sleeve 6. The swing rod 32 is parallel to the adapter shaft 31, and the two are fixedly connected by a connecting rod 33. Among them, the connecting rod 33 is perpendicular to the swing rod 32 and the adapter rod respectively. One end of the swing rod 32 is fixedly connected to the needle feeding frame 4, and is used to drive the feeding needle 7 to move synchronously through the needle feeding frame 4.

[0039] As attached Figure 5 As shown, at least one third grease groove 321 is provided on the outer side surface of the swing rod 32 , and the third grease groove 321 is used to store grease to provide lubrication for the swing rod 32 and the support sleeve 6 .

[0040] Two third grease grooves 321 are provided on the outer side of the swing rod 32, and the two third grease grooves 321 are respectively located at the two ends of the support sleeve 6 to ensure sufficient lubrication between the swing rod 32 and the support sleeve 6. Of course, the number of the third grease grooves 321 is not limited thereto, and can be adjusted according to the contact length between the swing rod 32 and the support sleeve 6 bracket. The third grease groove 321 is specifically an annular groove.

[0041] As attached Figure 5 As shown, the bottom of each third grease groove 321 is provided with a third grease outlet hole 322 extending in the radial direction thereof, and the center of the swing rod 32 is provided with a third grease injection hole 323 extending in the axial direction thereof, and the third grease injection hole 323 is connected with the third grease outlet hole 322, and the supplemented grease flows from the third grease injection hole 323 to each third grease outlet hole 322, and the grease is supplemented to each third grease groove 321 at the same time. The aperture of the third grease injection hole 323 is larger than the aperture of the third grease outlet hole 322, which can not only avoid the production efficiency being affected by the grease injection hole being too small, but also avoid the grease outlet hole being too large to pollute the sewing material and affect the sewing quality.

[0042] The utility model also discloses a sewing machine, comprising an upper casing section 5 and a needle feeding and thread taking-up mechanism, wherein the needle feeding and thread taking-up mechanism is arranged in the upper casing section 5 and has the same beneficial effects.

[0043] 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.

[0044] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A needle feeding and thread taking-up mechanism, characterized in that: The invention comprises a needle feeding swing pin (1) and a needle feeding swing connecting rod (2), wherein a rotating sleeve (21) is provided at one end of the needle feeding swing connecting rod (2), and the rotating sleeve (21) can be rotatably sleeved on the needle feeding swing pin (1); a first grease groove (11) is provided on the outer side surface of the needle feeding swing pin (1), and the first grease groove (11) is used to store grease to provide lubrication for the needle feeding swing pin (1) and the needle feeding swing connecting rod (2).

2. The needle feeding and thread taking-up mechanism according to claim 1, characterized in that: It also includes a needle feeding swing frame (3), one end of which is provided with a transfer shaft (31), the transfer shaft (31) radially passes through the rotating sleeve (21) and is rotatably connected to the needle feeding swing pin (1); the outer side surface of the transfer shaft (31) is provided with a second grease groove (311), the second grease groove (311) is used to store grease to provide lubrication for the needle feeding swing pin (1) and the needle feeding swing frame (3).

3. The needle feeding and thread taking-up mechanism according to claim 2, characterized in that: A second grease outlet hole (312) extending in the radial direction is provided at the bottom of the second grease groove (311), and a second grease injection hole (313) extending in the axial direction is provided at the center of the adapter shaft (31), and the second grease injection hole (313) is communicated with the second grease outlet hole (312).

4. The needle feeding and thread taking-up mechanism according to claim 3, characterized in that: The second grease outlet hole (312) is coaxially arranged with the adapter shaft (31).

5. The needle feeding and thread taking-up mechanism according to claim 3, characterized in that: The diameter of the second grease injection hole (313) is larger than the diameter of the second grease outlet hole (312).

6. The needle feeding and thread taking-up mechanism according to any one of claims 2 to 5, characterized in that: It also comprises a needle feeding frame (4) and a supporting sleeve (6) fixedly arranged on the upper section (5) of the casing, the needle feeding swing frame (3) comprising a swing rod (32) rotatably arranged in the supporting sleeve (6), one end of the swing rod (32) being fixedly connected to the needle feeding frame (4); at least one third grease groove (321) is provided on the outer side surface of the swing rod (32), and the third grease groove (321) is used to store grease to provide lubrication for the swing rod (32) and the supporting sleeve (6).

7. The needle feeding and thread taking-up mechanism according to claim 6, characterized in that: Two third grease grooves (321) are provided on the outer side surface of the swing rod (32), and the two third grease grooves (321) are respectively located at two ends of the support sleeve (6).

8. The needle feeding and thread taking-up mechanism according to claim 6, characterized in that: A third grease outlet hole (322) extending in the radial direction is provided at the bottom of each third grease groove (321), and a third grease injection hole (323) extending in the axial direction is provided at the center of the swing rod (32), and the third grease injection hole (323) is communicated with the third grease outlet hole (322).

9. The needle feeding and thread taking-up mechanism according to claim 8, characterized in that: The diameter of the third grease injection hole (323) is the same as the diameter of the third grease outlet hole (322).

10. A flat seam sewing machine, characterized in that: It comprises an upper casing section (5) and the needle feeding and thread picking mechanism according to any one of claims 1 to 9, wherein the needle feeding and thread picking mechanism is arranged in the upper casing section (5).

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