WO2024077689A1

WO2024077689A1 - Rotating shuttle and oil pump matching operation mechanism for sewing machine, and sewing machine

Info

Publication number: WO2024077689A1
Application number: PCT/CN2022/130188
Authority: WO
Inventors: 戴其均
Original assignee: 浙江美机缝纫机有限公司
Priority date: 2022-10-13
Filing date: 2022-11-07
Publication date: 2024-04-18
Also published as: CN115595741A

Abstract

Disclosed in the present invention are a rotating shuttle and oil pump matching operation mechanism for a sewing machine. The rotating shuttle and oil pump matching operation mechanism comprises an electric motor, a lower shaft, a rotating shuttle, a vertical shaft, a gear pair assembly and an oil pump, wherein the electric motor is mounted on a sewing machine casing and is in transmission connection to the lower shaft by means of an electric motor shaft of the electric motor, the lower shaft is connected to a sewing machine bottom plate, the oil pump is fixedly connected to the sewing machine bottom plate and is in fit transmission connection to the vertical shaft, the rotating shuttle is arranged at an end portion of the lower shaft, meshing transmission is formed between the lower shaft and the vertical shaft by means of the gear pair assembly, the rotating shuttle and the oil pump operate synchronously by means of the electric motor, and the oil pump lubricates the rotating shuttle by means of an oil pipe. The rotating shuttle and oil pump matching operation mechanism provided in the present invention operates by means of independent control of electric control, and an independent transmission mechanism designed is convenient to mount and has strong controllability, such that stitches can be better controlled, the stability is good, and the accuracy of thread hooking time during operation of the rotating shuttle is high. Further disclosed in the present invention is a sewing machine using the mechanism.

Description

A sewing machine hook, oil pump coordinated operation mechanism and sewing machine

Technical Field

The invention relates to the technical field of sewing machines, and in particular to a sewing machine rotary hook, an oil pump coordinated operating mechanism and a sewing machine.

Background technique

As an important component of a sewing machine, the rotary shuttle plays the role of hooking the thread and guiding the sewing thread to form stitches. The working condition of the rotary shuttle directly affects the working performance of the sewing machine. Therefore, the rotary shuttle needs to be lubricated during work to ensure that the sewing machine is in good working condition.

Most of the existing sewing machines supply oil to the rotary hook through an oil pump. When the rotary hook is in action, the oil pump runs synchronously to supply oil and lubrication to it uninterruptedly. The control and operation structure of the existing rotary hook and oil pump is not independently controlled and the structure is relatively complex. Not only is the connection and installation troublesome, but the synchronous lubrication is not timely, which leads to reduced hooking accuracy of the rotary hook and poor stitch stability. Therefore, improvement is needed.

Summary of the invention

The purpose of the present invention is to solve the problems raised in the above background technology and to provide a sewing machine hook, an oil pump cooperative operation mechanism and a sewing machine.

In order to solve the above technical problems, the technical solution of the present invention is: a sewing machine hook and oil pump cooperative operation mechanism, including a motor, a lower shaft, a hook, a vertical shaft, a gear pair assembly, and an oil pump. The motor is installed on the sewing machine casing and is connected to the lower shaft through its motor shaft for transmission. The lower shaft is connected to the sewing machine bottom plate. The oil pump is fixedly connected to the sewing machine bottom plate and is connected to the vertical shaft for transmission. The hook is arranged at the end of the lower shaft. The lower shaft and the vertical shaft form a meshing transmission through the gear pair assembly. The hook and the oil pump are operated synchronously by the motor, and the oil pump lubricates the hook through the oil pipe.

In the above-mentioned sewing machine hook and oil pump cooperative operation mechanism, the motor shaft of the motor and the lower shaft are connected by a pulley assembly, and the pulley assembly includes a motor shaft pulley, a belt, and a lower shaft pulley. The motor shaft pulley is mounted and fixed on the motor shaft, and the lower shaft pulley is mounted and fixed on the end of the lower shaft. The belt connects the motor shaft pulley and the lower shaft pulley for transmission connection.

In the above-mentioned sewing machine hook and oil pump cooperative operation mechanism, the two ends of the lower shaft are respectively provided with a lower shaft front sleeve and a lower shaft rear sleeve, the lower shaft front sleeve and the lower shaft rear sleeve are fixedly connected to the sewing machine bottom plate, and the lower shaft pulley is against the end face of the lower shaft rear sleeve.

In the above-mentioned sewing machine hook and oil pump cooperative operation mechanism, the gear pair assembly includes a lower shaft gear and a vertical shaft gear. The lower shaft gear is fixedly installed at the end of the lower shaft, and the vertical shaft gear is installed and fixed on the vertical shaft and meshes with the lower shaft gear for transmission.

In the above-mentioned sewing machine hook and oil pump cooperative operation mechanism, a limit ring is provided on the vertical shaft.

The invention also discloses a sewing machine, comprising a casing, a bottom plate, and the above-mentioned sewing machine rotary hook and oil pump cooperative operation mechanism, wherein the rotary hook and oil pump cooperative operation mechanism are installed on the casing and the bottom plate.

In the above-mentioned sewing machine, a lever is provided in the casing, and the motor shaft of the motor in the rotary hook, oil pump and operating mechanism passes through the lever for connection.

The beneficial effects of the present invention are:

The rotary hook and oil pump provided by the present invention cooperate with the operating mechanism and operate independently through electric control. The designed independent transmission mechanism is easy to install and has strong controllability, and can better control the stitch stability and the high accuracy of the rotary hook thread hooking time.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a structural diagram of the present invention;

FIG2 is an exploded view of the motor crank and the swing member in the present invention;

FIG. 3 is a perspective view of a concave crank in the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; in the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

The present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Figures 1 and 2. The present invention provides a sewing machine hook and oil pump cooperative operation mechanism, which is characterized by comprising a motor 1, a lower shaft 2, a hook 3, a vertical shaft 4, a gear pair assembly 5, and an oil pump 6; the motor 1 is installed on the sewing machine housing and is transmission-connected to the lower shaft 2 through its motor shaft 1-1, and the motor shaft 1-1 of the motor 1 is transmission-connected to the lower shaft 2 through a pulley assembly, the pulley assembly comprises a motor shaft pulley 7, a belt 8, and a lower shaft pulley 9, the motor shaft pulley 7 is fixedly mounted on the motor shaft 1-1, the lower shaft pulley 9 is fixedly mounted on the end of the lower shaft 2, and the belt 8 transmission-connects the motor shaft pulley 7 with the lower shaft pulley 9.

The two ends of the lower shaft 2 are respectively provided with a lower shaft front sleeve 10 and a lower shaft rear sleeve 11, which are fixedly connected to the sewing machine bottom plate, and the lower shaft 2 is rotationally connected to the sewing machine bottom plate through the lower shaft front and rear sleeves; the oil pump 6 is fixedly connected to the sewing machine bottom plate and is matched with the vertical shaft 4 for transmission connection, and a limit ring 14 for positioning connection is provided on the vertical shaft 4. The lower shaft 2 and the vertical shaft 4 are meshed through a gear pair assembly 5 to form a meshing transmission, and the gear pair assembly 5 includes a lower shaft gear 12 and a vertical shaft gear 13. The lower shaft gear 12 is fixedly installed at the end of the lower shaft 2, and the vertical shaft gear 13 is fixedly installed on the vertical shaft 4 and meshes with the lower shaft gear 12 for transmission; the rotary hook 3 and the lower shaft gear 12 are respectively arranged at the two ends of the lower shaft 2.

When the motor is driven, the lower shaft is driven to rotate through its motor shaft and pulley assembly, and the lower shaft drives the rotary hook to work. At the same time, the lower shaft drives the oil pump to work through the gear subassembly 5 and the vertical shaft rotation, so that the motor independently controls the rotary hook 3 and the oil pump 6 to work synchronously. The oil pump 6 lubricates the rotary hook 3 through the oil pipe. The connection between the oil pump 6 and the rotary hook 3 adopts the existing technology, so it will not be elaborated here.

Furthermore, the lower shaft pulley 9 abuts against the end surface of the lower shaft rear sleeve 11, which can prevent the lower shaft from moving left and right.

As shown in FIG3 , the present invention further provides a sewing machine, comprising a casing 15 and a base plate 16, comprising the above-mentioned sewing machine hook and oil pump cooperative operating mechanism, wherein the hook and oil pump cooperative operating mechanism are installed on the casing and the base plate; wherein a bracket 17 is further provided in the casing 15, and the motor shaft 1-1 of the motor 1 in the hook and oil pump cooperative operating mechanism is connected through the bracket 17, thereby ensuring the stability of the motor shaft and preventing deformation.

The above is a detailed introduction to a sewing machine hook, an oil pump cooperative operating mechanism and a sewing machine provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the technical solution disclosed by the present invention. At the same time, for general technical users in this field, according to the idea of the present invention, there will be changes in the specific implementation mode and the scope of application. In summary, the content of this specification should not be understood as a limitation of the present invention.

Claims

A sewing machine rotary hook and oil pump cooperative operation mechanism, characterized in that it comprises a motor (1), a lower shaft (2), a rotary hook (3), a vertical shaft (4), a gear pair assembly (5), and an oil pump (6); the motor (1) is mounted on a sewing machine housing and is connected to the lower shaft (2) through its motor shaft (1-1); the lower shaft (2) is connected to a sewing machine bottom plate; the oil pump (6) is fixedly connected to the sewing machine bottom plate and is connected to the vertical shaft (4) through a cooperative transmission; the rotary hook (3) is arranged at the end of the lower shaft (2); the lower shaft (2) and the vertical shaft (4) form a meshing transmission through the gear pair assembly (5); the rotary hook (3) and the oil pump (6) are synchronously operated through the motor (1); and the oil pump (6) lubricates the rotary hook (3) through an oil pipe.
According to claim 1, a sewing machine hook and oil pump cooperative operation mechanism is characterized in that: the motor shaft (1-1) of the motor (1) and the lower shaft (2) are connected by a pulley assembly, the pulley assembly comprises a motor shaft pulley (7), a belt (8), and a lower shaft pulley (9), the motor shaft pulley (7) is fixed on the motor shaft (1-1), the lower shaft pulley (9) is fixed on the end of the lower shaft (2), and the belt (8) connects the motor shaft pulley (7) and the lower shaft pulley (9) by transmission.
A sewing machine hook and oil pump cooperative operation mechanism according to claim 1 or 2, characterized in that: a lower shaft front sleeve (10) and a lower shaft rear sleeve (11) are respectively provided at both ends of the lower shaft (2), the lower shaft front sleeve (10) and the lower shaft rear sleeve (11) are fixedly connected to the sewing machine bottom plate, and the end faces of the lower shaft pulley (9) and the lower shaft rear sleeve (11) are in contact with each other.
According to claim 1, a sewing machine hook and oil pump cooperative operation mechanism is characterized in that: the gear pair assembly (5) includes a lower shaft gear (12) and a vertical shaft gear (13), the lower shaft gear (12) is fixedly mounted on the end of the lower shaft (2), and the vertical shaft gear (13) is fixedly mounted on the vertical shaft (4) and meshes with the lower shaft gear (12) for transmission.
The sewing machine hook and oil pump cooperative operation mechanism according to claim 1 or 4 is characterized in that a limit ring (14) is provided on the vertical shaft (4).
A sewing machine comprises a casing (15) and a bottom plate (16), characterized in that it comprises the sewing machine rotary hook and oil pump cooperative operating mechanism as described in any one of claims 1 to 6, wherein the rotary hook and oil pump cooperative operating mechanism are installed on the casing and the bottom plate.
A sewing machine according to claim 6, characterized in that: a lever (17) is provided in the housing (15), and the motor shaft (1-1) of the motor (1) in the rotary hook and the oil pump cooperative operating mechanism passes through the lever (17) for connection.