Clicking type intermittent oil supply device of sewing machine

Abstract

The utility model discloses a click type intermittent oil supply device of a sewing machine, and relates to the field of sewing machines, the click type intermittent oil supply device comprises an oil box, an oil pump and a rotating shuttle which are communicated in sequence, the click type intermittent oil supply device further comprises a power piece which drives the oil pump to do intermittent motion in a click mode, the valve core is mounted in the pump body; the bottom of the valve element is matched with the interior of the pump body to form an abdominal cavity, the abdominal cavity is communicated with the oil inlet and the oil outlet, and a first non-return assembly used for preventing oil in the abdominal cavity from flowing back to the oil inlet is arranged in the oil inlet or the pipeline. A second non-return assembly used for preventing oil from flowing back to the abdominal cavity is arranged in the oil outlet or the pipeline. The oil control device has the advantages of being accurate in oil control and good in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine field, concretely relates to a click type intermittent oil supply device of sewing machine. BACKGROUND

[0002] The oil supply mode of the sewing machine in prior art is that the motor drives the oil pump to supply oil, so the speed of the main shaft relates to the oil supply size of the oil pump, thereby the size of the rotating shuttle oil is influenced, it is very unstable, and the practicality is poor INVENTION CONTENTS

[0003] In order to overcome the insufficient of the background art, the utility model provides a click type intermittent oil supply device of sewing machine which is accurate in oil control and good in practicality.

[0004] The utility model employs the technical scheme: a click type intermittent oil supply device of sewing machine, including oil box, oil pump and rotating shuttle that communicate sequentially, still including power part that click drive oil pump and carry out intermittent motion, the oil pump includes:

[0005] Pump body, its both sides are equipped with oil inlet and oil outlet,

[0006] Valve core, it is installed in the pump body,

[0007] The bottom of valve core and pump body inside cooperation form abdominal cavity, and the abdominal cavity is communicated with oil inlet and oil outlet respectively, the first check assembly for preventing the oil liquid reverse flow back to oil inlet at abdominal cavity is equipped in oil inlet or pipeline, the second check assembly for preventing the oil liquid reverse flow back to abdominal cavity is equipped in oil outlet or pipeline.

[0008] The pump body is installed with oil inlet nozzle at corresponding oil inlet and is installed with oil outlet nozzle at corresponding oil outlet, there is first cavity between oil inlet nozzle and oil inlet, there is second cavity between oil outlet nozzle and oil outlet.

[0009] A plurality of first notches are processed at oil inlet, the first check assembly adopts the first baffle arranged in first cavity, the first baffle has the first state of sticking to the end face of oil inlet nozzle and blocking oil inlet nozzle and the second state of sticking to the end face of oil inlet and not blocking oil inlet in moving in first cavity.

[0010] The second check assembly adopts the second baffle arranged in second cavity, the end face of oil outlet nozzle is processed with a plurality of second notches, the second baffle has the first state of sticking to the end face of oil outlet and blocking oil outlet and the second state of sticking to the end face of oil outlet nozzle and not blocking oil outlet nozzle in moving in second cavity.

[0011] The first check valve assembly comprises a first elastic member arranged in the first cavity and a first elastic ball blocking the oil inlet;

[0012] The second check valve assembly comprises a second elastic member arranged in the second cavity and a second elastic ball blocking the oil outlet.

[0013] The third elastic member is arranged between the pump body and the valve core and elastically contacts both of them.

[0014] The valve core is a plunger, the pump body is provided with a pressing plate, the upper end of the plunger is exposed outside after penetrating through the pressing plate, the plunger is circumferentially provided with an annular step matched with the pressing plate, and the pump body is internally provided with a guide sleeve matched with the plunger in sliding.

[0015] The pump body is provided with a rubber pad covering the plunger and pressed by the pressing plate.

[0016] The valve core is a diaphragm, which is sealingly and fixedly arranged in the pump body.

[0017] The power member is an electromagnet or a pneumatic cylinder or an oil cylinder.

[0018] The beneficial effects of the utility model are that the technical scheme is through click to drive the oil pump, click to control the oil amount and the stroke size, so that the oil amount and the time can be controlled through the program, so that the purpose of accurately controlling the shuttle oil amount is achieved, and the advantages of accurate oil control and good practicability are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the click type intermittent oil supply device of the sewing machine.

[0020] Figure 2 It is a sectional view of the first embodiment.

[0021] Figure 3 It is a split schematic view of the first embodiment.

[0022] Figure 4 It is a sectional view of the second embodiment.

[0023] Figure 5 It is a split schematic view of the second embodiment. DETAILED DESCRIPTION

[0024] The utility model embodiments will be further described below with reference to the drawings:

[0025] As shown in the drawings, a click type intermittent oil supply device of a sewing machine comprises an oil box 1, an oil pump and a shuttle 2 which are sequentially communicated, and a power member 25 for click driving the oil pump to intermittently move, and the oil pump comprises:

[0026] Pump body 3, both sides are provided with oil inlet 5 and oil outlet 6;

[0027] Valve core, installed in the pump body 3;

[0028] The bottom of the valve core cooperates with the inside of the pump body 3 to form an abdominal cavity 7, and the abdominal cavity 7 is communicated with the oil inlet 5 and the oil outlet 6 respectively, and the first check assembly for preventing the oil from flowing back to the oil inlet 5 at the abdominal cavity 7 is arranged in the oil inlet 5 or the pipeline, and the second check assembly for preventing the oil from flowing back to the abdominal cavity 7 is arranged in the oil outlet 6 or the pipeline; the technical scheme is to control the oil amount by clicking the push oil pump, the opening and closing time and the stroke size, so that the oil amount and the time can be controlled by the program, so as to achieve the purpose of accurately controlling the shuttle oil amount, and the oil control is accurate and practical.

[0029] The valve core has two schemes, one is to adopt a plunger, and the other is to adopt a diaphragm (not shown), and a third elastic member 16 for elastically abutting the pump body 3 and the plunger 4 is arranged between the pump body 3 and the plunger 4, and the third elastic member adopts a spring, which provides elastic pre-tightening force for upward resetting of the valve core.

[0030] The pipeline can adopt a hose, and the first check assembly and the second check assembly are arranged in the hose, so that the purpose of one-way flow of the oil can be achieved.

[0031] The valve core adopts the plunger, the pump body 3 is internally provided with a guide sleeve 23 in sliding cooperation with the plunger 4, so as to ensure the sliding accuracy of the plunger; the pump body 3 is provided with a pressing plate 17, the upper end of the plunger 4 passes through the pressing plate 17 and is exposed outside, and the plunger 4 is circumferentially provided with an annular step 18 in cooperation with the pressing plate 17, so that the pressing plate can limit the movement range of the plunger and improve the working stability.

[0032] The pump body 3 is provided with a rubber pad 24 covering the plunger 4 and being pressed by the pressing plate 17, which plays a sealing role and prevents oil leakage and air leakage.

[0033] The valve core adopts the diaphragm, which is fixedly and sealingly installed in the pump body, and the diaphragm can be fixed on the pump body by bolts, and the sealing mode can adopt a sealing ring, which can prevent oil leakage.

[0034] The pump body is provided with an oil inlet nozzle 9 at the position corresponding to the oil inlet 5 and an oil outlet nozzle 12 at the position corresponding to the oil outlet 6, and a first cavity 11 exists between the oil inlet nozzle 9 and the oil inlet 5, and a second cavity 15 exists between the oil outlet nozzle 12 and the oil outlet 6.

[0035] The first check assembly and the second check assembly in the embodiment have two embodiments;

[0036] Embodiment one: as Figure 2 and Figure 3As shown, the oil inlet 5 is provided with a plurality of first notches 8, the first check valve assembly is provided with a first flapper 10 arranged in the first cavity 11, the first flapper 10 has a first state of being attached to the end face of the oil inlet 5 and not blocking the oil inlet 5, and a second state of being attached to the end face of the oil nozzle 9 and blocking the oil nozzle 9, when the plunger is in piston motion, the abdominal cavity can suck oil from the oil inlet, and the first check valve assembly can prevent the oil from flowing back to the oil tank.

[0037] The first flapper 10 is a round plate, the outer diameter of the first flapper 10 is larger than the diameter of the oil inlet channel of the oil nozzle 9, when the oil in the oil tank enters the pump body from the oil nozzle, the oil can push away the first flapper and then enter the abdominal cavity through the first notches, when the pump body discharges oil, the oil can come out of the oil inlet and then press the first flapper to block the oil nozzle, thereby preventing backflow.

[0038] The second check valve assembly is provided with a second flapper 13 arranged in the second cavity 15, the end face of the oil nozzle 12 is provided with a plurality of second notches 14, the second flapper 13 has a first state of being attached to the end face of the oil outlet 6 and blocking the oil outlet 6, and a second state of being attached to the end face of the oil nozzle 12 and not blocking the oil nozzle 12, when the plunger is in piston motion, the second check valve assembly can prevent the oil from flowing back to the abdominal cavity.

[0039] The second flapper 13 is a round plate, the outer diameter of the second flapper 13 is larger than the diameter of the oil outlet 6; when the oil enters the oil nozzle from the pump body, the oil can push away the second flapper and then enter the oil nozzle through the second notches, when the pump body sucks oil, the oil in the oil nozzle can come out of the oil nozzle and then press the second flapper to block the oil outlet, thereby preventing backflow.

[0040] Embodiment two:

[0041] The first check valve assembly includes a first elastic member 19 arranged in the first cavity and a first elastic ball 20 blocked by the first elastic member 19, the first elastic member is a spring which provides elastic pre-tightening force for the first elastic ball to always block the oil nozzle, when the plunger is in piston motion, the abdominal cavity can suck oil from the oil inlet, and the first check valve assembly can prevent the oil from flowing back to the oil tank; the oil in the oil tank enters the pump body from the oil nozzle, the oil can push away the first elastic ball and then enter the abdominal cavity through the oil inlet, when the pump body discharges oil, the first elastic member provides elastic pre-tightening force to make the first elastic ball block the oil nozzle, thereby preventing backflow.

[0042] The second check valve assembly comprises a second elastic member 21 arranged in the second cavity and a second elastic ball 22 blocked against the oil outlet by the second elastic member 21, and when the oil liquid enters the oil outlet nozzle, the oil liquid will push away the second elastic ball to enter the oil outlet nozzle, and when the pump body sucks the oil liquid, the second elastic member provides elastic pre-tightening force to make the second elastic ball block the oil outlet, thereby preventing backflow.

[0043] The oil pump further comprises a power member 25 for driving the plunger 4 to move, the power member is an electromagnet or a pneumatic cylinder or an oil cylinder, the plunger is driven to move linearly by the power member, and the oil outlet amount is controlled by the moving distance of the plunger.

[0044] In the description of the present application, it should be pointed out that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0046] Skilled persons should know that although the present application has been described according to the above specific embodiments, the application idea of the present application is not limited to this application, any modification using the application idea of the present application will be included in the protection scope of the present patent.

Claims

1. A click-type intermittent oil supply device for a sewing machine, comprising an oil box (1), an oil pump, and a rotary hook (2) connected sequentially by pipelines, characterized in that: It also includes a power component (25) that drives the oil pump to move intermittently, the oil pump comprising: The pump body (3) has an oil inlet (5) and an oil outlet (6) on both sides. The valve core is installed inside the pump body (3); The bottom of the valve core cooperates with the inside of the pump body (3) to form a cavity (7), and the cavity (7) is connected to the oil inlet (5) and the oil outlet (6) respectively. The oil inlet (5) or the pipeline is provided with a first check valve assembly to prevent the oil in the cavity (7) from flowing back to the oil inlet (5), and the oil outlet (6) or the pipeline is provided with a second check valve assembly to prevent the oil from flowing back to the cavity (7).

2. The click-type intermittent oil supply device for a sewing machine according to claim 1, characterized in that: The pump body is equipped with an oil inlet (9) at the corresponding oil inlet (5) and an oil outlet (12) at the corresponding oil outlet (6). There is a first cavity (11) between the oil inlet (9) and the oil inlet (5), and there is a second cavity (15) between the oil outlet (12) and the oil outlet (6).

3. The click-type intermittent oil supply device for a sewing machine according to claim 2, characterized in that: A plurality of first grooves (8) are machined at the oil inlet (5). The first check valve assembly adopts a first baffle (10) set in the first cavity (11). The first baffle (10) moves in the first cavity and has a first state of being attached to the end face of the oil inlet (9) and blocking the oil inlet (9), and a second state of being attached to the end face of the oil inlet (5) and not blocking the oil inlet (5).

4. The click-type intermittent oil supply device for a sewing machine according to claim 2, characterized in that: The second check valve assembly uses a second baffle (13) disposed in the second cavity (15). The end face of the oil outlet (12) is machined with several second grooves (14). The second baffle (13) moves in the second cavity and has a first state of adhering to the end face of the oil outlet (6) and blocking the oil outlet (6), and a second state of adhering to the end face of the oil outlet (12) and not blocking the oil outlet (12).

5. The click-type intermittent oil supply device for a sewing machine according to claim 2, characterized in that: The first check valve assembly includes a first elastic element (19) disposed in the first cavity and a first ball (20) that is blocked by the first elastic element (19) from the oil inlet. The second check valve assembly includes a second elastic element (21) disposed in the second cavity and a second ball (22) that is blocked by the second elastic element (21) at the oil outlet.

6. The click-type intermittent oil supply device for a sewing machine according to claim 1, characterized in that: A third elastic element (16) is provided between the pump body (3) and the valve core to elastically abut against each other.

7. The click-type intermittent oil supply device for a sewing machine according to claim 6, characterized in that: The valve core is a plunger, and a pressure plate (17) is installed on the pump body (3). The upper end of the plunger (4) passes through the pressure plate (17) and is exposed. The plunger (4) is provided with an annular step (18) that cooperates with the pressure plate (17) in the circumference. The pump body (3) is provided with a guide sleeve (23) that slides and cooperates with the plunger (4).

8. The click-type intermittent oil supply device for a sewing machine according to claim 7, characterized in that: The pump body (3) is provided with a rubber pad (24) covering the plunger (4) and pressed by the pressure plate (17).

9. The click-type intermittent oil supply device for a sewing machine according to claim 6, characterized in that: The valve core is a diaphragm, which is sealed and fixedly installed in the pump body.

10. The click-type intermittent oil supply device for a sewing machine according to claim 1, characterized in that: The power component (25) is an electromagnet, a cylinder, or a hydraulic cylinder.

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