A device for controlling the amount of oil in a rotary hook

Abstract

The utility model provides a kind of oil quantity control device of rotating shuttle, belong to sewing equipment technical field.Oil quantity control device includes cylinder, and the passage that is passed through cylinder is set up on cylinder, and adjustable column is provided in passage, and adjustable column has intercommunication, and control device further includes the driving member for driving adjustable column rotation and make intercommunication pass through passage or make adjustable column close passage.This oil quantity control device adopts the mode of driving member driving adjustable column rotation to carry out oil supply quantity adjustment, the rotation angle of driving member in different time periods can be set, to automatically adjust the oil supply quantity of rotating shuttle in different time periods.

Description

Technical Field

[0001] This utility model belongs to the field of sewing equipment technology and relates to an oil quantity control device for a rotary hook. Background Technology

[0002] The rotary hook is an important component of the hook mechanism in a locklock machine. Current locklock machines operate at very high speeds, making lubrication of the rotary hook's moving parts (rotary hook guide rail) crucial. A common lubrication method involves supplying lubricating oil to the opening at the tail end of the rotary hook, which then delivers the oil to the guide rail through internal oil channels.

[0003] The existing method of supplying lubricating oil to the tail end opening of the rotary hook is to use an oil pump. After the oil pump draws oil from the oil pan, it supplies oil through an oil pipe to the mounting shaft of the rotary hook, and then to the tail end of the rotary hook. During operation, the oil supply to the rotary hook needs to be adjusted.

[0004] Patent document with application number 202420363158.4 provides a sewing machine oil volume adjustment device, but its drawback is that it can only be adjusted manually.

[0005] In the existing technology, the device used to adjust the oil supply of the rotary hook has a relatively simple control over the oil volume. The oil volume remains constant during the oil supply process. In actual use, increasing the oil volume will cause oil stains to contaminate the fabric, while decreasing the oil volume will cause the rotary hook guide rail to wear due to insufficient lubrication. Even if the oil volume is adjusted to a suitable level, since the oil volume cannot be changed during use, there will still be oil spillage from the rotary hook that contaminates the fabric after long-term use. Summary of the Invention

[0006] This utility model addresses the aforementioned problems in the existing technology by providing an oil quantity control device for a rotary hook. The technical problem to be solved by this utility model is: how to automatically adjust the oil supply at different time periods.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A rotary hook oil quantity control device includes a cylinder with a channel penetrating the cylinder. The device is characterized by having a rotatable adjusting column in the channel, the adjusting column having a connecting portion. The control device further includes a driving member for driving the adjusting column to rotate and causing the connecting portion to open the channel or causing the adjusting column to close the channel.

[0009] Its working principle is as follows: the channel of the cylinder is used to supply lubricating oil. One end of the channel is connected to the oil pump outlet through the oil inlet pipe, and the other end of the channel is connected to the oil supply pipe, which is used to supply oil to the rotary hook.

[0010] When the connecting part of the adjusting column is not opposite to the channel, the connecting part is not connected to the channel, and the adjusting column closes the channel. When the driving component drives the adjusting column to rotate, the connecting part gradually becomes opposite to the channel, and the connecting part gradually opens the channel and increases the flow rate of the channel, thereby realizing the adjustment of the amount of lubricating oil.

[0011] This oil supply control device uses a drive component (such as a motor) to drive the adjustment column to rotate and adjust the oil supply. By setting the rotation angle of the drive component at different time periods, the oil supply of the rotary hook is automatically adjusted at different time periods. When the sewing machine first starts running, the drive component drives the adjustment column to rotate and increase the oil supply. After running for a period of time, the drive component drives the adjustment column to rotate and decrease the oil supply. After a period of time, the drive component drives the adjustment column to rotate again and increase the oil supply again. This process is repeated to control the oil supply of the rotary hook and achieve a state where the oil supply of the rotary hook is relatively balanced with the oil demand.

[0012] In the aforementioned rotary hook oil quantity control device, the connecting part includes a through hole formed on the adjusting column, the through hole penetrating the adjusting column.

[0013] When the driving component drives the adjusting column to rotate, the through hole gradually becomes aligned with the channel, and the through hole gradually opens the channel and increases the flow rate of the channel, thereby achieving the adjustment of the amount of lubricating oil.

[0014] In the aforementioned oil quantity control device for a rotary hook, the connecting portion is a cut surface formed on one side of the adjusting column.

[0015] The cutting surface is formed by removing material from the outer side of the adjusting column. When the drive unit rotates so that the cutting surface of the adjusting column is perpendicular to the axis of the channel, the adjusting column completely seals the channel. At this time, lubricating oil will not be supplied to the oil supply pipe through the channel. When the cutting surface of the adjusting column is parallel to the axis of the channel, the oil supply is at its maximum. When the drive unit rotates so that the cutting surface of the adjusting column is between perpendicular to the axis of the channel and parallel to the axis of the channel, the oil supply of the rotary hook can be adjusted between the minimum and the maximum.

[0016] In the above-mentioned oil quantity control device for a rotary shuttle, the cylinder is provided with an installation groove that communicates with the channel, the adjusting column is rotatably connected in the installation groove, the top of the cutting surface is higher than the upper part of the channel and can form an oil storage tank one with the top of the installation groove, and the bottom of the cutting surface is lower than the lower part of the channel and can form an oil storage tank two with the bottom of the installation groove.

[0017] When the driving component drives the adjusting column to rotate, the cutting surface opens the channel. The top of the cutting surface and the top of the mounting groove form an oil storage tank one, and the bottom of the cutting surface and the bottom of the mounting groove form an oil storage tank two. When the lubricating oil passes through the channel, it also enters oil storage tank one and oil storage tank two. Afterwards, when the driving component drives the adjusting column to rotate, the lubricating oil in oil storage tank one and oil storage tank two can penetrate into the connection between the groove wall of the mounting groove and the outer wall of the adjusting column, which provides good lubrication for the cylinder and the adjusting column. The adjusting column and the cylinder are not easy to wear, thus improving the service life of the device.

[0018] In the aforementioned oil quantity control device for a rotary hook, the cutting surface passes through the axis of the adjusting column and extends to the top of the adjusting column.

[0019] The cutting surface passes through the axis of the adjusting column, and the cutting surface and half of the outer wall of the adjusting column form a semi-cylinder. This structure has the largest cutting surface area, and when the adjusting column rotates to the same angle, the corresponding flow rate is also greater.

[0020] In the aforementioned oil quantity control device for a rotary hook, the driving component includes a motor, the outer end of the adjusting column extends from the cylinder, and the outer end of the adjusting column is connected to the output shaft of the motor.

[0021] In the aforementioned oil quantity control device for a rotary shuttle, the driving component is a hydraulic motor or a pneumatic motor.

[0022] In the aforementioned rotary hook oil quantity control device, one side of the cylinder has an outwardly protruding connecting ring, the connecting ring being hollow inside and connected to the channel.

[0023] Connecting the oil supply pipe or inlet pipe to the cylinder via a connecting ring greatly improves the ease of installation.

[0024] Compared with the prior art, the advantages of this utility model are as follows:

[0025] This oil quantity control device uses a drive component to drive the adjustment column to rotate and adjust the oil supply. It can set the rotation angle of the drive component in different time periods to automatically adjust the oil supply of the rotary hook in different time periods. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the fuel quantity control device;

[0027] Figure 2 This is a cross-sectional view of the fuel quantity control device;

[0028] Figure 3 This is a schematic diagram of the adjusting column being installed on the motor;

[0029] Figure 4 This is a schematic diagram of the oil level control device installed on a sewing machine.

[0030] In the diagram: 1. Cylinder, 2. Channel, 3. Adjusting column, 4. Connecting part, 5. Driving component, 6. Cutting surface, 7. Mounting groove, 8. Oil storage tank one, 9. Oil storage tank two, 10. Motor, 11. Connecting ring, 12. Oil inlet pipe, 13. Oil supply pipe. Detailed Implementation

[0031] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figure 1-2 As shown, this oil quantity control device includes a cylinder 1, a channel 2 extending through the cylinder 1, a rotatable adjusting column 3 in the channel 2, the adjusting column 3 having a connecting part 4, and the control device also includes a driving member 5 for driving the adjusting column 3 to rotate and causing the connecting part 4 to open the channel 2 or causing the adjusting column 3 to close the channel 2.

[0033] like Figure 4 As shown, the channel 2 of the cylinder 1 is used to supply lubricating oil. One end of the channel 2 is connected to the oil pump outlet through the oil inlet pipe 12, and the other end of the channel 2 is connected to the oil supply pipe 13, which is used to supply oil to the rotary hook.

[0034] When the connecting part 4 of the adjusting column 3 is not opposite to the channel 2, the connecting part 4 is not connected to the channel 2, and the adjusting column 3 closes the channel 2. When the driving member 5 drives the adjusting column 3 to rotate, the connecting part 4 gradually becomes opposite to the channel 2, and the connecting part 4 gradually opens the channel 2 and gradually increases the flow rate of the channel 2, thereby realizing the adjustment of the amount of lubricating oil.

[0035] As one embodiment, the connecting part 4 includes a through hole formed on the adjusting post 3, the through hole penetrating the adjusting post 3.

[0036] When the driving component 5 drives the adjusting column 3 to rotate, the through hole gradually becomes opposite to the channel 2, and the through hole gradually opens the channel 2 and increases the flow rate of the channel 2, thereby realizing the adjustment of the amount of lubricating oil.

[0037] like Figure 2 and 3 As shown, in this embodiment, the connecting part 4 is a cut surface 6 opened on one side of the adjusting column 3.

[0038] The cutting surface 6 is formed by removing material from the outer side of the adjusting column 3. When the drive member 5 rotates so that the cutting surface 6 of the adjusting column 3 is perpendicular to the axis of the channel 2, the adjusting column 3 will completely seal the channel 2. At this time, the lubricating oil will not be supplied to the oil supply pipe 13 through the channel 2. When the cutting surface 6 of the adjusting column 3 is parallel to the axis of the channel 2, the oil supply is at its maximum. When the drive member 5 rotates so that the cutting surface 6 of the adjusting column 3 is between perpendicular to the axis of the channel 2 and parallel to the axis of the channel 2, the oil supply of the rotary hook can be adjusted between the minimum and the maximum.

[0039] like Figure 2 As shown, in this embodiment, the cylinder 1 is provided with an installation groove 7 that communicates with the channel 2. The adjusting column 3 is rotatably connected in the installation groove 7. The top of the cutting surface 6 is higher than the upper part of the channel 2 and can form an oil storage groove 8 with the top of the installation groove 7. The bottom of the cutting surface 6 is lower than the lower part of the channel 2 and can form an oil storage groove 9 with the bottom of the installation groove 7.

[0040] When the driving component 5 drives the adjusting column 3 to rotate, the cutting surface 6 opens the channel 2. The top of the cutting surface 6 and the top of the mounting groove 7 form an oil storage tank 1 8, and the bottom of the cutting surface 6 and the bottom of the mounting groove 7 form an oil storage tank 2 9. When the lubricating oil passes through the channel 2, it also enters the oil storage tank 1 8 and the oil storage tank 2 9. Afterwards, when the driving component 5 drives the adjusting column 3 to rotate, the lubricating oil in the oil storage tank 1 8 and the oil storage tank 2 9 can penetrate into the connection between the groove wall of the mounting groove 7 and the outer wall of the adjusting column 3, which plays a good lubricating role on the cylinder 1 and the adjusting column 3. The adjusting column 3 and the cylinder 1 are not easy to wear, thus improving the service life of the device.

[0041] like Figure 3 As shown, in this embodiment, the cutting surface 6 is formed by cutting along the axial direction of the adjusting column 3 and extends to the top of the adjusting column 3.

[0042] The cutting surface 6 passes through the axis of the adjusting column 3, and the cutting surface 6 and half of the outer wall of the adjusting column 3 form a semi-cylinder. The cutting surface 6 of this structure has the largest area, and the corresponding flow rate is also greater when the adjusting column 3 is rotated to the same angle.

[0043] like Figure 2 As shown, in this embodiment, the driving component 5 includes a motor 10, the outer end of the adjusting column 3 extends from the cylinder 1, and the outer end of the adjusting column 3 is connected to the output shaft of the motor 10.

[0044] In other embodiments, the drive unit 5 is a hydraulic motor or a pneumatic motor.

[0045] like Figure 1 As shown in Figure 2, in this embodiment, one side of the cylinder 1 has an outwardly protruding connecting ring 11, the inside of which is hollow and connected to the channel 2.

[0046] The oil supply pipe 13 or the oil inlet pipe 12 is connected to the cylinder 1 by the connecting ring 11, which greatly improves the ease of installation.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A rotary shuttle oil quantity control device, the oil quantity control device comprising a cylinder (1), wherein a channel (2) penetrating the cylinder (1) is provided on the cylinder (1), characterized in that, The channel (2) is provided with a rotatable adjusting column (3), the adjusting column (3) having a connecting part (4), and the control device further includes a driving member (5) for driving the adjusting column (3) to rotate and causing the connecting part (4) to open the channel (2) or causing the adjusting column (3) to close the channel (2).

2. The oil quantity control device for a rotary shuttle according to claim 1, characterized in that, The connecting part (4) includes a through hole formed on the adjusting column (3), the through hole penetrating the adjusting column (3).

3. The oil quantity control device for a rotary shuttle according to claim 1, characterized in that, The connecting part (4) is a cut surface (6) opened on one side of the adjusting column (3).

4. The oil quantity control device for a rotary shuttle according to claim 3, characterized in that, The cylinder (1) is provided with an installation groove (7) that communicates with the channel (2). The adjusting column (3) is rotatably connected in the installation groove (7). The top of the cutting surface (6) is higher than the upper part of the channel (2) and can form an oil storage tank one (8) with the top of the installation groove (7). The bottom of the cutting surface (6) is lower than the lower part of the channel (2) and can form an oil storage tank two (9) with the bottom of the installation groove (7).

5. The oil quantity control device for a rotary shuttle according to claim 3, characterized in that, The cutting surface (6) passes through the axis of the adjusting column (3) and extends to the top of the adjusting column (3).

6. The oil quantity control device for a rotary shuttle according to any one of claims 1-5, characterized in that, The driving component (5) includes a motor (10), and the outer end of the adjusting column (3) extends from the cylinder (1), and the outer end of the adjusting column (3) is connected to the output shaft of the motor (10).

7. The oil quantity control device for a rotary shuttle according to any one of claims 1-5, characterized in that, The drive component (5) is a hydraulic motor or a pneumatic motor.

8. The oil quantity control device for a rotary shuttle according to claim 1, 2, or 3, characterized in that, One side of the cylinder (1) has an outwardly protruding connecting ring (11), the connecting ring (11) is hollow inside and connected to the channel (2).

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