Oil return system for sewing machine base
Through the design of the dual oil return system and filter mesh, the problems of easy blockage and oil leakage of traditional sewing machine oil return system are solved, achieving a longer service life and higher accuracy, and simplifying maintenance.
Patent Information
- Application Number
- CN201711142604.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2017-11-17
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2037-11-17
AI Technical Summary
The oil return system of the traditional sewing machine base is easily blocked by dust, resulting in oil accumulation and oil leakage, reducing the service life and accuracy of the sewing machine.
A dual oil return system is adopted, including the first oil return chamber and the second oil return chamber. A filter is installed on the second oil return chamber to avoid dust blockage and oil leakage through the dual oil return system, and the oil is achieved by optimizing the oil pipe structure. Effective recycling and lubrication.
It effectively avoids dust clogging and oil leakage, extends the service life of the sewing machine, improves accuracy, and simplifies the maintenance process.
Smart Images
Figure CN107723946B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sewing machines, and in particular to an oil return system of a sewing machine base. Background Art
[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. The operation of the sewing threads is mostly through mechanical operation, and the operation of mechanical parts is inseparable from the lubrication of engine oil to ensure the long-term use of the sewing machine. The oil return system of the traditional sewing machine base mostly adopts one-way oil supply and one-way oil return of the oil pump, that is, there are the following defects: First, dust can easily clog the oil return pipeline, so that the oil accumulation is prone to oil leakage; second, dust can easily enter the mechanical parts through the oil return system, reducing the service life and precision of the sewing machine. Summary of the invention
[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an oil return system for a sewing machine base which has double oil returns, is not easy to be blocked, is easy to maintain and has a long service life.
[0004] In order to achieve the above object, the present invention adopts the following technical solutions:
[0005] A return oil system for a sewing machine base comprises a base and a chin seat fixed at the front end of the base, an oil pump group is arranged at the bottom of the base, one end of the oil pump group is connected to an oil supply pipe, and the other end is connected to an oil return pipe, the chin seat comprises a sewing cavity and an oil return cavity which are connected to each other, the sewing cavity is concave to form a first return oil chamber, the return oil chamber is concave to form a second return oil chamber, a filter screen is arranged on the second return oil chamber, and the first return oil chamber and the second return oil chamber are both connected to the oil pump group through the oil return pipe.
[0006] Preferably, the second oil return chamber is concavely provided with an oil collecting groove, and the filter screen is arranged on the oil collecting groove.
[0007] Preferably, a through hole for mutual conduction is provided between the sewing cavity and the oil return cavity.
[0008] Preferably, a first oil return hole for inserting the return oil pipe is opened on the first oil return chamber, and a second oil return hole for inserting the return oil pipe is opened on the second oil return chamber. The first oil return hole is arranged above the filter net, and the second oil return hole is arranged in the oil collecting groove under the filter net.
[0009] Preferably, an upper oil return pipe is connected to the first oil return chamber, a lower oil return pipe is connected to the second oil return chamber, and an oil pipe joint is connected between the upper oil return pipe and the lower oil return pipe.
[0010] Preferably, the upper oil return pipe is arranged horizontally, the lower oil return pipe is arranged obliquely, and a flexible pipe is arranged between the lower oil return pipe and the oil pipe joint.
[0011] Preferably, an oil supply cavity is provided on the base, and the oil supply pipe is provided through the oil supply cavity.
[0012] The present invention has the following advantages: 1. The oil return system includes the oil return of the first oil return chamber and the oil return of the second oil return chamber. The double-chamber dual-diversity oil return effectively avoids oil collection and oil leakage; 2. The filter screen on the second oil return chamber can filter foreign dust to prevent dust from easily clogging the oil return pipeline, further avoiding oil leakage caused by oil accumulation, and at the same time avoiding dust in mechanical parts, greatly improving the service life and precision of the sewing machine; 3. During maintenance, you only need to remove the chin seat to clean the filter screen, which is very convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The invention proposes an explosion diagram of an oil return system for a sewing machine base Figure 1 .
[0014] Figure 2 The invention proposes an explosion diagram of an oil return system for a sewing machine base Figure 2 .
[0015] Figure 3 The present invention provides a schematic diagram of the chin seat Figure 1 .
[0016] Figure 4 The present invention provides a schematic diagram of the chin seat Figure 2 . DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0018] Reference Figures 1 to 4, an oil return system for a sewing machine base, comprising a base 1 and a chin base 2 fixed at the front end of the base 1, an oil pump group 3 is arranged at the bottom of the base 1, one end of the oil pump group 3 is connected to an oil supply pipe 4, and the other end is connected to an oil return pipe 5, the chin base 2 comprises a sewing cavity 6 and an oil return cavity 7 which are connected to each other, the sewing cavity 6 is concave to form a first oil return chamber 61, the oil return chamber 7 is concave to form a second oil return chamber 71, a filter screen 8 is arranged on the second oil return chamber 71, the first oil return chamber 61 and the second oil return chamber 72 are both connected to the oil pump group 3 through the oil return pipe 5, and the principle of the oil return system is through The operation of the oil pump group 3 will allow the oil to enter the various mechanical parts of the sewing machine through the oil supply pipe 4 for lubrication. After working, the oil will finally seep into the chin seat 2, and the chin seat 2 can be re-collected into the oil pump group 3 through the oil return system of the first oil return chamber 61 and the second oil return chamber 72 for reuse. In the actual oil return process, the second oil return chamber 72 is given priority because the oil return hole of the second oil return chamber 72 is at a lower position, and the filter net 8 on the second oil return chamber 72 can filter and block dust to prevent it from entering the oil return system, thereby ensuring the smooth flow of the oil return system.
[0019] The second oil return chamber 71 is concavely provided with an oil collecting groove 711 , and the filter screen 8 is arranged on the oil collecting groove 711 . The oil collecting groove 711 collects the oil in the two oil return chambers together to realize the priority oil return.
[0020] A through hole 9 for mutual conduction is provided between the sewing chamber 6 and the oil return chamber 7. The through hole 9 allows the oil in the sewing chamber 6 to enter the oil return chamber 7 for filtration.
[0021] The first oil return chamber 61 is provided with a first oil return hole 10 for inserting the return oil pipe 5, and the second oil return chamber 71 is provided with a second oil return hole 11 for inserting the return oil pipe 5. The first oil return hole 10 is arranged above the filter 8, and the second oil return hole 11 is arranged in the oil collecting groove 711 under the filter 8. The double oil return system is operated by the second oil return chamber 71 first, because the filter 8 thereon can filter the dust to prevent it from entering the oil return system. Only when the second oil return chamber 71 is overloaded can the first oil return chamber 61 be operated simultaneously to ensure the smooth flow of oil return.
[0022] An upper oil return pipe 12 is connected to the first oil return chamber 61, and a lower oil return pipe 13 is connected to the second oil return chamber 71. An oil pipe joint 14 is connected between the upper oil return pipe 12 and the lower oil return pipe 13. The upper oil return pipe 12 is horizontally arranged, and the lower oil return pipe 13 is tilted. A flexible pipe 16 is arranged between the lower oil return pipe 13 and the oil pipe joint 14. The operation of the oil pump will generate negative pressure, and the tilted setting of the lower oil return pipe 13 makes it have the effect of preferential oil return, and the oil pipe joint 14 brings the return oil pipelines in the two oil chambers together to the oil pump group. At the same time, the structural setting of the flexible pipe 16 facilitates the insertion of the lower oil return pipe 13 at any angle, further optimizing the structure.
[0023] An oil supply cavity 15 is provided on the base 1 , and an oil supply pipe 4 is provided through the oil supply cavity 15 . The oil pump presses the oil out of the oil supply cavity 15 and enters the mechanical parts of the sewing machine through the oil supply pipe 4 .
[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An oil return system for a sewing machine base, comprising a base and a chin seat fixed to the front end of the base, an oil pump group is arranged at the bottom of the base, one end of the oil pump group is connected to an oil supply pipe, and the other end is connected to an oil return pipe, characterized in that: The chin seat includes a sewing cavity and an oil return cavity which are connected to each other, the sewing cavity is concave to form a first oil return chamber, the oil return chamber is concave to form a second oil return chamber, a filter screen is arranged on the second oil return chamber, and the first oil return chamber and the second oil return chamber are both connected to the oil pump group through an oil return pipe; The second oil return chamber is concavely provided with an oil collecting groove, and the filter screen is arranged on the oil collecting groove; A through hole for mutual conduction is provided between the sewing cavity and the oil return cavity; The first oil return chamber is provided with a first oil return hole for inserting the oil return pipe, and the second oil return chamber is provided with a second oil return hole for inserting the oil return pipe. The first oil return hole is arranged above the filter screen, and the second oil return hole is arranged in the oil collecting groove under the filter screen. The first oil return chamber is connected to an upper oil return pipe, the second oil return chamber is connected to a lower oil return pipe, and an oil pipe joint is connected between the upper oil return pipe and the lower oil return pipe.
2. The oil return system of a sewing machine base according to claim 1, characterized in that: The upper oil return pipe is arranged horizontally, the lower oil return pipe is arranged inclinedly, and a flexible pipe is arranged between the lower oil return pipe and the oil pipe joint.
3. The oil return system of a sewing machine base according to claim 1, characterized in that: The base is provided with an oil supply cavity, and the oil supply pipe is arranged through the oil supply cavity.