Dust-proof and oil-leakage-proof movable oil seal frame structure

Abstract

The utility model relates to a dustproof and oil-leakage-proof movable oil seal frame structure which comprises a supporting frame and an oil-leakage-proof flexible piece arranged on the supporting frame, an oil scraping groove for a tooth frame to slide is formed in the oil-leakage-proof flexible piece, the dustproof and oil-leakage-proof movable oil seal frame structure is characterized by further comprising a dustproof frame arranged on the outer side of the supporting frame, a dustproof flexible piece is arranged on the dustproof frame, and the tooth frame is provided with an oil scraping groove for a tooth frame to slide. And a dust scraping groove for the tooth frame to slide is formed in the dustproof flexible sheet. Through the arrangement of the dustproof frame and the dustproof flexible piece, dust on the tooth frame is scraped to the outer side of the oil cavity, the service life of oil in the oil cavity is prolonged, the oil replacement frequency is reduced, the production efficiency is improved, and meanwhile the cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewing machine rack fittings, in particular to a dustproof and oil leakage prevention movable oil seal frame structure. BACKGROUND

[0002] The function of the rack oil seal is to scrape off the oil carried by the rack during the movement of the rack, so as to avoid the oil on the surface of the rack from splashing onto the sewing table and polluting the cloth, thereby affecting the quality of the finished product. The rack oil seal is usually a skeleton type oil seal, that is, an oil seal composed of an iron skeleton and a rubber part. However, since there is a lot of dust in the sewing factory, the dust outside is easily brought into the oil cavity when the rack slides. CONTENT OF THE UTILITY MODEL

[0003] In order to prevent the dust outside from being brought into the oil cavity when the rack moves, the present application provides a dustproof and oil leakage prevention movable oil seal frame structure.

[0004] The dustproof and oil leakage prevention movable oil seal frame structure provided by the present application adopts the following technical solution:

[0005] The dustproof and oil leakage prevention movable oil seal frame structure comprises a support frame and a dustproof and oil leakage prevention flexible sheet arranged on the support frame, and an oil scraping groove for rack sliding is formed on the dustproof and oil leakage prevention flexible sheet, characterized in that it further comprises a dustproof frame arranged on the outer side of the support frame, a dustproof flexible sheet is arranged on the dustproof frame, and a dust scraping groove for rack sliding is formed on the dustproof flexible sheet.

[0006] By adopting the above technical solution, when the rack slides, the end thereof away from the oil cavity is located in the dust scraping groove. When the dust in the air is located on the outer wall of the rack, the rack slides into the oil cavity, the outer wall of the rack is scraped by the dust scraping groove, thereby the dust is scraped off, the dust is not easily brought into the oil cavity, the service life of the oil in the oil cavity is improved, the oil replacement frequency is reduced, the production efficiency is improved, and the cost is saved.

[0007] Optionally, the bottom of the dust scraping groove is a dust scraping surface, and the dust scraping surface extends upward and inclines away from the support frame.

[0008] By adopting the above technical solution, the dust scraping surface is arranged to be inclined, so that the dust scraping effect is good.

[0009] Optionally, the dustproof frame is provided with a dustproof mounting groove for accommodating the dustproof flexible sheet on the side thereof facing the support frame.

[0010] By adopting the above technical solution, the dustproof mounting groove is arranged to facilitate the installation of the dustproof flexible sheet.

[0011] Optionally, the dustproof frame is integrally formed on the support frame.

[0012] By adopting the technical scheme, the dustproof frame and the support frame are integrally casted, and subsequent assembly is not needed, so that production and assembly are convenient.

[0013] Optionally, mounting pieces are arranged on two sides of the support frame, and mounting holes through which bolts pass are arranged on the mounting pieces.

[0014] By adopting the technical scheme, the mounting pieces and the mounting holes are arranged, so that the support frame is conveniently fixed on the sewing machine.

[0015] Optionally, connecting pieces are arranged on two sides of the dustproof frame, and connecting holes through which bolts pass are arranged on the connecting pieces, and the connecting holes and the mounting holes are opposite.

[0016] By adopting the technical scheme, the connecting holes and the mounting holes are opposite, so that the connecting holes and the mounting holes are passed through by the same bolt during installation, and the support frame and the dustproof frame are integrally fixed on the sewing machine, so that the installation steps are simple.

[0017] Optionally, an avoiding groove for the tooth frame to slide is arranged on the outer side of the support frame, an inner groove for accommodating an oil leakage prevention flexible piece is arranged on the top of the support frame, the inner groove penetrates through the bottom of the support frame, the bottom of the inner groove is used for connecting an oil cavity, and when the oil leakage prevention flexible piece is located in the inner groove, the oil scraping groove is opposite to the avoiding groove, and the inner diameter of the oil scraping groove is smaller than the avoiding groove.

[0018] By adopting the technical scheme, the avoiding groove is arranged, so that the oil leakage prevention flexible piece is well supported by the support frame, the deformation space of the oil leakage prevention flexible piece is reduced when the tooth frame slides and rubs the oil leakage prevention flexible piece, so that the oil scraping groove inner wall is not easy to be separated from the tooth frame, and the sealing performance is good. Meanwhile, the inner groove penetrates through the top of the support frame to the bottom of the support frame, the bottom of the inner groove is connected to the oil cavity, so that the scraped oil is conveniently returned to the oil cavity, and oil leakage is prevented.

[0019] Optionally, the bottom surface of the oil scraping groove is an oil scraping surface, and the oil scraping surface extends upward and inclines toward the inner side of the support frame.

[0020] By adopting the technical scheme, the oil scraping surface is arranged to be inclined, so that the oil scraping effect is improved.

[0021] Optionally, the oil leakage prevention flexible piece is provided with two.

[0022] By adopting the technical scheme, double-layer sealing is formed on the oil cavity, and oil leakage from the tooth frame sliding part is further prevented.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The dustproof frame and the dustproof flexible sheet are arranged, so that the dust on the tooth frame is scraped out of the oil cavity, the service life of the oil in the oil cavity is improved, the oil replacement frequency is reduced, the production efficiency is improved, and the cost is saved;

[0025] 2. The dustproof frame is integrally formed on the support frame, which is convenient for integrally forming by casting process, so that the processing is convenient and the installation is convenient;

[0026] 3. The dust scraping surface is inclined, so that the dust scraping effect is good;

[0027] 4. Two oil leakage prevention flexible sheets form double-layer sealing for the oil cavity, further preventing oil from leaking out of the sliding part of the tooth frame. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of example 1.

[0029] Figure 2 is a sectional view of example 1.

[0030] Figure 3 is a schematic diagram of the structure of example 2.

[0031] Figure 4 is a schematic diagram of the structure of example 3.

[0032] BRIEF DESCRIPTION OF DRAWINGS: 1, support frame; 11, inner groove; 12, avoiding groove; 2, dustproof frame; 21, dustproof mounting groove; 22, dustproof groove; 3, oil leakage prevention flexible sheet; 31, oil scraping groove; 311, oil scraping surface; 4, dustproof flexible sheet; 41, dust scraping groove; 411, dust scraping surface; 5, mounting sheet; 51, mounting hole; 6, connecting sheet; 61, connecting hole. DETAILED DESCRIPTION

[0033] The application will be further described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] Example 1 of the application discloses a dustproof and oil leakage prevention movable oil seal frame structure. Referring to Figure 1 , the dustproof and oil leakage prevention movable oil seal frame structure comprises a support frame 1, a dustproof frame 2, an oil leakage prevention flexible sheet 3 arranged on the support frame 1, and a dustproof flexible sheet 4 arranged on the dustproof frame 2.

[0036] Referring to Figure 2 , the support frame 1 is provided with an inner groove 11 for accommodating the oil leakage prevention flexible sheet 3 at the top, the inner groove 11 penetrates through the bottom of the support frame 1 from the top of the support frame 1, and the bottom end of the inner groove 11 is communicated with the oil cavity on the sewing machine. The side of the support frame 1 facing the outside of the oil cavity is the outside, and the outside of the support frame 1 is provided with an avoiding groove 12 for the tooth frame to slide.

[0037] Referring toFigure 2 The oil-proof flexible sheet 3 is inserted into the inner groove 11. An oil-scraping groove 31 is provided on the oil-proof flexible sheet 3 opposite the relief groove 12, allowing the tooth frame to slide. The inner diameter of the oil-scraping groove 31 is smaller than the inner wall of the relief groove 12. The outer wall of the tooth frame slides in contact with the inner wall of the oil-scraping groove 31. The bottom surface of the oil-scraping groove 31 is the oil-scraping surface 311, which extends upwards at an angle towards the inner side of the support frame 1, resulting in better oil removal.

[0038] Reference Figure 1 The support frame 1 has mounting plates 5 fixed on both sides. The mounting plates 5 have mounting holes 51 for bolts to pass through, so that the support frame 1 can be fixed on the sewing machine.

[0039] Reference Figure 1 , Figure 2 The dustproof frame 2 is integrally formed on the outside of the support frame 1. A dustproof mounting groove 21 for accommodating the flexible dustproof sheet 4 is provided on the side of the dustproof frame 2 facing the support frame 1. The dustproof mounting groove 21 extends upwards through the top of the dustproof frame 2. A dustproof groove 22 for sliding of the dental appliance is provided on the dustproof frame 2. A dust scraping groove 41 for sliding of the dental appliance is provided on the flexible dustproof sheet 4 directly opposite the dustproof groove 22. The inner diameter of the dust scraping groove 41 is smaller than the inner diameter of the dustproof groove 22. The bottom of the dust scraping groove 41 is a dust scraping surface 411, which extends upwards at an angle away from the support frame 1.

[0040] The implementation principle of the dustproof and oil-leakage-proof movable oil seal frame structure in Embodiment 1 of this application is as follows: When the tooth frame slides, its outer end is located in the dust scraping groove 41, and its inner end is located in the oil scraping surface 311 groove. When the tooth frame slides out of the oil cavity, the oil scraping surface 311 scrapes off the oil on the tooth frame, and the scraped oil returns to the oil cavity through the inner groove 11, resulting in a good sealing effect and preventing oil leakage. When the tooth frame slides into the oil cavity, the dust scraping groove 41 scrapes off the dust on the surface of the tooth frame, blocking the dust from entering the oil cavity, thereby improving the service life of the oil, reducing the frequency of oil changes, improving production efficiency, and reducing the operating cost of the sewing machine.

[0041] Example 2

[0042] Embodiment 2 of this application discloses a dustproof and leak-proof movable oil seal frame structure, referring to... Figure 3 The difference from Embodiment 1 is that connecting plates 6 are fixed on both sides of the dustproof frame 2. The connecting plates 6 have connecting holes 61 for bolts to pass through. The connecting holes 61 and the mounting holes 51 are aligned and the same bolt passes through them. This allows the support frame 1 and the dustproof frame 2 to be fixed on the sewing machine at the same time, making assembly simple.

[0043] Example 3

[0044] Embodiment 3 of this application discloses a dustproof and leak-proof movable oil seal frame structure, referring to... Figure 4The difference from example 2 is that two oil leakage prevention flexible sheets 3 are arranged, the oil scraping surfaces 311 of the two oil leakage prevention flexible sheets 3 are both inclined upward in the direction close to the inner side of the support frame 1, double oil scraping is realized, the sealing effect is better, the oil scraping effect is better, and the oil is not easy to leak out.

[0045] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A dustproof and oil-leakage-proof movable oil seal frame structure, comprising a support frame (1) and an oil-leakage-proof flexible sheet (3) disposed on the support frame (1), wherein the oil-leakage-proof flexible sheet (3) is provided with an oil scraping groove (31) for sliding of the toothed frame, characterized in that: It also includes a dustproof frame (2) disposed on the outside of the support frame (1), the dustproof frame (2) is provided with a dustproof flexible sheet (4), and the dustproof flexible sheet (4) is provided with a dust scraping groove (41) for the tooth frame to slide.

2. The dustproof and leak-proof movable oil seal frame structure according to claim 1, characterized in that: The bottom of the dust scraper groove (41) is the dust scraping surface (411), which extends upward at an angle away from the support frame (1).

3. The dustproof and leak-proof movable oil seal frame structure according to claim 1, characterized in that: The dustproof frame (2) is provided with a dustproof mounting groove (21) for accommodating the dustproof flexible sheet (4) on the side facing the support frame (1).

4. The dustproof and oil-leakage-proof movable oil seal frame structure according to claim 3, characterized in that: The dustproof frame (2) is integrally formed on the support frame (1).

5. The dustproof and oil-leakage-proof movable oil seal frame structure according to claim 3, characterized in that: The support frame (1) is provided with mounting plates (5) on both sides, and the mounting plates (5) are provided with mounting holes (51) for bolts to pass through.

6. The dustproof and oil-leakage-proof movable oil seal frame structure according to claim 5, characterized in that: The dustproof frame (2) is provided with connecting plates (6) on both sides. The connecting plates (6) are provided with connecting holes (61) for bolts to pass through. The connecting holes (61) and the mounting holes (51) are facing each other.

7. The dustproof and oil-leakage-proof movable oil seal frame structure according to claim 1, characterized in that: The support frame (1) has a clearance groove (12) on its outer side for the toothed bracket to slide. The support frame (1) has an inner groove (11) on its top to accommodate the oil-proof flexible sheet (3). The inner groove (11) extends through the bottom of the support frame (1). The bottom of the inner groove (11) is used to connect to the oil cavity. When the oil-proof flexible sheet (3) is located in the inner groove (11), the oil scraper groove (31) is directly opposite the clearance groove (12). The inner diameter of the oil scraper groove (31) is smaller than that of the clearance groove (12).

8. The dustproof and oil-leakage-proof movable oil seal frame structure according to claim 1, characterized in that: The bottom surface of the oil scraping groove (31) is the oil scraping surface (311), which extends upward at an angle toward the inside of the support frame (1).

9. The dustproof and leak-proof movable oil seal frame structure according to claim 1, characterized in that: Two oil-proof flexible sheets (3) are provided.

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