A sewing machine vibration isolation system and a sewing machine

Abstract

The utility model relates to a sewing machine vibration isolation system and sewing machine. Sewing machine vibration isolation system includes the platen, oil pan and oil pan backplate, and oil pan passes through the platen and is connected on the oil pan backplate through oil pan damping pad and oil pan backplate screw, is equipped with the through hole that communicates top and bottom surface on the oil pan backplate, and the upper end of tray screw passes through the through hole and is arranged on the platen and rotates, and the lower end of tray screw is equipped with the cap, and the anti -vibration rubber pad is set up on tray screw, and the anti -vibration rubber pad is contacted with the bottom surface of oil pan backplate, and the top of anti -vibration rubber pad passes through the through hole and is located between the platen and oil pan backplate, and the bottom of anti -vibration rubber pad passes through the through hole and is located between the oil pan backplate and cap. And sewing machine adopts the sewing machine vibration isolation system described above. The sewing machine vibration isolation system and sewing machine can avoid the collision of the oil pan backplate and the anti -vibration pad steel sleeve when high -speed operation and make the anti -vibration rubber pad also play the vibration isolation effect in the horizontal direction.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a sewing machine vibration isolation system, and a sewing machine using the vibration isolation system. Background Technology

[0002] Sewing machines are widely used in clothing, textiles, and packaging processing. With industrial development, sewing machine efficiency and speed have increased, leading to greater vibrations transmitted from the machine body to the sewing table. During sewing, the hand is in direct contact with the table, and the fabric and tools are placed on it. The greater the table vibration, the louder the noise, and the greater the movement of the fabric and tools, severely impacting the operator's convenience and well-being.

[0003] The vibration of an object is affected by three parameters: stiffness, which is related to potential energy; mass, which is related to kinetic energy; and damping, which is related to energy dissipation. Therefore, common methods in vibration control include changing stiffness and mass to avoid resonance, using vibration isolators to reduce vibration transmission, or using dynamic vibration absorbers to absorb some of the vibration energy at a specific frequency. However, currently, increasing the stiffness and mass of the machine frame or adding dynamic vibration absorbers is too costly and difficult to implement. Furthermore, due to the inherent characteristics of the machine body, it is already difficult to reduce vibration significantly. The best approach is to design a reasonable vibration isolation system to reduce the vibration transmitted from the machine body to the platform.

[0004] Existing sewing machine vibration isolation systems, such as Figure 1-2As shown, the machine body is mounted on the lower oil pan, and the oil pan passes through the platform 1 and is connected to the oil pan support plate 4 via the oil pan damping pad 2 and the oil pan support plate screw 3. The platform 1 has a stepped hole 101 that runs vertically through it. A tray screw fixing head 5 is installed in the stepped hole 101. The upper end of the tray screw fixing head 5 is engaged with the stepped surface of the stepped hole 101. The lower end of the tray screw fixing head 5 has an upwardly extending threaded hole 501 at its center. The oil pan support plate 4 has a through hole through which a tray screw 6 passes. The lower end of the tray screw 6 has a cap 601, and the upper end of the tray screw 6 extends into the stepped hole 101 and is screwed onto the tray screw fixing head 5. Inside the threaded hole 501, the anti-vibration pad steel sleeve 7 is fitted onto the tray screw 6. The upper end of the anti-vibration pad steel sleeve 7 has an annular protrusion 701, which is located between the platform 1 and the oil pan support plate 4. The lower end of the anti-vibration pad steel sleeve 7 passes through the through hole and extends downward. The anti-vibration rubber pad 8 is fitted onto the outer surface of the lower end of the anti-vibration pad steel sleeve 7. The anti-vibration rubber pad 8 is located between the oil pan support plate 4 and the cap 601. The anti-vibration rubber pad 8 is cylindrical. The lower end of the tray screw 6 is fitted with a washer 9 located on the upper side of the cap 601. The upper end of the anti-vibration rubber pad 8 abuts against the bottom surface of the oil pan support plate 4, and the lower end of the anti-vibration rubber pad 8 abuts against the upper side surface of the washer 9. However, during actual testing, when the sewing machine speed was between 3000-4000 rpm, the oil pan support plate 4 would collide with the anti-vibration pad steel sleeve 7, generating a lot of noise. At the same time, the anti-vibration rubber pad 8 could only achieve vertical vibration isolation through vertical compression, while in the horizontal direction, the oil pan support plate 4 and the anti-vibration pad steel sleeve 7 were in direct rigid contact and did not play a vibration isolation role. In addition, the anti-vibration rubber pad 8 had a large stiffness, and its vertical vibration isolation effect was not obvious. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a sewing machine vibration isolation system and a sewing machine that can avoid generating large noise during high-speed operation and has horizontal vibration isolation capability.

[0006] The present invention adopts the following technical solution:

[0007] This utility model provides a vibration isolation system for a sewing machine, including a table, an oil pan, and an oil pan support plate. The sewing machine body is mounted on the oil pan. The oil pan passes through the table and is connected to the oil pan support plate via an oil pan damping pad and an oil pan support plate screw. The oil pan support plate has a through hole connecting the top and bottom surfaces. The upper end of the support plate screw passes through the through hole and is screwed onto the table. The lower end of the support plate screw has a cap. An anti-vibration rubber pad is fitted on the support plate screw. The anti-vibration rubber pad contacts the bottom surface of the oil pan support plate. The top of the anti-vibration rubber pad protrudes through the through hole and is located between the table and the oil pan support plate. The bottom of the anti-vibration rubber pad protrudes through the through hole and is located between the oil pan support plate and the cap.

[0008] Preferably, the oil pan vibration damping pad is a conical cylindrical shape with a diameter that gradually increases from top to bottom, and the oil pan vibration damping pad has a connecting hole extending axially. The oil pan support plate screw is inserted into the connecting hole and screwed onto the oil pan support plate. The bottom of the oil pan has a mounting hole that matches the oil pan vibration damping pad, and the upper end of the oil pan vibration damping pad is embedded in the mounting hole.

[0009] Preferably, the platform has a stepped hole that extends through the top and bottom surfaces. A tray screw fixing head is provided in the stepped hole. The upper end of the tray screw fixing head is engaged with the stepped surface of the stepped hole. The lower end of the tray screw fixing head has an axially threaded hole. The upper end of the tray screw extends into the stepped hole and is screwed into the threaded hole.

[0010] Preferably, the tray screw is fitted with two washers, one washer is pressed between the platform and the anti-vibration rubber pad, and the other washer is pressed between the cap and the anti-vibration rubber pad.

[0011] Preferably, the outer diameter of the top of the vibration damping rubber pad is the same as the outer diameter of the side pad of the platform, and the outer diameter of the bottom of the vibration damping rubber pad is the same as the outer diameter of the side pad of the cap.

[0012] Preferably, the openings on the vibration damping rubber pad include a top equal diameter hole section, a middle variable diameter hole section, and a bottom equal diameter hole section. The middle variable diameter hole section gradually narrows from the middle position towards the top and bottom, and the top and bottom of the middle variable diameter hole section are connected to the top equal diameter hole section and the bottom equal diameter hole section, respectively.

[0013] This utility model also provides a sewing machine that employs any of the above-mentioned sewing machine vibration isolation systems.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The sewing machine vibration isolation system of this utility model eliminates the anti-vibration pad steel sleeve, thereby avoiding the collision between the oil pan support plate and the anti-vibration pad steel sleeve during high-speed operation, which would generate a lot of noise. Furthermore, the anti-vibration rubber pad separates the oil pan support plate from the tray screw, so that the anti-vibration rubber pad can also play a vibration isolation role in the horizontal direction.

[0016] Since the sewing machine of this invention adopts the above-mentioned sewing machine vibration isolation system, it naturally also has the above-mentioned beneficial effects, which will not be elaborated here. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation status of the vibration isolation system of a sewing machine in the background art.

[0018] Figure 2 This is a schematic diagram of the disassembled state of the vibration isolation system of a sewing machine in the background art.

[0019] Figure 3 This is a schematic diagram of the installation state of the sewing machine vibration isolation system in an embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the disassembled state of the sewing machine vibration isolation system in an embodiment of this utility model.

[0021] Figure 5 This is a schematic diagram of the anti-vibration rubber pad of the sewing machine vibration isolation system before compression, according to an embodiment of this utility model.

[0022] Figure 6 This is a schematic diagram of the state of the anti-vibration rubber pad of the sewing machine vibration isolation system after compression in an embodiment of this utility model.

[0023] The reference numerals in the attached figures are explained as follows:

[0024] 1. Tabletop; 6. Tray screws

[0025] 101, Stepped Hole 601, Cap Body

[0026] 2. Oil pan vibration damping pad; 7. Anti-vibration pad steel sleeve

[0027] 201, Connecting hole 701, Annular flange

[0028] 3. Oil pan support plate screws; 8. Anti-vibration rubber pads

[0029] 4. Oil pan support plate 801, top equal diameter hole section

[0030] 401, Through hole; 802, Middle diameter changing section

[0031] 5. Tray screw fixing head 803, bottom equal diameter hole section

[0032] 501, threaded hole 9, gasket Detailed Implementation

[0033] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0034] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] See Figure 3 and Figure 4 This embodiment provides a sewing machine vibration isolation system, including a table 1, an oil pan, and an oil pan support plate 4. The sewing machine body is mounted on the oil pan. The oil pan passes through the table 1 and is connected to the oil pan support plate 4 through an oil pan damping pad 2 and an oil pan support plate screw 3. The oil pan support plate 4 has a through hole 401 connecting the top and bottom surfaces. The upper end of the support plate screw 6 passes through the through hole 401 and is screwed onto the table 1. The lower end of the support plate screw 6 has a cap 601. An anti-vibration rubber pad 8 is fitted on the support plate screw 6. The anti-vibration rubber pad 8 contacts the bottom surface of the oil pan support plate 4. The top of the anti-vibration rubber pad 8 passes through the through hole 401 and is located between the table 1 and the oil pan support plate 4. The bottom of the anti-vibration rubber pad 8 passes through the through hole 401 and is located between the oil pan support plate 4 and the cap 601.

[0038] contrast Figures 1-4 In this embodiment, the sewing machine vibration isolation system eliminates the anti-vibration pad steel sleeve 7, thereby avoiding the collision between the oil pan support plate 4 and the anti-vibration pad steel sleeve 7 during high-speed operation, which generates a lot of noise. Furthermore, the anti-vibration rubber pad 8 separates the oil pan support plate 4 from the tray screw 6, so that the anti-vibration rubber pad 8 can also play a vibration isolation role in the horizontal direction.

[0039] Preferably, see Figure 3 The oil pan vibration damping pad 2 is a conical cylindrical shape with a diameter that gradually increases from top to bottom. The oil pan vibration damping pad 2 has a connecting hole 201 extending axially. The oil pan support plate screw 3 is inserted into the connecting hole 201 and screwed onto the oil pan support plate 4. The bottom of the oil pan has a mounting hole that matches the oil pan vibration damping pad 2. The upper end of the oil pan vibration damping pad 2 is embedded in the mounting hole so that the oil pan vibration damping pad 2 is relatively stable during the vibration damping process.

[0040] Preferably, see Figure 3The tabletop 1 has a stepped hole 101 extending through its top and bottom surfaces. A tray screw fixing head 5 is installed within the stepped hole 101. The upper end of the tray screw fixing head 5 engages with the stepped surface of the stepped hole 101, and the lower end of the tray screw fixing head 5 has an axially threaded hole 501. The upper end of the tray screw 6 extends into the stepped hole 101 and is screwed into the threaded hole 501. The stepped hole 101 and the tray screw fixing head 5 allow for connection between the tabletop 1 and the tray screw 6 while maintaining a flat surface on the tabletop 1, facilitating the placement of fabric and tools on the tabletop 1.

[0041] Preferably, see Figure 3 and Figure 4 Two washers 9 are fitted onto the tray screw 6. One washer 9 is pressed between the platform 1 and the anti-vibration rubber pad 8, and the other washer 9 is pressed between the cap 601 and the anti-vibration rubber pad 8. The two washers 9 can support the top and bottom surfaces of the anti-vibration rubber pad 8, preventing noise caused by movement, and also making the force exerted by the cap 601 on the bottom surface of the anti-vibration rubber pad 8 more even, thus extending the service life of the anti-vibration rubber pad 8.

[0042] Preferably, see Figure 3 The outer diameter of the top of the anti-vibration rubber pad 8 is the same as the outer diameter of the side pad 9 of the platform 1, and the outer diameter of the bottom of the anti-vibration rubber pad 8 is the same as the outer diameter of the side pad 9 of the cap 601, so that the top and bottom surfaces of the anti-vibration rubber pad 8 are subjected to more uniform force and the service life of the anti-vibration rubber pad 8 is extended.

[0043] Preferably, see Figure 5 and Figure 6 The openings on the anti-vibration rubber pad 8 include a top equal diameter hole section 801, a middle variable diameter hole section 802, and a bottom equal diameter hole section 803. The middle variable diameter hole section 802 gradually narrows from the middle position towards the top and bottom, and the top and bottom of the middle variable diameter hole section 802 are connected to the top equal diameter hole section 801 and the bottom equal diameter hole section 803, respectively.

[0044] See Figure 5 and Figure 6 In this embodiment, the shape of the opening on the vibration damping rubber pad 8 has been changed. When performing vertical vibration isolation, the vibration damping rubber pad 8 of this embodiment can achieve force compression through the outward expansion deformation of the central variable diameter hole section 802. Compared with the original cylindrical hole vertical compression, the vibration damping rubber pad 8 of this embodiment can achieve lower stiffness and better vertical vibration isolation effect under the same hardness.

[0045] It should be noted that the original anti-vibration rubber pad 8 has a cylindrical opening, which is difficult to compress and deform, has high rigidity, and has poor vibration isolation effect. To reduce the rigidity, the rubber can only be made very soft, which will cause the machine to shake more obviously and is not conducive to reducing the vibration of the table 1.

[0046] This embodiment also provides a sewing machine that uses the above-described sewing machine vibration isolation system.

[0047] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A sewing machine vibration isolation system characterized by, The sewing machine includes a table (1), an oil pan, and an oil pan support plate (4). The machine body is mounted on the oil pan. The oil pan passes through the table (1) and is connected to the oil pan support plate (4) via an oil pan damping pad (2) and an oil pan support plate screw (3). The oil pan support plate (4) has a through hole (401) connecting the top and bottom surfaces. The upper end of a support plate screw (6) passes through the through hole (401) and is screwed onto the table (1). The lower end of the support plate screw (6)... The end is provided with a cap body (601), and a vibration damping rubber pad (8) is fitted on the tray screw (6). The vibration damping rubber pad (8) is in contact with the bottom surface of the oil pan support plate (4). The top of the vibration damping rubber pad (8) passes through the through hole (401) and is located between the platform (1) and the oil pan support plate (4). The bottom of the vibration damping rubber pad (8) passes through the through hole (401) and is located between the oil pan support plate (4) and the cap body (601).

2. The sewing machine isolation system of claim 1, wherein, The oil pan vibration damping pad (2) is a conical cylindrical shape with a diameter that gradually increases from top to bottom, and the oil pan vibration damping pad (2) has a connecting hole (201) extending axially. The oil pan support plate screw (3) is inserted into the connecting hole (201) and screwed onto the oil pan support plate (4). The bottom of the oil pan has a mounting hole that matches the oil pan vibration damping pad (2), and the upper end of the oil pan vibration damping pad (2) is embedded in the mounting hole.

3. The sewing machine isolation system of claim 1, wherein, The platform (1) is provided with a stepped hole (101) that extends through the top and bottom surfaces. A tray screw fixing head (5) is provided in the stepped hole (101). The upper end of the tray screw fixing head (5) is engaged with the stepped surface of the stepped hole (101). The lower end of the tray screw fixing head (5) is provided with a threaded hole (501) axially. The upper end of the tray screw (6) extends into the stepped hole (101) and is screwed into the threaded hole (501).

4. The sewing machine isolation system of claim 1, wherein, Two washers (9) are fitted on the tray screw (6). One washer (9) is pressed between the platform (1) and the anti-vibration rubber pad (8), and the other washer (9) is pressed between the cap (601) and the anti-vibration rubber pad (8).

5. The sewing machine isolation system of claim 4, wherein, The outer diameter of the top of the anti-vibration rubber pad (8) is the same as the outer diameter of the side pad (9) of the platform (1), and the outer diameter of the bottom of the anti-vibration rubber pad (8) is the same as the outer diameter of the side pad (9) of the cap body (601).

6. The sewing machine isolation system of claim 1, wherein, The openings on the anti-vibration rubber pad (8) include a top equal diameter hole section (801), a middle variable diameter hole section (802), and a bottom equal diameter hole section (803). The middle variable diameter hole section (802) gradually narrows from the middle position towards the top and bottom, and the top and bottom of the middle variable diameter hole section (802) are connected to the top equal diameter hole section (801) and the bottom equal diameter hole section (803), respectively.

7. A sewing machine characterized by comprising: The sewing machine vibration isolation system according to any one of claims 1-6 is adopted.

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