Damping sewing table and overlock machine

Abstract

The utility model belongs to the technical field of overlock machine, disclose a kind of damping sewing table and overlock machine, damping sewing table includes the first mesa and second mesa at least along the first direction of stacking, first mesa is covered in the outside of second mesa, and it is provided with damping layer between first mesa and second mesa, the side of second mesa deviating from first mesa is provided with installation space, for installing on overlock machine.The utility model is by the first mesa and second mesa along the first direction of stacking, and it is provided with damping layer between first mesa and second mesa, can improve the stability of damping sewing table whole, and utilize damping layer to the vibration of sewing table is inhibited, guarantee stable support seam material, while, the working noise of overlock machine complete machine can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of overlock sewing machine technology, and in particular to a vibration damping sewing table and an overlock sewing machine. Background Technology

[0002] The sewing table in an overlock sewing machine primarily serves to support the fabric and work in conjunction with the sewing head to complete the sewing tasks. It typically forms the overlock sewing machine together with the sewing head and frame. The sewing table provides a stable support surface for the fabric, allowing it to move smoothly on the platform, enabling the needle and thread from the sewing head to perform precise stitching and hemming operations. However, during operation, the relative movement of the internal components generates vibrations, which are transmitted to the sewing table via a certain path. Since the sewing table is often a semi-enclosed and relatively large shell-like component, these vibrations are automatically amplified, generating noise and increasing the overall machine noise, thus causing noise pollution.

[0003] Currently, most overlock sewing machines use stainless steel sewing tables with an overall thickness of approximately 2mm. This structure does not effectively suppress table vibration and noise; in fact, its thin-walled, shell-like structure amplifies the vibration energy transmitted from the excitation source. This vibration is particularly pronounced during fabric changes, leading to significantly increased noise. Prolonged exposure to such machines can be detrimental to the physical and mental health of operators. Therefore, how to suppress sewing table vibration through a simple structure, ensuring stable fabric support while effectively reducing the overall operating noise of the overlock sewing machine, is a problem that needs to be solved by those in the field. Utility Model Content

[0004] The purpose of this invention is to provide a vibration-damping sewing table and an overlock sewing machine to suppress the vibration of the sewing table, ensure stable support of the sewing material, and effectively reduce the overall operating noise of the overlock sewing machine.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Vibration damping joint platform, including:

[0007] At least a first table and a second table are stacked along a first direction, the first table covering the outer side of the second table, and a vibration damping layer is provided between the first table and the second table. An installation space is provided on the side of the second table away from the first table for installation on an overlock sewing machine.

[0008] Alternatively, the damping layer may be made of pressure-sensitive adhesive.

[0009] Alternatively, the thickness of the damping layer is 0.05 mm.

[0010] Optionally, the thickness of both the first and second countertops is set to 1 mm.

[0011] Optionally, the first countertop has a receiving space on the side facing the second countertop, and the second countertop is located in the receiving space.

[0012] Optionally, the first countertop includes a first main board, a first side board, a first enclosure board, and a first extension board, wherein the first enclosure board and the first extension board are located on both sides of the first side board, and the three are connected to form the main body of the first enclosure board. The main body of the first enclosure board is perpendicular to the first main board, and the main body of the first enclosure board and the first main board enclose the accommodating space.

[0013] Optionally, the second platform includes a second main board, a second side board, a second enclosure board, and a second extension board. The second enclosure board and the second extension board are located on both sides of the second side board, and the three are connected to form the main body of the second enclosure board. The main body of the second enclosure board is perpendicular to the second main board, and the main body of the second enclosure board and the second main board enclose the installation space. The main body of the first enclosure board covers the outside of the main body of the second enclosure board, and the vibration damping layer is provided between the first main board and the second main board.

[0014] Optionally, a first clearance opening and a second clearance opening are provided through the first platform along the first direction, and a third clearance opening and a fourth clearance opening are provided through the second platform along the first direction, with the first clearance opening and the third clearance opening corresponding to each other, and the second clearance opening and the fourth clearance opening corresponding to each other.

[0015] Optionally, the second platform is further provided with a first guide surface and a second guide surface, both of which are inclined surfaces. The first guide surface is provided corresponding to the third clearance opening and is inclined toward the first platform in a direction that gradually approaches the third clearance opening. The second guide surface is provided corresponding to the fourth clearance opening and is inclined toward the first platform in a direction that gradually approaches the fourth clearance opening.

[0016] On the other hand, an overlock sewing machine includes the vibration damping sewing table and a frame, the frame extending into the mounting space to connect the vibration damping sewing table, and the second table surface abutting against the frame.

[0017] The beneficial effects of this utility model are:

[0018] This invention improves the overall stability of the vibration-damping sewing table by stacking a first and second table surface along a first direction and by setting a vibration-damping layer between the first and second table surfaces. The vibration-damping layer effectively suppresses vibrations generated during the operation of the overlock sewing machine, thereby reducing noise from the vibration of the sewing table. This ensures stable fabric support while allowing workers to operate smoothly, avoiding prolonged exposure to high noise levels that could negatively impact their health. Furthermore, the first table surface covers the outer side of the second table surface, preventing positional misalignment that could affect the stability of the vibration-damping sewing table during use. Additionally, the installation space on the side of the second table surface away from the first table surface facilitates the installation of the vibration-damping sewing table onto the overlock sewing machine. On the other hand, the overlock sewing machine includes a vibration-damping sewing table and a frame, and the frame extends into the installation space for a stable connection with the vibration-damping sewing table, thus achieving overall noise reduction for the overlock sewing machine. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the vibration damping joint platform described in this embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first platform in the vibration damping joint platform according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the second platform in the vibration damping joint platform according to an embodiment of the present invention;

[0022] Figure 4 This is a comparison diagram of the frequency band of the vibration damping joint table described in this embodiment of the invention and the table surface noise in the prior art;

[0023] Figure 5 This is a comparison diagram of the vibration spectrum of the vibration-damping joint table described in this embodiment of the utility model and the table surface in the prior art.

[0024] In the picture:

[0025] 10-First tabletop; 11-First main board; 111-First fixing part; 112-First extension part; 121-First side panel; 122-First enclosure panel; 123-First extension plate; 101-Accommodation space; 102-First clearance opening; 103-Second clearance opening;

[0026] 20-Second platform; 21-Second main board; 211-Second fixing part; 212-Second extension part; 213-First guide surface; 214-Second guide surface; 221-Second side plate; 222-Second enclosure plate; 223-Second extension plate; 201-Installation space; 202-Third clearance opening; 203-Fourth clearance opening. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between 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.

[0029] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and specific implementation methods.

[0031] like Figures 1 to 5 As shown, this embodiment provides a vibration damping seam platform, including a first platform 10 and a second platform 20 stacked at least along a first direction. The first platform 10 covers the outside of the second platform 20, and a vibration damping layer is provided between the first platform 10 and the second platform 20. An installation space 201 is provided on the side of the second platform 20 away from the first platform 10 for installation on an overlock sewing machine.

[0032] On the other hand, the overlock sewing machine includes a vibration damping sewing table and a frame, the frame extending into the installation space 201 to connect the vibration damping sewing table, and a second table surface 20 abutting against the frame.

[0033] Specifically, in this embodiment, by stacking the first tabletop 10 and the second tabletop 20 along the first direction, and by setting a vibration damping layer between the first tabletop 10 and the second tabletop 20, the overall stability of the vibration damping sewing table can be improved. The vibration damping layer can effectively suppress the vibration generated during the operation of the overlock sewing machine, thereby reducing the noise generated by the vibration of the vibration damping sewing table. This ensures stable fabric support while allowing workers to operate smoothly, avoiding long-term work in a noisy environment that could affect their physical and mental health. Simultaneously, in this embodiment, the first tabletop 10 covers the outside of the second tabletop 20, preventing positional shifts between the second tabletop 20 and the first tabletop 10 that could affect the stability of the vibration damping sewing table during use. Furthermore, the installation space 201 provided on the side of the second tabletop 20 away from the first tabletop 10 facilitates the installation of the vibration damping sewing table onto the overlock sewing machine. On the other hand, the overlock sewing machine includes a vibration damping sewing table and a frame, and the frame can be stably connected to the vibration damping sewing table by extending into the installation space 201, thereby achieving an overall noise reduction effect for the overlock sewing machine.

[0034] The specific structure of the vibration damping joint platform in this embodiment will be described below.

[0035] like Figures 1-3 As shown, in this embodiment, the vibration damping joint platform includes at least a first platform 10, a second platform 20, and a vibration damping layer. Specifically, in this embodiment, the height of the vibration damping joint platform is set in a first direction, the length in a second direction, and the width in a third direction, with each of the three directions being perpendicular to the others. Specifically, in this embodiment, the first platform 10 covers the outside of the second platform 20, and the vibration damping layer is disposed between the first platform 10 and the second platform 20 to achieve the vibration damping function of the vibration damping joint platform, avoid noise generation, and reduce harm to the health of workers. Specifically, in this embodiment, the first platform 10 and the second platform 20 are stacked along the first direction to provide space for the placement of the vibration damping layer. Exemplarily, a multi-layer platform stacking method can also be used to improve the vibration damping effect.

[0036] For example, in this embodiment, the damping layer is made of pressure-sensitive adhesive and has a thickness of 0.05 mm. In other embodiments, the damping layer may also be made of other materials with damping and adhesive effects, which are not limited here. Furthermore, the thickness of both the first tabletop 10 and the second tabletop 20 is set to 1 mm, and both are made of stainless steel. This ensures a stable connection between the first tabletop 10 and the second tabletop 20 under the action of the damping layer, forming a "sandwich" structure. Specifically, the damping layer has a small thickness to avoid large gaps between the first tabletop 10 and the second tabletop 20.

[0037] like Figure 2As shown, the first tabletop 10 includes a first main board 11, a first side plate 121, a first enclosure plate 122, and a first extension plate 123. The first enclosure plate 122 and the first extension plate 123 are located on both sides of the first side plate 121, and the three are connected to form the main body of the first enclosure plate. The main body of the first enclosure plate is set perpendicular to the first main board 11, and the main body of the first enclosure plate and the first main board 11 enclose a receiving space 101. The receiving space 101 is located on the side of the first tabletop 10 facing the second tabletop 20, and the second tabletop 20 is placed in the receiving space 101.

[0038] For example, the first side plate 121 extends along a second direction, while the first enclosure plate 122 and the first extension plate 123 both extend along a third direction. Specifically, the length of the first enclosure plate 122 along the third direction is less than the width of the first main plate 11, and the first extension plate 123 extends beyond the first main plate 11 along the third direction, thereby forming a semi-enclosed accommodating space 101. This facilitates subsequent installation on the overlock sewing machine, allows for easy operation by workers, and does not interfere with their work process. Furthermore, the first side plate 121 and the first enclosure plate 122 are connected by an arc transition, and the first side plate 121 and the first extension plate 123 are also connected by an arc transition to avoid injury to workers.

[0039] Furthermore, in this embodiment, a first fixing part 111 is provided on the side of the first main board 11 opposite to the first side plate 121, and a first clearance opening 102 and a second clearance opening 103 are respectively provided through the first direction on both sides of the first fixing part 111 along the second direction. Specifically, the first fixing part 111 extends out of the first main board 11 along the third direction, and the extension length is less than the extension length of the first extension plate 123 relative to the first main board 11. Furthermore, the first fixing part 111 is also provided with mounting holes to facilitate subsequent installation. Optionally, both the first clearance opening 102 and the second clearance opening 103 are provided with openings, and the openings are provided on the side of both opposite to the first side plate 121 to ensure smooth installation of the vibration damping sewing table on the overlock sewing machine.

[0040] Correspondingly, the second clearance opening 103 extends a first extension 112 in a third direction on the side opposite to the first fixing part 111, and the extension length of the first extension 112 relative to the first motherboard 11 is the same as the extension length of the first extension plate 123 relative to the first motherboard 11, thereby ensuring the stable installation of the first extension plate 123.

[0041] like Figure 3As shown, the second platform 20 includes a second main board 21, a second side panel 221, a second enclosure panel 222, and a second extension panel 223. The second enclosure panel 222 and the second extension panel 223 are located on both sides of the second side panel 221, and the three are connected to form the main body of the second enclosure panel. The main body of the second enclosure panel is perpendicular to the second main board 21, and the main body of the second enclosure panel and the second main board 21 enclose an installation space 201 for installation. Specifically, the main body of the first enclosure panel covers the outside of the main body of the second enclosure panel, and a vibration damping layer is provided between the first main board 11 and the second main board 21.

[0042] For example, the second side plate 221 extends along a second direction, while the second enclosure plate 222 and the second extension plate 223 both extend along a third direction. Specifically, the length of the second enclosure plate 222 along the third direction is less than the width of the second main plate 21, and the second extension plate 223 extends beyond the second main plate 21 along the third direction, thereby forming a semi-enclosed installation space 201. This facilitates subsequent installation on the overlock sewing machine, allows for easy operation by workers, and does not interfere with their work process. Furthermore, the second side plate 221 and the second enclosure plate 222 are connected by an arc transition, and the second side plate 221 and the second extension plate 223 are also connected by an arc transition to avoid injury to workers.

[0043] Furthermore, in this embodiment, a second fixing part 211 is provided on the side of the second main board 21 opposite to the second side plate 221, and a third clearance opening 202 and a fourth clearance opening 203 are respectively provided through the second direction on both sides of the second fixing part 211. Specifically, the first clearance opening 102 and the third clearance opening 202 are provided in a one-to-one correspondence, and the second clearance opening 103 and the fourth clearance opening 203 are provided in a one-to-one correspondence, so as to ensure that the first main board 11 and the second main board 21 can be aligned and installed, and at the same time facilitate installation on the overlock sewing machine.

[0044] Specifically, the second fixing part 211 extends out of the second main plate 21 in a third direction, and its extension length is less than the extension length of the second extension plate 223 relative to the second main plate 21. Furthermore, the second fixing part 211 is also provided with mounting holes, and the mounting holes of the second fixing part 211 correspond to the mounting holes of the first fixing part 111 to facilitate subsequent installation. Optionally, both the third clearance opening 202 and the fourth clearance opening 203 are provided with openings, and the openings are located on the side opposite to the second side plate 221 to ensure smooth installation of the vibration-damping seam board on the overlock sewing machine.

[0045] Correspondingly, the fourth clearance opening 203 extends a second extension 212 in a third direction on the side opposite to the second fixing part 211, and the extension length of the second extension 212 relative to the second main board 21 is the same as the extension length of the second extension plate 223 relative to the second main board 21, thereby ensuring the stable installation of the second extension plate 223.

[0046] Furthermore, the second main board 21 of the second table 20 is provided with a first guide surface 213 and a second guide surface 214 on the side opposite to the first table 10. Both are set as inclined surfaces. The first guide surface 213 is set to correspond with the third clearance opening 202 and is inclined towards the first table 10 in a direction that gradually approaches the third clearance opening 202. The second guide surface 214 is set to correspond with the fourth clearance opening 203 and is inclined towards the first table 10 in a direction that gradually approaches the fourth clearance opening 203. This ensures that the inner side of the first main board 11 and the outer side of the second main board 21 are planes that correspond to each other, which facilitates the application of the adhesive in the vibration damping layer and also facilitates the avoidance or fixing of the vibration damping seam table to the overlock sewing machine. The specific settings can be configured according to actual needs, which will not be elaborated here.

[0047] Therefore, the vibration damping layer can reduce vibration and noise, and the sandwich between the upper and lower table surfaces plays a similar role in energy absorption and vibration reduction. When the vibration generated during the operation of the overlock sewing machine is transmitted to the vibration damping sewing table through the transmission path of the frame, needle plate, etc., the surface vibration of the vibration damping sewing table is buffered and absorbed by the vibration damping layer in the sandwich, and the table surface vibration of the vibration damping sewing table is suppressed, thereby significantly reducing radiated noise.

[0048] like Figure 4 As shown, the vibration reduction and noise reduction scheme of the vibration-damping table in this embodiment was used in a vibration and noise comparison test on a C7 overlock sewing machine at rated speed and with the machine head noise at 1 / 3 octave band. The test results show that the scheme of this embodiment significantly improves the vibration and noise of the machine compared to the original state. Specifically, dark black represents the data of the scheme in this embodiment, and light gray represents the test data of the original state machine. The noise level generated by the scheme of this embodiment is 80.9 dB, compared to 83.3 dB of the noise level generated by the original state machine, with an overall sound pressure level reduction of 2.4 dB(A). The main contributing frequency band of table vibration radiation noise, 800-2800 Hz, is also reduced by 3.2 dB(A), indicating a significant improvement in subjective hearing.

[0049] like Figure 5 The diagram shows a comparison of tabletop vibration spectrum data. The solution in this embodiment significantly reduces tabletop vibration compared to the original machine. Specifically, dark black represents the data from this embodiment, and light gray represents the test data from the original machine. In this embodiment, the Z-axis vibration of the tabletop decreased from 5.2g to 3.0g, a reduction of 2.2g, or 42%. Furthermore, to increase the reliability of the test results from this embodiment, three overlock sewing machines were selected for a vibration and noise comparison test before and after the tabletop solution change. The test results are shown in the table below.

[0050] Table 1

[0051]

[0052] As shown in the table above, the solution adopted in this embodiment can effectively reduce table vibration, thereby reducing the structural radiated noise of the entire machine. For example, the average reduction in sound pressure level at the standard point of the machine head can reach 2.0 dB(A), and the noise energy in the radiated noise contribution frequency band 800-2800Hz is reduced by 2.5 dB(A), resulting in a significant improvement in hearing and performance.

[0053] The specific structure of the seam platform in this embodiment will be described below.

[0054] The overlock sewing machine includes a vibration-damping sewing table and a frame. Specifically, the frame extends into the installation space 201 to connect the vibration-damping sewing table, and the second table surface 20 abuts against the frame, thereby ensuring the stable installation of the vibration-damping sewing table in the overlock sewing machine. Furthermore, the abutment between the second table surface 20 and the frame exposes the outer surface of the first table surface 10 to the overlock sewing machine to support the sewing material for the operator's sewing work.

[0055] Compared to existing solutions, this embodiment employs a "sandwich" structure, which effectively reduces tabletop vibration and radiated noise, resulting in significant optimization. Furthermore, the sandwich design maintains the overall thickness of the seam platform, increasing only the cost of the special pressure-sensitive adhesive in the middle, while requiring no other modifications. This optimized solution is cost-effective and highly versatile. Simultaneously, the overall machine noise is reduced by approximately 2 dB(A), effectively improving overall machine performance and product competitiveness, and significantly reducing user discomfort during prolonged work, thus effectively protecting user health and well-being.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vibration damping joint platform, characterized in that, include: At least a first tabletop (10) and a second tabletop (20) are stacked along a first direction. The first tabletop (10) covers the outside of the second tabletop (20), and a vibration damping layer is provided between the first tabletop (10) and the second tabletop (20). An installation space (201) is provided on the side of the second tabletop (20) away from the first tabletop (10) for installation on an overlock sewing machine.

2. The vibration damping joint platform according to claim 1, characterized in that, The vibration damping layer is made of pressure-sensitive adhesive.

3. The vibration damping joint platform according to claim 1, characterized in that, The thickness of the damping layer is 0.05 mm.

4. The vibration damping joint platform according to claim 1, characterized in that, The thickness of both the first tabletop (10) and the second tabletop (20) is set to 1 mm.

5. The vibration damping joint platform according to claim 1, characterized in that, The first tabletop (10) has a receiving space (101) on the side facing the second tabletop (20), and the second tabletop (20) is located in the receiving space (101).

6. The vibration damping joint platform according to claim 5, characterized in that, The first tabletop (10) includes a first main board (11), a first side board (121), a first enclosure board (122), and a first extension board (123), wherein the first enclosure board (122) and the first extension board (123) are respectively located on both sides of the first side board (121), and the three are connected to form the main body of the first enclosure board. The main body of the first enclosure board is set perpendicular to the first main board (11), and the main body of the first enclosure board and the first main board (11) enclose the accommodating space (101).

7. The vibration damping joint platform according to claim 6, characterized in that, The second tabletop (20) includes a second main board (21), a second side board (221), a second enclosure board (222), and a second extension board (223). The second enclosure board (222) and the second extension board (223) are located on both sides of the second side board (221), and the three are connected to form the second enclosure board body. The second enclosure board body is set perpendicular to the second main board (21), and the second enclosure board body and the second main board (21) enclose the installation space (201). The first enclosure board body covers the outside of the second enclosure board body, and the vibration damping layer is provided between the first main board (11) and the second main board (21).

8. The vibration damping joint platform according to claim 1, characterized in that, The first tabletop (10) is provided with a first clearance opening (102) and a second clearance opening (103) through the first direction. The second tabletop (20) is provided with a third clearance opening (202) and a fourth clearance opening (203) through the first direction. The first clearance opening (102) and the third clearance opening (202) are provided in a one-to-one correspondence. The second clearance opening (103) and the fourth clearance opening (203) are provided in a one-to-one correspondence.

9. The vibration damping joint platform according to claim 8, characterized in that, The second platform (20) is also provided with a first guide surface (213) and a second guide surface (214), both of which are set as inclined surfaces. The first guide surface (213) is set in correspondence with the third clearance opening (202) and is inclined toward the first platform (10) in a direction that gradually approaches the third clearance opening (202) in a third direction. The second guide surface (214) is set in correspondence with the fourth clearance opening (203) and is inclined toward the first platform (10) in a direction that gradually approaches the fourth clearance opening (203) in a third direction in a third direction.

10. An overlock sewing machine, characterized in that, Includes a vibration damping joint platform and a frame as described in any one of claims 1-9, the frame extending into the mounting space (201) to connect the vibration damping joint platform, the second platform (20) abutting against the frame.

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