Connecting structure of needle plate and cushion block and sewing machine

Abstract

The utility model provides a connecting structure of a needle plate and a cushion block and a sewing machine, and belongs to the technical field of sewing equipment. The connecting structure comprises a needle plate, a first cushion block and a second cushion block, one end and the other end of the needle plate are fixed to the first cushion block and the second cushion block respectively, and a coating is arranged at the joint of the first cushion block and the needle plate or / and a coating is arranged at the joint of the second cushion block and the needle plate. According to the connecting structure, the coating is arranged at the contact position of the cushion block and the needle plate, so that parts are in full and tight contact, the contact area between the two parts is increased, the connecting stability is well improved, the vibration amplitude is reduced, and noise is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of sewing equipment technology, and relates to a connection structure between a needle plate and a pad block and a sewing machine. Background Technology

[0002] In sewing equipment, the needle plate often needs to be connected and fixed to the knife holder through a pad. Regarding the connection structure between the needle plate and the pad, you can refer to the overlock sewing machine provided in the patent document with application number 201621024053.8. It includes a machine base, a knife holder fixed on the machine base, a pad fixedly connected to the upper surface of the knife holder, and a needle plate fixedly connected to the upper surface of the pad. The pad includes a front pad fixedly connected to the front end of the needle plate and a rear pad fixedly connected to the rear end of the needle plate.

[0003] The shortcomings of the existing technology are that the contact area between the needle plate and the pad is small, and the connection between the two is not stable enough, resulting in large shaking between the parts, which can easily generate noise, wear on the parts, and affect their service life. Summary of the Invention

[0004] This utility model addresses the aforementioned problems in the prior art by providing a connection structure between a needle plate and a pad. The technical problem this utility model aims to solve is: how to increase the stability of the connection.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A connection structure for a needle plate and a pad, the connection structure comprising a needle plate, a first pad and a second pad, wherein one end and the other end of the needle plate are respectively fixed to the first pad and the second pad, characterized in that a coating is provided at the connection between the first pad and the needle plate or / and a coating is provided at the connection between the second pad and the needle plate.

[0007] In this connection structure between the needle plate and the pad, a coating is provided at the connection between pad one and the needle plate (the coating can be provided on the surface of pad one or the surface of the needle plate), or a coating is provided at the connection between pad two and the needle plate (the coating can be provided on the surface of pad two or the surface of the needle plate). The coating makes the pad (pad one or pad two) and the needle plate more tightly and fully contacted, increases the roughness and friction of the contact surface between the pad and the needle plate, and greatly improves the stability of the connection.

[0008] In another embodiment, the coating is applied at both the connection between pad one and the needle plate and the connection between pad two and the needle plate.

[0009] This connection structure, by applying a coating at the contact point between the pad and the needle plate, ensures a tight and sufficient contact between the components, increases the contact area between the two components, significantly improves the stability of the connection, thereby reducing vibration amplitude and noise generation.

[0010] In addition, this connection structure can also increase the contact area between the needle plate and the pad (pad one and pad two) by increasing their size.

[0011] In the above-mentioned connection structure of needle plate and pad, pad one is fixed to one end of needle plate by screw one, and pad two is also fixed to the other end of needle plate by screw one.

[0012] Pad 1 and Pad 2 are detachably fixed to the needle plate by screw 1. This structure is easy to assemble and disassemble and has a stable connection.

[0013] Adjusting the tightness of screw one with a screwdriver can adjust the locking force between the pad (pad one or pad two) and the needle plate. Tightening screw one increases the contact pressure between pad one (or pad two) and the needle plate, resulting in a tighter connection between them.

[0014] In the above-mentioned connection structure of needle plate and pad, a knife holder is also included. The pad one and the pad two are fixed on the knife holder by the screw two and the screw three, respectively. The pad one and the pad two are respectively provided with mounting hole one and mounting hole two. The screw two and the screw three are respectively passed through the mounting hole one and the mounting hole two. There is a gap between the screw two and the mounting hole one, and there is also a gap between the screw three and the mounting hole two.

[0015] When loosening screw two, the relative position of shim one and tool holder can be adjusted in the front-back or left-right direction to increase the contact area between them, allowing shim one and tool holder to make more full contact. The relative position of shim two and tool holder can also be adjusted in the front-back or left-right direction to increase the contact area between them, allowing shim two and tool holder to make more full contact, further improving the stability of the connection.

[0016] In the above-mentioned connection structure of a needle plate and a pad, the second pad is provided with a receiving groove, the second mounting hole is provided on the bottom wall of the receiving groove, and the outer end of the third screw is located in the receiving groove.

[0017] After screw three is tightened, the outer end of screw three is located in the receiving groove. Screw three does not occupy additional space, making the entire connection structure more compact.

[0018] In the above-mentioned connection structure between the needle plate and the pad, there are two or more screws 2 and two or more screws 3. The screw shank of each screw 2 passes through the corresponding mounting hole 1 and is spaced apart from the mounting hole 1. The screw shank of each screw 3 passes through the corresponding mounting hole 2 and is spaced apart from the mounting hole 2.

[0019] Screws two and three are multiple, with multiple screws two fixing pad one to the needle plate, and multiple screws three fixing pad two to the needle plate, further improving the stability of the connection between the pad and the needle plate.

[0020] In the above-mentioned connection structure of needle plate and pad, the pad includes a block 1 and a block 2 connected to each other. The block 1 is fixed to the knife holder by screw 3. The needle plate is fixed on the inner half of the block 2. The outer half of the block 2 extends outward from one side of the knife holder. The outer half of the block 2 is provided with mounting hole 3.

[0021] Mounting hole three is located on the upper outer side of the tool holder. It is used to install other components. The location of mounting hole three on the upper outer side of the tool holder can avoid interference with the tool holder when installing other components, which greatly improves the ease of installation.

[0022] This utility model also provides a sewing machine, which includes any of the above-described connection structures for the needle plate and the pad.

[0023] Compared with the prior art, the advantages of this utility model are as follows:

[0024] 1. This connection structure, by applying a coating at the contact point between the pad and the needle plate, ensures a tight and sufficient contact between the components, increases the contact area between the two components, greatly improves the stability of the connection, thereby reducing vibration amplitude and noise generation.

[0025] 2. This connection structure allows for adjustment of the relative positions of pad one and the tool holder in the front-back or left-right directions, as well as pad two and the tool holder in the front-back or left-right directions. This increases the contact area between the pad and the tool holder, allowing for more thorough contact and improving the stability of the connection. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the connection structure;

[0027] Figure 2 This is a schematic diagram of the structure of pad block one;

[0028] Figure 3 This is a schematic diagram of the structure of pad block two.

[0029] In the diagram: 1. Needle plate, 2. Pad 1, 3. Pad 2, 4. Screw 1, 5. Tool holder, 6. Screw 2, 7. Screw 3, 8. Mounting hole 1, 9. Mounting hole 2, 10. Receiving groove, 11. Block 1, 12. Block 2, 13. Mounting hole 3. Detailed Implementation

[0030] 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.

[0031] like Figure 1 As shown, the connection structure includes a needle plate 1, a pad 2, and a pad 3. One end of the needle plate 1 and the other end are fixed to the pad 2 and the pad 3, respectively. The connection between the pad 2 and the needle plate 1 is provided with a coating (not shown) or / and the connection between the pad 3 and the needle plate 1 is provided with a coating (not shown).

[0032] In the connection structure between the needle plate 1 and the pad, a coating is provided at the connection between the pad 2 and the needle plate 1 (the coating can be provided on the surface of the pad 2 or the surface of the needle plate 1), or a coating is provided at the connection between the pad 3 and the needle plate 1 (the coating can be provided on the surface of the pad 3 or the surface of the needle plate 1). The coating makes the pad (pad 2 or pad 3) and the needle plate 1 more closely and fully contacted, increases the roughness and friction of the contact surface between the pad and the needle plate 1, and greatly improves the stability of the connection.

[0033] In another embodiment, the coating is applied at both the connection between pad 2 and needle plate 1 and the connection between pad 3 and needle plate 1.

[0034] This connection structure, by applying a coating at the contact point between the pad and the needle plate 1, ensures a tight and sufficient contact between the components, increases the contact area between the two components, and significantly improves the stability of the connection, thereby reducing vibration amplitude and noise generation.

[0035] In addition, the contact area between the needle plate 1 and the pad (pad 1 2 and pad 2 3) can be increased by increasing the size of the connection structure.

[0036] like Figure 1 As shown, in this embodiment, pad 2 is fixed to one end of needle plate 1 by screw 4, and pad 3 is also fixed to the other end of needle plate 1 by screw 4.

[0037] Pad 1 2 and Pad 2 3 are detachably fixed to needle plate 1 by screw 1 4. This structure is easy to assemble and disassemble and has a stable connection.

[0038] Adjusting the tightness of screw 4 with a screwdriver can adjust the locking force between the pad (pad 2 or pad 3) and the needle plate 1. Tightening screw 4 increases the contact pressure between pad 2 (or pad 3) and the needle plate 1, resulting in a tighter connection between them.

[0039] like Figure 1 , 2 As shown in Figure 3, this embodiment also includes a tool holder 5. The first pad 2 and the second pad 3 are fixed to the tool holder 5 by the second screw 6 and the third screw 7, respectively. The first pad 2 and the second pad 3 are respectively provided with the first mounting hole 8 and the second mounting hole 9. The second screw 6 and the third screw 7 are respectively inserted into the first mounting hole 8 and the second mounting hole 9. There is a gap between the screw of the second screw 6 and the first mounting hole 8, and there is also a gap between the screw of the third screw 7 and the second mounting hole 9.

[0040] When loosening screw 26, the relative positions of pad 12 and tool holder 5 can be adjusted in the front-back or left-right direction to increase their contact area and make pad 12 and tool holder 5 more fully in contact. The relative positions of pad 23 and tool holder 5 can also be adjusted in the front-back or left-right direction to increase their contact area and make pad 23 and tool holder 5 more fully in contact, further improving the stability of the connection.

[0041] As shown in 1 and 3, in this embodiment, the pad 2 3 is provided with a receiving groove 10, the mounting hole 2 9 is provided on the bottom wall of the receiving groove 10, and the outer end of the screw 3 7 is located in the receiving groove 10.

[0042] After screw 7 is tightened, the outer end of screw 7 is located in the receiving groove 10. Screw 7 does not occupy additional space, making the entire connection structure more compact.

[0043] like Figure 1 As shown, in this embodiment, there are two screws 6 and two screws 7. The screw shank of each screw 6 passes through the corresponding mounting hole 8 and is spaced apart from the mounting hole 8. The screw shank of each screw 7 passes through the corresponding mounting hole 9 and is spaced apart from the mounting hole 9. In other embodiments, there are more than two screws 6 and more than two screws 7.

[0044] Screw 2 6 and screw 3 7 are multiple, with multiple screws 2 6 fixing pad 1 2 to needle plate 1, and multiple screws 3 7 fixing pad 2 3 to needle plate 1, further improving the stability of the connection between pad and needle plate 1.

[0045] like Figure 1 and 3As shown, in this embodiment, the pad 2 3 includes a block 1 11 and a block 2 12 connected to each other. The block 1 11 is fixed to the knife holder 5 by a screw 3 7. The needle plate 1 is fixed to the inner half of the block 2 12. The outer half of the block 2 12 extends outward from one side of the knife holder 5. The outer half of the block 2 12 is provided with a mounting hole 3 13.

[0046] Mounting hole 313 is located on the upper outer side of tool holder 5. It is used to install other components. The location of mounting hole 313 on the upper outer side of tool holder 5 can avoid interference with tool holder 5 when installing other components, which greatly improves the ease of installation.

[0047] This utility model also provides a sewing machine, which includes any of the above-described connection structures for the needle plate and the pad.

[0048] 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 connection structure between a needle plate and a pad, the connection structure comprising a needle plate (1), a first pad (2) and a second pad (3), wherein one end and the other end of the needle plate (1) are respectively fixed to the first pad (2) and the second pad (3), characterized in that, The connection between pad 1 (2) and needle plate (1) is provided with a coating or / and the connection between pad 2 (3) and needle plate (1) is provided with a coating.

2. The connection structure between the needle plate and the pad block according to claim 1, characterized in that, The pad 1 (2) is fixed to one end of the needle plate (1) by screw 1 (4), and the pad 2 (3) is also fixed to the other end of the needle plate (1) by screw 1 (4).

3. The connection structure between the needle plate and the pad according to claim 1 or 2, characterized in that, It also includes a tool holder (5), wherein the first pad (2) and the second pad (3) are fixed on the tool holder (5) by the second screw (6) and the third screw (7) respectively. The first pad (2) and the second pad (3) are respectively provided with the first mounting hole (8) and the second mounting hole (9). The second screw (6) and the third screw (7) are respectively inserted into the first mounting hole (8) and the second mounting hole (9). There is a gap between the screw of the second screw (6) and the first mounting hole (8), and there is also a gap between the screw of the third screw (7) and the second mounting hole (9).

4. The connection structure between the needle plate and the pad block according to claim 3, characterized in that, The pad block 2 (3) has a receiving groove (10), the mounting hole 2 (9) is opened on the bottom wall of the receiving groove (10), and the outer end of the screw 3 (7) is located in the receiving groove (10).

5. The connection structure between the needle plate and the pad according to claim 3, characterized in that, There are two or more screws (6) and two or more screws (7). The screw of each screw (6) passes through the corresponding mounting hole (8) and is spaced apart from the mounting hole (8). The screw of each screw (7) passes through the corresponding mounting hole (9) and is spaced apart from the mounting hole (9).

6. The connection structure between the needle plate and the pad according to claim 3, characterized in that, The pad block 2 (3) includes a block 1 (11) and a block 2 (12) connected to each other. The block 1 (11) is fixed to the knife holder (5) by screw 3 (7). The needle plate (1) is fixed on the inner half of the block 2 (12). The outer half of the block 2 (12) extends outward from one side of the knife holder (5). The outer half of the block 2 (12) is provided with mounting hole 3 (13).

7. A sewing machine, characterized in that, The sewing machine includes a connection structure between the needle plate and the pad as described in any one of claims 1-6.

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