High-stability low-noise embroidery machine head

Abstract

This invention provides a highly stable, low-noise embroidery machine head, comprising a housing with a drive shaft connected to it. A needle bar drive cam and a presser foot drive cam are connected to the drive shaft. The presser foot drive cam is located outside the needle bar drive cam. Both the needle bar drive cam and the presser foot drive cam employ a high-speed bearing structure and are eccentrically opposed. This highly stable, low-noise embroidery machine head utilizes a crank mechanism made of double iron materials to simultaneously drive the needle bar and presser foot, making the cam movement more stable. The movement between the two cams can mutually cancel out axial centrifugal force, effectively controlling axial vibration and reducing vibration and noise generated during machine operation.

Description

Technical Field

[0001] This invention relates to the field of embroidery machine technology, specifically to a highly stable, low-noise embroidery machine head. Background Technology

[0002] An embroidery machine is a mechanical device specifically designed for automated or semi-automated embroidery work on fabrics. It can precisely embroider complex patterns, text, or images on materials such as fabric and leather according to pre-designed patterns and color schemes.

[0003] Currently, the principle of controlling the presser foot movement of embroidery machines is based on a cam as the driving source, which is transmitted through the connection between the linkages. This cam is made of POM plastic, which has disadvantages such as insufficient strength and easy deformation during high-speed movement, ultimately causing problems such as damage to parts and excessive noise. The current structure can no longer meet the needs of the development of embroidery machines.

[0004] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0005] The purpose of this invention is to provide a highly stable and low-noise embroidery machine head to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-stability, low-noise embroidery machine head, comprising a machine housing, a drive shaft connected to the machine housing, a needle bar drive cam and a presser foot drive cam connected to the drive shaft, the presser foot drive cam being located outside the needle bar drive cam, the needle bar drive cam and the presser foot drive cam adopting a high-speed bearing structure and being in an eccentric opposing state.

[0007] Preferably, a connecting rod is connected to the housing, and a guide rod fixing pin is provided at the connection between the connecting rod and the housing. One end of the connecting rod is connected to the housing, and the other end is connected to the presser foot drive cam.

[0008] Preferably, the presser foot drive cam is further connected to a second connecting rod. The first connecting rod is connected to the inner side of the presser foot drive cam, and the second connecting rod is connected to the outer side of the presser foot drive cam. One end of the second connecting rod is connected to the presser foot drive cam, and the other end is connected to a third connecting rod. The second and third connecting rods are connected by a pivot pin. One end of the third connecting rod is connected to the second connecting rod, and the other end is connected to a fourth connecting rod. The fourth connecting rod is connected to a presser foot driver.

[0009] Preferably, the third link is connected to the outside of the second link, and the fourth link is connected to the inside of the third link.

[0010] Preferably, a presser foot driver guide roller is provided on the outer side of the presser foot driver, a presser foot needle rod driver guide is installed on the outer side of the housing, a presser foot driver guide groove is provided on the inner side of the presser foot needle rod driver guide, and the presser foot driver guide roller is located in the presser foot driver guide groove and is slidably connected to it.

[0011] Preferably, the housing is further equipped with a needle bar driver and a needle bar driver guide. The needle bar driver is provided with a needle bar driver guide roller, and the needle bar driver guide is provided with a needle bar driver guide groove. The needle bar driver guide roller is located in the needle bar driver guide groove and is slidably connected to it.

[0012] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The present invention provides a high-stability and low-noise embroidery machine head, which uses a crank mechanism made of double iron materials to simultaneously drive the needle bar and the presser foot, making the cam movement more stable. The movement between the two cams can cancel each other out the axial centrifugal swing, effectively controlling the vibration generated in the axial direction and reducing the vibration and noise generated when the equipment is working. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of existing technology; Figure 2 This is a schematic diagram of the machine head of the present invention; Figure 3 This is a schematic diagram of the cam engagement. Figure 4 This is a schematic diagram of the presser foot transmission mechanism; Figure 5 This is a schematic diagram of the presser foot guide mechanism; Figure 6 This is a schematic diagram of the needle bar guide mechanism; In the diagram: 101 Housing; 102 Needle bar drive cam; 103 Presser foot drive cam; 104 Guide link fixing pin; 105 Link 1; 106 Link 2; 107 Swing link fulcrum pin; 108 Swing link 3; 109 Link 4; 110 Presser foot driver; 110-1 Presser foot driver guide; 110-2 Presser foot driver guide groove; 110-3 Presser foot driver guide roller; 130 Needle bar driver; 131 Needle bar driver guide; 131-1 Needle bar driver guide groove; 131-2 Needle bar driver guide roller; 203 Current technology presser foot drive cam. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0015] This invention provides a highly stable, low-noise embroidery machine head, such as... Figure 1-6As shown, the device includes a housing 101, on which a drive shaft is connected. A needle bar drive cam 102 and a presser foot drive cam 103 are connected to the drive shaft. The presser foot drive cam 103 is located outside the needle bar drive cam 102. Both the needle bar drive cam 102 and the presser foot drive cam 103 employ a high-speed bearing structure and are eccentrically opposed. A crank mechanism made of double iron materials simultaneously drives the needle bar and the presser foot, which are eccentrically opposed in real time during movement. Figure 3 This ensures that the two cams are in a balanced state during axial movement, effectively reducing the vibration generated by axial movement and making the cam movement more stable. The movement between the two cams can cancel each other out the axial centrifugal swing, reducing the vibration and noise generated when the equipment is working.

[0016] Reference Appendix Figure 2-4 A connecting rod 105 is connected to the housing 101. A guide rod fixing pin 104 is provided at the connection between the connecting rod 105 and the housing 101. During movement, the connecting rod 105 moves up and down around the guide rod fixing pin 104. One end of the connecting rod 105 is connected to the housing 101, and the other end is connected to the pressure foot drive cam 103. The presser foot drive cam 103 is also connected to a second link 106. A first link 105 is connected to the inner side of the presser foot drive cam 103, and a second link 106 is connected to the outer side of the presser foot drive cam 103. One end of the second link 106 is connected to the presser foot drive cam 103, and the other end is connected to a third link 108. The second link 106 and the third link 108 are connected by a swing link pivot pin 107. One end of the third link 108 is connected to the second link 106, and the other end is connected to a fourth link 109. The fourth link 109 is connected to the presser foot driver 110.

[0017] The presser foot drive cam 103 connects to the first connecting rod 105, serving as the motion drive source for the first connecting rod 105. When the presser foot drive cam 103 rotates eccentrically, it causes the first connecting rod 105 to swing up and down. Simultaneously, the presser foot drive cam 103 is constrained by the first connecting rod 105, moving according to a set track gauge. The constrained end of the presser foot drive cam 103 is connected to the second connecting rod 106, causing the second connecting rod 106 to move up and down. The other end of the second connecting rod 106 is connected to the third connecting rod 108, and the central fulcrum of the third connecting rod 108 is mounted on the swing connecting rod fulcrum pin 107. The third connecting rod 108 is also connected to the presser foot driver 110 via the fourth connecting rod 109.

[0018] Through the above connection and transmission, the presser foot mechanism forms an effective transmission chain, which works in conjunction with the needle bar to perform sewing work.

[0019] By controlling the coordinated transmission between the linkages, an effective motion pattern is formed. The entire linkage transmission part is connected by bearings, ensuring that the linkage transmission position is always lubricated during long-term high-speed operation of the embroidery machine, reducing wear on parts.

[0020] It should be noted that link 3 108 is connected to the outside of link 2 106, and link 4 109 is connected to the inside of link 3 108.

[0021] Reference Appendix Figure 5 The presser foot driver 110 has a presser foot driver guide roller 110-3 on its outer side, and a presser foot needle rod driver guide 110-1 is mounted on the outer side of the housing 101. A presser foot driver guide groove 110-2 is formed on the inner side of the presser foot needle rod driver guide 110-1. The presser foot driver guide roller 110-3 is located within the presser foot driver guide groove 110-2 and is slidably connected to it. When the presser foot driver 110 moves up and down, it is restricted by the presser foot driver guide 110-1 to prevent left and right swaying. This avoids the problem that the presser foot driver 110, which is centrally mounted on a circular pin, is prone to left and right deflection during high-speed movement, causing easy damage to the connecting rod 109.

[0022] Reference Appendix Figure 6 The housing 101 is also equipped with a needle bar driver 130 and a needle bar driver guide 131. The needle bar driver 130 has a needle bar driver guide roller 131-2, and the needle bar driver guide 131 has a needle bar driver guide groove 131-1. The needle bar driver guide roller 131-2 is located within the needle bar driver guide groove 131-1 and is slidably connected to it. Similarly, when the needle bar driver 130 moves up and down, it is restricted by the needle bar driver guide 131 to prevent it from swaying left and right. The connection structure between the needle bar drive and the presser foot drive is similar, so the specific connecting rods of the presser foot drive will not be described further.

[0023] This invention provides a highly stable and low-noise embroidery machine head, which uses a crank mechanism made of double iron materials to simultaneously drive the needle bar and presser foot, making the cam movement more stable. The movement between the two cams can cancel each other out the axial centrifugal swing, effectively controlling the vibration generated in the axial direction and reducing the vibration and noise generated when the equipment is working.

[0024] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A highly stable, low-noise embroidery machine head, characterized in that: Includes a housing (101), on which a drive shaft is connected, and on which a needle bar drive cam (102) and a presser foot drive cam (103) are connected. The presser foot drive cam (103) is located outside the needle bar drive cam (102). The needle bar drive cam (102) and the presser foot drive cam (103) adopt a high-speed bearing structure and are in an eccentric opposing state.

2. The high-stability, low-noise embroidery machine head according to claim 1, characterized in that: A connecting rod (105) is connected to the housing (101). A guide rod fixing pin (104) is provided at the connection between the connecting rod (105) and the housing (101). One end of the connecting rod (105) is connected to the housing (101), and the other end is connected to the presser foot drive cam (103).

3. The high-stability, low-noise embroidery machine head according to claim 2, characterized in that: The presser foot drive cam (103) is also connected to a second link (106). The first link (105) is connected to the inner side of the presser foot drive cam (103), and the second link (106) is connected to the outer side of the presser foot drive cam (103). One end of the second link (106) is connected to the presser foot drive cam (103), and the other end is connected to a third link (108). The second link (106) and the third link (108) are connected by a swing link pivot pin (107). One end of the third link (108) is connected to the second link (106), and the other end is connected to a fourth link (109). The fourth link (109) is connected to a presser foot driver (110).

4. The high-stability, low-noise embroidery machine head according to claim 3, characterized in that: Link three (108) is connected to the outside of link two (106), and link four (109) is connected to the inside of link three (108).

5. The high-stability, low-noise embroidery machine head according to claim 3, characterized in that: The outer side of the presser foot driver (110) is provided with a presser foot driver guide roller (110-3), and the outer side of the housing (101) is provided with a presser foot needle rod driver guide (110-1). The inner side of the presser foot needle rod driver guide (110-1) is provided with a presser foot driver guide groove (110-2). The presser foot driver guide roller (110-3) is located in the presser foot driver guide groove (110-2) and is slidably connected to it.

6. The high-stability, low-noise embroidery machine head according to claim 5, characterized in that: The housing (101) is also equipped with a needle bar driver (130) and a needle bar driver guide (131). The needle bar driver (130) is provided with a needle bar driver guide roller (131-2). The needle bar driver guide (131) is provided with a needle bar driver guide groove (131-1). The needle bar driver guide roller (131-2) is located in the needle bar driver guide groove (131-1) and is slidably connected to it.

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