A type of embroidery machine head drive mechanism

Abstract

This utility model discloses a head drive mechanism for an embroidery machine. Through the coordinated arrangement of a main shaft assembly, an active spiral bevel gear, a driven spiral bevel gear assembly, a needle bar drive crank, a needle bar drive rod, upper and lower component assemblies, and the needle bar, the radius of the needle bar drive crank is expanded to a preset threshold. By effectively increasing the radius of the needle bar drive crank, the stroke of the needle bar can be increased. The needle bar drive rod converts the circular motion of the needle bar drive crank into the linear motion of the needle bar. One end of the needle bar drive rod can be detachably installed on the end of the needle bar drive crank away from the needle bar drive crank. By adjusting the installation position of the needle bar drive rod and the needle bar drive crank, the stroke of the needle bar and the force transmission efficiency can be further optimized, improving the ability of the embroidery needle to penetrate thick materials and effectively avoiding the situation where the embroidery needle cannot penetrate the thick material when embroidering thick materials.

Description

Technical Field

[0001] This utility model relates to the technical field of embroidery machines, specifically to an embroidery machine head drive mechanism. Background Technology

[0002] An embroidery machine is an automated device used to embroider patterns onto fabrics. It is widely used in the clothing, home textiles, footwear, and handicrafts industries. Through automated technology, it embroiders designed patterns onto fabric, replacing traditional hand embroidery and significantly improving production efficiency and embroidery precision.

[0003] In current embroidery processes, the main shaft of a computerized embroidery machine drives an eccentric cam in the machine head to rotate. Through a linkage mechanism, the needle bar moves the embroidery needle up and down to complete the embroidery work. However, the existing cam has a short stroke (the height difference between the highest and lowest points of the cam) and a small range of motion for the needle bar, resulting in a reduced ability of the embroidery needle to penetrate thick materials. This leads to situations where the embroidery needle cannot penetrate the thick material when embroidering on thick materials. Utility Model Content

[0004] Therefore, it is necessary to provide a head drive mechanism for an embroidery machine. This can solve the problem in the prior art where the embroidery needle cannot penetrate thick materials during embroidery due to the short cam stroke.

[0005] An embroidery machine head drive mechanism includes a gearbox, a main shaft assembly, a driving spiral bevel gear, a driven spiral bevel gear assembly, a needle bar drive crank, a needle bar drive rod, upper and lower component assemblies, and a needle bar. The main shaft assembly is mounted on the gearbox. The driving spiral bevel gear is mounted on the main shaft assembly and is driven to rotate by the main shaft assembly. The driving spiral bevel gear meshes with the driven spiral bevel gear assembly. The needle bar drive crank is mounted on the driven spiral bevel gear assembly and is driven to rotate along a preset direction and angle by the driven spiral bevel gear assembly. One end of the needle bar drive rod is detachably mounted on the needle bar drive crank at the end away from the needle bar drive crank, and the other end is detachably connected to the upper and lower component assemblies. The needle bar passes through the upper and lower component assemblies, and the radius of the needle bar drive crank is expanded to a preset threshold.

[0006] In one embodiment, the top surface of the gearbox has a receiving hole for receiving the driven helical bevel gear assembly.

[0007] In one embodiment, the spindle assembly includes a spindle and a fastening collar, the spindle passing through the active spiral bevel gear, and the fastening collar being fitted onto the outer layer of the active spiral bevel gear.

[0008] In one embodiment, the driven spiral bevel gear assembly includes a driven bearing ring and a driven spiral bevel gear, the driven bearing ring being sleeved on the driven spiral bevel gear.

[0009] In one embodiment, the needle bar drive rod has a groove, the area of ​​which gradually increases as it approaches the needle bar drive crank.

[0010] In one embodiment, the upper and lower component assembly includes an upper and lower component seat, upper and lower components, and a bushing. The bottom of the upper and lower component seat is detachably connected to one end of the needle bar drive rod. The two ends of the bushing are respectively inserted into the upper and lower component seat and the upper and lower components, and the needle bar is inserted into the bushing.

[0011] In one embodiment, one end of the upper and lower component seats has a notch.

[0012] In one embodiment, the needle bar is a hollow structure for mounting an embroidery needle.

[0013] The aforementioned embroidery machine head drive mechanism, through the coordinated arrangement of the main shaft assembly, the active spiral bevel gear, the driven spiral bevel gear assembly, the needle bar drive crank, the needle bar drive rod, the upper and lower component assemblies, and the needle bar, expands the radius of the needle bar drive crank to a preset threshold. By effectively increasing the radius of the needle bar drive crank, the stroke of the needle bar can be increased. The needle bar drive rod converts the circular motion of the needle bar drive crank into the linear motion of the needle bar. One end of the needle bar drive rod can be detachably installed on the end of the needle bar drive crank away from the needle bar drive crank. By adjusting the installation position of the needle bar drive rod and the needle bar drive crank, the needle bar stroke and force transmission efficiency can be further optimized, improving the ability of the embroidery needle to penetrate thick materials and effectively preventing the situation where the embroidery needle cannot penetrate the thick material when embroidering thick materials. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembly structure of the embroidery machine head drive mechanism according to an embodiment of the present invention;

[0015] Figure 2 for Figure 1 A schematic diagram of the internal structure of the embroidery machine head drive mechanism according to an embodiment of this utility model;

[0016] Figure 3 for Figure 1 A schematic diagram of the upper and lower component assembly structure of the embroidery machine head drive mechanism according to an embodiment of the present invention. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediary component present. Conversely, when a component is said to be "directly" connected to another component, there is no intermediary component.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] like Figure 1 and Figure 2 As shown, an embroidery machine head drive mechanism includes a gearbox 1, a main shaft assembly 2, a driving spiral bevel gear 3, a driven spiral bevel gear assembly 4, a needle bar drive crank 5, a needle bar drive rod 6, an upper and lower component assembly 7, and a needle bar 8. The main shaft assembly 2 is mounted on the gearbox 1. The driving spiral bevel gear 3 is mounted on the main shaft assembly 2 and is driven to rotate by the main shaft assembly 2. The driving spiral bevel gear 3 is meshed with the driven spiral bevel gear assembly 4. The needle bar drive crank 5 is mounted on the driven spiral bevel gear assembly 4 and is driven to rotate along a preset direction and angle by the driven spiral bevel gear assembly 4. One end of the needle bar drive rod 6 is detachably mounted on the end of the needle bar drive crank 5 away from the needle bar drive crank 5, and the other end is detachably connected to the upper and lower component assembly 7. The needle bar 8 is mounted on the upper and lower component assembly 7, and the radius of the needle bar drive crank 5 is expanded to a preset threshold.

[0021] The top surface of the gearbox 1 has a receiving hole 11 for accommodating the driven spiral bevel gear assembly 4. This facilitates the driven spiral bevel gear assembly 4 in driving the needle bar and crank 5 to rotate during rotation. The gearbox 1 houses the driving spiral bevel gear 3 and the driven spiral bevel gear assembly 4, allowing for sealed lubrication and reducing noise. The driven spiral bevel gear assembly 4 includes a driven bearing ring 41 and a driven spiral bevel gear 42, with the driven bearing ring 41 fitted onto the driven spiral bevel gear 42. The needle bar 8 has a hollow structure for mounting the embroidery needle.

[0022] The stroke formula for needle bar 8 is: S=2r. From the stroke formula, we know that the rotation radius r of the needle bar drive crank 5 directly affects the travel stroke S of needle bar 8. Increasing the radius of the needle bar drive crank 5 directly doubles the travel stroke of needle bar 8. Therefore, by increasing the rotation radius r of the needle bar drive crank 5, the travel stroke of needle bar 8 can be increased, which in turn increases the travel stroke of the embroidery needle. One end of the needle bar drive rod can be detachably installed on the end of the needle bar drive crank away from it. By adjusting the installation position of the needle bar drive rod and the needle bar drive crank, the needle bar stroke and force transmission efficiency can be further optimized, improving the embroidery needle's ability to penetrate thick materials.

[0023] When the embroidery machine head drive mechanism starts working, the external motor drives the main shaft assembly 2 to rotate in the forward or reverse direction. The main shaft assembly 2 drives the active spiral bevel gear 3 to rotate clockwise or counterclockwise. The active spiral bevel gear 3 drives the driven spiral bevel gear assembly 4 to rotate clockwise or counterclockwise. The driven spiral bevel gear assembly 4 drives the needle bar drive crank 5 to rotate clockwise or counterclockwise. In turn, through the needle bar drive rod 6 and the upper and lower component assembly 7, the needle bar 8 is driven to move towards or away from the embroidery, thus driving the embroidery needle to complete the embroidery work.

[0024] In this way, the embroidery machine head drive mechanism, through the coordinated arrangement of the main shaft assembly 2, the active spiral bevel gear 3, the driven spiral bevel gear assembly 4, the needle bar drive crank 5, the needle bar drive rod 6, the upper and lower component assemblies 7, and the needle bar 8, expands the radius of the needle bar drive crank 5 to a preset threshold. By effectively increasing the radius of the needle bar drive crank 5, the stroke of the needle bar 8 can be increased. The needle bar drive rod 6 converts the circular motion of the needle bar drive crank 5 into the linear motion of the needle bar. One end of the needle bar drive rod 6 can be detachably installed on the end of the needle bar drive crank 5 away from the needle bar drive crank 5. By adjusting the installation position of the needle bar drive rod 6 and the needle bar drive crank 5, the needle bar stroke and force transmission efficiency can be further optimized, improving the ability of the embroidery needle to penetrate thick materials and effectively avoiding the situation where the embroidery needle cannot penetrate the thick material when embroidering thick materials.

[0025] In one embodiment, the spindle assembly 2 includes a spindle 21 and a fastening collar 22, the spindle 21 being mounted on the active spiral bevel gear 3, and the fastening collar 22 being fitted onto the outer layer of the active spiral bevel gear 3.

[0026] In this way, by fitting the fastening collar 22 onto the outer layer of the active spiral bevel gear 3, the active spiral bevel gear 3 can be fastened to the main shaft 21. When the main shaft 21 is driven to rotate by an external motor, the active spiral bevel gear 3 can be driven to rotate synchronously.

[0027] In one embodiment, the needle bar drive rod 6 has a groove 61, and the area of ​​the groove 61 gradually increases as it approaches the needle bar drive crank 5.

[0028] like Figure 3 As shown, in one embodiment, the upper and lower component assembly 7 includes an upper and lower component seat 71, upper and lower components 72, and a bushing 73. The bottom of the upper and lower component seat 71 is detachably connected to one end of the needle bar drive rod 6. The two ends of the bushing 73 are respectively inserted into the upper and lower component seat 71 and the upper and lower components 72, and the needle bar 8 is inserted into the bushing 73. One end of the upper and lower component seat 71 has a notch 711.

[0029] Thus, the upper and lower component seats 71 have a notch 711 at one end, giving them a certain degree of elasticity in the vertical direction. This allows for the installation of bushings 73 of different diameters, and consequently, needle bars 8 of different diameters, making the upper and lower component seats 71 more versatile. The upper and lower ends of the upper and lower component seats 71 have fixing holes, which can be used to fix the upper and lower component seats 71 by inserting external fasteners into the fixing holes.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mechanism for driving a head of an embroidery machine, characterized in that: The device includes a gearbox, a main shaft assembly, a driving spiral bevel gear, a driven spiral bevel gear assembly, a needle bar drive crank, a needle bar drive rod, upper and lower component assemblies, and a needle bar. The main shaft assembly is mounted on the gearbox. The driving spiral bevel gear is mounted on the main shaft assembly and is driven to rotate by the main shaft assembly. The driving spiral bevel gear meshes with the driven spiral bevel gear assembly. The needle bar drive crank is mounted on the driven spiral bevel gear assembly and is driven to rotate along a preset direction and angle by the driven spiral bevel gear assembly. One end of the needle bar drive rod is detachably mounted on the needle bar drive crank at the end away from the needle bar drive crank, and the other end is detachably connected to the upper and lower component assemblies. The needle bar passes through the upper and lower component assemblies, and the radius of the needle bar drive crank is expanded to a preset threshold.

2. A drive mechanism for a needle bed of an embroidery machine according to claim 1, wherein: The top surface of the gearbox has a receiving hole for accommodating the driven helical bevel gear assembly.

3. The embroidery machine head drive mechanism according to claim 1, characterized in that: The spindle assembly includes a spindle and a fastening collar. The spindle passes through the active spiral bevel gear, and the fastening collar is sleeved on the outer layer of the active spiral bevel gear.

4. The drive mechanism for embroidery machine head according to claim 1, wherein: The driven spiral bevel gear assembly includes a driven bearing ring and driven spiral bevel gears, with the driven bearing ring sleeved on the driven spiral bevel gears.

5. The drive mechanism for the head of a embroidery machine according to claim 1, characterized in that: The needle bar drive rod has a groove, and the area of ​​the groove gradually increases as it approaches the needle bar drive crank.

6. A drive mechanism for a needle bed of an embroidery machine according to claim 1, wherein: The upper and lower component assembly includes an upper and lower component seat, upper and lower components, and a bushing. The bottom of the upper and lower component seat is detachably connected to one end of the needle bar drive rod. The two ends of the bushing are respectively inserted into the upper and lower component seat and the upper and lower components. The needle bar is inserted into the bushing.

7. A drive mechanism for a needle bed of an embroidery machine according to claim 6, wherein: One end of the upper and lower component seats has a notch.

8. The drive mechanism for the head of a embroidery machine according to claim 1, characterized in that: The needle bar has a hollow structure and is used to hold embroidery needles.

Images