Self-lubricating nine-needle color changing cam structure for embroidery machine

Abstract

The utility model relates to a self-lubricating nine-needle color-changing cam structure for an embroidery machine, which belongs to the technical field of embroidery machines and comprises a nine-needle color-changing cam shaft, two ends of the nine-needle color-changing cam shaft are provided with bearing seats in snap spring type nested connection with the nine-needle color-changing cam shaft, and the bearing seats are connected with the nine-needle color-changing cam shaft. One end of the nine-needle color-changing cam shaft is provided with a driving shaft rod which extends out of the bearing seat and is integrated with the nine-needle color-changing cam shaft, an oil storage channel is arranged in the nine-needle color-changing cam shaft, and an oil injection threaded hole communicated with the oil storage channel is formed in the outer circle of one end or two ends of the nine-needle color-changing cam shaft. And a plurality of oil outlets communicated with the oil storage channel are arranged between the nine-needle color changing cam shaft and the bearing seat. The device is simple in structure, time-saving, labor-saving, good in operation stability and long in service life. The problem that lubricating oil is troublesome to smear on the color changing cam shaft at present is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery machines, in particular to a self-lubricating nine-needle color-changing cam structure for embroidery machines. Background Art

[0002] Embroidery machines, also known as embroidery machines, are widely used as industrial sewing equipment. In industrial sewing, especially embroidery, colorful patterns are often required to enhance the aesthetics of the product. This requires constantly changing thread colors during the process, a process known as color changing.

[0003] An embroidery machine primarily consists of two parts: the up-and-down movement of the machine head and the movement of the embroidery frame in the X and Y directions. The up-and-down movement of the machine head is driven by a spindle motor, which then rotates the drive shaft. This rotation is converted into reciprocating movement of the needle bar via a cam and connecting rod in the machine head, completing the sewing process. The X and Y movement of the embroidery frame is driven by a stepper motor, which moves the fabric in a planar motion, enabling continuous embroidery.

[0004] The color-changing cam and bearing seat require lubrication. Currently, embroidery machines rely on manual lubrication. Each maintenance step requires disassembly of the machine housing, which is time-consuming and labor-intensive, and the lubrication stability is poor. Summary of the Invention

[0005] This utility model primarily addresses the deficiencies in the prior art by providing a self-lubricating nine-needle color-changing cam structure for an embroidery machine. The structure is simple, time-saving and labor-saving, with excellent operational stability and a long service life. It also solves the current problem of the troublesome application of lubricating oil to the color-changing cam shaft.

[0006] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0007] A self-lubricating nine-needle color-changing cam structure for an embroidery machine includes a nine-needle color-changing cam shaft, bearing seats are provided at both ends of the nine-needle color-changing cam shaft and are nested and connected to the nine-needle color-changing cam shaft in a retaining spring manner, one end of the nine-needle color-changing cam shaft is provided with a driving shaft extending from the bearing seat and integrated with the nine-needle color-changing cam shaft, an oil storage passage is provided in the nine-needle color-changing cam shaft, an oil injection threaded hole connected to the oil storage passage is provided on the outer circle of one or both ends of the nine-needle color-changing cam shaft, and a plurality of oil outlet holes connected to the oil storage passage are provided between the nine-needle color-changing cam shaft and the bearing seat.

[0008] Preferably, a liquid control component movably engaged with the oil outlet hole is provided on the upper portion of the oil outlet hole.

[0009] Preferably, the fluid control assembly includes a steel ball, with a spring steel ring positioned between the steel ball and the inner wall of the oil outlet counterbore. When the lubricating oil between the nine-pin color-changing camshaft and the bearing seat is insufficient, the lubricating oil in the oil reservoir, through gravity, pushes the steel ball against the spring steel ring, creating an oil-passing gap.

[0010] Preferably, a spiral cam groove extending in a spiral shape is provided on the outer circle of the nine-needle color-changing cam shaft, and needle stop grooves distributed at staggered intervals are provided on the inner walls on both sides of the spiral cam groove.

[0011] Preferably, the number of turns of the spiral cam groove is 3.5 turns.

[0012] The color-changing cam shaft facilitates color changes during the embroidery process. Embroidery machines are typically equipped with multiple color-changing cams, each controlling a different color. When a color change is required, the corresponding color-changing cam actuates the color-changing mechanism, enabling rapid color switching. A nine-needle color-changing cam shaft can embroider nine different colors simultaneously. Driven by the nine-needle color-changing cam shaft, the roller pin in the color-changing mechanism moves along the spiral cam groove. Needle changes are achieved through the contact and separation of the roller pin and the needle position plate.

[0013] Preferably, the oil injection threaded hole is provided with an oil injection nozzle which is threadedly sleeved and fixed to the oil injection threaded hole.

[0014] The utility model can achieve the following effects:

[0015] The utility model provides a self-lubricating nine-needle color-changing cam structure for an embroidery machine. Compared with the prior art, the structure is simple, time-saving and labor-saving, the operation is stable and the service life is long. The problem of applying lubricating oil to the color-changing cam shaft is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a structural schematic diagram of the nine-pin color-changing camshaft in the utility model.

[0018] Figure 3 It is a structural sectional view of the nine-pin color-changing camshaft in the utility model.

[0019] Figure 4 It is a structural diagram of the liquid control component in the utility model.

[0020] In the figure: bearing seat 1, oiling nozzle 2, nine-needle color-changing camshaft 3, driving shaft 4, oil outlet hole 5, oiling threaded hole 6, spiral cam groove 7, needle stop groove 8, liquid control component 9, oil storage channel 10, spring steel ring 11, steel ball 12. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be further specifically described below with reference to the embodiments and the accompanying drawings.

[0022] Example: Figure 1-4 As shown, a self-lubricating nine-needle color-changing cam structure for an embroidery machine includes a nine-needle color-changing cam shaft 3. A spiral cam groove 7 extending in a spiral shape is formed on the outer circumference of the nine-needle color-changing cam shaft 3, with the spiral cam groove 7 having 3.5 turns. Needle-stop grooves 8 are provided on the inner walls of both sides of the spiral cam groove 7 at staggered intervals. Bearing seats 1 are provided at both ends of the nine-needle color-changing cam shaft 3, which are connected to the nine-needle color-changing cam shaft 3 in a retaining spring-type nested manner. A drive shaft 4 is provided at one end of the nine-needle color-changing cam shaft 3, extending from the bearing seat 1 and integral with the nine-needle color-changing cam shaft 3. An oil storage channel 10 is provided within the nine-needle color-changing cam shaft 3. A threaded oil injection hole 6 is provided on the outer circumference of one or both ends of the nine-needle color-changing cam shaft 3, which is connected to the oil storage channel 10. An oil injection nozzle 2 is provided in the oil injection hole 6, which is threadedly connected to the oil injection hole 6. Two symmetrically spaced oil outlets 5 are located between the nine-pin color-changing camshaft 3 and the bearing housing 1, each connected to an oil reservoir 10. A fluid control assembly 9 is positioned above each of these outlets, movably engaging with them. This assembly includes a steel ball 12, with a spring steel ring 11 positioned between the ball 12 and the inner wall of the countersunk hole in the oil outlet 5.

[0023] In summary, the self-lubricating nine-needle color-changing cam structure for an embroidery machine has a simple structure, saves time and effort, has good operational stability, and has a long service life, thus solving the current problem of the troublesome application of lubricating oil to the color-changing cam shaft.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0025] In summary, the above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A self-lubricating nine-needle color-changing cam structure for an embroidery machine, characterized by: The invention comprises a nine-pin color-changing cam shaft (3), wherein both ends of the nine-pin color-changing cam shaft (3) are provided with bearing seats (1) which are connected to the nine-pin color-changing cam shaft (3) in a spring-type nested manner, and one end of the nine-pin color-changing cam shaft (3) is provided with a driving shaft (4) which extends out of the bearing seat (1) and is integrated with the nine-pin color-changing cam shaft (3), an oil storage passage (10) is provided in the nine-pin color-changing cam shaft (3), an oil injection threaded hole (6) which is connected to the oil storage passage (10) is provided on the outer circle of one end or both ends of the nine-pin color-changing cam shaft (3), and a plurality of oil outlet holes (5) which are connected to the oil storage passage (10) are provided between the nine-pin color-changing cam shaft (3) and the bearing seat (1).

2. The self-lubricating nine-needle color-changing cam structure for an embroidery machine according to claim 1, characterized in that: The upper portion of the oil outlet hole (5) is provided with a liquid control component (9) that is movably engaged with the oil outlet hole (5).

3. The self-lubricating nine-needle color-changing cam structure for an embroidery machine according to claim 2, characterized in that: The liquid control component (9) includes a steel ball (12), and a spring steel ring (11) is provided between the steel ball (12) and the inner wall of the countersunk hole of the oil outlet hole (5).

4. The self-lubricating nine-needle color-changing cam structure for an embroidery machine according to claim 1, characterized in that: A spiral cam groove (7) extending in a spiral shape is provided on the outer circle of the nine-needle color-changing cam shaft (3), and needle stop grooves (8) distributed at staggered intervals are provided on the inner walls on both sides of the spiral cam groove (7).

5. The self-lubricating nine-needle color-changing cam structure for an embroidery machine according to claim 4, characterized in that: The number of turns of the spiral cam groove (7) is 3.5 turns.

6. The self-lubricating nine-needle color-changing cam structure for an embroidery machine according to claim 1, characterized in that: The oil injection threaded hole (6) is provided with an oil injection nozzle (2) which is threadedly sleeved and fixed to the oil injection threaded hole (6).

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