Six-needle color changing cam device of computerized embroidery machine
By designing the six-needle color change cam device of the computer embroidery machine, the problem of speed difference and inability to change colors independently after increasing the number of heads of the embroidery machine is solved, and the need for quick switching of six-needle color and complex patterns is realized, and the embroidery efficiency and flexibility are improved.
Patent Information
- Application Number
- CN202422631789.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-10-30
AI Technical Summary
After the existing embroidery machines increase the number of heads, there are speed differences and torque inconsistent at both ends of the spindle, and the color change of the independent needle rod frame is not possible, which limits the embroidery efficiency and flexibility.
A six-pin color change cam device for computer embroidery machines is designed, and the six-pin color change cam shaft, spiral cam groove and driven helical gear are used to achieve quick switching of six-pin color and independent color change through components such as the transmission shaft, six-pin color change cam shaft, spiral cam groove and driven helical gear.
It realizes the rapid switching of six-needle color of the embroidery machine, improves the efficiency and flexibility of embroidery, can meet the embroidery needs of complex patterns, and the device has a compact structure, good operating stability and long service life.
Smart Images
Figure CN223017178U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of embroidery machines, in particular to a six-needle color-changing cam device for a computerized embroidery machine. Background Technique
[0002] At present, the development trend of embroidery machines is increasingly towards super multi-head machines. With the continuous increase in the number of machine heads on the beam, its technical drawbacks are also constantly emerging. There are mainly technical problems such as speed differences at both ends of the main shaft due to the extremely long main shaft under the drive of the same main shaft, inconsistent torques, and inability to independently change colors for unified patterns.
[0003] An embroidery machine mainly 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 main shaft motor to drive a transmission shaft to rotate, and the rotation is converted into the up-and-down reciprocating movement of the needle bar through the cam and connecting rod of the machine head to complete sewing. The movement of the embroidery frame in the X and Y directions is driven by a stepping motor to drive the fabric to perform a planar movement, enabling continuous embroidery.
[0004] At present, most of the existing improved structures adopt a spliced machine structure to extend the embroidery machine frame by splicing the frame. However, the color-changing function of the needle bar frame of this spliced machine is still to change colors uniformly for the entire machine and cannot achieve independent color change. The reason is that the main driving object of the existing color-changing structure is the color-changing pull rod, and the color change of the entire embroidery machine is realized by relying on the color-changing pull rod to connect the needle bar frame, and it is impossible to perform independent color change for a certain or several needle bar frames. Summary of the Invention
[0005] The utility model mainly solves the deficiencies existing in the prior art, and provides a six-needle color-changing cam device for a computerized embroidery machine, which has the characteristics of compact structure, good running stability and long service life. It realizes the rapid switching of the colors of six needles of the embroidery machine. It improves the embroidery efficiency and flexibility and can meet the embroidery requirements of complex patterns.
[0006] The above technical problems of the utility model are mainly solved by the following technical solutions:
[0007] A six-needle color-changing cam device for a computerized embroidery machine includes a transmission shaft. Bearing seats fixedly connected to the transmission shaft in an inserted and embedded manner are provided at both ends of the transmission shaft. A six-needle color-changing cam shaft fixedly connected to the transmission shaft in an inserted and embedded manner is provided on the transmission shaft. A connection hole inserted into the transmission shaft is provided in the six-needle color-changing cam shaft. A steel belt is provided between the middle of the connection hole and the transmission shaft. A shaft sleeve nested with the transmission shaft is provided between one end of the six-needle color-changing cam shaft and the bearing seat. A driven bevel gear fixedly connected to the transmission shaft in an inserted and embedded manner is provided at the other end of the six-needle color-changing cam shaft.
[0008] Preferably, a motor is provided outside the driven helical gear, and a driving helical gear that is in tooth-shaped meshing transmission with the driven helical gear is provided between the motor and the driven helical gear.
[0009] Preferably, a pair of semi-circular snap rings that are in snap-in socket connection with the transmission shaft in a slot manner are provided between the driving helical gear and the bearing seat, and the semi-circular snap rings play a role in limiting the bearing seat.
[0010] Preferably, a spiral cam groove that extends spirally is provided on the six-needle color-changing camshaft. The number of turns of the spiral cam groove is 2.75 turns, and stop needle grooves that are arranged at staggered intervals are provided on both inner walls of the spiral cam groove.
[0011] The function of the color-changing camshaft is to realize color change during the embroidery process. An embroidery machine is usually equipped with multiple color-changing cams, and each cam controls a different color. When color change is required, the corresponding color-changing cam will drive the color-changing device, thereby realizing rapid color switching. The six-needle color-changing camshaft embroiders six different colors at the same time. The roller pins in the color-changing device move along the spiral cam groove under the drive of the six-needle color-changing camshaft, and the needle-changing process is realized through the contact and separation between the roller pins and the needle position plate.
[0012] Preferably, screw holes Ⅰ that are fixed by screwing with the transmission shaft are provided on the outer circles of the front and rear parts of the six-needle color-changing camshaft and on the driven helical gear.
[0013] Preferably, the bearing seat includes a bearing sleeve. A flange outer ring that is sleeved with the bearing sleeve is provided on the bearing sleeve. A pair of inner rings that are mirror-image distributed and nested with the bearing sleeve are provided between the flange outer ring and the bearing sleeve. Retaining frames are provided between the inner rings and the flange outer ring, and a number of steel columns that are annularly distributed and are in movable snap-in connection with the retaining frames are provided in the retaining frames.
[0014] Preferably, a spline hole that is in plug-in limit connection with the transmission shaft is provided in the bearing sleeve, and a number of screw holes Ⅱ that penetrate the spline hole and are fixed by screwing with the transmission shaft are provided at the rear end of the bearing sleeve.
[0015] Preferably, multi-lip skeleton oil seals are provided between both sides of the flange outer ring and the inner ring.
[0016] Preferably, the upper end face of the inner ring and the inner wall of the flange outer ring are both conical structures.
[0017] The utility model can achieve the following effects:
[0018] The utility model provides a six-needle color-changing cam device for a computer embroidery machine. Compared with the prior art, it has the characteristics of compact structure, good running stability and long service life. It realizes the rapid switching of the colors of the six needles of the embroidery machine, improves the embroidery efficiency and flexibility, and can meet the embroidery requirements of complex patterns. Brief Description of the Drawings
[0019] Figure 1 It is a schematic structural diagram of the utility model.
[0020] Figure 2 It is a schematic structural diagram of the six-needle color-changing camshaft in the utility model.
[0021] Figure 3 It is a sectional view of the structure of the six-needle color-changing camshaft in the utility model.
[0022] Figure 4 It is a schematic structural diagram of the bearing seat in the utility model.
[0023] In the figure: bearing seat 1, bushing 2, six-needle color-changing camshaft 3, driven helical gear 4, motor 5, driving helical gear 6, transmission shaft 7, semi-circular snap ring 8, spiral cam groove 9, needle stop groove 10, screw hole Ⅰ 11, connection hole 12, steel strip 13, flange outer ring 14, cage 15, steel column 16, inner ring 17, screw hole Ⅱ 18, spline hole 19, bearing sleeve 20, multi-lip skeleton oil seal 21. Detailed Embodiment
[0024] The technical solution of the utility model will be further specifically described below through embodiments in conjunction with the drawings.
[0025] Embodiment: As Figures 1-4As shown in the figure, a six-needle color-changing cam device for a computer embroidery machine includes a drive shaft 7. Bearing seats 1 are provided at both ends of the drive shaft 7 and are fixedly connected to the drive shaft 7 in an inserted and embedded manner. A six-needle color-changing camshaft 3 is provided on the drive shaft 7 and is fixedly connected to the drive shaft 7 in an inserted and connected manner. A connection hole 12 for inserting the drive shaft 7 is provided inside the six-needle color-changing camshaft 3. A steel belt 13 is provided between the middle of the connection hole 12 and the drive shaft 7. A spiral cam groove 9 extending in a spiral shape is provided on the six-needle color-changing camshaft 3. The number of turns of the spiral cam groove 9 is 2.75 turns. Stop needle grooves 10 are provided on both inner walls of the spiral cam groove 9 at staggered intervals. Screw holes Ⅰ11 for pressing and fixing to the drive shaft 7 with screws are provided on the outer circles of the front and rear parts of the six-needle color-changing camshaft 3 and on the driven bevel gear 4. A bushing 2 nested with the drive shaft 7 is provided between one end of the six-needle color-changing camshaft 3 and the bearing seat 1. A driven bevel gear 4 fixedly connected to the drive shaft 7 in an inserted and connected manner is provided at the other end of the six-needle color-changing camshaft 3. A motor 5 is provided outside the driven bevel gear 4. A driving bevel gear 6 that is in tooth-shaped meshing transmission with the driven bevel gear 4 is provided between the motor 5 and the driven bevel gear 4. A pair of semi-circular snap rings 8 that are inserted and sleeved with the drive shaft 7 in a card slot manner are provided between the driving bevel gear 6 and the bearing seat 1. The semi-circular snap rings 8 play a role in limiting the bearing seat 1.
[0026] The bearing seat 1 includes a bearing sleeve 20. A spline hole 19 for inserting and limiting the drive shaft 7 is provided inside the bearing sleeve 20. Two screw holes Ⅱ18 that penetrate the spline hole 19 and are fixedly connected to the drive shaft 7 with screws are provided at the rear end of the bearing sleeve 20. A flange outer ring 14 sleeved with the bearing sleeve 20 is provided on the bearing sleeve 20. A pair of inner rings 17 that are mirror-image distributed and nested with the bearing sleeve 20 are provided between the flange outer ring 14 and the bearing sleeve 20. The upper end surfaces of the inner rings 17 and the inner walls of the flange outer ring 14 are both conical structures. Cage 15 is provided between the inner ring 17 and the flange outer ring 14. Twelve steel columns 16 that are annularly distributed and are movably clamped with the cage 15 are provided inside the cage 15. Multi-lip skeleton oil seals 21 are provided between both sides of the flange outer ring 14 and the inner ring 17.
[0027] In summary, the six-needle color-changing cam device of the computer embroidery machine has the characteristics of compact structure, good running stability and long service life. It realizes the rapid switching of the colors of the six needles of the embroidery machine. It improves the embroidery efficiency and flexibility and can meet the embroidery requirements of complex patterns.
[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.
[0029] In summary, the above are only specific embodiments of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.
Claims
1. A six-needle color-changing cam device for a computer embroidery machine, characterized in that: The invention comprises a transmission shaft (7), both ends of the transmission shaft (7) are provided with bearing seats (1) which are plug-in fixedly connected to the transmission shaft (7), the transmission shaft (7) is provided with a six-pin color-changing cam shaft (3) which is plug-in fixedly connected to the transmission shaft (7), the six-pin color-changing cam shaft (3) is provided with a connecting hole (12) which is plug-in connected to the transmission shaft (7), a steel belt (13) is provided between the middle of the connecting hole (12) and the transmission shaft (7), a shaft sleeve (2) which is embedded in the transmission shaft (7) is provided between one end of the six-pin color-changing cam shaft (3) and the bearing seat (1), and a driven bevel gear (4) which is plug-in fixedly connected to the transmission shaft (7) is provided at the other end of the six-pin color-changing cam shaft (3).
2. The six-needle color-changing cam device of a computer embroidery machine according to claim 1, characterized in that: A motor (5) is arranged outside the driven helical gear (4), and a driving helical gear (6) is arranged between the motor (5) and the driven helical gear (4) and is meshed with the driven helical gear (4) for transmission.
3. The six-needle color-changing cam device of a computer embroidery machine according to claim 2, characterized in that: A pair of semicircular snap rings (8) are provided between the driving bevel gear (6) and the bearing seat (1) and are slot-engaged with the transmission shaft (7). The semicircular snap rings (8) have a limiting effect on the bearing seat (1).
4. The six-needle color-changing cam device of a computer embroidery machine according to claim 1, characterized in that: The six-needle color-changing cam shaft (3) is provided with a spiral cam groove (9) extending in a spiral shape, the number of turns of the spiral cam groove (9) is 2.75 turns, and the inner walls on both sides of the spiral cam groove (9) are provided with needle stop grooves (10) distributed at staggered intervals.
5. The six-needle color-changing cam device of a computer embroidery machine according to claim 4, characterized in that: The front and rear outer circles of the six-pin color-changing camshaft (3) and the driven bevel gear (4) are both provided with screw holes I (11) for crimping and fixing with the transmission shaft (7) by screws.
6. The six-needle color-changing cam device of a computer embroidery machine according to claim 1, characterized in that: The bearing seat (1) comprises a bearing sleeve (20), the bearing sleeve (20) is provided with a flange outer ring (14) which is sleeved with the bearing sleeve (20), a pair of inner rings (17) which are mirror-distributed and nested with the bearing sleeve (20) are provided between the flange outer ring (14) and the bearing sleeve (20), a retaining frame (15) is provided between the inner ring (17) and the flange outer ring (14), and a plurality of steel columns (16) which are distributed in an annular shape and movably embedded with the retaining frame (15) are provided inside the retaining frame (15).
7. The six-needle color-changing cam device of a computer embroidery machine according to claim 6, characterized in that: The bearing sleeve (20) is provided with a spline hole (19) for inserting and limiting the transmission shaft (7), and the rear end of the bearing sleeve (20) is provided with a plurality of screw holes II (18) penetrating the spline hole (19) and fixing the bearing sleeve (20) with the transmission shaft (7) by screw crimping.
8. The six-needle color-changing cam device of a computer embroidery machine according to claim 6, characterized in that: Multi-lip skeleton sealing rings (21) are provided between the two sides of the flange outer ring (14) and the inner ring (17).
9. The six-needle color-changing cam device of a computer embroidery machine according to claim 6, characterized in that: The upper end surface of the inner ring (17) and the inner wall of the flange outer ring (14) are both conical structures.