A combined super multi-color embroidery machine

Abstract

The present invention discloses a combined super-multi-color embroidery machine, comprising a frame, a head component and a thread frame component, the head component comprising a head assembly fixed to the frame, a plurality of needle bar frames arranged side by side and movable laterally, a thread clamp and a color changing mechanism, the color changing mechanism comprising a first driving motor, a transmission mechanism connecting the needle bar frame and the first driving motor, the transmission mechanism comprising a transmission structure and a matching structure, the transmission structure rotates under the drive of the first driving motor, the matching structure slidingly matches with the transmission structure so that the matching structure moves left or right as the transmission structure rotates, the present invention has the beneficial effect of making color changing more stable, thereby reducing thread breakage rate and equipment failure rate.

Description

Technical Field

[0001] The invention relates to the field of computer embroidery machines, in particular to a combined super-multi-color embroidery machine. Background Art

[0002] Computer embroidery machines can embroider a variety of colors of embroidery threads onto fabrics to form a variety of different color patterns. Most embroidery machines on the market now have 12 colors, and at most 24 colors. The embroidery machine industry is currently developing in the direction of multi-color. The embroidery industry that requires large-scale multi-color embroidery has higher color requirements. By increasing the number of needles, more colors can be automatically changed. However, the increase in the number of needles will inevitably cause the entire needle bar frame to become wider, which will greatly reduce the strength of the needle bar frame.

[0003] Existing Chinese patent application number CN201921100346.3 discloses a super multi-color embroidery machine head embroidery machine, wherein the super multi-color embroidery machine head includes a head shell and a needle bar frame that can slide laterally along the head shell, the needle bar frame includes a left needle bar frame and a right needle bar frame fixedly connected as one, the left needle bar frame and the right needle bar frame are fixed to a guide rail slider, and the head shell is provided with a guide bar that slides with the guide rail slider. The needle bar frame is split into a left needle bar frame and a right needle bar frame in the application, which solves the strength problem of the needle bar frame, but there are still defects. The color change of a single guide rail is not stable enough, which will increase the breakage rate and equipment failure rate. The color change is carried out by a screw nut assembly, which has a high manufacturing cost, and the thread frame does not move during the color change of the head. When the needle bar frame is constantly switching and changing the thread, the needle bar frame is switched to a position farther away from the force line frame, the embroidery thread between the needle bar frame and the thread frame will be pulled longer, which will easily cause the embroidery thread to be entangled and knotted.

[0004] For another example, Chinese patent application No. CN201921099219.6 discloses an ultra-multi-color embroidery machine, including an embroidery machine head and a surface thread conveying device, the embroidery machine head includes a head shell and a needle bar frame, the surface thread conveying device includes a thread rack assembly and a thread clamp assembly, the needle bar frame is driven by a needle frame color changing drive assembly to slide laterally along the head shell, the thread rack assembly and the thread clamp assembly are slidably mounted on the frame crossbeam through linear guide rails, the embroidery machine color changing surface thread synchronization structure also includes a thread rack and a thread clamp color changing synchronization drive assembly that drives the thread rack assembly and the thread clamp assembly to slide synchronously with the needle bar frame laterally; the needle bar frame includes a fixed connection as The left needle bar frame and the right needle bar frame are integrated and fixed with a guide rail slider. The above application realizes the synchronous movement of the thread rack and the thread clamp, so that the relative position of the surface thread remains unchanged during the color changing process, ensuring that the surface thread will not be entangled and knotted. However, there are the following defects. The synchronous driving mechanism of the thread rack and the thread clamp is driven by a screw nut. On the one hand, the manufacturing precision of the screw nut is high, the manufacturing cost is high, and it will increase the space of the equipment. On the other hand, when there are more combined needle bar frames, the manufacturing length of the screw will be longer, and the screw will be easily bent during operation, resulting in unstable color changing, thereby increasing the thread breakage rate and equipment failure rate. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a combined super-multi-color embroidery machine, which can effectively improve the stability of color changing and reduce the thread breakage rate and equipment failure rate.

[0006] The present invention is achieved through the following technical solutions:

[0007] A combined super-multi-color embroidery machine comprises a frame, a head component and a thread rack component arranged on the frame, the thread rack component is arranged above the head component and can move laterally relative to the frame, the head component comprises a head assembly fixed to the frame, a plurality of needle bar racks arranged side by side and movable laterally, a thread clamp arranged on the needle bar rack, and a color changing mechanism that drives the needle bar rack to move laterally to change colors, the color changing mechanism comprises a driving motor fixed to the head assembly, a transmission mechanism connecting the needle bar rack and the driving motor, the transmission mechanism comprises a transmission structure connected to the driving motor, and a matching structure fixed to the needle bar rack, the transmission structure rotates around its own axis direction under the drive of the driving motor, and the matching structure slidably matches with the transmission structure so that the matching structure moves left or right as the transmission structure rotates.

[0008] The working principle of the present invention is that a multi-color solution is realized by arranging a plurality of needle bar racks in combination, which can effectively solve the influence of the increase in the number of needles on the strength of the needle bar rack. The color-changing mechanism is arranged to cooperate with the transmission structure and the matching structure. The transmission structure can rotate around its own axis under the drive of the driving motor. The matching structure can be continuously driven by the transmission structure to move left or right during the rotation of the transmission structure, thereby driving the needle bar rack fixed thereon to move horizontally left and right, thereby realizing the color-changing function. In the prior art, the color-changing mechanism adopts a screw nut transmission method to change colors, but with a screw drive, when there are more colors, the combined needle bar rack is longer, and the color-changing stroke is relatively longer. The stroke that the screw rod needs to transmit is also longer. The longer the screw rod is, the weaker its strength is. It is easy for the screw rod to be bent by the needle bar frame during operation, resulting in unstable color changing, which increases the thread breakage rate and equipment failure rate. In addition, the precision requirements of the screw rod are relatively high, and the manufacturing cost is also higher. The transmission structure of the present invention only needs to be set at the position of the head assembly. Through continuous rotation and sliding cooperation with the matching structure, the transmission structure drives the left and right directions of the matching structure during rotation, which can effectively solve the strength problem of the color changing mechanism, making the color changing more stable, thereby reducing the thread breakage rate and equipment failure rate, and can effectively reduce the space occupied by the color changing mechanism and reduce the manufacturing cost of the equipment.

[0009] As a further improvement of the present invention, the transmission mechanism is provided with a transmission shaft, the transmission shaft is movably arranged on the head assembly and is connected to the drive motor through a conveyor belt, the transmission structure is sleeved on the transmission shaft and can rotate along the axial direction of the transmission shaft.

[0010] As a further improvement of the present invention, the matching structure is configured as a plurality of cylindrical protrusion structures which are arranged at intervals along the length direction of the needle bar frame, and one of the side surfaces of the transmission structure has a first pushing portion extending inward along its length direction, the first pushing portion is located on the left side of the matching structure and its inner side surface abuts against the matching structure, and the inner side surface of the first pushing portion is inclined so that when the transmission structure rotates, the first pushing portion abuts against the matching structure and moves to the right until the first pushing portion abuts against the left side of the adjacent matching structure.

[0011] As a further improvement of the present invention, another side surface of the transmission structure extends inward along its length direction with a second pushing portion, the second pushing portion is located on the right side of the matching structure and its inner side surface abuts against the matching structure, the inner side surface of the second pushing portion is inclined and in the same direction as the inner side surface of the first pushing portion so that when the transmission structure rotates, the second pushing portion abuts against the matching structure and moves to the left until the second pushing portion abuts against the right side of the adjacent matching structure.

[0012] As a further improvement of the present invention, the transmission structure is configured as a cam-shaped structure sleeved on the transmission shaft, the transmission structure is recessed inward along its circumference to form a groove, the first limiting structure and the second limiting structure protrude outward along the groove, and the matching structure is located in the groove.

[0013] As a further improvement of the present invention, the outer sleeve of the matching structure is provided with a rotating structure that can rotate around the axis direction of the matching structure, and the rotating structure is slidably matched with the transmission structure.

[0014] As a further improvement of the present invention, a head housing is provided on both sides of the head assembly, and color-changing guide rails extending along its length direction are respectively provided at the upper and lower ends of the head housing, and the needle bar frame is slidably arranged on the color-changing guide rails.

[0015] As a further improvement of the present invention, the thread rack component includes a base plate fixedly connected to the frame, a thread rack for placing embroidery thread, and a driving mechanism for driving the thread rack to move horizontally. The thread rack is slidably arranged on the base plate, and the driving mechanism includes a mounting seat fixed to the base plate, and a first transmission wheel and a second transmission wheel are respectively arranged at both ends of the mounting seat. The first transmission wheel and the second transmission wheel are driven by a conveyor belt, and the first transmission wheel is connected to a driving motor. A connecting piece is fixed on the conveyor belt, and the connecting piece is fixedly connected to the thread rack.

[0016] As a further improvement of the present invention, at least one linear guide rail is arranged on the bottom plate, a slider is slidably arranged on the linear guide rail, and the wire rack is fixed on the slider.

[0017] Beneficial effects of the present invention:

[0018] (1) A modular needle bar frame structure is used to achieve a multi-color solution, effectively solving the problem of increasing the strength of the needle bar frame due to the number of needles.

[0019] (2) The transmission structure of the rotating disc structure is slidably matched with the columnar matching structure arranged at intervals on the needle bar frame. The transmission structure is recessed inward along the circumferential direction to form two pushing parts, which abut against the left and right sides of the matching structure, so that the matching structure slides in the groove, and the side surfaces of the pushing parts are inclined, so that the transmission structure can rotate one circle and just drive the matching structure to move horizontally to the next adjacent matching structure to enter the groove. In this way, the needle bar frame can be repeatedly rotated to the left and right to change color, which effectively improves the color changing stability of the color changing mechanism, reduces the volume occupied by the color changing mechanism, and reduces the manufacturing cost.

[0020] (3) The combination of the guide rail and the slider allows the thread rack to run synchronously with the thread clamp and the needle bar rack, preventing the embroidery thread from being pulled out too long and causing entanglement and knotting when the needle bar rack runs to a far distance.

[0021] (4) The machine head assembly is equipped with double color-changing guide rails that slide with the needle bar frame to achieve lateral movement of the needle bar frame for color change. Compared with the single guide rail guided needle bar frame, the operation is more stable, thereby effectively reducing the thread breakage rate during color change. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0023] Figure 1 It is a schematic diagram of the specific structure of the present invention;

[0024] Figure 2 for Figure 1 A partial enlarged schematic diagram of

[0025] Figure 3 It is a schematic diagram of the specific structure of the head component in the present invention;

[0026] Figure 4 for Figure 3 A partial enlarged schematic diagram of

[0027] Figure 5 It is a schematic diagram of the specific structure of the wire rack component in the present invention;

[0028] Figure 6 for Figure 5 Schematic diagram of the specific structure of the driving mechanism. DETAILED DESCRIPTION

[0029] First, it should be noted that the present invention defines the left and right directions based on the running direction of the needle bar frame.

[0030] See also Figure 1 The present invention discloses a combined multi-color embroidery machine, comprising a frame 1, a head component 2, and a thread frame component 3. The head component 2 and the thread frame component 3 are respectively arranged on the frame 1, and the thread frame component 3 is arranged above the head component 2 and can move horizontally relative to the frame 1. Figure 2 , Figure 3The head component 2 includes a head assembly 21, a plurality of needle bar frames 22 arranged side by side, a thread clamp 23 arranged on the needle bar frames 22, and a color changing mechanism 24. A head shell 211 is arranged on both sides of the head assembly 21. The upper and lower ends of the head shell 211 are respectively provided with color changing guide rails 212 extending along its length direction. The upper and lower ends of the needle bar frame 22 are slidably arranged on the color changing guide rails 212. Preferably, in this embodiment, color changing guide rails 212 are arranged at the upper and lower ends of the needle bar frame 22, and double guide rails are used to guide the needle bar frame 22. The needle bar frame 22 is relatively large in size and heavy in weight. Using a single guide rail for guidance will cause shaking, and the color changing of the needle bar frame 22 is relatively not so stable. The embroidery thread is easily broken during the color changing process. Therefore, using color changing guide rails 212 for guidance at the upper and lower ends of the needle bar frame 22 can effectively improve the operation stability of the needle bar frame 22, thereby reducing the thread breakage rate. Figure 4The color-changing mechanism 24 includes a first drive motor 241 and a transmission mechanism 242. The first drive motor 241 is arranged on the head assembly 21. The transmission mechanism 242 connects the first drive motor 241 and the needle bar frame 22, so that the needle bar frame 22 can move laterally under the drive of the first drive motor 241 to achieve color change. The transmission mechanism 242 includes a transmission structure 2421 connected to the first drive motor 241 and a matching structure 221 fixedly connected to the needle bar frame 22. The transmission mechanism 242 is provided with a transmission shaft 2422, which is arranged on the head assembly 21 and is connected to the first drive motor 241 through a first conveyor belt 2423. The structure 2421 is sleeved on the transmission shaft 2422, and can rotate around its axial direction with the transmission shaft 2422 under the drive of the first drive motor 241. The transmission structure 2421 is arranged as a cam-shaped structure, and is recessed inward along its circumferential surface to form a groove 24213 with a spiral structure. The left and right sides of the groove 24213 protrude outward to form a first pushing part 24211 and a second pushing part 24212. The matching structure 221 is arranged as a plurality of cylindrical protrusion structures arranged at intervals along the length direction of the needle bar frame 22. The first pushing part 24211 is located on the left side of the matching structure 221, and its inner side surface is against the matching structure 221. The second pushing part 24212 is located on the matching structure The first push portion 24211 and the second push portion 24212 are arranged on the same side surface to be inclined in the same direction, so that the matching structure 221 can slide in the groove 24213 under the push of the first push portion 24211 under the drive of the first driving motor 241. Since the first push portion 24211 is arranged obliquely, the matching structure 221 can move to the right during the sliding process, and the transmission structure 2421 moves to the next adjacent matching structure 221 and is stuck in the groove 24213 after each rotation of the transmission structure 2421. That is, the needle bar frame 22 just moves one circle. The distance of the needle, when the transmission structure 2421 rotates in the opposite direction, the matching structure 221 slides in the groove 24213 under the push of the second pushing structure, and the second pushing structure is also inclined. The matching structure moves to the left during the sliding process. Similarly, each time the needle rotates one circle, the next matching structure 221 is inserted into the groove 24213, that is, the needle bar frame 22 just moves to the left by the distance of one needle, and the number of needles moved to the left or right by the needle bar frame 22 is controlled by repeated rotation, thereby realizing the color changing function. The color changing function is realized by using the cam to rotate and push the matching structure 221 to move. Compared with the transmission method of the screw nut, it solves the strength problem caused by the lengthening of the screw, and can effectively improve the stability of color changing.Thereby, the thread breakage rate and the failure rate of the equipment are reduced, and the transmission structure 2421 does not need to be synchronously increased according to the lengthening of the needle bar frame 22, the occupied space of the entire color changing mechanism 24 is reduced, and the manufacturing cost can also be reduced.

[0031] See also Figure 4 Since the matching structure 221 is against the transmission structure 2421 and continuously slides in the groove 24213, there is a large friction between the matching structure 221 and the transmission structure 2421. Therefore, the outer cover of the matching structure 221 is provided with a rotating structure 2211 that can rotate around the axis direction of the matching structure 221, so that the sliding friction between the matching structure 221 and the transmission structure 2421 is converted into rolling friction, thereby reducing the friction between the two, avoiding the continuous operation of the equipment causing wear between the two, thereby causing color change failure.

[0032] See also Figure 5 The thread rack component 3 includes a bottom plate 31, a thread rack 32 and a driving mechanism 33 of the thread rack 32. The thread rack 32 is used to place embroidery thread. The bottom plate 31 is used to be fixedly connected to the frame 1. The bottom plate 31 is provided with linear guide rails 311 at the upper and lower ends of the thread rack. A slider 312 is provided on the linear guide rail 311. The upper and lower ends of the thread rack are fixed on the slider 312, so that the thread rack 32 can slide horizontally on the bottom plate 31. The driving mechanism 33 includes a mounting seat 331, and the mounting seat 331 is fixed on the bottom plate 31. The two ends of the mounting seat 331 are respectively provided with a first transmission wheel 332 and a second transmission wheel 333. The first transmission wheel 332 and the second transmission wheel 333 are driven by a second conveyor belt 334. The first transmission wheel 332 is connected to a second drive motor 336. In the present embodiment, a third conveyor belt is further provided between the second drive motor 336 and the first transmission wheel 332 for increasing the torque. A connecting piece 335 is fixed to the second conveyor belt 334. The thread rack 32 is fixed to the connecting piece 335, so that when the drive motor drives the conveyor belt to run, the thread rack 32 is driven by the connecting piece 335 to move horizontally on the bottom plate 31 to change the color of the thread rack. The synchronous movement of the thread rack 32 and the needle bar rack 22 can prevent the embroidery thread from being pulled out very long when the needle bar rack 22 runs far away, causing the embroidery threads to be entangled and knotted with each other. The synchronous movement of the thread rack 32 and the needle bar rack 22 to change colors can keep the length of the embroidery thread consistent at all times, thereby preventing knotting and causing downtime.

[0033] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A combined super-multi-color embroidery machine, comprising a frame (1), a head component (2) and a thread rack component (3) arranged on the frame (1), wherein the thread rack component (3) is arranged above the head component (2) and can move laterally relative to the frame (1), the head component (2) comprises a head assembly (21) fixed to the frame, a plurality of needle bar frames (22) arranged side by side and capable of moving laterally, a thread clamp (23) arranged on the needle bar frame (22), and a color changing mechanism (24) for driving the needle bar frame (22) to move laterally to change colors, characterized in that: The color changing mechanism (24) comprises a first driving motor (241) fixed to the machine head assembly (21), a transmission mechanism (242) connecting the needle bar frame (22) and the first driving motor (241), the transmission mechanism (242) comprising a transmission structure (2421) connected to the first driving motor (241), and a matching structure (221) fixed to the needle bar frame (22), the transmission structure (2421) rotates around its own axis under the drive of the first driving motor (241), and the matching structure (221) and the transmission structure (2421) are slidably matched, so that the matching structure (221) moves left or right as the transmission structure (2421) rotates; The transmission mechanism (242) is provided with a transmission shaft (2422), the transmission shaft (2422) is movably arranged on the head assembly (21) and is transmission-connected to the first drive motor (241) via a first conveyor belt (2423), the transmission structure (2421) is sleeved on the transmission shaft (2422), and can rotate along the axis direction of the transmission shaft (2422); The matching structure (221) is configured as a plurality of cylindrical protrusion structures which are arranged at intervals along the length direction of the needle bar frame (22); one of the side surfaces of the transmission structure (2421) has a first pushing portion (24211) extending inward along its length direction; the first pushing portion (24211) is located on the left side of the matching structure (221) and its inner side surface abuts against the matching structure (221); the inner side surface of the first pushing portion (24211) is inclined so that when the transmission structure (2421) rotates, the first pushing portion (24211) abuts against the matching structure (221) and moves to the right until the first pushing portion (24211) abuts against the left side of the adjacent matching structure (221).

2. The combined super multi-color embroidery machine according to claim 1, characterized in that: A second pushing portion (24212) is provided on another side surface of the transmission structure (2421) extending inwardly along its length direction. The second pushing portion (24212) is located on the right side of the matching structure (221) and its inner side surface abuts against the matching structure (221). The inner side surface of the second pushing portion (24212) is arranged obliquely and in the same direction as the inner side surface of the first pushing portion (24211) so that when the transmission structure (2421) rotates, the second pushing portion (24212) abuts against the matching structure (221) and moves to the left until the second pushing portion (24212) abuts against the right side of the adjacent matching structure (221).

3. The combined super multi-color embroidery machine according to claim 2, characterized in that: The transmission structure (2421) is configured as a cam-shaped structure sleeved on the transmission shaft (2422); the transmission structure (2421) is recessed inwardly along its circumference to form a groove (24213); the first pushing portion (24211) and the second pushing portion (24212) are formed by protruding outwardly along the groove (24213); and the matching structure (221) is located in the groove (24213).

4. The combined super multi-color embroidery machine according to claim 3, characterized in that: The outer sleeve of the matching structure (221) is provided with a rotating structure (2211) that can rotate around the axis direction of the matching structure (221), and the rotating structure (2211) is slidably matched with the transmission structure (2421).

5. The combined super multi-color embroidery machine according to claim 1, characterized in that: A machine head housing (211) is provided on both sides of the machine head assembly (21), and color-changing guide rails (212) extending along the length direction thereof are provided at the upper and lower ends of the machine head housing (211), respectively, and the needle bar frame (22) is slidably disposed on the color-changing guide rails (212).

6. The combined super multi-color embroidery machine according to claim 1, characterized in that: The thread rack component (3) comprises a bottom plate (31) fixedly connected to the frame (1), a thread rack (32) for placing embroidery thread, and a driving mechanism (33) for driving the thread rack (32) to move horizontally. The thread rack (32) is slidably arranged on the bottom plate (31). The driving mechanism (33) comprises a mounting seat (331) fixed to the bottom plate (31). A first transmission wheel (332) and a second transmission wheel (333) are respectively arranged at two ends of the mounting seat (331). The first transmission wheel (332) and the second transmission wheel (333) are driven by a second conveyor belt (334). The first transmission wheel (332) is connected to a second driving motor (336). A connecting piece (335) is fixed on the second conveyor belt (334). The connecting piece (335) is fixedly connected to the thread rack (32).

7. The combined super multi-color embroidery machine according to claim 6, characterized in that: At least one linear guide rail (311) is arranged on the bottom plate (31), a slider (312) is slidably arranged on the linear guide rail (311), and the wire rack (32) is fixed on the slider (312).

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