Multi-color rope embroidery swing mechanism and embroidery machine

Abstract

The application discloses a multi-color rope embroidery swing rope mechanism and an embroidery machine. The swing rope mechanism comprises a swing rope component, the swing rope component comprises a transversely extending ring beating seat and at least two ring beating head assemblies arranged side by side along the transverse extension direction of the ring beating seat, and the swing rope mechanism further comprises at least two swing rope driving assemblies corresponding to the at least two ring beating head assemblies. The swing rope driving assembly comprises a swing rope driving motor, and each swing rope driving motor drives one ring beating head assembly to swing. According to the technical scheme of the application, the swing process of each ring beating head assembly can be kept accurate and stable.

Description

Technical Field

[0001] This invention belongs to the technical field of embroidery equipment, specifically relating to a rope embroidery machine. Background Technology

[0002] To drive at least two (color) ringing head assemblies to oscillate, existing technologies employ a single oscillating rope drive motor, which drives the assemblies via a belt drive mechanism. Specific solutions typically fall into two categories: one where the oscillating rope drive motor drives a main synchronous belt pulley, which in turn drives multiple ringing heads to oscillate as it passes through its corresponding synchronous belt; the other involves a color-changing structure, where changing colors causes the oscillating rope drive motor to drive the corresponding ringing head to oscillate. In the first method, multiple ringing heads are always in an oscillating state; in the second method, the added color-changing structure results in less stable transmission. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a multi-color rope embroidery swing rope mechanism and embroidery machine to ensure the precise and stable swing process of each loop head component.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] First, a multi-color rope embroidery swinging rope mechanism is provided, including a swinging rope component. The swinging rope component includes a laterally extending looping seat and at least two looping head assemblies arranged side by side along the lateral extension direction of the looping seat. The swinging rope mechanism also includes at least two swinging rope driving assemblies corresponding to the at least two looping head assemblies. The swinging rope driving assemblies include swinging rope driving motors, and each swinging rope driving motor drives one looping head assembly to swing.

[0006] Preferably, at least two oscillating rope drive motors are arranged in a straight line along the longitudinal direction; and / or, each loop head assembly is provided with an oscillating rope pulley, and each oscillating rope drive motor is driven by a synchronous belt to the oscillating rope pulley of the corresponding loop head assembly.

[0007] Preferably, at least two swing rope drive assemblies include a first swing rope drive assembly, which includes a first swing rope drive motor, a first transmission pulley, a second transmission pulley, a third transmission pulley, a first transmission synchronous pulley, a first transmission synchronous belt, a second transmission synchronous belt, a first swing rope synchronous belt, and a first swing rope pulley. The first swing rope drive motor drives the first transmission pulley, the first transmission pulley drives the second transmission pulley via the first transmission synchronous belt, the second transmission pulley and the third transmission pulley are coaxially arranged and synchronously driven, the third transmission pulley drives the first transmission synchronous pulley via the second transmission synchronous belt, and the first transmission synchronous pulley drives the first swing rope pulley via the first swing rope synchronous belt.

[0008] Preferably, at least two swing rope drive assemblies further include a second swing rope drive assembly, which includes a second swing rope drive motor, a fourth transmission pulley, a second transmission synchronous pulley, a third transmission synchronous belt, a second swing rope synchronous belt, and a second swing rope pulley; the second swing rope drive motor drives the fourth transmission pulley, the fourth transmission pulley drives the second transmission synchronous pulley through the third transmission synchronous belt, and the second transmission synchronous pulley drives the second swing rope pulley through the second swing rope synchronous belt.

[0009] Preferably, at least two swing rope drive assemblies further include a third swing rope drive assembly, which includes a third swing rope drive motor, a fifth transmission pulley, a third transmission synchronous pulley, a fourth transmission synchronous belt, and a third swing rope synchronous belt. The third swing rope drive motor drives the fifth transmission pulley, the fifth transmission pulley drives the third transmission synchronous pulley through the fourth transmission synchronous belt, and the third transmission synchronous pulley drives the third swing rope pulley through the third swing rope synchronous belt.

[0010] Preferably, the first swing rope pulley, the second swing rope pulley, the third swing rope pulley, and the first transmission synchronous pulley, the second transmission synchronous pulley, and the third transmission synchronous pulley are arranged in a straight line along the transverse direction, and the first swing rope pulley, the second swing rope pulley, and the third swing rope pulley are arranged sequentially from the middle to one side of the transverse direction, and the first transmission synchronous pulley, the second transmission synchronous pulley, and the third transmission synchronous pulley are arranged sequentially from the middle to one side of the transverse direction.

[0011] Preferably, the second swing rope drive assembly further includes a first expanding synchronous pulley, through which the second swing rope synchronous belt avoids the first transmission synchronous pulley, the first swing rope synchronous belt and the first swing rope pulley.

[0012] Preferably, the third swing rope drive assembly further includes a second expanding synchronous pulley, through which the third swing rope synchronous belt avoids the first expanding synchronous pulley, the first transmission synchronous pulley, the second transmission synchronous pulley, the first swing rope synchronous belt, the second swing rope synchronous belt, the first swing rope pulley, and the second swing rope pulley.

[0013] Preferably, the first expanding synchronous pulley is located to the side at the midpoint between the first and second transmission synchronous pulleys, and the second expanding synchronous pulley is located to the side at the midpoint between the second and third transmission synchronous pulleys.

[0014] Secondly, a multi-color rope embroidery machine is provided, which is equipped with the aforementioned rope-swinging mechanism.

[0015] The technical solution adopted in this invention has the following beneficial effects:

[0016] Since each loop-forming head assembly is equipped with a swing rope drive motor, and each swing rope drive motor drives one loop-forming head assembly to swing, and each swing rope drive motor and its corresponding loop-forming head assembly are equipped with a synchronous belt assembly, each swing rope drive motor can precisely control the swing speed and angle of the loop-forming head assembly, and the synchronous belt assembly can keep the transmission between each swing rope drive motor and its corresponding loop-forming head assembly precisely synchronized, so that the swing process of each loop-forming head assembly can remain precise and stable.

[0017] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0018] The invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the multi-color rope embroidery device of the present invention installed on the head of a flat embroidery machine;

[0020] Figure 2 This is a schematic diagram of the structure of the multi-color rope embroidery device of the present invention. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the structure of the multi-color rope embroidery device of the present invention. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the rope-laying component in the multi-color rope embroidery device of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the multi-color rope embroidery device of the present invention. Figure 3 ;

[0024] Figure 6 This is a schematic diagram of the rope clamping mechanism of the multi-color rope embroidery device of the present invention. Figure 1 ;

[0025] Figure 7 This is a schematic diagram of the rope clamping mechanism of the multi-color rope embroidery device of the present invention. Figure 2 ;

[0026] Figure 8 This is a schematic diagram of the rope clamping mechanism of the multi-color rope embroidery device of the present invention. Figure 3 ;

[0027] Figure 9 This is a schematic diagram of the cooperative structure of the rope clamping mechanism and the rope cutting mechanism of the multi-color rope embroidery device of the present invention;

[0028] Reference numerals: 1. Swing rope mechanism; 100. Swing rope seat; 1011. Seat body; 1012. Loop head mounting hole; 1013. Top cover; 111. First swing rope drive motor; 112. First transmission pulley; 113. First transmission synchronous belt; 114. Second transmission pulley; 115. Third transmission pulley; 116. Second transmission synchronous belt; 117. First swing rope synchronous belt; 118. First loop head assembly; 119. First swing rope pulley; 1191. Second swing rope drive motor; 121. Fourth transmission pulley; 122. Third transmission synchronous belt; 123. Second transmission synchronous belt; 14. Wheel 124, second swing rope timing belt 125, first expanding timing pulley 126, second loop head assembly 127, second swing rope pulley 1271; third swing rope drive motor 131, fifth transmission pulley 132, fourth transmission timing belt 133, third transmission timing pulley 134, third swing rope timing belt 135, second expanding timing pulley 136, third loop head assembly 137, loop head body 1370, third swing rope pulley 1371, rope hole 1372, bearing inner ring 1373, cage 1374, bearing ball 1375, limiting protrusion ring 1376;

[0029] 2. Rope embroidery support frame, first rope feeding motor 211, first rope passing spring 212, first color swing rope tensioning mechanism 213; second rope feeding motor 221, second rope passing spring 222, second color swing rope tensioning mechanism 223; third rope feeding motor 231, third rope passing spring 232, third color swing rope tensioning mechanism 233; feeding mechanism 3, embroidery machine head 4, machine head housing 41, needle bar frame 42, needle bar 421, embroidery needle 422;

[0030] The system includes: a rope clamping mechanism 5, a rope clamping and releasing motor 51, a connecting sleeve 511, a lever support frame 512, a three-color rope clamping assembly 52, a first rope clamping assembly 521, a first drive link 5211, a first return torsion spring 5212, a first small link 5213, a first translation link 5214, a first guide groove 52141, a first push-pull link 5215, a first rope clamping hook 5216, a first rope clamping post 5217, a second rope clamping assembly 522, a second drive link 5221, a second return torsion spring 5222, a second translation link 5224, a second push-pull link 5225, and a second rope clamping hook 5226. The following components are included: second rope clamping post 5227, third rope clamping assembly 523, third drive link 5231, third reset torsion spring 5232, third small link 5233, third translation link 5234, third tail end side extension 52341, third head end side extension 52342, third push-pull link 5235, third rope clamping hook 5236, third rope clamping post 5237, lever 55, rotating part 551, actuating part 552, color changing drive structure 56, rope clamping color changing motor 561, lead screw nut 562, lead screw support seat 563, color changing slider 564; rope cutting mechanism 6. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0032] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0033] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," "rear," "lateral," and "longitudinal," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0037] like Figure 1As shown, the multi-color rope embroidery device is installed on the head 4 of a conventional flat embroidery machine, thus forming the head of the rope embroidery machine. Correspondingly, the rope embroidery machine includes one or more embroidery machine heads 4. The embroidery machine head includes a head housing 41 and a needle bar frame 42 that is laterally slidably installed on the head housing. A row of needle bars 421 is arranged laterally on the needle bar frame 42, and embroidery needles 422 are correspondingly arranged on the needle bars. Specifically, the multi-color rope embroidery device is installed on the side of the needle bar frame, including a rope embroidery bracket 2 and a fixed bracket. A rope-swinging mechanism 1 is provided on the rope embroidery bracket 2. The rope-swinging mechanism 1 includes a rope-swinging component, wherein the rope-swinging component includes a laterally extending rope-swinging seat 100 and at least two loop-head assemblies arranged side by side along the extension direction of the rope-swinging seat. The loop-head assemblies are rotatably connected to the rope-swinging seat 100. The rope-swinging seat 100 extends laterally in front of the needle bar frame so that multiple loop-head assemblies are correspondingly located below multiple embroidery needles, so that one loop-head assembly corresponds to one embroidery needle.

[0038] The spacing between two adjacent loop-forming head assemblies is fixed, and the spacing between two adjacent loop-forming head assemblies is equal to the spacing between the two needle bars on the corresponding embroidery machine head.

[0039] The fixed bracket is fixed to the side of the needle bar frame. A retraction mechanism 3 is provided between the rope embroidery bracket and the fixed bracket. The retraction mechanism is used to drive the rope embroidery bracket to retract and extend. When it extends, the rope seat 100 is sent to the lower side of the needle bar frame 42. When the rope seat 1 is working, it works with the embroidery needle to perform rope embroidery. When it retracts, the rope seat 100 is moved away from the lower side of the needle bar frame 42, and flat embroidery can be performed normally.

[0040] The loop-making head assembly includes a loop-making head body, which is a ring-shaped body with a central through hole for the embroidery needle to pass through. The lower part of the loop-making head body has a rope-threading hole on the circumferential outer side of the central through hole.

[0041] Taking the three-color rope embroidery as an example, the first loop head body is provided with a first rope hole for the first color rope to pass through, the second loop head body is provided with a second rope hole for the second color rope to pass through, and the third loop head body is provided with a third rope hole for the third color rope to pass through.

[0042] Example 1

[0043] To drive at least two (color) ringing head assemblies to oscillate, existing technologies employ a single oscillating rope drive motor, which drives the assemblies via a belt drive mechanism. Specific solutions typically fall into two categories: one where the oscillating rope drive motor drives a main synchronous belt pulley, which in turn drives multiple ringing heads to oscillate as it passes through its corresponding synchronous belt; the other involves a color-changing structure, where changing colors causes the oscillating rope drive motor to drive the corresponding ringing head to oscillate. In the first method, multiple ringing heads are always in an oscillating state; in the second method, the added color-changing structure results in less stable transmission.

[0044] To address the aforementioned issues, in this embodiment, the swing rope mechanism further includes at least two swing rope drive components corresponding to at least two loop-forming head assemblies. Each swing rope drive component includes a swing rope drive motor and a timing belt assembly. Specifically, one swing rope drive motor is provided for each loop-forming head assembly, and each motor drives one loop-forming head assembly to swing. A timing belt assembly connects each motor to its corresponding loop-forming head assembly. Therefore, each swing rope drive motor can precisely control the swing speed and angle of the loop-forming head assembly, and the timing belt assembly maintains precise synchronization between each motor and its corresponding assembly, ensuring precise and stable swinging of each loop-forming head assembly.

[0045] like Figures 1 to 5 As shown, in this embodiment, the three-color rope embroidery is still used as an example for explanation. Three loop-making head components are correspondingly provided: the first loop-making head component 119, the second loop-making head component 127, and the third loop-making head component 137. Therefore, three swing rope drive components are correspondingly provided: the first swing rope drive component, the second swing rope drive component, and the third swing rope drive component.

[0046] The first swing rope drive assembly includes a first swing rope drive motor 111, a first transmission pulley 112, a second transmission pulley 114, a third transmission pulley 115, a first transmission synchronous pulley 117, a first transmission synchronous belt 113, a second transmission synchronous belt 116, a first swing rope synchronous belt 118, and a first swing rope pulley 1191. The first swing rope drive motor 111 drives the first transmission pulley 112, which in turn drives the second transmission pulley 114 via the first transmission synchronous belt 113. The second transmission pulley 114 and the third transmission pulley 115 are coaxially arranged and synchronously driven. The third transmission pulley 115 drives the first transmission synchronous pulley 117 via the second transmission synchronous belt 116, and the first transmission synchronous pulley 117 drives the first swing rope pulley 1191 via the first swing rope synchronous belt 118. The first swing rope pulley 1191 is located on the first loop head assembly 119, thus enabling the swing rope of the first loop head assembly 119 through the first swing rope drive assembly.

[0047] The second swing rope drive assembly includes a second swing rope drive motor 121, a fourth transmission pulley 122, a second transmission synchronous pulley 124, a third transmission synchronous belt 123, a second swing rope synchronous belt 125, and a second swing rope pulley 1271. The second swing rope drive motor 121 drives the fourth transmission pulley 122, which in turn drives the second transmission synchronous pulley 124 via the third transmission synchronous belt 123. The second transmission synchronous pulley 124 then drives the second swing rope pulley 1271 via the second swing rope synchronous belt 125. The second swing rope pulley 1271 is mounted on the second looping head assembly 127, thus enabling the swing rope movement of the second looping head assembly 127 through the second swing rope drive assembly.

[0048] The third swing rope drive assembly includes a third swing rope drive motor 131, a fifth transmission pulley 132, a third transmission synchronous pulley 134, a fourth transmission synchronous belt 133, a third swing rope synchronous belt 135, and a third swing rope pulley 1371. The third swing rope drive motor 131 drives the fifth transmission pulley 132, which in turn drives the third transmission synchronous pulley 134 via the fourth transmission synchronous belt 133. The third transmission synchronous pulley 134 then drives the third swing rope pulley 1371 via the third swing rope synchronous belt 135. The third swing rope pulley 1371 is mounted on the third looping head assembly 137, thus enabling the swing rope mechanism of the third looping head assembly 137.

[0049] Specifically, such as Figure 5 As shown, the first oscillating rope pulley 1191, the second oscillating rope pulley 1271, the third oscillating rope pulley 1371, and the first transmission synchronous pulley 117, the second transmission synchronous pulley 124, and the third transmission synchronous pulley 134 are arranged in a straight line along the transverse direction. Furthermore, the first oscillating rope pulley, the second oscillating rope pulley, and the third oscillating rope pulley are arranged sequentially from the middle to one side of the transverse direction, while the first transmission synchronous pulley, the second transmission synchronous pulley, and the third transmission synchronous pulley are arranged sequentially from the middle to the other side of the transverse direction.

[0050] Furthermore, the swing rope seat 100 is provided with a loop head mounting part corresponding to the above-mentioned loop head assembly mounting position, and the loop head assembly is installed at the middle position of the width of the loop head mounting part.

[0051] In existing technical solutions, the pulley that drives the oscillating rope pulley is located on one side of its longitudinal direction, resulting in a relatively large loop holder. This makes it difficult for the embroidery operator to bring their hand, which is holding the thread end, close to the embroidery needle hole, hindering threading. In this embodiment, the first, second, and third transmission synchronous pulleys are longitudinally staggered with the first, second, and third oscillating rope pulleys, forming a horizontally arranged linear structure. The width of the oscillating rope holder at the corresponding positions of the first, second, and third oscillating rope pulleys is only slightly larger than the width of the loop holder assembly. Compared to existing synchronous belt drive methods, this reduces the width of the loop holder mounting portion, allowing the embroidery operator to bring their hand, holding the thread end, closer to the embroidery needle hole, facilitating threading.

[0052] To avoid interference in the vertical direction, the second transmission synchronous belt 116, the third transmission synchronous belt 123, and the fourth transmission synchronous belt 133 are staggered in the vertical direction. Correspondingly, the first transmission synchronous pulley 117, the second transmission synchronous pulley 124, and the third transmission synchronous pulley 134 are at different heights. In this way, within a limited space, the three sets of synchronous belt drive structures do not interfere with each other.

[0053] Because the first swing rope pulley 1191, the second swing rope pulley 1271, and the third swing rope pulley 1371 are arranged in a line and at the same height, a first expanding synchronizer pulley 126 and a second expanding synchronizer pulley 136 are provided to avoid interference between the first swing rope synchronous belt 118, the second swing rope synchronous belt 125, and the third swing rope synchronous belt 135, as well as interference with other components. Specifically, the second swing rope drive assembly also includes the first expanding synchronizer pulley 126, which allows the second swing rope synchronous belt 125 to avoid the first transmission synchronizer pulley, the first swing rope synchronous belt, and the first swing rope pulley. The third swing rope drive assembly also includes the second expanding synchronizer pulley 136, which allows the third swing rope synchronous belt 135 to avoid the first expanding synchronizer pulley, the first transmission synchronizer pulley, the second transmission synchronizer pulley, the first swing rope synchronous belt, the second swing rope synchronous belt, and the first and second swing rope pulleys. The first expanding synchronous pulley 126 is located to the side at the midpoint between the first and second transmission synchronous pulleys to expand the second swing rope synchronous belt outwards. The second expanding synchronous pulley 136 is located to the side at the midpoint between the second and third transmission synchronous pulleys to expand the third swing rope synchronous belt outwards.

[0054] Furthermore, at least two rope drive motors are arranged in a straight line along the longitudinal direction, and are of the same model. Their axes are perpendicular to the horizontal plane and they are set at the same height. The first rope drive motor 111 is located on the side away from the rope seat, the second rope drive motor 121 is located on the side closer to the rope seat, and the third rope drive motor 131 is located between the first rope drive motor 111 and the second rope drive motor 121. This is because the lateral space between two adjacent embroidery machine heads is small, and since a multi-color rope embroidery device is installed, the lateral width of the multi-color rope embroidery device must be minimized. The arrangement of at least two rope drive motors in a straight line along the longitudinal direction can minimize the increase in the lateral width of the multi-color rope embroidery device. Based on the above design, in order to achieve transmission with the three looping head assemblies, the output shafts of the second and third oscillating rope drive motors 121 and 131 extend downwards beyond the output shaft of the first oscillating rope drive motor 111, or are connected to an extended shaft via a coupling, and then connected to the fourth and fifth transmission pulleys 122 and 132, with the fourth transmission pulley 122 being lower than the fifth transmission pulley 132. Simultaneously, the second and third transmission pulleys 114 and 115 are coaxially arranged vertically, with the second transmission pulley 114 at the same height as the first transmission pulley 112, and the third transmission pulley 115 lower than the fourth transmission pulley 122.

[0055] In addition, at least two-color rope embroidery components are provided on the rope embroidery bracket 2 corresponding to at least two loop-making head components. Each color rope embroidery component feeds a corresponding color rope to each loop-making head component and keeps the rope passing through the loop-making head component taut. In this embodiment, three-color rope embroidery components are provided corresponding to the three-color loop-making head components, namely, a first-color rope embroidery component, a second-color rope embroidery component, and a third-color rope embroidery component, and the first-color rope embroidery component, the second-color rope embroidery component, and the third-color rope embroidery component have the same structure.

[0056] The first-color rope embroidery assembly includes a first-color rope feeding / receiving mechanism, a first rope-passing spring 212, and a first-color swaying rope tensioning mechanism 213. The first-color rope feeding / receiving mechanism typically uses two feeding / receiving wheels to hold the rope for feeding / receiving, with one of the feeding / receiving wheels driven by a first feeding / receiving motor 211. That is, the first-color rope feeding / receiving mechanism is equipped with a first feeding / receiving motor 211 and a first feeding / receiving wheel assembly. When the first loop head assembly rotates, the first-color swaying rope tensioning mechanism pulls the first-color rope, keeping it taut at the first loop head. The first-color rope is introduced through the inlet of the first feeding / receiving wheel assembly, passes through the first rope-passing spring 212, then through the first-color swaying rope tensioning mechanism, and finally enters the rope-passing hole of the first-color loop head assembly. The first-color swaying rope tensioning mechanism includes a first-color rope-passing frame movably connected to the rope embroidery frame and a first swaying rope spring connected between the rope embroidery frame and the first-color rope-passing frame. The first color rope guide frame is equipped with a rope guide lever. One end of the lever is connected to a pin, which is mounted on the rope embroidery bracket. The other end of the lever is connected to a rope guide loop, through which the rope passes. The first rope guide spring is a torsion spring, which drives the first color rope guide frame to twist and tighten the rope.

[0057] The second-color rope embroidery assembly has the same structure as the first-color rope embroidery assembly. It includes a second-color rope feeding / unfeeding mechanism, a second rope-passing spring 222, and a second-color rope-swinging tensioning mechanism 223. The second-color rope feeding / unfeeding mechanism is equipped with a second rope feeding / unfeeding motor 221 and a second rope feeding / unfeeding wheel assembly. The third-color rope embroidery assembly includes a third-color rope feeding / unfeeding mechanism, a third rope-passing spring 232, and a third-color rope-swinging tensioning mechanism 233. The third-color rope feeding / unfeeding mechanism is equipped with a third rope feeding / unfeeding motor 231 and a third rope feeding / unfeeding wheel assembly.

[0058] Example 2

[0059] The existing multi-color rope embroidery device is designed with a rope clamping mechanism in conjunction with the rope cutting mechanism. The rope clamping mechanism is installed on the back side of the thread clamp. Its function is that when one cycle of rope embroidery is completed, the rope cutting mechanism cuts the rope from the fabric and fixes it on the rope clamping mechanism. When the next cycle of embroidery begins, the rope can be used for the next cycle of rope embroidery.

[0060] Existing cord clamping mechanisms can be used on regular single-color cord embroidery or two-color cord embroidery with interlaced needles, but for three-color cord embroidery devices or structures with more colors, the spacing between the cord pulleys is only 15 mm. If the three cords with a 15 mm spacing are fixed one by one, the existing cord clamping mechanisms are difficult to complete in terms of space.

[0061] like Figures 6 to 9 As shown, in this embodiment, the rope clamping mechanism 5 includes a rope clamping and releasing motor 51, at least two rope clamping components corresponding to at least two looping head components, and a color-changing drive structure 56, which includes a rope clamping and color-changing motor 561.

[0062] Each loop-making head assembly is equipped with a corresponding rope clamping assembly. Therefore, multi-color rope embroidery is equipped with at least two rope clamping assemblies. When the loop-making head assembly is not working, the corresponding rope clamping assembly clamps the rope. When the loop-making head assembly of that color needs to work, the rope clamping release motor drives the corresponding rope clamping assembly to release the rope.

[0063] Due to space constraints, it's not feasible to install a separate rope-clamping and releasing motor for each rope-clamping assembly. Therefore, only one rope-clamping and releasing motor is used, employing a rope-clamping color-changing motor to drive the movement of the rope-clamping and releasing motor to change colors. Before changing colors, the releasing motor drives one rope-clamping assembly to release the rope; after changing colors, it drives the other rope-clamping assembly to release the rope. This saves space and allows for the arrangement of multi-color rope-clamping mechanisms within a limited space.

[0064] In this embodiment, the rope clamping assembly includes a hinged rope clamping hook, a rope clamping connecting rod component that drives the rope clamping hook to rotate for clamping and resetting the rope, and a rope clamping post that cooperates with the rope clamping hook to clamp the rope. The rope clamping hook and the rope clamping post are located on one longitudinal side of the corresponding loop-forming head assembly (with the rope swing seat located at the front of the embroidery machine head as a reference, the rope clamping hook and the rope clamping post are located at the rear of the rope swing seat). Since the rope clamping hook and the rope clamping post are located on one longitudinal side of the corresponding loop-forming head assembly, the rope clamping hooks and rope clamping posts of multiple rope clamping assemblies are spaced apart on the sides of multiple loop-forming head assemblies, which is easy to implement in terms of space, does not occupy much longitudinal space, and each rope clamping hook is also spaced apart from the corresponding rope clamping post when clamping the rope, so they do not interfere with each other.

[0065] Specifically, the rope clamping linkage component includes a drive linkage hinged to a drive pin and a return torsion spring mounted on the drive pin and connected to the drive linkage. The drive linkage is located on one side of the swing rope seat, and the drive linkages of at least two rope clamping assemblies are arranged side by side in the longitudinal direction. The upper end of the drive linkage is provided with a driven part, which receives the driving force of the rope clamping and releasing motor to realize the swing of the drive linkage. Since the lateral space between two adjacent machine heads is limited, the lateral space of the corresponding ring-forming head seat is restricted. Therefore, the drive linkages of at least two rope clamping assemblies are arranged side by side in the longitudinal direction. At the same time, the rope clamping and releasing motor and the rope clamping and color-changing motor are located on one side of the longitudinal direction of the drive linkage, and the rope clamping and releasing motor is located close to the drive linkage. This allows the rope clamping and releasing motor and the rope clamping and color-changing motor to be arranged in the longitudinal direction. The rope clamping and color-changing motor drives the rope clamping and releasing motor to slide in the longitudinal direction to change colors, saving lateral space. Because the drive linkage is connected to the reset torsion spring, the reset torsion spring exerts a force on the rope clamping assembly, which clamps the rope when the loop head assembly is not in operation.

[0066] Preferably, the rope-clamping release motor and the rope-clamping color-changing motor are located on the longitudinal side of the drive link, with the rope-clamping release motor positioned close to the drive link. The rope-clamping color-changing motor drives the rope-clamping release motor to slide longitudinally for color changing. The push-pull link can be pushed and pulled laterally, thereby causing the rope-clamping hook to loosen the rope through the pulling action of the push-pull link.

[0067] Furthermore, the rope clamping linkage component also includes a push-pull linkage, which is located on one longitudinal side of the swing rope seat, and its head end is hinged to the rope clamping hook. The rope clamping linkage component also includes a translation linkage and a small linkage. One end of the small linkage is hinged to the lower end of the drive linkage, and the other end is hinged to the tail end of the translation linkage. The translation linkage translates under the swing rope seat and has a guide groove. The lower side of the swing rope seat has a guide pin, and the guide groove cooperates with the guide pin. Alternatively, guide balls can be provided on the guide pin to roll in cooperation with the guide groove. The translation link includes a horizontally extending planar extension, a head-end side extension extending upward from the head side of the planar extension, and a tail-end side extension extending upward from the tail side of the planar extension. The planar extension is located below the swing rope seat. The tail-end side extension is located on the lateral side of the swing rope seat and is hinged to the small connecting rod. The head-end side extension is located on the longitudinal side of the swing rope seat and is hinged to the push-pull link. The translation link moves below the swing rope seat, thus not occupying lateral or longitudinal space. Because the translation link has a guide groove and the swing rope seat has a guide pin, the guide groove and guide pin cooperate to ensure that the translation link does not misalign during lateral translation. The translation link has a planar extension, a head-end side extension, and a tail-end side extension. Because the planar extension is located below the swing rope seat, the planar extensions of multiple translation links can be staggered in the height and longitudinal directions, thus allowing for arrangement within a limited space. Since the tail end side extension is located on the lateral side of the swing rope seat and is hinged to the small connecting rod, and the head end side extension is located on the longitudinal side of the swing rope seat and is hinged to the push-pull connecting rod, the space under the swing rope seat can be effectively utilized while ensuring that the translation connecting rod is connected to the small connecting rod and the push-pull connecting rod.

[0068] Specifically, in this embodiment, the cord clamping mechanism, corresponding to the three-color cord embroidery, is provided with a three-color cord clamping assembly 52, namely, a first cord clamping assembly 521, a second cord clamping assembly 522, and a third cord clamping assembly 523. Specifically, the first cord clamping assembly 521 includes a first drive link 5211, a first reset torsion spring 5212, a first small link 5213, a first translation link 5214, a first push-pull link 5215, a first cord clamping hook 5216, and a first cord clamping post 5217. The second cord clamping assembly 522 includes a second drive link 5221, a second reset torsion spring 5222, a second small link, a second translation link 5224, a second push-pull link 5225, a second cord clamping hook 5226, and a second cord clamping post 5227. The third rope clamping assembly 523 includes a third drive link 5231, a third reset torsion spring 5232, a third small link 5233, a third translation link 5234, a third push-pull link 5235, a third rope clamping hook 5236, and a third rope clamping post 5237. For example... Figure 8As shown, taking the third rope clamping assembly 523 as an example, the third translation link 5234 is provided with a third head end side extension 52342 and a third tail end side extension 52341. Taking the first rope clamping assembly 521 as an example, the first translation link 5214 is provided with a first guide groove 52141, and the swing rope seat is provided with a first guide pin, which guides and cooperates with the first guide groove 52141.

[0069] The rope-releasing motor 51 drives the lever 55 to actuate the rope-clamping linkage component. The lever 55 has a deflecting part 552 that interacts with the rope-clamping linkage component and a rotating part 551 connected to the rope-releasing motor. The deflecting part 552 is offset from the rotation center of the rotating part 551. Therefore, after the rope-releasing motor drives the lever to rotate, the deflecting part swings, which can drive the rope-clamping linkage component to move, thereby loosening the rope. A connecting part is provided between the deflecting part and the rotating part, making the lever 55 as a whole Z-shaped component. A lever support frame 512 is fixed on the rope-releasing motor 51. The rotating part 551 is rotatably supported on the lever support frame 512 and connected to the motor shaft of the rope-releasing motor 51 through a connecting sleeve 511. This ensures that the lever swings around the rotating part.

[0070] To ensure color-changing accuracy, a lead screw and nut assembly is provided between the rope-clamping color-changing motor 561 and the rope-clamping and releasing motor 51. The lead screw and nut assembly includes a lead screw and nut 562 and a lead screw support 563, wherein the nut is threadedly connected to the lead screw and connected to the color-changing slider 564. Furthermore, the rope-clamping color-changing motor 561 is mounted on the color-changing slider, which slides in conjunction with the color-changing slide rail. Therefore, when the rope-clamping color-changing motor drives the rope-clamping and releasing motor to slide longitudinally for color changing, the displacement of the rope-clamping and releasing motor can be ensured to be precise and the color changing is completed accurately.

[0071] The entire rope clamping mechanism is installed on the multi-color rope embroidery device, and its working principle is as follows:

[0072] When a certain color position of the multi-color rope embroidery device finishes working, the rope clamping assembly for that color position will automatically open the rope clamping hook. Then, the rope guide pulley for that color position will automatically turn the rope threading hole toward the rope clamping hook. At this time, the embroidery frame will pull the rope fixed between the fabric and the rope guide pulley toward the rope clamping hook position corresponding to the rope threading hole of the rope guide pulley, until the rope clamping hook can hook the rope when it is retracted. After the rope clamping hook is retracted, it will fix the rope that is threaded into the rope threading hole of the rope guide pulley. Then, the rope cutting mechanism 6 installed on the rear side of the embroidery machine housing (see...) Figure 9 The person in charge is responsible for cutting the rope fixed to the end of the fabric. At this point, the cycle of the pattern ends, and the frame can be moved or the color changed to start the next cycle of the pattern.

[0073] The first rope clamping assembly operates as follows: The rope clamping and color-changing motor drives the lead screw to rotate, which in turn drives the color-changing slider to move along the color-changing guide rail via the nut. This, in turn, drives the rope clamping and loosening motor and the lever to move longitudinally, moving the lever to a position where it can drive the first drive linkage. At this point, when the rope clamping and loosening motor drives the lever to rotate, the lever actuates the first drive linkage. The first drive linkage drives the first small linkage and the first translation linkage, which in turn drives the first push-pull linkage and the first rope clamping hook to move, thereby opening the first rope clamping hook and loosening the first colored rope. When the rope clamping and color-changing motor moves in the opposite direction and returns to its original position, the first drive linkage, the first small linkage, the first translation linkage, the first push-pull linkage, and the first rope clamping hook move in the opposite direction under the torque of the first reset torsion spring until the first rope clamping hook closes, clamping the first colored rope.

[0074] The working process of the second rope clamping assembly is as follows: Figure 7 As shown, the cord-clamping and color-changing motor drives the lead screw to rotate, which in turn drives the color-changing slider to move along the color-changing guide rail via the nut. This, in turn, drives the cord-clamping and loosening motor and the lever to move longitudinally, moving the lever to a position where it can drive the second drive linkage. At this time, when the cord-clamping and loosening motor drives the lever to rotate, the lever actuates the second drive linkage. The second drive linkage drives the second small linkage and the second translation linkage, which in turn drives the second push-pull linkage and the second cord-clamping hook to move, thereby opening the second cord-clamping hook and loosening the second colored cord. When the cord-clamping and color-changing motor moves in the opposite direction and returns to its original position, the second drive linkage, the second small linkage, the second translation linkage, the second push-pull linkage, and the second cord-clamping hook move in the opposite direction under the torque of the second reset torsion spring until the second cord-clamping hook closes and clamps the second colored cord.

[0075] The working process of the third rope clamping assembly: as follows Figure 6 As shown, the rope-clamping and color-changing motor drives the lead screw to rotate, which in turn drives the color-changing slider to move along the color-changing guide rail via the nut. This, in turn, drives the rope-clamping and loosening motor and the lever to move longitudinally, moving the lever to a position where it can drive the third drive linkage. At this time, when the rope-clamping and loosening motor drives the lever to rotate, the lever actuates the third drive linkage. The third drive linkage drives the third small linkage and the third translation linkage, which in turn drives the third push-pull linkage and the third rope-clamping hook to move, thereby opening the third rope-clamping hook and loosening the third colored rope. When the rope-clamping and color-changing motor moves in the opposite direction and returns to its original position, the third drive linkage, the third small linkage, the third translation linkage, the third push-pull linkage, and the third rope-clamping hook move in the opposite direction under the torque of the third reset torsion spring until the third rope-clamping hook closes and clamps the third colored rope.

[0076] Example 3

[0077] like Figure 4As shown, the loop-making head assembly includes a loop-making head body 1370, which is annular with a central through-hole for the embroidery needle to pass through. A cord-threading hole 1372 is provided on the lower part of the loop-making head body 1370 around the central through-hole. Correspondingly, a first-color cord-threading hole is provided on the first-color loop-making head body for a first-color cord to pass through, a second-color cord-threading hole is provided on the second-color loop-making head body for a second-color cord to pass through, and a third-color cord-threading hole is provided on the third-color loop-making head body for a third-color cord to pass through.

[0078] like Figure 4 and Figure 7 The swing rope seat 100 is provided with a seat body 1011 and a top cover 1013, wherein the seat body is provided with a ring-forming head mounting hole 1012, and the ring-forming head assembly is installed in the ring-forming head mounting hole through a bearing.

[0079] In the existing technology, the diameter of the mounting hole of the conventional loop head is φ10.5 mm, and the overall diameter of the outer bearing rotation is about φ20 mm. The needle bar spacing of the conventional standard embroidery machine is 15 mm. In order to meet the requirement of embroidery thread of the same color corresponding to the needle position for embroidery, multiple colors or specifications of rope embroidery are required. There are basically three basic design schemes.

[0080] First, the skipped-needle design allows the bobbin pulley to be positioned under two needle bars that are one needle apart. For example, if the number of needle bars on the embroidery machine head is 1, 2, 3, 4, 5, and 6, totaling 6 needle bars, the bobbin pulley can be positioned under needle bars 1 and 3 or needle bars 4 and 6. This way, after skipping one needle, there is sufficient working space. However, this design has a drawback. For example, if it is positioned under needle bars 1 and 3, it will make it inconvenient to thread needle #2, and it will basically be abandoned.

[0081] This design has little impact on two-color rope embroidery because there are still needle positions 4, 5, and 6 available for flat embroidery, which basically meets the needs of embroidery factories. However, when designing three-color or four-color rope embroidery, it occupies most of the flat embroidery needle positions. As a result, when the machine wants to embroider multi-color flat embroidery, the six-needle machine basically has no flat embroidery needle positions available, which greatly reduces the types of machines that the device can be adapted to.

[0082] Second, change the standard needle bar spacing, for example, from 15 mm to 21 mm. This provides enough space to complete the design work. The disadvantage is that many different specifications of parts need to be produced by re-molding according to the new needle bar spacing, which greatly increases the production cost.

[0083] To ensure the proper functioning of the standard oscillating rope pulley, the mounting hole for the loop head requires a space of φ10.5 mm. Figure 4As shown, in this embodiment, the ring-forming head assembly further includes a bearing inner ring 1373 integrally disposed in the middle of the ring-forming head body, a cage 1374 mounted on the bearing inner ring, and bearing balls 1375 mounted on the cage. A bearing outer ring is integrally disposed in the ring-forming head mounting hole 1012. The bearing outer ring, bearing balls, cage, and bearing inner ring are combined to form a ring-forming head bearing for rotating and supporting the rotation of the ring-forming head body 1370.

[0084] In this embodiment, the distance between two adjacent needle bars on the embroidery machine head is fixed at 15mm, the same as the distance between two adjacent loop head assemblies.

[0085] The above technical solution, because the inner ring of the bearing is integrated with the body of the embroidery head, and the outer ring of the bearing is integrated with the mounting hole of the embroidery head, eliminates the need for additional inner and outer rings, saving the overall radial space of the embroidery head assembly. This integrated bearing design significantly reduces the outer diameter of the embroidery head assembly, allowing for the design of two embroidery head assemblies within a 15mm spacing. This fully matches standard needle bar frames (15mm spacing), enabling one-to-one correspondence between the embroidery head assemblies and standard 15mm spacing needle bars when designing two-, three-, four-, or even more-color rope embroidery mechanisms. For example, in a three-color rope embroidery design, the embroidery head assemblies can correspond to needle positions 1, 2, and 3, fully utilizing each needle position and avoiding wasted machine functionality, thus greatly improving the machine's function and performance.

[0086] In this embodiment, a swing rope pulley is integrally provided on the upper part of the loop head body. Taking the three-color rope embroidery in the above embodiment as an example, specifically, the first swing rope pulley 1191, the second swing rope pulley 1271, and the third swing rope pulley 1371 are integrally provided with the first loop head body, the second loop head body, and the third loop head body, respectively.

[0087] Furthermore, the ring-forming head mounting hole 1012 has a limiting step, and the lower end of the retainer is limited in engagement with the limiting step. The upper outer circle of the retainer is provided with a limiting protrusion 1376, which is limited in engagement with the upper end face of the ring-forming head mounting hole.

[0088] It is understandable that the spacing between two adjacent needle bars and the spacing between two adjacent loop head assemblies are fixed, but not limited to 15mm, such as 15.5mm, 16mm, etc.

[0089] It is understandable that, in order to achieve more colors of rope embroidery, a fourth color rope embroidery component or more can be set, and a corresponding number of loop-making head components and rope-swinging drive components can be set. The structure and working principle are the same as those of the three-color rope embroidery device in the above embodiment.

[0090] The above description is merely a specific embodiment of the invention, but the scope of protection of the invention is not limited thereto. Those skilled in the art should understand that the invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the invention will be included within the scope of the claims.

Claims

1. A multi-color cord embroidery cord-swinging mechanism, comprising a cord-swinging component, wherein the cord-swinging component includes a laterally extending loop-forming seat and three loop-forming head assemblies arranged side-by-side along the lateral extension direction of the loop-forming seat, the spacing between two adjacent loop-forming head assemblies being fixed and equal to the spacing between two needle bars on the corresponding embroidery machine head, characterized in that... The swing rope mechanism further includes three swing rope drive components corresponding to the three loop-forming head assemblies. Each swing rope drive component includes a swing rope drive motor, and each motor drives one loop-forming head assembly to swing. The three motors are arranged in a straight line along the longitudinal direction. Each loop-forming head assembly has a swing rope pulley, and each motor is connected to its corresponding pulley via a synchronous belt. The three swing rope drive components include a first swing rope drive component, a second swing rope drive component, and a third swing rope drive component. The first swing rope drive component includes a... The system comprises a swing rope drive motor, a first transmission pulley, a second transmission pulley, a third transmission pulley, a first transmission synchronous pulley, a first transmission synchronous belt, a second transmission synchronous belt, a first swing rope synchronous belt, and a first swing rope pulley. The first swing rope drive motor drives the first transmission pulley, which in turn drives the second transmission pulley via the first transmission synchronous belt. The second and third transmission pulleys are coaxially arranged and synchronously driven. The third transmission pulley drives the first transmission synchronous pulley via the second transmission synchronous belt, and the first transmission synchronous pulley drives the first swing rope pulley via the first swing rope synchronous belt. The second swing rope drive assembly includes a second swing rope drive motor, a fourth transmission pulley, a second transmission synchronous pulley, a third transmission synchronous belt, a second swing rope synchronous belt, and a second swing rope pulley. The second swing rope drive motor drives the fourth transmission pulley, which in turn drives the second transmission synchronous pulley via the third transmission synchronous belt. The second transmission synchronous pulley then drives the second swing rope pulley via the second swing rope synchronous belt. The third swing rope drive assembly includes a third swing rope drive motor, a fifth transmission pulley, a third transmission synchronous pulley, a fourth transmission synchronous belt, and a third swing rope synchronous belt. The motor drives the fifth transmission pulley, which in turn drives the third transmission synchronous pulley via the fourth transmission synchronous belt. The third transmission synchronous pulley then drives the third swing rope pulley via the third swing rope synchronous belt. The first, second, and third swing rope pulleys, as well as the first, second, and third transmission synchronous pulleys, are arranged in a straight line along the transverse direction. The first, second, and third swing rope pulleys are arranged sequentially from the middle to one side of the transverse direction, and the first, second, and third transmission synchronous pulleys are arranged sequentially from the middle to one side of the transverse direction.

2. The multi-color rope embroidery swing rope mechanism according to claim 1, characterized in that, The second swing rope drive assembly also includes a first expanding synchronous pulley, through which the second swing rope synchronous belt avoids the first transmission synchronous pulley, the first swing rope synchronous belt and the first swing rope pulley.

3. The multi-color rope embroidery swing rope mechanism according to claim 2, characterized in that, The third swing rope drive assembly also includes a second expansion synchronous pulley, which allows the third swing rope synchronous belt to avoid the first expansion synchronous pulley, the first transmission synchronous pulley, the second transmission synchronous pulley, the first swing rope synchronous belt, the second swing rope synchronous belt, the first swing rope pulley, and the second swing rope pulley.

4. The multi-color rope embroidery swing rope mechanism according to claim 3, characterized in that, The first expanding synchronous pulley is located to the side at the middle position between the first transmission synchronous pulley and the second transmission synchronous pulley, and the second expanding synchronous pulley is located to the side at the middle position between the second transmission synchronous pulley and the third transmission synchronous pulley.

5. A multi-color rope embroidery machine, characterized in that, The device is equipped with a swing rope mechanism as described in any one of claims 1 to 4.

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