Reversing mechanism of multi-directional towel embroidery device with self-locking function and towel embroidery machine

Abstract

The present invention discloses a reversing mechanism and a towel embroidery machine for a multi-directional towel embroidery device with a self-locking function. The device comprises a swing needle that moves back and forth linearly on opposite sides and changes its direction of movement after reversing. A reversing fixed ring is provided with a reversing self-locking ring surface. A swing needle stopper is provided with two one-way self-locking components that cooperate with the reversing self-locking ring surface for self-locking, with the two one-way self-locking components self-locking in opposite directions. A swing needle driver comprises a swing needle driver and a reversing unlocking component. The swing needle driver drives the swing needle to reciprocate within a set range. The reversing unlocking component drives one of the one-way self-locking components to unlock the reversing self-locking ring surface when the swing needle stopper switches from a fixed state to a reversing state. The swing needle driver drives the swing needle stopper to rotate relative to the center of the reversing fixed ring to reverse direction during reversing. The present invention is provided with a self-locking structure that enables bidirectional rotation of the swing needle stopper while also maintaining a self-locking function, allowing it to rotate 360 ​​degrees to any working position.

Description

Technical field

[0001] The invention belongs to the technical field of embroidery equipment, and particularly relates to a towel embroidery device. [Background Technology]

[0002] The main principle of the one-way small towel device currently on the market is that it is hung on one side of the embroidery machine casing. When cooperating with the embroidery machine, the device motor drives the needle to swing left and right under the embroidery machine needle, allowing the embroidery thread to be embroidered on the needle, forming raised thread loops. The embroidery frame runs along the direction of the needle to remove the formed thread loops from the needle. At this time, the raised thread loops are embroidered on the embroidery. The thread loops are similar to the thread loops on towels that people commonly use, so it is called a towel embroidery device.

[0003] The main drawbacks are:

[0004] (1) The one-way small towel device can only work in a single direction along the embroidery frame. However, a complete embroidery pattern basically requires a combination of multiple rows of thread loop protrusions. In order to complete a complete embroidery, the one-way small towel device needs to be raised and stopped after completing the work in one direction. The embroidery machine embroiders a row of embroidery, which is not required for the single needle, and moves it to a position where the device can work. Then the device is lowered to start the next cycle of work. This reduces the output of embroidery and increases the processing cost of customers.

[0005] (2) The one-way small towel device can only complete one thread loop height adjusted during installation. However, with the improvement of people's living standards, the demand for layered and three-dimensional embroidery is getting higher and higher. The one-way small towel can no longer meet the demand for multi-layered towel embroidery.

[0006] Based on this, the applicant designed a towel embroidery device that can work in multiple directions. For details, please refer to the Chinese invention patent with publication number 113604994A, which discloses a small towel embroidery device and embroidery machine that can work in multiple directions. The small towel embroidery device includes: a base plate, and a thread inlet is provided at the front end of the base plate; two thread hookers, which slide back and forth on the base plate to alternately hook the thread, and the thread hookers feed the hooked embroidery thread into the thread inlet to form a thread loop; a thread hooking drive assembly, which drives the two thread hookers to alternately hook the thread; an opening mechanism, which includes a latch and a fastener, and the latch slides back and forth on the base plate to open or close the thread inlet. When the embroidery thread enters the thread inlet, the latch opens the thread inlet. After the embroidery thread enters the thread inlet to form a thread loop, the latch closes the thread inlet, and the fastener locks the latch when the latch closes the thread inlet.

[0007] Reference is also made to Chinese utility model patent with authorization publication number CN218666657U, which discloses a towel embroidery raising device and towel embroidery machine. The towel embroidery raising device includes a translation assembly comprising a needle plate with an X-direction needle extending in the X direction and a Y-direction needle extending in the Y direction; an X-direction drive mechanism for driving the needle plate in the X direction; and a Y-direction drive mechanism for driving the needle plate in the Y direction. After completing the raising operation in one direction, the X-direction drive mechanism and the Y-direction drive mechanism drive the needle plate to move in the corresponding direction, causing the needle in one direction to move into or out of the working area.

[0008] The above technical solution requires replacing the working needle for reversing, and can only perform reversal between the X direction and the Y direction. It is not a true 360-degree direction, which limits the freedom of plate making and cannot embroider more patterns. [Summary of the invention]

[0009] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a reversing mechanism of a multi-directional towel embroidery device and a towel embroidery machine, which can realize 360-degree directional embroidery.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] In one aspect, the present invention provides a reversing mechanism of a multi-directional towel embroidery device with a self-locking function, comprising:

[0012] A pendulum needle that moves back and forth linearly on opposite sides and changes its direction of movement after reversing;

[0013] A reversing fixed ring, wherein the reversing fixed ring is provided with a reversing self-locking ring surface;

[0014] The swing needle limiter is provided with two one-way self-locking parts that cooperate with the reversing self-locking ring surface for self-locking, and the self-locking directions of the two one-way self-locking parts are opposite. The swing needle limiter has a fixed state and a reversing state. In the fixed state, the swing needle limiter is fixed relative to the reversing fixed ring. In the reversing state, the swing needle limiter rotates relative to the center of the reversing fixed ring to reversing. The swing needle limiter is provided with a limiting groove, and limiting ends are provided on opposite sides of the limiting groove.

[0015] The pendulum needle driver is provided with a pendulum needle driving part and a reversing unlocking part. When the pendulum needle limiter is in a fixed state, the pendulum needle driving part moves along the limit groove between the limit ends on both sides, and drives the pendulum needle to swing back and forth within a set range; when the pendulum needle limiter is converted from a fixed state to a reversing state, the reversing unlocking part drives one of the one-way self-locking parts to unlock the reversing self-locking ring surface; when reversing, the pendulum needle driving part acts with one of the limit ends of the limit groove, driving the pendulum needle limiter to rotate for reversing.

[0016] Preferably, the reversing fixed ring is an internal tooth ratchet, the reversing self-locking ring surface is the inner gear ring of the internal tooth ratchet, and the one-way self-locking component is a ratchet that cooperates with the inner gear ring.

[0017] Preferably, the pendulum drive member includes a pendulum drive pin, and the pendulum drive pin vertically passes through the limiting slot and moves along the limiting slot.

[0018] Preferably, the swing needle is connected to a swing needle guide block, and the swing needle limiting member is provided with a swing needle guide groove that cooperates with the swing needle guide block, and the swing needle guide block moves back and forth linearly along the swing needle guide groove.

[0019] Preferably, the limiting groove crosses and penetrates the swing needle guide groove, and the swing needle driving pin passes through the swing needle guide groove and is connected to the swing needle guide block.

[0020] Preferably, both ends of the swing needle guide groove are through-through, and the reversing unlocking member is integrally arranged with the swing needle guide block. The swing needle guide block is provided with two unlocking driving surfaces corresponding to the opposite sides of the moving direction that act on the one-way self-locking component. The unlocking driving surface passes through the through-hole at the end of the swing needle guide groove and acts on the one-way self-locking component.

[0021] Preferably, the pendulum needle driving member further includes a rotating component, and an eccentric portion of the rotating component is connected to the pendulum needle driving pin.

[0022] Preferably, the reversing mechanism is further provided with a guide sleeve, the pendulum needle limiting member rotates along the guide sleeve, and the rotating component rotates concentrically with the pendulum needle limiting member along the guide sleeve.

[0023] Preferably, the rotating component is provided with a driving groove at a position deviating from the center, and the upper end of the swing needle driving pin is arranged in the driving groove.

[0024] On the other hand, the present invention provides a towel embroidery machine with a multi-directional towel embroidery device, and the multi-directional towel embroidery device is provided with the reversing mechanism.

[0025] The technical solution adopted by the present invention has the following beneficial effects:

[0026] The embroidery needle moves up and down on the embroidery work to embroider. During this process, the pendulum needle is driven by the pendulum needle driver to move back and forth on the opposite sides of the embroidery needle to form a thread loop. This repeated operation will form multiple thread loops on the pendulum needle. Since the embroidery frame runs along the thread-off direction of the pendulum needle, the previously formed thread loop will be removed from the pendulum needle, leaving an upright thread loop on the embroidery work.

[0027] The pendulum needle changes its moving direction after reversing, and the pendulum needle limiter rotates during reversing. When the pendulum needle limiter switches from a fixed state to a reversing state, the reversing unlocking member drives one of the one-way self-locking members to unlock the reversing self-locking ring surface. Then the pendulum needle limiter can enter the reversing state, and the pendulum needle driving member continues to move along the limit groove and acts on one of the limit ends of the limit groove. At this time, the pendulum needle limiter can be driven to rotate relative to the center of the reversing fixed ring for reversing. After the reversing is completed, the reversing unlocking member retracts, and the one-way self-locking member is re-locked with the reversing self-locking ring surface.

[0028] Since a self-locking structure is provided between the swing needle limiter and the reversing fixed ring, the swing needle limiter is self-locking after reversing and is in a fixed state. The swing needle limiter can remain relatively fixed, ensuring stable movement of the swing needle after reversing.

[0029] Since the swing needle limiter is provided with two one-way self-locking components that cooperate with the reversing self-locking ring surface for self-locking, it has a self-locking function while realizing the bidirectional rotation of the swing needle limiter, and the swing needle limiter can be rotated 180 degrees in both directions, thereby realizing reversal of any working position of 360 degrees.

[0030] In this way, it can rotate 360 ​​degrees to any working position, achieving 360-degree work without dead angles and reducing unnecessary embroidery stitches. Therefore, it improves the work efficiency of the product, reduces the difficulty of plate making, saves embroidery thread and auxiliary materials, increases the beauty of the pattern, and increases customer benefits.

[0031] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0032] The invention will be further described below with reference to the accompanying drawings:

[0033] Figure 1 This is a schematic structural diagram of the multi-directional towel embroidery device of the present invention;

[0034] Figure 2 A schematic diagram of the partial structure of an embroidery machine using the multi-directional towel embroidery device of the present invention;

[0035] Figure 3 It is a side view of the multi-directional towel embroidery device of the present invention;

[0036] Figure 4It is a partially exploded perspective schematic diagram of the multi-directional towel embroidery device of the present invention;

[0037] Figure 5 It is a partially exploded side view of the multi-directional towel embroidery device of the present invention;

[0038] Figure 6 for Figure 5 The enlarged structural diagram at position I in the middle;

[0039] Figure 7 It is a three-dimensional schematic diagram of the cooperation between the swing needle driver and the swing needle limiter;

[0040] Figure 8 Schematic diagram of the coordination between the swing needle driving pin, the swing needle guide block and the swing needle;

[0041] Figure 9 This is a top view of the multi-directional towel embroidery device of the present invention;

[0042] Figure 10 for Figure 9 Middle CC section view;

[0043] Figure 11 for Figure 10 The enlarged structural diagram at position I in the middle;

[0044] Figure 12 A schematic diagram of the relative direction of the pendulum needle;

[0045] Figure 13 Schematic diagram of the relative direction of the pendulum needle;

[0046] Figure 14 The three diagrams are the relative directions of the pendulum needles;

[0047] Figure 15 Four schematic diagrams of the relative directions of the pendulum needles;

[0048] Reference numerals:

[0049] Needle plate 100, needle hole 101, machine head 200, embroidery needle 201, crossbeam 300; reversing mechanism 1, looping head assembly 11, looping head fixed seat 111, looping head lower fixed seat 1111, looping head upper fixed seat 1112, guide sleeve 112, bearing 1121, bearing 2 1122, reversing fixed ring 113, reversing self-locking ring surface 1131, swing needle limiter 114, swing needle guide groove 1141, limit groove 1142, one-way self-locking component 1143, torsion spring 1144, synchronous belt drive assembly 115, first synchronous pulley 1151, eccentric protrusion 115 11, drive groove 11512, second synchronous pulley 1152, synchronous belt 1153, swing needle drive pin 116, swing needle guide block 1161, swing needle 117, fixing part 1171, bevel gear 2 118, presser foot 119, presser foot spring 1191, special-shaped gasket 1192; drive assembly 12, drive motor 121, bevel gear 1 122, motor fixing bracket 123, retractable bracket 13; retractable mechanism 2, retractable cylinder 21, translation guide rail 22, guide rail seat 23, guide bearing 231, guide seat 24, curved guide rail groove 241, vertical guide rail 25, mounting bracket 3. [Specific implementation method]

[0050] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0051] It will be understood by those skilled in the art that, unless there is any conflict, the features in the following embodiments and implementations may be combined with each other.

[0052] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. For example, terms such as "upper," "lower," "X-axis," and "Y-axis" used below to indicate orientation or positional relationships are based solely on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the disclosure. They do not indicate or imply that the device or component referred to must have a specific orientation or be constructed or operated in a specific orientation, and therefore should not be construed as limiting the disclosure.

[0053] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0055] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0056] To address the shortcomings of most towel embroidery devices on the market, which only operate in one direction, the present invention designs a multidirectional towel embroidery device capable of 360-degree operation. This multidirectional towel embroidery device is mounted on the embroidery machine head 200 (i.e., the head housing) and works with the embroidery needle 201 on the needle bar frame to embroider towels. When the head color changes, the needle bar frame moves laterally relative to the head housing, moving the embroidery needle 201 of the corresponding color to the position corresponding to the multidirectional towel embroidery device. For single-head embroidery machines, a single head is sufficient. For multi-head embroidery machines, several heads are mounted side by side on the machine frame, specifically on the crossbar 300 of the frame. Furthermore, an embroidery frame and needle plate 100 are located below the crossbar. The embroidery frame can move horizontally in the X and Y directions. The needle plate 100 is equipped with a needle hole 101 for the embroidery needle 201. During embroidery, the needle 201 passes through the needle hole 101 and interacts with the fabric on the embroidery frame, performing the embroidery.

[0057] like Figures 1 to 15 As shown, the multi-directional towel embroidery device includes a mounting bracket 3 and a retracting mechanism 2 and a reversing mechanism 1 mounted on the mounting bracket 3 .

[0058] The reversing mechanism 1 includes a looping head assembly 11 and a driving assembly 12. The looping head assembly 11 includes a looping head fixing seat 111 and a swing needle 117 provided on the looping head fixing seat 111, a reversing fixing ring 113, a swing needle limiter 114 and a swing needle driver.

[0059] The swing needle 117 moves back and forth linearly on opposite sides of the embroidery needle 201, and changes its moving direction after reversing. The reversing fixed ring 113 is provided with a reversing self-locking ring surface 1131. The swing needle limiter 114 is provided with two one-way self-locking components 1143 that cooperate with the reversing self-locking ring surface 1131 for self-locking, and the self-locking directions of the two one-way self-locking components 1143 are opposite. The swing needle limiter 114 has a fixed state and a reversing state. In the fixed state, the swing needle limiter 114 is fixed relative to the reversing fixed ring 113. In the reversing state, the swing needle limiter 114 rotates relative to the center of the reversing fixed ring 113 to reverse. In this way, after one of the one-way self-locking components 1143 is unlocked, the swing needle limiter 114 can rotate in the unlocked direction, and the other one-way self-locking component 1143 will not hinder the rotation of the swing needle limiter 114.

[0060] The swing needle driver is provided with a swing needle driving member and a reversing unlocking member, and the driving assembly 12 is used to drive the swing needle driver. The swing needle limiter 114 is provided with a limiting groove 1142, and the limiting groove 1142 is provided with limiting ends on opposite sides. Since the length of the limiting groove 1142 corresponds to the swing amplitude of the swing needle during normal towel embroidery, or is slightly larger than the swing amplitude of the swing needle, when the swing needle limiter 114 is in a fixed state and towel embroidery is performed normally, the swing needle driver moves along the limiting groove between the limiting ends on both sides and drives the swing needle to swing back and forth within a set range without interacting with the limiting ends on opposite sides of the limiting groove 1142. Since the above-mentioned self-locking structure is provided between the swing needle limiter 114 and the reversing fixed ring 113, the swing needle limiter 114 can remain relatively fixed after reversing, ensuring that the swing needle 117 moves stably after reversing. When the oscillating needle stopper switches from a fixed state to a reversing state, the reversing unlocking member drives one of the one-way self-locking components to unlock the reversing self-locking ring surface. After unlocking, the oscillating needle driving member continues to move to reverse direction. During reversal, the oscillating needle driving member interacts with one of the limiting ends of the limiting groove, driving the oscillating needle stopper to rotate relative to the center of the reversing fixed ring to reverse direction.

[0061] Furthermore, the swing needle drive member includes a swing needle drive pin 116 and a rotating member. The swing needle drive pin 116 vertically passes through the limit slot 1142 and moves along the limit slot. The rotating member is used to drive the swing needle drive pin 116 to swing back and forth along the limit slot 1142, and to drive the swing needle limit member 114 to rotate during reversal. In other words, the rotation of the rotating member is converted into the reciprocating linear swing of the swing needle drive pin 116.

[0062] In this embodiment, the reversing fixed ring 113 is an internal tooth ratchet, the reversing self-locking ring surface 1131 is the inner gear ring of the internal tooth ratchet, and the one-way self-locking component 1143 is a ratchet that cooperates with the inner gear ring. The ratchet is rotatably connected to the pendulum needle limiter, and a torsion spring 1144 is provided between the ratchet and the pendulum needle limiter. Under the action of the torsion spring 1144, the ratchet rotates unidirectionally and engages with the inner gear ring. When unlocking, the ratchet overcomes the action of the torsion spring and rotates in the opposite direction to achieve unlocking. In the above technical solution, the two one-way ratchets cooperate with the internal tooth ratchet to realize the bidirectional rotation of the pendulum needle limiter 114 while having a self-locking function, and the pendulum needle limiter can rotate 180 degrees in both directions, thereby realizing reversal of any working position of 360 degrees.

[0063] Furthermore, a guide sleeve 112 is provided on the looping head fixed seat 111, along which the swing needle stopper 114 rotates. The rotating component rotates concentrically with the swing needle stopper 114 along the guide sleeve 112. The rotating component is provided with a drive slot 11512 at an off-center position, within which the upper end of the swing needle drive pin 116 is disposed. A bearing 1121 is provided between the guide sleeve 112 and the looping head fixed seat 111. To ensure smooth rotation of the rotating component, a bearing 2122 is provided between the rotating component and the guide sleeve 112.

[0064] The pendulum pin 117 is connected to a pendulum pin guide block 1161. The pendulum pin drive pin 116 vertically passes through the limit slot 1142 and is connected to the pendulum pin guide block. The pendulum pin limiter 114 is provided with a pendulum pin guide slot 1141 that cooperates with the pendulum pin guide block 1161. The pendulum pin guide block 1161 reciprocates linearly along the pendulum pin guide slot 1141. In this way, through the cooperation between the drive slot 11512 and the pendulum pin drive pin 116, and the guidance of the pendulum pin guide slot 1141 on the pendulum pin guide block 1161, the rotational motion of the rotating component can be converted into the reciprocating linear swing of the pendulum pin 117.

[0065] Specifically, the cross section of the pendulum guide block 1161 includes upper and lower parallel straight sides and left and right curved sides connecting the two straight sides. The shape of the pendulum guide groove 1141 corresponds to the cross section of the pendulum guide block 1161.

[0066] In order to realize that the pendulum needle driving pin 116 passes through the pendulum needle guide groove and is connected to the pendulum needle guide block, the limiting groove 1142 crosses and penetrates the pendulum needle guide groove 1141. The pendulum needle limiting member 14 is provided with a radial protrusion, and the pendulum needle guide groove 1141 penetrates the opposite sides of the radial protrusion. The pendulum needle guide block 1161 is provided with two unlocking drive surfaces corresponding to the opposite sides of the moving direction that act on the one-way self-locking component. The unlocking drive surfaces pass through the through-opening of the pendulum needle guide groove and act on the one-way self-locking component. It can be understood that before the pendulum needle driving pin 116 acts on the limiting ends on the opposite sides of the limiting groove 1142, the unlocking drive surfaces have already passed through the through-opening of the pendulum needle guide groove and acted on the one-way self-locking component. In this way, it can be ensured that the lock is unlocked first, and then the pendulum needle limiting member is driven to rotate for reversing.

[0067] Due to space limitations, it is not feasible to integrate a motor on the looping head fixed seat 111 to directly drive the rotating component. Based on this, in this embodiment, the looping head fixed seat 111 is provided with a synchronous belt transmission assembly 115, which includes a first synchronous pulley 1151, a second synchronous pulley 1152, and a synchronous belt 1153 connected to the first synchronous pulley and the second synchronous pulley for transmission. The rotating component is the first synchronous pulley 1151, and the drive groove 11512 is provided at the bottom of the first synchronous pulley. Specifically, the bottom of the first synchronous pulley 1151 is locally provided with an axially protruding eccentric protrusion 11511 in the circumferential direction away from the center position, and the drive groove 11512 is provided on the eccentric protrusion 11511. In this way, the drive assembly 12 can be provided on the outside of the looping head fixed seat 111 to drive the second synchronous pulley 1152. The use of a synchronous belt drive assembly for transmission not only provides smooth transmission but also high transmission accuracy. The direct use of the first synchronous pulley as the rotating component and the provision of a drive groove at its bottom have the advantages of a simplified structure and reduced number of parts. It is understood that the synchronous belt drive assembly 115 can also be replaced by a gear drive, a rack and pinion drive, or the like.

[0068] Specifically, such as Figure 1 As shown, the drive assembly 12 includes a motor mounting bracket 123, a drive motor 121 and a bevel gear 122 mounted on the output shaft of the drive motor. The drive motor 121 is mounted on the motor mounting bracket 123. The second synchronous pulley 1152 is provided with a pulley shaft 2, on which a bevel gear 2 118 is mounted, and the bevel gear 122 is meshed with the bevel gear 2 118 for transmission. The pulley shaft 2 is rotatably supported on the looping head fixing seat 111 through a bearing 3. The bevel gear 2 118 and the pulley shaft 2 can be arranged as one piece, or can be arranged separately and fixed together. It is understandable that the bevel gear 1 and the bevel gear 2 can also be replaced by a similar vertical transmission pair such as a worm gear mechanism.

[0069] The reversing mechanism in this embodiment operates as follows: the drive motor 121 drives bevel gear 122 to rotate, which then meshes with bevel gear 2 118, which in turn drives the synchronous belt drive assembly 115, rotating the first synchronous pulley 1151. The drive groove 11512 on the first synchronous pulley engages with the swing needle drive pin 116. Because the swing needle guide block 1161 engages with the swing needle guide groove 1141 on the swing needle stopper, the swing needle drive pin 116 drives the swing needle 117 to move back and forth linearly on opposite sides of the embroidery needle.

[0070] like Figure 11 、 Figure 12 、 Figure 13 and Figure 15 As shown, the swing needle 117 moves back and forth along the X direction on the opposite sides of the embroidery needle 201, as shown in FIG. Figure 14 As shown, the swing needle 117 moves back and forth in the Y direction on opposite sides of the embroidery needle 201. Of course, this embodiment can work in any direction of 360 degrees, and is not limited to moving back and forth in the X / Y direction. It can also move back and forth in any direction that has an angle with the X / Y direction.

[0071] When working in a certain direction of 360 degrees, due to the design of the rotation angle of the driving motor 121, the pendulum needle guide block 1161 moves in the space between the two one-way self-locking components 1143, and the pendulum needle limiter 114 is fixed, so the pendulum needle swings back and forth in a fixed direction under the embroidery needle to form a towel thread loop. As the embroidery machine frame moves, the thread loop will detach from one end of the pendulum needle, leaving towel thread loops on the fabric.

[0072] When the embroidery plate design requires the pendulum needle 117 to work in other directions of the embroidery frame, the driving motor 121 only needs to increase the swing amplitude in a certain rotation direction and open one of the two one-way self-locking components 1143. The entire pendulum needle mechanism (the pendulum needle and the pendulum needle guide block, pendulum needle drive pin, and pendulum needle limiter connected to the pendulum needle) can rotate freely to the required direction to work, thereby completing the required design pattern.

[0073] Specifically, the looping head fixed seat 111 includes a looping head upper fixed seat 1112 and a looping head lower fixed seat 1111. The looping head fixed seat 1112 is provided with an upper opening, and the guide sleeve 112 penetrates into the looping head fixed seat from the upper opening. The looping head lower fixed seat 1111 is provided with a lower opening, and the swing pin 117 passes through the lower opening. The rear portion of the swing pin is provided with a fixed portion 1171, which is a rectangular structure, parallel to the main body of the swing pin front portion and higher than the swing pin front portion. A vertical connecting portion is provided in the middle of the swing pin, which vertically passes through the lower opening, is connected to the fixed portion at the upper end, and is connected to the front end at the lower end. The bottom surface of the swing pin guide block 1161 is provided with a fixing groove, and the fixing portion is partially located in the fixing groove and can be fixed with screws. The screws can also pass upward through the swing pin guide block and are fixed to the swing pin drive pin 116 above by screws. In addition, a limiting annular surface is provided on the periphery of the lower opening, which is used to form a limit with the lower end of the guide sleeve. A bearing positioning step is provided on the outer side of the upper opening, and bearing one is installed on the bearing positioning step. A limiting flange is provided on the upper end of the guide sleeve, which cooperates with the end face of bearing one to limit the position.

[0074] In addition, a presser foot 1191 and a presser foot spring 1191 are provided in the guide sleeve 112. The center of the presser foot is hollow, so the embroidery needle can pass through the loop head fixing seat 111, that is, the guide sleeve 112 and the presser foot 1191, and cooperate with the swing needle 117 below.

[0075] like Figures 1 to 3 As shown, the retracting mechanism 2 is used to send the reversing mechanism 1 to the working area or return it to the standby area. When towel embroidery is required, the retracting mechanism 2 sends the reversing mechanism 1 to the working area. When normal flat embroidery is performed, the retracting mechanism 2 returns the reversing mechanism 1 to the standby area.

[0076] Specifically, the retractable mechanism 2 is provided with a translation guide rail 22 for guiding the reversing mechanism's forward and backward movement, a lifting guide rail for guiding the reversing mechanism's upward and downward movement, and a retractable actuator for driving the reversing mechanism's movement. The lifting guide rail comprises a vertical guide rail 25, a curved guide rail seat 24, a curved guide rail groove 241 disposed on the curved guide rail seat 24, and a guide seat 23. The translation guide rail 22 and the curved guide rail seat 24 are fixed to the mounting bracket 3. The reversing mechanism 1 is provided with a retractable bracket 13, which comprises a translation bracket and a lifting bracket. The translation bracket slides with the translation guide rail, the vertical guide rail is disposed on the translation bracket, and the lifting bracket is connected to the guide seat and slides with the vertical guide rail. The guide seat is provided with a guide portion that engages with the curved guide rail groove. The curved guide rail groove comprises a horizontal section and a curved climbing section connected to the horizontal section. The guide seat 23 is provided with a guide shaft, on which a guide bearing 231 is provided that engages with the curved guide rail groove.

[0077] The retracting and extending drive is a retracting and extending cylinder 21. When the retracting and extending drive drives the reversing mechanism to move forward and backward along the translation guide rail, the vertical guide rail is driven to move synchronously, and the guide bearing slides along the curved guide rail groove. In the horizontal section, the retracting and extending mechanism moves horizontally backward, and then guided by the curved climbing section, the guide seat drives the lifting bracket to move up and down along the vertical guide rail. When the multi-directional towel embroidery device needs to work, Figure 2 and Figure 3 As shown, the device is sent to the working area through the retractable mechanism to work with the embroidery machine needle. After the work is completed, the device is retracted to the back of the needle bar frame to make room for changing fabrics.

[0078] Due to the provision of translation guide rails, vertical guide rails and curved guide rails, when the retracting and releasing cylinder drive device moves forward and backward, it will be guided along the wave crest design of the curved guide rail, moving out of the translation and lifting bands, thereby avoiding space limitations, so that the device can work under any needle bar (after the retracting mechanism 2 returns the reversing mechanism 1 to the standby area, the machine head can change color), thereby achieving the purpose of multi-color operation.

[0079] 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 will understand that the invention includes, but is not limited to, the drawings and the contents described in the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the invention are intended to be included within the scope of the claims.

Claims

1. The reversing mechanism of the multi-directional towel embroidery device with self-locking function is characterized in that: include: A looping head fixing seat, wherein the looping head fixing seat is provided with a guide sleeve; A pendulum needle that moves back and forth linearly on opposite sides and changes its direction of movement after reversing; A reversing fixed ring, wherein the reversing fixed ring is provided with a reversing self-locking ring surface; The swing needle limiter is provided on the guide sleeve and rotates with the guide sleeve as the central axis. The swing needle limiter is provided with two one-way self-locking parts that cooperate with the reversing self-locking ring surface for self-locking, and the self-locking directions of the two one-way self-locking parts are opposite. The swing needle limiter has a fixed state and a reversing state. In the fixed state, the swing needle limiter is fixed relative to the reversing fixed ring. In the reversing state, the swing needle limiter rotates relative to the center of the reversing fixed ring to reversing. The swing needle limiter is provided with a limiting groove, and limiting ends are provided on opposite sides of the limiting groove; The pendulum needle driver is provided with a pendulum needle driving part and a reversing unlocking part. When the pendulum needle limiter is in a fixed state, the pendulum needle driving part moves between the limiting ends on both sides along the limiting groove and drives the pendulum needle to swing back and forth within a set range; when the pendulum needle limiter is converted from a fixed state to a reversing state, the reversing unlocking part drives one of the one-way self-locking parts to unlock the reversing self-locking ring surface; when reversing, the pendulum needle driving part acts with one of the limiting ends of the limiting groove to drive the pendulum needle limiter to rotate for reversing, the reversing fixed ring is an internal tooth ratchet, the reversing self-locking ring surface is the inner gear ring of the internal tooth ratchet, and the one-way self-locking part is a ratchet that cooperates with the inner gear ring.

2. The reversing mechanism of the multi-directional towel embroidery device with self-locking function according to claim 1 is characterized in that: The oscillating needle driving member includes an oscillating needle driving pin, which vertically passes through the limiting slot and moves along the limiting slot.

3. The reversing mechanism of the multi-directional towel embroidery device with self-locking function according to claim 2 is characterized in that: The swing needle is connected to a swing needle guide block, and the swing needle limiting member is provided with a swing needle guide groove matched with the swing needle guide block, and the swing needle guide block moves back and forth linearly along the swing needle guide groove.

4. The reversing mechanism of the multi-directional towel embroidery device with self-locking function according to claim 3 is characterized in that: The limiting groove crosses and penetrates the swing needle guide groove, and the swing needle driving pin passes through the swing needle guide groove and is connected with the swing needle guide block.

5. The reversing mechanism of the multi-directional towel embroidery device with self-locking function according to claim 4 is characterized in that: The two ends of the swing needle guide groove are through-through, and the reversing unlocking member is integrally arranged with the swing needle guide block. The swing needle guide block is provided with two unlocking driving surfaces corresponding to the opposite sides of the moving direction, which act on the one-way self-locking component. The unlocking driving surface passes through the through-hole at the end of the swing needle guide groove and acts on the one-way self-locking component.

6. The reversing mechanism of the multi-directional towel embroidery device with self-locking function according to claim 2, characterized in that: The pendulum needle driving member further includes a rotating component, and an eccentric portion of the rotating component is connected to the pendulum needle driving pin.

7. The reversing mechanism of the multi-directional towel embroidery device with self-locking function according to claim 6, characterized in that: A bearing 1 is provided between the guide sleeve and the looping head fixing seat, and the rotating component rotates concentrically along the guide sleeve and the swing needle limiting member.

8. The reversing mechanism of the multi-directional towel embroidery device with self-locking function according to claim 7, characterized in that: The rotating component is provided with a driving groove at a position deviating from the center, and the upper end of the swing needle driving pin is arranged in the driving groove.

9. A towel embroidery machine with a multi-directional towel embroidery device, characterized in that: The multi-directional towel embroidery device is provided with the reversing mechanism according to any one of claims 1 to 8.

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