A disc belt embroidery device and disc belt embroidery machine

Abstract

This invention discloses a ribbon embroidery device and a ribbon embroidery machine. The ribbon embroidery device includes a ribbon embroidery machine housing, a main shaft passing laterally through the ribbon embroidery machine housing, and an M-axis assembly mounted on the ribbon embroidery machine housing. The M-axis assembly includes an M-axis rotatably supported on the ribbon embroidery machine housing, a ribbon needle bar and a needle bar sleeve movably passing through the M-axis. The needle bar sleeve is movably nested outside the needle bar and its lower end is connected to the presser foot. A presser foot driver guide shaft, a needle bar drive main shaft, and a needle bar drive secondary shaft are provided on the outside of the M-axis. A presser foot driver is mounted on the presser foot driver guide shaft and connected to the needle bar sleeve. A needle bar driver is mounted on the needle bar drive main shaft. A needle bar connecting block is movably connected to the needle bar drive secondary shaft and fixedly connected to the needle bar. The main shaft drives the needle bar driver. This invention places the components that would normally be located on the needle bar on the needle bar drive secondary shaft, avoiding the occupation of the axial space of the needle bar. This increases the vertical travel of the needle bar sleeve, thereby increasing the travel of the presser foot and meeting the need for increased presser foot travel.

Description

Technical Field

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

[0002] Currently, most ribbon embroidery machines on the market have a needle bar drive block mounted on the needle bar. A needle bar drive spindle is positioned side-by-side on the outside of the needle bar, and a needle bar driver is mounted on this spindle. The needle bar driver moves up and down along the spindle, causing the needle bar drive block and the needle bar to move up and down as well. Simultaneously, top and bottom dead points need to be set on the needle bar. The needle bar sleeve is driven by a presser foot driver to slide up and down along the needle bar, causing the presser foot to move up and down. Due to the limited axial space of the needle bar and the numerous components occupying a significant amount of axial space, the stroke of the needle bar sleeve is also limited, correspondingly limiting the presser foot's stroke to approximately 8mm. For thicker fabrics, adjusting the presser foot stroke is often impossible. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the technical problem to be solved by this invention is to provide a ribbon embroidery device and a ribbon embroidery machine, which solves the problem of limited pressure foot stroke in existing technologies.

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

[0005] First, a ribbon embroidery device is provided, including a ribbon embroidery machine housing, a main shaft passing laterally through the ribbon embroidery machine housing, and an M-axis assembly mounted on the ribbon embroidery machine housing. The M-axis assembly includes an M-axis rotatably supported on the ribbon embroidery machine housing, a ribbon needle bar and a needle bar sleeve movably passing through the M-axis. The needle bar sleeve is movably nested outside the needle bar and its lower end is connected to a presser foot. A presser foot driver guide shaft, a needle bar drive main shaft, and a needle bar drive secondary shaft are provided on the outside of the M-axis. A presser foot driver is mounted on the presser foot driver guide shaft and is connected to the needle bar sleeve. A needle bar driver is mounted on the needle bar drive main shaft. A needle bar connecting block is movably connected to the needle bar drive secondary shaft and is fixedly connected to the needle bar. The main shaft drives the needle bar driver, the needle bar driver drives the needle bar connecting block, and the needle bar connecting block drives the needle bar to move up and down.

[0006] Preferably, the presser foot driver is provided with a needle bar sleeve fork, the needle bar sleeve is provided with a fork groove, and the needle bar sleeve fork cooperates with the fork groove.

[0007] Preferably, a presser foot drive motor is installed on one side of the lateral side of the embroidery machine housing, and the presser foot drive motor drives the presser foot driver to move up and down along the presser foot driver guide shaft.

[0008] Preferably, a needle bar return spring is sleeved on the needle bar drive sub-shaft, and the needle bar return spring is located on the lower side of the needle bar connecting block to drive the needle bar upward to return to its original position.

[0009] Preferably, the needle bar drive sub-shaft is provided with an upper stop point and a lower stop point, the upper stop point abuts against the lower side of the needle bar connecting block, and the lower stop point abuts against the upper end of the needle bar return spring.

[0010] Preferably, the needle bar connecting block is provided with a U-shaped groove, the U-shaped groove is movably nested with the needle bar drive sub-shaft, the needle bar drive sub-shaft is movably nested with a needle bar sub-shaft sleeve on the upper side of the U-shaped groove and a bushing washer is movably nested on the lower side of the U-shaped groove, and the needle bar sub-shaft sleeve, bushing washer and needle bar connecting block are connected as one unit.

[0011] Preferably, the needle bar connecting block is provided with a clamping part, which is clamped and fixed to the needle bar.

[0012] Preferably, the presser foot driver guide shaft, M-axis, and needle bar drive sub-shaft are arranged side by side in the transverse direction, and the needle bar drive main shaft is located behind the needle bar drive sub-shaft.

[0013] Preferably, the spindle drives the needle bar driver via a cam link assembly.

[0014] Secondly, a ribbon embroidery machine is provided, wherein the ribbon embroidery machine is equipped with the aforementioned ribbon embroidery device.

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

[0016] The system is equipped with a needle bar drive main shaft and an additional needle bar drive sub-shaft on the outside of the M-axis. As a result, components that would normally be mounted on the needle bar can be mounted on the needle bar drive sub-shaft, thus avoiding the occupation of the needle bar's axial space. This also increases the stroke of the needle bar sleeve, thereby increasing the stroke of the presser foot and meeting the requirement to increase the presser foot stroke.

[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 structure of a multi-color disc embroidery device. Figure 1 ;

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

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

[0022] Figure 4 This is a schematic diagram of the structure of a multi-color disc embroidery device. Figure 4 ;

[0023] Reference numerals: M-axis assembly 100, M-axis 11, needle bar 12, needle bar sleeve 13, shift fork groove 131, M-axis drive mechanism 200, M-axis drive motor 21, motor bracket 211, bearing bracket 212, drive pulley 22, synchronous belt 23, driven pulley 24, main gear 25, M-axis gear 26, tension wheel 27, needle bar drive mechanism 300, needle bar drive secondary shaft 31, needle bar secondary shaft sleeve 311, shaft sleeve washer 312, upper dead point 313, lower dead point 314, needle bar return spring 315, needle bar drive main shaft 32, needle bar driver 33, needle bar connecting block 34, U-groove 341, clamp part 342, cam connecting rod assembly 35, presser foot drive mechanism 400, presser foot driver guide shaft 41, presser foot driver 42, presser foot drive motor 43, needle bar sleeve shift fork 44, embroidery machine housing 500, gear cover 501. Detailed Implementation

[0024] 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.

[0025] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0026] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "left," and "right" that 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Reference Figures 1 to 4 As shown, a multi-color ribbon embroidery device is provided, including a ribbon embroidery machine housing 500, a main shaft passing laterally through the ribbon embroidery machine housing 500, and an M-axis assembly 100 mounted on the ribbon embroidery machine housing. The M-axis assembly 100 includes an M-axis 11 rotatably supported on the ribbon embroidery machine housing 500, a ribbon needle bar 12 movably passing through the M-axis, and a needle bar sleeve 13. The needle bar sleeve 13 is movably nested outside the needle bar 12 and its lower end is connected to the presser foot. The ribbon embroidery device also includes a needle bar drive mechanism 300 and a presser foot drive mechanism 400 disposed on the ribbon embroidery machine housing 500. The needle bar drive mechanism 300 is used to drive the needle bar 12 to move up and down, and the presser foot drive mechanism 400 is used to drive the presser foot to move up and down.

[0031] In existing technology, a needle bar drive block is mounted on the needle bar, and a needle bar drive spindle is arranged side-by-side on the outside of the needle bar. A needle bar driver is mounted on the needle bar drive spindle, and the needle bar driver moves up and down along the needle bar drive spindle, thereby driving the needle bar drive block and the needle bar to move up and down. Simultaneously, a top dead center and a bottom dead center need to be set on the needle bar. The needle bar sleeve is driven by a presser foot driver to slide up and down along the needle bar, causing the presser foot to move up and down. Due to the limited axial space of the needle bar and the large number of components on the needle bar occupying a significant amount of axial space, the stroke of the needle bar sleeve is also limited, correspondingly limiting the stroke of the presser foot, typically to around 8mm. For some thicker fabrics, adjusting the presser foot stroke is often impossible.

[0032] To address the issue of limited presser foot stroke in existing technologies, this embodiment proposes to relocate some components on the needle bar to free up axial space. This increases the stroke of the needle bar sleeve, which in turn increases the stroke of the presser foot, allowing it to reach over 18mm, typically up to 20mm, thus satisfying the need to increase the presser foot stroke.

[0033] Specifically, the presser foot drive mechanism 400 includes a presser foot driver guide shaft 41 and a presser foot driver 42, and the needle bar drive mechanism 300 includes a needle bar drive main shaft 32, a needle bar drive secondary shaft 31, and a needle bar driver 33. The presser foot driver guide shaft 41, the needle bar drive main shaft 32, and the needle bar drive secondary shaft 31 are arranged on the outer side of the M-axis 11. The presser foot driver 42 is mounted on the presser foot driver guide shaft 41, and the presser foot driver 42 is connected to the needle bar sleeve 13. A needle bar driver 33 is mounted on the needle bar drive spindle 32, and a needle bar connecting block 34 is mounted on the needle bar drive sub-spindle 31. The needle bar connecting block 34 is movably connected to the needle bar drive sub-spindle 31 and fixedly connected to the needle bar 12. The spindle drives the needle bar driver 33, which moves up and down on the needle bar drive spindle 32 and drives the needle bar connecting block 34 to move up and down along the needle bar drive sub-spindle 31. The connection point between the presser foot driver 42 and the needle bar sleeve 13 is located on the lower side of the needle bar connecting block 34.

[0034] The technical solution of this embodiment retains the needle bar drive main shaft and adds a needle bar drive secondary shaft on the outside of the M axis. Therefore, the parts that originally needed to be set on the needle bar can be set on the needle bar drive secondary shaft, avoiding the occupation of the axial space of the needle bar. The stroke of the needle bar sleeve moving up and down can also be increased, thereby increasing the stroke of the presser foot and meeting the need to increase the presser foot stroke.

[0035] Specifically, the presser foot driver 42 is provided with a needle bar sleeve fork 44, and the needle bar sleeve 13 is provided with a fork groove 131. The needle bar sleeve fork 44 cooperates with the fork groove 131. The fork groove 131 is arranged circumferentially along the needle bar sleeve 13. The presser foot driver 42 drives the needle bar sleeve fork 44 to move up and down, and the needle bar sleeve fork 44 in turn drives the needle bar sleeve 13 to move up and down.

[0036] Furthermore, a presser foot drive motor 43 is installed on the left side of the lateral side of the embroidery machine housing. The presser foot drive motor 43 drives the presser foot driver 42 to move up and down along the presser foot driver guide shaft 41. Of course, necessary intermediate transmission components are provided between the presser foot drive motor and the presser foot driver to convert the rotary motion into linear motion. This is the same as the prior art and the structure in the prior art can be adopted, so it will not be described in detail here.

[0037] To achieve needle bar reset, a needle bar reset spring 315 is sleeved on the needle bar drive sub-shaft 31. The needle bar reset spring 315 is located below the needle bar connecting block 34, and drives the needle bar connecting block upward to achieve needle bar reset. Additionally, the components that would normally be mounted on the needle bar, namely the upper stop point 313 and the lower stop point 314, are mounted on the needle bar drive sub-shaft 31. The upper stop point 313 abuts against the lower side of the needle bar connecting block, and the lower stop point 314 abuts against the upper end of the needle bar reset spring. Thus, when the needle bar connecting block moves downward, it drives the upper stop point 313 and the lower stop point 314 downward, compressing the needle bar reset spring 315. When the needle bar driver releases its influence on the needle bar connecting block, under the action of the needle bar reset spring, the upper stop point 313, the lower stop point 314, and the needle bar connecting block 34 move upward synchronously until the needle bar connecting block is stopped by the upper limit wall of the embroidery machine housing.

[0038] Furthermore, the needle bar connecting block 34 is provided with a U-shaped groove 341, which is movably nested with the needle bar drive sub-shaft 31. The needle bar drive sub-shaft is movably nested with a needle bar sub-shaft sleeve 311 on the upper side of the U-shaped groove and a bushing washer 312 on the lower side of the U-shaped groove. The needle bar sub-shaft sleeve 311, bushing washer 312 and needle bar connecting block 34 are connected to form an integral unit and move up and down together.

[0039] Specifically, the needle bar connecting block 34 is provided with a clamping part 342, which is clamped and fixed to the needle bar 12. The presser foot driver guide shaft, M-axis, and needle bar drive sub-shaft are arranged side by side in the transverse direction, and the needle bar drive main shaft is located behind the needle bar drive sub-shaft. In this way, the presser foot driver guide shaft, M-axis, needle bar drive sub-shaft, and needle bar drive main shaft can be reasonably arranged within a limited space.

[0040] Referring to the prior art, the main shaft drives the needle bar driver 33 through the cam link assembly 35, wherein a cam is mounted on the main shaft and a link assembly is connected between the cam and the needle bar driver.

[0041] To drive the M-axis rotation, the ribbon embroidery device also includes an M-axis drive mechanism. In existing technology, the M-axis drive mechanism includes an M-axis drive motor, with a belt drive assembly between the motor and the M-axis. Specifically, a driven pulley is mounted on the M-axis, and a driving pulley is mounted on the motor shaft of the M-axis drive motor. The driving and driven pulleys are connected by a synchronous belt. Since the M-axis speed should not be too high, but the motor speed is relatively high, the driving pulley is set to be smaller, while the driven pulley is set to be larger, in order to achieve speed reduction. However, a ribbon reel is also located radially outside the driven pulley. Due to space constraints between adjacent ribbon embroidery heads, the outward expansion space of the ribbon reel is limited. If the driven pulley is set too large, the inward expansion space of the ribbon reel is also limited. This significantly restricts the diameter of the ribbon reel, increasing the frequency of reel replacement during ribbon embroidery, which is detrimental to efficiency.

[0042] To increase the diameter of the tape reel, the M-axis drive mechanism 200 is improved in this embodiment compared to the prior art. Specifically, the transmission assembly between the M-axis drive motor 21 and the M-axis 11 is improved by changing the position of the belt drive assembly and adding a gear reduction assembly. The gear reduction assembly includes an M-axis gear 26 mounted on the M-axis and a main gear 25 mounted on the intermediate shaft. The M-axis gear 26 is located on the lower side of the tape embroidery machine housing, and the intermediate shaft is located on the rear side of the M-axis. The M-axis gear 26 meshes with the main gear 25. A driven pulley 24 is also mounted on the intermediate shaft, and a synchronous belt 23 is provided between the M-axis drive motor 21 and the driven pulley 24.

[0043] Although the technical solution of this embodiment relatively lengthens the transmission chain, it also allows for a reduction in the diameter of the M-axis gear while still meeting the speed reduction requirements of the M-axis rotation. In this way, compared to setting a pulley on the M-axis, the diameter of the M-axis gear can be reduced, thus occupying less radial space and allowing for a larger pulley diameter.

[0044] It is understandable that since the diameter of the M-axis gear is larger than that of the main gear, the rotational speed can be reduced by meshing the M-axis gear with the main gear.

[0045] The M-axis drive motor 21 has a drive pulley 22 mounted on its motor shaft, which is connected to a synchronous belt 23. This allows the motor shaft to directly drive the drive pulley, reducing intermediate transmission links and improving efficiency.

[0046] Specifically, the driven pulley 24 is located above the main gear 25, and therefore can be located inside the tape embroidery machine housing. The M-axis drive motor 21 is mounted on the motor bracket 211. The M-axis drive motor 21 is vertically positioned, and its motor shaft extends vertically downwards and connects to the drive pulley 22. The M-axis drive motor 21 is located on the rear side of the tape embroidery machine housing 500, without occupying the inner space of the housing. The lower part of the motor shaft of the M-axis drive motor is rotatably supported by a bearing bracket 212 via a bearing. The bearing bracket 212 and the motor bracket 211 are fixed together, which reduces the sway of the motor shaft, reduces noise, and improves transmission accuracy. A pulley bracket 241 is provided above the driven pulley 24, and the pulley bracket 241 is equipped with a clamp to hold and fix the intermediate shaft.

[0047] Furthermore, the synchronous belt 23 is also connected to a tensioning pulley 27. The tensioning pulley is used to tension the synchronous belt, thereby improving the transmission efficiency of the synchronous belt.

[0048] Preferably, both the M-axis gear 26 and the main gear 25 are helical gears. The tooth profile design of helical gears reduces energy loss and improves transmission efficiency during transmission; the meshing characteristics of helical gears make them run more smoothly, reducing vibration and noise, thereby improving the quality of the working environment; in addition, the tooth surface design of helical gears makes the load distribution more uniform, improving the load-bearing capacity of the gears.

[0049] Furthermore, such as Figure 1 As shown, a gear cover 501 is fixed to the lower side of the embroidery machine housing 500, which houses the M-axis gear 26. This prevents dust, thread ends, and other debris from entering the M-axis gear, causing it to jam, and extends the maintenance frequency and service life.

[0050] It is understood that this embodiment describes part of the structure of the multi-color disc embroidery device, and other structures can be referred to the prior art.

[0051] It is understood that the multi-color ribbon embroidery device in this embodiment is applied to the ribbon embroidery machine, specifically located on the head of the ribbon embroidery machine. Other structures of the ribbon embroidery machine can refer to the prior art.

[0052] 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 ribbon embroidery device, comprising a ribbon embroidery machine housing, a main shaft transversely passing through the ribbon embroidery machine housing, and an M-axis assembly mounted on the ribbon embroidery machine housing, wherein the M-axis assembly includes an M-axis rotatably supported on the ribbon embroidery machine housing, a ribbon needle bar movably passing through the M-axis, and a needle bar sleeve, wherein the needle bar sleeve is movably nested outside the needle bar and its lower end is connected to a presser foot, characterized in that, The outer side of the M-axis is provided with a presser foot driver guide shaft, a needle bar drive main shaft, and a needle bar drive secondary shaft. A presser foot driver is mounted on the presser foot driver guide shaft and is connected to the needle bar sleeve. A needle bar driver is mounted on the needle bar drive main shaft. A needle bar connecting block is movably connected to the needle bar drive secondary shaft and is fixedly connected to the needle bar. The main shaft drives the needle bar driver, the needle bar driver drives the needle bar connecting block, and the needle bar connecting block drives the needle bar to move up and down. A presser foot drive motor is mounted on the horizontal side of the tape embroidery machine housing. The presser foot drive motor drives the presser foot driver to move up and down along the presser foot driver guide shaft. A needle bar return spring is sleeved on the needle bar drive secondary shaft and is located below the needle bar connecting block to drive the needle bar to return to its original position. The needle bar drive secondary shaft has an upper stop point and a lower stop point. The upper stop point abuts against the lower side of the needle bar connecting block, and the lower stop point abuts against the upper end of the needle bar return spring.

2. The ribbon embroidery device according to claim 1, characterized in that, The presser foot driver is provided with a needle bar sleeve fork, and the needle bar sleeve is provided with a fork groove, and the needle bar sleeve fork cooperates with the fork groove.

3. The ribbon embroidery device according to claim 1, characterized in that, The needle bar connecting block is provided with a U-shaped groove, which is movably nested with the needle bar drive sub-shaft. The needle bar drive sub-shaft is movably nested with a needle bar sub-shaft sleeve on the upper side of the U-shaped groove and a bushing washer is movably nested on the lower side of the U-shaped groove. The needle bar sub-shaft sleeve, bushing washer and needle bar connecting block are connected as one unit.

4. The ribbon embroidery device according to claim 1, characterized in that, The needle bar connecting block is provided with a clamping part, which is tightly fixed to the needle bar.

5. The ribbon embroidery device according to claim 1, characterized in that, The presser foot driver guide shaft, M-axis, and needle bar drive sub-shaft are arranged side by side in the transverse direction, and the needle bar drive main shaft is located behind the needle bar drive sub-shaft.

6. The ribbon embroidery device according to claim 1, characterized in that, The main shaft drives the needle bar driver via a cam link assembly.

7. A tape embroidery machine, characterized in that, The ribbon embroidery machine is equipped with the ribbon embroidery device as described in any one of claims 1 to 6.

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