A dustproof belt drive mechanism

Abstract

This utility model discloses a heald belt drive mechanism with dustproof function, including a dustproof box, a planetary gear assembly, and a connector. The planetary gear assembly includes a gear ring and planetary gears meshing within the gear ring. The dustproof box has sliding holes. One end of the connector is rotatably connected to the planetary gears, and the other end passes through the sliding hole and connects to the heald belt. The planetary gears rotate, causing the connector to slide along the sliding hole, thereby driving the heald belt to reciprocate up and down. This utility model converts rotation into up and down movement through the planetary gear assembly, thereby driving the heald belt to move up and down. Furthermore, because the planetary gear assembly is small in size, the planetary gears and gear ring can be entirely housed within the dustproof box. This allows the dustproof box to not only guide and limit the connector through the sliding hole but also to protect the planetary gear assembly from dust, preventing dust and other particles from affecting the stable meshing of the planetary gears and gear ring. This ensures that the planetary gears can drive the heald belt to move up and down stably through the connector, reducing noise during transmission.

Description

Technical Field

[0001] This utility model belongs to the field of circular looms, specifically relating to a heald belt drive mechanism with dustproof function. Background Technology

[0002] Currently, circular looms are industrial equipment used for weaving tube fabric. Tube fabric is woven by crossing warp and weft threads. The warp threads are threaded through the holes of the heddles. The up-and-down reciprocating motion of the heddles drives the heddles and the warp threads threaded through the heddles to move up and down. The weft threads pass through the up-and-down reciprocating warp threads to weave tube fabric.

[0003] Currently, circular looms typically use a planar cam to drive the end of a swing arm to swing up and down, which in turn causes the heald belt connected to the end of the swing arm to reciprocate up and down. However, the swing arm extends a considerable length from the planar cam at the center of the circular loom to the heald belt on the outer periphery of the loom. This makes the swing arm prone to dust accumulation, and the end that drives the heald belt to move up and down has poor stability. When large particles such as dust fall, they can easily cause the end of the swing arm to vibrate, affecting the swing arm's drive on the heald belt, and the vibration further increases the noise of the circular loom. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a heddle belt drive mechanism with dustproof function, so as to solve the problem that dust and other particles falling into the heddle belt drive mechanism affect its driving of the heddle belt to move up and down.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a heald belt drive mechanism with dustproof function, including a dustproof box, a planetary gear assembly and a connecting member disposed within the dustproof box, the planetary gear assembly including a gear ring fixed within the dustproof box and planetary gears meshing within the gear ring, the dustproof box having a sliding hole extending radially along the gear ring on the side facing the heald belt, one end of the connecting member being rotatably connected to the central shaft of the planetary gears, and the other end passing through the sliding hole and connected to the heald belt, the planetary gears driving the connecting member to slide along the sliding hole by rotation, thereby driving the heald belt to reciprocate up and down. This technical solution has the following technical effects:

[0006] This invention sets the driving mechanism for the up-and-down movement of the heald belt as a planetary gear assembly and a connecting member located inside a dustproof box. A sliding hole is provided on the dustproof box, allowing the circular loom to drive the planetary gear to rotate within the gear ring. The planetary gear then drives the connecting member, which is rotatably connected to it, to rotate around the central axis of the planetary gear and displace it. This causes the end of the connecting member connected to the heald belt to slide up and down within the sliding hole, converting rotation into up-and-down movement, thus driving the heald belt to move up and down. Simultaneously, because the planetary gear assembly is small, both the planetary gear and the gear ring can be housed entirely within the dustproof box. This allows the dustproof box to not only guide and limit the connecting member through the sliding hole but also to protect the planetary gear assembly from dust. When the planetary gear assembly is working, the dustproof box prevents a large amount of dust and other particles from falling into the assembly, thus preventing these particles from affecting the stable meshing of the planetary gear and gear ring, ensuring stable rotation of the planetary gear within the gear ring, and ensuring that the planetary gear can drive the heald belt to move stably up and down through the connecting member, reducing noise during transmission.

[0007] In the aforementioned dustproof belt drive mechanism, the dustproof box includes a rear cover and a front cover with sliding holes. The front cover closes onto the rear cover on the side facing the heald belt, forming a dustproof cavity between them for accommodating the planetary gear assembly. By configuring the dustproof box as a separate structure with the rear and front covers separate, and with the front cover closing onto the rear cover on the side facing the heald belt, when a malfunction occurs inside the dustproof box installed on the circular loom, only the front cover needs to be removed from the rear cover for inspection and repair. This eliminates the need to completely remove the dustproof box from the circular loom, thus improving dustproof performance while reducing maintenance difficulty.

[0008] In the aforementioned dustproof belt drive mechanism, the rear cover includes a back plate and side plates surrounding the back plate, with the side plates integrally formed on the outer periphery of the gear ring. The integral formation of the gear ring and side plates eliminates the need for positioning and installation between the gear ring and the dustproof box during assembly, reducing assembly steps and improving assembly efficiency.

[0009] In the aforementioned dustproof belt drive mechanism, the gear ring includes a ring body and meshing teeth located inside the ring body. The front cover is locked to the ring body by a locking screw. The locking screw passes through the front cover and extends into the ring body to lock with the ring body, thereby pressing the front cover onto the rear cover and achieving locking between the front and rear covers. The gear ring serves both as a structure meshing with the planetary gears and as a fixing position for the locking screw. This eliminates the need to thicken the side plate of the rear cover to accommodate screw holes or to install screw posts inside the rear cover, thus achieving locking between the front and rear covers. This simplifies the structure of the rear cover and reduces manufacturing difficulty.

[0010] In the aforementioned dustproof belt drive mechanism, the front cover includes a panel with sliding holes and a surrounding edge that abuts against the end face of the side panel. By abutting the end face of the front cover's surrounding edge against the end face of the rear cover's side panel, the sealing of the dustproof cavity is enhanced, preventing the formation of gaps between the front cover's surrounding edge and the rear cover's side panel that allow dust to accumulate, resulting in a better dustproof effect.

[0011] In the aforementioned dustproof belt drive mechanism, an annular limiting step, coaxially arranged with the gear ring, is provided on the inner wall of the rear cover. The annular limiting step is located on the side of the gear ring away from the front cover, and its inner diameter is smaller than that of the gear ring. When the planetary gears mesh with the gear ring, because the inner diameter of the annular limiting step is smaller than that of the gear ring, its radial extension is greater than that of the gear ring. The annular limiting step can abut against the end face of the planetary gear to provide axial support and limit its movement, preventing the planetary gears from shifting axially towards the rear cover and disengaging from the gear ring. This ensures stable meshing between the planetary gears and the gear ring, thereby guaranteeing stable transmission between the planetary gears and the belt.

[0012] In the aforementioned dustproof belt drive mechanism, the planetary gear includes an integrally formed gear body and a central shaft. A separation gap is provided between the annular limiting step and the gear ring, and the width of the separation gap is smaller than the thickness of the gear body. By providing a separation gap between the annular limiting step and the gear ring, the planetary gear and the limiting step do not contact each other when the planetary gear does not shift axially or the shift is small. This avoids long-term wear between the rotating planetary gear and the annular limiting step, thereby reducing wear between the planetary gear and the rear cover. Furthermore, because the width of the separation gap between the annular limiting step and the gear ring is smaller than the thickness of the gear body, even if the planetary gear shifts axially towards the rear cover, the end face of the gear body has already abutted against the annular limiting step before the gear body of the planetary gear completely disengages from the gear ring, preventing the planetary gear from shifting further and ensuring stable meshing between the planetary gear and the gear ring.

[0013] In the aforementioned dustproof belt drive mechanism, the planetary gear assembly further includes an input shaft. The dustproof housing has mounting holes, through which the input shaft extends into the dustproof housing to drive the planetary gears to rotate within the gear ring. The input shaft and the mounting holes are rotatably connected by bearings. By installing bearings within the mounting holes of the dustproof housing, the dustproof housing can provide radial support to the input shaft, ensuring coaxiality between the mounting holes and the input shaft. This guarantees stable output rotation of the input shaft to the planetary gears, while simultaneously preventing mutual wear between the input shaft and the dustproof housing, thus extending the service life of both.

[0014] In the aforementioned dustproof belt drive mechanism, a stop rib is provided on the inner wall of the mounting hole. The inner ring of the bearing is fitted onto the input shaft, and the outer ring of the bearing is embedded in the mounting hole. The end face of the outer ring of the bearing facing the planetary gear abuts against the stop rib. When the bearing is installed with the dustproof box, the bearing is inserted into the mounting hole through the side of the mounting hole away from the heald until the end face of the bearing facing the planetary gear abuts against the stop rib. When the dustproof box is installed on the circular loom, the plate that locks to the dustproof box abuts against the other end face of the bearing's outer ring, preventing the bearing from freely disengaging from the mounting hole.

[0015] In the aforementioned dustproof belt drive mechanism, a transmission rod is fixed to the end of the input shaft. The transmission rod is rotatably connected to the central shaft of the planetary gears. The input shaft drives the planetary gears to rotate within the gear ring via the transmission rod. The input shaft and the planetary gears are connected and transmitted through the transmission rod, which reduces wear and ensures stable and reliable transmission. Alternatively, a sun gear is fixed to the end of the input shaft. The sun gear meshes with the planetary gears to drive them to rotate within the gear ring. The sun gear meshes with the planetary gears to drive them, ensuring stable and reliable transmission.

[0016] The features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0018] Figure 1 This is a perspective view of a belt drive mechanism with dustproof function according to the present invention;

[0019] Figure 2 This is an exploded view of a belt drive mechanism with dustproof function according to this utility model;

[0020] Figure 3 This is a cross-sectional view of a dustproof belt drive mechanism according to the present invention.

[0021] Figure 4 This is a schematic diagram of the inside of the dustproof box;

[0022] Figure 5 This is an assembly diagram of the input shaft, drive rod, planetary gears, and connecting parts;

[0023] Figure 6 This is a side view of the back cover;

[0024] Figure 7 This is a 3D view of the back cover;

[0025] Figure 8 A cross-sectional view of the rear cover and planetary gear assembly.

[0026] Figure label:

[0027] 100. Dustproof box; 110. Dustproof chamber;

[0028] 200. Rear cover; 210. Back plate; 211. Mounting hole; 212. Stop rib; 220. Side plate; 230. Annular limiting step; 240. Bearing; 250. Separation gap;

[0029] 300. Front cover; 310. Panel; 311. Sliding hole; 320. Edge surround; 330. Locking screw;

[0030] 400. Planetary gear assembly; 410. Gear ring; 411. Ring body; 412. Meshing teeth; 420. Planetary gear; 421. Gear body; 422. Central shaft; 430. Input shaft; 440. Transmission rod;

[0031] 500. Connectors;

[0032] 600, Integrated belt;

[0033] 700, plate body. Detailed Implementation

[0034] This utility model proposes a heald belt drive mechanism with dustproof function, including a dustproof box, a planetary gear assembly and a connector disposed in the dustproof box. The planetary gear assembly includes a gear ring fixed in the dustproof box and planetary gears meshing in the gear ring. The dustproof box has a sliding hole extending radially along the gear ring on the side facing the heald belt. One end of the connector is rotatably connected to the central shaft of the planetary gear, and the other end passes through the sliding hole and is connected to the heald belt. The planetary gear drives the connector to slide along the sliding hole by rotating, thereby driving the heald belt to reciprocate up and down. This invention sets the driving mechanism for the up-and-down movement of the heald belt as a planetary gear assembly and a connecting member located inside a dustproof box. A sliding hole is provided on the dustproof box, allowing the circular loom to drive the planetary gear to rotate within the gear ring. The planetary gear then drives the connecting member, which is rotatably connected to it, to rotate around the central axis of the planetary gear and displace it. This causes the end of the connecting member connected to the heald belt to slide up and down within the sliding hole, converting rotation into up-and-down movement, thus driving the heald belt to move up and down. Simultaneously, because the planetary gear assembly is small, both the planetary gear and the gear ring can be housed entirely within the dustproof box. This allows the dustproof box to not only guide and limit the connecting member through the sliding hole but also to protect the planetary gear assembly from dust. When the planetary gear assembly is working, the dustproof box prevents a large amount of dust and other particles from falling into the assembly, thus preventing these particles from affecting the stable meshing of the planetary gear and gear ring, ensuring stable rotation of the planetary gear within the gear ring, and ensuring that the planetary gear can drive the heald belt to move stably up and down through the connecting member, reducing noise during transmission.

[0035] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model 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 utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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 utility model according to the specific circumstances.

[0039] 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.

[0040] Example 1:

[0041] A dustproof belt drive mechanism, such as Figures 1 to 8 As shown, the device includes a planetary gear assembly 400 and a connector 500, as well as a dustproof box 100. The dustproof box 100 has a dustproof cavity 110 inside to accommodate the planetary gear assembly 400 and the connector 500. The planetary gear assembly 400 includes a gear ring 410 and planetary gears 420. The gear ring 410 is fixed inside the dustproof box 100, and the planetary gears 420 are disposed inside the gear ring 410. The outer periphery of the planetary gears 420 meshes with the gear ring 410. The dustproof box 100 is correspondingly arranged with the heald belt 600. The side of the dustproof box 100 facing the heald belt 600 has a sliding hole 311. The sliding hole 311 is provided through the dustproof box 100 so that the interior of the dustproof box 100 is connected to the outside through the sliding hole 311. The sliding hole 311 is strip-shaped and extends up and down along the radial direction of the gear ring 410. One end of the connecting piece 500 is rotatably connected to the central shaft 422 of the planetary gear 420, and the other end passes through the sliding hole 311 and is connected to the heddle belt 600. When the planetary gear 420 rotates inside the gear ring 410, as the planetary gear 420 meshes with the gear ring 410 at different positions, the planetary gear 420 rotates on its own axis and revolves around the central shaft 422 of the gear ring 410. This, in turn, drives the connecting rod rotatably connected to the planetary gear 420 to rotate around the central shaft 422 of the planetary gear 420 and simultaneously undergo displacement in both the horizontal and vertical directions. Because the sliding hole 311... 11 extends vertically, so the sliding hole 311 can guide and limit the end of the connector 500 connected to the heald 600, so that the connector 500 can only slide up and down in the sliding hole 311 to transmit the vertical displacement to the heald 600, thereby driving the heald 600 to move up and down. The up and down movement of the heald 600 can drive the heald wires set on the heald 600 to move up and down at the same time, thereby realizing the up and down movement of the warp wires threaded on the heald wires, and the weft wires pass through the up and down moving warp wires to weave the tubular fabric.

[0042] This invention configures the driving mechanism for the vertical movement of the heald belt 600 as a planetary gear assembly 400 and a connecting member 500 located within a dustproof box 100. A sliding hole 311 is provided on the dustproof box 100. This allows the circular loom to drive the planetary gear 420 to rotate within the gear ring 410, which in turn drives the connecting member 500, which is rotatably connected to it, to rotate around the central axis 422 of the planetary gear 420 and undergo displacement. This causes the end of the connecting member 500 connected to the heald belt 600 to slide vertically within the sliding hole 311, converting rotation into vertical movement to drive the heald belt 600 to move vertically. Furthermore, because the planetary gear assembly 400 is relatively small, the planetary gears... The wheel 420 and the gear ring 410 can both be housed within the dust box 100. This allows the dust box 100 to not only guide and limit the connector 500 via the sliding hole 311, but also to provide dust protection for the planetary gear assembly 400. When the planetary gear assembly 400 is in operation, the dust box 100 can prevent a large amount of dust and other particles from falling into the planetary gear assembly 400, thereby preventing dust and other particles from affecting the stable meshing of the planetary gear 420 and the gear ring 410. This ensures the stable rotation of the planetary gear 420 within the gear ring 410, and thus ensures that the planetary gear 420 can drive the heddle belt 600 to move stably up and down via the connector 500, reducing noise during the transmission process.

[0043] like Figure 2 As shown, the dust box 100 includes a rear cover 200 and a front cover 300. The front cover 300 covers the rear cover 200 on the side facing the heald belt 600 and locks it in place. A sliding hole 311 is provided on the front cover 300 for the connector 500 to pass through. A dustproof cavity 110 is formed between the front cover 300 and the rear cover 200. The planetary gear 420 and the gear ring 410 are disposed in the dustproof cavity 110. By configuring the dust box 100 as a separate structure with the rear cover 200 and the front cover 300, and covering the rear cover 200 on the side facing the heald belt 600, when a malfunction occurs inside the dust box 100 installed on the circular loom, only the front cover 300 needs to be removed from the rear cover 200. This allows for internal inspection of the dust box 100 without having to remove the entire dust box 100 from the circular loom, thus improving dustproof performance while reducing the difficulty of maintenance.

[0044] like Figure 3As shown, the rear cover 200 includes a back plate 210 and a side plate 220. The side plate 220 is vertically wrapped around the outer periphery of the back plate 210 so that the back plate 210 and the side plate 220 together form a rear cavity with an opening facing the front cover 300. Preferably, the toothed ring 410 is disposed on the inner ring of the side plate 220 and is integrally formed with the side plate 220, so that when assembling the dust box 100, there is no need to position and install the toothed ring 410 and the dust box 100, reducing assembly steps and improving assembly efficiency. The front cover 300 includes a panel 310 and a surrounding edge 320. A sliding hole 311 is provided on the panel 310, and the surrounding edge 320 vertically surrounds the outer periphery of the panel 310, so that the panel 310 and the surrounding edge 320 together form a front cavity with an opening facing the rear cover 200. The surrounding edge 320 abuts against the end face of the side plate 220 facing the front cover 300 to seal between them, so that the front cavity and the rear cavity together form a dustproof cavity 110. By abutting the end face of the surrounding edge 320 of the front cover 300 against the end face of the side plate 220 of the rear cover 200, the sealing performance of the dustproof cavity 110 is enhanced, and gaps for dust accumulation are avoided between the surrounding edge 320 of the front cover 300 and the side plate 220 of the rear cover 200, resulting in a better dustproof effect.

[0045] In this embodiment, as Figure 4 As shown, the gear ring 410 includes a ring body 411 and meshing teeth 412. The outer periphery of the ring body 411 is integrally formed on the inner side wall of the side plate 220. The meshing teeth 412 are located on the inner side of the ring body 411 for meshing with the planetary gear 420. The front cover 300 has a locking screw 330 on its panel 310. The locking screw 330 passes through the panel 310 and extends into the ring body 411 to lock with the ring body 411, thereby pressing the front cover 300 onto the rear cover 200 and achieving locking between the front cover 300 and the rear cover 200. The gear ring 410 serves as both a structure for meshing with the planetary gear 420 and a fixing position for the locking screw 330. It eliminates the need to thicken the side plate 220 of the rear cover 200 to provide screw holes, and also eliminates the need to provide screw posts inside the rear cover 200, thus achieving locking between the front cover 300 and the rear cover 200 and simplifying the structure of the rear cover 200.

[0046] like Figure 3 As shown, an annular limiting step 230 is provided on the inner wall of the side plate 220. The annular limiting step 230 is coaxially arranged with the gear ring 410. The annular limiting step 230 is located on the side of the gear ring 410 away from the front cover 300, as shown. Figure 6As shown, the inner diameter L1 of the annular limiting step 230 is smaller than the inner diameter L2 of the gear ring 410, so that the inner ring of the annular limiting step 230 protrudes radially from the inner ring of the gear ring 410. When the planetary gear 420 meshes with the gear ring 410, because the inner diameter of the annular limiting step 230 is smaller than the inner diameter of the gear ring 410, the radial extension length of the annular limiting step 230 will be greater than the radial extension length of the gear ring 410. The annular limiting step 230 can abut against the end face of the planetary gear 420 to provide axial support and limit the planetary gear 420, preventing the planetary gear 420 from shifting axially towards the rear cover 200 and disengaging from the gear ring 410, ensuring stable meshing between the planetary gear 420 and the gear ring 410, and thus ensuring stable transmission between the planetary gear 420 and the heddle belt 600.

[0047] The planetary gear 420 includes a gear body 421 and a central shaft 422. The outer periphery of the gear body 421 is used for meshing with the gear ring 410. The central shaft 422 passes through the center of the gear body 421 and is integrally formed with the gear body 421. The thickness of the gear body 421 is the same as the thickness of the gear ring 410. Preferably, as shown... Figure 8 As shown, a separation gap 250 is provided between the annular limiting step 230 and the gear ring 410. The width of the separation gap 250 is defined as H1, and the thickness of the wheel body 421 is defined as H2, satisfying H1 < H2, that is, the width of the separation gap 250 between the annular limiting step 230 and the gear ring 410 is less than the thickness of the wheel body 421. By setting a separation gap 250 between the annular limiting step 230 and the gear ring 410, the planetary gear 420 and the limiting step do not contact each other when the planetary gear 420 does not shift axially or the shift is small. This avoids long-term wear between the rotating planetary gear 420 and the annular limiting step 230, thereby reducing wear between the planetary gear 420 and the rear cover 200. Furthermore, because the width of the separation gap 250 between the annular limiting step 230 and the gear ring 410 is smaller than the thickness of the gear body 421, even if the planetary gear 420 shifts axially towards the rear cover 200, the end face of the gear body 421 is already in contact with the annular limiting step 230 before the gear body 421 of the planetary gear 420 completely disengages from the gear ring 410, preventing the planetary gear 420 from shifting further and ensuring stable meshing between the planetary gear 420 and the gear ring 410.

[0048] In this embodiment, the planetary gear assembly 400 further includes an input shaft 430 for driving the planetary gear 420 to rotate. The input shaft 430 is coaxially arranged with the gear ring 410. The back plate 210 of the dustproof box 100 is provided with a mounting hole 211. A bearing 240 is embedded in the mounting hole 211. The end of the input shaft 430 passes through the bearing 240 and extends into the dustproof cavity 110 to drive the planetary gear 420 in the dustproof cavity 110 to rotate in the gear ring 410. The input shaft 430 and the mounting hole 211 are rotatably connected by the bearing 240. By installing a bearing 240 in the mounting hole 211 of the back plate 210, the rear cover 200 can provide radial support to the input shaft 430 through the bearing 240, ensuring the coaxiality between the mounting hole 211 and the input shaft 430, thereby ensuring that the input shaft 430 can stably output rotation to the planetary gear 420, while reducing the wear between the input shaft 430 and the dust box 100, and extending the service life of the input shaft 430 and the dust box 100.

[0049] To limit the bearing 240 within the mounting hole 211 and ensure stable support of the bearing 240 for the input shaft 430, such as... Figure 7 As shown, in this embodiment, a stop rib 212 is provided on the inner wall of the mounting hole 211. When the bearing 240 is installed, the bearing 240 is inserted into the mounting hole 211 through the side of the mounting hole 211 away from the front cover 300 until the end face of the outer ring of the bearing 240 facing the planetary gear 420 abuts against the stop rib 212. When the rear cover 200 is installed on the circular loom, the plate 700 locked with the rear cover 200 abuts against the other end face of the outer ring of the bearing 240 to prevent the bearing 240 from freely disengaging from the mounting hole 211. When the input shaft 430 is working, the inner ring of the bearing 240 is sleeved on the input shaft 430 and rotates together with the input shaft 430, while the outer ring of the bearing 240 abuts against the stop rib 212 to provide radial support for the input shaft 430.

[0050] like Figure 5 As shown, in this embodiment, a transmission rod 440 is provided at the end of the input shaft 430. One end of the transmission rod 440 is vertically fixed to the end of the input shaft 430, and the other end of the transmission rod 440 is rotatably connected to the central shaft 422 of the planetary gear 420, so that the input shaft 430 can drive the planetary gear 420 to rotate within the gear ring 410 through the transmission rod 440. When the input shaft 430 rotates around its axis, the transmission rod 440 fixed to the end of the input shaft 430 rotates together with the input shaft 430, thereby driving the planetary gear 420 rotatably connected to the end of the transmission rod 440 to rotate around the central shaft 422 of the gear ring 410. The input shaft 430 and the planetary gear 420 are connected and transmitted through the transmission rod 440, which is not prone to wear and provides stable and reliable transmission, thereby stabilizing the speed ratio of the planetary assembly at 0.5.

[0051] Example 2:

[0052] The difference between this embodiment and Embodiment 1 is that, in this embodiment, a sun gear is provided at the end of the input shaft. The sun gear is coaxially fixed at the end of the input shaft to drive the input shaft. The sun gear meshes with the planet gears. When the input shaft rotates, the sun gear rotates together with the input shaft, thereby driving the planet gears meshing with the sun gear to rotate around the input shaft in the gear ring. The sun gear drives the planet gears by meshing with the planet gears, and the transmission is stable and reliable.

[0053] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A belt drive mechanism with dustproof function, characterized in that, The device includes a dustproof box, a planetary gear assembly and a connector disposed within the dustproof box. The planetary gear assembly includes a gear ring fixed within the dustproof box and planetary gears meshing within the gear ring. The dustproof box has a sliding hole extending radially along the gear ring on the side facing the heald belt. One end of the connector is rotatably connected to the central shaft of the planetary gear, and the other end passes through the sliding hole and is connected to the heald belt. The planetary gear drives the connector to slide along the sliding hole by rotating, thereby driving the heald belt to reciprocate up and down.

2. The dustproof belt drive mechanism according to claim 1, characterized in that: The dust box includes a rear cover and a front cover with the sliding hole, the front cover covering the rear cover on the side facing the helical belt to form a dust chamber between them for accommodating the planetary gear assembly.

3. The dustproof belt drive mechanism according to claim 2, characterized in that: The rear cover includes a back plate and a side plate surrounding the back plate, the side plate being integrally formed on the outer periphery of the gear ring.

4. A dustproof belt drive mechanism according to claim 3, characterized in that: The toothed ring includes a ring body and meshing teeth located on the inner side of the ring body, and the front cover is locked onto the ring body by locking screws.

5. A dustproof belt drive mechanism according to claim 3, characterized in that: The front cover includes a panel with the sliding hole and a surrounding edge that abuts against the end face of the side panel.

6. A dustproof belt drive mechanism according to claim 2, characterized in that: The inner wall of the rear cover is provided with an annular limiting step coaxially arranged with the gear ring. The annular limiting step is located on the side of the gear ring away from the front cover, and the inner diameter of the annular limiting step is smaller than the inner diameter of the gear ring.

7. A dustproof belt drive mechanism according to claim 6, characterized in that: The planetary gear includes an integrally formed wheel body and a central shaft. A separation gap is provided between the annular limiting step and the gear ring, and the width of the separation gap is less than the thickness of the wheel body.

8. A dustproof belt drive mechanism according to claim 1, characterized in that: The planetary gear assembly also includes an input shaft. The dustproof box has a mounting hole. The input shaft passes through the mounting hole and extends into the dustproof box to drive the planetary gear to rotate in the gear ring. The input shaft and the mounting hole are rotatably connected by a bearing.

9. A dustproof belt drive mechanism according to claim 8, characterized in that: The inner wall of the mounting hole is provided with a stop rib. The inner ring of the bearing is sleeved on the input shaft, and the outer ring of the bearing is embedded in the mounting hole. The end face of the outer ring of the bearing facing the planetary gear abuts against the stop rib.

10. A dustproof belt drive mechanism according to claim 8, characterized in that: A transmission rod is fixed to the end of the input shaft, and the transmission rod is rotatably connected to the central axis of the planetary gears. The input shaft drives the planetary gears to rotate within the gear ring through the transmission rod. Alternatively, a sun gear is fixed to the end of the input shaft, and the sun gear drives the planetary gears to rotate within the gear ring by meshing with the planetary gears.

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