A braider containing a drag reducing reversing dial structure and a lubrication method thereof

Abstract

The application relates to the technical field of braiding machines, in particular to a braiding machine containing a drag-reducing reversing dial structure and a lubricating method thereof. An arc-shaped gap of the reversing dial mechanism is internally provided with an embedded oil outlet cavity, an embedded steel ball and a compression spring. The reversing dial mechanism is internally provided with an internal flow channel connected with the oil outlet cavity. An oil distribution plate is fixedly arranged at the inner side of the arc-shaped gap of the reversing dial mechanism, an oil distribution cavity is embedded along the arc-shaped direction, one end of the oil distribution cavity is communicated with the oil outlet cavity, and a plurality of oil outlets are arranged on the concave surface of the oil distribution plate. The transmission mechanism comprises a transmission shaft and a straight-tooth cylindrical gear. The upper end of the transmission shaft is connected with the reversing dial mechanism through clamping, the transmission shaft penetrates through the reversing dial mechanism and the oil distribution cavity, the lower end of the transmission shaft is connected with an external oil pipeline, an annular groove is arranged on the periphery of the transmission shaft in the circumferential direction, a through hole is arranged in the annular groove, and the radial gap of the shaft hole is communicated with the internal flow channel. When the spindle and the reversing dial are reversely contacted, the oil injection system is triggered to work, thereby realizing the lubrication and drag reduction of the spindle and the dial.

Description

Technical Field

[0001] This invention relates to the field of braiding machine technology, and in particular to a braiding machine containing a drag-reducing reversing dial structure and its lubrication method. Background Technology

[0002] The working part of a spindle-type braiding machine is a fixed vertical table with intersecting, tangentially connected figure-eight shaped grooves. The spindles are housed in these grooves, divided into two equal parts that intersect each other evenly and move in opposite directions at equal speeds. This cyclical motion continuously drives the spindles, weaving the yarn onto the surface of the cable to form a braided layer. The reversing dial, a key component of the braiding machine, controls the direction of movement, enabling different braiding patterns. Because the spindles have a certain mass, frequent reversals cause impacts to the dial, resulting in significant stress. Simultaneously, sliding friction between the upper and lower surfaces of the dial and the spindle causes wear and noise, which can significantly reduce the lifespan of the braiding machine over time. Therefore, an efficient drag-reducing structure and lubrication system are needed to minimize friction and wear.

[0003] To address the aforementioned problems, the inventors proposed a braiding machine with a drag-reducing reversing dial structure and a lubrication method. This method optimizes the reversing structure and method of traditional braiding machines. To improve the smoothness of spindle reversing, the traditional non-contact reversing dials are changed to a cross-contact type. To reduce contact stress and frictional wear during reversing, the top, bottom, left, and right edge contours of the traditional reversing dial are optimized, and different transition curves are introduced to improve the sharp edges. To improve wear when the spindle contacts the dial and during reversing, a spring-loaded oil spray structure is added to the traditional reversing dial, activated each time a reversal occurs, forming a lubricating oil film between the spindle and the reversing dial. Compared to traditional braiding machines, this method can significantly eliminate impact stress, wear, and noise during frequent reversing, greatly extending the service life of the braiding machine. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art, and to propose a braiding machine with a drag-reducing reversing dial structure and its lubrication method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A braiding machine with a drag-reducing reversing dial structure includes a base frame, a cover plate, a reversing dial mechanism, a transmission mechanism, a spindle holder, a spindle, a column, a vertical drive motor, a tape output adjustment mechanism, and a speed regulating motor. The cover plate is located on the base frame, and a circular hole is opened in the center of the cover plate. Several transmission mechanisms are arranged around the circular hole, and each transmission mechanism is equipped with a reversing dial mechanism. The vertical drive motor is mounted on the cover plate and drives each transmission mechanism to rotate through gears. Each reversing dial mechanism has four arc-shaped notches with equal included angles on its edge for placing the spindle holder. The spindle is located on the spindle holder. In the rotating state, the arc-shaped notches of two adjacent reversing dial mechanisms form a joint to transfer the spindle holder, and the rotation directions of two adjacent reversing dial mechanisms are opposite. The column is mounted on the cover plate, and the speed regulating motor is mounted on the column. The speed regulating motor drives the tape output adjustment mechanism to gather the braided rope. The bottom of the reversing dial mechanism is an oil guide cavity that is connected and snapped with the transmission mechanism. The inner side of the arc-shaped notch of the reversing dial mechanism is provided with a built-in oil outlet cavity. The oil outlet cavity contains a steel ball and a compression spring. The reversing dial mechanism has an internal flow channel that connects to the oil outlet cavity. An oil distribution plate is fixedly installed inside the arc-shaped notch of the reversing dial mechanism. The oil distribution plate is an arc-shaped structure adapted to the arc-shaped notch, with an oil distribution cavity built in along the arc direction. One end of the oil distribution cavity is connected to the oil outlet cavity. Several oil outlets are opened on the concave surface of the oil distribution plate, and the oil distribution cavity is connected to each oil outlet. The oil distribution plate is also provided with a pin hole. The oil distribution plate at the pin hole is sealed in the oil outlet cavity. A baffle is provided inside the pin hole, which abuts against the steel ball and the pin hole. A pin is provided on the baffle that passes through the pin hole. When the steel ball pushes the baffle under the action of the compression spring, part of the pin is outside the pin hole, and the baffle is sealed in the oil distribution cavity. The transmission mechanism includes a drive shaft and a spur gear. The spur gear is fitted onto the drive shaft and meshes with a vertical drive motor. The upper end of the drive shaft is engaged with the oil guide cavity. The drive shaft passes through the reversing dial mechanism and the oil guide cavity. The drive shaft has a hollow shaft hole inside. The lower end of the drive shaft is connected to an external oil pipe. An annular groove is formed on the circumference of the drive shaft near the upper end. A through hole is formed in the annular groove area that connects to the shaft hole. A radial clearance is formed between the annular groove, the reversing dial mechanism, and the oil guide cavity. The radial clearance of the shaft hole is connected to the internal flow channel. The reversing dial mechanism is divided into an upper reversing dial and a lower reversing dial, which are arranged alternately. The upper reversing dial has an upper edge contour on its circumferential edge, and the lower reversing dial has a lower edge contour on its circumferential edge. The upper edge contour of the upper reversing dial and the lower edge contour of the lower reversing dial overlap each other.

[0006] As a further preferred embodiment, an upper oil seal and a lower oil seal are respectively provided at the upper and lower ends of the radial clearance of the shaft hole to seal the radial clearance of the shaft hole.

[0007] As a further preferred embodiment, a flange is provided at the lower part of the drive shaft, and a lower end face bearing is provided between the flange and the spur gear. The top of the drive shaft is an upper threaded part with a diameter smaller than that of the drive shaft. The upper threaded part has a fastening nut, and an upper end face bearing is provided between the fastening nut and the top of the drive shaft.

[0008] As a further preferred option, the shaft hole at the lower end of the drive shaft has an internal thread, and the drive shaft is connected to an external oil pipe through the internal thread.

[0009] A lubrication method comprising a drag-reducing commutator structure includes the following steps: Step 1: Lubricating oil is injected into the shaft hole of the drive shaft through the external oil pipe. The lubricating oil flows sequentially into the through hole, the radial clearance of the shaft hole, the internal flow channel, and the oil outlet chamber. Step 2: When the spindle seat changes direction in different reversing dial mechanisms, it enters the arc-shaped notch and compresses the push rod. The push rod pushes the steel ball through the baffle, and the movement of the steel ball compresses the compression spring. At this time, the baffle loses its blockage of the oil distribution chamber, and the oil in the oil outlet chamber flows into the oil distribution chamber of the oil distribution plate, and then flows out from each oil outlet to lubricate the spindle seat. Step 3: After the spindle seat changes direction and leaves the arc-shaped notch, the compression push rod is no longer squeezed. Then the compression spring resets and moves the steel ball to make the compression push rod return to its initial position. The baffle re-seals the oil distribution chamber, the flow channel is closed, the oil no longer enters the oil distribution chamber, and the oil outlets of the oil distribution plate no longer discharge oil. Beneficial effects

[0010] 1. The two adjacent reversing dials adopt an upper and lower cross contact type, which can provide effective support for the spindle when switching between the two dials, thereby reducing spindle sway, vibration noise and wear.

[0011] 2. The upper and lower edge contours of the reversing dial are hyperbolic. A calculation method for the upper and lower edge contours of the reversing dial is given. Compared with the original right-angled contour dial, this invention can effectively reduce the impact and collision phenomena caused by the spindle shaking when switching between dials, and effectively reduce vibration noise and impact wear.

[0012] 3. The profile of the spindle bayonet edge of the reversing dial is a quadratic Bézier curve. A calculation method for the profile of the spindle bayonet edge of the reversing dial is given, which can effectively reduce the impact and noise in the power transmission process.

[0013] 4. The reversing system is equipped with a spring-loaded oil injection structure. When the spindle and the reversing dial make reversing contact, the oil injection system is triggered to work and maintain a high-pressure oil film between the contact surfaces of the spindle and the dial. This achieves floating support for the spindle by the dial, reduces frictional resistance, and effectively extends the service life of the spindle and the dial. Attached Figure Description

[0014] Figure 1 This is a general structural diagram of the present invention; Figure 2 This is a schematic diagram of the contact method between adjacent reversing dials; Figure 3 (a) is a structural diagram of the upper reversing dial mechanism of the present invention; Figure 3 (b) is an exploded view of the upper reversing dial mechanism of the present invention; Figure 3 (c) is a partial cross-sectional view of the spring lubrication mechanism of the present invention; Figure 4 (a) is an exploded structural diagram of the transmission mechanism of the present invention; Figure 4 (b) is a full sectional view of the transmission mechanism of the present invention; Figure 5 (a) is a structural diagram of the oil separator plate of the present invention; Figure 5 (b) is a full sectional view of the oil separator plate of the present invention; Figure 6 Draw a schematic diagram of the hyperbola profile; Figure 7 Draw a schematic diagram of the Bézier curve profile; Figure 8 This is a schematic diagram showing the installation angles of the upper and lower reversing dials. Figure 9 This is a schematic diagram of the internal flow channel structure; Among them, 1-base frame, 2-cover plate, 3-upper reversing dial, 301-oil guide cavity, 302-radial sealing screw, 303-axial sealing screw, 304-oil distribution plate, 305-compression push rod, 306-steel ball, 307-compression spring, 308-fastening screw, 4-transmission mechanism, 401-transmission shaft, 402-lower end face bearing, 403-lower oil seal, 404-spur gear, 405-upper oil seal, 406-upper end face bearing, 407-fastening nut, 408-internal thread, 409-shaft hole, 4010-through hole, 4011-shaft hole radial clearance, 4012-internal flow channel, 5-lower reversing dial, 6-spindle seat, 7-spindle, 8-column, 9-vertical drive motor, 10-belt adjustment mechanism, 11-speed regulating motor. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0016] A braiding machine with a drag-reducing reversing dial structure and a lubrication method are disclosed, specifically including a base frame 1, a cover plate 2, an upper reversing dial 3, a transmission mechanism 4, a lower reversing dial 5, a spindle holder 6, a spindle 7, a column 8, a vertical drive motor 9, a tape output adjustment mechanism 10, and a speed regulating motor 11.

[0017] Both the base frame 1 and the cover plate 2 have threaded holes and are connected by screws. The cover plate 2 has a central circular hole for conveying the rope from the bottom upwards for yarn weaving. Eight shaft holes are formed around this circular hole for installing the upper reversing dial 3 and the lower reversing dial 5. The upper reversing dial 3 and the lower reversing dial 5 have four equally spaced circular notches for accommodating the spindle holder 6. When rotating, the circular notch of the upper reversing dial 3 matches the circular notch of the adjacent lower reversing dial 5, and their rotation directions are opposite. The installation method is as follows: Figure 2 As shown, the upper and lower parts make interlocking contact, alternating sequentially. Both the spindle base 6 and the spindle 7 have threaded holes and are connected by screws. The vertical drive motor 9 is bolted to a pre-drilled mounting hole on the cover plate 2 and drives the transmission mechanism 4 via a series of gears. The transmission mechanism 4 drives the upper reversing dial 3 and the lower reversing dial 5 through shaft-hole engagement to reverse the direction of the spindle base 6, causing the spindle base 6 to move periodically along the track on the cover plate 2. The column 8 is bolted to a pre-drilled mounting hole on the floor 2, and the speed-regulating motor 11 is bolted to the column 8. The speed-regulating motor 11 drives the belt adjustment mechanism 10 via chain drive to tighten the woven rope.

[0018] The reversing dial mechanism (upper reversing dial 3 or lower reversing dial 5) consists of an oil guide chamber 301, a radial sealing screw 302, an axial sealing screw 303, an oil distribution plate 304, a compression rod 305, a steel ball 306, a compression spring 307, and a fastening screw 308. Because the internal flow channel is difficult to machine during the manufacturing of the reversing dial mechanism, holes can only be drilled from the edge inwards. The radial sealing screw 302 and the axial sealing screw 303 are used to seal and maintain the internal pressure. The compression rod 305 includes a pin and a baffle.

[0019] Radial sealing screws 302 and axial sealing screws 303 are connected to the threaded holes of the oil guide cavity 301 by screw connection to achieve sealing of the internal flow channel 4012. The oil distribution plate 304 is as follows... Figure 5 As shown in (a), the oil distribution plate 304 has threaded holes on both sides, which are screwed together with the oil guide cavity 301 by fastening screws 308. The surface of the oil distribution plate 304 has an array of circular holes to divert the oil flow, which then flows out to lubricate the spindle seat 6. The installation method of the compression rod 305, steel ball 306, and compression spring 307 is as follows: Figure 3As shown in (c), when the spindle seat 6 reverses direction, the compression rod 305 is compressed. That is, when the spindle seat 6 reverses direction at different reversing dial mechanisms, it enters the arc-shaped notch, compressing the pin. The pin pushes the steel ball 306 through the baffle, and the movement of the steel ball 306 compresses the compression spring 307, opening the flow channel and allowing oil to flow from the internal flow channel into the oil distribution plate 304. After the spindle seat 6 reverses direction, the compression rod 305 is no longer compressed, meaning the pin is no longer compressed. Consequently, the compression spring 307 resets, moving the steel ball 306 to return the pin to its initial position. The baffle re-seals the oil distribution chamber, closing the flow channel, preventing oil from entering the oil distribution chamber, and oil no longer exits from the various oil outlets of the oil distribution plate 304.

[0020] Transmission mechanism 4, for example Figure 4 (a) and Figure 4 As shown in (b), the system comprises a drive shaft 401, a lower end face bearing 402, a lower oil seal 403, a spur gear 404, an upper oil seal 405, an upper end face bearing 406, and a fastening nut 407. The lower end face bearing 402 is mounted on a disc on the drive shaft 401. The spur gear 404 engages with the drive shaft 401 via a shaft hole, driving the upper reversing dial 3 to rotate. The lower oil seal 403 and upper oil seal 405 engage with the drive shaft 401 via a shaft hole, sealing the oil within the radial clearance 4011 of the shaft hole. The internal thread 408 of the drive shaft 401 connects to the oil pipeline of an external pump station, supplying oil to the entire transmission system. The oil flows through the shaft hole 409 to the through hole 4010 for diversion, then flows into the radial clearance 4011 of the shaft hole, and further into the internal flow channel 4012, thus supplying oil to the spring lubrication mechanism.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A braiding machine with a drag-reducing reversing dial structure, comprising a base frame (1), a cover plate (2), a reversing dial mechanism, a transmission mechanism (4), a spindle seat (6), a spindle (7), a column (8), a vertical drive motor (9), a tape output adjustment mechanism (10), and a speed regulating motor (11); the cover plate (2) is located on the base frame (1), and a circular hole is opened in the center of the cover plate (2). Several transmission mechanisms (4) are arranged around the circular hole, and each transmission mechanism (4) is provided with a reversing dial mechanism. The vertical drive motor (9) is mounted on the cover plate (2). The gear drives each transmission mechanism (4) to rotate; each reversing dial mechanism has four arc-shaped notches at equal included angles on its edge for placing the spindle seat (6), the spindle (7) is located on the spindle seat (6), in the rotating state, the arc-shaped notches of two adjacent reversing dial mechanisms form a joint to transfer the spindle seat (6), and the rotation directions of the two adjacent reversing dial mechanisms are opposite; the column (8) is installed on the cover plate (2), the speed regulating motor (11) is installed on the column (8), the speed regulating motor (11) drives the belt adjustment mechanism (10) to gather the woven rope; Its features are: The bottom of the reversing dial mechanism is an oil guide cavity (301) that is connected and snapped with the transmission mechanism (4). The inner side of the arc-shaped notch of the reversing dial mechanism is provided with a built-in oil outlet cavity. The oil outlet cavity contains a steel ball (306) and a compression spring (307). The reversing dial mechanism has an internal flow channel (4012) that connects to the oil outlet cavity. An oil distribution plate (304) is fixedly provided inside the arc-shaped notch of the reversing dial mechanism. The oil distribution plate (304) is an arc-shaped structure adapted to the arc-shaped notch. An oil distribution cavity is built in the arc direction. One end of the oil distribution cavity is connected to the oil outlet cavity. Several oil outlets are opened on the concave surface of the oil distribution plate (304). The oil distribution cavity is connected to each oil outlet. The oil distribution plate (304) is also provided with a pin hole. The oil distribution plate (304) at the pin hole is blocked in the oil outlet cavity. A baffle is provided inside the pin hole, which abuts against the steel ball (306) and the pin hole. A pin is provided on the baffle that passes through the pin hole. When the steel ball (306) is pushed by the compression spring (307) to push the baffle, part of the pin is outside the pin hole, and the baffle is blocked in the oil distribution cavity. The transmission mechanism (4) includes a transmission shaft (401) and a spur gear (404). The spur gear (404) is sleeved on the transmission shaft (401) and meshes with the vertical drive motor (9). The upper end of the transmission shaft (401) is engaged with the oil guide cavity (301). The transmission shaft (401) passes through the reversing dial mechanism and the oil guide cavity (301). The transmission shaft (401) has a hollow shaft hole (409) inside. The lower end of the transmission shaft (401) is connected to an external oil pipe. The outer periphery of the transmission shaft (401) near the upper end is provided with an annular groove. The annular groove area is provided with a through hole (4010) that connects to the shaft hole (409). The annular groove forms a radial clearance (4011) between the reversing dial mechanism and the oil guide cavity (301). The radial clearance (4011) of the shaft hole is connected to the internal flow channel (4012). The reversing dial mechanism is divided into an upper reversing dial (3) and a lower reversing dial (5). The upper reversing dial (3) and the lower reversing dial (5) are arranged alternately. The upper reversing dial (3) has an upper edge contour on its circumferential edge, and the lower reversing dial (5) has a lower edge contour on its circumferential edge. The upper edge contour of the upper reversing dial (3) and the lower edge contour of the lower reversing dial (5) overlap with each other.

2. A braiding machine with a drag-reducing reversing dial structure according to claim 1, characterized in that: The upper end and lower end of the radial clearance (4011) of the shaft hole are respectively provided with an upper oil seal (405) and a lower oil seal (403) to seal the radial clearance (4011) of the shaft hole.

3. A braiding machine with a drag-reducing reversing dial structure according to claim 1, characterized in that: The transmission shaft (401) has a flange at its lower part, and a lower end face bearing (402) is provided between the flange and the spur gear (404). The top of the transmission shaft (401) has an upper threaded part with a diameter smaller than that of the transmission shaft (401). The upper threaded part has a fastening nut (407), and an upper end face bearing (406) is provided between the fastening nut (407) and the top of the transmission shaft (401).

4. A braiding machine with a drag-reducing reversing dial structure according to claim 1, characterized in that: The shaft hole (409) at the lower end of the drive shaft (401) has an internal thread (408) inside, and the drive shaft (401) is connected to the external oil pipe through the internal thread (408).

5. A lubrication method comprising a drag-reducing commutator structure according to claim 1, characterized in that, Includes the following steps: Step 1: Lubricating oil is injected into the shaft hole (409) of the drive shaft (401) through the external oil pipe. The lubricating oil flows into the through hole (4010), the radial clearance of the shaft hole (4011), the internal flow channel (4012), and the oil outlet chamber in sequence. Step 2: When the spindle seat (6) changes direction in different reversing dial mechanisms, it enters the arc-shaped notch and squeezes the pin. The pin pushes the steel ball (306) through the baffle. Then the movement of the steel ball (306) compresses the compression spring (307). At this time, the baffle loses its blockage of the oil distribution chamber. The oil in the oil outlet chamber flows into the oil distribution chamber of the oil distribution plate (304) and then flows out from each oil outlet to lubricate the spindle seat (6). Step 3: After the spindle seat (6) changes direction and leaves the arc-shaped notch, the pin is no longer squeezed, and then the compression spring (307) resets the moving steel ball (306) to make the pin return to the initial position. The baffle re-seals the oil distribution chamber, the flow channel is closed, the oil no longer enters the oil distribution chamber, and the oil outlets of the oil distribution plate (304) no longer discharge oil.

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