Power device of permanent magnet motor direct drive jacquard

Abstract

A power device of a permanent magnet motor direct drive jacquard machine belongs to the technical field of jacquard machines. It comprises a pair of bottom frame beams; a cam box is fixed between the opposite sides of the pair of bottom frame beams, the left side of the cam box is fixed with the middle part of the right side of the jacquard wall plate, and the right side constitutes the cam box opening; the jacquard power input cam shaft is located in the cam box cavity and is fixed with the first, second, third and fourth cams, the left end of the jacquard power input cam shaft is supported on the jacquard wall plate, and the right end is supported on the right cover plate of the cam box; the power device comprises a permanent magnet motor, the permanent magnet motor comprises a stator and a rotor, and the rotor is directly fixed on the jacquard power input cam shaft cantilever end of the jacquard power input cam shaft, and the jacquard power input cam shaft is directly driven by the rotor. Advantage: meet the requirements of jacquard heavy load and variable load and large starting torque, reflect the requirements of the precision of the loom, simple structure, high transmission efficiency and low power consumption.

Description

Technical Field

[0001] This invention belongs to the field of jacquard machine technology, specifically relating to a power device for a permanent magnet motor direct-drive jacquard machine. Background Technology

[0002] The aforementioned jacquard machine mainly refers to, but is not absolutely limited to, electronic jacquard machines. An electronic jacquard machine is a type of textile equipment that typically employs computer information processing technology to convert the pattern information of the jacquard fabric into information for the jacquard machine. The electromagnetic needle selection mechanism of the electronic jacquard machine is controlled by a computer program (see, for example, CN10184698B , CN105821553B <Jacquard Machine Electromagnetic Valve Assembly>, CN104775228B , CN205046269U <An Electronic Jacquard Machine Needle Selection Mechanism>, CN211560275U <Jacquard Machine Electromagnetic Needle Selection Device>, and CN214830937U <An Electronic Jacquard Machine Needle Selection Mechanism>, etc.), and works in conjunction with the mechanical movement of the loom to achieve jacquard weaving of the fabric.

[0003] In existing jacquard looms without a vertical shaft drive, the machine is typically powered by a servo motor. Because servo motors have high speed and low torque characteristics, a reduction gear is used between the motor and the loom. Whether internal or external, this reduction gear reduces speed and increases torque. However, external reduction gears, due to the use of diaphragm couplings, result in a relatively long transmission chain, a less neat and compact appearance, and, due to their multi-stage transmission, high cost, noise, low transmission efficiency, and high power consumption. Internal reduction gears, on the other hand, require high precision in the machining of the reduction gears, increasing manufacturing difficulty and operating costs. If the reduction gear is directly mounted on the motor, the motor bearings are easily damaged, maintenance is difficult and costly, and the servo motor's reduction drive also suffers from low efficiency and high power consumption.

[0004] Technical information related to the power unit of a jacquard machine can be found in publicly available Chinese patent documents. For example, CN219731193U recommends "a servo direct-drive jacquard machine," which is driven by a servo motor, which drives a reduction gearbox. The reduction gearbox then drives the output shaft through a series of reduction gears. This output shaft is essentially the final power output shaft of the reduction gearbox, similar to the input camshaft described in CN109355862B (Electronic Jacquard Machine Conjugate Cam Drive Mechanism). The first and second cams fixed on the input camshaft drive the cam swing arm fixed on the swing arm shaft. The cam swing arm drives the swing arm shaft, and the alternating clockwise and counterclockwise movement of the swing arm shaft drives the first and second swing arms. Finally, the first and second swing arms drive the first and second tie rods respectively. Since the upper ends of the first and second tie rods are connected to the first and second swing arms respectively, and the lower ends of the first and second tie rods are connected to the knife lifting mechanism respectively, the jacquard machine is ultimately driven (see the description in the background section of CN109355762B for details). Therefore, it can be seen that CN219731193U employs a reduction gear mechanism (gearbox), thus exhibiting the deficiencies mentioned by the applicant. Similarly, CN112899847B provides a "power transmission and reduction mechanism for a servo motor direct-drive jacquard machine," in which a drive gear fixed on the servo motor shaft (referred to in the patent as the "output shaft") meshes with a first-stage reduction driven gear mounted on the main drive shaft (i.e., the camshaft), thereby driving the first-stage reduction driven gear. The first-stage reduction driven gear then drives the main drive shaft, which in turn drives the cam fixed thereon. The rest is similar to the description of CN219731193U. Furthermore, as can be seen from paragraphs 0019 to 0023 of the specification of CN112899847B, this patent also essentially uses a gearbox as a reduction mechanism, thus exhibiting the same drawbacks as the preceding patent CN219731193U. Furthermore, as is known in the industry, servo motors are typically suitable for high-speed, light-load applications, while jacquard machines are characterized by heavy loads, the need for speed regulation, and high torque. Therefore, exploring how to abandon the traditional design mindset of using servo motors to directly drive jacquard machines, thereby largely eliminating the drawbacks of existing technologies and finding a reasonable balance between the high-speed, light-load operation of the servo motor and the heavy load of the jacquard machine to avoid blindly pursuing design solutions, is of significant positive importance. The technical solution described below arose in this context. Summary of the Invention

[0005] The primary objective of this invention is to provide a power unit for a direct-drive jacquard loom with a permanent magnet motor that helps meet the requirements of heavy and variable loads, high starting torque to adapt to the precision of the loom, eliminates the need for a transmission chain, improves transmission efficiency and reduces power consumption to achieve energy saving, reduces manufacturing costs and failure rate.

[0006] Another objective of the present invention is to provide a power unit for a permanent magnet motor direct-drive jacquard machine that is beneficial for effectively cooling the motor during operation, thereby ensuring the motor has greater overload capacity and fully ensuring adaptability to high-load jacquard machines.

[0007] To fulfill the primary objective of this invention, the technical solution provided is as follows: a power unit for a permanent magnet motor direct-drive jacquard machine, comprising a pair of parallel bottom frame beams; a cam box fixed between opposite sides of the pair of bottom frame beams, the left side of the cam box being fixed to the middle of the right side of the jacquard machine wall panel to form an integral structure with the wall panel, the right side of the cam box forming a cam box opening and equipped with a right cam box cover plate for closing the cam box opening; the front and rear ends of the jacquard machine wall panel being supported and fixed to the pair of bottom frame beams respectively; a jacquard machine power input camshaft, the middle of which is located within the cam box cavity of the cam box and fixed with a first cam I, a second cam II, a third cam III, and a fourth cam II. Cam IV, the left end of the jacquard machine power input camshaft is rotatably supported on the jacquard machine wall plate via a left support bearing seat, while the right end of the jacquard machine power input camshaft is rotatably supported on the right cover plate of the cam box via a right support bearing seat and extends to the right side of the right cover plate of the cam box to form a cantilever end of the jacquard machine power input camshaft; the power device includes a permanent magnet motor, which includes a stator and a rotor. The left end of the stator is fixed to the right side of the right cover plate of the cam box, and the right end of the stator is equipped with a stator right end cover. The rotor is disposed inside the stator. The characteristic is that the rotor is directly fixed on the cantilever end of the jacquard machine power input camshaft and the jacquard machine power input camshaft is directly driven by the rotor.

[0008] To achieve another objective of this invention, the technical solution provided by this invention is as follows: A jacket is provided on the outer wall of the stator and around the perimeter of the stator. The space between the inner wall of the jacket and the outer wall of the stator forms a cooling cavity. A cooling medium channel is formed on the outer wall of the stator and around the perimeter of the stator in the area corresponding to the cooling cavity. The opening of the cooling medium channel faces the jacket and is closed by the inner wall of the jacket. A cooling medium inlet and a cooling medium outlet are provided on the outer wall of the jacket. The cooling medium inlet and the cooling medium outlet communicate with the cooling medium channel and are each connected to an external cooling medium supply source by a pipeline. The cooling medium is a coolant.

[0009] In a specific embodiment of the present invention, a jacquard loom camshaft cantilever end probe hole is provided at the center of the right end cover of the stator, and a loom synchronization signal acquisition mechanism is provided on the right side of the right end cover of the stator. The right end of the jacquard loom power input camshaft cantilever end probe hole is inserted into the jacquard loom camshaft cantilever end probe hole in a non-contact state with the hole wall of the jacquard loom camshaft cantilever end probe hole. The loom synchronization signal acquisition mechanism is connected to the right end face of the jacquard loom power input camshaft cantilever end.

[0010] In another specific embodiment of the present invention, the loom synchronization signal acquisition mechanism includes a rotary encoder mounting bracket and a rotary encoder. Each end of the rotary encoder mounting bracket is fixed to the right side of the stator right end cover by a rotary encoder mounting bracket fixing screw. A cavity is formed between the middle part of the rotary encoder mounting bracket and the right side of the stator right end cover, and a rotary encoder rotating shaft clearance hole is opened at the position corresponding to the insertion hole of the cantilever end of the jacquard machine camshaft. The rotary encoder has a rotary encoder rotating shaft, which passes through the rotary encoder rotating shaft clearance hole in the cavity and is fixedly connected to the right end face of the cantilever end of the jacquard machine power input camshaft. The rotary encoder is fixed to the right side of the middle part of the rotary encoder mounting bracket.

[0011] In another specific embodiment of the present invention, a camshaft cantilever end head with a diameter smaller than that of the camshaft cantilever end of the jacquard machine is formed at the right end of the cantilever end of the power input camshaft of the jacquard machine. A set of camshaft cantilever end head screw holes are spaced apart on the right end face of the camshaft cantilever end head. The rotary encoder rotating shaft is fixed to the right end face of the camshaft cantilever end head by screws at the position corresponding to the set of camshaft cantilever end head screw holes.

[0012] In another specific embodiment of the present invention, the cooling medium channel is a spiral groove, the cooling medium inlet is located on the outer wall of the jacket corresponding to the starting end of the spiral groove, and the cooling medium outlet is located on the outer wall of the jacket corresponding to the ending end of the spiral groove.

[0013] In another specific embodiment of the present invention, a front fixing arm of the cam box extends from the front side of the outer wall of the cam box, and a rear fixing arm of the cam box extends from the rear side of the outer wall of the cam box. The front end of the front fixing arm of the cam box is fixed to the rear side of the front bottom frame beam of the pair of bottom frame beams by a set of front fixing arm bolts. The rear end of the rear fixing arm of the cam box is fixed to the front side of the rear bottom frame beam of the pair of bottom frame beams by a set of rear fixing arm bolts. An oil injection hole communicating with the cam box cavity is provided on the upward-facing side of the cam box, and an oil injection hole vent plug is provided at the position corresponding to the oil injection hole.

[0014] In a further specific embodiment of the present invention, the permanent magnet motor direct-drive jacquard machine further includes a swing arm shaft and a pull rod shaft concentrically positioned. The swing arm shaft is located inside the pull rod shaft and forms a loose sleeve relationship with the pull rod shaft. The left ends of the swing arm shaft and the pull rod shaft are rotatably supported by bearings on the left wall panel of the jacquard machine, corresponding to the left side of the wall panel. The right ends of the swing arm shaft are rotatably supported by swing arm shaft support bearings on the jacquard machine wall panel and the right cover plate of the cam box, respectively. A cam swing arm is rotatably mounted at the right end of the swing arm shaft and within the cam box cavity. A first roller I is rotatably mounted at the lower front part of the cam swing arm via a first roller shaft I. The rim of the first roller I... A second roller II is rotatably mounted on the lower rear part of the cam swing arm via a second roller shaft II, in contact with the rim of the first cam I. The right end of the pull rod shaft is rotatably supported on the jacquard machine wall panel via a pull rod shaft support bearing. A pull rod shaft swing arm is rotatably mounted on the right end of the pull rod shaft and located within the cam box cavity. A first roller I is rotatably mounted on the lower front part of the pull rod shaft swing arm via a first roller shaft, and the first roller I is in contact with the rim of the third cam III. A second roller II is rotatably mounted on the lower rear part of the pull rod shaft swing arm via a second roller shaft, and the second roller II is in contact with the rim of the fourth cam IV.

[0015] In a further specific embodiment of the present invention, a permanent magnet motor mounting bracket support beam is fixedly connected between the right ends of the pair of bottom frame beams. The permanent magnet motor is fixed on the permanent magnet motor mounting bracket, and the permanent magnet motor mounting bracket is fixed at the middle of the length direction of the permanent magnet motor mounting bracket support beam.

[0016] In yet another specific embodiment of the present invention, the permanent magnet motor has a permanent magnet motor shaft, the left end of which is connected to the cantilever end of the power input camshaft of the jacquard machine via a permanent magnet motor shaft coupling.

[0017] The technical advantages of the present invention are as follows: Since the rotor of the permanent magnet motor is directly connected to the cantilever end of the power input camshaft of the jacquard loom, a direct drive is achieved. This not only helps to meet the requirements of heavy-load and variable-load jacquard looms with high starting torque, thus adapting to the precision of the loom, but also facilitates the creation of a transmission chain without any speed reduction components, demonstrating structural simplicity. It significantly improves transmission efficiency, reduces power consumption, achieves energy saving, reduces manufacturing costs, and lowers the failure rate during use. Furthermore, since a jacket is provided on the outer wall of the stator and around its perimeter, the space between the inner wall of the jacket and the outer wall of the stator forms a cooling chamber, and a cooling medium channel is formed on the outer wall of the stator, communicating with the cooling medium inlet and outlet ports provided on the jacket, the permanent magnet motor can obtain a greater overload capacity, fully meeting the requirements for high-load jacquard looms. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the first embodiment of the present invention; Figure 2 for Figure 1 The sectional view of the cam box shown; Figure 3 This is a structural diagram of the second embodiment of the present invention. Detailed Implementation

[0019] To better understand the technical essence and beneficial effects of the present invention, detailed descriptions will be provided below using embodiments. However, the descriptions of the embodiments are not intended to limit the scope of the present invention. Any formal but not substantive equivalent transformations made based on the concept of the present invention should be considered within the scope of the present invention.

[0020] In the following description, all directional or positional concepts involving up, down, left, right, front, and back are based on... Figure 1 and Figure 2 The current position is a baseline and therefore should not be construed as a specific limitation on the technical solution provided by this invention. Example 1

[0021] Please see Figure 1 and Figure 2The diagram illustrates a pair of parallel bottom frame beams 1 of a permanent magnet motor direct-drive jacquard machine's structural system. A cam box 2 is shown, fixed between opposite sides of the pair of bottom frame beams 1. The left side of the cam box 2 is fixed to the middle of the right side of the jacquard machine wall panel 3, forming an integral structure with the wall panel 3. The right side of the cam box 2 forms a cam box opening 21 and, after adding a sealing gasket, is fitted with a right cam box cover plate 22 for closing the opening 21. The front and rear ends of the aforementioned jacquard machine wall panel 3 are respectively supported and fixed to the pair of bottom frame beams 1. A jacquard machine power input camshaft 4 is shown, with its middle portion located within the cam box cavity 23 of the cam box 2 and fixed with a first cam I 42, a second cam II 43, a third cam III 45, and a fourth cam IV 46. The left end of the jacquard machine power input camshaft 4 is connected via... The left support bearing seat of the jacquard machine power input camshaft is rotatably supported on the aforementioned jacquard machine wall panel 3, while the right end of the jacquard machine power input camshaft 4 is rotatably supported on the right cover plate 22 of the cam box via the right support bearing seat 44 of the jacquard machine power input camshaft and extends to the right side of the right cover plate 22 of the cam box to form the cantilever end 41 of the jacquard machine power input camshaft; a permanent magnet motor 5 is shown as the structural system of the power unit. The permanent magnet motor 5 includes a stator 51 and a rotor 52. The left end (also referred to as the "left side") of the stator 51 forms a stator fixing flange edge 511, which is fixed to the right side of the right cover plate 22 of the cam box by stator fixing flange edge screws 5111 at the position corresponding to the right cover plate screw hole 221 opened on the right cover plate 22 of the cam box. The right end (also referred to as the "right side") of the stator 51 is equipped with, i.e., a stator right end cover 512 is fixed thereon, and the rotor 52 is disposed inside the stator 51.

[0022] The key technical point of the technical solution provided by the present invention is that the aforementioned rotor 52 is directly fixed on the cantilever end 41 of the aforementioned jacquard machine power input camshaft 4, and the rotor 52 directly drives the jacquard machine power input camshaft 4.

[0023] Based on the above explanation and in combination Figure 1 As can be seen from the diagram, the rotor shaft of the rotor 52 of the aforementioned permanent magnet motor 5 is essentially combined with the cantilever end 41 of the jacquard machine power input camshaft 4. Alternatively, it can be considered that the cantilever end 41 of the jacquard machine power input camshaft 4 is actually part of the rotor shaft of the rotor 52, and further, the jacquard machine power input camshaft 4 can be considered to be essentially the rotor shaft of the rotor 52 of the permanent magnet motor 5.

[0024] exist Figure 1The document also shows a power connection socket 56 located outside the permanent magnet motor 5. When the permanent magnet motor 5 is operated under the control of the electrical controller, the rotor 52 drives the cantilever end 41 of the jacquard machine power input camshaft, causing the entire jacquard machine power input camshaft 4 to rotate. The rotation of the jacquard machine power input camshaft 4 drives the aforementioned first cam I 42 and second cam II 43, thus confirming the direct-drive technical concept described above by the applicant. This design is groundbreaking compared to existing technologies, representing an innovative design made while overcoming the technical biases in existing technologies, thereby fulfilling the technical effects recorded by the applicant in the technical effects section above.

[0025] To achieve the technical effects mentioned by the applicant in the above technical effects section, the present invention provides a jacket 53 on the outer wall of the aforementioned stator 51 and around the outer wall of the stator 51. The space between the inner wall of the jacket 53 and the outer wall of the stator 51 forms a cooling cavity. A cooling medium channel 513 is formed on the outer wall of the stator and around the stator 51 in the area corresponding to the aforementioned cooling cavity. The opening of the cooling medium channel faces the jacket 53 and is closed by the inner wall of the jacket 53, i.e., the side of the jacket 53 facing the stator 51. A cooling medium inlet port 531 and a cooling medium outlet port 532 are provided on the outer wall of the aforementioned jacket 53. The cooling medium inlet port 531 and the cooling medium outlet port 532 communicate with the aforementioned cooling medium channel 513 and are each connected to an external cooling medium supply source, such as a coolant pool equipped with a circulating pump or other similar facilities, by a pipeline. Therefore, it can be seen that the aforementioned cooling medium channel 513 is only connected to the outside through the cooling medium inlet port 531 and the cooling medium outlet port 532, while the rest is sealed by the wall of the jacket 53 facing the stator 51. The applicant should note that the aforementioned cooling medium inlet port 531 and cooling medium outlet port 532 are preferably located at both ends of the jacket 53, such as the left and right ends respectively, or they can be arranged diagonally opposite each other.

[0026] In this embodiment, the aforementioned cooling medium is a coolant, which can be water or other similar coolants such as oil. In this embodiment, water is used. This design ensures that the permanent magnet motor 5 operates in good condition and does not consume load capacity due to heat generation.

[0027] Another implementation is to provide a jacket 53 outside the stator 51 of the permanent magnet motor 5, and to form a reliable sealing relationship between the two ends of the jacket 53 and the outer wall of the stator 51. A cavity is formed between the inner wall of the middle region of the jacket 53 and the outer wall of the stator 51, and the cavity constitutes a cooling cavity. A cooling medium inlet 531 communicating with the cooling cavity is provided at one end of the jacket 53, and a cooling medium outlet 532 is provided at the other end. This design simplifies the structure of the permanent magnet motor 5 by eliminating the need to form the aforementioned cooling medium channel on the outer wall of the stator 51.

[0028] See you later Figure 1 A jacquard loom camshaft cantilever end probe hole 5121 is provided in the center of the aforementioned stator right end cover 512, and a loom synchronization signal acquisition mechanism 6 is provided on the right side of the stator right end cover 512. The right end of the aforementioned jacquard loom power input camshaft cantilever end 41 is inserted into the jacquard loom camshaft cantilever end probe hole 5121 in a state of non-contact with the hole wall of the aforementioned jacquard loom camshaft cantilever end probe hole 5121. The aforementioned loom synchronization signal acquisition mechanism 6 is connected to the right end face of the jacquard loom power input camshaft cantilever end 41.

[0029] The aforementioned loom synchronization signal acquisition mechanism 6 includes a rotary encoder mounting bracket 61 and a rotary encoder 62. The two ends of the rotary encoder mounting bracket 61 are fixed to the right side of the stator right end cover 512 by a rotary encoder mounting bracket fixing screw 612. A cavity 613 is formed between the middle of the rotary encoder mounting bracket 61 and the right side of the stator right end cover 512. A rotary encoder rotating shaft clearance hole 611 is opened at the position corresponding to the cantilever end probe hole 5121 of the jacquard machine camshaft. The rotary encoder 62 has a rotary encoder rotating shaft 621. The rotary encoder rotating shaft 621 passes through the rotary encoder rotating shaft clearance hole 611 and is fixedly connected to the right end face of the cantilever end 41 of the jacquard machine power input camshaft in the cavity 613. The rotary encoder 62 is fixed to the right side of the middle of the rotary encoder mounting bracket 61.

[0030] Based on common knowledge, a rotary encoder is a device used to measure rotational speed and achieve rapid speed adjustment using PWM technology. For example, a photoelectric rotary encoder can convert mechanical quantities such as angular displacement and angular velocity of the output shaft into corresponding electrical pulses through photoelectric conversion and output them in digital form. In summary, since the function of the aforementioned rotary encoder used in this invention is known technology, as mentioned in CN219731193U in the applicant's background section above, which states that "rotary encoders are installed on both the jacquard loom and the weaving machine, and the rotational speed of the jacquard loom is matched with that of the weaving machine in real time to ensure synchronous operation of the equipment," the applicant will not elaborate further.

[0031] See you later Figure 1 At the right end of the aforementioned jacquard machine power input camshaft cantilever end 41, there is a camshaft cantilever end shaft head 411 with a diameter smaller than that of the jacquard machine power input camshaft cantilever end 41. A set of camshaft cantilever end shaft head screw holes 4111 are spaced apart on the right end face of the camshaft cantilever end shaft head 4111. The aforementioned rotary encoder rotating shaft 621 is fixed to the right end face of the camshaft cantilever end shaft head 4111 by screws at the position corresponding to the set of camshaft cantilever end shaft head screw holes 4111.

[0032] In this embodiment, the aforementioned cooling medium channel 513 is a spiral groove with a cross-sectional shape tending towards a U-shape. The opening of this U-shape is sealed by the wall of the aforementioned sleeve 53 facing the stator 51. The position of the aforementioned cooling medium inlet port 531 on the outer wall of the aforementioned sleeve 53 corresponds to the starting end of the spiral groove, while the position of the aforementioned cooling medium outlet port 532 on the outer wall of the aforementioned sleeve 53 corresponds to the ending end (tail end) of the spiral groove. Based on this structural form, the cooling medium inlet and outlet ports 531 and 532 are preferably arranged at both ends or diagonally on the sleeve 53 as described above.

[0033] A cam box front fixing arm 24 extends from the front side of the outer wall of the aforementioned cam box 2, and a cam box rear fixing arm 25 extends from the rear side of the outer wall of the cam box 2. The front end of the cam box front fixing arm 24 is fixed to the rear side of the front bottom frame beam of the aforementioned pair of bottom frame beams 1 by a set of cam box front fixing arm bolts 241. The rear end of the cam box rear fixing arm 25 is fixed to the front side of the rear bottom frame beam of the aforementioned pair of bottom frame beams 1 by a set of cam box rear fixing arm bolts 251. An oil injection hole 26 communicating with the aforementioned cam box cavity 23 is provided on the upward side of the aforementioned cam box 2, and an oil injection hole vent plug 261 is provided at the position corresponding to the oil injection hole 26.

[0034] See you later Figure 1The aforementioned permanent magnet motor direct-drive jacquard machine structure also includes a concentric swing arm shaft 7 and a hollow tie rod shaft 8. The swing arm shaft 7 is located inside the tie rod shaft 8 and forms a loose sleeve relationship with the tie rod shaft 8. In use, the left ends of both the swing arm shaft 7 and the tie rod shaft 8 are rotatably supported by bearings on the left wall panel of the jacquard machine, corresponding to the left side of the aforementioned jacquard machine wall panel 3. Therefore, the aforementioned jacquard machine wall panel 3 can essentially be referred to as the right wall panel of the jacquard machine. The right ends of the swing arm shaft 7 are rotatably supported on the aforementioned jacquard machine wall panel 3 and the right cover plate 22 of the cam box via swing arm shaft support bearings 72. A cam swing arm 71 is rotatably mounted at the right end of the swing arm shaft 7 and located within the aforementioned cam box cavity 23. A first roller I 711 is rotatably mounted at the lower front part of the cam swing arm 71 via a first roller shaft I 7111, and the rim of the first roller I 711 contacts the rim of the aforementioned first cam I 42. A second roller II 712 is rotatably mounted at the lower rear part of the cam swing arm 71 via a second roller shaft II 7121, and the rim of the second roller II 712 contacts the rim of the aforementioned second cam II 43. The rim of the pull rod shaft 8 is in contact with the wheel rim; the right end of the pull rod shaft 8 is rotatably supported on the jacquard machine wall panel 3 by the pull rod shaft support bearing 82. A pull rod shaft swing bracket 81 is rotatably provided at the right end of the pull rod shaft 8 and located in the cam box cavity 23. A first roller I 811 is rotatably provided at the lower front part of the pull rod shaft swing bracket 81 by a first roller shaft (not shown in the figure). The first roller I 811 is in contact with the rim of the aforementioned third cam III 45. A second roller II 812 is rotatably provided at the lower rear part of the pull rod shaft swing bracket 81 by a second roller shaft (not shown in the figure). The second roller II 812 is in contact with the rim of the aforementioned fourth cam IV 46.

[0035] The rotation of the aforementioned jacquard machine power input camshaft 4 drives the first cam I 42, the second cam II 43, the third cam III 45 and the fourth cam IV 46 mounted thereon. Thus, the first roller I 711 is driven by the rim of the first cam I 42, and the second roller II 712 is driven by the rim of the second cam II 43, so that the cam swing arm 71 swings clockwise / counterclockwise according to the process requirements, thereby driving the swing arm shaft 7 to move accordingly. Since the first cam I 42 and the second cam II 43 move the cam swing frame 71 through the first roller I 711 and the second roller II 712 respectively, while the third cam III 45 and the fourth cam IV 46 drive the tie rod shaft swing frame 81 to swing clockwise / counterclockwise according to the process requirements through the first roller I 811 and the second roller II 812 respectively, the tie rod shaft swing frame 81 drives the tie rod shaft 8 to move, and the tie rod shaft 8 drives the tie rod (not shown in the figure). Since this process and its final working mechanism are known technologies, for example, see CN109355762B, the applicant will not elaborate further. Example 2

[0036] Please see Figure 3 In another embodiment of the present invention, a permanent magnet motor mounting bracket support beam 11 is fixedly connected between the right ends of the aforementioned pair of bottom frame beams 1. The aforementioned permanent magnet motor 5 is fixed on the permanent magnet motor mounting bracket 54, and the permanent magnet motor mounting bracket 54 is fixed at the middle part of the length direction of the permanent magnet motor mounting bracket support beam 11.

[0037] The aforementioned permanent magnet motor 5 has a permanent magnet motor shaft 55, the left end of which is connected to the cantilever end 41 of the aforementioned jacquard machine power input camshaft via a permanent magnet motor shaft coupling 551.

[0038] Although in Embodiment 2, compared to Embodiment 1, the rotor shaft of the rotor 52 is not incorporated into the cantilever end 41 of the jacquard machine power input camshaft 4, or in other words, the cantilever end 41 of the jacquard machine power input camshaft 4 is not part of the rotating shaft of the rotor 52, or in other words, the jacquard machine power input camshaft 4 is not actually the rotor shaft of the permanent magnet motor 5's rotor 52, its form still falls within the category of a power unit for a permanent magnet motor directly driven jacquard machine. This is because in this embodiment, only the permanent magnet motor 5 itself has the aforementioned permanent magnet motor shaft 55 (i.e., "permanent magnet motor rotor shaft"), and this permanent magnet motor shaft 55 is connected to the cantilever end 41 of the jacquard machine power input camshaft via a permanent magnet motor shaft coupling 551. Everything else is the same as described in Embodiment 1.

[0039] In summary, the technical solution provided by this invention makes up for the shortcomings of the prior art, successfully completes the invention task, and accurately realizes the technical effects described by the applicant in the above technical effects column.

Claims

1. A power unit for a permanent magnet motor direct-drive jacquard machine, the permanent magnet motor direct-drive jacquard machine comprising a pair of parallel bottom frame beams (1); a cam box (2), the cam box (2) being fixed between opposite sides of the pair of bottom frame beams (1), the left side of the cam box (2) being fixed to the middle of the right side of the jacquard machine wall panel (3) and forming an integral structure with the jacquard machine wall panel (3), the right side of the cam box (2) forming a cam box opening (21) and being equipped with a cam box right cover plate (22) for closing the cam box opening (21), the front end and rear end of the jacquard machine wall panel (3) being supported and fixed on the pair of bottom frame beams (1); a jacquard machine power input camshaft (4), the middle part of the jacquard machine power input camshaft (4) being located in the cam box cavity (23) of the cam box (2) and having a first cam I (42) and a second cam II (43) fixed therein. The jacquard machine power input camshaft (4) has a third cam III (45) and a fourth cam IV (46). The left end of the jacquard machine power input camshaft (4) is rotatably supported on the jacquard machine wall plate (3) by the left support bearing seat of the jacquard machine power input camshaft, while the right end of the jacquard machine power input camshaft (4) is rotatably supported on the right cover plate (22) of the cam box by the right support bearing seat (44) of the jacquard machine power input camshaft and extends to the right side of the right cover plate (22) of the cam box to form the cantilever end (41) of the jacquard machine power input camshaft. The power device includes a permanent magnet motor (5), which includes a stator (51) and a rotor (52). The left end of the stator (51) is fixed to the right side of the right cover plate (22) of the cam box, while the right end of the stator (51) is equipped with a stator right end cover (512). The rotor (52) is set inside the stator (51). The characteristic of the device is that: The rotor (52) is directly fixed to the cantilever end (41) of the power input camshaft (4) of the jacquard machine, and the rotor (52) directly drives the power input camshaft (4). A sleeve (53) is provided on the outer wall of the stator (51) and around the outer wall of the stator (51). The space between the inner wall of the sleeve (53) and the outer wall of the stator (51) forms a cooling cavity. A cooling cavity is formed on the outer wall of the stator and around the stator (51) in the area corresponding to the cooling cavity. A cooling medium channel (513) is formed, the opening of which faces the jacket (53) and is closed by the inner wall of the jacket (53). A cooling medium inlet port (531) and a cooling medium outlet port (532) are provided on the outer wall of the jacket (53). The cooling medium inlet port (531) and the cooling medium outlet port (532) are connected to the cooling medium channel (513) and are each connected to an external cooling medium supply source by a pipeline. The cooling medium is a coolant.

2. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 1, characterized in that: A jacquard loom camshaft cantilever end probe hole (5121) is provided in the center of the stator right end cover (512), and a loom synchronization signal acquisition mechanism (6) is provided on the right side of the stator right end cover (512). The right end of the jacquard loom power input camshaft cantilever end (41) is inserted into the jacquard loom camshaft cantilever end probe hole (5121) in a non-contact state with the hole wall of the jacquard loom camshaft cantilever end probe hole (5121). The loom synchronization signal acquisition mechanism (6) is connected to the right end face of the jacquard loom power input camshaft cantilever end (41).

3. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 2, characterized in that: The loom synchronization signal acquisition mechanism (6) includes a rotary encoder mounting bracket (61) and a rotary encoder (62). The two ends of the rotary encoder mounting bracket (61) are fixed to the right side of the stator right end cover (512) by a rotary encoder mounting bracket fixing screw (612). A cavity (613) is formed between the middle part of the rotary encoder mounting bracket (61) and the right side of the stator right end cover (512). A rotary encoder rotating shaft clearance hole (611) is opened at the position corresponding to the cantilever end probe hole (5121) of the jacquard machine camshaft. The rotary encoder (62) has a rotary encoder rotating shaft (621). The rotary encoder rotating shaft (621) passes through the rotary encoder rotating shaft clearance hole (611) and is fixedly connected to the right end face of the cantilever end (41) of the jacquard machine power input camshaft in the cavity (613). The rotary encoder (62) is fixed to the right side of the middle part of the rotary encoder mounting bracket (61).

4. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 3, characterized in that: At the right end of the cantilever end (41) of the power input camshaft of the jacquard machine, there is a camshaft cantilever end head (411) with a diameter smaller than that of the cantilever end (41) of the power input camshaft of the jacquard machine. A set of camshaft cantilever end head screw holes (4111) are spaced apart on the right end face of the camshaft cantilever end head (4111). The rotary encoder rotating shaft (621) is fixed to the right end face of the camshaft cantilever end head (4111) by screws at the position corresponding to the set of camshaft cantilever end head screw holes (4111).

5. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 1, characterized in that: The cooling medium channel (513) is a spiral groove. The cooling medium inlet (531) is located on the outer wall of the jacket (53) at the beginning of the spiral groove, and the cooling medium outlet (532) is located on the outer wall of the jacket (53) at the end of the spiral groove.

6. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 1, characterized in that: A cam box front fixing arm (24) extends from the front side of the outer wall of the cam box (2), and a cam box rear fixing arm (25) extends from the rear side of the outer wall of the cam box (2). The front end of the cam box front fixing arm (24) is fixed to the rear side of one of the two bottom frame beams (1) located in front by a set of cam box front fixing arm bolts (241). The rear end of the cam box rear fixing arm (25) is fixed to the front side of one of the two bottom frame beams (1) located in rear by a set of cam box rear fixing arm bolts (251). An oil injection hole (26) communicating with the cam box cavity (23) is provided on the upward side of the cam box (2), and an oil injection hole vent plug (261) is provided at the position corresponding to the oil injection hole (26).

7. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 1, characterized in that: The permanent magnet motor direct drive jacquard machine also includes a swing arm shaft (7) and a pull rod shaft (8) that are concentric with each other. The swing arm shaft (7) is located inside the pull rod shaft (8) and forms a loose sleeve relationship with the pull rod shaft (8). The left ends of the swing arm shaft (7) and the pull rod shaft (8) are rotatably supported by bearings on the left wall panel of the jacquard machine corresponding to the left side of the wall panel (3) of the jacquard machine in use. The right ends of the swing arm shaft (7) are supported by swing arm shaft support bearings (72). The cam is rotatably supported on the wall panel (3) of the jacquard machine and the right cover plate (22) of the cam box. A cam swing arm (71) is rotatably provided at the right end of the swing arm shaft (7) and located in the cam box cavity (23). A first roller I (711) is rotatably provided at the lower front part of the cam swing arm (71) via a first roller shaft I (7111). The rim of the first roller I (711) is in contact with the rim of the first cam I (42). A second roller II (712) is rotatably mounted on the lower rear part of the cam swing arm (71) via a second roller shaft II (7121). The rim of the second roller II (712) contacts the rim of the second cam II (43). The right end of the pull rod shaft (8) is rotatably supported on the jacquard machine wall panel (3) via a pull rod shaft support bearing (82). The pull rod shaft (8) is rotatably mounted on the right end of the pull rod shaft (8) and located within the cam box cavity (23). There is a tie rod shaft swing bracket (81). A first roller I (811) is rotatably disposed at the lower front part of the tie rod shaft swing bracket (81) via a first roller shaft. The first roller I (811) contacts the rim of the third cam III (45). A second roller II (812) is rotatably disposed at the lower rear part of the tie rod shaft swing bracket (81) via a second roller shaft. The second roller II (812) contacts the rim of the fourth cam IV (46).

8. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 1, characterized in that: A permanent magnet motor mounting support beam (11) is fixedly connected between the right ends of the pair of bottom frame beams (1). The permanent magnet motor (5) is fixed on the permanent magnet motor mounting base (54), and the permanent magnet motor mounting base (54) is fixed at the middle of the length direction of the permanent magnet motor mounting support beam (11).

9. The power unit of the permanent magnet motor direct-drive jacquard machine according to claim 8, characterized in that: The permanent magnet motor (5) has a permanent magnet motor shaft (55), the left end of which is connected to the cantilever end (41) of the power input camshaft of the jacquard machine via a permanent magnet motor shaft coupling (551).

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