Rapier loom with accurate speed regulation

Abstract

The rapier loom comprises a driving mechanism and a machine frame, a weft insertion mechanism and a beating-up mechanism are arranged on the machine frame, the weft insertion mechanism and the beating-up mechanism are in mechanical transmission operation through the driving mechanism, and the driving mechanism comprises a variable frequency motor, a driving belt wheel, a driven belt wheel and a transmission belt. The driving belt wheel is installed on an output shaft of the variable frequency motor and driven by the variable frequency motor to rotate, the driving belt is arranged on the rim of the driving belt wheel and the rim of the driven belt wheel in a sleeving mode, and when the driving belt wheel rotates, the driven belt wheel is driven by the driving belt to rotate. And the rims of the driving belt pulley and the driven belt pulley are provided with tooth holes meshed with the tooth profiles. The rapier loom is driven by the variable frequency motor, and the transmission belt cannot slip during transmission of the belt pulley.

Description

Technical Field

[0001] The utility model relates to a rapier loom with precise speed regulation, belonging to the technical field of textile machinery. Background Art

[0002] Rapier looms are widely used in various fields of the textile industry, including the production of clothing fabrics, home textile products, industrial textiles, etc. The driving mechanism of the rapier loom is the key part to ensure the normal operation of the loom. It is responsible for driving the rapier, reed and other key components to perform reciprocating motion to complete the process of weft insertion and beating-up. The driving mechanism is realized by the main motor transmitting the power to other components of the loom through pulleys, etc. The existing driving mechanism usually uses ordinary motors, which are difficult to accurately control during speed regulation. In addition, due to the tightness of the transmission belt, the pulley will slip during transmission, resulting in inaccurate speed regulation, thereby affecting the quality of the product. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a rapier loom with precise speed regulation, which is driven by a variable frequency motor and does not allow the transmission belt to slip during transmission. The speed regulation accuracy is improved, and the shortcomings of the existing technology can be solved.

[0004] The technical solution of the utility model is: a rapier loom with precise speed regulation, comprising a driving mechanism and a frame, wherein a weft insertion mechanism and a weft beating mechanism are provided on the frame, and the weft insertion mechanism and the weft beating mechanism are operated through mechanical transmission of the driving mechanism, the driving mechanism comprises a frequency conversion motor, a main pulley, a slave pulley, and a transmission belt, the main pulley is mounted on the output shaft of the frequency conversion motor and is driven to rotate by the frequency conversion motor, the transmission belt is sleeved on the rims of the main pulley and the slave pulley, and when the main pulley rotates, the slave pulley is driven to rotate by the transmission belt, and the transmission belt is a toothed belt with a tooth profile on its inner circumference, and the rims of the main pulley and the slave pulley are provided with tooth holes that mesh with the tooth profile.

[0005] It further includes a motor support, the variable frequency motor is slidably connected to the motor support, and the variable frequency motor slides relative to the motor support to adjust the distance between the main pulley and the slave pulley. The motor support is provided with a limiting mechanism that cooperates with the variable frequency motor. The limiting mechanism contacts the variable frequency motor in multiple directions to fix the variable frequency motor on the motor support.

[0006] Furthermore, the rims of the main pulley and the slave pulley have V-shaped belt grooves, the cross-section of the transmission belt is correspondingly V-shaped, the installation limit is located in the V-shaped belt groove, and the tooth holes are provided at the bottom of the V-shaped belt groove.

[0007] Furthermore, at least one of the slave pulley and the master pulley is provided with an inner cylinder coaxially distributed therewith, and an oil storage cavity communicating with the tooth hole is formed between the inner cylinder and the wheel rim.

[0008] Furthermore, the wheel rim is provided with an elastic reset plate that cooperates to block the tooth hole and the oil storage chamber. When the tooth shape of the transmission belt enters the tooth hole, it contacts the elastic reset plate. The elastic reset plate moves or deforms to connect the tooth hole with the oil storage chamber. After the tooth shape leaves the tooth hole, the elastic reset plate resets to block the tooth hole and the oil storage chamber.

[0009] By implementing the utility model, the frequency conversion motor realizes stepless speed regulation by changing the supply frequency through the frequency converter, thereby improving the operating efficiency and precision. When the transmission belt is mounted on the slave pulley and the master pulley, the tooth profile on the inner circumference meshes with the tooth holes on the slave pulley and the master pulley, which can keep the circumference of the transmission belt unchanged and prevent relative sliding with the pulley, thereby ensuring synchronous transmission, improving the transmission precision, and realizing precise speed regulation of the rapier loom. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of a rapier loom;

[0011] Figure 2 is a three-dimensional diagram of a driving mechanism;

[0012] Figure 3 It is a front view of the driving mechanism;

[0013] Figure 4 for Figure 3 A-direction sectional view;

[0014] Figure 5 It is a partial cross-sectional view of the transmission belt and pulley.

[0015] As shown in the figure: frame 1; frequency conversion motor 2; main pulley 3; slave pulley 4; transmission belt 5; tooth profile 6; tooth hole 7; motor support 8; slot 9; V-belt groove 10; inner cylinder 11; oil storage chamber 12; elastic reset plate 13; push rod 14. DETAILED DESCRIPTION

[0016] The embodiment of the present utility model: Figures 1 to 5As shown, a rapier loom with precise speed regulation includes a driving mechanism and a frame 1. The frame is provided with a weft insertion mechanism and a weft beating mechanism. The weft insertion mechanism and the weft beating mechanism are mechanically driven by the driving mechanism. The driving mechanism includes a frequency conversion motor 2, a main pulley 3, a slave pulley 4, and a transmission belt 5. The main pulley 3 is installed on the output shaft of the frequency conversion motor 2 and is driven to rotate by the frequency conversion motor 2. The slave pulley 4 is transferred to the frame 1. The transmission belt 5 is sleeved on the rims of the main pulley 3 and the slave pulley 4. When the main pulley 3 rotates, it drives the slave pulley 4 through the transmission belt 5. The pulley 4 rotates, and the frequency conversion motor 2 changes the supply frequency through the inverter to achieve stepless speed regulation, thereby improving operating efficiency and accuracy. The transmission belt 5 is a toothed belt with a tooth profile 6 on its inner circumference. The rims of the main pulley 3 and the slave pulley 4 are provided with tooth holes 7 that mesh with the tooth profile 6. When the transmission belt 5 is mounted on the slave pulley 4 and the main pulley 3, the tooth profile 6 on the inner circumference meshes with the tooth holes 7, thereby keeping the circumference of the transmission belt 5 unchanged and not sliding relative to the slave pulley 4 and the main pulley 3, thereby ensuring synchronous transmission, improving transmission accuracy, and realizing precise speed regulation of the rapier loom.

[0017] As a preferred embodiment, it includes a motor support 8, and the frequency conversion motor 2 is installed on the motor support 8 through the motor base. The motor support 8 is provided with a slot 9 along the length direction, and the motor base is provided with a corresponding screw hole. The bolt passes through the slot 9 and the screw hole and is connected with the nut. When the bolt and the nut are loosened, the motor base slides on the motor support 8 to adjust the distance between the main pulley 3 and the slave pulley 4 to facilitate the disassembly and assembly of the transmission belt 5, and then the nut is tightened to fix it on the motor support 8. In order to better fix it and prevent it from moving, the two ends of the motor support 8 are spirally connected with a push rod 14. After tightening the nut to fix it on the motor support 8, the push rod 14 is rotated so that the push rods 14 at both ends tighten the two ends of the motor base.

[0018] As a preferred embodiment, the rims of the main pulley 3 and the slave pulley 4 have a V-shaped belt groove 10, the cross-section of the transmission belt 5 is correspondingly V-shaped, and it is limitedly installed in the V-shaped belt groove 10. The tooth hole 7 is provided at the bottom of the V-shaped belt groove 10, which better limits the transmission belt 5 and facilitates the precise matching of the transmission belt 5 with the main pulley 3 and the slave pulley 4.

[0019] As a preferred embodiment, at least one of the slave pulley 3 and the main pulley 4 is provided with an inner cylinder 11 coaxially distributed therewith. As in the present application, the slave pulley 3 is cylindrical, and its hub is located on one side of the rim. A slot is provided on the inner side of the hub. The inner end of the inner cylinder 11 is placed in the slot, and the outer end is fixedly connected to the side of the slave pulley 3 away from the hub, so that an oil storage chamber 12 connected to the tooth hole 4 is formed between the inner cylinder 11 and the rim of the slave pulley 3. A refueling nozzle is provided on the inner cylinder 11, and lubricating grease can be added to the oil storage chamber 12 through the refueling nozzle. When the tooth shape 6 of the transmission belt 5 enters the tooth hole 4, it will come into contact with the lubricating grease, thereby achieving the effect of lubricating it, thereby reducing the wear of the transmission belt 5 and extending its service life.

[0020] As a preferred embodiment, the inner circumference of the rim of the pulley (such as the pulley 3) is provided with an elastic reset sheet 13 that blocks the tooth hole 4 from the oil storage chamber 12. For example, in this application, a pair of elastic reset sheets 13 are provided at each tooth hole 4. The elastic reset sheet 13 has elastic reset capability. Figure 5 As shown, in the absence of external force, the elastic reset plate 13 is in a state of blocking the tooth hole 4 and the oil storage chamber 12, preventing the lubricating grease in the oil storage chamber 12 from flowing out of the tooth hole 4 and volatilizing. When the tooth shape 6 of the transmission belt 5 enters the tooth hole 4, the elastic reset plate 13 is pushed open, and the top of the tooth shape 6 enters the oil storage chamber and contacts the lubricating grease. After the tooth shape 6 leaves the tooth hole 4, the elastic reset plate 13 is reset to block the tooth hole 4 and the oil storage chamber 12, thereby achieving lubrication of the transmission belt 5 and efficient use of the lubricant.

Claims

1. A rapier loom with precise speed regulation, comprising a drive mechanism and a frame, wherein a weft insertion mechanism and a beating-up mechanism are provided on the frame, wherein the weft insertion mechanism and the beating-up mechanism are mechanically driven by the drive mechanism, and wherein: The driving mechanism includes a variable frequency motor, a main pulley, a slave pulley, and a transmission belt. The main pulley is installed on the output shaft of the variable frequency motor and is driven to rotate by the variable frequency motor. The transmission belt is sleeved on the rims of the main pulley and the slave pulley. When the main pulley rotates, the slave pulley is driven to rotate by the transmission belt. The transmission belt is a toothed belt with a tooth shape on its inner circumference. The rims of the main pulley and the slave pulley have tooth holes that mesh with the tooth shape.

2. The rapier loom with precise speed regulation according to claim 1, characterized in that: It includes a motor support, the variable frequency motor is slidably connected to the motor support, and the variable frequency motor slides relative to the motor support to adjust the distance between the main pulley and the slave pulley. The motor support is provided with a limiting mechanism that cooperates with the variable frequency motor. The limiting mechanism contacts the variable frequency motor in multiple directions to fix the variable frequency motor on the motor support.

3. The rapier loom with precise speed regulation according to claim 1 or 2, characterized in that: The rims of the main pulley and the slave pulley are provided with V-shaped belt grooves, the cross section of the transmission belt is correspondingly V-shaped, and is limitedly installed in the V-shaped belt grooves, and the tooth holes are provided at the bottom of the V-shaped belt grooves.

4. The rapier loom with precise speed regulation according to claim 1 or 2, characterized in that: An inner cylinder coaxially distributed with the slave pulley and the master pulley is provided in at least one of the slave pulley and the master pulley, and an oil storage cavity communicating with the gear hole is formed between the inner cylinder and the wheel rim.

5. The rapier loom with precise speed regulation according to claim 4, characterized in that: The wheel rim is provided with an elastic reset plate that cooperates to block the tooth hole and the oil storage chamber. When the tooth shape of the transmission belt enters the tooth hole, it contacts the elastic reset plate. The elastic reset plate moves or deforms to connect the tooth hole with the oil storage chamber. After the tooth shape leaves the tooth hole, the elastic reset plate resets to block the tooth hole and the oil storage chamber.

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