An electric control box for a carbon fiber fabric rapier loom

Abstract

A kind of carbon fiber fabric's rapier loom electric control box belongs to weaving machine control technical field.It includes main frame and the box fixed by main frame, box is closable hermetic box, it is characterized in that: box includes high temperature box and low temperature box, high temperature box and low temperature box between the via-hole for lead wire is opened, fixed frame is arranged in low temperature box;The inner end surface of box backboard in high temperature box is installation surface, installation area is arranged on installation surface, box fin is arranged on the outer end surface of box backplate, and box fin is opposite the installation area of the inner end surface of box backplate.In the carbon fiber fabric's rapier loom electric control box of the present application, box is divided into closed high temperature box and low temperature box, according to the characteristics of high heat generation in high temperature box, box fin opposite installation area is arranged on the outer end surface of high temperature box, under the premise of meeting the heat dissipation requirement, effectively avoid the danger of carbon fiber and other conductive fibers entering the box.

Description

Technical Field

[0001] An electrical control box for a rapier loom for carbon fiber fabric belongs to the field of loom control technology. Background Technology

[0002] Rapier looms are a common type of weaving equipment in the textile industry. Because the operation of a rapier loom involves multiple complex processes such as selvage, winding, and weft selection, existing technologies typically include a separate electrical control box to control each actuator within the loom and complete the weaving process.

[0003] In the electrical control box of a rapier loom, some control components generate significant heat (such as silicon controlled rectifiers), making heat dissipation a key design consideration. In existing electrical control cabinets, the most common method is air cooling, as described in Chinese invention patent application number 202411553505.0 (filed November 2, 2024) entitled "An Electrical Control Box for Textile Machinery with a Thread Adsorption Structure," and Chinese utility model patent application number 202221885034.X (filed July 22, 2022) entitled "A Heat Dissipation Device for an Electrical Control Box in a Machining Center."

[0004] In existing technologies, including the aforementioned solutions, it is difficult to avoid the entry of textile fibers. Furthermore, with the continuous development of textile materials, in addition to traditional materials such as cotton, linen, wool, and silk, carbon fiber, due to its unique properties and applications, is gradually being used as a textile raw material. Unlike traditional textile materials, carbon fiber has high crystallinity and conductivity. In the carbon fiber weaving process, the scattered carbon fibers, due to their tiny particle size, can easily penetrate into every corner of the electrical system. Once these carbon fiber particles enter the electrical control box and adhere to critical parts such as circuit boards and terminals, they can form conductive bridges, leading to short circuits or abnormal operation, posing a significant safety hazard.

[0005] Therefore, the existing electrical control box structure is difficult to apply to carbon fiber weaving applications. Chinese invention patent application number 202111449982.9, filed on December 1, 2021, entitled "A Fully Sealed Constant Temperature Electrical Control Cabinet," describes a technical solution. This solution involves a sealed cabinet with radiators on both the inner and outer surfaces of the cabinet walls, and fans on the surfaces of these radiators. The purpose is to transfer internal heat to the internal heat sink via an internal exhaust fan, which then transfers the heat to the external heat sink, and finally, the external exhaust fan dissipates the heat from the external heat sink. However, in actual testing, it was found that this electrical control box structure fails to achieve the desired effect in weaving applications with high room temperatures. This is because, due to the sealed interior, the internal fan creates a hot air circulation within the cabinet, causing the overall temperature of the cabinet to rise. Therefore, designing an electrical control box suitable for carbon fiber weaving has become an urgent problem to be solved in this field. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electrical control box for rapier looms that divides the box into a sealed high-temperature box and a low-temperature box. In view of the high heat generation in the high-temperature box, heat sinks are provided on the outer end face of the high-temperature box facing the installation area. This effectively avoids the danger of carbon fiber fabrics entering the box after the conductive fibers such as carbon fiber enter the box, while meeting the heat dissipation requirements.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: the electrical control box for the rapier loom of carbon fiber fabric includes a main frame and a box body fixed by the main frame. The box body is an openable and closable sealed box body. The box body is characterized in that: the box body includes a high temperature box body and a low temperature box body, and a through hole for lead wires is opened between the high temperature box body and the low temperature box body. A fixing frame is set in the low temperature box body; the inner end face of the back plate of the high temperature box body is the mounting surface, and a mounting area is set on the mounting surface. A heat sink is set on the outer end face of the back plate of the box body, and the heat sink is directly opposite the mounting area on the inner end face of the back plate of the box body.

[0008] Preferably, the main frame includes a base frame, on which a high-temperature chamber and a switched reluctance motor controller are arranged side by side, and a low-temperature chamber is arranged above the high-temperature chamber and the switched reluctance motor controller.

[0009] Preferably, a servo controller and a thyristor assembly are fixed in the mounting area of ​​the high-temperature enclosure.

[0010] Preferably, the mounting bracket in the cryogenic chamber includes a vertically fixed mounting bracket and multiple mounting plates arranged around the mounting bracket.

[0011] Preferably, a main control board, an interface board, an edge twisting control board, and a winding control board are fixed on multiple mounting plates on one side of the fixed frame, and a weft selection control board, a power board, a switch group, and a switching power supply are fixed on multiple mounting plates on the other side of the fixed frame.

[0012] Preferably, a transformer is also installed at the bottom of the high-temperature chamber, and a temperature control module is installed on the side wall of the high-temperature chamber.

[0013] Preferably, a front door and a rear door are respectively provided at the front and rear ends of the low-temperature chamber, and sealing strips are provided at the contact surfaces of the front and rear doors with the low-temperature chamber; a lower door is provided at the end of the high-temperature chamber, and sealing strips are provided at the contact surfaces of the lower door with the high-temperature chamber.

[0014] Compared with the prior art, the beneficial effects of this utility model are: In the electrical control box for the rapier loom of carbon fiber fabric in this application, the box is divided into a sealed high-temperature box and a low-temperature box. In view of the high heat generation in the high-temperature box, a heat sink is provided on the outer end face of the high-temperature box facing the installation area. While meeting the heat dissipation requirements, it effectively avoids the danger caused by conductive fibers such as carbon fiber entering the box.

[0015] In the electrical control box for the rapier loom of carbon fiber fabric in this application, a sealing strip is provided between the box body and the box door, which can effectively prevent conductive fiber particles from entering the box body.

[0016] In the electrical control box for the rapier loom of carbon fiber fabric in this application, a modular layout with upper and lower layers is adopted, with clear functions for each circuit board and convenient wiring. The switched reluctance motor controller is set up independently of the box, which facilitates the replacement of the switched reluctance motor controller to meet the power requirements of different looms.

[0017] Aviation plugs are used at the outlets of the switched reluctance motor controller and the high-temperature enclosure, which can ensure the sealed design of the control box and facilitate on-site wiring. Attached Figure Description

[0018] Figure 1 Isometric drawing of the electrical control box for a rapier loom used for carbon fiber fabric.

[0019] Figure 2 This is a front view of the electrical control box for a rapier loom used for carbon fiber fabric.

[0020] Figure 3 for Figure 2 Rear view.

[0021] Figure 4 for Figure 2 The left view.

[0022] Figure 5 for Figure 2 Rear view of the front cargo door when it is open.

[0023] Figure 6 for Figure 3 Rear view of the upper and lower rear cargo doors when open.

[0024] Figure 7 for Figure 5 Sectional view along the AA direction.

[0025] The components include: 1. Upper housing; 2. Front door; 3. Lower housing; 4. Housing heat sink; 5. First aviation connector; 6. Second aviation connector; 7. Switched reluctance motor controller; 8. Base frame; 9. Controller heat sink; 10. Rear door; 11. Lower door; 12. Main power interface; 13. Main control board; 14. Mounting plate; 15. Interface board; 16. Mounting bracket; 17. Edge twisting control board; 18. Winding control board; 19. Weft selection control board; 20. Power board; 21. Switch group; 22. Fixed guide rail; 23. Switching power supply; 24. Temperature control module; 25. Servo controller; 26. Thyristor group; 27. Transformer. Detailed Implementation

[0026] Figures 1-7 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-7 The present invention will be further described below.

[0027] like Figures 1-3 As shown, an electrical control box for a rapier loom for carbon fiber fabric (hereinafter referred to as the electrical control box) includes a main frame, which includes a base frame 8. Wheels are provided at the four corners of the bottom of the base frame 8, allowing the electrical control box to move. The main frame also includes uprights at the four corners of the upper surface of the base frame 8.

[0028] An upper housing 1 is mounted on top of four uprights on the surface of the base frame 8. A front door 2 is mounted on the front side of the upper housing 1, and a rear door 10 is mounted on the rear side of the upper housing 1. A lower housing 3 is mounted on one side of the surface of the base frame 8, and a lower door 11 is mounted on the rear end of the lower housing 3. Sealing strips are provided on the mating surfaces of the front door 2, the rear door 10, and the upper housing 1, and similarly, sealing strips are provided on the mating surfaces of the lower door 11 and the lower housing 3. Therefore, when the front door 2, the rear door 10, and the lower door 11 are closed, the upper housing 1 and the lower housing 3 can be kept in a sealed state.

[0029] A switched reluctance motor controller 7 is installed on the side of the lower housing 3, and the lower housing 3 and the switched reluctance motor controller 7 are arranged side by side at the lower part of the upper housing 1. A controller heat sink 9 is installed on the end face of the switched reluctance motor controller 7 facing away from the lower housing 3. Figure 4As shown, the end face of the lower housing 3 facing away from the switched reluctance motor controller 7 shares the same end face (the left end face of this electrical control box) as the end face of the upper housing 1. A main power interface 12 is provided on the upper part of this end face, through which external power is connected to this electrical control box. The power-on button and emergency stop button of this electrical control box are provided on the upper part of the main power interface 12.

[0030] Combination Figures 5-7 A fixing frame is vertically arranged in the middle of the inner cavity of the upper housing 1. The fixing frame consists of a mounting frame 16 arranged inside the upper housing 1 and multiple mounting plates 14 arranged around the mounting frame 16. Each upper mounting plate 14 is fixed to the mounting frame 16 and the inner wall of the upper housing 1, respectively. On the front side of the mounting frame 16, a main control board 13 is fixed inside the upper housing 1. An interface plate 15 is fixed to the lower part of the main control board 13. A twisting control board 17 is arranged on the side of the main control board 13, and a winding control board 18 is arranged below the twisting control board 17. The main control board 13, the interface plate 15, the twisting control board 17, and the winding control board 18 are respectively fixed on different mounting plates 14.

[0031] On the rear side of the mounting bracket 16, a weft selection control board 19 is fixed to the back of the twisting control board 17 via the same mounting plate 14, and a power board 20 is fixed to the back of the winding control board 18 via the same mounting plate 14. Two fixed guide rails 22 are laterally fixed to the back of the main control board 13 and the interface board 15 via the same mounting plate 14, respectively. The fixed guide rails 22 are DIN rails, as is known in the art. A switch assembly 21 is mounted on the fixed guide rail 22 on the back of the twisting control board 17. The switch assembly 21 includes contactors, circuit breakers, and other switching devices known in the art. A switching power supply 23 is mounted on the fixed guide rail 22 on the back of the winding control board 18.

[0032] Inside the lower housing 3, the back panel of the lower housing 3 serves as its mounting surface. A servo controller 25 is fixed on the inner end face of the back panel of the lower housing 3, and a silicon controlled rectifier (SCR) assembly 26 is located below the servo controller 25. A transformer 27 is located at the bottom of the lower housing 3, and a temperature control module 24 is fixed on the side wall of the lower housing 3. A heat sink 4 is located on the outer end face of the back panel of the lower housing 3, directly facing the servo controller 25 and the SCR assembly 26 located on the inner end face of the lower housing 3.

[0033] The specific connection method for this electrical control cabinet is as follows: The external power supply first enters through the main power interface 12, and after entering the upper housing 1, it passes through the power-on button and emergency stop button before connecting to the switch group 21. From there, it passes through the contactor and circuit breaker in the switch group 21, and then connects to the transformer 27, thyristor group 26, temperature control module 24, and servo controller 25 in the lower housing 3, and finally supplies power to the switched reluctance motor controller 7. The upper housing 1 and lower housing 3 are connected by through-holes, with sealing rings installed at the through-holes.

[0034] The power output terminal of transformer 27 is further connected to switching power supply 23 to realize the conversion between AC power and low-voltage DC power. The low-voltage DC power output from switching power supply 23 is then connected to weft selection control board 19, power board 20, main control board 13, twisting control board 17, winding control board 18 and interface board 15 to provide working voltage.

[0035] The electrical components arranged in the rapier loom include thermocouples, a button box, a machine body sensor, a brake electromagnetic coil, a winding servo motor, a spindle encoder, and a tension sensor. The button box, machine body sensor, and spindle encoder are connected to the lower housing 3 via a first aviation connector 5 located at the bottom of the lower housing 3. Specifically: the interface board 15 is connected to the main control board 13 via a flexible flat cable; the tension sensor is connected to the lower housing 3 via the first aviation connector 5 and is connected to the winding control board 18; the winding servo motor is connected to the lower housing 3 via the first aviation connector 5 and is connected to the servo controller 25; the electromagnetic brake coil is connected to the lower housing 3 via the first aviation connector 5 and is connected to the power board 20; the power board 20 is connected to the main control board 13 via a flexible flat cable; and the main control board 13, weft selection control board 19, selvedge control board 17, and winding control board 18 are connected to the lower housing 3 via a CAN bus. The main control board 13 is connected to the switched reluctance motor controller 7 via a CAN bus through a first aviation connector 5 and a second aviation connector 6 located at the bottom of the switched reluctance motor controller 7, and transmits control commands in real time. The thermocouple is connected to the temperature control module 24 inside the lower housing 3 through the first aviation connector 5. At the same time, the temperature control module 24 is connected to the thyristor group 26.

[0036] In summary, the electrical control box of this application is divided into a high-temperature box (i.e., lower box 3) and a low-temperature box (i.e., upper box 1) according to the degree of heat generation. The components and control board in the low-temperature box generate less heat during operation, so they are cooled naturally. However, the servo controller 25 and the thyristor in the high-temperature box generate more heat, so heat is dissipated through heat sinks 4 installed on the outer end face of the box wall. The heat is conducted through the box wall to the heat sinks 4, which further dissipate the heat. Furthermore, the upper box 1 and the lower box 3 form a sealed box through their respective closed doors, effectively preventing conductive fibers such as carbon fiber from entering the box and causing danger.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. An electrical control box for a rapier loom for carbon fiber fabric, comprising a main frame and a housing fixed to the main frame, the housing being an openable and closable sealed housing, characterized in that: The enclosure includes a high-temperature enclosure and a low-temperature enclosure. A through hole for wires is provided between the high-temperature enclosure and the low-temperature enclosure. A fixing frame is provided inside the low-temperature enclosure. The inner end face of the back panel of the high-temperature enclosure is the mounting surface. An mounting area is provided on the mounting surface. A heat sink (4) is provided on the outer end face of the back panel of the enclosure. The heat sink (4) is directly opposite the mounting area on the inner end face of the back panel of the enclosure.

2. The electrical control box for a rapier loom for carbon fiber fabric according to claim 1, characterized in that: The main frame includes a base frame (8), on which a high-temperature chamber and a switched reluctance motor controller (7) are arranged side by side, and a low-temperature chamber is arranged above the high-temperature chamber and the switched reluctance motor controller (7).

3. The electrical control box for a rapier loom for carbon fiber fabric according to claim 1, characterized in that: A servo controller (25) and a thyristor assembly (26) are fixed in the mounting area of ​​the high-temperature enclosure.

4. The electrical control box for a rapier loom for carbon fiber fabric according to claim 1, characterized in that: The mounting bracket in the cryogenic chamber includes a vertically fixed mounting bracket (16) and multiple mounting plates (14) arranged around the mounting bracket (16).

5. The electrical control box for a rapier loom of carbon fiber fabric according to claim 4, characterized in that: On one side of the mounting plate (14), a main control board (13), an interface board (15), a twisting control board (17), and a winding control board (18) are fixed. On the other side of the mounting plate (14), a weft selection control board (19), a power board (20), a switch group (21), and a switching power supply (23) are fixed.

6. The electrical control box for a rapier loom for carbon fiber fabric according to claim 1 or 2, characterized in that: A transformer (27) is installed at the bottom of the high-temperature chamber, and a temperature control module (24) is installed on the side wall of the high-temperature chamber.

7. The electrical control box for a rapier loom for carbon fiber fabric according to claim 1, characterized in that: A front door (2) and a rear door (10) are respectively provided at the front and rear ends of the low-temperature chamber. Sealing strips are provided on the contact surfaces of the front door (2) and the rear door (10) with the low-temperature chamber. A lower door (11) is provided at the end of the high-temperature chamber. Sealing strips are provided on the contact surfaces of the lower door (11) with the high-temperature chamber.

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