An intelligent constant temperature control system for wire drawing machine

Abstract

The present invention discloses an intelligent constant temperature control system for a wire drawing machine, comprising a reel, a reel base, a main shaft, a water jacket and a cooling circulation mechanism, wherein the reel is a double-layer reel, and an outer layer cooling liquid cavity is formed between the inner layer and the outer layer; the main shaft sleeve is arranged inside the inner layer of the reel, and the bottom is assembled on the reel base; an inner layer cooling liquid cavity is formed between the water jacket and the outer layer of the reel, and a drain port is arranged between the outer layer cooling liquid cavity and the inner layer cooling liquid cavity; the cooling circulation mechanism comprises a liquid inlet unit and a liquid outlet unit, the liquid outlet of the liquid inlet unit faces the inner wall of the outer layer of the reel, the liquid inlet of the liquid outlet unit is connected to the inner layer cooling liquid cavity, and the liquid inlet unit and the liquid outlet unit are both provided with a flow control valve, the flow control valve is connected to a PLC, and the PLC is connected to a temperature sensor for measuring the outer wall of the reel. By combining the inner circulation of the double-layer reel and high-pressure spraying, the cooling effect of the reel above the steel wire is improved, a constant temperature automatic control system is formed, and the wire drawing effect is guaranteed.

Description

Technical Field

[0001] The invention relates to an intelligent constant temperature control system for a wire drawing machine, belonging to the technical field of steel wire production equipment. Background Art

[0002] According to the regulations of the steel wire production process in the previous process, the temperature control requirement for the steel wire wound on the reel is generally <50℃. In the production process, since the steel wire undergoes multiple drawing passes, the steel wire and the mold generate a lot of heat during the compression process, so the steel wire must be cooled online. In addition to cooling the wire drawing die, the conventional cooling method of the existing reel is to cool the surface of the reel by spraying the inner wall of the reel, thereby achieving the effect of cooling the temperature of the steel wire. If the reel temperature exceeds 50℃ and the wire temperature is high, surface quality defects such as wire drawing marks, hairy wires, flat wires, etc. will occur; if the reel temperature is too high, it will also affect the lubrication of the steel wire by the mold, and also affect the quality of the lubricating powder. At the same time, when the steel wire is further processed in the later stage, wire breakage is more frequent, which seriously restricts the improvement of production efficiency.

[0003] At present, conventional wire drawing machines are equipped with drum water cooling. The specific method of drum cooling is: the wire drawing machine drum is built with a water jacket, and three ф10 water nozzles are configured on the water jacket, and the water nozzles are connected to the external pipes. During the machine tool production process, the ф10 water nozzle sprays the inner wall of the drum to achieve the effect of cooling the drum. Since the drum speed of each pass is different, the water supply of each drum nozzle must be manually adjusted. Therefore, this cooling method has the following disadvantages:

[0004] 1. When the temperature of each reel is controlled to <50℃, the cooling water flow must be adjusted manually. Due to different production specifications and different wire drawing passes, repeated adjustments are required to meet the control requirements.

[0005] 2. Since the distance between the water jacket and the drum of the wire drawing machine is too small, the ф10 water nozzle cannot ensure uniform cooling of the inner wall of the drum during the spraying process. A large amount of cooling water is directly refluxed along the inner wall of the drum and discharged. The cooling water effect cannot be fully utilized, resulting in excessive cooling water consumption and increased production costs.

[0006] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an intelligent constant temperature control system for a wire drawing machine.

[0008] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0009] An intelligent constant temperature control system for a wire drawing machine includes a reel, a reel base, a main shaft, a water jacket and a cooling circulation mechanism.

[0010] The reel is a double-layer reel, and an outer cooling liquid cavity is formed between the inner layer of the reel and the outer layer of the reel;

[0011] The main shaft is sleeved inside the inner layer of the reel, and the bottom is assembled on the reel base;

[0012] The water jacket is arranged on the inner side of the inner layer of the reel and is fixedly connected to the reel base. An inner cooling liquid cavity is formed between the water jacket and the inner layer of the reel, and a drain port is arranged between the outer cooling liquid cavity and the inner cooling liquid cavity.

[0013] The cooling circulation mechanism includes a liquid inlet unit and a liquid outlet unit, the liquid outlet of the liquid inlet unit faces the inner wall of the outer layer of the roll, and the liquid inlet of the liquid outlet unit is connected to the inner layer cooling liquid cavity. The liquid inlet unit and the liquid outlet unit are both provided with a flow control valve, and the flow control valve is connected to the PLC, and the PLC is connected to a temperature sensor for measuring the outer wall of the roll.

[0014] Furthermore, the reel base is provided with a water retaining ring on the inner side of the inner layer of the reel, and the water jacket is connected to the reel base through the water retaining ring to form an isolation space to prevent the coolant from penetrating into the reel main shaft, thereby extending the service life.

[0015] Furthermore, the reel is fixedly connected to the main shaft by a flat key. The reel can be configured to have a reel top ring and a top platform connected by fixing bolts at the top, and the top platform is connected to the main shaft by a flat key.

[0016] Furthermore, a reel shaft end cover is fixed to the top of the main shaft for locking the reel and the main shaft; the reel shaft end cover is locked on the main shaft by fixing bolts to prevent the reel from loosening.

[0017] Furthermore, the liquid inlet unit includes a liquid inlet pipe and a pressure water nozzle at the liquid outlet end of the liquid inlet pipe. The liquid inlet pipe passes through the reel base and the water jacket, and the pressure water nozzle faces the inner wall of the outer layer of the reel. When working, the pressure water nozzle sprays cooling liquid on the inner wall of the outer layer of the reel, which can quickly cool the inner wall of the outer layer of the reel. A flow control valve A is provided in the liquid inlet pipe.

[0018] Furthermore, the liquid outlet unit includes a liquid outlet pipe, the liquid inlet of the liquid outlet pipe is connected to the inner cooling liquid cavity, and the liquid outlet pipe is provided with a flow control valve B. The liquid inlet unit and the liquid outlet unit form a cycle according to the temperature control requirements, so that the reel can be fully cooled.

[0019] Furthermore, the temperature sensor is installed on the reel base to facilitate timely detection of the reel temperature above the steel wire.

[0020] Furthermore, the liquid inlet unit is provided with four sets, which are evenly distributed along the circumference of the reel, and continuously sprayed by pressure water nozzles to improve the efficiency of the cooling action.

[0021] The overall working mode of the intelligent constant temperature control system of the wire drawing machine described in the present invention is: the temperature of the steel wire wound on the drum is set to 50±1°C. During the production process, the temperature sensor detects the temperature of the drum. If the temperature exceeds 51°C, the PLC controls the liquid inlet unit and the liquid outlet unit to increase the flow rate to ensure that the temperature of the steel wire wound on the drum is cooled to less than 50°C. When the drum temperature is continuously below 49°C for more than 5 minutes, the liquid inlet and outlet flow rates are automatically reduced. In this way, the temperature of the steel wire wound on the drum is ensured to be 50±1°C.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention improves the cooling effect of the reel above the steel wire by combining double-layer reel internal circulation and high-pressure spraying, and arranges an in-and-out cooling circulation mechanism to form a constant temperature automatic control system to ensure the wire drawing effect.

[0024] After the constant temperature control system of the present invention is used, the quality of steel wire drawing is significantly improved, and defective products such as drawing marks and hairy wires can be reduced by about 300 tons per month, the frequency of wire breakage has decreased by more than 65% year-on-year, and the production efficiency has been improved by 1.2%. Compared with the cooling water cost, 35,000 yuan can be saved per month, and 420,000 yuan can be saved throughout the year. At the same time, the production of the subsequent processes is relatively smooth, and the first-time finished product rate of the product is significantly improved, which is suitable for industrial application and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a constant temperature control system for a wire drawing machine according to an embodiment of the present invention.

[0026] In the figure: 1- reel top ring; 2- fixing bolt; 3- pressure water nozzle; 4- reel; 41- reel outer layer, 42- reel inner layer; 5- temperature sensor; 6- water retaining ring; 7- liquid inlet pipe; 8- flow control valve A; 9- reel shaft end cover; 10- top platform; 11- water jacket; 12- coolant; 13- drain port; 14- steel wire; 15- reel base; 16- spindle; 17- flow control valve B; 18- liquid outlet pipe; 19- PLC. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] Example

[0031] like Figure 1 An intelligent constant temperature control system for a wire drawing machine shown in the figure comprises a reel 4, a reel base 15, a spindle 16, a water jacket 11 and a cooling circulation mechanism, wherein the reel 4 is a double-layer reel, and an outer cooling liquid cavity is formed between the inner layer 42 of the reel and the outer layer 31 of the reel; the spindle 16 is sleeved inside the inner layer 42 of the reel, and the bottom is assembled on the reel base 15; the water jacket 11 is arranged on the inner side of the inner layer 42 of the reel, and is fixedly connected to the reel base 15, an inner cooling liquid cavity is formed between the water jacket 11 and the inner layer 42 of the reel, and a drain port 13 is provided between the outer cooling liquid cavity and the inner cooling liquid cavity; the cooling circulation mechanism comprises a liquid inlet unit and a liquid outlet unit, the liquid outlet of the liquid inlet unit faces the inner wall of the outer layer 41 of the reel, the liquid inlet of the liquid outlet unit is connected to the inner cooling liquid cavity, and the liquid inlet unit and the liquid outlet unit are both provided with flow control valves, the flow control valve is connected to PLC19, and the PLC19 is connected to the temperature sensor 5 for measuring the outer wall of the reel 4.

[0032] The reel base 15 described in this embodiment is provided with a water retaining ring 6 on the inner side of the reel inner layer 42, and the water jacket 11 is fixed to the water retaining ring 6 by bolts 2, and is connected to the reel base 15 through the water retaining ring 6 to form an isolation space to prevent the coolant from penetrating into the main shaft 16 and extend the service life.

[0033] The top of the reel 4 in this embodiment is provided with a reel top ring 1 and a top platform 10 connected by fixing bolts 2, and the top platform 10 is connected to the main shaft 16 by a flat key. A reel shaft end cover 9 is also fixed on the top of the main shaft 16 for locking the reel and the main shaft, and the reel shaft end cover 9 is locked on the main shaft 16 by fixing bolts 2 to prevent the reel 4 from loosening.

[0034] The liquid inlet unit of this embodiment includes a liquid inlet pipe 7 and a pressure water nozzle 3 at the liquid outlet end of the liquid inlet pipe 7. The liquid inlet pipe 7 passes through the reel base 15 and the water jacket 11. The pressure water nozzle 3 faces the inner wall of the reel outer layer 41. When working, the pressure water nozzle 3 sprays the inner wall of the reel outer layer 41 with cooling liquid 12, which can quickly cool the inner wall of the reel outer layer 41. A flow control valve A8 is provided in the liquid inlet pipe 7. The liquid outlet unit includes a liquid outlet pipe 18, the liquid inlet of the liquid outlet pipe 18 is connected to the inner layer cooling liquid cavity, and a flow control valve B17 is provided in the liquid outlet pipe 18. The liquid inlet unit and the liquid outlet unit form a cycle according to the temperature control requirements, so that the reel can be fully cooled.

[0035] The temperature sensor 5 described in this embodiment is installed on the reel base 15 to facilitate timely detection of the temperature of the reel 4 above the steel wire 14.

[0036] The liquid inlet unit described in this embodiment is provided with four sets, which are evenly distributed along the circumference of the reel, and continuously sprayed through the pressure water nozzle 3 to improve the efficiency of the cooling action.

[0037] The overall working mode of the intelligent constant temperature control system of the wire drawing machine described in this embodiment is: set the working temperature of the reel 4 above the steel wire 14 to 50±1°C. During the production process, the external temperature sensor 5 detects the temperature of the reel 4 above the steel wire 14. If the temperature of the reel 4 above the steel wire 14 exceeds 51°C, after receiving the PLC19 signal, the flow control valve A8 for the inlet and the flow control valve B17 for the outlet automatically increase the flow rate to quickly cool the reel 4 above the steel wire 14 to below 50°C. When the temperature of the reel 4 above the steel wire 14 continues to be below 49°C and the cumulative time exceeds 5 minutes, the flow control valve A8 automatically reduces the amount of liquid inlet, and the flow control valve B17 reduces the amount of liquid discharge. In this way, the temperature of the reel 4 above the steel wire 14 is automatically controlled by the temperature of the coolant 12 to ensure that the temperature of the reel 4 above the steel wire 14 is constant at 50°C.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent constant temperature control system for a wire drawing machine, characterized in that It includes a reel, a reel base, a main shaft, a water jacket and a cooling circulation mechanism. The reel is a double-layer reel, and an outer cooling liquid cavity is formed between the inner layer of the reel and the outer layer of the reel; The main shaft is sleeved inside the inner layer of the reel, and the bottom is assembled on the reel base; The water jacket is arranged on the inner side of the inner layer of the reel and is fixedly connected to the reel base. An inner cooling liquid cavity is formed between the water jacket and the inner layer of the reel, and a drain port is arranged between the outer cooling liquid cavity and the inner cooling liquid cavity. The cooling circulation mechanism comprises a liquid inlet unit and a liquid outlet unit, the liquid outlet of the liquid inlet unit faces the inner wall of the outer layer of the roll, the liquid inlet of the liquid outlet unit is connected to the inner layer cooling liquid cavity, the liquid inlet unit and the liquid outlet unit are both provided with a flow control valve, the flow control valve is connected to the PLC, and the PLC is connected to a temperature sensor for measuring the outer wall of the roll; The liquid inlet unit includes a liquid inlet pipe and a pressure water nozzle at the liquid outlet end of the liquid inlet pipe, the liquid inlet pipe passes through the reel base and the water jacket, the pressure water nozzle faces the inner wall of the outer layer of the reel, and a flow control valve A is provided in the liquid inlet pipe; The liquid outlet unit comprises a liquid outlet pipe, a liquid inlet of the liquid outlet pipe is connected to the inner cooling liquid cavity, and a flow control valve B is arranged in the liquid outlet pipe.

2. The intelligent constant temperature control system for wire drawing machine according to claim 1 is characterized in that The reel base is provided with a water retaining ring on the inner side of the inner layer of the reel, and the water jacket is connected to the reel base through the water retaining ring.

3. The intelligent constant temperature control system for wire drawing machine according to claim 1 is characterized in that The reel is fixedly connected to the main shaft by means of a flat key.

4. The intelligent constant temperature control system for wire drawing machine according to claim 3 is characterized in that The top of the reel is provided with a reel top ring and a top platform which are fixedly connected, and the top platform is connected to the main shaft by a flat key.

5. The intelligent constant temperature control system for wire drawing machine according to claim 4 is characterized in that A reel shaft end cover is also fixed on the top of the main shaft to lock the reel and the main shaft.

6. The intelligent constant temperature control system for wire drawing machine according to claim 1 is characterized in that The temperature sensor is installed on the reel base.

7. The intelligent constant temperature control system for wire drawing machine according to claim 1 is characterized in that The liquid inlet units are provided with four sets, which are evenly distributed along the circumference of the reel.

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