Linkage control device of stopper rod for crystallizer sprue

Abstract

The utility model belongs to the technical field of continuous casting, and discloses a linkage control device of a stopper rod for a crystallizer sprue, which is characterized in that a control panel is fixedly arranged on the left side of the bottom in a box body, and a radiator is fixedly arranged on the left side of a fixing frame; the square groove is fixedly formed in the middle of the upper part of the box body; the limiting frame is fixedly arranged at the upper part of the square groove close to the left end; the lever pin shaft is fixedly arranged at the upper part of the right end of the square groove; the U-shaped limiting frame is fixedly arranged at the upper parts of the front and rear ends of the lever pin shaft; the fixed groove plate sleeves the upper part of the left end of the lever plate; the lever plate is mounted on the lever pin shaft; the elastic traction mechanism is fixedly arranged in the middle of the bottom in the box body; the linear actuator is fixedly arranged on the right side of the elastic traction mechanism; and the stopper rod is hung at the right end of the lever plate. The utility model has the beneficial effects that the vertical flexibility of the stopper rod is improved, so that the precise adaptive control on the opening degree of a crystallizer injection port is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous casting, and particularly relates to a linkage control device for a stopper rod used for a nozzle of a mold. Background Art

[0002] A mold is a trough-shaped container, which can be divided into an evaporation crystallizer and a cooling crystallizer according to its use. For the continuous casting and smelting industry, the main function of the continuous casting mold is to receive the molten steel injected from the tundish, and through forced cooling by a water-cooled copper wall, the molten steel is solidified into a solid shell according to a specified cross-sectional shape, or the cooled molten metal is guided into a forming mold through a dummy bar mechanism for forming. Therefore, the mold is the most critical component of the continuous casting machine and plays an important role in the non-ferrous metal smelting process. A chute for conveying molten metal liquid is arranged on one side of the upper part of the mold, and a nozzle for injecting molten metal liquid into the mold is arranged at the connection between the chute and the mold.

[0003] In the prior art, the height control of the molten metal liquid level in the mold is realized by an eddy current sensor. If the height of the molten metal liquid level in the mold is too low, the residence time of the entering molten metal liquid in the mold is too short, which may cause incomplete solidification of the molten metal liquid in the mold and poor consistency of the quality of the ingot product. Therefore, in the continuous casting production process, the fluctuation of the molten metal liquid level in the mold must be kept within a certain process range, otherwise it will directly affect the billet drawing quality and cause a breakout accident. Therefore, in order to keep the molten metal liquid level in the mold within a reasonable fluctuation range all the time, it is necessary not only to detect the height of the molten metal liquid level in the mold in real time through the eddy current sensor, but also to keep the opening degree of the nozzle of the mold matched with the height of the molten metal liquid level in the mold, so as to keep the molten metal liquid level in the mold at a reasonable height all the time. At present, for the linkage control of the opening degree of the mold nozzle and the molten metal liquid level, the lifting action of a stopper rod (a high-temperature and corrosion-resistant round rod used to block the nozzle) is controlled by a simple linear actuator. The opening degree signal of the nozzle and the height signal of the molten metal liquid level in the mold are linked with each other, so as to control the lifting height of the stopper rod, and thus control the depth of the stopper rod inserted into the nozzle to realize the control of the opening degree of the nozzle. The main technical problems existing in the above control method are as follows: Since the linear actuator is directly fixedly connected to the stopper rod, the vertical flexibility of the stopper rod is insufficient, resulting in a large control error in the control of the opening degree of the mold nozzle, and directly leading to a large error in the control of the height of the molten metal liquid level in the mold. Based on the above defects in the prior art, the inventor has developed a linkage control device for a stopper rod used for a mold nozzle, which can well solve the above technical problems existing in the prior art. Summary of the Utility Model

[0004] In order to solve the above technical problems, the present utility model provides a linkage control device for a stopper rod used in a mold nozzle, with a simple, scientific and reasonable structural design, which greatly improves the vertical flexibility of the stopper rod. The present utility model can solve the problems that due to the direct fixed connection between the linear actuator and the stopper rod, the vertical flexibility of the stopper rod is insufficient, resulting in a large control error in the opening control of the mold nozzle, directly leading to a large error in the control of the molten metal liquid level in the mold.

[0005] The technical solution adopted by the utility model is as follows: A linkage control device for a stopper used in a mold nozzle, including a box body 1, an opening and closing door 2, and a rotating handle 3. The box body 1 is a hollow cube. The opening and closing door 2 is fixedly arranged on the left side surface of the box body 1 through a hinge. The rotating handle 3 is fixedly arranged at the middle position of the upper part of the opening and closing door 2. The rotating handle 3 is used to lock the opening and closing door 2 to the box body 1 by rotation. An eddy current cooler 4 is fixedly arranged at the front side position near the left end of the upper part of the box body 1. The eddy current cooler 4 is used to convey cooling gas into the box body 1 to cool it down. A three-way air valve 5 is fixedly arranged at the corresponding right side position of the eddy current cooler 4. The three-way air valve 5 is used to provide high-pressure air source to the eddy current cooler 4 and the heat dissipation row 8. A wire harness tube 6 is fixedly arranged at the corresponding rear side position of the eddy current cooler 4. The wire harness tube 6 is used to regularly place the power supply wires and signal transmission lines provided to the control board 7. The control board 7 is fixedly arranged at the left side position of the inner bottom of the box body 1. The control board 7 is fixedly arranged on the left side surface of the heat dissipation row 8. The heat dissipation row 8 is fixedly arranged on the left side of the fixing frame 9. The fixing frame 9 is fixedly arranged on the inner bottom surface of the box body 1. A square groove 10 is fixedly arranged at the middle position of the upper part of the box body 1. The square groove 10 is used to fixedly install a lever pin shaft 12 and a U-shaped limit frame 13. A limit frame 11 is fixedly arranged at the position near the left end of the upper part of the square groove 10. The limit frame 11 is used to limit and fix the rising position of the groove plate 14 and the lever plate 15. The lever pin shaft 12 is fixedly arranged at the upper right end position of the square groove 10. The lever pin shaft 12 is used to fix the lever plate 15 and make the lever plate 15 pivot with the lever pin shaft 12 as the fulcrum. The U-shaped limit frame 13 is fixedly arranged at the upper positions of the front and rear ends of the lever pin shaft 12. The U-shaped limit frame 13 is used to limit the rising height of the lever plate 15. The fixed groove plate 14 is sleeved on the upper left end of the lever plate 15. The telescopic cooperation between the fixed groove plate 14 and the lever plate 15 changes the transverse length of the lever plate 15. The lever plate 15 is installed on the lever pin shaft 12. The lever plate 15 is used to place and hang the stopper 18 and realize the lifting action of the stopper 18 with the lever pin shaft 12 as the fulcrum. An elastic traction mechanism 16 is fixedly arranged at the middle position of the inner bottom of the box body 1. The elastic traction mechanism 16 is located on the right side of the fixing frame 9. The upper part of the elastic traction mechanism 16 passes through the box body 1 and the square groove 10 and is fixed to the bottom left end of the fixed groove plate 14. A linear actuator 17 is fixedly arranged at the right side position of the elastic traction mechanism 16. The upper telescopic rod of the linear actuator 17 passes through the box body 1 and the square groove 10 and is fixed to the bottom of the fixed groove plate 14. The stopper 18 is hung on the right end of the lever plate 15. The stopper 18 corresponds to the nozzle in the chute on one side of the upper part of the mold up and down. The stopper 18 is inserted into the nozzle of the mold.

[0006] The eddy current cooler 4 includes an eddy current tube body 41. The upper part of the eddy current tube body 41 is a hot gas end 44, and the lower part of the eddy current tube body 41 is a cold gas end 43. The air inlet 42 is arranged at a position near the lower part on the rear side of the eddy current tube body 41.

[0007] The heat dissipation row 8 includes a heat dissipation row body 81. The heat dissipation row body 81 is fixedly arranged at the left side position of the fixing frame 9. An air inlet end 82 is opened at the middle position of the upper part of the heat dissipation row body 81, and an exhaust end 83 is opened at the front side of the heat dissipation row body 81.

[0008] The air inlet 42 is fixedly communicated with the rear side air hole of the three-way valve 5 through a trachea. The lower air outlet end of the three-way valve 5 extends into the interior of the box body 1. The lower air outlet end of the three-way valve 5 is fixedly communicated with the air inlet end 82 of the heat dissipation row body 81 through a trachea. The exhaust end 83 of the heat dissipation row body 81 is communicated with the outside through a trachea passing through the box body 1; the upper end of the three-way valve 5 is fixedly communicated with a gas source through a trachea.

[0009] The square groove 10 includes a square groove body 101. The square groove body 101 is a hollow cuboid structure with an upper part and a right side opening. A through hole one 102 is opened at a position near the left side in the middle of the bottom of the square groove body 101. A through hole two 103 is opened at the right side position of the through hole one 102. The through hole one 102 and the through hole two 103 are through holes passing through the square groove body 101 and the box body 1; the aperture of the through hole one 102 is smaller than the aperture of the through hole two 103.

[0010] The limiting frame 11 includes a limiting vertical plate 111. The limiting vertical plate 111 is fixedly arranged in a front-back symmetric manner. The bottom of the limiting vertical plate 111 is fixedly connected to the upper part of the box body 1. A circular column 112 is longitudinally fixedly arranged on the limiting vertical plates 111 arranged in a front-back symmetric manner.

[0011] The fixing groove plate 14 includes a groove plate body 141. The groove plate body 141 is a hollow strip shape with a lower part and a right end opening. A pin hole 142 is opened at a position near the lower part of the right end of the groove plate body 141. A locking hole 143 is opened at the upper part of the groove plate body 141. The locking hole 143 is located at the left side position of the pin hole 142. A locking screw 144 is tightened and fixed in the locking hole 143.

[0012] The lever plate 15 includes a lever plate body 151. The lever plate body 151 is an L-shaped plate. A telescopic groove 152 is opened at the middle position on the left side of the lever plate body 151. A plug rod mounting port 153 is opened at the front side of the lever plate body 151. The plug rod mounting port 153 is a U-shaped opening. A hanging and limiting groove 154 is opened at the upper right position of the plug rod mounting port 153.

[0013] The lever plate body 151 is sleeved in the groove plate body 141, and the locking screw 144 passes through the telescopic groove 152 of the lever plate body 151 and is tightened and locked by a nut.

[0014] The elastic traction mechanism 16 includes a base 161, the base 161 is fixedly arranged at the bottom of the box body 1, the lower traction hook of the tension spring 162 is buckled with the pin shaft on the base 161, a hook 164 is arranged at the bottom of the steel wire rope 163, the hook 164 is buckled with the upper traction hook of the tension spring 162, and the upper part of the steel wire rope 163 passes through the through hole 102 and is fixedly connected to the left bottom of the fixed groove plate body 141.

[0015] The telescopic rod of the linear actuator 17 passes through the through hole 103 and is fixedly connected to the bottom of the fixed groove plate body 141; the linear actuator 17 is fixedly connected to the control board 7 through a signal wire, and the power supply of the linear actuator 17 is fixedly connected to the control board 7 through a wire; the control board 7 is fixedly connected to the PLC in the central control room through a signal wire passing through the wire harness tube 6, and the power supply required by the control board 7 is fixedly connected to the power supply through a power wire passing through the wire harness tube 6.

[0016] The stopper rod 18 includes a stopper rod body 181, the stopper rod body 181 is cylindrical, and a conical plug body is arranged at the bottom of the stopper rod body 181; a short screw 182 is fixedly arranged at the upper center position of the hanging screw ring 183, and the stopper rod body 181 is fixedly arranged at the bottom center position of the hanging screw ring 183; a rotating rod 184 is longitudinally fixedly arranged at the upper position of the short screw 182, and a hanging rod 185 is longitudinally fixedly arranged at the outer right position of the hanging screw ring 183; the hanging screw ring 183 is placed at the center position of the stopper rod mounting opening 153, and the hanging rod 185 is placed in the hanging limit groove 154 of the stopper rod mounting opening 153.

[0017] The working process of the linkage control device for the stopper of the mold nozzle is as follows: First, the eddy current sensor set on the mold is used to real-time track and detect the height of the molten metal liquid level in the mold. The position signal obtained by the eddy current sensor is transmitted to the PLC in the central control room. Then, the PLC in the central control room sends a control signal for the stopper 18 that is adapted to the height of the molten metal liquid level in the mold to the control board 7. The control board 7 simultaneously sends a position control instruction for the lifting height to the linear actuator 17. When it is necessary to increase the opening degree of the nozzle stopper 18, the telescopic rod of the linear actuator 17 starts to retract, driving the left end of the fixed slot plate 14 and the lever plate 15 to move downward. The tension spring 162 of the elastic traction mechanism 16 compresses and retracts together with the steel wire rope 163. At this time, the fixed slot plate 14 and the lever plate 15 use the lever pin 12 as the lever fulcrum, causing the right end of the lever plate 15 to move upward, thereby driving the stopper 18 to move vertically upward, increasing the opening degree of the mold nozzle, and finally increasing the height of the molten metal liquid level in the mold. When it is necessary to reduce the opening degree of the nozzle stopper 18, just operate the above opposite action process. With the linkage cooperation of the eddy current sensor, the PLC in the central control room, the control board 7, the linear actuator 17, the fixed slot plate 14, the lever plate 15, the lever pin 12, and the stopper 18, the height of the molten metal liquid level in the mold can always be maintained within the reasonable range required by the process. The cooling process of the box body 1 and the cooling and temperature reduction process of the control board 7 are as follows: First, the high-pressure gas enters the intake end 82 of the heat dissipation row 8 through the bottom of the three-way valve 5 using the air pipe, and then is discharged from the exhaust end 83, forming a cooling cycle in the heat dissipation row body 81, thereby cooling and reducing the temperature of the control board 7. At the same time, the high-pressure gas is transported to the vortex tube body 41 of the vortex cooler 4 through the outlet at the rear side of the three-way valve 5. The cold gas generated in the vortex tube body 41 is transported to the inside of the box body 1 through the cold gas end 43 to cool and reduce the temperature of the inside of the box body 1. The hot gas generated in the vortex tube body 41 is discharged into the atmosphere through the hot gas end 44.

[0018] The beneficial effects of the present utility model: Through the linkage cooperation of the eddy current sensor, the PLC in the central control room, the control board, the linear actuator, the fixed slot plate, the lever plate, the lever pin, the elastic traction mechanism, and the stopper, the vertical flexibility of the stopper is improved, thereby improving the precise adaptive control of the opening degree of the mold nozzle, and realizing that the height of the molten metal liquid level in the mold is always maintained within the reasonable range required by the process. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 For the present utility model Figure 1 is a rear view of the vortex cooler and the three-way valve in the present utility model;

[0021] Figure 3 is a sectional view of the present utility model;

[0022] Figure 4 is a top view of the limit frame, fixed groove plate and U-shaped limit frame of the present utility model;

[0023] Figure 5 is a schematic structural diagram of the fixed groove plate and the lever plate of the present utility model in the upward viewing direction;

[0024] Figure 6 is a schematic structural diagram of the stopper rod of the present utility model;

[0025] Reference numerals in the figures: 1, box body; 2, opening and closing door; 3, rotating handle; 4, eddy current cooler; 41, eddy current tube body; 42, air inlet; 43, cold air end; 44, hot air end; 5, three-way air valve; 6, wire harness tube; 7, control board; 8, heat dissipation row; 81, heat dissipation row body; 82, air inlet end; 83, exhaust end; 9, fixing frame; 10, square groove; 101, square groove body; 102, through hole one; 103, through hole two; 11, limit frame; 111, limit vertical plate; 112, circular column; 12, lever pin shaft; 13, U-shaped limit frame; 14, fixed groove plate; 141, groove plate body; 142, pin hole; 143, locking hole; 144, locking screw; 15, lever plate; 151, lever plate body; 152, telescopic groove; 153, stopper rod mounting port; 154, hanging limit groove; 16, elastic traction mechanism; 161, base; 162, tension spring; 163, steel wire rope; 164, hook; 17, linear actuator; 18, stopper rod; 181, stopper rod body; 182, short screw; 183, hanging screw ring; 184, rotating rod; 185, hanging rod. Detailed implementation manners

[0026] The following further elaborates on the detailed implementation manners of the present utility model with reference to the accompanying drawings.

[0027] The present utility model provides a linkage control device for a stopper rod used in a mold nozzle:

[0028] As shown in Figure 1 or 3, the box body 1 is a hollow cube. The opening and closing door 2 is fixedly arranged on the left side surface of the box body 1 through a hinge. The rotating handle 3 is fixedly arranged at the middle position of the upper part of the opening and closing door 2. The rotating handle 3 is used to lock the opening and closing door 2 to the box body 1 by rotation. Through the setting of the box body 1, on the one hand, it provides an installation and fixing space for the eddy current cooler 4 and the square groove 10; on the other hand, it provides a protection function for the control board 7, the elastic traction mechanism 16, and the linear actuator 17, so that they are not eroded by high temperature.

[0029] As shown in Figure 1 、 2As shown in Figures 3 and 4, the eddy current cooler 4 is fixedly arranged at the front side position near the left end of the upper part of the box body 1. The eddy current cooler 4 is used to convey cooling gas into the box body 1 to cool it down; the three-way valve 5 is fixedly arranged at the corresponding right side position of the eddy current cooler 4. The three-way valve 5 is used to provide high-pressure air source for the eddy current cooler 4 and the heat dissipation row 8; the wire harness tube 6 is fixedly arranged at the corresponding rear side position of the eddy current cooler 4. Through the above arrangement of the eddy current cooler 4, an efficient cooling air source is provided for the box body 1, thereby reducing the temperature inside the box body 1 and effectively protecting the control board 7, the elastic traction mechanism 16 and the linear actuator 17. Through the above arrangement of the three-way valve 5, on the one hand, it can provide a high-pressure air source for the eddy current cooler 4, and on the other hand, it can provide cooling gas for cooling the heat dissipation row 8.

[0030] As Figure 1 shown, the square groove 10 is fixedly arranged at the middle position of the upper part of the box body 1. The square groove 10 is used for fixedly installing the lever pin shaft 12 and the U-shaped limit frame 13; the square groove 10 includes a square groove body 101. The square groove body 101 is a hollow cuboid structure with openings at the upper part and the right side. The through hole 102 is opened at the middle position near the left side of the bottom of the square groove body 101, and the through hole 103 is opened at the right side position of the through hole 102. The through hole 102 and the through hole 103 are through holes passing through the square groove body 101 and the box body 1; the aperture of the through hole 102 is smaller than the aperture of the through hole 103. Through the above arrangement of the square groove 10, a fixed installation platform is provided for the lever pin shaft 12 and the U-shaped limit frame 13. Through the above arrangement of the through hole 102, the steel wire rope 163 of the elastic traction mechanism 16 can pass through the box body 1 and the square groove 10 and be fixed to the bottom left end of the fixed groove plate 14. Through the cooperation of the base 161, the tension spring 162, the steel wire rope 163 and the hook 164, it is tightened, and at the same time, with the cooperation of the fulcrum of the lever pin shaft 12, the fixed groove plate 14 and the lever plate 15 are always kept in a flexible and balanced state. Through the above arrangement of the through hole 103, the telescopic rod of the linear actuator 17 can pass through the box body 1 and the square groove 10 and be fixed to the bottom of the fixed groove plate 14. Under the telescopic action of the linear actuator 17, the lever-type lifting action of the fixed groove plate 14 and the lever plate 15 is realized, so that the stopper rod 18 realizes the vertical up and down lifting action, and finally realizes the precise control of the opening degree of the mold nozzle.

[0031] As Figure 1 、 3, as shown in FIGS. 4, the limit frame 11 is fixedly arranged at the upper part near the left end of the square groove 10. The limit frame 11 is used to limit and fix the rising positions of the groove plate 14 and the lever plate 15. The limit frame 11 includes a limit vertical plate 111. The limit vertical plate 111 is fixedly arranged symmetrically in the front and back. The bottom of the limit vertical plate 111 is fixedly connected to the upper part of the box body 1. The circular column 112 is longitudinally fixedly arranged on the limit vertical plates 111 that are symmetrically arranged in the front and back. The main purpose of the above setting is to prevent the left end of the groove plate 14 and the lever plate 15 from rising too high, resulting in the separation of the stopper rod 18 hung on the lever plate 15.

[0032] As Figure 1 and Figure 3 shown, the lever pin shaft 12 is fixedly arranged at the upper part of the right end of the square groove 10. The lever pin shaft 12 is used to fix the lever plate 15 and make the lever plate 15 pivot up and down with the lever pin shaft 12 as the pivot point. The main purpose of the above setting is to use the setting of the lever pin shaft 12 to provide a pivot point for the lever-type lifting action of the groove plate 14 and the lever plate 15. Under the push of the telescopic action of the telescopic rod of the linear actuator 17, the lever-type lifting action of the groove plate 14 and the lever plate 15 is realized, thereby realizing the vertical lifting action of the stopper rod 18.

[0033] As Figure 1 , 3 , as shown in FIGS. 4, the U-shaped limit frame 13 is fixedly arranged at the upper parts of the front and rear ends of the lever pin shaft 12. The U-shaped limit frame 13 is used to limit the rising height of the lever plate 15. Through the setting of the U-shaped limit frame 13, when the groove plate 14 and the lever plate 15 are under the action of the retracting action of the linear actuator 17 and the lever plate 15 pivots up with the lever pin shaft 12 as the pivot point and the rising height is too high, the U-shaped limit frame 13 can be used to prevent the groove plate 14 and the lever plate 15 from rising too high and causing the separation of the stopper rod 18.

[0034] As Figure 3As shown, the elastic traction mechanism 16 is fixedly arranged at the middle position of the inner bottom of the box body 1. The elastic traction mechanism 16 is located on the right side of the fixing frame 9. The upper part of the elastic traction mechanism 16 passes through the box body 1 and the square groove 10 and is fixedly connected to the left bottom end of the fixing groove plate 14. The elastic traction mechanism 16 includes a base 161 which is fixedly arranged at the bottom of the box body 1. The lower traction hook of the tension spring 162 is buckled with the pin shaft on the base 161. A hook 164 is arranged at the bottom of the steel wire rope 163, and the hook 164 is buckled with the upper traction hook of the tension spring 162. The upper part of the steel wire rope 163 passes through the through hole 102 and is fixedly connected to the left bottom of the fixing groove plate body 141. Through the above arrangement of the elastic traction mechanism 16, by using the elastic action of the tension spring 162 and cooperating with the combined traction of the base 161, the steel wire rope 163 and the hook 164, the fixing groove plate 14 and the lever plate 15 are kept in a flexible suspended state with the lever pin shaft 12 as the fulcrum (under the action of the gravity of the stopper rod 18), improving the flexibility of the fixed groove plate 14 and the lever plate 15.

[0035] As Figure 3 and Figure 4 shown, the linear actuator 17 is fixedly arranged on the right side of the elastic traction mechanism 16. The upper telescopic rod of the linear actuator 17 passes through the box body 1 and the square groove 10 and is fixedly connected to the bottom of the fixing groove plate 14. Through the above arrangement of the linear actuator 17, under the combined automatic control cooperation of the mold eddy current sensor, the central control room PLC and the control board 7, the lifting of the position of the stopper rod 18 is realized through the telescopic movement of the telescopic rod of the linear actuator 17, thereby controlling the opening degree of the mold nozzle, and the molten metal liquid level in the mold can always be kept within the reasonable range required by the process.

[0036] As Figure 1 , 3 , 6 shown, the stopper rod 18 is hung at the right end of the lever plate 15. The stopper rod 18 corresponds up and down to the nozzle in the chute on one side of the upper part of the mold, and the stopper rod 18 is inserted into the nozzle of the mold. The stopper rod 18 includes a stopper rod body 181 which is cylindrical, and a conical plug body is arranged at the bottom of the stopper rod body 181. The short screw rod 182 is fixedly arranged at the upper center position of the hanging screw ring 183, and the stopper rod body 181 is fixedly arranged at the bottom center position of the hanging screw ring 183. The rotating rod 184 is longitudinally fixedly arranged at the upper position of the short screw rod 182, and the hanging rod 185 is longitudinally fixedly arranged at the outer right position of the hanging screw ring 183. The hanging screw ring 183 is placed at the center position of the stopper rod mounting opening 153, and the hanging rod 185 is placed in the hanging limit groove 154 of the stopper rod mounting opening 153.

[0037] With the above - mentioned arrangement of the stopper rod 18 and the hanging rod 185, by the cooperative action of the hanging rod 185 and the hanging limit groove 154 provided on the lever plate body 151, on the one hand, the stopper rod body 181 can be stably placed on the stopper rod mounting opening 153, and the hanging limit groove 154 plays a role in limiting and fixing the stopper rod body 181; on the other hand, due to the limiting contact of the hanging rod 185 in the hanging limit groove 154, under the action of the gravity of the stopper rod body 181, the stopper rod body 181 can always be kept vertical, thus improving the verticality of the correspondence between the stopper rod 18 and the mold nozzle up and down.

[0038] As Figure 5 shown, the lever plate body 151 is sleeved in the groove plate body 141, and the locking screw 144 passes through the telescopic groove 152 of the lever plate body 151 and is tightened and locked by a nut. The above - mentioned arrangement is mainly to facilitate the telescopic adjustment of the length of the lever plate body 151. The specific process is as follows: when it is necessary to increase the length of the lever plate body 151 (there is a deviation in the vertical corresponding position between the stopper rod 18 and the mold nozzle), first loosen the locking screw 144 and the nut at the bottom, then stretch and adjust the lever plate body 151 to the right. At this time, the locking screw 144 moves to the right along the telescopic groove 152 of the lever plate body 151. When the adjustment is in place, tighten the locking screw 144 and the nut at the bottom to lock and fix the groove plate 14 and the lever plate 15. If it is necessary to shorten the length of the lever plate body 151, just perform the above - mentioned operations in reverse.

[0039] As Figure 1-6As shown in the figure, the working process of the linkage control device for the stopper of the mold nozzle is as follows: First, the eddy current sensor installed on the mold is used to continuously track and detect the height of the molten metal level in the mold. The position signal obtained by the eddy current sensor is transmitted to the PLC in the central control room. Then, the PLC in the central control room sends a control signal for the stopper 18 that is suitable for the height of the molten metal level in the mold to the control board 7. The control board 7 simultaneously sends a position control instruction for the lifting height to the linear actuator 17. When it is necessary to increase the opening degree of the nozzle stopper 18, the telescopic rod of the linear actuator 17 starts to retract, driving the left end of the fixed slot plate 14 and the lever plate 15 to move downward. The tension spring 162 of the elastic traction mechanism 16 compresses and retracts together with the steel wire rope 163. At this time, the fixed slot plate 14 and the lever plate 15 use the lever pin 12 as the lever fulcrum, causing the right end of the lever plate 15 to move upward, thereby driving the stopper 18 to move vertically upward, increasing the opening degree of the mold nozzle, and finally increasing the height of the molten metal level in the mold. When it is necessary to reduce the opening degree of the nozzle stopper 18, just operate the above opposite action process. With the linkage cooperation of the eddy current sensor, the PLC in the central control room, the control board 7, the linear actuator 17, the fixed slot plate 14, the lever plate 15, the lever pin 12, and the stopper 18, the height of the molten metal level in the mold can always be maintained within the reasonable range required by the process. The cooling process of the box body 1 and the cooling and temperature reduction process of the control board 7 are as follows: First, high-pressure gas enters the intake end 82 of the heat sink 8 through the bottom of the three-way valve 5 using an air pipe, and then is discharged from the exhaust end 83, forming a cooling cycle in the heat sink body 81, thereby cooling and reducing the temperature of the control board 7. At the same time, the high-pressure gas is transported to the vortex tube body 41 of the vortex cooler 4 through the outlet at the rear side of the three-way valve 5. The cold gas generated in the vortex tube body 41 is transported to the inside of the box body 1 through the cold gas end 43 to cool and reduce the temperature of the inside of the box body 1. The hot gas generated in the vortex tube body 41 is discharged into the atmosphere through the hot gas end 44.

[0040] Various modifications to the above embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A linkage control device for a stopper used in a mold nozzle, comprising a box body, an opening and closing door, and a rotating handle. The box body is a hollow cube. The opening and closing door is fixedly arranged on the left side surface of the box body through a hinge. The rotating handle is fixedly arranged at the middle position of the upper part of the opening and closing door. The rotating handle is used to lock the opening and closing door to the box body by rotation; It is characterized in that: The eddy current cooler is fixedly arranged at the front side position near the left end of the upper part of the box body. The eddy current cooler is used to convey cooling gas into the box body to cool it down; the three-way air valve is fixedly arranged at the corresponding right side position of the eddy current cooler. The three-way air valve is used to provide high-pressure air source for the eddy current cooler and the heat sink; the wire harness pipe is fixedly arranged at the corresponding rear side position of the eddy current cooler. The wire harness pipe is used to regularly place the power supply wires and signal transmission lines provided for the control board; the control board is fixedly arranged at the left side position of the inner bottom of the box body. The control board is fixedly arranged on the left side surface of the heat sink. The heat sink is fixedly arranged on the left side of the fixing frame. The fixing frame is fixedly arranged on the inner bottom surface of the box body; the square groove is fixedly arranged at the middle position of the upper part of the box body. The square groove is used to fixedly install the lever pin shaft and the U-shaped limit frame; the limit frame is fixedly arranged at the position near the left end of the upper part of the square groove. The limit frame is used to limit and fix the rising position of the slot plate and the lever plate; the lever pin shaft is fixedly arranged at the upper position of the right end of the square groove. The lever pin shaft is used to fix the lever plate and make the lever plate take the lever pin shaft as the lifting fulcrum; the U-shaped limit frame is fixedly arranged at the upper positions of the front and rear ends of the lever pin shaft. The U-shaped limit frame is used to limit the rising height of the lever plate; the fixed slot plate is sleeved on the upper part of the left end of the lever plate. The telescopic cooperation between the fixed slot plate and the lever plate changes the transverse length of the lever plate; the lever plate is installed on the lever pin shaft. The lever plate is used to place and hang the stopper rod and realize the lifting action of the stopper rod with the lever pin shaft as the fulcrum; the elastic traction mechanism is fixedly arranged at the middle position of the inner bottom of the box body. The elastic traction mechanism is located at the right side position of the fixing frame. The upper part of the elastic traction mechanism passes through the box body and the square groove and is fixedly connected to the bottom of the left end of the fixed slot plate; the linear actuator is fixedly arranged at the right side position of the elastic traction mechanism. The upper telescopic rod of the linear actuator passes through the box body and the square groove and is fixedly connected to the bottom of the fixed slot plate; the stopper rod is hung at the right end of the lever plate. The stopper rod is vertically corresponding to the injection port in the chute on one side of the upper part of the mold. The stopper rod is inserted into the injection port of the mold.

2. The linkage control device for a stopper used in a mold nozzle according to claim 1, characterized in that: The eddy current cooler includes an eddy current tube body. The upper part of the eddy current tube body is the hot gas end. The lower part of the eddy current tube body is the cold gas end. The air inlet is arranged at the position near the lower part of the rear side of the eddy current tube body; the heat sink includes a heat sink body. The heat sink body is fixedly arranged at the left side position of the fixing frame. An air inlet end is opened at the middle position of the upper part of the heat sink body. An exhaust end is opened at the front side of the heat sink body.

3. The linkage control device for a stopper used in a mold nozzle according to claim 2, characterized in that: The air inlet is fixedly communicated with the rear side air hole of the three-way air valve through a trachea. The lower air outlet end of the three-way air valve extends into the interior of the box body. The lower air outlet end of the three-way air valve is fixedly communicated with the air inlet end of the heat sink body through a trachea. The exhaust end of the heat sink body is communicated with the outside through a trachea passing through the box body; the upper end of the three-way air valve is fixedly communicated with the air source through a trachea.

4. The linkage control device for the stopper used in the mold nozzle according to claim 1, wherein: The square groove includes a square groove body, which is a hollow cuboid structure with an upper part and an opening on the right side. The first through hole is opened at a position near the left side in the middle of the bottom of the square groove body, and the second through hole is opened at a position on the right side of the first through hole. The first through hole and the second through hole are through holes passing through the square groove body and the box body; the aperture of the first through hole is smaller than that of the second through hole.

5. The linkage control device of a stopper for a mold nozzle according to claim 1, characterized in that: The limiting frame includes limiting vertical plates, which are fixedly arranged symmetrically in the front and back. The bottom of the limiting vertical plates is fixedly connected to the upper part of the box body, and circular columns are longitudinally fixedly arranged on the limiting vertical plates symmetrically in the front and back.

6. The linkage control device for the stopper of the mold nozzle according to claim 1, characterized in that: The fixed groove plate includes a groove plate body, which is a hollow strip shape with a lower part and an opening at the right end. A pin hole is opened at a position near the lower part at the right end of the groove plate body, a locking hole is opened at the upper part of the groove plate body, the locking hole is located at the left side of the pin hole, and a locking screw is tightened and fixed in the locking hole.

7. The linkage control device for a stopper used in a mold nozzle according to claim 1, characterized in that: The lever plate includes a lever plate body, which is an L-shaped plate. A telescopic groove is opened at the middle position on the left side of the lever plate body, a plug rod mounting port is opened at the front side position of the lever plate body, the plug rod mounting port is a U-shaped opening, and a hanging and limiting groove is opened at the upper right position at the right end of the plug rod mounting port; the lever plate body is sleeved in the groove plate body, and the locking screw passes through the telescopic groove of the lever plate body and is tightened and locked by a nut.

8. The linkage control device for the stopper of the mold nozzle according to claim 1, characterized in that: The elastic traction mechanism includes a base, which is fixedly arranged at the bottom of the box body. The lower traction hook of the tension spring is buckled with the pin shaft on the base, the bottom of the steel wire rope is provided with a hook, the hook is buckled with the upper traction hook of the tension spring, and the upper part of the steel wire rope passes through the first through hole and is fixedly connected to the bottom left side of the fixed groove plate body.

9. The linkage control device of a stopper for a mold nozzle according to claim 1, characterized in that: The telescopic rod of the linear actuator passes through the second through hole 1 and is fixedly connected to the bottom of the fixed groove plate body; the linear actuator is fixedly connected to the control board through a signal wire, and the power supply of the linear actuator is fixedly connected to the control board through a wire; the control board is fixedly connected to the PLC in the central control room through a signal wire passing through the wire harness tube, and the power supply required by the control board passes through the wire harness tube through a power wire and is fixedly connected to the power supply.

10. The linkage control device for a stopper used in a mold nozzle according to claim 1, characterized in that: The plug rod includes a plug rod body, which is cylindrical, and a conical plug body is arranged at the bottom of the plug rod body; a short screw rod is fixedly arranged at the central position above the hanging screw ring, and the plug rod body is fixedly arranged at the central position at the bottom of the hanging screw ring; a rotating rod is longitudinally fixedly arranged at the upper position of the short screw rod, and a hanging rod is longitudinally fixedly arranged at the outer right position of the hanging screw ring; the hanging screw ring is placed at the central position of the plug rod mounting port, and the hanging rod is placed in the hanging and limiting groove of the plug rod mounting port.

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