Door piece rolling mill for metal roller shutter door production

Abstract

The invention relates to the field of metal rolling equipment, in particular to a door sheet rolling mill for producing a metal roller shutter door, which is characterized in that heat on the surface of a molding strip is quickly taken away through negative pressure airflow under the condition that a heat dissipation device is not in contact with a roller through a sleeve cover arranged on the outer side of the molding strip of the roller in a sleeving manner and a blowing cylinder communicated with the sleeve cover through a heat exchange pipe; meanwhile, spray with higher dispersity is generated through a spray head mounted in a sleeve cover to be in contact with the surface of a shaping strip, more heat on the surface of the shaping strip is taken away by evaporation and heat absorption, and hot steam is condensed and refluxed by a heat exchange pipe, so that water is recycled, no water stain is left on the surface of the roller, the water resource is saved, and the heat dissipation effect is improved at the same time; the problems that when a traditional rolling mill adopts water-cooling heat dissipation, water source consumption is large, and generated high-temperature steam accelerates rusting of a rolling mill housing and influences the stability of a roller are solved.

Description

Technical Field

[0001] The invention relates to a rolling mill, in particular to a door sheet rolling mill for producing metal rolling shutter doors, which is applied to the field of metal rolling equipment. Background Art

[0002] The production of metal sheets for rolling doors often uses a multi-roller rolling mill, which is mainly composed of rollers, frames, transmission systems and hydraulic systems. The rollers are the core components, which press the metal sheets thin and shape them into the desired shape through multiple rolling. The frames firmly support the rollers and the transmission system to ensure the stability and accuracy of the rolling process. The transmission system consists of a motor, a drive shaft, a reducer, etc., which is responsible for converting electrical energy into mechanical energy and driving the rollers to rotate. The hydraulic system accurately controls the movement and pressure of the rollers.

[0003] When a multi-roller rolling mill continuously produces metal sheets for rolling shutter doors, the high-frequency friction between the rollers and the steel sheets causes rapid accumulation of surface heat. Over time, this heat accumulation not only accelerates the wear and thermal deformation of the rollers, but also directly affects the extrusion quality of the steel sheets. Since the stability of the rollers is a key factor in ensuring the quality of the finished product, how to effectively dissipate heat becomes a major challenge.

[0004] Traditional rolling mill cooling methods mostly use non-contact air cooling or water cooling, but each has its limitations. Although air cooling is easy to implement, its cooling effect is limited in open spaces and it is difficult to flexibly adjust according to actual heat dissipation needs, which limits the improvement of heat dissipation efficiency. Although water cooling has a significant cooling effect, its high water consumption not only increases operating costs, but may also generate high-temperature steam inside the rolling mill. These steams not only corrode the rolling mill arch and reduce the life of the equipment, but may also affect the stability of the rolls, indirectly leading to a decrease in rolling accuracy, further aggravating the instability of the rolls and the fluctuation of rolling quality. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the open space air cooling method and the spray water cooling heat dissipation method of the existing rolling mill cannot meet the stable heat dissipation requirements of the rolling mill rolls.

[0006] In order to solve the above problems, the present invention provides a door sheet rolling mill for the production of metal rolling shutter doors, comprising a frame seat, wherein the frame seat is provided with a plurality of pairs of rollers distributed up and down along the traveling direction of the steel strip, and the rollers are provided with shaping strips for extruding the steel strip; a heat dissipation device for cooling the shaping strip is installed on the frame seat, and the heat dissipation device comprises a sleeve mounted on the upper part of the shaping strip, a semicircular groove adapted to the shaping strip is provided in the sleeve, a suction capillary is connected to the upper end of the semicircular groove, a heat exchange tube is connected to the upper end of the suction capillary, and a blowing tube is provided on the outer side of the heat exchange tube. An axial flow fan is provided below the heat exchange tube, and a water collecting chamber is provided below the axial flow fan. A waterproof and breathable disk is provided between the water collecting chamber and the axial flow fan, and the water collecting chamber is connected with the water outlet end of the heat exchange tube through a return pipe. A sliding groove connected with the semicircular groove is provided on the inner side of the cover, and a spray head is installed in the sliding groove, and the spray head is connected with the water collecting chamber through a water suction pipe. An infrared temperature sensor facing the shaping strip is nested at the front end of the cover, and the infrared temperature sensor is electrically connected with a controller, and the axial flow fan and the spray head are both electrically connected with the controller.

[0007] In the above-mentioned door sheet rolling mill for the production of metal rolling shutter doors, non-contact and residue-free heat dissipation and cooling of the rollers are achieved by connecting a sleeve with a spray tube and a spray head installed in the sleeve.

[0008] As a further improvement of the present invention, the upper end of the cover is connected to a longitudinal screw module, the upper end of the longitudinal screw module is fixedly connected to a lifting frame, the lifting frame is slidably connected to a sliding frame, the sliding frame is fixedly connected to an electric telescopic cylinder for driving the lifting frame to move up and down, and the end of the sliding frame is connected to a transverse screw module installed on the frame seat.

[0009] As a further improvement of the present invention, an infrared distance sensor arranged opposite to the shaping strip is nested on the side of the cover away from the infrared temperature sensor, the infrared distance sensor is electrically connected to the controller, and the controller is electrically connected to a buzzer light.

[0010] As a further improvement of the present invention, the spray head is fixedly connected to a movable frame nested in the sliding groove, the movable frame is fixedly connected to a sliding bar extending to the inner side of the sleeve cover, the sliding bar is clamped with an eccentric disk, the eccentric disk is connected to a telescopic shaft extending into the blowing tube, and the telescopic shaft is connected to the rotor shaft of the axial flow fan through a transmission gear set.

[0011] As a further improvement of the present invention, the cover is in a rectangular block structure, the semicircular groove is an annular groove, and the suction tube is connected to the middle position of the semicircular groove.

[0012] As a further improvement of the present invention, the blowing tube is a vertical tube with a rectangular cylindrical structure on the upper part and a cylindrical structure on the lower part. The heat exchange tube is horizontally bent and nested in the upper rectangular cylindrical structure. The inner diameter of the heat exchange tube is larger than the inner diameter of the suction tube, and the inner diameter of the reflux tube is larger than the inner diameter of the heat exchange tube.

[0013] As a further improvement of the present invention, the spray head is a cylindrical structure with a ceramic atomizing plate embedded in the lower part, the water inlet side of the upper end of the ceramic atomizing plate is abutted with a water absorption core, the ceramic atomizing plate and the shaping strip are arranged opposite to each other, and the water absorption core passes through the water absorption pipe and extends into the water collecting chamber.

[0014] As a further improvement of the present invention, the number of the sleeves is equal to the number of the shaping strips.

[0015] As a further improvement of the present invention, the sliding bar is in a horizontal T-shape, and a vertical sliding groove is provided on its outer end surface, and an eccentric column nested in the vertical sliding groove is provided at the outer end of the eccentric disk.

[0016] In summary, the present invention uses a sleeve mounted on the outside of the roller shaping strip and a blowing tube connected to the sleeve through a heat exchange tube, so that the heat on the surface of the shaping strip can be quickly removed by negative pressure airflow under the condition that the heat dissipation device and the roller are not in contact. At the same time, a spray head installed in the sleeve is used to generate a spray with a high degree of dispersion to contact the surface of the shaping strip, and more heat on the surface of the shaping strip is removed by evaporation and heat absorption, and the heat exchange tube is used to condense and reflux the hot steam to achieve water recycling, so that there is no water stain on the surface of the roller, which saves water resources and improves the heat dissipation effect. The problem of large water consumption when traditional rolling mills use water cooling for heat dissipation, and the high-temperature steam generated accelerates the rust of the rolling mill arch and affects the stability of the roller is overcome. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the heat dissipation device in this application;

[0019] Figure 3 for Figure 2 A schematic diagram of a transverse cross-sectional structure;

[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 5 It is a schematic diagram of the pipeline connection between the hood and the blowing tube in this application;

[0022] Figure 6 This is a schematic diagram of the structure of the cover in this application when viewed from above;

[0023] Figure 7 Schematic diagram of the flow of air flow and water spray during heat dissipation.

[0024] Description of the numbers in the figure:

[0025] 1. Frame seat; 2. Roller; 201. Shaping strip; 3. Heat dissipation device; 4. Cover; 401. Semicircular groove; 402. Sliding groove; 5. Suction capillary; 6. Blowing tube; 601. Water collecting chamber; 7. Heat exchange tube; 8. Return pipe; 9. Waterproof breathable plate; 10. Axial flow fan; 11. Spray head; 12. Ceramic atomizing sheet; 13. Water absorption pipe; 1301. Water absorption core; 14. Moving frame; 15. Sliding strip; 16. Eccentric plate; 17. Telescopic shaft; 18. Transmission gear set; 19. Infrared temperature sensor; 20. Infrared distance sensor; 21. Longitudinal screw module; 22. Lifting frame; 23. Sliding frame; 24. Electric telescopic cylinder; 25. Controller; 26. Buzzer light; 27. Horizontal screw module. DETAILED DESCRIPTION

[0026] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0027] The first implementation method:

[0028] Figure 1-7 A door sheet rolling mill for the production of metal rolling shutter doors is shown, comprising a frame base 1, wherein the frame base 1 is provided with a plurality of pairs of rollers 2 distributed up and down along the traveling direction of the steel strip, and the rollers 2 are provided with shaping strips 201 for squeezing the steel strip; a heat dissipation device 3 for cooling the shaping strips 201 is installed on the frame base 1, and the heat dissipation device 3 comprises a sleeve 4 sleeved on the upper part of the shaping strips 201, and a semicircular groove 401 adapted to the shaping strips 201 is provided in the sleeve 4, and a suction capillary 5 is connected to the upper end of the semicircular groove 401, and a heat exchange tube 7 is connected to the upper end of the suction capillary 5, and a blowing tube 6 is sleeved on the outer side of the heat exchange tube 7, and the blowing tube 6 is provided with an axial flow fan 10 below the heat exchange tube 7, and the blowing tube 6 is provided with a water collecting chamber 601 below the axial flow fan 10, and a waterproof and breathable disk 9 is provided between the water collecting chamber 601 and the axial flow fan 10, and the water collecting chamber 601 is connected to the water outlet end of the heat exchange tube 7 through a return pipe 8;

[0029] A sliding groove 402 connected to the semicircular groove 401 is provided on the inner side of the cover 4, and a spray head 11 is installed in the sliding groove 402, and the spray head 11 is connected to the water collecting chamber 601 through a water suction pipe 13; an infrared temperature sensor 19 facing the shaping strip 201 is nested at the front end of the cover 4, and the infrared temperature sensor 19 is electrically connected to the controller 25, and the axial flow fan 10 and the spray head 11 are both electrically connected to the controller 25.

[0030] For details, please refer to Figure 7When the door sheet rolling mill for the production of metal rolling doors is working, the controller 25 starts the infrared temperature sensor 19 to monitor the temperature of the shaping strip 201. When the shaping strip 201 heats up due to the extrusion and friction with the steel strip, when the first temperature threshold is reached, the controller 25 starts the axial flow fan 10. The axial flow fan 10 blows the airflow in the blowing tube 6 to the heat exchange tube 7 and sprays it. A negative pressure is generated in the water collecting chamber 601. The water collecting chamber 601 sucks the airflow in the heat exchange tube 7 through the return pipe 8. The heat exchange tube 7 performs negative pressure suction on the airflow in the semicircular groove 401 through the suction capillary 5. The airflow in the external air enters the semicircular groove 401 through the gap between the cover 4 and the roller 2, so that the external airflow enters through the semicircular groove 401 and is finally ejected from the blowing tube 6, realizing the negative pressure suction and one-way external discharge of the airflow.

[0031] When the infrared temperature sensor 19 detects that the temperature of the shaping strip 201 reaches the second temperature threshold, that is, when air cooling alone cannot dissipate the heat of the shaping strip 201 in time, the controller 25 starts the spray head 11, and the spray head 11 absorbs water in the water collecting chamber 601 through the water absorption pipe 13 and sprays it out in atomization. The spray is sprayed by the spray head 11 onto the surface of the shaping strip 201. The shaping strip 201 causes the spray to evaporate further, taking away more heat from the surface of the shaping strip 201, and forming a water-containing airflow under the action of the airflow. The water-containing airflow enters the heat exchange tube 7 through the suction tube 5. The heat exchange tube 7 has a large contact area with the external air and has good thermal conductivity. The water-containing airflow condenses in the heat exchange tube 7, and the condensed water and the dehydrated airflow enter the water collecting chamber 601 through the return pipe 8 and are separated on the surface of the waterproof and breathable plate 9. The dehydrated airflow is discharged from the upper part of the blowing tube 6 under the action of the axial flow fan 10, and the condensed water accumulates in the water collecting chamber 601 for use by the spray head 11.

[0032] Compared with the traditional rolling door metal sheet rolling mill, the present invention uses a cover 4 that is sleeved on the outside of the shaping strip 201 of the roller 2 and a blowing tube 6 that is connected to the cover 4 through a heat exchange tube 7. Under the condition that the heat dissipation device 3 and the roller 2 are not in contact, the surface heat of the shaping strip 201 is quickly removed by negative pressure airflow; at the same time, a spray head 11 installed in the cover 4 is used to generate a spray with a high degree of dispersion to contact the surface of the shaping strip 201, and more heat from the surface of the shaping strip 201 is removed by evaporation and absorption of heat, and the heat exchange tube 7 is used to condense and reflux the hot steam, so as to realize the recycling of water, save water resources and improve the heat dissipation effect, thereby overcoming the problems of high water consumption when the traditional rolling mill adopts water cooling for heat dissipation and the high-temperature steam generated that accelerates the rusting of the rolling mill arch.

[0033] See also Figure 2 and Figure 6 The cover 4 is a rectangular block structure, the semicircular groove 401 is an annular groove, and the suction tube 5 is connected to the middle position of the semicircular groove 401.

[0034] Specifically, when the semicircular groove 401 draws in external airflow, the external airflow has a larger contact area and contact possibility with the shaping strip 201, thereby improving the effect of negative pressure gas quickly removing heat from the surface of the shaping strip 201.

[0035] See also Figure 3 The blowing tube 6 is a vertical tube with a rectangular cylindrical structure at the upper part and a cylindrical structure at the lower part. The heat exchange tube 7 is horizontally bent and nested in the upper rectangular cylindrical structure. The inner diameter of the heat exchange tube 7 is larger than the inner diameter of the suction capillary 5, and the inner diameter of the reflux tube 8 is larger than the inner diameter of the heat exchange tube 7.

[0036] Specifically, the heat exchange tube 7 has a larger heat exchange area. At the same time, when the high-temperature water-containing gas enters the heat exchange tube 7 from the suction capillary 5, the space becomes larger instantly and the gas pressure drops suddenly, making it easier for the high-temperature water-containing gas to condense and precipitate.

[0037] See also Figure 4 The spray head 11 is a cylindrical structure with a ceramic atomizing sheet 12 embedded in the lower part. The water inlet side of the upper end of the ceramic atomizing sheet 12 is abutted with a water absorption core 1301. The ceramic atomizing sheet 12 is arranged opposite to the shaping strip 201. The water absorption core 1301 passes through the water absorption pipe 13 and extends into the water collecting chamber 601.

[0038] Specifically, the water absorption core 1301 is used to transport the condensed water to the ceramic atomizing plate 12 and spray it out in atomized form.

[0039] See also Figure 4 The spray head 11 is fixedly connected to a movable frame 14 nested in the sliding groove 402, the movable frame 14 is fixedly connected to a sliding bar 15 extending to the inner side of the sleeve 4, the sliding bar 15 is clamped with an eccentric disk 16, the eccentric disk 16 is connected to a telescopic shaft 17 extending into the blowing tube 6, and the telescopic shaft 17 is connected to the rotor shaft of the axial flow fan 10 through a transmission gear set 18 for transmission.

[0040] Specifically, the rotor shaft of the axial flow fan 10 drives the eccentric disk 16 to rotate through the transmission gear set 18 and the telescopic shaft 17. The eccentric disk 16 drives the movable frame 14 to reciprocate in the sliding groove 402 through the sliding bar 15. The movable frame 14 drives the spray head 11 thereon to reciprocate laterally, so that the water mist sprayed by the spray head 11 contacts the arc surface of the shaping strip 201 more evenly and fully, thereby improving the evaporation heat absorption effect.

[0041] It should be noted that the sliding bar 15 is in a horizontal T-shape, and a vertical sliding groove is provided on its outer end surface, and an eccentric column nested in the vertical sliding groove is provided on the outer end of the eccentric disc 16 .

[0042] Specifically, the lateral reciprocating movement of the movable frame 14 is achieved through the cooperation of the eccentric disk 16 and the sliding bar 15 .

[0043] In this embodiment, the number of the covers 4 is equal to the number of the shaping strips 201 .

[0044] Specifically, in a pair of vertically arranged rollers 2, the roller 2 located on the upper side generally contains two symmetrically arranged shaping strips 201, and the roller 2 located on the lower side generally contains a shaping strip 201 located at the center, so as to realize the sleeve arrangement and cooling of different shaping strips 201.

[0045] Second implementation method:

[0046] Figure 1-3 and Figure 5-6 A door sheet rolling mill for the production of metal rolling shutter doors is shown. On the basis of the first embodiment, a longitudinal screw module 21 is connected to the upper end of a cover 4, a lifting frame 22 is fixedly connected to the upper end of the longitudinal screw module 21, the lifting frame 22 is slidably connected to a sliding frame 23, an electric telescopic cylinder 24 for driving the lifting frame 22 to move up and down is fixedly connected to the sliding frame 23, and a transverse screw module 27 installed on the frame seat 1 is connected to the end of the sliding frame 23.

[0047] Specifically, the heat dissipation device 3 is transferred between different rollers 2 through the longitudinal screw module 21, the electric telescopic cylinder 24 and the transverse screw module 27, so that the upper rollers 2 of the door sheet rolling mill for the production of metal rolling doors containing multiple pairs of rollers 2 share a set of heat dissipation devices 3, thereby realizing temperature measurement and cooling of multiple upper rollers 2.

[0048] See also Figure 5 and Figure 6 An infrared distance sensor 20 arranged opposite to the shaping strip 201 is nested on the side of the cover 4 away from the infrared temperature sensor 19 . The infrared distance sensor 20 is electrically connected to a controller 25 , and the controller 25 is electrically connected to a buzzer light 26 .

[0049] Specifically, the infrared distance sensor 20 is used to measure the distance between the shaping strip 201 and itself. When the shaping strip 201 is partially deformed due to wear or heat, the value of the infrared distance sensor 20 will fluctuate. When the deformation value reaches the set distance threshold, the controller 25 starts the buzzer light 26 to warn the operator that the roller 2 needs to be replaced. By cooperating with the longitudinal screw module 21, the electric telescopic cylinder 24 and the transverse screw module 27, the deformation amount of each roller 2 can be detected. It has a high detection efficiency and is convenient for quickly locating the deformed roller 2 for timely replacement.

[0050] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A door sheet rolling mill for the production of metal rolling doors, characterized in that: The invention comprises a frame seat (1), wherein the frame seat (1) is provided with a plurality of pairs of rollers (2) distributed up and down along the traveling direction of the steel strip, and the rollers (2) are provided with shaping strips (201) for extruding the steel strip; the frame seat (1) is provided with a heat dissipation device (3) for cooling the shaping strips (201), and the heat dissipation device (3) comprises a cover (4) sleeved on the upper part of the shaping strips (201), and a semicircular groove (401) adapted to the shaping strips (201) is provided in the cover (4), and the semicircular groove (401) is provided with a heat dissipation device (3) for cooling the shaping strips (201). The upper end is connected with a suction capillary (5), the upper end of the suction capillary (5) is connected with a heat exchange tube (7), a blowing tube (6) is sleeved on the outer side of the heat exchange tube (7), the blowing tube (6) is located below the heat exchange tube (7) and an axial flow fan (10) is provided, the blowing tube (6) is located below the axial flow fan (10) and a water collecting chamber (601) is provided, a waterproof and breathable disk (9) is provided between the water collecting chamber (601) and the axial flow fan (10), and the water collecting chamber (601) is connected with the water outlet end of the heat exchange tube (7) through a return pipe (8); The inner side of the cover (4) is provided with a sliding groove (402) connected to the semicircular groove (401), and a spray head (11) is installed in the sliding groove (402), and the spray head (11) is connected to the water collecting chamber (601) through a water suction pipe (13); the front end of the cover (4) is embedded with an infrared temperature sensor (19) facing the shaping strip (201), and the infrared temperature sensor (19) is electrically connected to the controller (25), and the axial flow fan (10) and the spray head (11) are both electrically connected to the controller (25).

2. A door sheet rolling mill for metal rolling door production according to claim 1, characterized in that: The upper end of the cover (4) is connected to a longitudinal screw module (21), the upper end of the longitudinal screw module (21) is fixedly connected to a lifting frame (22), the lifting frame (22) is slidably connected to a sliding frame (23), the sliding frame (23) is fixedly connected to an electric telescopic cylinder (24) for driving the lifting frame (22) to move up and down, and the end of the sliding frame (23) is connected to a transverse screw module (27) installed on the frame seat (1).

3. The door sheet rolling mill for metal rolling door production according to claim 2, characterized in that: An infrared distance sensor (20) arranged opposite to the shaping strip (201) is embedded in the cover (4) on the side away from the infrared temperature sensor (19); the infrared distance sensor (20) is electrically connected to the controller (25); and the controller (25) is electrically connected to a buzzer light (26).

4. The door sheet rolling mill for metal rolling door production according to claim 3, characterized in that: The spray head (11) is fixedly connected to a movable frame (14) nested in the sliding groove (402); the movable frame (14) is fixedly connected to a sliding bar (15) extending to the inner side of the sleeve cover (4); the sliding bar (15) is clamped with an eccentric disk (16); the eccentric disk (16) is connected to a telescopic shaft (17) extending into the spray tube (6); the telescopic shaft (17) is connected to the rotor shaft of the axial flow fan (10) through a transmission gear set (18).

5. The door sheet rolling mill for metal rolling door production according to claim 1, characterized in that: The cover (4) is in a rectangular block structure, the semicircular groove (401) is an annular groove, and the suction tube (5) is connected to the middle position of the semicircular groove (401).

6. The door sheet rolling mill for metal rolling door production according to claim 1, characterized in that: The blowing tube (6) is a vertical tube with a rectangular cylindrical structure at the top and a cylindrical structure at the bottom. The heat exchange tube (7) is horizontally bent and nested in the upper rectangular cylindrical structure. The inner diameter of the heat exchange tube (7) is larger than the inner diameter of the suction capillary (5), and the inner diameter of the return tube (8) is larger than the inner diameter of the heat exchange tube (7).

7. The door sheet rolling mill for metal rolling door production according to claim 1, characterized in that: The spray head (11) is a cylindrical structure and has a ceramic atomizing sheet (12) embedded in the lower part. The water inlet side of the upper end of the ceramic atomizing sheet (12) is abutted against a water absorption core (1301). The ceramic atomizing sheet (12) and the shaping strip (201) are arranged opposite to each other. The water absorption core (1301) passes through the water absorption pipe (13) and extends into the water collection chamber (601).

8. The door sheet rolling mill for metal rolling door production according to claim 1, characterized in that: The number of the sleeves (4) is equal to the number of the shaping strips (201).

9. The door sheet rolling mill for metal rolling door production according to claim 4, characterized in that: The sliding bar (15) is in a horizontal T-shape, and a vertical sliding groove is provided on its outer end surface. An eccentric column is provided at the outer end of the eccentric disc (16) and is nested in the vertical sliding groove.

Images