Material strip pretreatment and tensioning device applied to continuous casting and rolling unit

Abstract

The utility model relates to a material belt pretreatment and tensioning device applied to a continuous casting and rolling unit, which comprises a rolling mill stand on the continuous casting and rolling unit, two groups of rollers which are opposite up and down are arranged in the rolling mill stand, a material nozzle opposite to the rollers is arranged on one side of the rolling mill stand, and an uncoiler is fixedly connected to the top of the rolling mill stand. A coiled copper strip is arranged on the uncoiler, and a pretreatment tensioning mechanism opposite to the copper strip is fixedly connected in the rolling mill rack between the uncoiler and the roller. According to the device, plate rolling pretreatment can be carried out on the head of the copper strip, the pretreated strip head can be attached to the outer wall of the roller, then the strip head is prevented from being in contact with a material nozzle, the material nozzle is protected, the downtime caused by material nozzle replacement can be shortened, and the production efficiency of continuous cast rolling of the composite plate strip is guaranteed.

Description

Technical Field:

[0001] The utility model relates to the technical field of a strip processing device for a rolling mill, and more specifically, to a strip pretreatment and tensioning device applied to a continuous casting and rolling unit. Background Art:

[0002] Aluminum strip continuous casting and rolling is a metal casting and rolling method in which liquid aluminum continuously passes through a rotating mold to form a blank while being rolled into a strip. The molten aluminum flows from a melting furnace to a nozzle through a liquid delivery channel, and the nozzle delivers it to the rollers on a rolling mill. After passing through the upper and lower opposing rollers, an aluminum plate or strip is formed. Similarly, by adding a structure for conveying copper strips to the above equipment, copper strips and molten aluminum can be input into the rollers simultaneously, and a composite strip can be rolled. The copper strip is wound in a roll on an uncoiler at the top of the rolling mill, and the copper strip is conveyed to the rollers through the uncoiler. Currently, during the initial uncoiling process of the copper strip, the head of the copper strip will touch the nozzle for conveying molten aluminum. Because the material of the nozzle is brittle, the contact between the copper strip and the nozzle will cause damage to the nozzle, and then it is necessary to stop the machine to replace the nozzle, affecting production; at the same time, the molten aluminum flowing out of the boiler will solidify due to the shutdown problem, and the solidified molten aluminum cannot be used, resulting in waste of raw materials. Content of the Utility Model:

[0003] The purpose of the utility model is to address the deficiencies of the existing technology and provide a strip pretreatment and tensioning device applied to a continuous casting and rolling unit, which can avoid touching the nozzle and reduce the occurrence of nozzle damage, save manufacturing costs, and ensure production efficiency at the same time.

[0004] A strip pretreatment and tensioning device applied to a continuous casting and rolling unit includes a rolling mill frame on the continuous casting and rolling unit. Two sets of upper and lower opposing rollers are provided inside the rolling mill frame. A nozzle opposite to the rollers is arranged on one side of the rolling mill frame. An uncoiler is fixedly connected to the top of the rolling mill frame, and a wound copper strip is provided on the uncoiler. A pretreatment and tensioning mechanism opposite to the copper strip is fixedly connected inside the rolling mill frame between the uncoiler and the rollers;

[0005] The pretreatment and tensioning mechanism includes an outer support frame in a "C" shape inserted and fixed inside the rolling mill frame. A pretreatment roll is inserted inside the outer support frame. A fixed rotation roll is inserted and fixed inside the pretreatment roll. Both ends of the fixed rotation roll extend out of the pretreatment roll and are connected to both ends of the outer support frame through bearings; One end of the fixed rotation roll extends out of the outer support frame to form a connecting shaft, and the connecting shaft is connected to the rotating shaft of a motor;

[0006] An "I"-shaped inner support frame is inserted into the outer support frame. A rotating roller opposite to the pretreatment roller is inserted into the inner support frame. Shafts are formed at both ends of the rotating roller and are connected to the inner support frame through bearings. The copper strip is clamped between the rotating roller and the pretreatment roller. An arc-shaped strip head is formed at the end of the copper strip. The strip head abuts against the outer wall of the roller and is located above the nozzle. A number of T-shaped tensioning shafts are inserted into the outer support frame. The ends of the tensioning shafts are fixedly connected to the inner support frame. Tensioning springs are sleeved on the tensioning shafts. The two ends of the tensioning springs respectively press against the inner support frame and the outer support frame. A pressing oil cylinder is fixedly connected to the outer support frame between the tensioning shafts. The piston rod of the pressing oil cylinder passes through the outer support frame and is fixedly connected to a pressing block opposite to the inner support frame.

[0007] Preferably, the roll diameters of the two groups of rollers in the rolling mill frame are equal, and the roll diameter of the rotating roller is larger than that of the pretreatment roller.

[0008] Preferably, a number of weight-reducing grooves with a sector-ring cross-section and penetrating both end faces of the rotating roller are formed in the rotating roller. The weight-reducing grooves are evenly distributed in a ring around the central axis of the rotating roller.

[0009] Preferably, a driven sprocket is inserted and fixed on the connecting shaft of the fixed rotating roller. The motor connected to the fixed rotating roller is fixed on the top of the rolling mill frame. A driving sprocket is inserted and fixed on the rotating shaft of the motor. An annular chain belt is sleeved and connected on the driving sprocket and the driven sprocket.

[0010] Preferably, a threading groove opposite to the copper strip is provided at the top of the rolling mill frame. The pretreatment tensioning mechanism is located above the front of the roller.

[0011] Preferably, a number of connecting bosses are respectively formed on the outer side walls on both sides of the outer support frame. The connecting bosses respectively abut against the inner side walls on both sides of the rolling mill frame. Threaded holes are formed in the connecting bosses. Bolts are inserted into the rolling mill frame. The ends of the bolts are respectively screwed into the threaded holes of the outer support frame.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. This device can perform coiling pretreatment on the head of the copper strip. The strip head after pretreatment can be attached to the outer wall of the roller, thereby avoiding contact with the nozzle, protecting the nozzle, reducing the downtime for replacing the nozzle, and ensuring the production efficiency of the continuous casting and rolling composite strip.

[0014] 2. This device can reduce the damage of the nozzle, and thus can save the cost of replacing the nozzle.

[0015] 3. This device includes a nozzle while reducing downtime, indirectly reducing the amount of wasted solidified aluminum liquid and the generation of waste. At the same time, it can provide a tensioning force for the copper strip during normal transportation of the copper strip. Description of the Drawings:

[0016] Figure 1 This is a schematic cross-sectional view of the present utility model in the side view direction;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the pre-treatment tensioning mechanism inside the present utility model;

[0018] Figure 3 This is a schematic top view structure diagram of the pre-treatment tensioning mechanism inside the present utility model.

[0019] In the figure: 1, rolling mill frame; 2, rolling roll; 3, nozzle; 4, uncoiler; 5, copper strip; 51, strip head; 6, pre-treatment tensioning mechanism; 61, outer support frame; 611, connecting boss; 612, threaded hole; 62, pre-treatment winding roll; 63, fixed rotating roll; 631, connecting shaft; 64, moving rotating roll; 641, weight reduction groove; 65, inner support frame; 66, tensioning shaft; 67, tensioning spring; 68, pressing oil cylinder; 69, pressing block. Specific implementation manner:

[0020] Embodiment: As shown in Figure 1 , 2 , and 3, a strip pre-treatment and tensioning device applied to a continuous casting and rolling unit includes a rolling mill frame 1 on the continuous casting and rolling unit. Two sets of upper and lower opposite rolling rolls 2 are arranged inside the rolling mill frame 1. A nozzle 3 opposite to the rolling rolls 2 is arranged on one side of the rolling mill frame 1. An uncoiler 4 is fixedly connected to the top of the rolling mill frame 1. A wound copper strip 5 is arranged on the uncoiler 4. A pre-treatment tensioning mechanism 6 opposite to the copper strip 5 is fixedly connected inside the rolling mill frame 1 between the uncoiler 4 and the rolling rolls 2;

[0021] The pre-treatment tensioning mechanism 6 includes an outer support frame 61 in a "C" shape inserted and fixed inside the rolling mill frame 1. A pre-treatment winding roll 62 is inserted inside the outer support frame 61. A fixed rotating roll 63 is inserted and fixed inside the pre-treatment winding roll 62. Both ends of the fixed rotating roll 63 extend out of the pre-treatment winding roll 62 and are connected to both ends of the outer support frame 61 through bearings; One end of the fixed rotating roll 63 extends out of the outer support frame 61 to form a connecting shaft 631, and the connecting shaft 631 is connected to the rotating shaft of a motor;

[0022] An inner support frame 65 in the shape of a "C" is inserted into the outer support frame 61. A rotating roller 64 opposite to the pretreatment roller 62 is inserted into the inner support frame 65. Shafts are formed at both ends of the rotating roller 64 and are connected to the inner support frame 65 through bearings. The copper strip 5 is clamped between the rotating roller 64 and the pretreatment roller 62. An arc-shaped strip head 51 is formed at the end of the copper strip 5. The strip head 51 abuts against the outer wall of the rolling roller 2 and is located above the material nozzle 3. A number of T-shaped tensioning shafts 66 are inserted into the outer support frame 61. The ends of the tensioning shafts 66 are fixedly connected to the inner support frame 65. Tensioning springs 67 are sleeved on the tensioning shafts 66. The two ends of the tensioning springs 67 respectively press against the inner support frame 65 and the outer support frame 61. A pressing oil cylinder 68 is fixedly connected to the outer support frame 61 between the tensioning shafts 66. The piston rod of the pressing oil cylinder 68 passes through the outer support frame 61 and is fixedly connected to a pressing block 69 opposite to the inner support frame 65. As Figure 1 shown, at this time, the piston rod of the pressing oil cylinder 68 is in the extended state, and the pressing block 69 abuts against the inner support frame 65. At the same time, the motor drives the pretreatment roller 62 to rotate. When the pretreatment roller 62 and the rotating roller 64 are used as a coiling mechanism, the end of the copper strip 5 is wound into an arc-shaped strip head 51, which is convenient for the strip head 51 to fit on the outer wall of the rolling roller 2 and is convenient for the material nozzle to collide.

[0023] When the copper strip 5 is normally conveyed, the piston rod of the pressing oil cylinder 68 contracts. The inner support frame 65 is elastically supported by the tensioning spring 67. At the same time, the motor does not work. The copper strip 5 is elastically clamped between the pretreatment roller 62 and the rotating roller 64, providing a tensioning force for the copper strip 5.

[0024] The roller diameters of the two groups of rolling rollers 2 in the rolling mill frame 1 are equal. The roller diameter of the rotating roller 64 is larger than that of the pretreatment roller 62, so that the head of the copper strip 5 can be wound into a strip head 51 that can cooperate with the outer wall of the rolling roller 2.

[0025] A number of weight reduction grooves 641 with a fan-shaped ring cross-section and penetrating both end faces of the rotating roller 64 are formed in the rotating roller 64. The weight reduction grooves 641 are evenly distributed in a ring around the central axis of the rotating roller 64 to reduce the weight of the pretreatment tensioning mechanism 6 through the weight reduction grooves 641.

[0026] A driven sprocket is inserted and fixed on the connecting shaft 631 of the fixed rotating roller 63. The motor connected to the fixed rotating roller 63 is fixed on the top of the rolling mill frame 1. A driving sprocket is inserted and fixed on the rotating shaft of the motor. An annular chain belt is sleeved and connected on the driving sprocket and the driven sprocket, which is convenient for the installation and setting of the motor.

[0027] A threading groove opposite to the copper strip 5 is provided at the top of the rolling mill frame 1. The pretreatment tensioning mechanism 6 is located above the front of the rolling roller 2.

[0028] On the outer side walls on both sides of the outer support frame 61, a number of connecting bosses 611 are respectively formed. The connecting bosses 611 respectively abut against the inner side walls on both sides of the rolling mill frame 1, and threaded holes 612 are formed on the connecting bosses 611; bolts are inserted into the rolling mill frame 1, and the ends of the bolts are respectively screwed into the threaded holes 612 of the outer support frame 61, and the connecting bosses 611 can leave installation space for the sprocket drive structure of the motor.

[0029] Working principle: The utility model is a strip pretreatment and tension retention device for a continuous casting and rolling unit. The technical solution is to add a pretreatment tensioning mechanism 6, and the pretreatment tensioning mechanism 6 has two switchable working modes;

[0030] One working mode is the coiling operation. During the coiling operation, the position of the moving rotating roller 64 is positioned by the pressing oil cylinder 68, and at the same time, the motor drives the pretreatment coiling roller 62 to rotate. When the head of the copper strip 5 enters between the moving rotating roller 64 and the pretreatment coiling roller 62, the head 51 can be coiled into an arc shape, so that when the head 51 falls onto the rolling roller 2, it can fit on the outer wall of the rolling roller 2 and avoid touching the material nozzle 3;

[0031] The other working mode is the tensioning operation. During the continuous conveying of the copper strip, the motor stops working, and the piston rod of the pressing oil cylinder 68 resets. Then, the moving rotating roller 64 can move, but under the action of the tension spring 67, it can cooperate with the pretreatment coiling roller 62 to elastically clamp the copper strip 5 and provide a tensioning force for the copper strip 5.

[0032] The described embodiments are used to illustrate the utility model by way of example, rather than to limit the utility model. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the utility model. Therefore, the scope of the rights protection of the utility model should be as listed in the claims of the utility model.

Claims

1. A strip pretreatment and tensioning device for a continuous casting and rolling mill, comprising a rolling mill frame (1) on the continuous casting and rolling mill, wherein two groups of rollers (2) facing each other are arranged in the rolling mill frame (1), a material nozzle (3) facing the rollers (2) is arranged on one side of the rolling mill frame (1), an unwinder (4) is fixedly connected to the top of the rolling mill frame (1), and a wound copper strip (5) is arranged on the unwinder (4), characterized in that: Inside the rolling mill housing (1) between the decoiler (4) and the rolling rolls (2), a pre-treatment tensioning mechanism (6) opposite to the copper strip (5) is fixedly connected; The pre-treatment tensioning mechanism (6) includes an outer support frame (61) in a "C" shape inserted and fixed inside the rolling mill housing (1). Inside the outer support frame (61), a pre-treatment winding roll (62) is inserted. Inside the pre-treatment winding roll (62), a fixed-rotation roll (63) is inserted and fixed. The two ends of the fixed-rotation roll (63) extend out of the pre-treatment winding roll (62) and are connected to the two ends of the outer support frame (61) through bearings; One end of the fixed-rotation roll (63) extends out of the outer support frame (61) to form a connecting shaft (631), and the connecting shaft (631) is connected to the rotating shaft of the motor; Inside the outer support frame (61), a "C" shaped inner support frame (65) is inserted. Inside the inner support frame (65), a moving rotation roll (64) opposite to the pre-treatment winding roll (62) is inserted. The two ends of the moving rotation roll (64) are formed with support shafts and are connected to the inner support frame (65) through bearings; The copper strip (5) is clamped between the moving rotation roll (64) and the pre-treatment winding roll (62). The end of the copper strip (5) is formed with an arc-shaped strip head (51), and the strip head (51) abuts against the outer wall of the rolling roll (2) and is located above the material nozzle (3); A number of T-shaped tensioning shafts (66) are inserted into the outer support frame (61). The ends of the tensioning shafts (66) are fixedly connected to the inner support frame (65). Tensioning springs (67) are sleeved on the tensioning shafts (66). The two ends of the tensioning springs (67) are respectively pressed against the inner support frame (65) and the outer support frame (61). A pressing oil cylinder (68) is fixedly connected to the outer support frame (61) between the tensioning shafts (66). The piston rod of the pressing oil cylinder (68) passes through the outer support frame (61) and is fixedly connected to a pressing block (69) opposite to the inner support frame (65).

2. The strip pretreatment and tensioning device for a continuous casting and rolling mill according to claim 1, characterized in that: The roll diameters of the two groups of rolling rolls (2) inside the rolling mill housing (1) are equal, and the roll diameter of the moving rotation roll (64) is larger than that of the pre-treatment winding roll (62).

3. The strip pretreatment and tensioning device for a continuous casting and rolling mill according to claim 2, characterized in that: A number of weight reduction grooves (641) with a fan-shaped ring cross-section and penetrating through the two end faces of the moving rotation roll (64) are formed inside the moving rotation roll (64), and the weight reduction grooves (641) are evenly distributed in a ring shape around the central axis of the moving rotation roll (64).

4. The strip pretreatment and tensioning device for a continuous casting and rolling mill according to claim 1, characterized in that: A driven sprocket is inserted and fixed on the connecting shaft (631) of the fixed-rotation roll (63). The motor connected to the fixed-rotation roll (63) is fixed on the top of the rolling mill housing (1). A driving sprocket is inserted and fixed on the rotating shaft of the motor. An annular chain belt is sleeved and connected on the driving sprocket and the driven sprocket.

5. The strip pretreatment and tensioning device for a continuous casting and rolling mill according to claim 1, characterized in that: A threading groove opposite to the copper strip (5) is provided on the top of the rolling mill housing (1), and the pre-treatment tensioning mechanism (6) is located above the front of the rolling rolls (2).

6. The strip pretreatment and tensioning device for a continuous casting and rolling mill according to claim 4, characterized in that: A number of connecting bosses (611) are respectively formed on the outer side walls on both sides of the outer support frame (61). The connecting bosses (611) respectively abut against the inner side walls on both sides of the rolling mill housing (1). Threaded holes (612) are formed on the connecting bosses (611); Bolts are inserted into the rolling mill housing (1), and the ends of the bolts are respectively screwed into the threaded holes (612) of the outer support frame (61).

Images