A pneumatic roll nip adjusting device for bar rolling rolls and roll nip adjusting equipment

Abstract

The embodiment of the present invention provides a pneumatic press-release roll gap device for bar rolls and a roll gap adjustment device, which relates to the technical field of rolls. The pneumatic press-release roll gap device for bar rolls and the roll gap adjustment device include a frame, a ferrule, a pneumatic rotating device and a gas conveying device; the frame is used to be connected with a transmission box; the pneumatic rotating device is arranged on the frame and connected with the ferrule; the gas conveying device is connected with the pneumatic rotating device and is used to convey gas into the pneumatic rotating device to drive the ferrule to rotate; the ferrule is used to be transmission-connected with a roll gap retracting and releasing rod on the transmission box to drive two rolls connected to the transmission box to move closer to or away from each other, which can reduce the labor intensity of workers.

Description

Technical Field

[0001] The invention relates to the technical field of rolling rollers, and in particular to a pneumatic roll gap releasing device for a bar rolling roller and a roll gap adjusting device. Background Art

[0002] After the bar rolls have reached the rated rolling output, they need to be taken offline for repair due to severe wear of the roll hole. After being taken offline, they need to be tested for roll gap retraction and extension to check whether there is any obstruction in the roll gap adjustment mechanism, so as to avoid the inability to retract and extend the roll gap during the online production process after the rolls are reinstalled, resulting in offline repairs again, affecting production and increasing the labor intensity of employees. During the inspection, the two rolls need to be pressed to the minimum roll gap, and then the roll gap is expanded to the maximum for inspection. If there is no abnormality, it can be adjusted to the original roll gap. When manually pressing and releasing the roll gap, the worker uses a wrench to turn the roll gap retraction and extension rod on the transmission box to press and release, which makes the workers' labor intensity greater. Summary of the invention

[0003] The objects of the present invention include, for example, providing a pneumatic press-release roll gap device for bar rolling mills, which can reduce the labor intensity of workers.

[0004] The purpose of the present invention also includes providing a roller gap adjustment device, which can reduce the labor intensity of workers.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The embodiment of the present invention provides a pneumatic press-release roll gap device for a bar rolling mill, which comprises a frame, a clamping sleeve, a pneumatic rotating device and a gas conveying device;

[0007] The frame is used to be connected to the transmission box;

[0008] The pneumatic rotating device is arranged on the frame and connected with the ferrule;

[0009] The gas delivery device is connected to the pneumatic rotating device and is used to deliver gas into the pneumatic rotating device to drive the ferrule to rotate;

[0010] The clamping sleeve is used for transmission connection with the retracting and unretracting roller seam rod on the transmission box, so as to drive the two rollers connected to the transmission box to approach each other or move away from each other.

[0011] Optionally, the gas delivery device includes an air pump, a handle, a speed regulator, an air distribution valve and two air pipes, the air distribution valves are arranged on the frame, one end of the two air pipes are connected to the pneumatic rotating device, the other end of the two air pipes are connected to the air distribution valves, the air pump and the speed regulator are connected to the air distribution valves; the handle is connected to the speed regulator;

[0012] When the handle swings clockwise, the air pump sends gas through the air distribution valve into the pneumatic rotating device through one of the air pipes to drive the ferrule to rotate forward; when the handle swings counterclockwise, the air pump sends gas through the air distribution valve into the pneumatic rotating device through the other air pipe to drive the ferrule to rotate backward.

[0013] The pneumatic roll gap adjusting device for bar rolling mills further includes a dial, which is arranged on the pneumatic rotating device. A pointer and a plurality of scale lines are arranged in the dial; during the process of the air pump delivering gas into the air pipe, the pointer deflects between the plurality of scale lines.

[0014] Optionally, among the plurality of scale lines, there are a first scale line and a second scale line located at both ends. The speed regulator has a first state when being pressed down and a second state when the pressing down is released;

[0015] When the speed regulator is in the first state and the handle swings clockwise once, the pointer swings from the first scale line to the second scale line, and the two rolls move away from each other with the center distance between the two rolls being a first preset distance to the center distance between the two rolls being a second preset distance;

[0016] When the speed regulator is in the first state and the handle swings counterclockwise once, the pointer swings from the second scale line to the first scale line, and the two rolls move closer to each other with the center distance between the two rolls being a second preset distance to the center distance between the two rolls being a first preset distance; wherein, the first preset distance is less than the second preset distance;

[0017] When the speed regulator is in the second state and the handle swings once, the pointer swings between two adjacent scale lines, and the two rolls move away from or closer to each other by a preset value.

[0018] Optionally, it further includes a controller. A first limiter and a second limiter are respectively arranged at the first scale line and the second scale line. Both the first limiter and the second limiter are electrically connected to the controller, and the controller is electrically connected to the air distribution valve;

[0019] When the first limiter or the second limiter touches the pointer and sends a signal to the controller, the controller controls the air distribution valve to stop delivering gas.

[0020] Optionally, the first preset distance is 520 - 560 mm, and the second preset distance is 640 - 680 mm.

[0021] Optionally, the preset value is 1.0 - 1.4 mm.

[0022] Optionally, the frame includes two opposite side plates, the two side plates are respectively attached to two opposite side walls of the transmission box, a screw rod is arranged between the two side plates, nuts are respectively sleeved at two ends of the screw rod, and the two nuts respectively press the two side plates against the transmission box.

[0023] Optionally, the pneumatic rotating device is a pneumatic rotary cylinder.

[0024] An embodiment of the present invention further provides a roll gap adjusting device, which includes a transmission box, two rolling rolls, two roll boxes, a bidirectional screw rod, and the above-mentioned bar rolling roll pneumatic pressing and releasing roll gap device. The two rolling rolls are respectively arranged in the two roll boxes, the ferrule is in transmission connection with the roll gap adjusting and releasing rod on the transmission box, the bidirectional screw rod is connected with the transmission box, and the two roll boxes are respectively connected with two screw rods with opposite threads on the bidirectional screw rod.

[0025] Optionally, the transmission box is a worm and worm gear box.

[0026] The beneficial effects of the bar rolling roll pneumatic pressing and releasing roll gap device and the roll gap adjusting device according to the embodiments of the present invention include, for example: gas is conveyed into the pneumatic rotating device through a gas conveying device to drive the ferrule to rotate, the rotation of the ferrule drives the roll gap adjusting and releasing rod to rotate synchronously, thereby driving the transmission box to operate, and the operation of the transmission box drives the two rolling rolls to approach or move away from each other. During this process, it is checked whether there is jamming when the two rolling rolls approach or move away from each other. Since there is no need for workers to manually turn the roll gap adjusting and releasing rod with a wrench to press and release the roll gap, the labor intensity of the workers is reduced. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a side view of the roll gap adjusting device in the embodiment of the present application;

[0029] Figure 2 It is a front view of the roll gap adjusting device in the embodiment of the present application.

[0030] Icons: 10 - roll gap adjustment device; 100 - frame; 110 - side plate; 120 - screw; 130 - nut; 200 - ferrule; 300 - pneumatic rotating device; 400 - gas delivery device; 410 - handle; 420 - gas distribution valve; 430 - speed governor; 440 - air pipe; 450 - air pipe joint; 500 - dial; 600 - gearbox. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0033] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the products of the present invention are customarily placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0035] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0036] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0037] The inventors of the present application found that when manually pressing and releasing the roll gap, workers use a wrench to rotate the roll gap adjusting rod on the gearbox for pressing and releasing, which makes the labor intensity of workers relatively large. This embodiment provides a roll gap adjustment device, which is at least used to solve this technical problem.

[0038] Please refer toFigure 1 , Figure 2 The roll gap adjustment device 10 provided in this embodiment includes a transmission box 600, two rolls, two roll boxes, a bidirectional screw and a pneumatic roll gap pressing device for bar rolls.

[0039] The pneumatic pressing and releasing roller gap device for bar rolling mill comprises a frame 100, a ferrule 200, a pneumatic rotating device 300 and a gas conveying device 400; the frame 100 is used to be connected with a transmission box 600; the pneumatic rotating device 300 is arranged on the frame 100 and connected with the ferrule 200; the gas conveying device 400 is connected with the pneumatic rotating device 300 and is used to convey gas into the pneumatic rotating device 300 to drive the ferrule 200 to rotate; the ferrule 200 is used to be drivingly connected with the retracting and releasing roller gap rod on the transmission box 600 to drive the two rolling mills connected to the transmission box 600 to approach or move away from each other. The two rolling mills are respectively arranged in two rolling mill boxes, the ferrule 200 is drivingly connected with the retracting and releasing roller gap rod on the transmission box 600, the bidirectional screw is connected with the transmission box 600, and the two rolling mill boxes are respectively connected with two sections of screws with opposite threads on the bidirectional screw.

[0040] In this embodiment, the two rollers are parallel and are respectively arranged in two roller boxes; the two roller boxes are respectively matched with the two sections of screw threads with opposite threads on the bidirectional screw, and the bidirectional screw is connected to the transmission box 600 for transmission; the sleeve 200 is connected with the retractable roller gap rod on the transmission box 600, and the retractable roller gap rod rotates synchronously with the sleeve 200.

[0041] Gas is delivered to the pneumatic rotating device 300 through the gas delivery device 400 to drive the ferrule 200 to rotate. The rotation of the ferrule 200 drives the retractable roller gap rod to rotate synchronously, thereby driving the transmission box 600 to operate. The operation of the transmission box 600 drives the bidirectional screw to rotate, so that the two rollers on the two roller boxes approach each other or move away from each other. In this process, it is checked whether there is any obstruction when the two rollers approach each other or move away from each other. Since there is no need for workers to manually use a wrench to rotate the retractable roller gap rod to compress the roller gap, the labor intensity of the workers is reduced.

[0042] Further, the gas delivery device 400 includes an air pump (not shown in the figure), a handle 410, a speed regulator 430, a gas distribution valve 420, and two air pipes 440. The gas distribution valve 420 is disposed on the frame 100. One ends of the two air pipes 440 are both connected to the pneumatic rotating device 300, and the other ends of the two air pipes 440 are both connected to the gas distribution valve 420. The air pump and the speed regulator 430 are both connected to the gas distribution valve 420; the handle 410 is connected to the speed regulator 430; when the handle 410 swings clockwise, the air pump sends gas into the pneumatic rotating device 300 through one of the air pipes 440 via the gas distribution valve 420 to drive the ferrule 200 to rotate forward; when the handle 410 swings counterclockwise, the air pump sends gas into the pneumatic rotating device 300 through the other air pipe 440 via the gas distribution valve 420 to drive the ferrule 200 to rotate reversely; the bar rolling mill pneumatic roll gap adjusting device further includes a dial 500, the dial 500 is disposed on the pneumatic rotating device 300, and a pointer and a plurality of scale lines are arranged in the dial 500; during the process of the air pump delivering gas into the air pipe 440, the pointer deflects between the plurality of scale lines.

[0043] In this embodiment, the two air pipes 440 are connected to the left and right sides of the gas distribution valve 420, and a pipe joint 450 is further disposed on the gas distribution valve 420. The air pump is connected to the pipe joint 450; when the handle 410 swings clockwise, the air pump sends gas into the pneumatic rotating device 300 through the pipe joint 450 and the right-side air pipe 440 of the gas distribution valve 420 in sequence to drive the ferrule 200 to rotate forward; when the handle 410 swings counterclockwise, the air pump sends gas into the pneumatic rotating device 300 through the pipe joint 450 and the left-side air pipe 440 of the gas distribution valve 420 in sequence to drive the ferrule 200 to rotate reversely.

[0044] When the handle 410 is swung clockwise, the ferrule 200 rotates forward, thereby driving the roll gap adjusting rod to rotate synchronously, thereby driving the transmission box 600 to operate. The operation of the transmission box 600 drives the bidirectional screw to rotate forward, so that the two rolls on the two roll boxes move away from each other; when the handle 410 is swung counterclockwise, the ferrule 200 rotates reversely, thereby driving the roll gap adjusting rod to rotate synchronously, thereby driving the transmission box 600 to operate. The operation of the transmission box 600 drives the bidirectional screw to rotate reversely, so that the two rolls on the two roll boxes move closer to each other. During the process of the air pump delivering gas into the air pipe 440, the pointer deflects between the plurality of scale lines. The number of grids between the scale lines where the pointer deflects is related to the distance between the two rolls approaching or separating. According to the number of grids between the scale lines where the pointer deflects, the distance between the two rolls approaching or separating can be obtained. If the two rolls are stuck during the movement, according to the position where the pointer stops and the corresponding value, the stuck point can be accurately found, which is convenient for maintenance.

[0045] It can be understood that in other embodiments, the relationship between the rotation direction of the handle 410 and the rotation direction of the ferrule 200 can also be: when the handle 410 is swung clockwise, the ferrule 200 rotates in the reverse direction, so that the two rollers on the two roller boxes approach each other, and when the handle 410 is swung counterclockwise, the ferrule 200 rotates in the forward direction, so that the two rollers on the two roller boxes move away from each other.

[0046] Further, among the multiple scale lines, there are a first scale line and a second scale line located at both ends. The speed governor 430 has a first state when pressed down and a second state when the pressing down is released; when the speed governor 430 is in the first state and the handle 410 is swung clockwise once, the pointer swings from the first scale line to the second scale line, and the two rollers move away from each other from a first preset distance between the two rollers to a second preset distance between the two rollers; when the speed governor 430 is in the first state and the handle 410 is swung counterclockwise once, the pointer swings from the second scale line to the first scale line, and the two rollers move closer to each other from a second preset distance between the two rollers to a first preset distance between the two rollers; wherein, the first preset distance is less than the second preset distance.

[0047] In this embodiment, the first preset distance is 520 - 560 mm, and the second preset distance is 640 - 680 mm. The first preset distance is the preset minimum value of the center distance between the two rollers, and the second preset distance is the preset maximum value of the center distance between the two rollers.

[0048] Optionally, the first preset distance is 540 mm, and the second preset distance is 660 mm.

[0049] When the speed governor 430 is in the first state and the handle 410 is swung clockwise once, the pointer swings from the first scale line to the second scale line, and the two rollers move away from each other from a center distance of 540 mm between the two rollers to a center distance of 660 mm between the two rollers; when the speed governor 430 is in the first state and the handle 410 is swung counterclockwise once, the pointer swings from the second scale line to the first scale line, and the two rollers move closer to each other from a center distance of 660 mm between the two rollers to a center distance of 540 mm between the two rollers.

[0050] Further, when the speed governor 430 is in the second state and the handle 410 is swung once, the pointer swings between two adjacent scale lines, and the two rollers move away from or close to each other by a preset value.

[0051] In this embodiment, the number of grids between the first scale line and the second scale line is 100 grids, and each grid corresponds to adjusting the distance between the two rollers by a preset value, and the preset value is 1.0 - 1.4 mm. The speed governor 430 is in a state of precise adjustment in the second state.

[0052] Optionally, the preset value is set to 1.2 mm.

[0053] When the speed governor 430 is in the second state and the handle 410 swings clockwise once, the pointer swings one grid in the swinging direction towards the second scale line, and at this time the two rollers move away from each other by 1.2 mm; when the speed governor 430 is in the second state and the handle 410 swings counterclockwise once, the pointer swings one grid in the swinging direction towards the first scale line, and at this time the two rollers move closer to each other by 1.2 mm.

[0054] In addition, the pneumatic roll gap adjusting device for bar rolling mills further includes a controller. A first stopper and a second stopper are respectively arranged at the first scale line and the second scale line. Both the first stopper and the second stopper are electrically connected to the controller, and the controller is electrically connected to the air distribution valve 420; when the first stopper or the second stopper contacts the pointer and sends a signal to the controller, the controller controls the air distribution valve 420 to stop delivering gas.

[0055] When the pointer deflects to the position of the first scale line and contacts the first stopper, the first stopper sends a signal to the controller, and the controller controls the air distribution valve 420 to stop delivering gas, and the relative movement of the two rollers stops; when the pointer deflects to the position of the second scale line and contacts the second stopper, the second stopper sends a signal to the controller, and the controller controls the air distribution valve 420 to stop delivering gas, and the relative movement of the two rollers stops. By respectively arranging the first stopper and the second stopper at the first scale line and the second scale line, the center distance between the two rollers can be controlled between a preset minimum value and a preset maximum value, and the relative movement range of the two rollers can be controlled.

[0056] Furthermore, the frame 100 includes two opposite side plates 110. The two side plates 110 are respectively attached to two opposite side walls of the transmission box 600. A screw rod 120 is arranged between the two side plates 110. A nut 130 is sleeved at each end of the screw rod 120, and the two nuts 130 respectively press the two side plates 110 against the transmission box 600.

[0057] During the process of installing the pneumatic roll gap adjusting device for bar rolling mills on the transmission box 600, the ferrule 200 is sleeved with the roll gap adjusting rod on the transmission box 600, and the two side plates 110 are attached to two opposite side walls of the transmission box 600. Subsequently, the two side plates 110 are respectively pressed and fixed on the transmission box 600 by the two nuts 130 to fix the pneumatic roll gap adjusting device for bar rolling mills.

[0058] In this embodiment, the pneumatic rotating device 300 is a pneumatic rotary cylinder, and the transmission box 600 is a worm and worm gear box.

[0059] It can be understood that in other embodiments, the transmission box 600 can also be a gear box, as long as it can drive the bidirectional screw rod to rotate to drive the relative movement of the two rollers.

[0060] In summary, the embodiment of the present invention provides a pneumatic roll gap adjusting device for bar rolling rolls and a roll gap adjusting device 10. Gas is sequentially supplied into the pneumatic rotary cylinder through an air pump, an air distribution valve 420, and an air pipe 440 to drive the collet 200 to rotate. The rotation of the collet 200 drives the roll gap adjusting rod to rotate synchronously, thereby driving the transmission box 600 to operate. The operation of the transmission box 600 drives the bidirectional screw rod to rotate, so that the two rolls on the two roll boxes approach or move away from each other. During this process, it is checked whether there is jamming when the two rolls approach or move away from each other. If there is jamming, the jamming point can be accurately obtained by checking the scale indicated by the pointer on the dial 500, which is convenient for maintenance. Since the whole process does not require workers to manually turn the roll gap adjusting rod with a wrench to adjust the roll gap, the labor intensity of workers is reduced.

[0061] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A pneumatic press-release device for bar rolling mill rolls, It is characterized in that It includes a frame, a ferrule, a pneumatic rotating device and a gas conveying device; The frame is used to be connected to the transmission box; The pneumatic rotating device is arranged on the frame and connected with the ferrule; The gas delivery device is connected to the pneumatic rotating device and is used to deliver gas into the pneumatic rotating device to drive the ferrule to rotate; The clamping sleeve is used for transmission connection with the retracting and unretracting roller gap rod on the transmission box to drive the two rollers connected to the transmission box to move closer to or away from each other; The gas delivery device comprises an air pump, a handle, a speed regulator, an air distribution valve and two air pipes, wherein the air distribution valve is arranged on the frame, one end of the two air pipes is connected to the pneumatic rotating device, and the other end of the two air pipes is connected to the air distribution valve, the air pump and the speed regulator are connected to the air distribution valve; the handle is connected to the speed regulator; When the handle swings clockwise, the air pump delivers gas from one of the air pipes through the air separation valve into the pneumatic rotating device to drive the ferrule to rotate forward; when the handle swings counterclockwise, the air pump delivers gas from the other air pipe through the air separation valve into the pneumatic rotating device to drive the ferrule to rotate reversely; The pneumatic pressing and releasing roll gap device for the bar rolling roller also includes a dial, which is arranged on the pneumatic rotating device, and has a pointer and a plurality of scale lines arranged inside the dial; during the process of the air pump conveying gas into the air pipe, the pointer deflects between the plurality of scale lines.

2. The pneumatic press-release roll gap device for bar rolling mills according to claim 1, It is characterized in that The plurality of scale lines include a first scale line and a second scale line located at both ends, and the speed regulator has a first state when pressed down, and has a second state when released from the pressure; The speed regulator is in the first state, and when the handle swings clockwise once, the pointer swings from the first scale line to the second scale line, and the two rollers move away from each other from a center distance of the two rollers being a first preset distance to a center distance of the two rollers being a second preset distance; The speed regulator is in the first state, and when the handle swings counterclockwise once, the pointer swings from the second scale line to the first scale line, and the two rollers move closer to each other from a center distance of the two rollers being the second preset distance to a center distance of the two rollers being the first preset distance; wherein the first preset distance is smaller than the second preset distance; The speed regulator is in the second state, and when the handle swings once, the pointer swings between two adjacent scale lines, and the two rollers move away from or approach each other by a preset value.

3. The pneumatic press-release roll gap device for bar rolling mills according to claim 2, It is characterized in that The device further comprises a controller, wherein a first stopper and a second stopper are respectively arranged at the first scale line and the second scale line, the first stopper and the second stopper are both electrically connected to the controller, and the controller is electrically connected to the gas distribution valve; When the first stopper or the second stopper contacts the pointer and sends a signal to the controller, the controller controls the gas distribution valve to stop delivering gas.

4. The pneumatic roll gap adjusting device for bar rolling rolls according to claim 2, characterized in that the first preset distance is 520 - 560 mm, and the second preset distance is 640 - 680 mm.

5. The pneumatic roll gap adjusting device for bar rolling rolls according to claim 2, characterized in that the preset value is 1.0 - 1.4 mm.

6. The pneumatic roll gap adjusting device for bar rolling rolls according to claim 1, characterized in that the frame includes two opposite side plates. The two side plates are respectively attached to two opposite side walls of the transmission box. A screw rod is arranged between the two side plates. Two nuts are respectively sleeved at two ends of the screw rod, and the two nuts respectively press the two side plates against the transmission box.

7. The pneumatic roll gap adjusting device for bar rolling rolls according to claim 1, characterized in that the pneumatic rotating device is a pneumatic rotary cylinder.

8. A roll gap adjusting device, characterized in that it includes a transmission box, two rolling rolls, two roll boxes, a bidirectional screw rod, and the pneumatic roll gap adjusting device for bar rolling rolls according to any one of claims 1 - 7. The two rolling rolls are respectively arranged in the two roll boxes. The collet is in transmission connection with the roll gap adjusting rod on the transmission box. The bidirectional screw rod is connected to the transmission box. The two roll boxes are respectively connected to two screw rods with opposite threads on the bidirectional screw rod.

9. The roll gap adjusting device according to claim 8, characterized in that the transmission box is a worm and worm gear box.

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