CN214866346U - Guard ring dog-ear device - Google Patents

Abstract

The application relates to the technical field of guard ring production equipment, in particular to a guard ring angle folding device, the steel plate angle folding assembly comprises a frame, a plurality of steel plate angle folding assemblies sequentially arranged along the horizontal direction are arranged on the frame, the steel plate angle folding assemblies are connected to an upper compression roller and a lower compression roller of the frame in a rotating mode, the side wall of the upper compression roller is of an outward convex shape, the side wall of the lower compression roller is of an inward concave shape, the bending angle of each steel plate angle folding assembly is gradually increased from a feeding position to a discharging position, a pre-pressing assembly is arranged on the frame and comprises an upper pre-pressing roller and a lower pre-pressing roller which are rotatably connected to the frame, the axial direction of the upper pre-pressing roller and the axial direction of the lower pre-pressing roller are the same as the axial direction of the upper compression roller, the upper pre-pressing roller and the lower pre-pressing roller are arranged at intervals, pre-pressing knife rings are arranged on the side wall of the upper pre-pressing roller, pre-pressing ring grooves corresponding to the pre-pressing knife rings are formed in the lower pre-pressing roller, and limiting plates used for two sides of a steel plate to collide with each other are arranged at two ends of the lower pre-pressing roller. The method and the device can improve the bevel position precision of the steel plate.

Description

Guard ring dog-ear device

Technical Field

The application relates to the technical field of protective ring production equipment, in particular to a protective ring angle folding device.

Background

The protective ring is a protective part for protecting two ends of an annular article such as a steel coil and the like, and in the production process of the protective ring, a steel plate needs to be subjected to steps of angle folding, bending and the like, so that an annular protective ring is formed, and the inner ring part is folded towards one side.

Current protective shroud dog-ear device includes the frame, be provided with a plurality of steel sheet dog-ear subassembly in the frame, every steel sheet dog-ear subassembly is arranged along the horizontal direction in proper order, steel sheet dog-ear subassembly includes from last to rotating in proper order down and connecting in the last compression roller and the lower compression roller of frame, it is the interval setting with the lower compression roller to go up the compression roller, the lateral wall of going up the compression roller is outer convex, the lateral wall of lower compression roller is interior concavity, the angle of buckling of every group steel sheet dog-ear subassembly is crescent from the feeding department to the ejection of compact department along the horizontal direction.

When the workman need carry out the dog-ear to the steel sheet, the workman with the steel sheet from between feeding department propelling movement supreme compression roller and the lower compression roller, the lateral wall of going up the compression roller cooperates jointly with the lateral wall of lower compression roller and carries out the dog-ear to the steel sheet, the dog-ear angle of steel sheet increases the shaping gradually through a plurality of steel sheet dog-ear subassembly, when the steel sheet left the compression roller from the ejection of compact department and goes down between the compression roller at last, the dog-ear step is accomplished to the steel sheet.

However, when the existing steel plate enters the beveling step, the steel plate is directly extruded by the convex side wall of the upper press roll to be beveled, so that the beveling position accuracy of the steel plate is easy to lower.

SUMMERY OF THE UTILITY MODEL

In order to improve the dog-ear position accuracy of steel sheet, this application provides a protective shroud dog-ear device.

The application provides a protective shroud dog-ear device adopts following technical scheme: the utility model provides a protective shroud dog-ear device, includes the frame, is equipped with the steel sheet dog-ear subassembly that a plurality of arranged in proper order along the horizontal direction in the frame, steel sheet dog-ear subassembly includes from last to rotating the last compression roller and the lower compression roller of connecting in the frame down in proper order, and last compression roller and lower compression roller are the interval setting, and the lateral wall of going up the compression roller is outer convex, and the lateral wall of lower compression roller is interior concavity, the frame is established respectively to feed department and ejection of compact department along the both ends of steel sheet dog-ear subassembly direction of arranging, and the angle of buckling of every group steel sheet dog-ear subassembly is crescent from feed department to ejection of compact department, be equipped with pre-compaction subassembly in the frame, pre-compaction subassembly includes the last pre-compaction roller and the lower pre-compaction roller that rotate to be connected in the frame, the axial of going up the pre-compaction roller with the axial of lower pre-compaction roller all is the same with the axial of last compression roller, go up the pre-compaction roller and lower pre-compaction roller are the interval setting, be equipped with pre-compaction sword ring on the lateral wall of going up the pre-compaction roller, the lower prepressing roll is provided with prepressing ring grooves corresponding to the prepressing cutter rings, and two ends of the lower prepressing roll are provided with limiting plates used for abutting against two sides of the steel plate.

Through adopting above-mentioned technical scheme, when the workman need carry out the dog-ear to the steel sheet, the workman will steel sheet propelling movement supreme prepressing roller and down between the prepressing roller, the limiting plate is contradicted in the both sides of steel sheet this moment, thereby the prepressing cutter ring presses partial steel sheet to the pre-compaction annular to form the crease, then, the steel sheet continues to be pushed to between the top roll and the lower pinch roll, go up the crease application of force to the steel sheet with the lower pinch roll jointly, and then carry out the dog-ear to the steel sheet, accomplish the dog-ear step, thereby guaranteed the dog-ear position of steel sheet at every turn, the dog-ear position precision of steel sheet has been improved.

Optionally, the lower pre-pressing roller comprises a first roller body and a first shaft, the two limiting plates are sleeved on the first shaft in a sliding mode, sleeves sleeved on the first shaft in a sliding mode are arranged on the limiting plates, and locking bolts used for abutting the sleeves on the first shaft are connected to the sleeves in a threaded mode.

By adopting the technical scheme, when a worker needs to adjust the bevel position of the steel plate, the worker twists the locking bolt to separate the locking bolt from the first shaft, then the worker pushes the sleeve corresponding to the limiting plate to move on the first shaft, the worker tightens the locking bolt to enable the locking bolt to be abutted against the first shaft after the position is determined, so that the position of the corresponding limiting plate is locked, the worker repeats the motion to adjust the position of another limiting plate, and the worker can conveniently adjust the bevel position of the steel plate.

Optionally, an indentation ring for pressing an impression on the surface of the steel plate is sleeved on the side wall of the upper prepressing roll.

By adopting the technical scheme, when the steel plate is pushed to the position between the upper prepressing roll and the lower prepressing roll, the indentation ring presses the surface of the steel plate, so that concave-convex grains are formed on the surface of the steel plate, the strength of the steel plate is enhanced, and the steel plate keeps certain strength in the bending process.

Optionally, the upper pre-pressing roller comprises a second roller body, a third roller body, a second shaft and a third shaft which are coaxially arranged, the second shaft and the third shaft are all rotatably connected to the rack, the second roller body is connected with the second shaft, the third roller body is slidably sleeved on the third shaft, a gap for taking out the indentation ring is formed between the third shaft and the second shaft, a threaded ring is coaxially arranged at one end of the third roller body facing the second roller body, and a threaded groove for threaded connection of the threaded ring is formed in one end of the second roller body facing the third roller body.

By adopting the technical scheme, when the indentation ring is worn, the worker grasps the second roller body and rotates the third roller body, the second roller body and the third roller body rotate relatively, the threaded ring is separated from the threaded groove, then the worker pushes the third roller body again, the third roller body moves on the third shaft in the direction away from the second roller body until the gap between the second shaft and the third shaft is exposed, the worker takes the indentation ring off the second roller body again and takes the indentation ring out from the second shaft and the third shaft, the worker sleeves a new indentation ring on the second roller body again between the second shaft and the third shaft, then the worker pushes the third roller body to move on the third shaft towards the second roller body, the worker grasps the second roller body and rotates the third roller body again to enable the threaded ring to be in threaded connection with the threaded groove, and replacement of the indentation ring by the worker is facilitated.

Optionally, an annular accommodating groove for sliding insertion of the indentation ring is formed in one end, opposite to the third roller body, of the second roller body.

Through adopting above-mentioned technical scheme, when the complete threaded connection of screw ring in the thread groove, the workman establishes the indentation snare in annular holding tank to make the indentation circle be difficult for sliding on third roll body and second roll body, improved the indentation effect of indentation circle to the steel sheet.

Optionally, a clamping block is arranged on a groove wall of the annular accommodating groove corresponding to the second roller body, and a clamping groove for clamping the clamping block is formed in the indentation ring.

Through adopting above-mentioned technical scheme, when the workman established the indentation snare in annular holding tank, joint piece joint was in the joint inslot to make the indentation circle be difficult for taking place relative rotation with the second roller body, further improved the indentation effect of indentation circle to the steel sheet.

Optionally, the frame includes from last carriage and the mount to extremely and arrange, all go up the compression roller with it all rotates to connect in the carriage to go up pre-compressed roller, all down the compression roller all rotates with lower pre-compressed roller and connects in the mount, be equipped with the lifting unit who drives the carriage along vertical direction motion on the mount, lifting unit includes that two rotate to connect in the lead screw of mount, two the lead screw is located the both sides of pre-compressed roller respectively, the lead screw be vertical setting and with carriage threaded connection, be equipped with the guide bar that extends along vertical direction on the mount, the guide bar is vertical setting and slides and wears to locate the carriage.

Through adopting above-mentioned technical scheme, when the workman need change the interval of last compression roller and lower compression roller, the workman rotates two lead screws for two lead screws are around rotating around axis separately, thereby lead screw and carriage threaded connection transfer the sliding frame and slide on the guide bar, the carriage drives compression roller and last pre-compaction roller and moves along vertical direction, thereby the interval of last compression roller and lower compression roller has been changed, the stability of carriage has been improved in the cooperation of two lead screws simultaneously, thereby be applicable to the steel sheet of processing different thickness.

Optionally, the upper ends of the two screw rods are coaxially provided with synchronizing gears, and the synchronizing gears are engaged with a common synchronous belt.

Through adopting above-mentioned technical scheme, when the workman need rotate two lead screws, the workman rotated one of them lead screw for the synchronizing gear who corresponds is rotatory, and two synchronizing gear and hold-in range meshing, thereby it is rotatory to drive another synchronizing gear, thereby it is rotatory to drive another lead screw, has made things convenient for the workman to use the lead screw.

To sum up, the application comprises the following beneficial technical effects:

1. through the arrangement of the pre-pressing assembly and the limiting plate, workers can conveniently control the bevel position of the steel plate every time, and the bevel position precision of the steel plate is improved;

2. through the arrangement of the sleeve and the locking bolt, the position of the limiting plate can be conveniently adjusted by an individual worker, so that the worker can conveniently adjust the bevel position of the steel plate;

3. through the arrangement of the indentation ring, concave-convex lines are formed on the surface of the steel plate, so that the strength of the steel plate is enhanced, and the steel plate keeps certain strength in the subsequent bending process;

4. through the arrangement of the threaded ring and the threaded groove, the replacement of the indentation ring by workers is facilitated;

5. through the arrangement of the annular accommodating groove, the indentation ring is not easy to slide on the third roller body and the second roller body;

6. through the arrangement of the clamping blocks and the clamping grooves, the indentation ring is not easy to rotate relative to the second roller body;

7. through the arrangement of the lifting assembly, workers can conveniently adjust the distance between the upper compression roller and the lower compression roller, and the device is suitable for processing steel plates with different thicknesses;

8. through the arrangement of the synchronous gear and the synchronous belt, the lead screw is convenient for workers to use.

Drawings

FIG. 1 is a schematic diagram of the overall structure in the embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the embodiment of the present application for illustrating the pre-press assembly, the indentation ring, the threaded ring, and the thread groove;

fig. 3 is a schematic cross-sectional structure diagram for showing the clip groove and the clip block in the embodiment of the present application.

Reference numerals: 1. a frame; 11. a carriage; 12. a fixed mount; 2. a steel plate corner folding assembly; 21. an upper compression roller; 22. a lower pressing roller; 3. a pre-pressing component; 31. an upper pre-pressing roller; 311. a second shaft; 312. a second roller body; 313. a third axis; 314. a third roller body; 32. prepressing a cutter ring; 33. a lower pre-pressing roller; 331. a first shaft; 332. a first roller body; 34. prepressing the ring groove; 4. a limiting plate; 41. a sleeve; 42. a locking bolt; 5. pressing rings; 51. an annular accommodating groove; 52. a threaded ring; 53. a thread groove; 54. a clamping block; 55. a clamping groove; 6. a lifting assembly; 61. a screw rod; 62. a guide bar; 63. a synchronizing gear; 64. a synchronous belt; 65. rotating the handle; 7. a drive assembly; 71. a drive gear; 72. a drive belt; 73. an electric motor.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses protective ring dog-ear device. As shown in fig. 1, a protective ring dog-ear device, including the frame 1 that extends along the horizontal direction, it is used for carrying out the pre-compaction subassembly 3 of pre-compaction crease to the steel sheet to have set gradually along its length direction in the frame 1, be used for carrying out a plurality of steel sheet dog-ear subassembly 2 of dog-ear to the steel sheet along the steel sheet crease, frame 1 is by mount 12 and carriage 11 subassembly, carriage 11 is located the top of mount 12, be equipped with the lifting unit 6 that is used for driving carriage 11 along the vertical direction motion on mount 12, steel sheet dog-ear subassembly 2 is including rotating the last compression roller 21 of connecting in carriage 11, rotate the bottom roller 22 of connecting in mount 12, the last compression roller 21 that corresponds and bottom roller 22 are upper and lower interval setting, the lateral wall of going up compression roller 21 is the evagination, the lateral wall of bottom roller 22 is interior concavity, the both ends on the length direction of mount 12 are feeding department and ejection of compact department respectively, the angle of the steel sheet dog-ear subassembly 2 is followed the feeding department to the angle of bending of steel sheet to last compression roller 21 and bottom roller 22 Gradually increases to the discharging position.

As shown in fig. 1 and 2, the pre-pressing assembly 3 includes an upper pre-pressing roller 31 rotatably connected to the sliding frame 11 and a lower pre-pressing roller 33 rotatably connected to the fixed frame 12, the upper pre-pressing roller 31 and the lower pre-pressing roller 33 are both located at a feeding position, a pre-pressing knife ring 32 for extruding a steel plate is fixedly connected to an outer wall of the upper pre-pressing roller 31, a pre-pressing ring groove 34 corresponding to the pre-pressing knife ring 32 is formed in the lower pre-pressing roller 33, the pre-pressing knife ring 32, the folding angle positions of the upper pressing roller 21 and the lower pressing roller 22 are located on the same vertical plane, and axial directions of the upper pre-pressing roller 31, the upper pressing roller 21, the lower pressing roller 22 and the lower pre-pressing roller 33 all extend along a horizontal direction and are perpendicular to a length direction of the frame 1.

When a worker needs to angle the steel plate, the worker firstly pushes the steel plate from a feeding position to a position between the upper prepressing roller 31 and the lower prepressing roller 33, at the moment, the prepressing knife ring 32 on the upper prepressing roller 31 extrudes the steel plate, so that the part of the steel plate corresponding to the prepressing knife ring 32 deforms and is embedded into the prepressing ring groove 34, at the moment, the steel plate forms a crease extending along the length direction of the rack 1, the steel plate continuously enters a position between the subsequent upper pressing roller 21 and the subsequent lower pressing roller 22, the outer wall of the upper pressing roller 21 and the outer wall of the lower pressing roller 22 jointly extrude the steel plate to enable the steel plate to be angled along the crease, and the steel plate is subjected to angle folding until the last group of upper pressing roller 21 and the last group of lower pressing roller 22 extrude the steel plate, so that the angle folding step of the steel plate is completed, and the angle folding precision of the steel plate is guaranteed.

As shown in fig. 1 and fig. 2, the lower pre-press roll 33 includes a first roll body 332 and a first shaft 331 that are coaxially disposed, the first shaft 331 is rotatably connected to the fixing frame 12, two limit plates 4 are slidably sleeved on the first shaft 331, the two limit plates 4 are respectively located at two ends of the first roll body 332, one end of each limit plate 4 away from the first roll body 332 is fixedly connected to a sleeve 41, the sleeve 41 is slidably sleeved on the first shaft 331, a threaded hole penetrating through an inner wall of the sleeve 41 is formed in an outer wall of the sleeve 41, a locking bolt 42 is threadedly connected to the threaded hole, and an axial direction of the locking bolt 42 is perpendicular to an axial direction of the first shaft 331.

When the worker pushes the steel plate between the upper prepressing roll 31 and the lower prepressing roll 33, the two sides of the steel plate respectively abut against the two limiting plates 4, so that the steel plate is not easy to incline and rock in the pushing process, the angle folding position of the steel plate at each time is further ensured, and the angle folding position precision of the steel plate is further improved.

When the width or the bevel position of the steel plate needs to be changed, a worker unscrews the locking bolt 42, so that the locking bolt 42 is separated from the first shaft 331, then the worker pushes the corresponding sleeve 41 to slide on the first shaft 331, the sleeve 41 drives the limiting plate 4 to move along the axial direction of the first shaft 331, until the position of the limiting plate 4 is determined, the worker screws the locking bolt 42, so that the locking bolt 42 is abutted against the first shaft 331, the sleeve 41 and the limiting plate 4 do not easily move on the first shaft 331, and the worker can adjust the position of the other limiting plate 4 by repeating the actions, so that the worker can conveniently adjust the bevel position of the steel plate, and the steel plate bevel position adjusting device is suitable for processing steel plates with different widths.

As shown in fig. 1, the lifting assembly 6 includes two lead screws 61 respectively located at two sides of all the upper press rolls 21, the axial direction of the lead screws 61 extends along the vertical direction, the lower ends of all the lead screws 61 are rotatably connected to the fixed frame 12, the two lead screws 61 are in threaded connection with the sliding frame 11, a plurality of guide rods 62 extending along the vertical direction are fixedly connected to the fixed frame 12, the guide rods 62 are slidably inserted through the sliding frame 11, when the worker rotates the two lead screws 61 about their own axes, the lead screws 61 are screw-engaged with the carriage 11, thereby moving the carriage 11 in the vertical direction on the guide bar 62, so that the distance between the upper press roll 21 and the lower press roll 22 and the distance between the upper prepress roll 31 and the lower prepress roll 33 are changed, therefore, the steel plate pre-pressing device is suitable for processing steel plates with different thicknesses, and meanwhile, due to the arrangement of the two screw rods 61, the stability of the sliding frame 11 is improved, so that the stress of the upper pressing roller 21 and the upper pre-pressing roller 31 on the steel plates is more uniform.

As shown in fig. 1, the upper ends of the two lead screws 61 are fixedly connected with the synchronizing gears 63, the axes of the synchronizing gears 63 are collinear with the axes of the corresponding lead screws 61, the two synchronizing gears 63 are engaged with the same synchronizing belt 64, the upper end of one lead screw 61 is fixedly connected with the rotating handle 65, when a worker needs to use the lead screw 61, the worker twists the rotating handle 65, the rotating handle 65 drives the corresponding lead screw 61 to rotate around the axes thereof, the lead screw 61 drives the synchronizing gear 63 to rotate, the synchronizing gear 63 drives the synchronizing belt 64 to rotate so as to drive the other synchronizing gear 63 to rotate, and then drives the other lead screw 61 to rotate, so that the worker can rotate the two lead screws 61 by operating alone, and the use of the lead screw 61 by the worker is facilitated.

As shown in fig. 2, an annular accommodating groove 51 is formed in the side wall of the upper pre-pressing roller 31, an indentation ring 5 is sleeved in the annular accommodating groove 51, when a steel plate enters between the upper pre-pressing roller 31 and the lower pre-pressing roller 33, the indentation ring 5 extrudes the upper surface of the steel plate, so that indentation lines with staggered concave and convex shapes are formed on the upper surface of the steel plate, the strength of the steel plate is improved, a certain strength can be ensured in the subsequent bending step of the bent steel plate bessel, meanwhile, the annular accommodating groove 51 plays a limiting role on the indentation ring 5, the indentation ring 5 is not easy to move on the upper pre-pressing roller 31 along the axial direction of the indentation ring 5, and the indentation effect of the indentation ring 5 on the steel plate is improved.

As shown in fig. 2, the upper pre-press roll 31 includes a second shaft 311, a second roll 312, a third shaft 313, and a third roll 314, wherein the axes of the second shaft 311, the second roll 312, the third shaft 313, and the third roll 314 all coincide with the same horizontal line. The second shaft 311 and the third shaft 313 are arranged at intervals, the gap between the second shaft 311 and the third shaft 313 is larger than the width of the indentation ring 5, and one ends of the second shaft 311 and the third shaft 313, which are far away from each other, are both rotatably connected to the sliding frame 11; the second roller body 312 is connected to a side wall of the second shaft 311, the third roller body 314 is slidably sleeved on the third shaft 313, one end of the third roller body 314 facing the second roller body 312 is fixedly connected with a threaded ring 52, an axis of the threaded ring 52 is collinear with an axis of the third roller body 314, one end of the second roller body 312 facing the third roller body 314 is provided with a threaded groove 53 in threaded connection with the threaded ring 52, and the annular accommodating grooves 51 are respectively arranged on one ends of the second roller body 312 and the third roller body 314 facing each other.

When the indentation ring 5 is worn, a worker presses the second roller 312 to keep the second roller fixed, then the worker rotates the third roller 314, so that the third roller 314 and the second roller 312 rotate relatively, the threaded ring 52 is separated from the threaded groove 53, then the worker pushes the third roller 314 to slide on the third shaft 313, so that a gap between the third shaft 313 and the second shaft 311 is exposed, then the worker pulls the indentation ring 5 out of the annular accommodating groove 51, and the indentation ring 5 is taken out by the worker through the gap between the third shaft 313 and the second shaft 311, so that the worker can conveniently take out the indentation ring 5; the worker inserts a new indentation ring 5 into the corresponding annular accommodating groove 51 on the second shaft 311 through the space between the third shaft 313 and the second shaft 311, the worker pushes the third roller 314 to move on the third shaft 313, so that the threaded ring 52 corresponds to the threaded groove 53, the worker presses the second roller 312 and rotates the third roller 314, so that the third roller 314 and the second roller 312 rotate relatively, the threaded ring 52 is in threaded connection with the threaded groove 53, and after the threaded ring 52 is completely connected with the threaded groove 53, the end parts of the third roller 314 and the second roller 312 are mutually abutted and form a complete annular accommodating groove 51 to embed the indentation ring 5, so that the replacement of the indentation ring 5 by the worker is facilitated.

As shown in fig. 3, a plurality of clamping blocks 54 are fixedly connected to the groove wall of the annular accommodating groove 51 corresponding to the second roller body 312, all the clamping blocks 54 are circumferentially arranged around the axis of the second roller body 312 as a circle center, a plurality of clamping grooves 55 for clamping the clamping blocks 54 are formed in the indentation ring 5, and the clamping blocks 54 are in one-to-one correspondence with the clamping grooves 55. When the workman pegged graft indentation circle 5 in the annular holding tank 51 that second roll body 312 corresponds, joint piece 54 is pegged graft in joint groove 55 for relative rotation takes place for indentation circle 5 is difficult for taking place with second roll body 312, thereby has improved the indentation effect of indentation circle 5 to the steel sheet.

As shown in fig. 1, a driving assembly 7 for driving all the lower pressing rollers 22 and the lower pre-pressing roller 33 to rotate is arranged on the fixed frame 12, the driving assembly 7 includes a plurality of driving gears 71 respectively fixedly connected to the end portions of the lower pressing rollers 22 and the end portion of the first shaft 331, the same driving belt 72 is engaged with all the driving gears 71, a motor 73 is fixedly connected to the fixed frame 12, an output shaft of the motor 73 is fixedly connected with the first shaft 331, and an axis of the output shaft of the motor 73 is collinear with an axis of the first shaft 331.

When workers need to transport steel plates, the workers start the motor 73, the output shaft of the motor 73 drives the first shaft 331 to rotate, the first shaft 331 drives the corresponding driving gear 71 to rotate, and all the driving gears 71 rotate together through the rotation of the driving belt 72, so that the rotation of all the lower pressing rollers 22 and the lower prepressing rollers 33 is realized, and the feeding process of the steel plates is facilitated.

The implementation principle of a protective ring dog-ear device of the embodiment of the application is as follows: when a worker needs to angle the steel plate, the worker starts the motor 73, the output shaft of the motor 73 rotates, so that the first shaft 331 drives the lower pre-pressing roller 33 to rotate, the first shaft 331 drives all the lower press rollers 22 to rotate through the driving gear 71 and the driving belt 72, a worker pushes the steel plate from a feeding position to between the upper pre-pressing roller 31 and the lower pre-pressing roller 33, two sides of the steel plate respectively abut against the two limiting plates 4, at this time, the pre-pressing knife ring 32 on the upper pre-pressing roller 31 extrudes the steel plate to form a crease, the indentation ring 5 presses the upper surface of the steel plate to form an indentation, the steel plate continuously enters between the upper press roller 21 and the lower press roller 22, the outer walls of all the upper press rollers 21 and the outer walls of all the lower press rollers 22 jointly extrude the steel plate to enable the steel plate to be subjected to angle folding along the crease and to gradually increase the angle, thereby finishing the angle folding step and ensuring the angle folding position of the steel plate and the angle folding precision of the steel plate each time.

When workers need to process steel plates with different thicknesses, the workers twist the rotating handle 65 to drive the corresponding screw rods 61 to rotate linearly, the screw rods 61 are meshed with the synchronous belt 64 through the synchronous gears 63 to drive the other synchronous gear 63 to rotate and further drive the other screw rod 61 to rotate, the screw rods 61 are in threaded fit with the sliding frame 11, so that the sliding frame 11 is driven to move on the guide rods 62, the distance between the upper pressing roller 21 and the lower pressing roller 22 and the distance between the upper prepressing roller 31 and the lower prepressing roller 33 are changed, and the steel plate processing machine is suitable for processing steel plates with different thicknesses.

When the worker needs to replace the indentation ring 5, first, the worker presses the second roller body 312 to keep it stationary, and then rotates the third roller body 314, so that the screw ring 52 is separated from the screw groove 53.

Then, the worker pushes the third roller body 314 to slide on the third shaft 313 so that the gap between the third shaft 313 and the second shaft 311 is exposed, the worker pulls the indentation ring 5 out of the annular receiving groove 51, the catching block 54 is separated from the catching groove 55, and the indentation ring 5 is taken out by the worker through the gap between the third shaft 313 and the second shaft 311.

Then, the worker inserts a new indentation ring 5 into the annular receiving groove 51 on the second shaft 311, so that the clamping block 54 is inserted into the clamping groove 55, the worker pushes the third roller 314 to move towards the second roller 312 on the third shaft 313, the worker presses the second roller 312 and rotates the third roller 314, the threaded ring 52 is completely in threaded connection with the threaded groove 53, the end portions of the third roller 314 and the second roller 312 are abutted against each other, the third roller 314 and the second roller 312 form the complete annular receiving groove 51 to embed the indentation ring 5, and therefore the worker can replace the indentation ring 5 conveniently.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a protective shroud dog-ear device, includes frame (1), is equipped with steel sheet dog-ear subassembly (2) that a plurality of arranged in proper order along the horizontal direction on frame (1), steel sheet dog-ear subassembly (2) include from last to rotating in proper order down and connect in last compression roller (21) and lower compression roller (22) of frame (1), go up compression roller (21) and be the interval setting with lower compression roller (22), the lateral wall of going up compression roller (21) is outer convex, and the lateral wall of lower compression roller (22) is interior concavity, frame (1) is established respectively to feed department and ejection of compact department along the both ends of steel sheet dog-ear subassembly (2) direction of arranging, and the angle of buckling of every group steel sheet dog-ear subassembly (2) is located the discharge department from the feed and is crescent, its characterized in that: be equipped with pre-compaction subassembly (3) on frame (1), pre-compaction subassembly (3) are including rotating to be connected in last pre-compression roller (31) and lower pre-compression roller (33) of frame (1), go up the axial of pre-compression roller (31) with the axial of pre-compression roller (33) all is the same with the axial of last compression roller (21) down, go up pre-compression roller (31) and be interval setting from top to bottom with lower pre-compression roller (33), be equipped with pre-compaction sword ring (32) on the lateral wall of going up pre-compression roller (31), set up on pre-compression roller (33) down with pre-compaction sword ring (32) corresponding pre-compaction annular (34), the both ends of pre-compression roller (33) all are equipped with limiting plate (4) that are used for conflicting steel sheet both sides.

2. A retainer return device as in claim 1, wherein: lower pressure roller (33) include first roll body (332) and first axle (331), two limiting plate (4) are all slided and are established on first axle (331), be equipped with sleeve (41) that the slip is being overlapped on first axle (331) on limiting plate (4), threaded connection has and is used for supporting sleeve (41) tightly locking bolt (42) on first axle (331) on sleeve (41).

3. A retainer return device as in claim 1, wherein: and an indentation ring (5) for pressing an impression on the surface of the steel plate is sleeved on the side wall of the upper prepressing roll (31).

4. A retainer return angle device as defined in claim 3, wherein: go up pre-pressure roller (31) including second roll body (312), third roll body (314), second shaft (311), third axle (313) that the coaxial line was arranged, second shaft (311) with third axle (313) all rotate and connect in frame (1), second roll body (312) link to each other with second shaft (311), third roll body (314) slip cover is established on third axle (313), form the clearance that supplies indentation circle (5) to take out between third axle (313) and second axle (311), third roll body (314) are provided with screw thread ring (52) towards the one end coaxial line of second roll body (312), screw thread groove (53) that supply screw thread ring (52) threaded connection are seted up towards the one end of third roll body (314) in second roll body (312).

5. A retainer return angle device as defined in claim 4, wherein: and the opposite ends of the third roller body (314) and the second roller body (312) are provided with annular accommodating grooves (51) for the sliding insertion of the indentation rings (5).

6. A retainer return angle device as defined in claim 5, wherein: the groove wall of the annular accommodating groove (51) corresponding to the second roller body (312) is provided with a clamping block (54), and the indentation ring (5) is provided with a clamping groove (55) for clamping the clamping block (54).

7. A retainer return device as in claim 1, wherein: the frame (1) comprises a sliding frame (11) and a fixed frame (12) which are arranged from top to bottom, all the upper pressing rollers (21) and the upper prepressing rollers (31) are rotationally connected to the sliding frame (11), all the lower pressing rollers (22) and the lower prepressing rollers (33) are rotationally connected to the fixed frame (12), the fixed frame (12) is provided with a lifting component (6) which drives the sliding frame (11) to move along the vertical direction, the lifting component (6) comprises two screw rods (61) which are rotationally connected with the fixed frame (12), the two screw rods (61) are respectively positioned at two sides of the upper prepressing roller (31), the screw rod (61) is vertically arranged and is in threaded connection with the sliding frame (11), the fixed frame (12) is provided with a guide rod (62) extending along the vertical direction, the guide rod (62) is vertically arranged and penetrates through the sliding frame (11) in a sliding mode.

8. A retainer return angle device as defined in claim 7, wherein: the upper ends of the two screw rods (61) are coaxially provided with synchronous gears (63), and the two synchronous gears (63) are meshed with a common synchronous belt (64).

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