CN215314887U

CN215314887U - Arc rolling machine

Info

Publication number: CN215314887U
Application number: CN202023260637.4U
Authority: CN
Inventors: 郑云头; 郑曾; 孙林贵
Original assignee: Nanjing Mancheng Photoelectric Technology Co ltd
Current assignee: Nanjing Mancheng Photoelectric Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-12-28
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses an arc rolling machine which comprises a rack, two driving rollers, a main driving motor, a first lifting frame, a second lifting frame, a compression roller and a lifting driving motor, wherein the two driving rollers are arranged on the rack; the two driving rollers are arranged in parallel, and both ends of the two driving rollers are rotatably connected with the frame; the main driving motor drives the two driving rollers to synchronously rotate; the first lifting frame is arranged at one end of the rack and forms a vertical moving pair with the rack; the second lifting frame is arranged at the other end of the rack and forms a vertical moving pair with the rack, and the upper end of the second lifting frame is provided with a rotating frame; one end of the compression roller is rotatably connected with the first lifting frame, and the other end of the compression roller can be rotatably connected with the rotating frame; the lifting driving motor drives the first lifting frame and the second lifting frame to synchronously and vertically slide for adjusting the distance between the press roller and the driving roller. The utility model is provided with a first lifting frame and a second lifting frame which synchronously and vertically slide and are used for driving the press roll to move up and down, and the universality of the utility model is improved by adjusting the distance between the press roll and the drive roll.

Description

Arc rolling machine

Technical Field

The utility model relates to an arc rolling machine, and belongs to the technical field of plate processing machinery.

Background

The arc rolling machine is one of the common tools in machining, such as machining a dome and the like, rolling a steel plate into an arc shape and splicing the steel plate into a hemispherical shape, and the structure of the arc rolling machine comprises a frame, two driving rollers and a pressing roller, wherein the driving rollers are driven by a motor to rotate relative to the frame, on one hand, the driving rollers are used for supporting the steel plate, on the other hand, the steel plate is conveyed when in use, so that the steel plate moves on the arc rolling machine, the pressing roller presses the steel plate downwards from the upper part of the steel plate when the steel plate rolls the arc, so that the steel plate is bent and deformed, and the steel plate is prevented from shaking up and down, only one end of the pressing roller of the conventional arc rolling machine can move up and down, the other end of the pressing roller can be detachably connected by adopting a fixing piece which is rotatably connected with the frame, both ends of the pressing roller are connected with the frame when the arc is rolled by overturning the connecting piece, one end of the pressing roller is suspended, and at the moment, the steel plate after the arc rolling can be conveniently dismounted from the driving roller and the pressing roller, because the compression roller only has one end to adjust from top to bottom, for guaranteeing to be connected with the frame at the both ends of rolling up the arc in-process compression roller, must make the compression roller remove to same high department, consequently the arc machine of rolling up of prior art is applicable only in the arc operation of rolling up of same thickness steel sheet, and its commonality is relatively poor, and because the compression roller only one end liftable is the same, the distance between its both ends and the drive roll is difficult to accomplish unanimously at every turn, make the steel sheet receive everywhere the pressure different, the quality that the arc was rolled up to the steel sheet is relatively poor.

Disclosure of Invention

The utility model aims to provide an arc rolling machine, which solves the technical defects of poor universality and low arc rolling quality of steel plates of the arc rolling machine in the prior art.

In order to solve the problems, the technical scheme adopted by the utility model is as follows: the arc rolling machine comprises a rack, two driving rollers, a main driving motor, a first lifting frame, a second lifting frame, a compression roller and a lifting driving motor; the two driving rollers are arranged in parallel, and both ends of the two driving rollers are rotatably connected with the frame; the main driving motor drives the two driving rollers to synchronously rotate; the first lifting frame is arranged at one end of the rack and forms a vertical moving pair with the rack; the second lifting frame is arranged at the other end of the rack and forms a vertical moving pair with the rack, and the upper end of the second lifting frame is provided with a rotating frame which can turn over relative to the second lifting frame; one end of the compression roller is rotatably connected with the first lifting frame, and the other end of the compression roller can be rotatably connected with the rotating frame; the lifting driving motor drives the first lifting frame and the second lifting frame to synchronously and vertically slide for adjusting the distance between the press roller and the driving roller. The first lifting frame and the second lifting frame can vertically slide relative to the rack, so that the distance between the press roll and the driving roll can be adjusted, the rolling arc processing of steel plates with different thicknesses is suitable, and the universality of the rolling arc processing machine is improved.

As a further improvement of the utility model, one end of the rotating frame is rotationally connected with the second lifting frame and synchronously moves along with the vertical movement of the second lifting frame, the other end of the rotating frame is provided with a mounting hole for matching with a mounting block rotationally connected with the end part of the compression roller, the rotating frame is turned over, and the mounting block at the end part of the compression roller can enter and exit the mounting hole. The rotating frame is turned, the mounting block at the end part of the compression roller extends into the mounting hole or is separated from the mounting hole, so that the rotating frame is conveniently connected with the compression roller, and the mounting block is arranged so that the compression roller and the rotating frame can rotate relatively.

As a further improvement of the utility model, the mounting hole is a rectangular hole, the mounting block is a rectangular block, the height of the mounting hole is greater than that of the mounting block when the rotating frame is in a vertical state, the pressing block is arranged in the mounting hole in a use state, the sum of the height of the pressing block and the height of the mounting block is equal to the height of the mounting hole, after the rotating frame is turned to the vertical state, the mounting block extends into the mounting hole, and the pressing block can be inserted into the mounting hole. The height of the mounting hole is larger than that of the mounting block, the mounting block cannot generate obstruction when the rotating frame is turned, the pressing block is arranged, and the mounting hole is filled in a use state, so that the mounting block cannot swing up and down in the mounting hole.

As a further improvement of the utility model, the device also comprises a fixed rod, wherein a fixed through hole communicated with the mounting hole is formed in the rotating frame, a lower half hole unit is formed in the top of the mounting block, an upper half hole unit is formed in the bottom of the pressing block, after the mounting block and the pressing block extend into the mounting hole, the lower half hole unit and the upper half hole unit form a limiting hole corresponding to the fixed through hole, and the fixed rod extends into the limiting hole from the fixed through hole and is used for limiting the mounting block and the pressing block in the mounting hole. The fixing rod is limited by the fixing through hole, and the fixing rod is matched with the limiting hole to limit the mounting block and the pressing block, so that the mounting block and the pressing block cannot horizontally move in the mounting hole due to vibration during the process of mixing, and the rotating frame cannot turn over in the using process.

As a further improvement of the utility model, the top end of the rotating frame is provided with a handle, and the handle is held by hand to turn the rotating frame. The utility model is provided with the handle, thereby being convenient for turning the rotating frame.

As a further improvement of the utility model, the end part of the fixed rod is provided with a limiting rod which is vertical to the fixed rod and is fixedly connected with the fixed rod. The utility model is provided with the limiting rod, and the fixing rod can be operated by holding the limiting rod by hand, so that the fixing rod can be used.

As a further improvement of the utility model, the press roll pressing device comprises two support columns, a support cross rod, a press rod and a screw rod, wherein two ends of the support cross rod are respectively fixed on the support columns, two ends of the press rod are arranged on the support columns and can vertically slide on the support columns, the screw rod penetrates through the support cross rod and is in threaded fit with the support cross rod, the bottom end of the screw rod is rotatably connected with the press rod, the screw rod rotatably drives the press rod to slide up and down along the support columns, one end of the press roll rotatably connected with the first lifting frame is connected with a connecting rod, one end of the connecting rod far away from the press roll extends into a position between the two support columns, and the press rod can downwardly press the connecting rod when sliding downwards. The utility model is provided with the pressing device, when the steel plate is processed and blanked, pressure is applied downwards from one end of the pressing roller, and the stability of the pressing roller during blanking is ensured.

As a further improvement of the utility model, the top end of the screw rod is provided with a handle, and the handle is held by hand to drive the screw rod to rotate. The handle is arranged, so that the screw rod can be conveniently rotated.

As a further improvement of the utility model, one end of each of the two driving rollers, which is positioned at the first lifting frame, is provided with a driven gear, the main driving motor is connected with a first speed reducer, an output shaft of the first speed reducer is provided with a driving gear, and the driving gear is meshed with the driven gears on the two driving rollers simultaneously. According to the utility model, the driving gear is meshed with the two driven gears, so that one driving motor drives the two driving rollers to synchronously rotate at the same time, and the two driving rollers have good rotation synchronism.

As a further improvement of the utility model, the bottom ends of the first lifting frame and the second lifting frame are respectively provided with a first worm wheel and a second worm wheel, the first worm wheel is in threaded connection with the bottom of the first lifting frame, the second worm wheel is in threaded connection with the bottom of the second lifting frame, the frame is rotatably provided with a connecting shaft, two ends of the connecting shaft are respectively provided with a first worm and a second worm, the first worm is meshed with the first worm wheel, the second worm is meshed with the second worm wheel, the lifting driving motor is connected with a second speed reducer, an output shaft of the second speed reducer is connected with the connecting shaft, the connecting shaft drives the first worm wheel and the second worm wheel to synchronously rotate, and the first worm wheel and the second worm wheel respectively drive the first lifting frame and the second lifting frame to synchronously and vertically slide. The first lifting frame and the second lifting frame are driven to vertically slide by the matching of the worm gear and the worm, and the first worm and the second worm are connected by the connecting shaft, so that one lifting driving motor can simultaneously drive the first lifting frame and the second lifting frame to synchronously vertically slide, and the structure of the utility model is simplified.

In conclusion, the beneficial effects of the utility model are as follows: the steel plate coil arc machining device is provided with the first lifting frame and the second lifting frame which synchronously and vertically slide, and are used for driving the press roll to move up and down, the universality of the steel plate coil arc machining device is improved by adjusting the distance between the press roll and the drive roll, and the steel plate coil arc machining device is convenient to discharge steel plates after coil arc machining.

Drawings

Fig. 1 is a schematic perspective view of a first angle of the present invention.

Fig. 2 is a schematic perspective view of a second angle according to the present invention.

Fig. 3 is a perspective view of a third angle of the present invention.

FIG. 4 is a schematic view showing the use state of the turret and the mounting block according to the present invention.

FIG. 5 is an exploded view showing the use of the turret and mounting block of the present invention.

Wherein: 1. a frame; 2. a drive roll; 3. a main drive motor; 4. a first lifting frame; 5. a second lifting frame; 6. a rotating frame; 7. a compression roller; 8. a lifting drive motor; 9. mounting holes; 10. mounting blocks; 11. briquetting; 12. fixing the rod; 13. a fixing through hole; 14. a lower half-bore unit; 15. an upper half-hole unit; 16. a handle; 17. a limiting rod; 18. a compression roller pressing device; 19. a support pillar; 20. a support rail; 21. a pressure lever; 22. a screw rod; 23. a connecting rod; 24. a handle; 25. a driven gear; 26. a first reduction motor; 27. a driving gear; 28. a first worm gear; 29. a second worm gear; 30. a connecting shaft; 31. a first worm; 32. a second worm; 33. and a second speed reducer.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

Example 1

The arc rolling machine shown in fig. 1 to 5 comprises a frame 1, two driving rollers 2, a main driving motor 3, a first lifting frame 4, a second lifting frame 5, a pressure roller 7 and a lifting driving motor 8; the two driving rollers 2 are arranged in parallel, two ends of each driving roller are rotatably connected with the frame 1 through bearings, and the main driving motor 3 drives the two driving rollers 2 to rotate synchronously; the first lifting frame 4 is arranged at one end, close to the main driving motor 3, of the rack 1 and forms a vertical moving pair with the rack 1, the second lifting frame 5 is arranged at the other end of the rack 1 and forms a vertical moving pair with the rack 1, the upper end of the second lifting frame 5 is provided with a rotating frame 6, and the rotating frame 6 can turn over relative to the second lifting frame 5; one end of the compression roller 7 is rotatably connected with the first lifting frame 4, and the other end of the compression roller 7 can be rotatably connected with the rotating frame 6; the lifting driving motor 8 drives the first lifting frame 4 and the second lifting frame 5 to synchronously and vertically slide for adjusting the distance between the compression roller 7 and the driving roller 2. This embodiment is when using, and upset rotating turret 6 makes rotating turret 6 and compression roller 7 break away from mutually, so can take out the steel sheet that the processing was accomplished from the one end of compression roller 7, and when the processing steel sheet, upset rotating turret 6 makes in compression roller 7 tip stretches into rotating turret 6, carries on spacingly to its tip by rotating turret 6, prevents that the tip of compression roller 7 from because unsettled swing when using, influences the book arc quality of steel sheet.

In this embodiment, one end of the rotating frame 6 is rotatably connected with the second lifting frame 5 and moves synchronously along with the vertical movement of the second lifting frame 5, the other end of the rotating frame 6 is provided with a mounting hole 9 for matching with a mounting block 10 rotatably connected with the end part of the compression roller 7, the rotating frame 6 is turned, and the mounting block 10 at the end part of the compression roller 7 can enter and exit the mounting hole 9.

The machine frame in the embodiment comprises an upper machine frame and a lower machine frame, wherein the upper machine frame comprises two upper machine frame units, the two upper machine frame units are detachably arranged at two ends of the lower machine frame respectively by a plurality of bolts, two ends of a driving roller 2 are respectively rotatably arranged on the two upper machine frame units by bearings, the upper machine frame units are provided with mounting grooves, the driving roller 2 is symmetrically arranged at the left side and the right side of the mounting groove, the bottom of the mounting groove is downwards provided with a crane mounting through hole, the top of a second crane 5 is fixedly provided with a connector, the bottom of the rotating frame 6 is provided with a mounting notch, the connector extends into the mounting notch and is arranged on the connector by a rotating shaft, two side surfaces of the mounting notch in the embodiment are vertical planes, two end surfaces of the connector are in clearance fit with two vertical planes of the mounting notch, so as to avoid the situation that the mounting notch is connected with the connector too tightly to influence the rotation of the rotating frame 6, in this embodiment, the two side walls of the mounting groove are vertical surfaces, and the surfaces of the two sides of the rotating frame 6 are matched, so that the second lifting frame 5 can only move up and down relative to the upper frame unit and can not rotate relative to the upper frame unit. The cross section of the upper part of the first lifting frame 4 in the embodiment is rectangular, and the first lifting frame is matched with the mounting groove on the upper frame unit and is used for being rotatably connected with the compression roller 7 by adopting a bearing.

The mounting hole 9 in this embodiment is the rectangular hole, the installation piece 10 is the rectangular block, and be in under vertical state at the rotating turret 6, the height that highly is greater than installation piece 10 of mounting hole 9, be provided with briquetting 11 under the in-use state in the mounting hole 9, briquetting 11's height equals with the height of mounting hole 9 with the sum of the height of installation piece 10, after rotating turret 6 overturns to vertical state, installation piece 10 stretches into in the mounting hole 9, briquetting 11 can insert in the mounting hole 9, because briquetting 11 and installation piece 10 have been full of mounting hole 9 under the in-use state, consequently rotating turret 6 can not overturn by oneself under the in-use state.

In order to improve the safety of the present embodiment, the pressing block 11 is prevented from moving from the installation hole 9 due to vibration during use, the present embodiment is provided with a fixing rod 12, the rotating frame 6 of the present embodiment is provided with a fixing through hole 13 communicated with the installation hole 9, the top of the installation block 10 is provided with a lower half-hole unit 14, the bottom of the pressing block 11 is provided with an upper half-hole unit 15, both the lower half-hole unit 14 and the upper half-hole unit 15 in the present embodiment are semicircular holes, after the installation block 10 and the pressing block 11 extend into the installation hole 9, the lower half-hole unit 14 and the upper half-hole unit 15 form a circular limiting hole corresponding to the fixing through hole 13, the fixing rod 12 extends into the limiting hole from the fixing through hole 13 for limiting the installation block 10 and the pressing block 11 in the installation hole 9, so that the pressing block 11 cannot move horizontally due to vibration during use, ensuring that the pressing block 11 cannot fall off from the installation hole 9, when the rotating frame 6 needs to be turned over, the fixing rod 12 is pulled out from the fixing through hole 13 and the limiting hole, and the pressing block 11 can be moved from the mounting hole 9.

In order to facilitate the turning of the rotating frame 6, in the present embodiment, a handle 16 is provided at the top end of the rotating frame 6, the handle 16 is held by hand for turning the rotating frame 6, and the handle 16 is shaped like "Jiong". In order to facilitate the use of the fixing rod 12, in the present embodiment, a limiting rod 17 is disposed at an end of the fixing rod 12, the limiting rod 17 is perpendicular to the fixing rod 12 and is fixedly connected to the fixing rod 12, and the limiting rod 17 and the fixing rod 12 are preferably fixed by welding in the present embodiment.

In order to improve the stability of the press roll 7 during blanking, the embodiment is provided with a press roll pushing device 18, the press roll pushing device 18 includes two support columns 19, a support cross rod 20, a press rod 21 and a screw rod 22, two ends of the support column 19 are welded and fixed on the lower frame, two ends of the support cross rod 20 are respectively welded and fixed on the support columns 19, two ends of the press rod 21 are arranged on the support columns 19 and can vertically slide on the support columns 19, in the embodiment, preferably, two ends of the press rod 21 are respectively provided with a sliding through hole, the support column 19 passes through the sliding through holes, so that the press rod 21 can vertically slide on the support column 19, the screw rod 22 in the embodiment passes through the support cross rod 20 and is in threaded fit with the support cross rod 20, the screw rod 22 is positioned between the two support columns 19 and is parallel to the support columns 19, the bottom end of the screw rod 22 is rotatably connected with the press rod 21, the screw rod 22 rotatably drives the press rod 21 to slide up and down along the support columns 19, the compression roller 7 rotates the one end of being connected with connecting rod 23 with first crane 4, and the one end that the compression roller 7 was kept away from to connecting rod 23 stretches into between two spinal branch daggers 19, and depression bar 21 lapse can be pushed down connecting rod 23, and when the rotating turret 6 overturn to break away from mutually with compression roller 7, depression bar 21 lapse connecting rod 23, ensures that compression roller 7 is stable, the unloading of the steel sheet of conveniently having processed.

In the present embodiment, a handle 24 is preferably disposed at the top end of the screw rod 22, and the handle 24 is held by hand to drive the screw rod 22 to rotate, and the handle 24 in the present embodiment facilitates the manual driving of the screw rod 22 to rotate.

The embodiment realizes that a main driving motor 3 drives two driving rollers 2 to rotate, and the concrete structure is as follows: one end of each of the two driving rollers 2, which is positioned at the first lifting frame 4, is provided with a driven gear 25, the output shaft of the main driving motor 3 is connected with a first speed reducer 26, the output shaft of the first speed reducer 26 is provided with a driving gear 27, the driving gear 27 is simultaneously meshed with the driven gears 25 on the two driving rollers 2, the main driving motor 3 and the first speed reducer 26 in the embodiment are both arranged on the lower frame, the major diameter of the driven gear 25 in the embodiment is smaller than that of the driving gear 27, and the two driven gears 25 are equal in size and number of teeth, the two driven gears 25 are respectively positioned at the left and right sides above the driving gear, the main driving motor 3 drives a first speed reducer 26, the two driving rollers 2 are driven to rotate synchronously by driving the driving gear 27 and the two driven gears 25 engaged with the driving gear 27, which are driven to rotate synchronously by the driving gear 27 after being decelerated by the first speed reducer 26.

The concrete structure that this embodiment realizes that 8 drive first crane 4 of lift driving motor and second crane 5 go up and down in step is: the bottom ends of the first lifting frame 4 and the second lifting frame 5 are respectively provided with a first worm wheel 28 and a second worm wheel 29, wherein the first worm wheel 28 and the second worm wheel 29 are respectively rotatably arranged at two ends of the lower rack, the first worm wheel 28 is in threaded connection with the bottom of the first lifting frame 4, the second worm wheel 29 is in threaded connection with the bottom of the second lifting frame 5, the rack 1 is rotatably provided with a connecting shaft 30, two ends of the connecting shaft 30 are respectively provided with a first worm 31 and a second worm 32 by adopting a coupler, the first worm 31 is meshed with the first worm wheel 28, the second worm 32 is meshed with the second worm wheel 29, the lifting driving motor 8 is connected with a second speed reducer 33, an output shaft of the second speed reducer 33 is connected with the connecting shaft 30, the connecting shaft 30 drives the first worm wheel 28 and the second worm wheel 29 to synchronously rotate, and the first worm wheel 28 and the second worm wheel 29 respectively drive the first lifting frame 4 and the second lifting frame 5 to synchronously and vertically slide. In the embodiment, the rotating shafts of the first worm wheel 28 and the second worm wheel 29 are rotatably connected with the lower rack by adopting bearings, the lower part of the first lifting frame 4 passes through the rotating shaft of the first worm wheel 28 and is in threaded fit with the rotating shaft of the first worm wheel 28, the lower part of the second lifting frame 5 passes through the rotating shaft of the second worm wheel 29 and is in threaded fit with the rotating shaft of the second worm wheel 29, and because the tops of the first lifting frame 4 and the second lifting frame 5 and the upper rack can only vertically slide but cannot rotate, when the first worm wheel 28 and the second worm wheel 29 rotate, the first lifting frame 4 and the second lifting frame 5 cannot rotate along with the rotation of the first lifting frame 4 and the second lifting frame 5 and can only move up and down, so that the up and down movement of the press roller 7 is realized.

Example 2

The embodiment is a further improvement on the basis of the embodiment 1, compared with the embodiment 1, the embodiment is provided with two pressing blocks 11 in the installation hole 9, the two pressing blocks 11 are symmetrically arranged on the upper side and the lower side of the installation block 10 when in use, when the rotating frame 6 is turned, the upper pressing block 11 and the lower pressing block 11 are drawn out from the installation hole 9, the installation block 10 has enough space for the installation block to be conveniently moved out from the installation hole 9, the turning of the rotating frame 6 is smoother and unimpeded, when in use, the pressing block 11 below can be supported from the lower side of the installation block 10, and the stability in use is improved. The structure of the rest of this embodiment is the same as that of embodiment 1, and embodiment 1 may be referred to specifically, and details are not repeated in this embodiment.

Parts which are not specifically described in the above description are prior art or can be realized by the prior art. The specific embodiments of the present invention are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the contents of the claims of the present invention should be regarded as the technical scope of the present invention.

Claims

1. Roll up arc machine, its characterized in that: comprises that

A frame (1);

the two driving rollers (2) are arranged in parallel, and two ends of each driving roller (2) are rotatably connected with the rack (1);

the main driving motor (3), the main driving motor (3) drives the two driving rollers (2) to synchronously rotate;

the first lifting frame (4) is arranged at one end of the rack (1), and the first lifting frame (4) and the rack (1) form a vertical moving pair;

the second lifting frame (5) is arranged at the other end of the rack (1) and forms a vertical moving pair with the rack (1), a rotating frame (6) is arranged at the upper end of the second lifting frame (5), and the rotating frame (6) can turn over relative to the second lifting frame (5);

one end of the compression roller (7) is rotatably connected with the first lifting frame (4), and the other end of the compression roller (7) can be rotatably connected with the rotating frame (6);

the lifting driving motor (8) drives the first lifting frame (4) and the second lifting frame (5) to synchronously and vertically slide, and is used for adjusting the distance between the compression roller (7) and the driving roller (2).

2. The arc curling machine of claim 1, wherein: one end of the rotating frame (6) is rotatably connected with the second lifting frame (5) and moves synchronously along with the vertical movement of the second lifting frame (5), the other end of the rotating frame (6) is provided with a mounting hole (9) for being matched with a mounting block (10) rotatably connected with the end part of the compression roller (7), the rotating frame (6) is turned, and the mounting block (10) at the end part of the compression roller (7) can enter and exit the mounting hole (9).

3. The arc curling machine of claim 2, wherein: mounting hole (9) are the rectangular hole, installation piece (10) are the rectangular block, and be in under vertical state at rotating turret (6), the height that highly is greater than installation piece (10) of mounting hole (9), be provided with briquetting (11) under the inherent user state of mounting hole (9), the height sum of highly and the installation piece (10) of briquetting (11) and the height of mounting hole (9) equal, after rotating turret (6) upset to vertical state, installation piece (10) stretch into in mounting hole (9), briquetting (11) can insert in mounting hole (9).

4. The arc curling machine of claim 3, wherein: the fixing device is characterized by further comprising a fixing rod (12), a fixing through hole (13) communicated with the mounting hole (9) is formed in the rotating frame (6), a lower half-hole unit (14) is formed in the top of the mounting block (10), an upper half-hole unit (15) is formed in the bottom of the pressing block (11), the mounting block (10) and the pressing block (11) stretch into the mounting hole (9), then the lower half-hole unit (14) and the upper half-hole unit (15) form a limiting hole corresponding to the fixing through hole (13), and the fixing rod (12) stretches into the limiting hole from the fixing through hole (13) to limit the mounting block (10) and the pressing block (11) in the mounting hole (9).

5. The arc curling machine of claim 4, wherein: the top end of the rotating frame (6) is provided with a handle (16), and the handle (16) is held by hands and used for turning over the rotating frame (6).

6. The arc curling machine of claim 4, wherein: the end part of the fixed rod (12) is provided with a limiting rod (17), and the limiting rod (17) is vertical to the fixed rod (12) and is fixedly connected with the fixed rod (12).

7. The arc rolling machine according to any one of claims 1 to 6, wherein: also comprises a press roller pressing device (18), the press roller pressing device (18) comprises two support columns (19) and a support cross rod (20), one depression bar (21) and lead screw (22), the both ends of supporting horizontal pole (20) are fixed respectively on support column (19), the both ends setting of depression bar (21) is on support column (19) and can be on support column (19) vertical slip, lead screw (22) pass support horizontal pole (20) and with support horizontal pole (20) screw-thread fit, the bottom and depression bar (21) of lead screw (22) rotate to be connected, lead screw (22) rotate drive depression bar (21) and slide from top to bottom along support column (19), compression roller (7) are connected with connecting rod (23) with the one end of first crane (4) rotation connection, the one end that compression roller (7) were kept away from in connecting rod (23) stretches into between two support columns (19), depression bar (21) lapse can push down connecting rod (23).

8. The arc curling machine of claim 7, wherein: the top end of the screw rod (22) is provided with a handle (24), and the handle (24) is held by hand to drive the screw rod (22) to rotate.

9. The arc rolling machine according to any one of claims 1 to 6, wherein: one end of each of the two driving rollers (2) located at the first lifting frame (4) is provided with a driven gear (25), the main driving motor (3) is connected with a first speed reducer (26), an output shaft of the first speed reducer (26) is provided with a driving gear (27), and the driving gear (27) is meshed with the driven gears (25) on the two driving rollers (2) simultaneously.

10. The arc rolling machine according to any one of claims 1 to 6, wherein: the bottom of the first lifting frame (4) and the bottom of the second lifting frame (5) are respectively provided with a first worm wheel (28) and a second worm wheel (29), the first worm wheel (28) is in threaded connection with the bottom of the first lifting frame (4), the second worm wheel (29) is in threaded connection with the bottom of the second lifting frame (5), a connecting shaft (30) is arranged on the rack (1) in a rotating mode, two ends of the connecting shaft (30) are respectively provided with a first worm (31) and a second worm (32), the first worm (31) is meshed with the first worm wheel (28), the second worm (32) is meshed with the second worm wheel (29), the lifting driving motor (8) is connected with a second speed reducer, an output shaft of the second speed reducer is connected with the connecting shaft (30), the connecting shaft (30) drives the first worm wheel (28) and the second worm wheel (29) to rotate synchronously, and the first worm wheel (28) and the second worm wheel (29) respectively drive the first lifting frame (4) and the second lifting frame (5) to slide synchronously and vertically.