CN114393467B

CN114393467B - Automatic edging device for steel heat-insulation fireproof door

Info

Publication number: CN114393467B
Application number: CN202210308335.4A
Authority: CN
Inventors: 季丽芬
Original assignee: Jiangsu Jiutai Fire Equipment Co ltd
Current assignee: Jiangsu Jiutai Fire Equipment Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-06-14
Anticipated expiration: 2042-03-28
Also published as: CN114393467A

Abstract

The invention relates to the technical field of fireproof door processing, in particular to an automatic edge grinding device for a steel heat-insulation fireproof door, which comprises a clamping frame, two circular grinding frames and edge grinding rotating frames, wherein the two circular grinding frames are distributed oppositely, the edge grinding rotating frames are rotatably arranged in the middle of the circular grinding frames, and the clamping frame is fixedly arranged at one end of each of the opposite sides of the circular grinding frames. The invention can perform sanding treatment on any position of the outer surface of the fireproof door through the rotating clamping frame, wherein the steering hydraulic cylinder controls the clamping frame to rotate left and right so as to perform sanding treatment on the left and right side walls of the fireproof door, and the rotating hydraulic cylinder controls the clamping frame to rotate up and down so as to perform sanding treatment on the upper and lower end surfaces of the fireproof door.

Description

Automatic edging device of steel heat-insulation fireproof door

Technical Field

The invention relates to the technical field of fireproof door processing, in particular to an automatic edge grinding device for a steel heat-insulation fireproof door.

Background

The fireproof door is characterized in that a door frame and a door panel are made of steel materials, the door panel comprises a door leaf framework and a door leaf panel, if materials are filled in the door leaf, fireproof heat insulation materials which are nontoxic and harmless to human bodies are filled in the door leaf, and a door with fireproof performance is formed by matching fireproof hardware fittings.

Prevent that fire door plant surface has burr and surperficial unsmooth, consequently need carry out dull polish processing through edging device to preventing fire door surface to make its surperficial smooth level and smooth, no burr, present fire prevention edging mode is fixed with preventing fire door centre gripping earlier, then carries out dull polish to certain terminal surface and handles, then can not carry out dull polish processing to all the other several terminal surfaces, and the limitation is big.

Prevent fire door and its surface is still comparatively crude after carrying out the corase grind through the edging device and handling to smooth leveling, consequently a lot of producers carry out the secondary finish grinding after the corase grind to preventing fire door, and the edging execution end of current edging device most all is the dull polish piece of a specification, can only carry out corase grind or finish grinding to preventing fire door, needs the manual work to change different rough grind pieces or smart grind piece.

Disclosure of Invention

The invention provides an automatic edge grinding device for a steel heat-insulation fireproof door, which can solve the above-mentioned problems.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an automatic edging device of steel heat-insulating fireproof door, rotates the frame including centre gripping frame, circular mill frame and edging, circular mill frame quantity is two and the two relative distribution, circular mill frame mid-rotation installs the edging and rotates the frame, and circular mill frame is mutually away from one end fixed mounting with the centre gripping frame, circular mill frame and edging rotate the frame and be one end open-ended drum structure, and the edging rotates the frame and is located the centre gripping frame, the edging rotate the frame lateral wall and be provided with annular outer ring gear, annular outer ring gear and drive gear outer toothing, drive gear installs on the output that rotates the motor, it installs on centre gripping frame inner wall to rotate the motor.

Circular mill frame internal rotation is provided with the rotating circular disc, and rotates the circular disc and be connected with the edging rotating frame, the rotating circular disc is kept away from the one end of centre gripping frame and is installed annular mount pad, install annular dull polish dish through the detachable mode on the annular mount pad, centre gripping frame one end back of the body is connected with supports coupling mechanism.

The supporting and connecting mechanism comprises clamping cylinders, supporting connecting rods, a steering hydraulic cylinder, a triangular connecting plate and rotating assemblies, the rotating assemblies are arranged on the opposite sides of the two clamping frames, the rotating assembly positioned at the front end of the fire door is arranged on the right side of the clamping frames, the left side of the rotating component is connected with a triangular connecting plate, the rotating component positioned at the rear end of the fire door is arranged at the left side of the clamping frame, and the right side of the rotating component is connected with a triangular connecting plate, one end of the triangular connecting plate far away from the rotating component is connected with one end of the supporting connecting rod, and the other end of the supporting connecting rod is arranged in a clamping cylinder in a sliding way, the clamping cylinder is connected with the prior moving mechanism, and a steering hydraulic cylinder is arranged between the support connecting rod and the clamping frame, and two ends of the steering hydraulic cylinder are hinged with one end of the clamping frame back to the back and the outer wall of the support connecting rod respectively.

As a preferred technical scheme, a circular mounting seat is arranged on one side, away from an edging rotating frame, of a rotating disc and is located in an annular mounting seat, a circular sanding disc is detachably mounted on one side, away from the rotating disc, of the circular mounting seat, a guide block of a square structure is connected to the middle of one side, facing the rotating disc, of the circular mounting seat, the guide block penetrates through the rotating disc, an auxiliary plate is arranged at one end, located in the edging rotating frame, of the guide block, the auxiliary plate is connected with the output end of a jacking hydraulic cylinder, and the fixed end of the jacking hydraulic cylinder is mounted in the edging rotating frame.

As a preferred technical scheme of the invention, the rotating assembly comprises a rotating seat, a rotating rod, a rotating block, a positioning column, a positioning matching seat and an elastic arc sheet, wherein the vertically-arranged rotating seat is installed at one end, away from the circular grinding frame, of the clamping frame, the positioning matching seat is arranged in the rotating seat in a sliding mode, the elastic arc sheet is arranged between the positioning matching seat and the rotating seat, the positioning column is installed at one end, away from the clamping frame, of the positioning matching seat, the rotating block is installed at one end, away from the supporting connecting rod, of the triangular connecting plate, the rotating block is installed on the rotating seat in a rotating mode through the rotating rod, and the rotating block is matched with the positioning column.

As a preferable technical scheme of the invention, one end of the rotating block, which is far away from the triangular connecting plate, and one end of the rotating block, which is towards the clamping frame, are both provided with semicircular cambered surface structures, the rotating block is matched with a positioning column on the positioning matching seat through the semicircular cambered surfaces, and the end surface of the rotating block, which is provided with the semicircular cambered surface structures, is matched with the end surface of the positioning matching seat, which is far away from the clamping frame.

As a preferable technical scheme of the invention, one end of the support connecting rod, which is far away from the triangular connecting plate, is provided with a limiting column, the outer side wall of the clamping cylinder is provided with a helical groove with a quarter pitch, the limiting column is arranged in the helical groove in a sliding manner, a limiting hydraulic cylinder is arranged in the clamping cylinder, and the output end of the limiting hydraulic cylinder is rotatably connected with one end of the support connecting rod, which is far away from the triangular connecting plate.

As a preferable technical scheme of the invention, one side of the circular grinding frame, which is far away from the clamping frame, is provided with an annular pressing strip, a spring rod is connected between the annular pressing strip and the circular grinding frame, and one end of the annular pressing strip, which is far away from the spring rod, is uniformly provided with a plurality of rolling steel balls in the circumferential direction.

As a preferred technical scheme of the invention, a separating ring is arranged in the circular edge grinding frame and is in running fit with the rotating disc, and an annular electromagnet is arranged on the inner bottom wall of the circular edge grinding frame and is positioned at the outer side of the separating ring.

As a preferable technical solution of the present invention, the sum of the thickness of the circular mounting seat and the thickness of the circular sanding disc is smaller than the sum of the thickness of the annular mounting seat and the thickness of the annular sanding disc.

The invention has the beneficial effects that: 1. the invention can perform sanding treatment on any position of the outer surface of the fire door through the rotating clamping frame, wherein the steering hydraulic cylinder controls the clamping frame to rotate left and right so as to perform sanding treatment on the left and right side walls of the fire door, and the limiting hydraulic cylinder controls the clamping frame to rotate up and down so as to perform sanding treatment on the upper and lower end surfaces of the fire door.

2. According to the invention, the annular sanding disc or the circular sanding disc can be in closer contact with the surface of the fireproof door through the annular electromagnet, so that the annular sanding disc or the circular sanding disc can effectively sand the fireproof door, and meanwhile, the annular electromagnet can timely adsorb debris generated when the annular sanding disc or the circular sanding disc sand the fireproof door.

3. The rotating block is matched with the positioning columns on the positioning matching seats through the two vertically-distributed semicircular cambered surface structures, so that the clamping frame can be ensured to rotate 90 degrees, the annular sanding disc or the circular sanding disc rotates 90 degrees along with the clamping frame, the left side wall, the right side wall, the upper end face and the lower end face of the fireproof door can be effectively sanded, and meanwhile, when the annular sanding disc or the circular sanding disc sands the surface of the fireproof door, the rotating block can be kept stable through the elastic cambered sheets, and the annular sanding disc or the circular sanding disc is kept stable.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top cross-sectional view of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.

FIG. 4 is a cross-sectional view of the rotating block, the rotating base, the positioning post, the positioning mating base, the elastic arc piece and the clamping frame of the present invention.

FIG. 5 is a schematic structural view of the clamping frame, the rotating seat, the rotating block, the triangular connecting plate, the circular grinding frame and the annular pressing strip.

Fig. 6 is a schematic structural view of the edging rotating frame, the annular outer gear ring, the driving gear, the rotating motor, the circular edging frame and the annular pressing strip of the present invention.

FIG. 7 is a schematic structural diagram of a circular grinding frame, an annular electromagnet, a partition ring, a rotating disk, an annular mounting seat, an annular grinding disk, and a circular mounting seat and a circular grinding disk in the invention.

FIG. 8 is a schematic structural view of a clamping cylinder, a clamping connecting rod, a limiting hydraulic cylinder, a triangular connecting plate, a rotating block, a spiral groove and a limiting column.

In the figure: 100. a fire door; 1. a clamping frame; 2. circularly grinding the frame; 21. an annular bead; 22. a spring lever; 23. rolling the steel ball; 24. a blocking ring; 25. an annular electromagnet; 3. edging the rotating frame; 31. an annular outer gear ring; 32. a drive gear; 33. rotating the motor; 41. rotating the disc; 42. an annular mounting seat; 43. an annular sanding disc; 51. a circular mounting seat; 52. a circular abrasive disk; 53. a guide block; 54. an auxiliary plate; 55. a jacking hydraulic cylinder; 61. clamping the cylinder; 611. a helical groove; 612. a limiting hydraulic cylinder; 62. a support link; 621. a limiting column; 63. a steering hydraulic cylinder; 64. a triangular connecting plate; 65. a rotating assembly; 651. a rotating seat; 652. rotating the rod; 653. rotating the block; 654. a positioning column; 655. positioning a matching seat; 656. an elastic arc piece.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.

The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the convention. Therefore, these terms are defined based on the entire contents of the present specification.

Referring to fig. 1, 2, 3, 5, 6 and 7, an automatic edging device for a steel heat-insulating fireproof door comprises a clamping frame 1, a circular grinding frame 2 and an edging rotating frame 3, wherein the two circular grinding frames 2 are distributed oppositely, the edging rotating frame 3 is rotatably mounted in the middle of the circular grinding frame 2, the clamping frame 1 is fixedly mounted at one end of the circular grinding frame 2 opposite to the edging rotating frame 2, the clamping frame 1, the circular grinding frame 2 and the edging rotating frame 3 are of a cylinder structure with an open end, the edging rotating frame 3 is positioned in the clamping frame 1, an annular outer gear ring 31 is arranged on the outer side wall of the edging rotating frame 3, the annular outer gear ring 31 is externally meshed with a driving gear 32, the driving gear 32 is mounted at the output end of a rotating motor 33, and the rotating motor 33 is mounted on the inner wall of the clamping frame 1; circular 2 internal rotations of frame of grinding are provided with and rotate disc 41, and rotate disc 41 and edging and rotate frame 3 and be connected, rotate disc 41 and keep away from the one end of clamping frame 1 and install annular mount pad 42, install annular dull polish dish 43 through the detachable mode on the annular mount pad 42, clamping frame 1 one end of carrying on the back mutually is connected with and supports coupling mechanism. During specific work, at first will treat the fire door 100 centre gripping of edging through current clamping device and fix, and ensure that fire door 100 keeps vertical state, current moving mechanism removes two centre gripping frame 1 respectively to fire door 100's front end and rear end through two support coupling mechanisms afterwards, ensure simultaneously that annular dull polish dish 43 on the annular mount pad 42 and fire door 100 end face contact in circular dull polish frame 2, then rotate motor 33 and drive gear 32 and rotate, make drive gear 32 drive annular outer ring gear 31 through the intermeshing and rotate, and then edging rotates frame 3 and drives rotation disc 41 synchronous revolution, make annular dull polish dish 43 begin to carry out dull polish processing to fire door 100 terminal surface, so that get rid of the burr and the unevenness face on fire door 100 surface.

Referring to fig. 3, one side of the rotating disc 41, which is far away from the edging rotating frame 3, is provided with a circular mounting seat 51, the circular mounting seat 51 is located in the annular mounting seat 42, one side of the circular mounting seat 51, which is far away from the rotating disc 41, is provided with a circular sanding disc 52 in a detachable manner, the middle of one side of the circular mounting seat 51, which faces the rotating disc 41, is connected with a guide block 53 of a square structure, the guide block 53 penetrates through the rotating disc 41, one end of the guide block 53, which is located in the edging rotating frame 3, is provided with an auxiliary plate 54, the auxiliary plate 54 is connected with the output end of a jacking hydraulic cylinder 55, and the fixed end of the jacking hydraulic cylinder 55 is installed in the edging rotating frame 3. When the fire door 100 surface is frosted for one time by the annular frosting disc 43, whether the fire door 100 surface needs to be refined for two times can be selected according to actual requirements to ensure that the fire door 100 surface is smooth and flat and has no burrs, the jacking hydraulic cylinder 55 pushes the guide block 53 to move towards the fire door 100 by pushing the auxiliary plate 54, and then the guide block 53 pushes the circular mounting seat 51 to move synchronously, so that the circular frosting disc 52 is contacted with the fire door 100 end surface, meanwhile, the edging rotating frame 3 drives the annular mounting seat 42 to move away from the fire door 100 by the jacking hydraulic cylinder 55 to ensure that the annular frosting disc 43 is separated from contacting with the fire door 100 surface, the invention sets the guide block 53 to be square structure to ensure that the circular mounting seat 51 can be driven to rotate synchronously by the guide block 53 when the rotating disc 41 rotates, so that the circular sanding disc 52 may sand the surface of the fire door 100.

Referring to fig. 3, the sum of the thickness of the circular mounting seat 51 and the thickness of the circular abrasive disk 52 is smaller than the sum of the thickness of the annular mounting seat 42 and the thickness of the annular abrasive disk 43; it is ensured that the annular abrasive disc 43 comes into contact with the end face of the fire door 100 when the circular mount 51 comes into contact with the rotary disk 41, while the circular abrasive disc 52 does not come into contact with the fire door 100.

Referring to fig. 3 and 7, a separating ring 24 is arranged in the circular grinding frame 2, the separating ring 24 is rotationally matched with the rotating disc 41, an annular electromagnet 25 is arranged on the inner bottom wall of the circular grinding frame 2, and the annular electromagnet 25 is positioned outside the separating ring 24; when centre gripping frame 1 removes circular mill frame 2 to the front end or the rear end of preventing fire door 100, annular electromagnet 25 circular mill frame 2 circular mill frame 43 of the drive in it moves towards preventing fire door 100, in order to ensure annular mill frame 43 and prevent fire door 100 contact, it leaves certain clearance to cut off between ring 24 and the fire door 100 this moment, make the piece that produces during the dull polish can fall into the below along the gap, so that annular electromagnet 25 can adsorb the piece, avoid the problem that the piece splashes everywhere.

Referring to fig. 3, 5, 6 and 7, an annular pressing strip 21 is arranged on one side of the circular grinding frame 2 away from the clamping frame 1, a spring rod 22 is connected between the annular pressing strip 21 and the circular grinding frame 2, and a plurality of rolling steel balls 23 are uniformly arranged on one end of the annular pressing strip 21 away from the spring rod 22 in the circumferential direction; when the annular frosting disc 43 or the circular frosting disc 52 frosts the surface of the fire door 100, the circular frosting frame 2 can be ensured to be kept stable by the annular batten 21, when the circular frosting frame 2 moves towards the fire door 100 under the action of the annular electromagnet 25, the spring rod 22 on the annular batten 21 is in a compressed state, and the rolling steel balls 23 on the annular batten 21 can prevent the annular batten 21 from directly contacting with the fire door 100 to reduce the friction force between the annular batten 21 and the fire door 100.

Referring to fig. 1, 2, 3, 5 and 8, the supporting and connecting mechanism includes a clamping cylinder 61, a supporting connecting rod 62, a steering hydraulic cylinder 63, a triangular connecting plate 64 and a rotating assembly 65, the two opposite sides of the clamping frame 1 are provided with the rotating assembly 65, the rotating assembly 65 at the front end of the fire door 100 is arranged at the right side of the clamping frame 1, the left side of the rotating assembly 65 is connected with the triangular connecting plate 64, the rotating assembly 65 at the rear end of the fire door 100 is arranged at the left side of the clamping frame 1, the right side of the rotating assembly 65 is connected with the triangular connecting plate 64, one end of the triangular connecting plate 64 far away from the rotating assembly 65 is connected with one end of the supporting connecting rod 62, the other end of the supporting connecting rod 62 is slidably arranged in the clamping cylinder 61, the clamping cylinder 61 is connected with the existing moving mechanism, the steering hydraulic cylinder 63 is arranged between the supporting connecting rod 62 and the clamping frame 1, and the two ends of the steering hydraulic cylinder 63 are hinged with one end of the clamping frame 1 back to the back and the outer wall of the supporting connecting rod 62 respectively. When the fireproof door 100 is in work, the supporting connecting rod 62 is driven to move by driving the clamping cylinder 61 through the existing moving mechanism, the triangular connecting plate 64 drives the clamping frame 1 to move through the rotating assembly 65, so that the annular abrasive disk 43 and the circular abrasive disk 52 can perform abrasive processing on the front end and the rear end of the fireproof door 100, when the left side wall and the right side wall of the fireproof door 100 are required to be subjected to abrasive processing, the steering hydraulic cylinder 63 outputs push the clamping frame 1, the clamping frame 1 rotates through the rotating assembly 65 until the annular abrasive disk 43 and the circular abrasive disk 52 rotate 90, the annular abrasive disk 43 and the circular abrasive disk 52 at the front end of the fireproof door 100 can perform abrasive processing on the left side wall of the fireproof door 100, and the annular abrasive disk 43 and the circular abrasive disk 52 at the rear end of the fireproof door 100 can perform abrasive processing on the right side wall of the fireproof door 100.

Referring to fig. 3, 4, 5 and 8, the rotating assembly 65 includes a rotating seat 651, a rotating rod 652, a rotating block 653, a positioning post 654, a positioning matching seat 655 and an elastic arc piece 656, wherein the vertically disposed rotating seat 651 is installed at one end of the clamping frame 1 away from the circular grinding frame 2, the positioning matching seat 655 is slidably disposed in the rotating seat 651, the elastic arc piece 656 is disposed between the positioning matching seat 655 and the rotating seat 651, the positioning post 654 is installed at one end of the positioning matching seat 655 away from the clamping frame 1, the rotating block 653 is installed at one end of the triangular connecting plate 64 away from the support connecting rod 62, the rotating block 653 is rotatably installed on the rotating seat 651 through the rotating rod 652, and the rotating block 653 is matched with the positioning post 654. The end of the rotating block 653, which is far away from the triangular connecting plate 64, and the end of the rotating block 653, which is facing the clamping frame 1, are both provided with semicircular arc structures, the rotating block 653 is matched with a positioning column 654 on the positioning matching seat 655 through a semicircular arc, and the end face of the rotating block 653, which is provided with the semicircular arc structure, is matched with the end face of the positioning matching seat 655, which is far away from the clamping frame 1. When the clamping frame 1 is pushed to rotate by the steering hydraulic cylinder 63, the semicircular cambered structures of the rotating blocks 653 abut against each other and push the positioning columns 654 to move towards the clamping frame 1, so that the rotating blocks 653 can smoothly rotate 90 degrees along the rotating rods 652, meanwhile, the semicircular cambered surfaces at the ends, away from the triangular connecting plate 64, of the rotating blocks 653 are matched with the positioning columns 654 under the matching of the elastic arc sheets 656, meanwhile, the end faces, provided with the semicircular cambered structures, of the rotating blocks 653 are matched with the end faces, away from the clamping frame 1, of the positioning matching seats 655, and therefore the rotating angle of the clamping frame 1 is ensured to be 90 degrees, and the rotating clamping frame 1 is limited and fixed.

Referring to fig. 8, a limiting column 621 is disposed at one end of the support link 62 away from the triangular link plate 64, a spiral groove 611 with a quarter pitch is disposed on an upper outer side wall of the clamping cylinder 61, the limiting column 621 is slidably disposed in the spiral groove 611, a limiting hydraulic cylinder 612 is mounted in the clamping cylinder 61, and an output end of the limiting hydraulic cylinder 612 is rotatably connected with one end of the support link 62 away from the triangular link plate 64. When the upper end face and the lower end face of the fire door 100 need to be sanded, the output end of the limiting hydraulic cylinder 612 pushes the supporting connecting rod 62 to move, meanwhile, the limiting column 621 on the supporting connecting rod 62 is in sliding fit with the spiral groove 611 with the quarter pitch, so that the supporting connecting rod 62 rotates 90 degrees along the axis of the supporting connecting rod 62, the annular sanding disc 43 and the circular sanding disc 52 synchronously rotate 90 degrees, the annular sanding disc 43 and the circular sanding disc 52 on one side of the fire door 100 can sand the upper end face of the fire door 100, and the annular sanding disc 43 and the circular sanding disc 52 on the other side of the fire door 100 can sand the lower end face of the fire door 100.

The invention comprises the following steps during working: the first step is as follows: firstly, the fire door 100 to be edged is clamped and fixed by the existing clamping device, and the fire door 100 is ensured to keep a vertical state, then the existing moving mechanism respectively moves the two clamping frames 1 to the front end and the rear end of the fire door 100 through the two supporting and connecting mechanisms, and simultaneously ensures that the annular abrasive disc 43 on the annular mounting seat 42 in the circular abrasive frame 2 is in end face contact with the fire door 100.

The second step: after the annular sanding disc 43 completes primary sanding treatment on the front end and the rear end of the fire door 100, the circular sanding disc 52 is in contact with the fire door 100 under the action of the jacking hydraulic cylinder 55, so that the circular sanding disc 52 can perform secondary fine grinding on the fire door 100.

The third step: when the lateral wall carries out dull polish when needs are handled to fire door 100 left and right sides, make centre gripping frame 1 drive circular mill frame 2 and rotate 90 through steering cylinder 63 to the annular dull polish dish 43 carries out dull polish to fire door 100 left and right sides lateral wall and handles, makes circular dull polish dish 52 can carry out the secondary fine grinding to fire door 100 left and right sides lateral wall through jacking pneumatic cylinder 55 simultaneously.

The fourth step: similarly, when the upper and lower end faces of the fire door 100 need to be frosted, the support link 62 is driven to move by the limiting hydraulic cylinder 612, and the support link 62 is rotated by 90 ° under the matching of the limiting column 621 and the spiral groove 611, so that the annular sanding disc 43 and the circular sanding disc 52 can perform rough grinding treatment and fine grinding treatment on the upper and lower end faces of the fire door 100 respectively.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic edging device of fire door is prevented to steel heat insulation, includes centre gripping frame (1), circular mill frame (2) and edging and rotates frame (3), its characterized in that: the circular grinding frame (2) is two in number and distributed oppositely, the edge grinding rotating frame (3) is rotatably mounted in the middle of the circular grinding frame (2), the clamping frame (1) is fixedly mounted at the back of the circular grinding frame (2), the clamping frame (1), the circular grinding frame (2) and the edge grinding rotating frame (3) are of a cylinder structure with one open end, the edge grinding rotating frame (3) is located in the clamping frame (1), an annular outer gear ring (31) is arranged on the outer side wall of the edge grinding rotating frame (3), the annular outer gear ring (31) is externally meshed with a driving gear (32), the driving gear (32) is mounted at the output end of a rotating motor (33), and the rotating motor (33) is mounted on the inner wall of the clamping frame (1); wherein:

a rotating disc (41) is rotatably arranged in the circular grinding frame (2), the rotating disc (41) is connected with the edging rotating frame (3), an annular mounting seat (42) is mounted at one end, away from the clamping frame (1), of the rotating disc (41), an annular grinding disc (43) is detachably mounted on the annular mounting seat (42), and a supporting and connecting mechanism is connected with one end, opposite to the clamping frame (1);

The supporting and connecting mechanism comprises a clamping cylinder (61), a supporting connecting rod (62), a steering hydraulic cylinder (63), a triangular connecting plate (64) and rotating assemblies (65), wherein the rotating assemblies (65) are arranged on the two opposite sides of the clamping frame (1), the rotating assembly (65) positioned at the front end of the fire door is arranged on the right side of the clamping frame (1), the left side of the rotating assembly (65) is connected with the triangular connecting plate (64), the rotating assembly (65) positioned at the rear end of the fire door is arranged on the left side of the clamping frame (1), the right side of the rotating assembly (65) is connected with the triangular connecting plate (64), one end, away from the rotating assembly (65), of the triangular connecting plate (64) is connected with one end of the supporting connecting rod (62), the other end of the supporting connecting rod (62) is arranged in the clamping cylinder (61) in a sliding manner, the clamping cylinder (61) is connected with the existing moving mechanism, a steering hydraulic cylinder (63) is arranged between the support connecting rod (62) and the clamping frame (1), and two ends of the steering hydraulic cylinder (63) are respectively hinged with one end of the clamping frame (1), which is opposite to the other end, and the outer wall of the support connecting rod (62);

the rotating component (65) comprises a rotating seat (651), a rotating rod (652), a rotating block (653), a positioning column (654), a positioning matching seat (655) and an elastic arc sheet (656), one end of the clamping frame (1) far away from the circular grinding frame (2) is provided with a vertically placed rotating seat (651), and a positioning matching seat (655) is arranged in the rotating seat (651) in a sliding way, an elastic arc sheet (656) is arranged between the positioning matching seat (655) and the rotating seat (651), one end of the positioning matching seat (655) far away from the clamping frame (1) is provided with a positioning column (654), one end of the triangular connecting plate (64) far away from the supporting connecting rod (62) is provided with a rotating block (653), and the rotating block (653) is rotatably arranged on the rotating seat (651) through a rotating rod (652), and the rotating block (653) is matched with the positioning column (654).

2. The automatic edging device of a steel heat-insulation fireproof door according to claim 1, characterized in that: rotate disc (41) and keep away from edging and rotate frame (3) one side and be provided with circular mount pad (51), and circular mount pad (51) are located annular mount pad (42), circular mount pad (51) are kept away from one side of rotating disc (41) and are installed circular dull polish dish (52) through the detachable mode, circular mount pad (51) are towards one side mid-coupling of rotating disc (41) have guide block (53) of square structure, and guide block (53) run through and rotate disc (41), the one end that guide block (53) are located edging and rotate frame (3) is provided with accessory plate (54), and accessory plate (54) are connected with jacking pneumatic cylinder (55) output, jacking pneumatic cylinder (55) stiff end is installed in rotating frame (3).

3. The automatic edging device of a steel heat-insulating fireproof door according to claim 1, characterized in that: the one end that the rotation block (653) kept away from triangle even board (64) and the one end that rotation block (653) moves towards clamping frame (1) all be provided with semi-circular cambered surface structure, rotation block (653) cooperate through reference column (654) on semi-circular cambered surface and location cooperation seat (655), and the terminal surface that is provided with semi-circular cambered surface structure on rotation block (653) cooperatees with the terminal surface that clamping frame (1) was kept away from to location cooperation seat (655).

4. The automatic edging device of a steel heat-insulating fireproof door according to claim 1, characterized in that: one end of the supporting connecting rod (62) far away from the triangular connecting plate (64) is provided with a limiting column (621), the outer side wall of the clamping cylinder (61) is provided with a spiral groove (611) with a quarter pitch, the limiting column (621) is arranged in the spiral groove (611) in a sliding mode, a limiting hydraulic cylinder (612) is installed in the clamping cylinder (61), and the output end of the limiting hydraulic cylinder (612) is rotatably connected with one end of the supporting connecting rod (62) far away from the triangular connecting plate (64).

5. The automatic edging device of a steel heat-insulating fireproof door according to claim 1, characterized in that: one side of the circular grinding frame (2) far away from the clamping frame (1) is provided with an annular pressing strip (21), a spring rod (22) is connected between the annular pressing strip (21) and the circular grinding frame (2), and a plurality of rolling steel balls (23) are uniformly arranged at the circumferential direction of one end of the annular pressing strip (21) far away from the spring rod (22).

6. The automatic edging device of a steel heat-insulating fireproof door according to claim 1, characterized in that: circular mill frame (2) in be provided with and separate disconnected ring (24), and separate ring (24) and rotating disc (41) normal running fit, be provided with annular electromagnet (25) on circular mill frame (2) interior diapire, and annular electromagnet (25) are located and separate the outside of disconnected ring (24).

7. The automatic edging device of a steel heat-insulation fireproof door according to claim 2, characterized in that: the sum of the thickness of the circular mounting seat (51) and the thickness of the circular sanding disc (52) is smaller than the sum of the thickness of the annular mounting seat (42) and the thickness of the annular sanding disc (43).