Automatic cover hemming structure

Abstract

The application provides a roof automatic edge covering structure, which is suitable for the technical field of automobile body edge covering and aims to provide the roof automatic edge covering structure.The oil cylinder device is arranged on the top of the extrusion seat, the upper surface of the extrusion seat is attached with the extrusion plate, the upper part of the oil cylinder device, the extrusion seat and the extrusion plate is provided with the plate main body, the surface of the oil cylinder device is fixedly installed with the extrusion mechanism, the plate main body is processed by the extrusion mechanism, the surface of the extrusion mechanism is fixedly installed with the loading mechanism, the inside of the extrusion plate is symmetrically installed with the assembling mechanism, the extrusion mechanism, the loading mechanism and the assembling mechanism are installed, the pre-pressing bending action is increased, the edge covering precision is improved, the efficiency is improved, the cost is reduced, the plate main body can be quickly installed or replaced, the extrusion seat and the extrusion plate can be quickly assembled, and the application is also suitable for the field of automobile body edge covering.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile body hemming, in particular to a roof automatic hemming structure. BACKGROUND

[0002] When the automobile body hemming is processed, the roof hemming device needs to be used, the roof hemming device is an important part of the automobile body hemming process, mainly responsible for the hemming work of the automobile roof panel in the welding line, the processing panel is put into the roof hemming device by artificial, and the roof hemming device is started to process the hemming, in the hemming process of the processing panel, the hemming precision cannot meet the process requirements, the production efficiency of the panel is reduced, and the input cost is increased, aiming at the above shortcomings, a roof automatic hemming pre-bending structure is developed, which can increase the pre-bending action, improve the hemming precision, improve the efficiency and reduce the cost.

[0003] Therefore, it is necessary to provide a new roof automatic hemming structure to solve the above technical problems. SUMMARY

[0004] To solve the above technical problems, the present application provides a roof automatic hemming structure.

[0005] The roof automatic hemming structure provided by the present application comprises: an oil cylinder device, an extrusion seat is arranged at the top of the oil cylinder device, an extrusion plate is attached to the upper surface of the extrusion seat, a panel body is arranged above the oil cylinder device, the extrusion seat and the extrusion plate, an extrusion mechanism is fixedly installed on the surface of the oil cylinder device, the panel body is processed by the extrusion mechanism, a charging mechanism is fixedly installed on the surface of the extrusion mechanism, the panel body is slidably connected with the charging mechanism, an assembly mechanism is symmetrically installed in the interior of the extrusion plate, the extrusion seat and the extrusion plate are quickly connected, the panel body is quickly clamped and replaced by the charging mechanism, the oil cylinder device drives the extrusion mechanism to start, and the panel body is processed by hemming, the pre-bending mechanism is increased, the pre-bending is performed in advance before formal hemming, the precision of the hemming is improved, and the device only needs to be started by the oil cylinder device, thereby saving the cost.

[0006] Preferably, the extrusion mechanism comprises an extrusion mounting frame, a linkage mechanism, a pressing mechanism, a guide rail and a guide piece, one side of the oil cylinder device is fixedly connected with the extrusion mounting frame, the back surface of the extrusion seat is fixedly installed with the linkage mechanism, the upper portion of the linkage mechanism is provided with the pressing mechanism, and the linkage mechanism and the pressing mechanism rotate on the inner wall of the extrusion mounting frame, the surface of the extrusion mounting frame is fixedly connected with the guide rail in pairs, the back surface of the extrusion seat is fixedly connected with the guide piece in pairs, and the guide piece slides on the surface of the guide rail, the moving end of the oil cylinder device drives the extrusion seat and the extrusion plate to move upwards, the extrusion seat drives the linkage mechanism to move upwards along the inner wall of the extrusion mounting frame, the triangular block of the linkage mechanism extrudes the circular block portion of the pressing mechanism, the pressing mechanism rotates on the inner wall of the extrusion mounting frame, the protruding portion of the pressing mechanism compresses the main body of the plate piece, the main body of the plate piece is extruded for the first time, the oil cylinder device continues to move upwards, the triangular block portion of the linkage mechanism no longer contacts the circular block portion of the pressing mechanism, the pressing mechanism is automatically reset, the oil cylinder device drives the extrusion seat and the extrusion plate to continue to compress the main body of the plate piece, and the main body of the plate piece is extruded for the second time.

[0007] Preferably, the loading mechanism comprises a loading mounting seat, a rectangular groove, an assembling block and an insertion block, the surface of the extrusion mounting frame is fixedly connected with the loading mounting seat, the inside of the loading mounting seat is symmetrically provided with the rectangular groove, the two sides of the loading mounting seat are provided with the assembling block, and the side surface of the rectangular groove is fixedly connected with the insertion block in pairs, the main body of the plate piece is placed into the inside of the rectangular groove, then the assembling block is close to the side surface of the loading mounting seat, the insertion block is inserted into the inside of the assembling block, the assembling block and the loading mounting seat are connected firmly, the main body of the plate piece is limited, the edge covering processing is facilitated, the assembling block and the loading mounting seat are separated, the main body of the plate piece can be replaced, and the edge covering processing is facilitated and fast.

[0008] Preferably, the loading mechanism further comprises a sliding groove, a pressing block and a driving screw rod, the inside of the assembling block is provided with the sliding groove, the inside wall of the sliding groove is slidably connected with the pressing block, and the inside wall of the sliding groove is rotatably connected with the driving screw rod, and the surface of the driving screw rod is in meshing connection with the inside wall of the pressing block, the assembling block is close to the side surface of the loading mounting seat, the insertion block is inserted into the inside of the sliding groove, the driving screw rod on the inside wall of the sliding groove is rotated, the surface of the driving screw rod contacts the inside wall of the pressing block, the pressing block slides along the inside wall of the sliding groove, the pressing block is inserted into the inside of the insertion block, the loading mounting seat and the assembling block are connected firmly, the driving screw rod is rotated, the pressing block is moved out of the inside of the insertion block, and the loading mounting seat and the assembling block are separated.

[0009] Preferably, the upper surface of the extrusion seat is symmetrically provided with positioning grooves, the lower surface of the extrusion plate is symmetrically fixedly connected with positioning blocks, the positioning blocks and the positioning grooves are slidably connected, the extrusion plate and the extrusion seat are close to each other, the lower surface of the extrusion plate contacts the upper surface of the extrusion seat, the positioning blocks enter the positioning grooves, the extrusion seat and the extrusion plate are firmly connected through the assembly mechanism, the positioning grooves and the positioning blocks facilitate quick positioning, and the connection speed of the extrusion seat and the extrusion plate is improved.

[0010] Preferably, the assembly mechanism comprises an assembly seat, an assembly groove, a first limiting groove and a second limiting groove, the upper surface of the extrusion seat is symmetrically fixedly connected with the assembly seat, the inside of the extrusion plate is symmetrically provided with the assembly groove, and the assembly seat and the assembly groove are slidably connected, the side surface of the assembly seat is symmetrically provided with three first limiting grooves, the inner wall of the assembly groove is symmetrically provided with second limiting grooves, and the assembly mechanism further comprises limiting blocks, first springs and protective covers, the inner wall of the second limiting groove is slidably connected with three limiting blocks at equal intervals, the inner wall of the second limiting groove is fixedly connected with first springs at equal intervals, one side of the first spring is fixedly connected with the surface of the limiting block, and the inside of the assembly groove is provided with the protective cover, and the protective cover is located above the assembly seat.

[0011] Preferably, the assembly mechanism further comprises an assembly groove, an assembly seat and a rotating plate, the surface of the protective cover is symmetrically provided with the assembly groove, the inside of the assembly groove is slidably connected with the assembly seat, and the lower surface of the protective cover is symmetrically rotatably connected with the rotating plate, the rotating plate and the protective cover are in a vertical state, the rotating plate enters the second limiting groove, the limiting blocks are prevented from moving out of the second limiting groove, the protective cover is moved upward, the rotating plate and the protective cover are in a horizontal state, the protective cover is close to the assembly groove, the assembly seat enters the assembly groove, the assembly groove and the protective cover are firmly connected, and the assembly groove is protected.

[0012] Preferably, the upper surface of the protective cover is fixedly connected with a T-shaped rod, for grabbing, the assembly seat and the assembly groove are separated, the T-shaped rod is manually grabbed, the protective cover is conveniently lifted, the protective cover is replaced, the grabbing of the protective cover is ensured, and the convenience of the protective cover is improved.

[0013] Preferably, the extrusion seat and the extrusion plate are made of steel alloy material to prolong the service life, the steel alloy material has high physical strength and stable chemical properties, the extrusion plate will not be easily damaged when extruding the plate body, and the surface will not be easily dented when the extrusion seat and the extrusion plate are extruded and collided, and the extrusion seat and the extrusion plate will not be easily damaged after long-term use, prolonging the service life of the extrusion seat and the extrusion plate.

[0014] Preferably, the assembly seat is symmetrically and slidingly connected with a clamping block inside, the second spring is fixedly connected with the inner wall of the assembly seat, and one side of the second spring is fixedly connected with the surface of the clamping block, for fixed connection. The assembly seat passes through the assembly groove, the clamping block is extruded by the inner wall of the assembly groove, first enters the inside of the assembly seat, the clamping block extrudes the second spring to shrink, and after the assembly seat passes through the assembly groove, the second spring resets and opens, moves the clamping block out of the inside of the assembly seat, and connects the protective cover and the assembly groove.

[0015] Compared with the related art, the automatic top cover edge covering structure has the following beneficial effects:

[0016] The application provides an automatic top cover edge covering structure:

[0017] By installing the extrusion mechanism, the charging mechanism and the assembly mechanism, the pre-pressing bending action is increased, the edge covering precision is improved, the efficiency is improved, the cost is reduced, and the plate body can be quickly installed or replaced.

[0018] The upper surface of the protective cover is fixedly connected with a T-shaped rod for grabbing, so as to separate the assembly seat and the assembly groove. The T-shaped rod is manually grabbed, the protective cover is conveniently lifted, the protective cover is replaced, the grabbing of the protective cover is firm, and the convenience of the protective cover is improved.

[0019] By using steel alloy material to make the extrusion seat and the extrusion plate, the service life is prolonged, the steel alloy material has high physical strength and stable chemical properties, the extrusion plate will not be easily damaged when extruding the plate body, and the surface will not be easily dented when the extrusion seat and the extrusion plate are extruded and collided, and the extrusion seat and the extrusion plate will not be easily damaged after long-term use, prolonging the service life of the extrusion seat and the extrusion plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The overall structure schematic diagram of the application is provided;

[0021] Figure 2 The extrusion mechanism structure schematic diagram of the application is provided;

[0022] Figure 3 The charging mechanism structure schematic diagram of the application is provided.

[0023] Figure 4 Structure diagram of the loading mechanism provided by the present application;

[0024] Figure 5 Enlarged diagram of the extrusion seat and the extrusion plate provided by the present application;

[0025] Figure 6 Structure diagram of the assembling mechanism provided by the present application;

[0026] Figure 7 Structure diagram of the assembling seat provided by the present application.

[0027] Reference signs in the figure: 1, oil cylinder device; 2, extrusion seat; 3, extrusion plate; 4, plate main body; 5, extrusion mechanism; 51, extrusion mounting frame; 52, linkage mechanism; 53, pressing mechanism; 54, guide rail; 55, guide piece; 6, loading mechanism; 61, loading mounting seat; 62, rectangular groove; 63, assembling block; 64, insertion block; 65, sliding groove; 66, pressing block; 67, driving screw; 7, assembling mechanism; 71, assembling seat; 72, assembling groove; 73, first limiting groove; 74, second limiting groove; 75, limiting block; 76, first spring; 77, protective cover; 78, assembling groove; 79, assembling seat; 710, rotating plate; 8, positioning groove; 9, positioning block; 10, T-shaped rod; 11, clamping block; 12, second spring. DETAILED DESCRIPTION

[0028] The present application will be further described below in combination with the accompanying drawings and embodiments.

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The automatic top cover edge covering structure comprises an oil cylinder device 1, an extrusion seat 2, an extrusion plate 3, a plate body 4, an extrusion mechanism 5, and a loading mechanism 6. Embodiment one

[0030] In the specific implementation process, as shown in Figure 1 and Figure 2 , the extrusion mechanism 5 comprises an extrusion mounting frame 51, a linkage mechanism 52, a pressing mechanism 53, a guide rail 54, and a guide piece 55, one side of the oil cylinder device 1 is fixedly connected with the extrusion mounting frame 51, the back surface of the extrusion seat 2 is fixedly installed with the linkage mechanism 52, the upper portion of the linkage mechanism 52 is provided with the pressing mechanism 53, and the linkage mechanism 52 and the pressing mechanism 53 rotate on the inner wall of the extrusion mounting frame 51, the surface of the extrusion mounting frame 51 is fixedly connected with the guide rail 54 in a symmetrical manner, the back surface of the extrusion seat 2 is fixedly connected with the guide piece 55 in a symmetrical manner, and the guide piece 55 slides on the surface of the guide rail 54, the moving end of the oil cylinder device 1 drives the extrusion seat 2 and the extrusion plate 3 to move upwards, the extrusion seat 2 drives the linkage mechanism 52 to move upwards along the inner wall of the extrusion mounting frame 51, the triangular block of the linkage mechanism 52 extrudes the circular block portion of the pressing mechanism 53, the pressing mechanism 53 rotates on the inner wall of the extrusion mounting frame 51, the protruding portion of the pressing mechanism 53 compresses the plate body 4, and the plate body 4 is extruded for the first time, the oil cylinder device 1 continues to move upwards, the triangular block portion of the linkage mechanism 52 no longer contacts the circular block portion of the pressing mechanism 53, the pressing mechanism 53 is automatically reset, the oil cylinder device 1 drives the extrusion seat 2 and the extrusion plate 3 to continue to compress the plate body 4, and the plate body 4 is extruded for the second time, so that the plate body 4 is edge covered.

[0031] Reference Figure 2 and Figure 3As shown, the charging mechanism 6 includes a charging mount 61, a rectangular groove 62, an assembly block 63 and an insertion block 64, the extrusion mount 51 is fixedly connected with the charging mount 61, the charging mount 61 is symmetrically provided with the rectangular groove 62 inside, the charging mount 61 is provided with the assembly block 63 on both sides, and the rectangular groove 62 is symmetrically fixedly connected with the insertion block 64 on the side. Put the plate body 4 into the rectangular groove 62, then put the assembly block 63 close to the side of the charging mount 61, and put the insertion block 64 into the assembly block 63, so as to connect the assembly block 63 and the charging mount 61 firmly, limit the plate body 4, facilitate the edge covering processing, separate the assembly block 63 and the charging mount 61, and replace the plate body 4 for edge covering processing.

[0032] Reference Figure 3 And Figure 4 As shown, the charging mechanism 6 further includes a sliding groove 65, a pressing block 66 and a driving screw 67, the sliding groove 65 is formed in the assembly block 63, the pressing block 66 is slidably connected with the inner wall of the sliding groove 65, and the driving screw 67 is rotatably connected with the inner wall of the sliding groove 65 and is in meshing connection with the inner wall of the pressing block 66. The assembly block 63 is close to the side of the charging mount 61, the insertion block 64 is put into the sliding groove 65, the driving screw 67 on the inner wall of the sliding groove 65 is rotated, the surface of the driving screw 67 contacts the inner wall of the pressing block 66, the pressing block 66 is slid along the inner wall of the sliding groove 65, the pressing block 66 is put into the insertion block 64, the charging mount 61 and the assembly block 63 are connected firmly, the driving screw 67 is rotated, the pressing block 66 is moved out of the insertion block 64, and the charging mount 61 and the assembly block 63 are separated.

[0033] Reference Figure 5 As shown, the upper surface of the extrusion seat 2 is symmetrically provided with a positioning groove 8, and the lower surface of the extrusion plate 3 is fixedly connected with a positioning block 9 in a symmetrical manner, and the positioning block 9 is slidably connected with the positioning groove 8. The extrusion plate 3 and the extrusion seat 2 are close to each other, the lower surface of the extrusion plate 3 contacts the upper surface of the extrusion seat 2, the positioning block 9 is put into the positioning groove 8, and the assembly mechanism 7 is matched to connect the extrusion seat 2 and the extrusion plate 3 firmly. The positioning groove 8 and the positioning block 9 facilitate quick positioning, and the connection speed of the extrusion seat 2 and the extrusion plate 3 is improved.

[0034] Reference Figure 5 And Figure 6As shown, the assembly mechanism 7 further comprises an assembly groove 78, an assembly seat 79 and a rotating plate 710. The surface of the protective cover 77 is symmetrically provided with the assembly groove 78. The assembly groove 78 is slidably connected with the assembly seat 79. The lower surface of the protective cover 77 is symmetrically connected with the rotating plate 710. The rotating plate 710 and the protective cover 77 are in a vertical state. The rotating plate 710 enters the second limiting groove 74 to prevent the limiting block 75 from moving out of the second limiting groove 74. The protective cover 77 is moved upward. The rotating plate 710 and the protective cover 77 are in a horizontal state. The protective cover 77 is close to the assembly groove 72. The assembly seat 79 enters the assembly groove 78 to firmly connect the assembly groove 72 and the protective cover 77 and protect the assembly groove 72.

[0035] Referring to Figure 6 As shown, the assembly mechanism 7 further comprises an assembly groove 78, an assembly seat 79 and a rotating plate 710. The surface of the protective cover 77 is symmetrically provided with the assembly groove 78. The assembly groove 78 is slidably connected with the assembly seat 79. The lower surface of the protective cover 77 is symmetrically connected with the rotating plate 710. The rotating plate 710 and the protective cover 77 are in a vertical state. The rotating plate 710 enters the second limiting groove 74 to prevent the limiting block 75 from moving out of the second limiting groove 74. The protective cover 77 is moved upward. The rotating plate 710 and the protective cover 77 are in a horizontal state. The protective cover 77 is close to the assembly groove 72. The assembly seat 79 enters the assembly groove 78 to firmly connect the assembly groove 72 and the protective cover 77 and protect the assembly groove 72.

[0036] Referring to Figure 6 As shown, the upper surface of the protective cover 77 is fixedly connected with the T-shaped rod 10 for grabbing. The assembly seat 79 and the assembly groove 78 are separated. The T-shaped rod 10 is manually grabbed to facilitate lifting the protective cover 77. The protective cover 77 is replaced to ensure firm grabbing of the protective cover 77 and improve the convenience of the protective cover 77.

[0037] Referring to Figure 1 And Figure 2As shown, the extrusion seat 2 and the extrusion plate 3 are made of steel alloy material, for prolonging the service life, the steel alloy material has high physical strength and stable chemical properties, when the extrusion plate 3 extrudes the plate body 4, the extrusion plate 3 will not be easily damaged, at the same time, when the extrusion seat 2 and the extrusion plate 3 are extruded and collided, the surface will not be easily dented, after a long time of use, the extrusion seat 2 and the extrusion plate 3 will not be easily damaged, prolonging the service life of the extrusion seat 2 and the extrusion plate 3. Example two

[0038] Reference Figure 2 And Figure 3 As shown, the assembly seat 79 is symmetrically and slidingly connected with the clamping block 11 inside, the second spring 12 is fixedly connected with the inner wall of the assembly seat 79 symmetrically, and one side of the second spring 12 is fixedly connected with the surface of the clamping block 11, for fixed connection, the assembly seat 79 passes through the assembly groove 78, the clamping block 11 is extruded by the inner wall of the assembly groove 78, first enters the inside of the assembly seat 79, the clamping block 11 extrudes and shrinks the second spring 12, after the assembly seat 79 passes through the assembly groove 78, the second spring 12 resets and opens, moves the clamping block 11 out of the inside of the assembly seat 79, and connects the protective cover 77 and the assembly groove 72.

[0039] Working principle: the automatic top cover edge covering structure of the application is used, the extrusion seat 2 and the extrusion plate 3 are quickly connected through the assembling mechanism 7, when the extrusion seat 2 and the extrusion plate 3 are close to each other, the assembling seat 71 enters the inside of the assembling groove 72, the limiting block 75 is extruded and enters the inside of the second limiting groove 74, the limiting block 75 extrudes the first spring 76 to shrink, after the assembling seat 71 completely enters the inside of the assembling groove 72, the first spring 76 resets and opens, the limiting block 75 is moved out of the inside of the second limiting groove 74, the limiting block 75 enters the inside of the first limiting groove 73, the extrusion seat 2 and the extrusion plate 3 are connected firmly, the limiting block 75 is moved from the inside of the first limiting groove 73, the assembling seat 71 and the assembling groove 72 are separated, the protective cover 77 protects the assembling groove 72, prevents particles from entering the inside of the assembling groove 72, the rotating plate 710 and the protective cover 77 are in a vertical state, the rotating plate 710 enters the inside of the second limiting groove 74, prevents the limiting block 75 from moving out of the inside of the second limiting groove 74, the protective cover 77 is moved upwards, the rotating plate 710 and the protective cover 77 are in a horizontal state, the protective cover 77 is close to the assembling groove 72, the assembling seat 79 enters the inside of the assembling groove 78, the assembling groove 72 and the protective cover 77 are connected firmly, the assembling groove 72 is protected, the plate body 4 is quickly clamped and replaced through the charging mechanism 6, the plate body 4 is placed into the rectangular groove 62, then the assembling block 63 is close to the side of the charging installation seat 61, the insertion block 64 enters the inside of the assembling block 63, the assembling block 63 and the charging installation seat 61 are connected firmly, the plate body 4 is limited, the edge covering processing is facilitated, the assembling block 63 and the charging installation seat 61 are separated, the plate body 4 can be replaced, the plate body 4 is quickly replaced for edge covering processing, the assembling block 63 is close to the side of the charging installation seat 61, the insertion block 64 enters the inside of the sliding groove 65, the driving screw 67 of the inner wall of the sliding groove 65 is rotated, the surface of the driving screw 67 contacts the inner wall of the lower pressing block 66, the lower pressing block 66 slides along the inner wall of the sliding groove 65, the lower pressing block 66 enters the inside of the insertion block 64, the charging installation seat 61 and the assembling block 63 are connected firmly, the driving screw 67 is rotated, the lower pressing block 66 is moved out of the inside of the insertion block 64, the charging installation seat 61 and the assembling block 63 are separated, the extrusion mechanism 5 is started under the drive of the oil cylinder device 1, the plate body 4 is edge covering processed, the extrusion seat 2 and the extrusion plate 3 are moved upwards under the drive of the moving end of the oil cylinder device 1, the extrusion seat 2 drives the linkage mechanism 52 to move upwards along the inner wall of the extrusion installation frame 51, the triangular block of the linkage mechanism 52 extrudes the circular block part of the pressing mechanism 53, the pressing mechanism 53 rotates on the inner wall of the extrusion installation frame 51, the protruding part of the pressing mechanism 53 compresses the plate body 4, the plate body 4 is extruded for the first time, the oil cylinder device 1 continues to move upwards, the triangular block part of the linkage mechanism 52 no longer contacts the circular block part of the pressing mechanism 53, the pressing mechanism 53 resets automatically, the oil cylinder device 1 drives the extrusion seat 2 and the extrusion plate 3 to continue to compress the plate body 4, the plate body 4 is extruded for the second time, the plate body 4 is edge covering processed, the pre-pressing and bending mechanism is added, before formal edge covering, pre-pressing and bending are carried out,The precision of the edge covering is improved, the device only needs to be started by the oil cylinder device 1, and cost is saved.

[0040] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A structure for automatic cover hemming, characterized by, Include: Oil cylinder device (1); extrusion seat (2), the top of the oil cylinder device (1) is provided with extrusion seat (2); Extrusion plate (3), the upper surface of the extrusion seat (2) is attached with extrusion plate (3); plate body (4), the oil cylinder device (1), extrusion seat (2) and extrusion plate (3) are provided with plate body (4) above; Extrusion mechanism (5), the surface of the oil cylinder device (1) is fixedly installed with extrusion mechanism (5), the plate body (4) is edge processing through the extrusion mechanism (5), the extrusion mechanism (5) includes extrusion mounting bracket (51), linkage mechanism (52), pressing mechanism (53), guide rail (54) and guide piece (55), one side of the oil cylinder device (1) is fixedly connected with the extrusion mounting bracket (51), the back surface of the extrusion seat (2) is fixedly installed with the linkage mechanism (52), the linkage mechanism (52) is provided with the pressing mechanism (53) above, and the linkage mechanism (52) and the pressing mechanism (53) rotate in the inner wall of the extrusion mounting bracket (51), the surface of the extrusion mounting bracket (51) is fixedly connected with the guide rail (54) symmetrically, the back surface of the extrusion seat (2) is fixedly connected with the guide piece (55) symmetrically, and the guide piece (55) slides on the surface of the guide rail (54).

2. The self-cover topstitching structure according to claim 1, wherein, The surface of the extrusion mechanism (5) is fixedly installed with the loading mechanism (6), the plate body (4) is replaced and limited through the loading mechanism (6), the inside of the extrusion plate (3) is symmetrically installed with the assembly mechanism (7), the extrusion seat (2) and the extrusion plate (3) are assembled and separated through the assembly mechanism (7), the assembly mechanism (7) includes assembly seat (71), assembly groove (72), first limiting groove (73) and second limiting groove (74), the upper surface of the extrusion seat (2) is fixedly connected with the assembly seat (71) symmetrically, the inside of the extrusion plate (3) is symmetrically provided with the assembly groove (72), and the assembly seat (71) and the assembly groove (72) are slidably connected, the side surface of the assembly seat (71) is symmetrically provided with three first limiting grooves (73), and the inner wall of the assembly groove (72) is symmetrically provided with the second limiting groove (74).

3. The self-capping structure of claim 2, wherein, The loading mechanism (6) includes loading mounting seat (61), rectangular groove (62), assembly block (63) and insertion block (64), the surface of the extrusion mounting bracket (51) is fixedly connected with the loading mounting seat (61), the inside of the loading mounting seat (61) is symmetrically provided with the rectangular groove (62), the both sides of the loading mounting seat (61) are provided with the assembly block (63), and the side surface of the rectangular groove (62) is fixedly connected with the insertion block (64) symmetrically.

4. The self-cover topstitching structure according to claim 3, wherein, The loading mechanism (6) further includes sliding groove (65), pressing block (66) and driving screw (67), the inside of the assembly block (63) is provided with the sliding groove (65), the sliding groove (65) is slidably connected with the pressing block (66), and the sliding groove (65) is rotatably connected with the driving screw (67), and the surface of the driving screw (67) is engagedly connected with the inner wall of the pressing block (66).

5. The self-capping structure of claim 1, wherein, The upper surface of the extrusion seat (2) is symmetrically provided with positioning grooves (8), the lower surface of the extrusion plate (3) is symmetrically fixedly connected with positioning blocks (9), and the positioning blocks (9) and the positioning grooves (8) are slidably connected.

6. The self-cover topstitching structure according to claim 2, wherein, The assembling mechanism (7) further comprises limiting blocks (75), first springs (76) and protective covers (77), three limiting blocks (75) are slidably connected to the inner wall of the second limiting groove (74) at equal intervals, the first springs (76) are fixedly connected to the inner wall of the second limiting groove (74) at equal intervals, one side of the first spring (76) is fixedly connected to the surface of the limiting block (75), and the protective cover (77) is installed inside the assembling groove (72) and located above the assembling seat (71).

7. The self-capping structure of claim 6, wherein, The assembling mechanism (7) further comprises assembling grooves (78), assembling seats (79) and rotating plates (710), the surface of the protective cover (77) is symmetrically provided with the assembling grooves (78), the assembling seats (79) are slidably connected to the inside of the assembling grooves (78), and the lower surface of the protective cover (77) is symmetrically connected with the rotating plates (710).

8. The self-cover topstitching structure according to claim 6, wherein, The upper surface of the protective cover (77) is fixedly connected with a T-shaped rod (10).

9. The self-capping roof structure of claim 1, wherein, The extrusion seat (2) and the extrusion plate (3) are made of steel alloy material.

10. The self-capping structure of claim 7, wherein, The inside of the assembling seat (79) is symmetrically slidably connected with clamping blocks (11), the inner wall of the assembling seat (79) is symmetrically fixedly connected with second springs (12), and one side of the second spring (12) is fixedly connected to the surface of the clamping block (11) for fixed connection.

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