CN114850356A - Civil air defense network bending device and method for bending civil air defense network by using same - Google Patents

Abstract

The invention belongs to the technical field of a bending device and a bending method, and discloses a bending device for an air defense net and a method for bending an air defense net using the device. Its main technical features are: comprising a frame body with a net feeding mechanism, a longitudinal rib bending mechanism is arranged on the frame body, a transverse rib bending frame is arranged in front of the longitudinal rib bending mechanism, and a transverse rib bending frame is arranged in front of the longitudinal rib bending mechanism. The two ends of the bending frame are oppositely provided with transverse rib bending mechanisms. First, the longitudinal rib in front of the mesh is bent by the longitudinal rib bending mechanism, and then the mesh is fed through the mesh feeding mechanism. While feeding the mesh, the transverse ribs on both sides are folded through the transverse rib. The bending mechanism is bent, and finally the longitudinal ribs behind the mesh are bent through the longitudinal rib bending mechanism. The bending quality is good, the bending efficiency is high, the labor intensity is low, and the mesh flatness is good.

Description

Bending device for civil air defense net and method for bending civil air defense net using the same

technical field

The invention belongs to the technical field of a bending device and a bending method for an air defense net, and in particular relates to a bending device for an air defense net and a method for bending the air defense net using the device.

Background technique

The air defense net is made of welded steel bars with a larger diameter. In order to increase the strength of the end, the four sides of the air defense mesh are bent to one side. At present, the human air defense net is welded by a welding machine. After the welding is completed, the mesh is fixed on the operating table, and the end of the steel bar is manually bent. The above method has the following defects: First, due to the relatively large diameter, the manual bending is labor-intensive and labor-intensive. Second, when bending, due to different bending parts, the side of the air defense net is not neat, which affects the use of the air defense net; The steel bars are bent, resulting in poor flatness of the mesh.

SUMMARY OF THE INVENTION

The first technical problem to be solved by the present invention is to provide a human air defense net bending device with high labor efficiency, low labor intensity, accurate bending position, precise bending angle and good flatness of the mesh.

In order to solve the above-mentioned problems, the technical solution adopted by the inventor of the present invention is to include a frame body with a net feeding mechanism, a longitudinal rib bending mechanism is arranged on the frame body, and a longitudinal rib bending mechanism is provided on the frame body. A transverse rib bending frame is arranged in the front, and a transverse rib bending mechanism is oppositely arranged at both ends of the transverse rib bending frame; The lower part of the bending includes a front support plate and a rear support plate fixed with the frame body, a lower mold groove is formed between the front support plate and the rear support plate, and a lower mold bracket is arranged in the lower mold groove. , a longitudinal rib lower mold is fixed above the lower mold bracket, and is connected to the frame body under the lower mold bracket through a lower mold lifting mechanism; the upper part of the longitudinal rib bending includes being fixed to the frame body The front pressure plate and the rear pressure plate are formed, an upper fixed plate groove is formed between the front pressure plate and the rear pressure plate, an upper fixed plate is arranged in the upper fixed plate groove, and the upper part of the upper fixed plate is fixed with the upper beam, the The upper beam is fixed with the lifting mechanism of the upper beam, and the front pressing plate and the rear pressing plate are respectively provided with a front bending upper mold and a rear bending upper mold, and the front bending upper mold and the rear bending upper mold are respectively connected with the front bending upper mold. The bending cylinder is connected with the rear bending cylinder; the transverse rib bending mechanism comprises a transverse rib bending frame, a transverse rib lower die is arranged under the transverse rib bending frame, and a transverse rib bending frame is arranged on the transverse rib bending frame above the transverse rib lower mold Pressing block, the pressing block is fixed with the top rod of the pressing block cylinder fixed on the transverse rib bending frame, and a transverse rib upper mold is provided obliquely above the transverse rib lower mold, and the transverse rib upper mold is fixed on the transverse rib. The top rod connection of the upper mold cylinder on the bending frame.

Its additional technical features are:

The front pressing plate and the rear pressing plate are respectively provided with a front fixing shaft and a rear fixing shaft, and the front bending upper die and the rear bending upper die move with the front pressing plate and the rear pressing plate respectively through the front fixing shaft and the rear fixing shaft. connect;

The upper die for the transverse bar includes an upper die frame for the transverse bar and a pressing wheel fixed on the upper die frame for the transverse bar.

The second technical problem to be solved by the present invention is to provide a method for bending an air defense net by using the device.

In order to solve the above-mentioned problems, the technical scheme adopted in the method for using the device to bend the air defense net of the present invention is: the method comprises the following steps:

The first step, send the network

The welded mesh to be bent is forwarded by the mesh feeding mechanism, so that the position where the front end of the longitudinal rib of the civil air defense mesh needs to be bent reaches the front of the lower die of the longitudinal rib;

The second step is to bend the longitudinal ribs at the front end of the mesh

The first (1) step, the lower mold lifting mechanism drives the longitudinal rib lower mold to move up, so that the longitudinal rib lower mold top is at the bottom of the longitudinal rib that needs to be bent;

In the second step, the upper beam lifting mechanism drives the upper beam to press down, so that the upper fixing plate is pressed above the longitudinal rib that needs to be bent, and the upper fixing plate and the lower mold of the longitudinal rib clamp and fix the longitudinal rib;

Step (3), the front bending cylinder drives the front bending upper die to press down, and the longitudinal rib is bent along the front of the longitudinal rib lower die;

(4) The front bending cylinder drives the front bending upper die to move up, and the upper beam lifting mechanism drives the upper beam to move up, so that the upper fixed plate leaves the longitudinal bars;

The third step, continue to send the network

The net feeding mechanism feeds the net forward, so that both ends of the transverse rib reach above the lower die of the transverse rib of the transverse rib bending mechanism;

The fourth step is to bend the transverse ribs on both sides of the mesh

The first (1) step, the ejector rod of the pressing block cylinder drives the pressing block to press down, and the transverse rib is pressed and fixed by the pressing block and the lower die of the transverse rib;

In the second step, the upper die cylinder drives the upper die of the transverse bar to press down, and the transverse bar is bent under the action of the upper die of the transverse bar and the lower die of the longitudinal bar;

In step (3), the upper die cylinder drives the horizontal rib and the upper die to move up, the ejector rod of the pressing block cylinder drives the pressing block to move up, and the pressing block leaves the horizontal rib;

In step (4), the net feeding mechanism continues to feed the net forward, and the two ends of the adjacent transverse ribs reach above the lower mold of the transverse rib of the transverse rib bending mechanism. Repeat steps (1) to (3) until the last step of the mesh sheet After the root transverse rib is bent, go to the next step;

The fifth step, continue to send the net

The mesh is forwarded by the mesh feeding mechanism, so that the position where the rear end of the longitudinal rib of the air defense mesh needs to be bent reaches the rear of the lower die of the longitudinal rib;

The sixth step is to bend the longitudinal ribs at the rear end of the mesh

The first (1) step, the lower mold lifting mechanism drives the longitudinal rib lower mold to move up, so that the longitudinal rib lower mold top is at the bottom of the longitudinal rib that needs to be bent;

In the second step, the upper beam lifting mechanism drives the upper beam to press down, so that the upper fixing plate is pressed above the longitudinal rib that needs to be bent, and the upper fixing plate and the lower mold of the longitudinal rib clamp and fix the longitudinal rib;

In step (3), the rear bending cylinder drives the rear bending upper die to press down, and the longitudinal rib is bent along the back of the longitudinal rib lower die;

(4) The rear bending cylinder drives the rear bending upper die to move up, and the upper beam lifting mechanism drives the upper beam to move up, so that the upper fixed plate leaves the longitudinal bars;

The seventh step, send out the mesh

The folded mesh is sent out through the mesh feeding mechanism.

Compared with the prior art, the human air defense net bending device provided by the present invention has the following advantages: firstly, since it includes a frame body with a net feeding mechanism, a longitudinal rib bending mechanism is arranged on the frame body, and A transverse rib bending frame is arranged in front of the longitudinal rib bending mechanism, and a transverse rib bending mechanism is oppositely arranged at both ends of the transverse rib bending frame; the longitudinal rib bending mechanism includes a longitudinal rib bending lower part and a longitudinal rib bending mechanism. The upper part is bent, and the lower part of the longitudinal rib bending includes a front support plate and a rear support plate fixed with the frame body, a lower mold groove is formed between the front support plate and the rear support plate, and a lower mold groove is formed in the lower mold groove. A lower mold bracket is provided, a longitudinal rib lower mold is fixed above the lower mold bracket, and is connected to the frame body through a lower mold lifting mechanism below the lower mold bracket; the upper part of the longitudinal rib is bent It includes a front pressure plate and a rear pressure plate fixed with the frame body, an upper fixed plate groove is formed between the front pressure plate and the rear pressure plate, an upper fixed plate is arranged in the upper fixed plate groove, and the upper fixed plate is above the upper fixed plate. It is fixed with the upper beam, the upper beam is fixed with the lifting mechanism of the upper beam, and the front pressing plate and the rear pressing plate are respectively provided with a front bending upper die and a rear bending upper die. The upper bending die is respectively connected with the front bending cylinder and the rear bending cylinder; the transverse rib bending mechanism includes a transverse rib bending frame, and a transverse rib lower mold is arranged under the transverse rib bending frame, and a transverse rib lower mold is arranged above the transverse rib lower mold. The transverse rib bending frame is provided with a pressure block, and the pressure block is fixed with the ejector rod of the pressure block cylinder fixed on the transverse rib bending frame, and a transverse rib upper mold is arranged obliquely above the transverse rib lower mold, and the transverse rib upper mold It is connected with the top rod of the upper mold cylinder fixed on the transverse rib bending frame. When the position where the front end of the longitudinal rib of the civil air defense mesh needs to be bent reaches the front of the longitudinal rib lower mold, the lower mold lifting mechanism drives the longitudinal rib lower mold to move up. , so that the top of the lower mold of the longitudinal bar is at the bottom of the longitudinal bar that needs to be bent, and the upper beam lifting mechanism drives the upper beam to press down, so that the upper fixed plate is pressed above the longitudinal bar that needs to be bent, and the upper fixed plate and the lower mold of the longitudinal bar will be longitudinally pressed. The rib is clamped and fixed. At this time, the front bending cylinder drives the front bending upper die to press down, the longitudinal rib is bent along the front of the longitudinal rib lower die, and the bending is completed. After bending the front end of the air defense mesh, the front bending cylinder drives The front bending upper die moves up, the upper beam lifting mechanism drives the upper beam to move up, so that the upper fixed plate leaves the longitudinal bars, and the net feeding mechanism feeds the net forward. The ejector rod of the pressing block cylinder drives the pressing block to press down, and the transverse rib is pressed and fixed by the pressing block and the lower die of the transverse rib. At this time, the upper die cylinder drives the upper die of the transverse rib to press down, and the transverse rib is bent under the action of the upper die of the transverse rib and the lower die of the longitudinal rib. The upper die cylinder drives the transverse rib and the upper die to move up, the ejector rod of the pressure block cylinder drives the pressure block to move up, the pressure block leaves the transverse rib, the net feeding mechanism continues to feed the net forward, and the transverse rib bending mechanism bends each transverse rib, and the When the position where the rear end of the longitudinal bar needs to be bent reaches the back of the lower die of the longitudinal bar, the lower die lifting mechanism drives the lower die of the longitudinal bar to move up, so that the top of the lower die of the longitudinal bar is at the bottom of the longitudinal bar that needs to be bent, and the upper beam lifting mechanism drives The upper beam is pressed down so that the upper fixed plate is pressed above the longitudinal rib to be bent, and the upper fixed plate and the lower mold of the longitudinal rib clamp and fix the longitudinal rib. At this time, the rear bending cylinder drives the rear bending upper mold to press down. The longitudinal rib is bent along the back of the lower die of the longitudinal rib, and the bending is completed. After the rear end of the sheet is bent, the rear bending cylinder drives the upper mold for rear bending to move up, the upper beam lifting mechanism drives the upper beam to move up, so that the upper fixed plate leaves the longitudinal bars, and the mesh feeding mechanism sends out the mesh to complete the entire bending. process, low labor intensity, high production efficiency, accurate bending position, accurate bending angle, and good flatness of the mesh surface; The front bending upper die and the rear bending upper die are respectively movably connected to the front pressing plate and the rear pressing plate through the front fixed shaft and the rear fixed shaft, so that the bending power is small and the bending position is more accurate; The upper die includes a transverse rib upper die frame and a pressing wheel fixed on the transverse rib upper die set. The transverse rib has low bending resistance and is more convenient to bend.

Description of drawings

Fig. 1 is the structural representation of the present invention's anti-net bending device;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the structural representation of the human air defense net bending device observed from the rear side;

Figure 5 is a schematic structural diagram of a transverse rib bending frame with a transverse rib bending mechanism;

Fig. 6 is the structural schematic diagram of the transverse rib bending mechanism on the left side;

FIG. 7 is a cross-sectional view of the left lateral rib bending mechanism.

Detailed ways

The structure and use principle of the anti-bending device of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the structure diagram of the present invention's anti-net bending device, the present invention's anti-net bending device comprises a Frame body 2, a longitudinal rib bending mechanism 3 is arranged on the frame body 2, a transverse rib bending frame 4 is arranged in front of the longitudinal rib bending mechanism 3, and a transverse rib bending mechanism is oppositely arranged at both ends of the transverse rib bending frame 4 5.

As shown in FIG. 3 and FIG. 4 , the longitudinal rib bending mechanism includes a longitudinal rib bending lower part 6 and a longitudinal rib bending upper part 7 , and the longitudinal rib bending lower part 6 includes a front support plate 61 and a rear support plate fixed with the frame body 2 62. A lower mold groove 63 is formed between the front support plate 61 and the rear support plate 62, and a lower mold bracket 64 is arranged in the lower mold groove 63, and a longitudinal rib lower mold 65 is fixed above the lower mold bracket 64. The lower part of the bracket 64 is connected with the frame body 2 through the lower mold lifting mechanism 66 . The upper part 7 of the longitudinal rib bending includes a front pressing plate 71 and a rear pressing plate 72 fixed to the frame body 2 , an upper fixing plate groove 73 is formed between the front pressing plate 71 and the rear pressing plate 72 , and an upper fixing plate is arranged in the upper fixing plate groove 73 74, the top of the upper fixing plate 74 is fixed with the upper beam 75, the upper beam 75 is fixed with the upper beam lifting mechanism 76, and the front pressing plate 71 and the rear pressing plate 72 are respectively provided with a front bending upper die 77 and a rear bending upper die 78, The front bending upper die 77 and the rear bending upper die 78 are respectively connected with the front bending cylinder 79 and the rear bending cylinder 80 .

As shown in FIG. 5 , FIG. 6 and FIG. 7 , the transverse rib bending mechanism 5 includes a transverse rib bending frame 51 , and a transverse rib lower mold 52 is provided below the transverse rib bending frame 51 , and the transverse rib above the transverse rib lower mold 52 is bent The frame is provided with a pressing block 53, the pressing block 53 is fixed with the top rod of the pressing block cylinder 54 fixed on the transverse rib bending frame 51, and a transverse rib upper mold 55 is arranged obliquely above the transverse rib lower mold 52, and the transverse rib upper mold 55 is fixed with The top rod of the upper die cylinder 56 on the transverse rib bending frame 51 is connected.

The welded mesh to be bent is forwarded by the mesh feeding mechanism 1. When the position where the front end of the longitudinal rib of the civil air defense mesh needs to be bent reaches the front of the longitudinal rib lower mold 65, the lower mold lifting mechanism 66 drives the longitudinal rib lower mold 65 up The upper beam lifting mechanism 76 drives the upper beam 75 to press down, so that the upper fixing plate 74 is pressed above the longitudinal rib that needs to be bent, and the upper fixing plate 74 and The longitudinal rib lower mold 65 clamps and fixes the longitudinal rib. At this time, the front bending cylinder 79 drives the front bending upper mold 77 to press down, and the longitudinal rib is bent along the front of the longitudinal rib lower mold 65, and the bending is completed. After the front end of the air defense mesh is bent, the front bending cylinder 79 drives the front bending upper die 77 to move up, and the upper beam lifting mechanism 76 drives the upper beam 75 to move up, so that the upper fixing plate 74 is separated from the longitudinal bars, and the net feeding mechanism 1 The net is fed forward, and when both ends of the transverse rib reach above the transverse rib lower die 52 of the transverse rib bending mechanism 5, the ejector rod of the pressing block cylinder 54 drives the pressing block 53 to press down, and the horizontal rib is pressed and fixed by the pressing block 53 and the horizontal rib lower die 52. , At this time, the upper die cylinder 56 drives the upper die 55 of the transverse rib to press down, the transverse rib is bent under the action of the upper die 55 of the transverse rib and the lower die 52 of the longitudinal rib, the upper die cylinder 56 drives the upper die 55 of the transverse rib to move up, and the top of the pressing block cylinder 54 The rod drives the pressing block 53 to move up, and the pressing block 53 leaves the transverse rib. The net feeding mechanism continues to feed the net forward, and the transverse rib bending mechanism 5 bends each transverse rib. When the position where the rear end of the longitudinal rib of the civil air defense mesh needs to be bent reaches the rear of the longitudinal rib lower mold 65, the lower mold lifting mechanism 66 drives the vertical rib. The rib lower mold 65 is moved up, so that the longitudinal rib lower mold 65 is pressed against the bottom of the longitudinal rib to be bent, and the upper beam lifting mechanism 76 drives the upper beam 75 to press down, so that the upper fixing plate 74 is pressed above the longitudinal rib that needs to be bent, The upper fixing plate 74 and the longitudinal rib lower mold 65 clamp and fix the longitudinal ribs. At this time, the rear bending cylinder 80 drives the rear bending upper mold 78 to press down, and the longitudinal ribs are bent along the rear of the longitudinal rib lower mold 65, and the bending is completed. After the rear end of the air defense mesh is bent, the rear bending cylinder 80 drives the rear bending upper die 78 to move up, and the upper beam lifting mechanism 76 drives the upper beam 75 to move up, so that the upper fixing plate is separated from the longitudinal bars, and the net feeding mechanism moves the upper beam 75 upward. The mesh is sent out to complete the entire bending process, with low labor intensity, high production efficiency, accurate bending position, accurate bending angle, and good mesh surface flatness.

A front fixing shaft 711 and a rear fixing shaft 721 are respectively provided on the front pressing plate 71 and the rear pressing plate 72. The front bending upper die 77 and the rear bending upper die 78 are connected to the front pressing plate 71 through the front fixing shaft 711 and the rear fixing shaft 721 respectively. It is movably connected with the rear pressing plate 72, the bending power is small, and the bending position is more accurate.

The transverse rib upper mold 55 includes a transverse rib upper mold frame 551 and a pressing wheel 552 fixed on the transverse rib upper mold frame. The transverse rib has low bending resistance and is more convenient to bend.

The transverse rib upper mold 55 includes a transverse rib upper mold frame 551 and a pressing wheel 552 fixed on the transverse rib upper mold frame 551. The transverse rib has low bending resistance and is more convenient to bend.

The method includes the following steps:

The first step, send the network

The welded mesh to be bent is forwarded by the mesh feeding mechanism 1, so that the position where the front end of the longitudinal rib of the civil air defense mesh needs to be bent reaches the front of the lower die 65 of the longitudinal rib;

The second step is to bend the longitudinal ribs at the front end of the mesh

The first (1) step, the lower mold lifting mechanism 66 drives the longitudinal rib lower mold 62 to move up, so that the longitudinal rib lower mold 65 is placed on the bottom of the longitudinal rib that needs to be bent;

The second step, the upper beam lifting mechanism 76 drives the upper beam 75 to press down, so that the upper fixing plate 74 is pressed above the longitudinal rib that needs to be bent, and the upper fixing plate 74 and the longitudinal rib lower mold 65 clamp and fix the longitudinal rib;

In step (3), the front bending cylinder 79 drives the front bending upper die to press down, and the longitudinal rib is bent along the front of the longitudinal rib lower die;

(4) The front bending cylinder drives the front bending upper die 77 to move up, and the upper beam lifting mechanism 76 drives the upper beam 75 to move up, so that the upper fixing plate 74 is separated from the longitudinal bars;

The third step, continue to send the network

The net feeding mechanism 1 feeds the net forward, so that both ends of the transverse rib reach above the transverse rib lower die 52 of the transverse rib bending mechanism 5;

The fourth step is to bend the transverse ribs on both sides of the mesh

The first (1) step, the ejector rod of the pressure block cylinder 54 drives the pressure block 53 to press down, and the transverse rib is pressed and fixed by the pressure block 53 and the transverse rib lower mold 52;

In step (2), the upper die cylinder 53 drives the transverse rib upper die 55 to press down, and the transverse rib is bent under the action of the transverse rib upper die 55 and the longitudinal rib lower die 52;

In step (3), the upper die cylinder 56 drives the transverse rib and upper die 55 to move upward, and the ejector rod of the pressure block cylinder 54 drives the pressure block 53 to move upward, and the pressure block 53 leaves the transverse rib;

In step (4), the net feeding mechanism continues to feed the net forward, and the two ends of the adjacent transverse ribs reach the upper 52 squares of the transverse rib lower die of the transverse rib bending mechanism, and repeat steps (1) to (3) until the mesh After the last rib is bent, go to the next step;

The fifth step, continue to send the net

The mesh is forwarded by the mesh feeding mechanism 1, so that the position where the rear end of the longitudinal rib of the civil air defense mesh needs to be bent reaches the rear of the lower die 65 of the longitudinal rib;

The sixth step is to bend the longitudinal ribs at the rear end of the mesh

In the first (1) step, the lower mold lifting mechanism 66 drives the longitudinal rib lower mold 65 to move up, so that the longitudinal rib lower mold 65 is placed on the bottom of the longitudinal rib that needs to be bent;

The second step, the upper beam lifting mechanism 76 drives the upper beam 75 to press down, so that the upper fixing plate 74 is pressed above the longitudinal rib that needs to be bent, and the upper fixing plate 74 and the longitudinal rib lower mold 65 clamp and fix the longitudinal rib;

In the third step, the rear bending cylinder 80 drives the rear bending upper die 78 to press down, and the longitudinal ribs are bent along the rear of the longitudinal rib lower die 65;

(4) The rear bending cylinder 80 drives the rear bending upper die 78 to move up, and the upper beam lifting mechanism 76 drives the upper beam 75 to move up, so that the upper fixing plate 74 is separated from the longitudinal bars;

The seventh step, send out the mesh

The folded mesh is sent out through the mesh feeding mechanism.

The protection scope of the present invention's anti-net bending device and the method of using the same for human anti-net bending is not limited to the above-mentioned embodiments, as long as the structure is the same as or similar to the structure of the present invention's anti-net bending device, or the device is used for civil air defense The method of mesh bending is the same as or similar to this method, and falls within the protection scope of the present invention.

Claims (4)

1. People's air defense net bending device, including having the support body that send the net mechanism, its characterized in that: a longitudinal rib bending mechanism is arranged on the frame body, a transverse rib bending frame is arranged in front of the longitudinal rib bending mechanism, and transverse rib bending mechanisms are oppositely arranged at two ends of the transverse rib bending frame;

the longitudinal rib bending mechanism comprises a longitudinal rib bending lower part and a longitudinal rib bending upper part, the longitudinal rib bending lower part comprises a front supporting plate and a rear supporting plate which are fixed with the frame body, a lower die cavity is formed between the front supporting plate and the rear supporting plate, a lower die bracket is arranged in the lower die cavity, a longitudinal rib lower die is fixed above the lower die bracket, and the lower die bracket is connected with the frame body through a lower die lifting mechanism; the upper bending part of the longitudinal rib comprises a front pressing plate and a rear pressing plate which are fixed with the frame body, an upper fixing plate groove is formed between the front pressing plate and the rear pressing plate, an upper fixing plate is arranged in the upper fixing plate groove, the upper part of the upper fixing plate is fixed with an upper beam, the upper beam is fixed with an upper beam lifting mechanism, a front bending upper die and a rear bending upper die are respectively arranged on the front pressing plate and the rear pressing plate, and the front bending upper die and the rear bending upper die are respectively connected with a front bending cylinder and a rear bending cylinder;

the transverse rib bending mechanism comprises a transverse rib bending frame, a transverse rib lower die is arranged below the transverse rib bending frame, a pressing block is arranged on the transverse rib bending frame above the transverse rib lower die, the pressing block is fixed with an ejector rod of a pressing block cylinder fixed on the transverse rib bending frame, an upper transverse rib die is arranged obliquely above the transverse rib lower die, and the upper transverse rib die is connected with the ejector rod of an upper die cylinder fixed on the transverse rib bending frame.

2. The civil air defense net bending device according to claim 1, characterized in that: the front pressing plate and the rear pressing plate are respectively provided with a front fixed shaft and a rear fixed shaft, and the front bending upper die and the rear bending upper die are respectively movably connected with the front pressing plate and the rear pressing plate through the front fixed shaft and the rear fixed shaft.

3. The civil air defense net bending device according to claim 1, characterized in that: the transverse rib upper die comprises a transverse rib upper die frame and a pressing wheel fixed on the transverse rib upper die frame.

4. A method of bending using the device of claim 1, 2 or 3, characterized in that: the method comprises the following steps:

first, the net is delivered

The welded mesh to be bent is fed forward through a mesh feeding mechanism, so that the position, needing to be bent, of the front end of the longitudinal rib of the civil air defense mesh reaches the front of the lower longitudinal rib die;

secondly, bending the longitudinal ribs at the front end of the net sheet

Firstly, driving a longitudinal bar lower die to move upwards by a lower die lifting mechanism so that the longitudinal bar lower die is abutted to the bottom of a longitudinal bar to be bent;

secondly, the upper beam lifting mechanism drives the upper beam to press downwards, so that the upper fixing plate is pressed above the longitudinal ribs to be bent, and the upper fixing plate and the longitudinal rib lower die clamp and fix the longitudinal ribs;

thirdly, the front bending cylinder drives the front bending upper die to press downwards, and the longitudinal ribs are bent along the front of the longitudinal rib lower die;

a fourth front bending cylinder drives a front bending upper die to move upwards, and an upper beam lifting mechanism drives an upper beam to move upwards so that an upper fixing plate is separated from the longitudinal ribs;

thirdly, continuing to send the network

The net feeding mechanism feeds the net forwards, so that two ends of the transverse rib reach the upper part of the transverse rib lower die of the transverse rib bending mechanism;

fourthly, bending the transverse ribs on the two sides of the net piece

Firstly, a mandril of a briquetting cylinder drives a briquetting to be pressed downwards, and a transverse bar is pressed and fixed by the briquetting and a transverse bar lower die;

secondly, the upper die cylinder drives the transverse rib upper die to press downwards, and the transverse rib bends under the action of the transverse rib upper die and the longitudinal rib lower die;

thirdly, the upper die cylinder drives the transverse rib upper die to move upwards, a mandril of the briquetting cylinder drives the briquetting to move upwards, and the briquetting leaves the transverse rib;

step (four), the net feeding mechanism continues to feed the net forwards, two ends of adjacent transverse ribs reach above a transverse rib lower die of the transverse rib bending mechanism, and the steps from the step (first) to the step (third) are repeated until the last transverse rib of the net sheet is bent, and then the next step is carried out;

fifthly, continuing to send the net

The mesh is fed forward through a mesh feeding mechanism, so that the position, which needs to be bent, of the rear end of the longitudinal rib of the civil air defense mesh reaches the rear part of the lower die of the longitudinal rib;

sixthly, bending the longitudinal ribs at the rear end of the net sheet

Firstly, driving a longitudinal bar lower die to move upwards by a lower die lifting mechanism so that the longitudinal bar lower die is abutted to the bottom of a longitudinal bar to be bent;

secondly, the upper beam lifting mechanism drives the upper beam to press downwards, so that the upper fixing plate is pressed above the longitudinal ribs to be bent, and the upper fixing plate and the longitudinal rib lower die clamp and fix the longitudinal ribs;

thirdly, the rear bending cylinder drives the rear bending upper die to press downwards, and the longitudinal ribs are bent along the rear of the longitudinal rib lower die;

fourthly, the rear bending cylinder drives the rear bending upper die to move upwards, and the upper beam lifting mechanism drives the upper beam to move upwards so that the upper fixing plate is separated from the longitudinal ribs;

seventh, the mesh sheet is sent out

And delivering the folded net sheet through a net delivering mechanism.

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