A shell forming device for a junction box

Abstract

The present application relates to the technical field of junction box forming, and specifically relates to a shell forming device for a junction box, which comprises a workbench, a pressing plate and a cutting-off knife, the pressing plate and the cutting-off knife are both arranged on the top of the workbench, the pressing plate presses the processed plate, and the cutting-off knife cuts off the bent plate, the top of the workbench is rotationally connected with a bending lifting plate, the bottom of the bending lifting plate is driven by an electric push rod, and the device further comprises a magnetic attraction fixing assembly which is distributed below the end of the pressing plate; the device replaces the push rod at one end of the pressing plate by the magnetic attraction fixing assembly, the magnetic attraction fixing assembly is demagnetized and separated from the pressing plate after bending and cutting off, a gap is formed for the box to pass through after the single-side lifting of the pressing plate, the horizontal section of the box can directly pass through the gap and be taken out, the box does not need to be pried open, and the process of subsequent resetting and bending is also not needed, the automatic discharging can be realized by matching the cylinder push plate and the sensing control program, the processing rhythm of the continuous production line is adapted, and the overall production efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of junction box molding technology, and more specifically to a junction box shell molding apparatus. Background Technology

[0002] A junction box is a terminal wiring device used for distribution and scheduling in a system. It has the function of wiring distribution and is a distribution device that connects a main circuit to multiple outgoing lines. It includes high-voltage and low-voltage junction boxes, optical cable junction boxes, and communication junction boxes. They all have equipment such as a box body, a fixed incoming line area, and busbars, and generally have certain protection requirements.

[0003] The common forming process of junction box shells can be roughly summarized as follows: after the steel is uncoiled, it passes through a stamping system and a roll forming machine, and then is bent and cut to form the box body. Currently, bending and cutting are accomplished by lifting and lowering hydraulic cylinders. After the final cutting step is completed, the box body is formed, but it needs to be manually pried open at some angles before the box body is taken out. When prying open the box body, there is no uniform standard for the size and angle of the opening. After taking it out, it needs to be bent back to form a regular rectangle. Therefore, it greatly affects the forming efficiency of the box body and is not conducive to quickly connecting subsequent welding and other related processes. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a casing forming device for a junction box, which can effectively solve the problem of how to improve the ease of removal of the casing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a casing forming device for a junction box, including a worktable, a pressing plate, and a cutting blade. The pressing plate and the cutting blade are both located on the top of the worktable. The pressing plate presses down on the processed sheet metal, and the cutting blade cuts the bent sheet metal. A bending lifting plate is rotatably connected to the top of the worktable, and the bottom of the bending lifting plate is driven by an electric push rod. The device also includes: A magnetic fixing component is located below the end of the pressing plate. The other end of the pressing plate is driven by a push rod. When the pressing plate moves to its lowest position, the magnetic fixing component fixes the position of the end of the pressing plate. After the pressing plate is lifted by the push rod, the magnetic fixing component separates from the pressing plate, and the outer shell of the box can be removed from between the magnetic fixing component and the pressing plate.

[0006] Furthermore, it also includes: The adsorption and fixing component includes multiple suction cups distributed within the bending lifting plate, which adsorb onto the underside of the sheet material at the top of the bending lifting plate to fix the sheet material.

[0007] Furthermore, the magnetic fixing assembly includes a mounting post and a connector fixed to the bottom of the end of the pressing plate. A positioning post is fixedly connected to the bottom of the connector. The mounting post is fixedly installed on the top of the push rod. A positioning cylinder is fixedly connected to the top of the mounting post. An electromagnet is fixedly connected inside the positioning cylinder. After the positioning post falls, it comes into contact with the second electromagnet, and the second electromagnet generates a magnetic attraction force on the positioning post, fixing the position of the positioning post.

[0008] Furthermore, the positioning cylinder is wider at the top and narrower at the bottom, and multiple grippers are rotatably connected to the top. The connection between the grippers and the positioning cylinder is provided with a torsion spring, and the top of the grippers opens outward toward the positioning cylinder under the support of the torsion spring.

[0009] Furthermore, the bottoms of the two symmetrically distributed grippers extend downwards, and the positioning cylinder moves down to a low position, with the two grippers contacting the top of the worktable.

[0010] Furthermore, the adsorption and fixing assembly includes a piston box that supplies negative pressure to the suction cup. The piston box is fixedly installed at the bottom of the bending lifting plate. A piston plate is slidably connected inside the piston box, and the piston box and the suction cup are connected at the top side of the piston box. After the piston plate moves down, the upper part inside the piston box generates negative pressure and transmits it to the suction cup, causing the suction cup that is in contact with the bottom of the plate to adhere to the bottom of the plate.

[0011] Furthermore, a fixed frame is fixedly connected to one side of the workbench, and multiple electromagnets are fixedly connected to the top of the fixed frame. Multiple pull rods are rotatably connected to the bottom of the piston plate. When the bending lifting plate is in a horizontal state, the bottom of the pull rods is magnetically attracted by the electromagnets.

[0012] Furthermore, a conduction box is connected to the top side of the piston housing. The conduction box is fixedly connected to the bottom of the bending lifting plate. Multiple conduits are embedded in the conduction box, and a flexible hose is fixedly connected between the conduits and the suction cup.

[0013] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. By replacing the push rod at one end of the pressing plate with a magnetic fixing component, the magnetic attraction between the electromagnet two inside the mounting column and positioning cylinder and the positioning column fixes the position of that end of the pressing plate during the pressing plate's downward movement to press the material. Combined with the drive of the push rod at the other end, the pressing plate can reliably press the material even under downward pressure. After bending and cutting are completed, it is only necessary to de-energize the electromagnet two and lift the pressing plate separately using the push rod at one end. This creates a gap between the end of the pressing plate and the positioning cylinder, allowing the housing to pass through. Since the cutting position is located behind the pressing plate and directly below the cutting blade... The fracture point of the sheet metal is also located behind the pressing plate. The last unconnected part of the outer shell of the box is partly vertical and partly horizontal. The horizontal part of the box can be directly removed through the position between the pressing plate and the magnetic fixing component without manually prying the box open to enlarge the opening. This material removal method is more convenient. With a simple cylinder and push plate, the bent and cut box can be pushed out directly. With the addition of sensors and related control programs, automated production can be achieved. At the same time, it avoids prying open the box, and there is no need to bend the box back in the subsequent welding work, reducing subsequent processes.

[0014] 2. The positioning cylinder is flared, wider at the top and narrower at the bottom. Multiple grippers, rotatably connected to its top, open outwards under the support of torsion springs. After the electromagnet is de-energized and one end of the pressing plate rises independently, space is created for the housing to pass through. After the housing is removed, the mounting post rises under the drive of the push rod. The multiple open grippers, like open grasping hands, guide the positioning post towards the center of the positioning cylinder when one gripper contacts it. The multiple grippers collectively hold the positioning post, and the grippers fixed by the rotating shaft provide positioning. Then, the electromagnet is activated, firmly magnetically attracting the positioning post, awaiting the next downward press of the pressing plate. To ensure consistent positioning during repetitive actions, two symmetrically distributed grippers extend downwards at their bottoms, contacting the top surface of the worktable after the positioning cylinder has moved to a low position. By increasing the contact between the grippers and the worktable, and with the level of the top surface of the worktable, these two grippers calibrate the position of the positioning cylinder and support the position of the positioning cylinder and the various components above it. These two grippers can also extend upwards appropriately, clamping both sides of the pressing plate when the electromagnet attracts the positioning column, assisting in fixing the pressing plate. The part of the pressing plate directly connected to the push rod is limited by an appropriate slide bar to ensure the horizontal state of the pressing plate during lifting and lowering.

[0015] 3. When the bending lifting plate is in a horizontal state, the pull rod connected to the bottom of the piston plate is magnetically attracted by the electromagnet at the top of the fixing frame. When the bending lifting plate folds upward, it lifts the fixing frame and the conduction box upward together. At the same time, the electromagnet pulls the pull rod through magnetic attraction, forcing the piston plate to slide downward in the piston box. A negative pressure is generated in the upper space of the piston box, which is transmitted to the suction cup through the conduction box, conduit, and hose. This creates a negative pressure between the suction cup and the plate, causing it to adhere to the bottom of the plate. After the bending lifting plate flips to a certain angle, the electromagnet is de-energized, the pull rod separates directly from the electromagnet, and the suction cup maintains its adhesion to the plate. Due to the change in height and angle... As the piston plate rotates, the pull rod rotates below it. Simultaneously, the piston box is at the end of the bending lifting plate's rotation position, which is the position with the fastest linear speed during bending lifting plate rotation. This allows for the rapid generation of negative pressure when the bending lifting plate is driven upwards by the push rod. Even with a small number of suction cups, it can achieve adsorption of the board material in a very short time, thus avoiding the need for an additional vacuum device. Furthermore, it is directly synchronized with the flipping action on a mechanical level. The timing of the de-energization of the electromagnet directly affects the time and magnitude of the negative pressure generation. The timing of the de-energization should be adjusted by the control system based on factors such as the size of the suction cups and the smoothness of the board material, while ensuring the adsorption effect.

[0016] 4. Multiple suction cups distributed within the bending lifting plate adhere to the underside of the sheet metal, providing a certain degree of fixation and reducing wobbling during bending, ensuring bending quality and precision. The end faces of the suction cups are flush with the top surface of the bending lifting plate, ensuring complete contact between the sheet metal and the suction cup end faces when the sheet metal contacts the bending lifting plate. The outer periphery of the suction cup end faces is made of rubber or a similar flexible and resilient material, which conforms to the sheet metal and provides some support for the shape of the suction cups. Several through holes are provided on the bending lifting plate to provide installation positions for multiple suction cups. In different production batches, the width of the housing varies, and the number and position of the suction cups can be adjusted appropriately to ensure that the suction cup adsorption position is in a position where there are no openings in the housing. Correspondingly, negative pressure is transmitted from the piston box to the conduction box, which has multiple conduits. Different positions and numbers of suction cups can be connected in different production batches. Unused conduits are plugged with caps using a threaded fit. The connection between the conduits and the hoses is secured by threaded sleeves, allowing the device to quickly adapt to the production of housing shells with different widths and opening positions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the pressing plate and magnetic fixing assembly of the present invention; Figure 3 This is a schematic diagram of the detachable structure of the magnetic attraction fixing component of the present invention; Figure 4 This is a partial bottom view of the structure of the present invention; Figure 5 This is a schematic diagram of the separation structure of the adsorption and fixation component of the present invention; Figure 6 This is a schematic diagram of the adsorption and fixation component of the present invention.

[0019] The labels in the diagram represent: 1. Workbench; 2. Pressing plate; 3. Press cutter; 4. Bending lifting plate; 5. Adsorption fixing assembly; 501. Fixing frame; 502. Piston box; 503. Suction cup; 504. Piston plate; 505. Pull rod; 506. Electromagnet one; 507. Conducting box; 508. Conduit; 509. Hose; 6. Magnetic fixing assembly; 601. Mounting post; 602. Positioning cylinder; 603. Clamp; 604. Connector; 605. Positioning post; 606. Electromagnet two. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] Reference Figures 1 to 6 Example: A casing forming device for a junction box includes a worktable 1, a pressing plate 2, and a cutting blade 3. The pressing plate 2 and the cutting blade 3 are both located on the top of the worktable 1. The pressing plate 2 presses down on the processed sheet metal, and the cutting blade 3 cuts the bent sheet metal. A bending lifting plate 4 is rotatably connected to the top of the worktable 1, and the bottom of the bending lifting plate 4 is driven by an electric push rod. The device also includes: The magnetic fixing component 6 is located below the end of the pressing plate 2. The other end of the pressing plate 2 is driven by a push rod. When the pressing plate 2 moves to the lowest position, the magnetic fixing component 6 fixes the position of the end of the pressing plate 2. After the pressing plate 2 is lifted by the push rod, the magnetic fixing component 6 separates from the pressing plate 2, and the outer shell of the box can be removed from between the magnetic fixing component 6 and the pressing plate 2.

[0023] The adsorption and fixing component 5 includes multiple suction cups 503 distributed within the bending lifting plate 4, which adsorb onto the underside of the plate at the top of the bending lifting plate 4 to fix the plate.

[0024] When the pressing plate 2 is pressed down, its stability needs to be ensured. Therefore, in traditional equipment, there are push rods at both ends of the pressing plate 2, which lift and lower synchronously, providing high stability. On this basis, the cut box can only be pried open and taken out by passing through the pressing plate 2. However, a magnetic fixing component 6 is used to replace a push rod when the pressing plate 2 is pressed down and pressing the plate. Compared with the original two push rods, it is slightly inferior in terms of stability in the lifting position. The adsorption fixing component 5 provides a solution to stabilize the plate when the bending lifting plate 4 is folded upward.

[0025] The suction cup 503 on the bending lifting plate 4 can be attached to the bottom of the plate, which can provide a certain degree of fixation, reduce the shaking of the plate during the bending process, and ensure the bending quality and accuracy.

[0026] In the existing forming of enclosures such as junction boxes and distribution boxes, there is a highly automated production process. This process includes an integrated uncoiling and leveling machine, a splitting machine, a stamping system, and a roll forming host. After that, the final bending and cutting work begins. The integrated uncoiling and leveling machine uncoils and levels the coiled steel. The splitting machine then feeds the material precisely via servo. The stamping system stamps out excess material or shapes from the sheet metal. Next, the material undergoes multiple roll forming processes to form the cross-sectional shape of the enclosure. Finally, when the material passes through the pressing plate 2, it stops periodically and the pressing plate 2 presses down on the sheet metal. The push rod lifts the material upwards, and the bending lifting plate 4 bends the material upwards by about 90°. After three consecutive bends, the material forms the shape of the enclosure, completing the enclosure forming. Finally, the cutting blade 3 cuts the material downwards.

[0027] After being bent three times, the pressing plate 2 is lifted up by the push rod, and the magnetic fixing component 6 separates from the pressing plate 2. Since the cutting position is on the back of the pressing plate 2 and directly below the cutting blade 3, the break point of the plate is also on the back of the pressing plate 2. The last unconnected part of the outer shell is partly vertical and partly horizontal. The horizontal part of the shell passes through the position between the pressing plate 2 and the magnetic fixing component 6, and the bent and cut outer shell part can be directly taken out without manually prying the shell open to make the unconnected part of the shell open larger, and then passing through the part of the pressing plate 2.

[0028] The above-mentioned material handling method is more convenient. With a simple cylinder and push plate, the bent and cut box can be pushed out directly. With the addition of sensors and related control programs, automated production can be achieved. Furthermore, it avoids the need to break the box after bending, and in the subsequent welding process, the box does not need to be bent back, reducing subsequent steps.

[0029] Specifically, the magnetic fixing assembly 6 includes a mounting post 601 and a connector 604 fixed to the bottom of the end of the pressing plate 2. A positioning post 605 is fixedly connected to the bottom of the connector 604. The mounting post 601 is fixedly installed on the top of the push rod. A positioning cylinder 602 is fixedly connected to the top of the mounting post 601. An electromagnet 606 is fixedly connected inside the positioning cylinder 602. After the positioning post 605 falls, it contacts the electromagnet 606, and the electromagnet 606 generates a magnetic attraction force on the positioning post 605 to fix the position of the positioning post 605.

[0030] The positioning cylinder 602 is wider at the top and narrower at the bottom, resembling a trumpet shape, with a larger diameter at the top. Multiple grippers 603 are rotatably connected to the top. The connection between the grippers 603 and the positioning cylinder 602 is provided with a torsion spring, and the top of the grippers 603 opens outward toward the positioning cylinder 602 under the support of the torsion spring.

[0031] During precise servo conveying, the sheet material moves according to a specified length and stops after moving a certain distance. At this time, the positioning cylinder 602 is in a high position, and the electromagnet 606 inside it is attracted to the position column 605 below. The pressing plate 2 is in a high position as a whole. After the sheet material stops, the mounting column 601 and the pressing plate 2 move down synchronously. That is, the push rod at one end of the pressing plate 2 and the push rod at the bottom of the mounting column 601 retract synchronously. Both ends of the pressing plate 2 are pulled down to a low position to press down the sheet material, so that it can cooperate with the upward folding bending plate 4 to bend the sheet material.

[0032] After bending is completed, electromagnet 2 606 is de-energized and loses its magnetic attraction to positioning post 605. Pressing plate 2 rises independently under the drive of push rod at one end, creating a gap between one end of pressing plate 2 and positioning cylinder 602. At this time, gripper 603 resets, and the tops of multiple grippers 603 open outwards towards positioning cylinder 602. After the pressure cutter 3 cuts the box body, the box body can easily pass through the bottom of pressing plate 2 and the top of positioning cylinder 602 to remove the outer shell of the box body.

[0033] After the outer shell of the housing is removed, the mounting post 601 rises under the drive of the push rod. Multiple open grippers 603, like open claws, guide the positioning post 605 to slide towards the center of the positioning cylinder 602 when one of the grippers 603 contacts the positioning post 605. The multiple grippers 603 can hold the positioning post 605 together. The grippers 603 fixed by the rotating shaft hold the positioning post 605, which plays a certain positioning role. Then, the electromagnet 2 606 is activated, firmly magnetically attracting the positioning post 605, waiting for the next pressing action of the pressing plate 2.

[0034] It should be noted that during the downward movement of the positioning post 605, if there is a certain degree of positional displacement due to the fact that the pressing plate 2 is only supported by a push rod on one side, the positioning post 5 will contact the upper part of several open grippers 603 and continue to slide down along the inclined surface of the grippers 603, pressing the lower part of the grippers 603 to rotate into a vertical state until it contacts the electromagnet 606. Under the pressure of the positioning post 5, all the grippers 603 are in a vertical state. After the positioning post 5 rises, it loses the pressure on the lower part of the grippers 603, and the grippers 603 will reset under the action of the torsion spring.

[0035] Specifically, the bottoms of the two symmetrically distributed grippers 603 extend downwards, and the positioning cylinder 602 moves down to a low position, with the two grippers 603 contacting the top of the worktable 1.

[0036] When distributing the grippers 603, the position of the grippers 603 needs to be adjusted so that the two grippers 603 in contact with the top surface of the worktable 1 are symmetrically distributed. After the positioning cylinder 602 is lowered to a lower position, the two grippers 603 will contact the top surface of the worktable 1. The bottom plate of the grippers 603 is used to increase the contact with the worktable 1. The horizontality of the top surface of the worktable 1 is used to allow the positioning cylinder 602 to be lowered. The two grippers 603 calibrate the position of the positioning cylinder 602 and support the positioning cylinder 602 and the position of the components above it.

[0037] It should be noted that the two grippers 603 mentioned above can also extend upwards appropriately, and when the electromagnet 606 attracts the positioning post 605, they can clamp together on both sides of the pressing plate 2 to help fix the pressing plate 2. Correspondingly, since the pressing plate 2 needs to be lifted by a single push rod at a specific time, and the lifting position of the pressing plate 2 needs to be uniform, the part of the pressing plate 2 directly connected to the push rod needs to be appropriately limited by a sliding rod to ensure the horizontal state of the pressing plate 2 during lifting.

[0038] Specifically, the adsorption and fixing component 5 includes a piston box 502 that supplies negative pressure to the suction cup 503. The piston box 502 is fixedly installed at the bottom of the bending lifting plate 4. A piston plate 504 is slidably connected inside the piston box 502. The piston box 502 and the suction cup 503 are connected at the top side of the piston box 502. After the piston plate 504 moves down, the upper part inside the piston box 502 generates negative pressure and transmits it to the suction cup 503, so that the suction cup 503, which is in contact with the bottom of the plate, is adsorbed to the bottom of the plate.

[0039] The end face of suction cup 503 is flush with the top surface of bending lifting plate 4. When the plate comes into contact with bending lifting plate 4, it also comes into complete contact with the end face of suction cup 503. The outer periphery of the end face of suction cup 503 should be made of rubber or similar flexible and resilient material, which can fit the plate and provide some support to maintain the shape of suction cup 503. The suction cup 503 that fits the bottom of the plate can use negative pressure to adsorb the plate. When the plate is folded upward, several suction cups 503 help fix the position of the plate and reduce the shaking caused by bending.

[0040] Several through holes should be made on the bending lifting plate 4 to leave multiple installation positions for suction cups 503. In different batches of production, the width of the box is different, and the number and position of suction cups 503 can be adjusted appropriately to ensure that the suction cups 503 adsorb at the position where there are no openings in the box.

[0041] Specifically, a fixed frame 501 is fixedly connected to one side of the workbench 1, and multiple electromagnets 506 are fixedly connected to the top of the fixed frame 501. Multiple pull rods 505 are rotatably connected to the bottom of the piston plate 504. When the bending lifting plate 4 is in a horizontal state, the bottom of the pull rods 505 is magnetically attracted by the electromagnets 506.

[0042] When the bending lifting plate 4 is folded upwards, it lifts the fixing frame 501 and the conduction box 507 upwards together. At the same time, the electromagnet 506 pulls the pull rod 505 through magnetic attraction, forcing the piston plate 504 to slide downwards in the piston box 502. A negative pressure is generated in the upper space of the piston box 502, which is transmitted to the suction cup 503, thereby creating a negative pressure between the suction cup 503 and the plate. After the bending lifting plate 4 is flipped at a certain angle, the electromagnet 506 is de-energized, losing its magnetic attraction to the pull rod 505, and the pull rod 505 directly separates from the electromagnet 506. The suction cup 503 maintains its adsorption on the board and is located below the board. Due to the change in height and angle, the pull rod 505 will rotate below the piston plate 504. At the same time, the piston box 502 is at the end of the rotation position of the bending lifting plate 4, which is the position with the fastest rotational linear speed of the bending lifting plate 4. It can quickly generate negative pressure when the bending lifting plate 4 is driven to flip upward by the push rod. If there are few suction cups 503, the adsorption of the board can be achieved in a very short time, avoiding the use of an additional vacuum device. At the same time, it is directly synchronized with the flipping action on a mechanical level.

[0043] Among them, the timing of de-energizing electromagnet 506 directly affects the time and magnitude of negative pressure generation. The timing of de-energizing electromagnet 506 should be adjusted by the control system based on factors such as the size of suction cup 503 and the smoothness of the board, while ensuring the adsorption effect.

[0044] Specifically, a transmission box 507 is connected to the top side of the piston housing 502. The transmission box 507 is fixedly connected to the bottom of the bending lifting plate 4. Multiple conduits 508 are embedded in the transmission box 507. A flexible hose 509 is fixedly connected between the conduits 508 and the suction cup 503.

[0045] Negative pressure is transmitted through piston box 502. Multiple conduits 508 are left on the conduction box 507. In different batches of production activities, different positions and numbers of suction cups 503 are connected. The idle conduits 508 need to be blocked with caps in a threaded manner. The connection between the conduits 508 and the hose 509 is secured by threaded sleeves.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A casing forming device for a junction box, comprising a workbench (1), a pressing plate (2), and a cutting blade (3), wherein the pressing plate (2) and the cutting blade (3) are both disposed on the top of the workbench (1), the pressing plate (2) presses down on the processed sheet metal, and the cutting blade (3) cuts the bent sheet metal, wherein a bending lifting plate (4) is rotatably connected to the top of the workbench (1), and the bottom of the bending lifting plate (4) is driven by an electric push rod, characterized in that, Also includes: The magnetic fixing component (6) is located below the end of the pressing plate (2). The other end of the pressing plate (2) is driven by a push rod. When the pressing plate (2) moves down to the lowest position, the magnetic fixing component (6) fixes the position of the end of the pressing plate (2). After the pressing plate (2) is lifted by the push rod, the magnetic fixing component (6) separates from the pressing plate (2), and the outer shell of the box can be taken out from between the magnetic fixing component (6) and the pressing plate (2).

2. The casing forming device for a junction box according to claim 1, characterized in that, Also includes: The adsorption fixing component (5) includes multiple suction cups (503) distributed in the bending lifting plate (4), which are adsorbed on the bottom of the plate at the top of the bending lifting plate (4) to fix the plate.

3. The casing forming device for a junction box according to claim 1, characterized in that, The magnetic fixing assembly (6) includes a mounting post (601) and a connector (604) fixed at the bottom of the end of the pressing plate (2). A positioning post (605) is fixedly connected to the bottom of the connector (604). The mounting post (601) is fixedly installed on the top of the push rod. A positioning cylinder (602) is fixedly connected to the top of the mounting post (601). An electromagnet (606) is fixedly connected inside the positioning cylinder (602). After the positioning post (605) falls, it comes into contact with the electromagnet (606), and the electromagnet (606) generates a magnetic attraction force on the positioning post (605) to fix the position of the positioning post (605).

4. The casing forming device for a junction box according to claim 3, characterized in that, The positioning cylinder (602) is wider at the top and narrower at the bottom, and multiple grippers (603) are rotatably connected to the top. The grippers (603) are connected to the positioning cylinder (602) with torsion springs, and the top of the grippers (603) opens outward toward the positioning cylinder (602) under the support of the torsion springs.

5. The casing forming device for a junction box according to claim 4, characterized in that, Two of the symmetrically distributed grippers (603) extend downward at their bottoms, and the positioning cylinder (602) moves down to a low position, with the two grippers (603) contacting the top of the worktable (1).

6. The casing forming device for a junction box according to claim 2, characterized in that, The adsorption and fixing assembly (5) includes a piston box (502) that supplies negative pressure to the suction cup (503). The piston box (502) is fixedly installed at the bottom of the bending lifting plate (4). A piston plate (504) is slidably connected inside the piston box (502). The piston box (502) and the suction cup (503) are connected at the top side of the piston box (502). After the piston plate (504) moves down, the upper part of the piston box (502) generates negative pressure and transmits it to the suction cup (503), so that the suction cup (503) in contact with the bottom of the plate is adsorbed to the bottom of the plate.

7. The casing forming apparatus for a junction box according to claim 6, characterized in that, A fixed frame (501) is fixedly connected to one side of the workbench (1). Multiple electromagnets (506) are fixedly connected to the top of the fixed frame (501). Multiple pull rods (505) are rotatably connected to the bottom of the piston plate (504). When the bending lifting plate (4) is in a horizontal state, the bottom of the pull rod (505) is magnetically attracted by the electromagnets (506).

8. The casing forming apparatus for a junction box according to claim 7, characterized in that, The piston housing (502) has a conductive box (507) connected to the top side of its side. The conductive box (507) is fixedly connected to the bottom of the bending lifting plate (4). Multiple conduits (508) are embedded in the conductive box (507). A flexible hose (509) is fixedly connected between the conduits (508) and the suction cup (503).

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