A door panel end bending machine

Abstract

This utility model discloses a door panel end bending machine, relating to the field of door panel end bending. It aims to solve the problem in existing technologies where the clamping blade cannot fully hold the door panel during the second bending process due to the need for easy blade retraction, resulting in wrinkles or inconsistent corner radii at the bent portion. The technical solution involves installing a two-folding pressing mechanism on a hydraulic positioning mechanism. A clamping blade is installed on the two-folding pressing block of the two-folding pressing mechanism, and a telescopic structure is installed on the two-folding pressing block. The telescopic structure connects to a two-folding slider, which has an extension blade flush with the clamping blade. During bending, the extension blade extends to fully clamp the end of the door panel, ensuring a flat folded portion. After bending, the telescopic structure pulls the two-folding slider out from the end of the door panel, and the hydraulic positioning mechanism resets and discharges the material. This utility model achieves a flat surface after the second bending of the door panel end profile, and the structure is simple and easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of door panel end bending technology, specifically a door panel end bending machine. Background Technology

[0002] The TF100-1000X-0.8 door panel utilizes automated punching and roller bending technology. Through an automated roller bending production line, the vertical edges on both sides of the door panel are bent into shape, and individual semi-finished door panels are cut at pre-reserved cutting positions. During the bending process, an offline door panel end bending machine is used, employing pressing, flanging, and positioning components to perform a second bending of the semi-finished door panel, resulting in the finished door panel. Because the door panel ends require two bending to form a U-shaped structure, and both sides of the door panel also have U-shaped bends (such as...), Figure 2 As shown, after the door panel is bent and formed at the end, both ends of the bending and clamping tool will be wrapped in the head of the door panel and cannot be withdrawn (there is interference). If the length of the clamping tool is shortened so that the two ends of the tool avoid the side bending points on both sides of the head of the door panel, the two ends of the bent part of the door panel will wrinkle or have inconsistent local rounded corners due to insufficient support during bending, resulting in an uneven product surface and poor appearance flatness. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a door panel end bending machine that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model discloses a door panel end bending machine. The technical solution includes a frame with a hydraulic positioning mechanism and a flanging mechanism. Both the hydraulic positioning mechanism and the flanging mechanism correspond to and are sized to the processing positions on the frame. The machine also includes a controller electrically connected to the hydraulic positioning mechanism and the flanging mechanism. The hydraulic positioning mechanism includes a two-fold pressing mechanism, which includes a two-fold pressing block with an inner cavity surface and a clamping blade. A telescopic mechanism is mounted on the two-fold pressing block, connected to a two-fold slider. The two-fold slider has an extension blade, and the telescopic mechanism controls the extension of the two-fold slider to align the extension blade with the clamping blade. During bending, the telescopic mechanism extends the two-fold slider, aligning the extension blade with the clamping blade to provide complete support for the profile bending, ensuring a flat door panel end surface during the two bends. After bending, the two-fold slider retracts, avoiding the door panel end wrapping area, the hydraulic positioning mechanism resets, and the door panel is discharged. The inner cavity of the two-fold slider can provide space to accommodate the folded edge formed during a single bend.

[0005] In a preferred embodiment of this invention, the telescopic mechanism includes a fixed block mounted on the bi-fold pressure block. A bi-fold cylinder with a telescopic structure is mounted on the fixed block. The fixed block has a sliding groove, and the bi-fold slider is connected to a guide block, which slides within the sliding groove. The telescopic end of the bi-fold cylinder is connected to the guide block. The bi-fold cylinder is connected to a first air circuit control system, which is connected to an air source and electrically connected to the controller. The bi-fold cylinder drives the guide block to slide within the sliding groove, thereby driving the bi-fold slider to slide and extend along the direction of the sliding groove.

[0006] As a preferred embodiment of this utility model, the fixing block has an oil injection nozzle, which is connected to the slide groove to facilitate oil injection into the slide groove and ensure the smooth sliding of the guide block in the slide groove.

[0007] As a preferred embodiment of this utility model, the hydraulic positioning mechanism further includes a hydraulic cylinder, the fixed end of which is mounted on the frame, and the telescopic end is connected to an upper tool holder, which is connected to the double-folding pressing mechanism; the hydraulic cylinder is connected to a first hydraulic oil circuit control system, which is electrically connected to the controller.

[0008] As a preferred embodiment of this utility model, the flanging mechanism includes a flipping plate, which is hinged to the frame and has a cylinder head seat mounted on it. The frame is also equipped with a cylinder seat, and a flanging cylinder is hinged to the cylinder seat. The telescopic end of the flanging cylinder is hinged to the cylinder head seat. The flanging cylinder is connected to a second hydraulic circuit control system, which is electrically connected to the controller.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model sets a clamping knife and a retractable double-fold slider on the double-fold pressing mechanism of the hydraulic positioning mechanism. During bending, the double-fold slider extends, and the extended knife on the double-fold slider is flush with the clamping knife, providing sufficient and complete support for the bending of the door panel end, ensuring that the bent surface of the door panel end is flat. After two complete bends, the double-fold slider is retracted to avoid the wrapping area of ​​the door panel end, thereby enabling the hydraulic positioning mechanism to reset. This achieves a flat surface of the door panel end profile after the second bend. Moreover, this structure is simple in construction and easy to maintain. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0012] Figure 3This is a partial side view of the structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the two-fold pressing mechanism of this utility model;

[0014] Figure 5 This is a side view of the two-fold pressing mechanism of this utility model;

[0015] Figure 6 This is a partial cross-sectional structural diagram of the two-fold pressing mechanism of this utility model;

[0016] Figure 7 This is a block diagram illustrating the electrical control connection principle of this utility model;

[0017] Figure 8 This is a schematic diagram of the processing state of this utility model.

[0018] In the diagram: 1. Frame; 2. Hydraulic positioning mechanism; 3. Flanging mechanism; 4. Two-fold pressing mechanism; 401. Two-fold pressing block; 4011. Inner cavity surface; 4012. Pressing knife; 402. Two-fold slider; 4021. Guide block; 4022. Extension knife; 403. Fixing block; 4031. Oil injection nozzle; 4032. Slide groove; 404. Two-fold cylinder; 4041. Connecting block; 5. Flanging cylinder; 6. Cylinder seat; 7. Door panel; 8. Feeding table; 801. Universal ball. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0020] like Figures 1 to 7 As shown, this utility model discloses a door panel end bending machine. The technical solution includes a frame 1, which includes a top beam with side columns on both sides and a bottom beam connected below the side columns. A hydraulic cylinder with a hydraulic positioning mechanism 2 is mounted on the top beam. The fixed end of the hydraulic cylinder is vertically mounted on the top beam, and the telescopic end is connected downwards to a connecting beam. Fixed seats are connected to both ends of the connecting beam, and the fixed seats are connected to an upper cutter holder. The upper cutter holder is connected to a second bending mechanism 4. The hydraulic cylinder is connected to a first hydraulic oil circuit control system, which is electrically connected to a PLC controller. The PLC controller is electrically connected to a host computer.

[0021] like Figure 4 , Figure 5 , Figure 6As shown, the double-folding pressing mechanism 4 includes a double-folding pressing block 401. The double-folding pressing block 401 has an inner cavity surface 4011 to prevent interference between the double-folding pressing block 401 and the bending edge formed by the first bending during the second bending. A pressing knife 4012 is provided on the bottom surface of the double-folding pressing block 401 for pressing the door panel 7. To provide stable support for bending the door panel end, and to prevent the support from being trapped inside the door panel end after a second bend, thus preventing the blade from retracting, a fixing block 403 is connected to each end of the back of the two-fold pressure block 401. The fixing block 403 has a groove 4032 at a 45-degree angle to the two-fold pressure block 401. The guide block 4021 of the two-fold slider 402 is slidably connected in the groove 4032. The two-fold slider 402 has an extension blade 4022 parallel to the pressing blade 4012. The fixing block 403 is equipped with a two-fold cylinder 404. The cylinder rod end of the two-fold cylinder 404 is equipped with a connecting block 4041, which is connected to the guide block 4021. The two-fold cylinder 404 can control the sliding of the two-fold slider 402. To ensure the smooth sliding of the guide block 4021 within the slide groove 4032, an oil nozzle 4031 connected to the slide groove 4032 is installed on the fixed block 403. The two-stage cylinder 404 is connected to a first air circuit control system, which is connected to an air source and electrically connected to a PLC controller.

[0022] To enable bending of the door panel end, a cylinder seat 6 for a flanging mechanism 3 is mounted on the bottom surface of the bottom beam via a mounting plate. A flanging cylinder 5 is hinged to the cylinder seat 6, and a tilting plate is hinged to the bottom beam. A cylinder head seat is connected to the tilting plate, and the cylinder head seat and tilting plate together form an L-shaped structure. The cylinder head of the flanging cylinder 5 is hinged to the cylinder head seat. The flanging cylinder 5 is connected to a second hydraulic circuit control system, which is electrically connected to a PLC controller.

[0023] To facilitate precise positioning at the bend, a first positioning mechanism and a second positioning mechanism are installed on the frame 1. Both mechanisms consist of positioning blocks driven by positioning cylinders. After the first positioning block is pushed out by the first positioning cylinder of the first positioning mechanism, the head of the door panel 7 abuts against the first positioning block, and the flip plate aligns with the first folding position of the door panel 7. Similarly, after the second positioning block is pushed out by the second positioning cylinder of the second positioning mechanism, the flip plate aligns with the second folding position of the door panel 7 when the head of the door panel 7 abuts against the second positioning block. A first photoelectric sensor and a second photoelectric sensor are also installed at the first and second positioning blocks. The first positioning cylinder is connected to a second air circuit control system, and the second positioning cylinder is connected to a third air circuit control system. Both the second and third air circuit control systems are connected to an air source and are electrically connected to a PLC controller. The PLC controller is also electrically connected to an action button, a buzzer, and an emergency stop button. The first and second photoelectric sensors are also electrically connected to the PLC controller.

[0024] like Figure 8 As shown, in order to facilitate material loading, a feeding table 8 is provided at the feeding port of the door panel end bending machine. In order to reduce the friction between the door panel 7 and the feeding table 8 and prevent wear on the surface of the door panel 7, universal balls 801 are arrayed on the feeding table 8. There is a third photoelectric sensor on the feeding table 8, which is electrically connected to the PLC controller.

[0025] The working principle of this utility model:

[0026] After the power is turned on, the staff sets the parameters according to the processing technology of the door panel 7 on the host computer, places the door panel 7 to be folded on the feeding table 8, and sends the door panel 7 into the door panel end bending machine. The universal ball 801 can prevent the surface of the door panel 7 from being scratched. After the PLC controller detects the signal of the door panel 7 through the third photoelectric sensor, it controls the first positioning cylinder to push out the first positioning block. When the head of the door panel 7 abuts against the first positioning block, the operator presses the action button. The PLC controller verifies that the door panel 7 has reached the first folding position through the first photoelectric sensor, and then controls the second folding cylinder 404 to extend through the first air circuit control system. The second folding cylinder 404 pushes out the second folding slider 402, and the extension knife 4022 is level with the pressing knife 4012. The PLC controller causes the hydraulic cylinder to move through the first hydraulic oil circuit control system. The pressing knife 4012 and the extension knife 4022 of the second folding pressing mechanism 4 press against the top surface of the door panel 7. Then, the PLC controller drives the second hydraulic oil circuit control system to move the flanging cylinder 5. The flanging cylinder 5 drives the flipping plate to flip, and performs a series of bends on the end profile of the door panel. After bending, the flanging cylinder 5 resets, the flipping plate resets, the hydraulic positioning mechanism 2 resets, the first positioning block resets, and the second positioning cylinder pushes out the second positioning block.

[0027] The staff pushes the door panel 7 so that it abuts against the second positioning block. Then, they press the action button. The PLC controller verifies that the door panel 7 has reached the second folding position through the second photoelectric sensor. The PLC controller then activates the hydraulic cylinder through the first hydraulic circuit control system. The pressing blade 4012 and the extension blade 4022 of the second folding mechanism 4 press against the top surface of the door panel 7. Then, the PLC controller drives the second hydraulic circuit control system to activate the flanging cylinder 5. The flanging cylinder 5 drives the flipping plate to flip, performing a second bending on the end profile of the door panel. After bending, the flanging cylinder 5 resets, the flipping plate resets, the second folding slider 402 resets, the hydraulic positioning mechanism 2 resets, the second positioning block resets, and the door panel 7 is discharged.

[0028] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0029] Components not described in detail in this article are existing technologies.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A door panel end bending machine, comprising a frame (1), wherein the frame (1) has a hydraulic positioning mechanism (2) and a flanging mechanism (3), wherein the hydraulic positioning mechanism (2) and the flanging mechanism (3) are respectively corresponding to the processing position on the frame (1) and matched in size, and further comprising a controller, wherein the controller is electrically connected to the hydraulic positioning mechanism (2) and the flanging mechanism (3), characterized in that: The hydraulic positioning mechanism (2) includes a two-fold pressing mechanism (4), which includes a two-fold pressing block (401). The two-fold pressing block (401) has an inner cavity surface (4011) and a pressing knife (4012). The two-fold pressing block (401) is equipped with a telescopic mechanism, which is connected to a two-fold slider (402). The two-fold slider (402) has an extension knife (4022). The telescopic mechanism can control the two-fold slider (402) to extend so that the extension knife (4022) is flush with the pressing knife (4012).

2. The door panel end bending machine according to claim 1, characterized in that: The telescopic mechanism includes a fixed block (403) mounted on the two-fold pressure block (401). The fixed block (403) is equipped with a telescopic cylinder (404). The fixed block (403) has a sliding groove (4032). The two-fold slider (402) is connected to a guide block (4021). The guide block (4021) is slidably connected in the sliding groove (4032). The telescopic end of the two-fold cylinder (404) is connected to the guide block (4021). The two-fold cylinder (404) is connected to a first air circuit control system. The first air circuit control system is connected to an air source and is electrically connected to the controller.

3. The door panel end bending machine according to claim 2, characterized in that: The fixed block (403) has an oil injection nozzle (4031), which is connected to the slide groove (4032).

4. The door panel end bending machine according to claim 1, characterized in that: The hydraulic positioning mechanism (2) includes a hydraulic cylinder. The fixed end of the hydraulic cylinder is mounted on the frame (1), and the telescopic end is connected to the upper tool holder. The upper tool holder is connected to the double-folding pressing mechanism (4). The hydraulic cylinder is connected to a first hydraulic oil circuit control system, which is electrically connected to the controller.

5. The door panel end bending machine according to claim 1, characterized in that: The flanging mechanism (3) includes a flipping plate, which is hinged to the frame (1) and a cylinder head seat is mounted on the flipping plate. The frame (1) is also equipped with a cylinder seat (6), and a flanging cylinder (5) is hinged to the cylinder seat (6). The telescopic end of the flanging cylinder (5) is hinged to the cylinder head seat. The flanging cylinder (5) is connected to a second hydraulic circuit control system, which is electrically connected to the controller.

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