bending machine

Abstract

This utility model discloses a bending machine, relating to the field of plastic sheet bending technology. The bending machine includes a frame, an upper roller, and a lower roller. The frame is provided with a material placement platform for placing the target part. The upper roller is rotatably mounted on the frame and has an upper pressure roller and at least two upper bending rollers. The upper pressure roller is located between the two upper bending rollers, and the outer periphery of the upper bending roller is provided with cutting teeth. The lower roller is rotatably mounted on the frame and has a lower pressure roller and at least two lower bending rollers. The lower pressure roller is located between the two lower bending rollers and is positioned close to the upper pressure roller, pressing against the upper and lower sides of the target part respectively. The upper and lower bending rollers are sandwiched between opposite sides of the target part. The outer periphery of the lower bending roller is provided with a pressing groove. The lower and upper bending rollers are positioned opposite each other, and at least a portion of the cutting teeth extends into the pressing groove to press creases into the target part. The technical solution provided by this utility model solves the problem that existing bending machines cannot adapt to various different bending widths.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a bending machine. Background Technology

[0002] In the modern electronics industry, power supplies are a core component, and their protection during production, transportation, and warehousing is crucial. To ensure that power supply products are protected from damage caused by environmental factors such as static electricity, physical impacts, and moisture during logistics, they are usually encapsulated using specialized packaging materials. In actual packaging operations, flat packaging materials are typically processed into protective structures with specific shapes and sizes through bending processes. For example, it may be necessary to bend both sides of the packaging material to wrap power supplies of different sizes.

[0003] The market offers a wide variety of power supply products, differing in size, shape, and power, resulting in diverse requirements for the bending width of packaging panels. However, existing bending machines typically employ fixed mechanical structures; for example, the width and position of the bending dies, as well as the pressing stroke, are often preset and fixed. When processing packaging panels with varying bending widths, users must perform a series of cumbersome adjustments, impacting production efficiency. Utility Model Content

[0004] The main purpose of this invention is to propose a bending machine that solves the problem that existing bending machines cannot adapt to various different bending widths.

[0005] To achieve the above objectives, the present invention provides a bending machine, which includes:

[0006] The frame is equipped with a material placement platform for placing the target parts;

[0007] An upper rotating roller is rotatably mounted on the frame. The upper rotating roller is equipped with an upper pressure roller and at least two upper bending rollers. The upper pressure roller is positioned between the two upper bending rollers, and the outer periphery of each upper bending roller is provided with cutting teeth.

[0008] A lower rotating roller is rotatably mounted on the frame. The lower rotating roller is equipped with a lower pressure roller and at least two lower bending rollers. The lower pressure roller is located between the two lower bending rollers and is positioned close to the upper pressure roller, pressing against the upper and lower sides of the target part respectively. The upper bending roller and the lower bending roller are used to clamp the opposite sides of the target part. The outer periphery of the lower bending roller is provided with a pressing groove. The lower bending roller and the upper bending roller are arranged opposite each other, and at least a portion of the cutting teeth extends into the pressing groove to press creases into the target part.

[0009] The upper bending wheel is movably arranged in the axial direction of the upper rotating roller, and the lower bending wheel is movably arranged in the axial direction of the lower rotating roller, so as to change the position of the crease on the target part and adjust the width of the folded edge on the target part.

[0010] In one embodiment, the groove wall and / or the outer wall of the upper pressure roller and / or the outer wall of the lower pressure roller are all provided with flexible rubber coating.

[0011] In one embodiment, the bending machine further includes a positioning component, which includes at least two spaced-apart limiting plates, at least one of which is slidably disposed on the material placement table to adjust the interval between the two limiting plates.

[0012] In one embodiment, the positioning component further includes a guide block disposed on one side of the two limiting plates facing each other and close to the upper roller.

[0013] In one embodiment, the material placement platform is provided with a slide groove, and the bending machine further includes a first driving mechanism. The first driving mechanism is located on the lower side of the material placement platform and is drivenly connected to any one of the limiting plates to drive the limiting plate to slide in the slide groove.

[0014] In one embodiment, the first driving mechanism includes a lead screw and a slider threadedly connected to the lead screw. The slider and the limiting plate are respectively disposed on both sides of the material placement platform and are fixedly connected by the slide groove.

[0015] In one embodiment, the first drive mechanism further includes a rocker arm, which is disposed at one end of the lead screw and fixedly connected to the lead screw.

[0016] In one embodiment, the bending machine further includes a front pressure roller, which is rotatably disposed between the upper rotating roller and the material placement table. Two front pressure rollers are spaced apart in the vertical direction, and the two front pressure rollers are connected by gear meshing. The front pressure roller is provided with a pressure cylinder that rotates with the front pressure roller, and the target part is sandwiched between the two pressure cylinders.

[0017] In one embodiment, the bending machine further includes a rear pressure roller, which is rotatably disposed on the side of the lower roller away from the front pressure roller, and at least two clamping wheels are spaced apart on the rear pressure roller, the two clamping wheels being used to clamp the bent target part.

[0018] In one embodiment, the bending machine further includes a second drive mechanism located below the frame. The output end of the second drive mechanism is connected to one end of any one of the front pressure rollers via a synchronous belt drive, and any one of the front pressure rollers is connected to the upper rotating roller or the lower rotating roller via a synchronous belt drive.

[0019] The technical solution of this utility model features an upper pressure roller and at least two upper bending rollers on an upper rotating roller, and a lower pressure roller and at least two lower bending rollers on a lower rotating roller. The upper and lower bending rollers are respectively clamped on opposite sides of the target part. The cutting teeth of the upper bending rollers engage with the pressure grooves of the lower bending rollers, allowing the cutting teeth to press clear, consistent creases into the surface of the target part, thus bending the target part along these creases. Furthermore, both the upper bending rollers and the lower bending rollers are adjustable axially along the upper and lower rotating rollers. By changing the position of the creases on the target part, the folded edge width can be directly adjusted without changing the mold or adjusting the overall machine structure, quickly adapting to the processing needs of target parts with different specifications (such as large differences in folded edge width). Simultaneously, the upper and lower pressure rollers press the upper and lower sides of the target part in real time during the bending process, effectively suppressing wrinkling and deformation caused by uneven force on the material, and improving the accuracy of the crease position. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the bending machine provided by this utility model;

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 A partial structural schematic diagram of the upper and lower rollers in another embodiment of the bending machine provided by this utility model;

[0024] Figure 4 A top view of another embodiment of the bending machine provided by this utility model;

[0025] Figure 5 A lower view of another embodiment of the bending machine provided by this utility model;

[0026] Figure 6 This is a side view of another embodiment of the bending machine provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Bending machine; 1. Frame; 11. Feeding platform; 111. Slide groove; 2. Upper rotating roller; 21. Upper pressure roller; 22. Upper bending roller; 221. Cutting tooth; 3. Lower rotating roller; 31. Lower pressure roller; 32. Lower bending roller; 321. Press groove; 4. Positioning assembly; 41. Limiting plate; 42. Guide block; 5. First drive mechanism; 51. Lead screw; 52. Slider; 53. Handle; 6. Front pressure roller; 61. Pressure cylinder; 7. Rear pressure roller; 71. Clamping wheel; 8. Second drive mechanism; 9. Unloading plate.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] 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 scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] The market offers a wide variety of power supply products, differing in size, shape, and power, resulting in diverse requirements for the bending width of packaging panels. However, existing bending machines typically employ fixed mechanical structures; for example, the width and position of the bending dies, as well as the pressing stroke, are often preset and fixed. When processing packaging panels with varying bending widths, users must perform a series of cumbersome adjustments, impacting production efficiency.

[0034] This utility model proposes a bending machine.

[0035] Please see Figure 1 , Figure 3 and Figure 4 In one embodiment of this utility model, the bending machine 100 includes:

[0036] The frame 1 is equipped with a material placement platform 11 for placing the target part;

[0037] The upper rotating roller 2 is rotatably mounted on the frame 1. The upper rotating roller 2 is equipped with an upper pressure roller 21 and at least two upper bending rollers 22. The upper pressure roller 21 is positioned between the two upper bending rollers 22. The outer periphery of each upper bending roller 22 is provided with cutting teeth 221.

[0038] The lower roller 3 is rotatably mounted on the frame 1. The lower roller 3 is provided with a lower pressure roller 31 and at least two lower bending rollers 32. The lower pressure roller 31 is located between the two lower bending rollers 32. The lower pressure roller 31 is located close to the upper pressure roller 21 and presses against the upper and lower sides of the target part respectively. The upper bending roller 22 and the lower bending roller 32 are used to clamp the opposite sides of the target part. The outer periphery of the lower bending roller 32 is provided with a pressing groove 321. The lower bending roller 32 and the upper bending roller 22 are arranged opposite each other, and at least part of the cutting teeth 221 extends into the pressing groove 321 to press out creases on the target part.

[0039] The upper bending wheel 22 is movably mounted on the axial direction of the upper rotating roller 2, and the lower bending wheel 32 is movably mounted on the axial direction of the lower rotating roller 3, so as to change the position of the crease on the target part and adjust the width of the folded edge on the target part.

[0040] The technical solution of this utility model is provided with an upper pressure roller 21 and at least two upper bending rollers 22 on the upper rotating roller 2, and a lower pressure roller 31 and at least two lower bending rollers 32 on the lower rotating roller 3. The upper bending rollers 22 and lower bending rollers 32 are respectively clamped on opposite sides of the target part. The cutting teeth 221 of the upper bending roller 22 are directly engaged with the pressing grooves 321 of the lower bending roller 32. The cutting teeth 221 extend into the pressing grooves 321 to press clear and consistent creases on the surface of the target part, so that the target part is bent according to the creases. Furthermore, the upper bending roller 22 is movable and adjustable in the axial direction of the upper rotating roller 2, and the lower bending roller 32 is movable and adjustable in the axial direction of the lower rotating roller 3. By changing the position of the crease on the target part, the folding width can be directly adjusted without changing the mold or adjusting the overall machine structure, so as to quickly adapt to the processing needs of target parts of different specifications (such as large differences in folding width). Meanwhile, the upper pressure roller 21 and the lower pressure roller 31 press the upper and lower sides of the target part in real time during the bending process, effectively suppressing problems such as wrinkling and deformation caused by uneven force on the material, and improving the accuracy of the crease position.

[0041] Specifically, the bending machine 100 integrates bending rollers and pressure rollers on the upper roller 2 and lower roller 3, allowing bending and pressing actions to be completed simultaneously without separate steps, thus simplifying the processing flow. The frame 1 can be constructed by welding steel plates into a frame. Optionally, reinforcing ribs can be added to the frame to improve its support strength. The upper roller 2 and lower roller 3 are mounted on the upright plates on both sides of the frame 1 via bearing seats. The upright plates have elongated holes, and the bearing seats are connected to these holes with bolts. The upper pressure roller 21 and lower pressure roller 31 can be cylindrical rollers, and at least two are provided for each. The two upper pressure rollers 21 are movably positioned between the two upper bending rollers 22, and the two lower pressure rollers 31 are movably positioned between the lower bending rollers 32. For example, the upper pressure rollers 21 and lower pressure rollers 31 can be divided into two semi-circular structures, fastened to the outer circumference of the upper roller 2 and lower roller 3 by bolts or clips. It should be noted that the outer periphery of the upper bending roller 22 is provided with a mounting groove, and the cutting teeth 221 are detachably fixed in the mounting groove by bolts. When machining target parts of different thicknesses, cutting teeth 221 with different tip heights can be replaced. The cutting teeth 221 can be ring-shaped cutting teeth 221 made of cemented carbide. The outer periphery of the lower bending roller 32 can be provided with an arc-shaped pressure groove 321, and the cross-section of the pressure groove 321 is "U". It is worth mentioning that the ends of the upper roller 2 and the lower roller 3 can be connected by gear meshing to achieve synchronous rotation.

[0042] The specific working process of the bending machine 100 in this scheme is as follows: the target part is placed flat on the material placement table 11 of the frame 1 and adjusted to the initial processing position so that the bending area of ​​the target part is located between the upper roller 2 and the lower roller 3; an external driving device is used to drive the upper roller 2 to move downward (or the lower roller 3 to move upward, or both to move towards each other), so that the upper pressure roller 21 and the lower pressure roller 31 press against the upper and lower surfaces of the target part respectively, and fix the target part by the friction between the pressure roller and the target part to prevent the material from shifting during the subsequent bending process. Start another drive device to drive the upper roller 2 and the lower roller 3 to rotate synchronously; during the rotation, the blade 221 of the upper bending wheel 22 gradually approaches the upper surface of the target part, while the pressure groove 321 of the lower bending wheel 32 is directly opposite the position of the blade 221; when the blade 221 and the pressure groove 321 clamp the target part, the tip of the blade 221 is embedded in the upper surface of the target part, and the bottom of the pressure groove 321 supports the lower surface of the target part. The two work together to press out a straight crease extending along the length direction on the target part. When processing target parts with different fold widths, loosen the locking mechanism (such as the set screw) of the upper bending wheel 22 in the axial direction of the upper rotating roller 2, slide the upper bending wheel 22 axially to the target position (such as moving it a certain distance to the left or right), and simultaneously adjust the position of the lower bending wheel 32 in the axial direction of the lower rotating roller 3 to ensure that the upper bending wheel 22 and the lower bending wheel 32 are still aligned (the axes of the cutter teeth 221 and the pressure groove 321 coincide); after adjustment, lock it, and the distance between the crease and the edge of the target part can be changed to achieve precise adjustment of the fold width.

[0043] In embodiments of this invention, the groove wall of the pressure groove 321 and / or the outer wall of the upper pressure roller 21 and / or the outer wall of the lower pressure roller 31 are all provided with flexible rubber coating. The flexible rubber coating can be made of materials such as polyurethane elastomer, nitrile rubber, or silicone. After the groove wall of the pressure groove 321 is covered with flexible rubber coating, its elasticity can buffer the rigid contact between the blade teeth 221 and the pressure groove 321, preventing the blade teeth 221 from directly impacting the metal groove wall and causing chipping or wear of the pressure groove 321. It can also prevent the target part from directly and rigidly contacting the blade teeth 221. The outer peripheral walls of the upper pressure roller 21 and the lower pressure roller 31 can be completely covered with flexible rubber coating, thereby evenly distributing the clamping force and preventing the rigid rollers from directly damaging the surface of the target part, especially for relatively brittle materials such as plastic sheets.

[0044] In the embodiments of this utility model, please refer to Figure 1 and Figure 2The bending machine 100 also includes a positioning assembly 4, which includes at least two spaced-apart limiting plates 41. At least one of the limiting plates 41 is slidably disposed on the loading table 11 to adjust the spacing between the two limiting plates 41. The limiting plates 41 can be rectangular blocks, L-shaped structures, etc. One of the two limiting plates 41 can be slidably disposed, or both can be slidably disposed. The two limiting plates 41 are respectively clamped on opposite sides of the target part. In this way, the position of the limiting plates 41 can be moved according to the actual width of the target part, ensuring that the target part can be conveyed from the loading table 11 to the upper roller 2 and the lower roller 3 without deviation. Optionally, a guide protrusion can be provided at the bottom of the limiting plate 41, and a T-slot or other shaped groove can be provided on the loading table 11 to achieve sliding engagement between the limiting plate 41 and the loading table 11.

[0045] In the embodiments of this utility model, please refer to Figure 2 The positioning component 4 also includes a guide block 42, which is located on one side of the two limiting plates 41 facing each other and close to the upper roller 2. The guide block 42 can be fixed to the limiting plates 41 by bolts or other types of fasteners. The side of the guide block 42 that contacts the target part can be arc-shaped or wedge-shaped and located close to the upper roller 2 (i.e., the inlet end of the target part's feed direction). The arc shape can better fit the edge of the target part. When the target part is fed, the front end first contacts the arc-shaped or wedge-shaped surface of the guide block 42, and under its guidance, gradually moves between the upper roller 2 and the lower roller 3 to complete the lateral positioning.

[0046] In the embodiments of this utility model, please refer to Figure 1 and Figure 5 The material placement table 11 is provided with a slide groove 111. The bending machine 100 also includes a first drive mechanism 5, which is located on the lower side of the material placement table 11 and is drivenly connected to any one of the limiting plates 41 to drive the limiting plate 41 to slide within the slide groove 111. Two slide grooves 111 can be provided in parallel for the two limiting plates 41 to slide separately; alternatively, only one slide groove 111 can be provided for one limiting plate 41 to slide. Optionally, a lubricating guide rail can also be provided within the slide groove 111 to allow the limiting plate 41 to slide smoothly within the slide groove 111. In this embodiment, the type of the first drive mechanism 5 is not specifically limited; it can be a combination of a servo motor, a nut, and a ball screw, etc.

[0047] In the embodiments of this utility model, please refer to Figure 5The first driving mechanism 5 includes a lead screw 51 and a slider 52 threadedly connected to the lead screw 51. The slider 52 and the limiting plate 41 are respectively disposed on both sides of the material placement platform 11 and are fixedly connected by a slide groove 111. In this embodiment, the slider 52 is threadedly connected to the lead screw 51. A guide rod penetrating the slider 52 can also be provided on one side of the lead screw 51. The rotation of the lead screw 51 can drive the slider 52 to move in a preset direction. The lead screw 51 and the slider 52 are disposed on the lower side of the material placement platform 11, and the limiting plate 41 is disposed on the upper side of the material placement platform 11. Bolts and other fasteners penetrate the slide groove 111 to fix the slider 52 and the limiting plate 41, so that the limiting plate 41 can move synchronously with the slider 52.

[0048] In the embodiments of this utility model, please refer to Figure 1 and Figure 5 The first drive mechanism 5 also includes a crank handle 53, which is located at one end of the lead screw 51 and is fixedly connected to the lead screw 51. To facilitate the rotation of the lead screw 51, a crank handle 53 can also be provided on one side of the frame 1. The crank handle 53 can include a throttle and a handle body. The throttle is fixedly connected to the handle body, and the handle body is fixed to the end of the lead screw 51 by a pin. In this way, the user can drive the lead screw 51 to rotate in the forward or reverse direction by holding the throttle, thereby driving the movement of the limiting plate 41.

[0049] In the embodiments of this utility model, please refer to Figure 1 and Figure 4 The bending machine 100 also includes a front pressure roller 6, which is rotatably positioned between the upper rotating roller 2 and the feeding table 11. Two front pressure rollers 6 are spaced apart in the vertical direction and are connected by gear meshing. Each front pressure roller 6 has a pressure cylinder 61 that rotates with it, and the target part is sandwiched between the two pressure cylinders 61. The two front pressure rollers 6 are positioned adjacent to the feeding table 11 and located at the path of the target part. Each front pressure roller 6 includes bearings fixed to the left and right side plates of the frame 1 and pressure cylinders 61 connected to the bearings at both ends. To further adjust the degree of mutual compression between the two front pressure rollers 6, the upper front pressure roller 6 also includes an adjusting rod movably connected to the bearing. The adjusting rod can be a screw, connected to the bearing by a screw connection. Tightening the left and right adjusting rods moves the pressure cylinder 61 on the upper front pressure roller 6 downwards by a certain distance. The user can adjust the distance between the two front pressure rollers 6 according to the actual thickness of the plastic sheet.

[0050] In the embodiments of this utility model, please refer to Figure 4 and Figure 6The bending machine 100 also includes a rear pressure roller 7, which is rotatably located on the side of the lower rotating roller 3 away from the front pressure roller 6. At least two clamping wheels 71 are spaced apart on the rear pressure roller 7, used to clamp the bent target part. The rear pressure roller 7 can be independently installed on the frame 1 without interfering with the rotation of the original front pressure roller 6, upper rotating roller 2, and lower rotating roller 3. Both ends of the rear pressure roller 7 can be fixed to the frame 1 by deep groove ball bearings. Steel sleeves can be embedded in the inner holes of the clamping wheels 71 and connected to the rear pressure roller 7 by flat keys to ensure synchronous rotation. Optionally, the outer circumference of the clamping wheels 71 can be provided with annular anti-slip textures to enhance friction against the target part.

[0051] In another embodiment, a discharge plate 9 can be provided below the rear pressure roller 7. In this way, the bent target part can be clamped and fixed by two clamping wheels 71, and then fall onto the discharge plate 9 below. By tilting the discharge plate 9, the target part can automatically slide down under its own weight, without the need for additional power or manual handling, thus reducing labor intensity.

[0052] In the embodiments of this utility model, please refer to Figure 5 and Figure 6 The bending machine 100 also includes a second drive mechanism 8 located below the frame 1. The output end of the second drive mechanism 8 is connected to one end of any one of the front pressure rollers 6 via a synchronous belt drive, and any one of the front pressure rollers 6 is connected to the upper rotating roller 2 or the lower rotating roller 3 via a synchronous belt drive. Specifically, the second drive mechanism 8 can be a servo motor, whose output end is connected to the lower front pressure roller 6 for drive. The lower front pressure roller 6 is driven to rotate by the second drive mechanism 8, and the ends of the two front pressure rollers 6 near the second drive mechanism 8 are connected via a synchronous belt drive, while the other ends are connected via gear meshing, thus achieving synchronous rotation of the two front pressure rollers 6. In addition, the upper front pressure roller 6 is also connected to the upper rotating roller 2 via a synchronous belt drive. The rotation of the upper front pressure roller 6 will drive the upper rotating roller 2 to rotate, and the other ends of the upper rotating roller 2 and the lower rotating roller 3 are connected via gear meshing, so that the upper rotating roller 2 and the lower rotating roller 3 can also achieve synchronous rotation. By adding a second drive mechanism 8 and a synchronous belt transmission system, precise synchronous driving of the front pressure roller 6 and the rotating roller is achieved, and the cost of using the drive motor is also reduced.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A bending machine, characterized in that, The bending machine includes: The frame is equipped with a material placement platform for placing the target parts; An upper rotating roller is rotatably mounted on the frame. The upper rotating roller is equipped with an upper pressure roller and at least two upper bending rollers. The upper pressure roller is positioned between the two upper bending rollers, and the outer periphery of each upper bending roller is provided with cutting teeth. A lower rotating roller is rotatably mounted on the frame. The lower rotating roller is equipped with a lower pressure roller and at least two lower bending rollers. The lower pressure roller is located between the two lower bending rollers and is positioned close to the upper pressure roller, pressing against the upper and lower sides of the target part respectively. The upper bending roller and the lower bending roller are used to clamp the opposite sides of the target part. The outer periphery of the lower bending roller is provided with a pressing groove. The lower bending roller and the upper bending roller are arranged opposite each other, and at least a portion of the cutting teeth extends into the pressing groove to press creases into the target part. The upper bending wheel is movably arranged in the axial direction of the upper rotating roller, and the lower bending wheel is movably arranged in the axial direction of the lower rotating roller, so as to change the position of the crease on the target part and adjust the width of the folded edge on the target part.

2. The bending machine as described in claim 1, characterized in that, The groove wall and / or the outer wall of the upper pressure roller and / or the outer wall of the lower pressure roller are all provided with flexible rubber coating.

3. The bending machine as described in claim 1, characterized in that, The bending machine also includes a positioning component, which includes at least two spaced-apart limiting plates. At least one of the two limiting plates is slidably disposed on the material placement table to adjust the interval between the two limiting plates.

4. The bending machine as described in claim 3, characterized in that, The positioning component also includes a guide block, which is located on one side of the two limiting plates facing each other and close to the upper rotating roller.

5. The bending machine as described in claim 4, characterized in that, The material placement platform is provided with a sliding groove, and the bending machine also includes a first driving mechanism. The first driving mechanism is located on the lower side of the material placement platform and is driven to connect with any one of the limiting plates to drive the limiting plate to slide in the sliding groove.

6. The bending machine as described in claim 5, characterized in that, The first driving mechanism includes a lead screw and a slider threadedly connected to the lead screw. The slider and the limiting plate are respectively disposed on both sides of the material placement platform and are fixedly connected by the slide groove.

7. The bending machine as described in claim 6, characterized in that, The first drive mechanism further includes a rocker arm, which is located at one end of the lead screw and is fixedly connected to the lead screw.

8. The bending machine as described in claim 1, characterized in that, The bending machine also includes a front pressure roller, which is rotatably disposed between the upper rotating roller and the material placement table. Two front pressure rollers are spaced apart in the vertical direction, and the two front pressure rollers are connected by gear meshing. The front pressure roller is provided with a pressure cylinder that rotates with the front pressure roller, and the target part is sandwiched between the two pressure cylinders.

9. The bending machine as described in claim 8, characterized in that, The bending machine also includes a rear pressure roller, which is rotatably located on the side of the lower roller away from the front pressure roller, and at least two clamping wheels are spaced apart on the rear pressure roller, the two clamping wheels being used to clamp the bent target part.

10. The bending machine as described in claim 9, characterized in that, The bending machine further includes a second drive mechanism located below the frame. The output end of the second drive mechanism is connected to one end of any one of the front pressure rollers via a synchronous belt drive, and any one of the front pressure rollers is connected to the upper roller or the lower roller via a synchronous belt drive.

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