Angle adjustable bending mechanism

Abstract

The utility model discloses an angle-adjustable bending mechanism, including a frame and a bottom plate, and also including: a first adjustment plate; a second adjustment plate; two displacement components, each of which has a strip hole on the left and right sides of the displacement component, one displacement component is mounted on the first adjustment plate, two locking members are arranged in the strip holes on the left and right sides of the displacement component and can lock and fix the displacement component; another displacement component is mounted on the second adjustment plate, two locking members are arranged in the strip holes on the left and right sides of the displacement component and can lock and fix the displacement component; two angle adjustment components are fixedly connected to the second adjustment plate on the corresponding side after a rotating shaft passes through the first adjustment plate on the corresponding side. In this solution, after the locking members are fixed on the first adjustment plate and the second adjustment plate, the displacement components can also be fine-tuned, the bending accuracy is higher during product molding, and the product molding stability is good.

Description

Technical Field

[0001] The utility model relates to the field of plastic bending, in particular to an angle-adjustable bending mechanism. Background Art

[0002] Bending is a stamping process that uses pressure to force the material to produce plastic deformation, thereby forming a shape with a certain angle and curvature. It usually works by applying pressure or force to the material to deform it in a specific way. A bending machine is a machine that can bend thin plates. Its structure mainly includes a bracket, a workbench and a clamping plate. The workbench is placed on the bracket. The workbench consists of a base and a pressing plate. The base is connected to the clamping plate by a hinge. The base consists of a seat shell, a coil and a cover plate. The coil is placed in the depression of the seat shell, and the top of the depression is covered with a cover plate. When in use, the coil is energized by a wire, and after energization, an attractive force is generated on the pressing plate, thereby clamping the thin plate between the pressing plate and the base. Due to the use of electromagnetic force clamping, the pressing plate can be made into a variety of workpiece requirements, and can process workpieces with side walls, and the operation is also very simple.

[0003] Plastic plates are plates made of plastic, and plastic pipes are pipe fittings made of plastic. Plastics are synthetic polymer compounds that can change their shapes and styles freely. Plastics are materials that are polymerized by synthesis or condensation reaction of monomer raw materials, and are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. In the bending process of plastic products, it is usually necessary to heat the plastic products to a certain temperature to soften them, and then use molds or bending machines to bend them. The patent application with publication number CN220995418U discloses a crack-proof plastic plate bending device, which drives the first flap and the second flap to rotate through a driving component, thereby changing the angle between the first flap and the second flap, placing the plastic plate to be bent on the opening of the first flap and the second flap, and the lower pressure head moves downward and presses down the plastic plate until the plastic plate is bent and formed. However, the existing bending device has the following problems: 1. It is impossible to achieve high-precision bending and forming of products, and the error in the forming process is relatively large; 2. The stability is not high during batch bending and forming, and the forming differences of products in the same batch are large. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide an angle-adjustable bending mechanism, which has high bending forming accuracy and high bending forming stability.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] An angle-adjustable bending mechanism comprises a frame and a bottom plate arranged on the frame, and further comprises:

[0007] A first adjustment plate, which is fixedly mounted on the bottom plate;

[0008] A second adjusting plate, the lower end of which is rotatably connected to the rear end of the first adjusting plate;

[0009] Two displacement components, each having a strip hole on its left and right sides, one displacement component is mounted on a first adjustment plate and can move forward and backward along the first adjustment plate, two locking members are arranged in the strip holes on the left and right sides of the displacement component and can lock and fix the displacement component and the first adjustment plate; the other displacement component is mounted on a second adjustment plate and can move up and down along the second adjustment plate, two locking members are arranged in the strip holes on the left and right sides of the displacement component and can lock and fix the displacement component and the second adjustment plate;

[0010] Two angle adjustment components are installed on the frame and are respectively located on the left and right sides of the second adjustment plate. The angle adjustment components are fixedly connected to the second adjustment plate on the corresponding side after passing through the first adjustment plate on the corresponding side through the rotating shaft.

[0011] When bending a plastic part, first adjust the position of the displacement assembly on the first adjustment plate and the position of the displacement assembly on the second adjustment plate according to the width of the plastic part. Since strip holes are provided on the left and right sides of the displacement assembly, the utility model can fine-tune the displacement assembly after fixing the locking member on the first adjustment plate and fixing the locking member on the second adjustment plate, and then lock the displacement assembly with the corresponding first adjustment plate and second adjustment plate through the locking member. Finally, adjust the second adjustment plate according to the bending angle of the plastic part and fix the angle through the angle adjustment assembly. Heat the plastic part to the required bending temperature, and place the heated plastic part into the mechanism for molding, thereby achieving high-precision bending of the plastic part and good molding stability of the same batch of products.

[0012] Preferably, a first guide rail is respectively provided on the left and right sides of the first adjustment plate, and a plurality of first gear holes are provided on the side wall of the first guide rail. The rod portion of the corresponding locking member passes through the bar hole of the corresponding displacement assembly and is inserted into the first gear hole of the first adjustment plate, and the head end of the corresponding locking member abuts against the corresponding displacement assembly; a second guide rail is respectively provided on the left and right sides of the second adjustment plate, and a plurality of second gear holes are provided on the side wall of the second guide rail. The rod portion of the corresponding locking member passes through the bar hole of the corresponding displacement assembly and is inserted into the second gear hole of the second adjustment plate, and the head end of the corresponding locking member abuts against the corresponding displacement assembly.

[0013] Preferably, a first rotating hole is formed at the rear end of the first guide rail, a first limiting hole is formed at the lower end of the second guide rail, and a first limiting portion adapted to the first limiting hole is provided at one end of the rotating shaft close to the first adjusting plate. The first guide rail is rotatably mounted on the rotating shaft through the first rotating hole, and the second guide rail is fixedly mounted on the rotating shaft through the cooperation between the first limiting hole and the first limiting portion.

[0014] Preferably, the displacement assembly includes a guide plate and a support plate, the support plate is fixedly mounted on the guide plate, and the strip holes are opened on the left and right sides of the guide plate; one displacement assembly is mounted on the first adjustment plate through the guide plate, and the left and right sides of the guide plate are respectively clamped on the first adjustment plate so that it can move forward and backward along the first adjustment plate; the other displacement assembly is mounted on the second adjustment plate through the guide plate, and the left and right sides of the guide plate are respectively clamped on the second adjustment plate so that it can move up and down along the second adjustment plate; the support plates on the two displacement assemblies are arranged facing each other.

[0015] Preferably, at least one displacement assembly is provided with a fine-tuning assembly, the fine-tuning assembly comprising a micrometer slide and a connecting piece installed on the micrometer slide, the connecting piece being fixedly connected to the displacement assembly; when the displacement assembly arranged on the first adjustment plate is provided with a fine-tuning assembly, the micrometer slide is fixedly installed at the front end of the first adjustment plate; when the displacement assembly arranged on the second adjustment plate is provided with a fine-tuning assembly, the micrometer slide is fixedly installed at the upper end of the second adjustment plate.

[0016] Preferably, it also includes two linear guides vertically installed on the left and right sides of the frame respectively, and the linear guides correspond to the angle adjustment components one by one; the angle adjustment component includes a rotating shaft, a gear and a rack, and a second limiting portion is provided at the end of the rotating shaft away from the first adjustment plate, and a second limiting hole matched with the second limiting portion is opened on the gear, and the gear is fixedly installed on the rotating shaft through the cooperation between the second limiting hole and the second limiting portion; the rack and the gear are meshed, and a slider matched with the linear guide is provided on the rack, and the rack can be installed on the linear guide so as to be movable up and down through the slider, and the upper and lower ends of the rack can be fixed to the linear guide through positioning rods.

[0017] Preferably, it also includes a support plate, which is fixedly connected to the second adjustment plate, and the left and right sides of the support plate are respectively rotatably connected to the rotating shaft on the corresponding sides; a support block is provided on the frame, and a second rotating hole is provided in the support block, and the rotating shaft is rotatably supported in the second rotating hole of the support block.

[0018] Preferably, a plurality of support rods are vertically provided at the rear end of the frame, and a buffer pad is provided at the upper end of the support rod. When the second adjustment plate is rotated to an angle of 180° with the first adjustment plate, the second adjustment plate abuts against the buffer pad.

[0019] Preferably, it further comprises an inclinometer, which is mounted on the second adjustment plate.

[0020] Preferably, at least one base plate is provided between the first adjustment plate and the corresponding displacement mechanism, and at least one base plate is provided between the second adjustment plate and the corresponding displacement mechanism, and the side of the base plate away from the displacement mechanism is hollowed out, which can effectively reduce the weight of the base plate and prevent the base plate from sliding off the second adjustment plate.

[0021] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects: the utility model provides strip holes on the left and right sides of the displacement assembly, so that after the locking piece is fixed on the first adjustment plate and the locking piece is fixed on the second adjustment plate, the displacement assembly can be fine-tuned to make the relative position between the first adjustment plate and the displacement assembly and between the second adjustment plate and the displacement assembly more accurate, so that the bending accuracy of the heated plastic parts when placed in the mechanism for molding is higher, and during the molding process of the plastic parts, the angle between the first adjustment plate and the second adjustment plate and the positions of the two displacement assemblies can remain unchanged, and the molding stability of products in the same batch is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0024] Figure 3 yes Figure 1 The structural diagram at A in the middle;

[0025] Figure 4 yes Figure 1 Schematic diagram of the structure at B in the middle;

[0026] Figure 5 yes Figure 2 The structural diagram at C in the middle;

[0027] Figure 6 It is a structural schematic diagram of the first guide rail, the second guide rail, the rotating shaft and the gear.

[0028] Reference numerals:

[0029] 1. Frame; 11. Linear guide; 111. Positioning rod; 12. Support block; 13. Support rod; 131. Buffer pad; 2. Bottom plate; 3. First adjustment plate; 31. First guide rail; 311. First gear hole; 312. First rotating hole; 4. Second adjustment plate; 41. Second guide rail; 411. Second gear hole; 412. First limit hole; 42. Support plate; 5. Displacement assembly; 51. Guide plate; 52. Back plate; 511. Strip hole; 6. Locking piece; 71. Rotating shaft; 711. First limit part; 712. Second limit part; 72. Gear; 721. Second limit hole; 73. Rack; 731. Slider; 732. Rack adapter block; 81. Micrometer slide; 82. Connector; 9. Inclinometer; 10. Base plate. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] like Figures 1 to 6 As shown, the utility model discloses an angle-adjustable bending mechanism, comprising a frame 1 and a bottom plate 2 arranged on the frame 1, and further comprising:

[0036] A first adjustment plate 3, which is fixedly mounted on the bottom plate 2;

[0037] A second adjusting plate 4, the lower end of which is rotatably connected to the rear end of the first adjusting plate 3;

[0038] Two displacement components, each having a strip hole 511 on its left and right sides, one displacement component is mounted on the first adjustment plate 3 and can move forward and backward along the first adjustment plate 3, two locking members 6 are arranged in the strip holes 511 on the left and right sides of the displacement component and can lock and fix the displacement component and the first adjustment plate 3; the other displacement component is mounted on the second adjustment plate 4 and can move up and down along the second adjustment plate 4, two locking members 6 are arranged in the strip holes 511 on the left and right sides of the displacement component and can lock and fix the displacement component and the second adjustment plate 4;

[0039] Two angle adjustment components are mounted on the frame 1 and are respectively located on the left and right sides of the second adjustment plate 4. The angle adjustment components pass through the first adjustment plate 3 on the corresponding side through the rotating shaft 71 and are fixedly connected to the second adjustment plate 4 on the corresponding side.

[0040] The utility model provides strip holes 511 on the left and right sides of the displacement component 5, so that after the locking member 6 is fixed on the first adjustment plate 3 and the locking member 6 is fixed on the second adjustment plate 4, the displacement component 5 can be fine-tuned to make the relative positions between the first adjustment plate 3 and the displacement component 5 and between the second adjustment plate 4 and the displacement component 5 more accurate, so that the bending accuracy of the heated plastic parts when placed in the mechanism for molding is higher, and during the molding process of the plastic parts, the angle between the first adjustment plate 3 and the second adjustment plate 4 and the positions of the two displacement components 5 can remain unchanged, and the molding stability of the same batch of products is good.

[0041] When the displacement assembly 5 is roughly adjusted, scale lines may be provided on the sides of the first adjustment plate 3 and the second adjustment plate 4 to facilitate determination of the position of the displacement assembly 5 .

[0042] A first guide rail 31 is provided on the left and right sides of the first adjustment plate 3. Figure 5 As shown, a plurality of first gear holes 311 are provided on the side wall of the first guide rail 31, and the rod of the corresponding locking member 6 passes through the bar hole 511 of the corresponding displacement assembly and is inserted into the first gear hole 311 of the first adjustment plate 3, and the head end of the corresponding locking member 6 abuts against the corresponding displacement assembly; a second guide rail 41 is provided on the left and right sides of the second adjustment plate 4, and a plurality of second gear holes 411 are provided on the side wall of the second guide rail 41, and the rod of the corresponding locking member 6 passes through the bar hole 511 of the corresponding displacement assembly and is inserted into the second gear hole 411 of the second adjustment plate 4, and the head end of the corresponding locking member 6 abuts against the corresponding displacement assembly. The head end of the locking member 6 can be set in a five-pointed star shape or other polygonal shape, which is convenient for users to rotate the locking member 6. The surfaces of the first guide rail 31 and the second guide rail 41 are both provided with a surface layer such as PTFE tape, so that the first guide rail 31 and the second guide rail 41 are wear-resistant and smooth, which is convenient for the displacement assembly to move.

[0043] In the utility model, the displacement assembly includes a guide plate 51 and a support plate 52, the support plate 52 is fixedly mounted on the guide plate 51, and the strip-shaped hole 511 is provided on the left and right sides of the guide plate 51; one displacement assembly is mounted on the first adjustment plate 3 through the guide plate 51, and the left and right sides of the guide plate 51 are respectively clamped on the first adjustment plate 3 so that it can move forward and backward along the first adjustment plate 3; another displacement assembly is mounted on the second adjustment plate 4 through the guide plate 51, and the left and right sides of the guide plate 51 are respectively clamped on the second adjustment plate 4 so that it can move up and down along the second adjustment plate 4, and the support plates 52 on the two displacement assemblies are arranged facing each other. The two side edges of the plastic part are limited by the support plate 52 of the displacement assembly 5, and after adjusting the position of the displacement assembly 5 and the angle between the first adjustment plate 3 and the second adjustment plate 4, the plastic part is placed in the angle-bending mechanism to complete the bending of the plastic part.

[0044] In the present invention, the angle between the backing plate 52 and the second adjustment plate 4 can be set according to actual conditions, and the angle between the backing plate 52 and the first adjustment plate 3 can be set according to actual conditions.

[0045] In the present invention, a fine adjustment component is provided on at least one displacement component, so as to fine-tune the displacement component. Specifically, the fine adjustment component includes a micrometer slide 81 and a connecting member 82 mounted on the micrometer slide 81, and the connecting member 82 is fixedly connected to the displacement component; Figure 3 As shown, when a fine-tuning component is provided on the displacement component arranged on the first adjustment plate 3, the micrometer slide 81 is fixedly installed at the front end of the first adjustment plate 3; when a fine-tuning component is provided on the displacement component arranged on the second adjustment plate 4, the micrometer slide 81 is fixedly installed at the upper end of the second adjustment plate 4.

[0046] In the present invention, two linear guide rails 11 are also vertically mounted on the left and right sides of the frame 1, respectively, and the linear guide rails 11 correspond to the angle adjustment components one by one.

[0047] like Figure 6 As shown, a first rotating hole 312 is formed at the rear end of the first guide rail 31, a first limiting hole 412 is formed at the lower end of the second guide rail 41, and a first limiting portion 711 adapted to the first limiting hole 412 is provided at one end of the rotating shaft 71 close to the first adjusting plate 3. The first guide rail 31 is rotatably mounted on the rotating shaft 71 through the first rotating hole 312, and the second guide rail 41 is fixedly mounted on the rotating shaft 71 through the cooperation between the first limiting hole 412 and the first limiting portion 711. The angle adjustment assembly includes a rotating shaft 71, a gear 72 and a rack 73. The end of the rotating shaft 71 away from the first adjustment plate 3 is provided with a second limiting portion 712. The gear 72 is provided with a second limiting hole 721 adapted to the second limiting portion 712. The gear 72 is fixedly mounted on the rotating shaft 71 through the cooperation of the second limiting hole 721 and the second limiting portion 712. The rack 73 is meshed with the gear 72. The rack 73 is provided with a slider 731 adapted to the linear guide 11. The rack 73 is installed on the linear guide 11 so as to be movable up and down through the slider 731. The upper and lower ends of the rack 73 can be fixed on the linear guide 11 through the positioning rod 111. In the utility model, the positioning rod 111 is a screw.

[0048] In order to more stably support the second adjustment plate 4, a support plate 42 is further included, the support plate 42 is fixedly connected to the second adjustment plate 4, and the left and right sides of the support plate 42 are respectively rotatably connected to the corresponding side rotation shaft 71. In order to more stably support the rotation shaft 71, a support block 12 is provided on the frame 1, and a second rotation hole is provided in the support block 12, and the rotation shaft 71 is rotatably supported in the second rotation hole of the support block 12.

[0049] A plurality of support rods 13 are vertically provided at the rear end of the frame 1, and a buffer pad 131 is provided at the upper end of the support rod 13. When the second adjustment plate 4 is rotated to an angle of 180° with the first adjustment plate 4, the second adjustment plate 4 abuts against the buffer pad 131. In this way, when the second adjustment plate 4 is rotated to an angle of 180° with the first adjustment plate 3, the second adjustment plate 4 abuts against the buffer pad 131.

[0050] In order to more accurately adjust the angle between the second adjustment plate 4 and the first adjustment plate 1 , the utility model may further include an inclinometer 9 , which is mounted on the second adjustment plate 4 .

[0051] Since there is a certain interference at the connection between the first adjustment plate 3 and the second adjustment plate 4, in order to eliminate the influence of the interference on the bending of the plastic part, at least one base plate 10 is provided between the first adjustment plate 3 and the corresponding displacement mechanism, and at least one base plate 10 is provided between the second adjustment plate 4 and the corresponding displacement mechanism, and the plastic parts are placed on the two base plates 10. In order to prevent the base plate 10 from moving and reduce the weight of the base plate 10, the side of the base plate 10 away from the displacement mechanism is hollowed out. The base plate 10 can be a single plate, or it can be composed of a plastic plate and an aluminum plate fixedly connected.

[0052] The steps for using this angle-adjustable bending mechanism are as follows:

[0053] 1. Find the position of the bending line according to the bending size of the plastic part;

[0054] 2. Roughly adjust the positions of the two displacement components 5, and fix the locking member 6 in the first gear hole 311 of the first adjustment plate 3 and the second gear hole 312 of the second adjustment plate 4;

[0055] 4. Use the micrometer knob on the micrometer slide to fine-tune the two displacement mechanisms 5, and lock the displacement assembly with the corresponding first adjustment plate 3 and second adjustment plate 4 through the locking member 6;

[0056] 5. According to the bending angle of the plastic part, manually swing the second adjustment plate 4, the second adjustment plate 4 drives the rotating shaft 71 and the gear 72 to rotate, thereby driving the rack 73 to move up and down along the linear guide rail 11. When the second adjustment plate 4 is adjusted to a proper angle, the rack 73 is fixed to the linear guide rail 11 through the positioning rod 111;

[0057] 6. Heat the bending molding line of the plastic part to the required bending temperature, and place the heated plastic part into the mechanism to achieve high-precision bending of the plastic part.

[0058] Of course, the stability of the bending angle of the plastic part can be further ensured by placing an upper mold on the plastic part.

[0059] All features described in the specification, the attached claims and the drawings, whether alone or in any combination thereof, are important features of the present utility model.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "an implementation", "specific implementation", "other implementations", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment, implementation or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described above may also be combined in any one or more embodiments, implementations or examples in a suitable manner. The technical solution recorded in the utility model also includes a technical solution formed by any one or more of the specific features, structures, materials or characteristics described above in a separate or combined manner.

[0061] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model. Ordinary technicians in the field can change, modify, replace, modify, delete some features, add features or re-combine features to form a technical solution in the above embodiments without departing from the principles and purpose of the utility model within the scope of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the innovative principles of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. An angle-adjustable bending mechanism, comprising a frame (1) and a bottom plate (2) arranged on the frame (1), characterized in that: Also includes: A first adjustment plate (3) fixedly mounted on the base plate (2); A second adjustment plate (4), the lower end of which is rotatably connected to the rear end of the first adjustment plate (3); Two displacement components, each having a strip hole (511) on its left and right sides; one displacement component is mounted on the first adjustment plate (3) and is capable of moving forward and backward along the first adjustment plate (3); two locking members (6) are arranged in the strip holes (511) on the left and right sides of the displacement component and are capable of locking and fixing the displacement component and the first adjustment plate (3); the other displacement component is mounted on the second adjustment plate (4) and is capable of moving up and down along the second adjustment plate (4); the two locking members (6) are arranged in the strip holes (511) on the left and right sides of the displacement component and are capable of locking and fixing the displacement component and the second adjustment plate (4); Two angle adjustment components are mounted on the frame (1) and are respectively located on the left and right sides of the second adjustment plate (4). The angle adjustment components pass through the first adjustment plate (3) on the corresponding side through a rotating shaft (71) and are fixedly connected to the second adjustment plate (4) on the corresponding side.

2. The angle-adjustable bending mechanism according to claim 1, characterized in that: A first guide rail (31) is provided on the left and right sides of the first adjustment plate (3), and a plurality of first gear holes (311) are provided on the side wall of the first guide rail (31). The rod of the corresponding locking member (6) passes through the bar hole (511) of the corresponding displacement assembly and is inserted into the first gear hole (311) of the first adjustment plate (3), and the head end of the corresponding locking member (6) abuts against the corresponding displacement assembly; a second guide rail (41) is provided on the left and right sides of the second adjustment plate (4), and a plurality of second gear holes (411) are provided on the side wall of the second guide rail (41). The rod of the corresponding locking member (6) passes through the bar hole (511) of the corresponding displacement assembly and is inserted into the second gear hole (411) of the second adjustment plate (4), and the head end of the corresponding locking member (6) abuts against the corresponding displacement assembly.

3. The angle-adjustable bending mechanism according to claim 2, characterized in that: A first rotating hole (312) is formed at the rear end of the first guide rail (31), a first limiting hole (412) is formed at the lower end of the second guide rail (41), and a first limiting portion (711) matched with the first limiting hole (412) is provided at one end of the rotating shaft (71) close to the first adjusting plate (3); the first guide rail (31) is rotatably mounted on the rotating shaft (71) through the first rotating hole (312), and the second guide rail (41) is fixedly mounted on the rotating shaft (71) through the cooperation between the first limiting hole (412) and the first limiting portion (711).

4. The angle-adjustable bending mechanism according to claim 1, characterized in that: The displacement assembly comprises a guide plate (51) and a support plate (52), wherein the support plate (52) is fixedly mounted on the guide plate (51), and the strip-shaped holes (511) are provided on the left and right sides of the guide plate (51); one displacement assembly is mounted on the first adjustment plate (3) through the guide plate (51), and the left and right sides of the guide plate (51) are respectively clamped on the first adjustment plate (3) so as to be able to move forward and backward along the first adjustment plate (3); the other displacement assembly is mounted on the second adjustment plate (4) through the guide plate (51), and the left and right sides of the guide plate (51) are respectively clamped on the second adjustment plate (4) so ​​as to be able to move up and down along the second adjustment plate (4); the support plates (52) on the two displacement assemblies are arranged facing each other.

5. The angle-adjustable bending mechanism according to claim 1, characterized in that: At least one displacement assembly is provided with a fine adjustment assembly, the fine adjustment assembly comprising a micrometer slide (81) and a connecting member (82) mounted on the micrometer slide (81), the connecting member (82) being fixedly connected to the displacement assembly; when the displacement assembly arranged on the first adjustment plate (3) is provided with a fine adjustment assembly, the micrometer slide (81) is fixedly mounted on the front end of the first adjustment plate (3); when the displacement assembly arranged on the second adjustment plate (4) is provided with a fine adjustment assembly, the micrometer slide (81) is fixedly mounted on the upper end of the second adjustment plate (4).

6. The angle-adjustable bending mechanism according to claim 1, characterized in that: The machine frame (1) further comprises two linear guide rails (11) respectively mounted vertically on the left and right sides of the frame (1), wherein the linear guide rails (11) correspond to the angle adjustment components one by one; the angle adjustment components comprise a rotating shaft (71), a gear (72) and a rack (73); a second limiting portion (712) is provided at one end of the rotating shaft (71) away from the first adjustment plate (3); a second limiting hole (721) adapted to the second limiting portion (712) is provided on the gear (72); ) is fixedly mounted on the rotating shaft (71) through the cooperation of the second limiting hole (721) and the second limiting portion (712); the rack (73) and the gear (72) are meshed, and a slider (731) adapted to the linear guide rail (11) is provided on the rack (73), and the rack (73) can be mounted on the linear guide rail (11) so as to be movable up and down through the slider (731), and the upper and lower ends of the rack (73) can be fixed on the linear guide rail (11) through positioning rods (111).

7. The angle-adjustable bending mechanism according to claim 6, characterized in that: The machine frame (1) further comprises a support plate (42), wherein the support plate (42) is fixedly connected to the second adjustment plate (4), and the left and right sides of the support plate (42) are respectively rotatably connected to the rotating shafts (71) on the corresponding sides; a support block (12) is provided on the frame (1), a second rotating hole is provided in the support block (12), and the rotating shaft (71) is rotatably supported in the second rotating hole of the support block (12).

8. The angle-adjustable bending mechanism according to claim 1, characterized in that: A plurality of support rods (13) are vertically arranged at the rear end of the frame (1), and a buffer pad (131) is arranged at the upper end of the support rod (13). When the second adjustment plate (4) rotates to form an angle of 180° with the first adjustment plate (3), the second adjustment plate (4) abuts against the buffer pad (131).

9. The angle-adjustable bending mechanism according to claim 1, characterized in that: It also comprises an inclinometer (9), wherein the inclinometer (9) is mounted on the second adjustment plate (4).

10. The angle-adjustable bending mechanism according to claim 1, characterized in that: At least one base plate (10) is provided between the first adjustment plate (3) and the corresponding displacement mechanism, and at least one base plate (10) is provided between the second adjustment plate (4) and the corresponding displacement mechanism.

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