Bridge rectifier pin angle-adjustable bending device and control method thereof

Abstract

The invention discloses a bridge rectifier pin angle-adjustable bending device which comprises a bending device body, two hinged folding plate assemblies are arranged on the bending device body, one hinged folding plate assembly is fixedly arranged, and the other hinged folding plate assembly is transversely and movably arranged. A pin forming die cavity is formed between the two hinged folding plate assemblies, and the bending device body is provided with a synchronous angle control assembly used for synchronously controlling angle adjustment of the two hinged folding plate assemblies and keeping the angles consistent. The problems that in the prior art, a bending device is inconvenient in angle adjustment, poor in bending assembly synchronism and low in machining precision are solved, accurate and efficient bending machining of bridge rectifier pins of different specifications is achieved, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This invention relates to the technical field of bridge rectifier processing equipment, and in particular to a bridge rectifier pin adjustable angle bending device and its control method. Background Technology

[0002] As a core component in power electronics for AC rectification, the bending accuracy of the bridge rectifier's pins directly affects the subsequent assembly quality and electrical connection stability with the circuit board. During the mass production of bridge rectifiers, the pins need to be bent to specific angles such as 90°, 45°, and 135° according to the installation requirements of different application scenarios. Therefore, extremely high requirements are placed on the angle adjustability, processing consistency, and stability of the pin bending device.

[0003] Currently, existing bridge rectifier pin bending devices mainly suffer from the following technical defects, making it difficult to meet the requirements of high-precision and multi-specification processing: Insufficient angle adjustment capability and poor adaptability: Traditional bending devices mostly use fixed mold structures, with one mold only corresponding to one bending angle. When processing pins with different angles, the entire mold set must be replaced, which is not only cumbersome and time-consuming, but also increases mold procurement costs and inventory management pressure. Some devices with angle adjustment functions only control the adjustment mechanism for a single bending component, and cannot ensure that the angle of the bending components set symmetrically on the top and bottom or left and right changes synchronously. This can easily lead to inconsistent bending angles on both sides of the pin, resulting in a "crooked foot" phenomenon, which requires manual correction and reduces production efficiency.

[0004] Poor synchronization of bending components and low processing accuracy: In existing devices, the components used for clamping and bending leads are mostly independently driven structures, lacking an effective synchronization control mechanism. During the bending process, deviations in the opening and closing speeds and angles of the bending components on both sides are prone to occur, leading to uneven force on the leads and quality problems such as deformation and breakage. This problem is particularly prominent for small-diameter leads. In view of the shortcomings of the existing technology, there is an urgent need for a bridge rectifier pin adjustable angle bending device with reasonable structural design, convenient angle adjustment, good synchronization of bending components and high processing accuracy, so as to solve the problems of poor adaptability, low processing consistency and complex operation of the existing device, and meet the needs of modern electronic component production for efficient and precise processing equipment.

[0005] Therefore, the existing technology of bridge rectifier processing equipment needs further improvement. Summary of the Invention

[0006] The purpose of this invention is to provide an adjustable-angle bending device for bridge rectifier pins and its control method, so as to solve the problems of inconvenient angle adjustment of bending devices, poor synchronization of bending components and low processing accuracy in the prior art, and to achieve precise and efficient bending processing of bridge rectifier pins of different specifications, thereby improving production efficiency and product quality.

[0007] To achieve the above objectives, the present invention adopts the following solution: A bridge rectifier pin adjustable angle bending device includes a bending device body, on which two hinged folding plate assemblies are provided, one of which is fixed and the other is laterally movable; a pin forming cavity is provided between the two hinged folding plate assemblies; and a synchronous angle control component is provided on the bending device body for synchronously controlling the angle adjustment of the two hinged folding plate assemblies and keeping the angle consistent. The bending device body is provided with a tension control component for controlling the separation or closing of the two hinged folding plate assemblies.

[0008] Furthermore, the bending device body includes a housing, on which a bridge rectifier positioning seat is provided, and on one side of the bridge rectifier positioning seat is a clamping device mounting seat.

[0009] Furthermore, the hinged folding plate assembly includes an upper hinged shaft, a middle hinged shaft, and a lower hinged shaft. A forming upper template is hinged between the upper hinged shaft and the middle hinged shaft, and a forming lower template is hinged between the middle hinged shaft and the lower hinged shaft.

[0010] Furthermore, the pin forming cavity includes multiple pin guide grooves disposed on the inner sidewalls of the two upper forming templates and the two lower forming templates, and the pin guide grooves on the upper and lower forming templates are aligned with each other.

[0011] Furthermore, the synchronous angle control component includes multiple vertical guide rails disposed on the bending device body. A lifting upper crossbar, a lifting middle crossbar, and a lifting lower crossbar are movably disposed on the vertical guide rails. The lifting upper crossbar, the lifting middle crossbar, and the lifting lower crossbar are respectively provided with a horizontal upper straight slot, a horizontal middle straight slot, and a horizontal lower straight slot. The ends of the two upper hinged shafts at the top are movably disposed within the horizontal upper straight slot, the ends of the two middle hinged shafts at the middle are movably disposed within the horizontal middle straight slot, and the two lower hinged shafts at the bottom are movably disposed within the horizontal lower straight slot. The bending device body is provided with a vertical direction holding component for maintaining the upper and lower hinged shafts on the same hinged folding plate assembly in the same vertical position.

[0012] Furthermore, the vertical direction holding assembly includes a transverse guide rail on the housing, two transverse sliders are movably disposed within the transverse guide rail, a vertical rod is disposed on the transverse slider, and a vertical straight slot is disposed on the vertical rod. The upper hinge shaft and the lower hinge shaft on the same hinged folding plate assembly are movably installed in the same vertical straight slot. One of the transverse sliders is provided with a folding plate angle control assembly for controlling the vertical movement of one of the lower hinge shafts.

[0013] Furthermore, the opening and closing control component includes a transverse push rod motor disposed on the lifting crossbar, and the output end of the transverse push rod motor is provided with a first hinge sleeve, which is hinged to the hinge central shaft that is movably and transversely disposed.

[0014] Furthermore, the folding plate angle control assembly includes a vertical push rod motor disposed on one of the horizontal sliders, and a second hinge sleeve disposed at the output end of the vertical push rod motor, the second hinge sleeve being sleeved on the lower hinge shaft.

[0015] A control method includes the following steps: It also includes a closed-loop control system, which comprises: Angle detection module: There are two angle detection modules, which are respectively installed at the hinge of the upper forming template and the lower forming template of the two hinged folding plate assemblies, and are used to collect the actual included angle data between the upper forming template and the lower forming template in real time. Pressure sensing module: The pressure sensing module consists of multiple sets, each corresponding to one of the inner sidewalls of the pin guide groove, and is used to collect the deformation pressure data generated by the pin on the pin guide groove during the bending process in real time. Central control module: The central control module is electrically connected to the angle detection module, the pressure sensing module, the vertical push rod motor and the horizontal push rod motor respectively. The central control module has preset "target angle threshold range" and "safe pressure threshold range" that match different pin specifications. When the actual included angle data collected by the angle detection module exceeds the target included angle threshold range, the central control module sends a compensation command to the vertical push rod motor, controlling the vertical push rod motor to drive the hinged lower shaft to make fine adjustments along the vertical straight groove until the actual included angle returns to the target threshold range. When the deformation pressure data collected by the pressure sensing module exceeds the safe pressure threshold range, the central control module first sends a pause command to the horizontal push rod motor, and then sends an angle correction command to the vertical push rod motor according to the pressure deviation value. After the pressure data returns to the safe threshold range, the central control module controls the horizontal push rod motor to resume the pushing action.

[0016] Furthermore, it also includes the following steps: Positioning and clamping: Place the bridge rectifier on the bridge rectifier positioning seat of the bending device body, and clamp the bridge rectifier by clamping the clamping device on the clamping device mounting seat, so that the pins extend into the lower part of the bridge rectifier positioning seat and correspond to the pin guide groove in the pin forming mold cavity between the two hinged folding plate assemblies. Angle adjustment: The vertical push rod motor of the folding plate angle control component drives the lower hinge shaft of one of the hinged folding plate components to move up and down along the vertical straight groove. Under the action of the lifting upper crossbar, lifting middle crossbar, lifting lower crossbar, and horizontal upper straight groove, horizontal middle straight groove, and horizontal lower straight groove of the synchronous angle control component, the forming upper template and forming lower template of the two hinged folding plate components are synchronously adjusted to adjust the included angle. The forming upper template and forming lower template of the same hinged folding plate component are kept vertically symmetrical with the horizontal middle straight groove as the center line until the preset bending angle is reached. Bending execution: The hinge central axis of the movable hinged folding plate assembly is driven by the horizontal push rod motor of the tension and opening control component to move along the horizontal straight groove, so that the movable hinged folding plate assembly moves closer to the fixed hinged folding plate assembly. The upper forming template and the lower forming template of the two hinged folding plate assemblies cooperate to bend the pin in the pin guide groove. Reset and removal: After bending is completed, the movable hinged folding plate assembly is driven away from the fixed hinged folding plate assembly by the tension and opening control component, the clamping device is released, the processed bridge rectifier is taken out, and each component is reset.

[0017] In summary, the advantages of this invention over the prior art are: This invention addresses the shortcomings of existing bridge rectifier processing equipment. Through its structural design, it offers the following advantages: convenient angle adjustment and strong adaptability. By incorporating a folding plate angle control component and a synchronous angle control component, the angle adjustment of the upper and lower forming templates of two hinged folding plate assemblies can be achieved synchronously simply by driving the lower hinge shaft up and down via a vertical push rod motor. This eliminates the need to change molds to accommodate different pin bending angles, significantly reducing changeover time and production costs. Furthermore, it provides excellent synchronization. The lifting upper crossbar, lifting middle crossbar, lifting lower crossbar, and corresponding straight slot structure in the synchronous angle control component ensure that the upper, middle, and lower hinge shafts of the two hinged folding plate assemblies are always at the same horizontal height, ensuring consistent angles between the two pairs of upper and lower forming templates. Simultaneously, the vertical holding component ensures the vertical symmetry of the angle of the same hinged folding plate assembly, preventing pin misalignment. Furthermore, the closed-loop control system monitors the processing in real time through angle detection and pressure sensing modules, promptly correcting deviations and further improving bending accuracy. The system boasts a rational structural design and simple operation. Employing a modular design, the horizontal and vertical push rod motors control the opening and closing and angle adjustment of the hinged folding plate assembly, respectively. Combined with the central control module, this achieves automated processing. Operators only need to position and retrieve the workpiece, reducing operational difficulty and increasing production efficiency. Simultaneously, the device has a compact overall structure, low failure rate, and is easy to maintain. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Sectional view along line AA; Figure 3 For the present invention Figure 1 Sectional view along line BB; Figure 4 This is a schematic diagram of the mold opening process for the first angle state of the present invention; Figure 5 This is a schematic diagram of mold closing in the first angle state of the present invention; Figure 6 This is a schematic diagram of the mold opening process for the second angle state of the present invention; Figure 7 This is a schematic diagram of the mold closing in the second angle state of the present invention. Detailed Implementation

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

[0020] Please see Figures 1-7 This invention provides a bridge rectifier pin adjustable angle bending device, including a bending device body 1, on which two hinged bending plate assemblies 2 are provided, one of which is fixed and the other is laterally movable; a pin forming cavity 3 is provided between the two hinged bending plate assemblies 2; and a synchronous angle control component 4 is provided on the bending device body 1 for synchronously controlling the angle adjustment of the two hinged bending plate assemblies 2 and keeping the angle consistent. The bending device body 1 is provided with a tension control component 5 for controlling the separation or closing of the two hinged folding plate assemblies 2.

[0021] The bending device body 1 of the present invention includes a housing 101, on which a bridge rectifier positioning seat 102 is provided. A clamping device mounting seat 103 is provided on one side of the bridge rectifier positioning seat 102. A clamping device can be installed in the clamping device mounting seat 103. The clamping device is used to clamp the bridge rectifier being processed, and the pins extend into the underside of the bridge rectifier positioning seat 102. Angle adjustment principle: The vertical push rod motor 100 of the folding plate angle control component 4085 drives the lower hinge shaft 203 to move up and down along the vertical straight groove 4084, which drives the upper forming template 204 and the lower forming template 205 of the same hinged folding plate component 2 to rotate around the hinged central shaft 202, thereby realizing the angle adjustment to adapt to different bending requirements.

[0022] The opening and closing control principle: The horizontal push rod motor 501 of the opening and closing control component 5 pushes the movable hinge central shaft 202 to move along the horizontal central straight groove 406 through the first hinge sleeve 502, so that the movable hinge folding plate component 2 moves closer to or further away from the fixed hinge folding plate component 2, thereby completing the pin clamping, bending and loosening.

[0023] Synchronization Guarantee Principle: The lifting upper crossbar 402, lifting middle crossbar 403, and lifting lower crossbar 404 of the synchronization angle control component 4 constrain the horizontal height of the hinged upper shaft 201, hinged middle shaft 202, and hinged lower shaft 203 of the two components to be consistent through the horizontal upper straight slot 405, horizontal middle straight slot 406, and horizontal lower straight slot 407, respectively; the vertical straight slot 4084 of the vertical keeping component 408 ensures that the vertical position of the hinged upper shaft 201 and hinged lower shaft 203 of the same component is the same, ensuring that the angles of the two components are synchronized and symmetrical.

[0024] Closed-loop control principle: The angle detection module collects the angle data between the upper forming template 204 and the lower forming template 205, the pressure sensing module collects the pressure data between the pin and the pin guide groove 301, and the central control module compares the data with the preset threshold and controls the vertical push rod motor 100 to fine-tune the angle and the horizontal push rod motor 501 to pause or resume, so as to ensure bending accuracy and safety.

[0025] The hinged folding plate assembly 2 of the present invention includes an upper hinged shaft 201, a middle hinged shaft 202 and a lower hinged shaft 203. A forming upper template 204 is hinged between the upper hinged shaft 201 and the middle hinged shaft 202, and a forming lower template 205 is hinged between the middle hinged shaft 202 and the lower hinged shaft 203.

[0026] The pin forming cavity 3 of the present invention includes multiple pin guide grooves 301 disposed on the inner sidewalls of the two upper forming templates 204 and the two lower forming templates 205, and the pin guide grooves 301 on the upper and lower forming templates 204 and the lower forming templates 205 are aligned with each other.

[0027] The synchronous angle control component 4 of the present invention includes multiple vertical guide rails 401 disposed on the bending device body 1. A lifting upper crossbar 402, a lifting middle crossbar 403, and a lifting lower crossbar 404 are movably disposed on the vertical guide rails 401. The lifting upper crossbar 402, the lifting middle crossbar 403, and the lifting lower crossbar 404 are respectively provided with a horizontal upper straight groove 405, a horizontal middle straight groove 406, and a horizontal lower straight groove 407. The ends of the two upper hinged shafts 201 are movably disposed within the horizontal upper straight groove 405, the ends of the two middle hinged shafts 202 are movably disposed within the horizontal middle straight groove 406, and the two lower hinged shafts 203 are movably disposed within the horizontal lower straight groove 407. The bending device body 1 is provided with a vertical direction holding component 408 for keeping the upper hinged shafts 201 and lower hinged shafts 203 on the same hinged folding plate assembly 2 in the same vertical position.

[0028] The vertical direction holding assembly 408 of the present invention includes a horizontal guide rail 4081 on the outer shell 101. Two horizontal sliders 4082 are movably disposed within the horizontal guide rail 4081. A vertical rod 4083 is disposed on the horizontal slider 4082. A vertical straight slot 4084 is disposed on the vertical rod 4083. The upper hinge shaft 201 and the lower hinge shaft 203 on the same hinged folding plate assembly 2 are movably installed in the same vertical straight slot 4084. A folding plate included angle control assembly 4085 for controlling the vertical movement of one of the lower hinge shafts 203 is disposed on one of the horizontal sliders 4082.

[0029] The opening and closing control component 5 of the present invention includes a transverse push rod motor 501 disposed on the lifting crossbar 403. The output end of the transverse push rod motor 501 is provided with a first hinge sleeve 502, which is hinged to the hinge central shaft 202 that is movably arranged laterally.

[0030] The folding plate angle control component 4085 of the present invention includes a vertical push rod motor 100 disposed on one of the horizontal sliders 4082, and a second hinge sleeve 200 disposed at the output end of the vertical push rod motor 100, the second hinge sleeve 200 being sleeved on the lower hinge shaft 203.

[0031] A control method includes the following steps: It also includes a closed-loop control system, which comprises: Angle detection module: There are two angle detection modules, which are respectively installed at the hinge of the upper forming template 204 and the lower forming template 205 of the two hinged folding plate assemblies 2, and are used to collect the actual included angle data between the upper forming template 204 and the lower forming template 205 in real time. Pressure sensing module: The pressure sensing module consists of multiple sets, each corresponding to one of the inner sidewalls of the pin guide groove 301, and is used to collect the deformation pressure data generated by the pin on the pin guide groove 301 during the bending process in real time. Central control module: The central control module is electrically connected to the angle detection module, the pressure sensing module, the vertical push rod motor 100 and the horizontal push rod motor 501 respectively. The central control module has preset "target angle threshold range" and "safe pressure threshold range" that match different pin specifications. When the actual included angle data collected by the angle detection module exceeds the target included angle threshold range, the central control module sends a compensation command to the vertical push rod motor 100, controlling the vertical push rod motor 100 to drive the hinged lower shaft 203 to make a fine adjustment along the vertical straight groove 4084 until the actual included angle returns to the target threshold range. When the deformation pressure data collected by the pressure sensing module exceeds the safe pressure threshold range, the central control module first sends a pause command to the horizontal push rod motor 501, and then sends an angle correction command to the vertical push rod motor 100 according to the pressure deviation value. After the pressure data returns to the safe threshold range, the central control module controls the horizontal push rod motor 501 to resume the pushing action.

[0032] The extension and retraction distance of the transverse push rod motor 501 is used to adjust the forward and backward movement of the movable hinge central shaft 202. During the forward and backward movement of the hinge central shaft 202, the movable hinge folding plate assembly 2 will be pulled to move closer to or away from the fixed hinge folding plate assembly 2. The vertical push rod motor 100 drives the lower hinge shaft 203 at the bottom to move up and down. When the lower hinge shaft 203 moves up and down, it adjusts the angle between the upper forming template 204 and the lower forming template 205, thereby adapting to different pin processing requirements. The horizontal upper straight slot 405, the horizontal middle straight slot 406, and the horizontal lower straight slot 407 ensure that the two hinged upper shafts 201 are always at the same horizontal height, the two hinged middle shafts 202 are always at the same horizontal height, and the two hinged lower shafts 203 are always at the same horizontal height. This ensures that the forming upper template 204 and forming lower template 205 in the two hinged folding plate assemblies 2 are always consistent, so that the moving mold and the fixed mold are always matched. The vertical straight slot 4084 ensures that the included angle of the hinged folding plate assembly 2 remains symmetrical about the horizontal straight slot 406 as the center line. Pulling the hinge central shaft 202 will adjust the included angle of the hinge folding plate assembly 2 and make symmetrical adjustments up and down with the direction of the horizontal straight groove 406 as the center line.

[0033] The present invention also includes the following steps: Positioning and clamping: The bridge rectifier is placed on the bridge rectifier positioning seat 102 of the bending device body 1, and the bridge rectifier is clamped by the clamping device on the clamping device mounting seat 103, so that the pins extend into the lower part of the bridge rectifier positioning seat 102 and correspond to the pin guide groove 301 in the pin forming mold cavity 3 between the two hinged folding plate assemblies 2. Angle adjustment: The vertical push rod motor 100 of the folding plate angle control component 4085 drives the lower hinge shaft 203 of one of the hinged folding plate components 2 to move up and down along the vertical straight groove 4084. Under the action of the lifting upper crossbar 402, lifting middle crossbar 403, lifting lower crossbar 404 and the horizontal upper straight groove 405, horizontal middle straight groove 406 and horizontal lower straight groove 407 of the synchronous angle control component 4, the forming upper template 204 and forming lower template 205 of the two hinged folding plate components 2 are synchronously adjusted to adjust their included angle. The forming upper template 204 and forming lower template 205 of the same hinged folding plate component 2 are kept vertically symmetrical with the horizontal middle straight groove 406 as the center line until the preset bending angle is reached. Bending execution: The horizontal push rod motor 501 of the tension and opening control component 5 drives the hinge central shaft 202 of the movable hinged folding plate assembly 2 to move along the horizontal central straight groove 406, so that the movable hinged folding plate assembly 2 moves closer to the fixed hinged folding plate assembly 2. The upper forming template 204 and the lower forming template 205 of the two hinged folding plate assemblies 2 cooperate to bend the pin in the pin guide groove 301. Reset and removal: After bending is completed, the hinged folding plate assembly 2 is moved away from the fixed hinged folding plate assembly 2 by the tension control component 5, the clamping device is released, the processed bridge rectifier is taken out, and each component is reset.

[0034] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge rectifier pin adjustable angle bending device, comprising a bending device body (1), characterized in that: The bending device body (1) is provided with two hinged folding plate assemblies (2), one of which is fixedly arranged, and the other is transversely movably arranged; a pin forming mold cavity (3) is arranged between the two hinged folding plate assemblies (2); the bending device body (1) is provided with a synchronous angle control assembly (4) for synchronously controlling the angle adjustment and keeping the angles consistent of the two hinged folding plate assemblies (2). The bending device body (1) is provided with a closing and opening control assembly (5) for controlling the separation or folding of the two hinged folding plate assemblies (2).

2. The bridge rectifier pin angle adjustable bending device according to claim 1, characterized in that: The bending device body (1) comprises an outer shell (101), and the outer shell (101) is provided with a bridge rectifier positioning seat (102), and one side of the bridge rectifier positioning seat (102) is provided with a clamping device mounting seat (103).

3. The bridge rectifier pin angle adjustable bending device according to claim 2, characterized in that: The hinged folding plate assembly (2) comprises a hinged upper shaft (201), a hinged middle shaft (202) and a hinged lower shaft (203), a forming upper mold plate (204) is hinged between the hinged upper shaft (201) and the hinged middle shaft (202), and a forming lower mold plate (205) is hinged between the hinged middle shaft (202) and the hinged lower shaft (203).

4. The bridge rectifier pin angle adjustable bending device according to claim 3, characterized in that: The pin forming mold cavity (3) comprises a plurality of pin guide grooves (301) arranged on the inner side walls of the two forming upper mold plates (204) and the inner side walls of the two forming lower mold plates (205), and the pin guide grooves (301) on the upper and lower forming upper mold plates (204) and the forming lower mold plates (205) are arranged in alignment with each other.

5. The bridge rectifier pin angle adjustable bending device according to claim 4, characterized in that: The synchronous angle control assembly (4) comprises a plurality of vertical guide rails (401) arranged on the bending device body (1), a lifting upper cross bar (402), a lifting middle cross bar (403) and a lifting lower cross bar (404) are movably arranged on the vertical guide rails (401), a horizontal upper straight slot (405), a horizontal middle straight slot (406) and a horizontal lower straight slot (407) are respectively arranged on the lifting upper cross bar (402), the lifting middle cross bar (403) and the lifting lower cross bar (404), the ends of the upper two hinged upper shafts (201) are movably arranged in the horizontal upper straight slot (405), the ends of the middle two hinged middle shafts (202) are movably arranged in the horizontal middle straight slot (406), and the lower two hinged lower shafts (203) are movably arranged in the horizontal lower straight slot (407), and the bending device body (1) is provided with a vertical direction maintaining assembly (408) for maintaining the hinged upper shaft (201) and the hinged lower shaft (203) on the same hinged folding plate assembly (2) at the same vertical position.

6. The bridge rectifier pin angle adjustable bending device according to claim 5, characterized in that: The vertical direction holding assembly (408) comprises a transverse guide rail (4081) on the shell (101), two transverse sliders (4082) movably arranged in the transverse guide rail (4081), a vertical rod (4083) arranged on the transverse sliders (4082), a vertical straight slot (4084) arranged on the vertical rod (4083), and the articulated upper shaft (201) and the articulated lower shaft (203) on the same articulated folding plate assembly (2) are movably arranged in the same vertical straight slot (4084), and one of the transverse sliders (4082) is provided with a folding plate included angle control assembly (4085) for controlling the up-down movement of one of the articulated lower shafts (203).

7. The bridge rectifier pin angle adjustable bending device according to claim 6, characterized in that: The opening and closing control assembly (5) comprises a transverse push rod motor (501) arranged on the lifting middle cross rod (403), and a first articulated sleeve (502) is arranged at the output end of the transverse push rod motor (501), and the first articulated sleeve (502) is articulated on the articulated middle shaft (202) movably arranged in the transverse direction.

8. The bridge rectifier pin angle adjustable bending device according to claim 7, characterized in that: The folding plate included angle control assembly (4085) comprises a vertical push rod motor (100) arranged on one of the transverse sliders (4082), a second articulated sleeve (200) arranged at the output end of the vertical push rod motor (100), and the second articulated sleeve (200) is sleeved on the articulated lower shaft (203).

9. A control method including the bending apparatus according to any one of claims 1 to 8, characterized by, The method comprises the following steps: It also comprises a closed-loop control system, which comprises: An angle detection module: the angle detection module is two, respectively corresponding to the articulated part of the forming upper die plate (204) and the forming lower die plate (205) of the two articulated folding plate assemblies (2), for real-time acquisition of the actual included angle data between the forming upper die plate (204) and the forming lower die plate (205); A pressure sensing module: the pressure sensing module is a plurality of groups, which are embedded in the inner side wall of each pin guide groove (301) one by one, for real-time acquisition of the deformation pressure data of the pin guide groove (301) generated by the pin in the bending process; A central control module: the central control module is electrically connected with the angle detection module, the pressure sensing module, the vertical push rod motor (100) and the transverse push rod motor (501), and the central control module is pre-set with a "target included angle threshold range" and a "safe pressure threshold range" matched with different specifications of pins; When the actual included angle data collected by the angle detection module exceeds the target included angle threshold range, the central control module sends a compensation instruction to the vertical push rod motor (100) to control the vertical push rod motor (100) to drive the articulated lower shaft (203) to fine-tune along the vertical straight slot (4084) until the actual included angle returns to the target threshold range; When the deformation pressure data collected by the pressure sensing module exceeds the safe pressure threshold range, the central control module first sends a pause instruction to the horizontal push rod motor (501), and then sends an angle correction instruction to the vertical push rod motor (100) according to the pressure deviation value. After the pressure data returns to the safe threshold range, the central control module controls the horizontal push rod motor (501) to resume the pushing action.

10. The control method of claim 9, wherein: Further comprising the following steps: Positioning and clamping: Place the bridge rectifier on the bridge rectifier positioning seat (102) of the bending device body (1), clamp the bridge rectifier through the clamping device on the clamping device mounting seat (103), make the pins extend into the pin guide groove (301) in the pin forming mold cavity (3) between the two hinged folding plate assemblies (2), and correspond to the pin guide groove (301) in the pin forming mold cavity (3) between the two hinged folding plate assemblies (2); Angle adjustment: Drive the hinged lower shaft (203) of one of the hinged folding plate assemblies (2) to move up and down along the vertical straight slot (4084) through the vertical push rod motor (100) of the folding plate included angle control assembly (4085), and under the action of the lifting upper cross bar (402), the lifting middle cross bar (403), the lifting lower cross bar (404), the horizontal upper straight slot (405), the horizontal middle straight slot (406), and the horizontal lower straight slot (407) of the synchronous angle control assembly (4), the forming upper die plate (204) and the forming lower die plate (205) of the two hinged folding plate assemblies (2) are adjusted synchronously, and the forming upper die plate (204) and the forming lower die plate (205) of the same hinged folding plate assembly (2) are symmetrically arranged above and below the horizontal middle straight slot (406) as the center line, until the preset bending angle is reached; Bending execution: Drive the hinged middle shaft (202) of the movably arranged hinged folding plate assembly (2) to move along the horizontal middle straight slot (406) through the horizontal push rod motor (501) of the opening and closing control assembly (5), so that the movably arranged hinged folding plate assembly (2) moves close to the fixedly arranged hinged folding plate assembly (2), and the forming upper die plate (204) and the forming lower die plate (205) of the two hinged folding plate assemblies (2) cooperate to bend the pins in the pin guide groove (301); Reset and take out: After bending is completed, drive the movably arranged hinged folding plate assembly (2) away from the fixedly arranged hinged folding plate assembly (2) through the opening and closing control assembly (5), loosen the clamping device, take out the processed bridge rectifier, and reset each assembly.

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