PC board bending process and equipment capable of conducting inner angle bending

Abstract

The invention relates to the technical field of PC board bending, in particular to a PC board bending process and equipment capable of conducting inner angle bending. The equipment comprises a bending module, a displacement driving module and an auxiliary pressing module, the displacement driving module is used for driving a to-be-bent part of a PC board to enter an acting position of the bending module and providing floating adjustment in the left-right direction, the bending module presses and bends the to-be-bent part of the PC board, and the auxiliary pressing module provides top auxiliary pressing when the PC board is bent. Under the action of the auxiliary pressing module, the position of the dispersed pressing part can be adaptively adjusted according to the length of the PC board, the auxiliary pressing module comprises a fixed pressing section fixed to one side and a movable pressing section capable of adapting to the length adjustment of the PC board in a three-point mode, and compared with a single weight pressing mode, the beneficial effect that adaptive adjustment can be conducted according to the length of the PC board is achieved; and the generation possibility of defective products is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of PC board bending, and particularly to a PC board bending process and equipment capable of performing inner angle bending. Background Art

[0002] The inner angle bending process of a PC board refers to that during the bending process, the board forms an inward concave acute angle or right angle at the bending line, making the overall shape after bending present an obvious "V" shape or "U" shape structure. This process is very common in the processing of PC boards. For example, it is intensively used in parts with corner features such as the outer shells and frames of some electronic devices. Therefore, it is very necessary to explore and improve it.

[0003] During the bending process of a PC board, operators usually preheat and soften the area to be bent of the board in order to obtain a better forming effect. In actual operation, when bending pressure is applied to the preheated and softened area, due to the redistribution of internal stress and the heat conduction effect of the material, warping deformation will occur at the other end of the PC board that is not directly pressured. The conventional solution is to press the other end with a heavy object when bending one end. Such a treatment method can play an effective role when the PC board is short. Once the PC board is long, insufficient coverage (pressing of the heavy object) at the end far from the bending will increase the probability of obvious deformation in the middle vacancy, increasing the defective rate of the product. Therefore, corresponding improvements are needed. Summary of the Invention

[0004] The present invention provides a PC board bending process and equipment capable of performing inner angle bending, which solves the technical problem that part of the board surface is prone to deformation when bending a PC board with a too long size in the related art.

[0005] To achieve the above object, the present invention provides a PC board bending equipment capable of performing inner angle bending, including a bending module, a displacement driving module and an auxiliary pressing module. The displacement driving module is used to drive the area to be bent of the PC board into the action position of the bending module and provide floating adjustment in the left and right directions. The bending module presses and bends the area to be bent of the PC board. The auxiliary pressing module provides top auxiliary pressing when bending the PC board. The pressing action areas include a full-coverage pressing part and a scattered pressing part at the end far from the bending. Under the action of the auxiliary pressing module, the position of the scattered pressing part can be adjusted adaptively according to the length of the PC board.

[0006] The displacement driving module includes a lead screw slide table, a base, a slide rail, a material loading table and a second ejector. The lead screw slide table is arranged perpendicular to the bending direction of the PC board. The base is fixedly arranged on the acting end of the lead screw slide table and slides back and forth under the action of the lead screw slide table. Slide rails are symmetrically arranged on the base in the left-right direction. A material loading table is slidably arranged on the slide rails. A second ejector is fixedly arranged on the base, and the output end of the second ejector is fixedly connected to one side of the material loading table.

[0007] The auxiliary pressing module includes a bracket, a third ejector, a base, a fixed pressing plate, a central push rod, a first pressing head, an edge push rod and a second pressing head. A bracket is fixedly arranged on the base. The third ejector is loaded on the bracket. A base is fixedly installed on the output end of the third ejector. A fixed pressing plate is fixedly installed at the bottom of the base. A central push rod and an edge push rod are fixedly installed on one side of the base facing the bending module. A first pressing head is fixedly arranged on the output end of the central push rod. A second pressing head is fixedly arranged on the output end of the edge push rod.

[0008] Further, the traction directions of the third ejector, the central push rod and the edge push rod are all parallel to the vertical direction, and the bottoms of the fixed pressing plate, the first pressing head and the second pressing head are flush.

[0009] Further, a baffle is fixedly arranged at one side edge of the material loading table to provide support in the feeding direction when the PC board is bent.

[0010] In the above technical solution, the fixed pressing plate forms a fully covered pressing part, which cooperates with the independently adjustable first pressing head and the second pressing head to form a "three-point type" movable pressing part. The first pressing head and the second pressing head can be independently driven by the central push rod and the edge push rod to move in the horizontal plane, so that they can be accurately positioned at key positions according to the actual length of the PC board, such as the central intersection point of the placement line and the two edge corner points close to the bending line. In addition, the fixed pressing plate provides a large-area basic pressing, and the three adjustable pressing points form additional and position-variable pressure supports, jointly constituting a pressing surface that can be dynamically adjusted according to the board length.

[0011] As a further improvement of this technical solution, the displacement driving module further includes fixed fingers, a servo motor, a rotating shaft, movable fingers and finger tips. Fixed fingers are fixedly installed on the material loading table. A servo motor is fixedly installed on the side wall of the fixed fingers. The output end of the servo motor is connected to the movable fingers through a rotating shaft. Finger tips are fixedly installed at the ends of the fixed fingers and the movable fingers. A depression matching the bending module is arranged at the end of the finger tip.

[0012] As a further improvement of the technical solution, the bending module includes a bottom plate, a mounting frame, a gasket, a first ejector, a bending punch and a through groove. The mounting frame is fixedly arranged on the bottom plate. The gasket and the first ejector are fixedly installed on the mounting frame. The bending punch is fixedly installed at the output end of the first ejector. The through groove is formed on the mounting frame.

[0013] The present invention also provides a PC board bending process capable of performing inner angle bending, including the following steps: S1. Loading: Place the PC board on the loading table, and the part of the PC board to be bent is pre-heated and softened. S2. Drawing the bending line: Draw a bending line along the edge of the part of the PC board to be bent. S3. Drawing the placement line: Taking the bending line and the other side of the PC board as boundaries to form a rectangular patch, and draw a placement line along the diagonal of the rectangular patch. S4. Placing the pressing unit: Align the fixed pressing plate with the side of the rectangular patch in S away from the bending line, and drive the central push rod and the edge push rod to make the first pressing head align with the central intersection point of the placement line, and the second pressing head align with the two edge corner points of the placement line close to the bending line. After confirming all alignments, drive the third ejector to generate a downward pressing force to press the PC board. S5. Bending: Drive the part of the PC board to be bent into the action part of the bending module through the displacement driving module, and the first ejector drives the bending punch to press down to perform inner angle bending on the PC board. S6. Unloading: Drive the movable finger to rotate relative to the fixed finger through the servo motor to lift the PC board, which is convenient for taking and unloading.

[0014] Compared with the prior art, the present invention provides a PC board bending process and equipment capable of performing inner angle bending, having the following beneficial effects: Aiming at the adverse situation that part of the board surface is prone to deformation when bending a PC board with too long dimensions, the present invention makes corresponding improvements with a segmented pressing scheme based on the auxiliary pressing module. First, align the fixed pressing plate with the side of the PC board away from the bending line, and then drive the central push rod and the edge push rod according to the actual length of the PC board, so as to drive the first pressing head to align with the central intersection point of the placement line, and the second pressing head to align with the two edge corner points of the placement line close to the bending line. After confirming all alignments, drive the third ejector to generate a downward pressing force to press the PC board.

[0015] This auxiliary pressing function includes a fixed pressing section fixed on one side and a movable pressing section that can adapt to the length adjustment of the PC board in a "three-point" form. Compared with the single heavy object pressing method, it has the advantage of being adaptable to the length adjustment of the PC board. Through the auxiliary pressing function, the PC board obtains a sufficient anti-deformation pressing surface when performing inner angle bending, effectively reducing the possibility of defective products. Description of the Drawings

[0016] Figure 1 This is a schematic diagram of the overall structure of a PC board bending device capable of performing inner-angle bending proposed by the present invention when no PC board is loaded; Figure 2 This is a schematic diagram of the overall structure of a PC board bending device capable of performing inner-angle bending proposed by the present invention after loading a PC board; Figure 3 This is a schematic diagram of the disassembled structure of a PC board bending device capable of performing inner-angle bending proposed by the present invention; Figure 4 This is a three-dimensional structure diagram of the bending module in a PC board bending device capable of performing inner-angle bending proposed by the present invention; Figure 5 This is a three-dimensional structure diagram of the displacement driving module in a PC board bending device capable of performing inner-angle bending proposed by the present invention; Figure 6 This is a further expanded structure diagram of the displacement driving module in a PC board bending device capable of performing inner-angle bending proposed by the present invention; Figure 7 This is a three-dimensional structure diagram of the auxiliary pressing module in a PC board bending device capable of performing inner-angle bending proposed by the present invention; Figure 8 This is a layout diagram of the placement line and the bending line in a PC board bending process capable of performing inner-angle bending proposed by the present invention.

[0017] In the figure: 10, bending module; 101, bottom plate; 102, mounting rack; 103, gasket; 104, first pushing member; 105, bending press head; 106, through groove; 20, displacement driving module; 201, screw rod slide table; 202, base; 203, slide rail; 204, loading table; 2040, baffle; 2041, fixed finger; 2042, servo motor; 2043, rotating shaft; 2044, movable finger; 2045, finger tip; 205, second pushing member; 30, auxiliary pressing module; 301, support; 302, third pushing member; 303, base; 304, fixed pressing plate; 305, central push rod; 306, first pressing head; 307, edge push rod; 308, second pressing head. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Refer to Figures 1 to 8As shown in the figure, the present invention provides a PC board bending device capable of performing inner angle bending, which includes a bending module 10, a displacement driving module 20 and an auxiliary pressing module 30. The displacement driving module 20 is used to drive the part of the PC board to be bent into the action position of the bending module 10 and provide floating adjustment in the left-right direction. The bending module 10 presses and bends the part of the PC board to be bent. The auxiliary pressing module 30 provides top auxiliary pressing when the PC board is bent. The pressing action parts include a full-coverage pressing part and a scattered pressing part far from one end of the bending. Under the action of the auxiliary pressing module 30, the position of the scattered pressing part can be adjusted adaptively according to the length of the PC board.

[0020] Reference Figure 1 、 Figure 2 and Figure 5 As shown in the figure, the displacement driving module 20 includes a lead screw slider 201, a base 202, a slide rail 203, a loading table 204 and a second ejector 205. The lead screw slider 201 is arranged perpendicular to the bending direction of the PC board. The base 202 is fixedly arranged on the acting end of the lead screw slider 201 and slides back and forth under the action of the lead screw slider 201. Slide rails 203 are symmetrically arranged on the base 202 in the left-right direction. A loading table 204 is slidably arranged on the slide rails 203. A second ejector 205 is fixedly arranged on the base 202, and the output end of the second ejector 205 is fixedly connected to one side of the loading table 204.

[0021] In the displacement driving module 20, the lead screw slider 201 controls the feeding of the base 202, that is, controls the forward and backward movement operations required when the PC board is bent. Correspondingly, under the action of the second ejector 205, the movement of the loading table 204 relative to the slide rails 203 can control the left and right movement operations required when the PC board is bent. The forward and backward movement operations cooperate with the loading and unloading of the PC board, and the left and right movement operations cooperate with the position adjustment and alignment of the part of the PC board to be bent relative to the bending module 10 before bending.

[0022] Reference Figure 1 、 Figure 3 and Figure 7 As shown in the figure, the auxiliary pressing module 30 includes a bracket 301, a third ejector 302, a base 303, a fixed pressing plate 304, a central push rod 305, a first pressing head 306, an edge push rod 307 and a second pressing head 308. A bracket 301 is fixedly arranged on the base 202. A third ejector 302 is loaded on the bracket 301. A base 303 is fixedly installed on the output end of the third ejector 302. A fixed pressing plate 304 is fixedly installed at the bottom of the base 303. A central push rod 305 and an edge push rod 307 are fixedly installed on one side of the base 303 facing the bending module 10. A first pressing head 306 is fixedly arranged on the output end of the central push rod 305, and a second pressing head 308 is fixedly arranged on the output end of the edge push rod 307.

[0023] In view of the disadvantage that part of the PC board surface is prone to deformation when bending the PC board with an overly long size, the present invention makes corresponding improvements with a segmented pressing solution based on the auxiliary pressing module 30.

[0024] Specifically: when the auxiliary pressing module 30 is in use, first align the fixed pressing plate 304 with the side of the PC board away from the bending line, and then, according to the actual length of the PC board, drive the central push rod 305 and the edge push rod 307, so as to drive the first pressing head 306 to align with the central intersection point of the placement line, and the second pressing head 308 to align with the two edge corner points of the placement line close to the bending line. After confirming that all are aligned, drive the third pushing member 302 to generate a downward pressing action to press the PC board.

[0025] This auxiliary pressing action includes a fixed pressing section fixed on one side and a movable pressing section that can adapt to the length adjustment of the PC board in a "three-point" form. Compared with the single heavy object pressing method, it has the advantage of being adaptable to adjust according to the length of the PC board. Through the auxiliary pressing action, the PC board obtains a sufficient anti-deformation pressing surface during the inner angle bending, effectively reducing the possibility of defective products.

[0026] Reference Figure 7 As shown in the figure, the traction directions of the third pushing member 302, the central push rod 305 and the edge push rod 307 are all parallel to the vertical direction, and the bottoms of the fixed pressing plate 304, the first pressing head 306 and the second pressing head 308 are flush.

[0027] Reference Figure 6 As shown in the figure, a baffle 2040 is fixedly arranged at one side edge of the material loading table 204 to provide support in the feeding direction when the PC board is bent.

[0028] It should be clear that the three-point adjustable pressing formed by the fixed pressing plate 304, the first pressing head 306 and the second pressing head 308 is the key to solving the bending deformation of the long board. Then, the central push rod 305 and the edge push rod 307 independently drive the first pressing head 306 and the second pressing head 308 to move in the horizontal plane, so that they can be accurately positioned at key positions according to the actual length of the PC board, such as the central intersection point of the placement line and the two edge corner points close to the bending line, and can provide a more uniform, wider coverage range and position-adapted pressing force. In addition, the three adjustable pressing points form an additional and position-variable pressure support, jointly constituting a segmented adaptive pressing structure of the pressing surface that can be dynamically adjusted according to the board length, effectively suppressing the warping and deformation of the board surface far from the bending area, and greatly reducing the defective product rate caused by deformation.

[0029] Reference Figure 5As shown, the displacement drive module 20 also includes a fixed finger 2041, a servo 2042, a rotating shaft 2043, a movable finger 2044 and a finger 2045. The fixed finger 2041 is fixedly installed on the loading platform 204, and the servo 2042 is fixedly installed on the side wall of the fixed finger 2041. The output end of the servo 2042 is connected to the movable finger 2044 through the rotating shaft 2043. The ends of the fixed finger 2041 and the movable finger 2044 are both fixedly installed with a finger 2045, and the end of the finger 2045 is provided with a recess that matches the bending module 10.

[0030] refer to Figure 4 As shown, the bending module 10 includes a base plate 101, a mounting frame 102, a gasket 103, a push piece 104, a bending pressure head 105 and a through slot 106. The base plate 101 is fixedly provided with a mounting frame 102, the mounting frame 102 is fixedly provided with a gasket 103 and a push piece 104, the output end of the push piece 104 is fixedly provided with a bending pressure head 105, and the mounting frame 102 is provided with a through slot 106.

[0031] It should be specially noted that the ejector member 104, the ejector member 205, and the ejector member 302 mentioned above are implemented using corresponding types of cylinders or linear push rods and other existing parts that can produce linear traction. In addition, the edge push rod 307 and the center push rod 305 are both electric push rods, and the specific working principle of the above structure will not be described in detail.

[0032] In addition, the screw slide 201 provides precise feeding in the front-to-back direction perpendicular to the bending direction for loading and unloading materials and aligning the bending position; The second push member 205 drives the loading platform 204 to slide along the slide rail 203 in the left and right direction, providing floating adjustment capability in this direction, ensuring that the part of the PC board to be bent can be accurately aligned with the bending module 10; A mechanism consisting of a fixed finger 2041, a servo 2042, a movable finger 2044 and a finger 2045 is integrated on the loading platform 204. The servo 2042 can drive the movable finger 2044 to cooperate with the fixed finger 2041 to automatically lift the bent PC board, thereby simplifying and accelerating the unloading process.

[0033] It should be clear that the independent adjustment of the front and back and left and right bidirectional directions of the displacement drive module 20 can ensure that the part of the PC board to be bent can be accurately moved to the bottom of the bending pressure head 105, forming precise positioning, ensuring that the pressing action is applied to the most effective support point, preventing the sheet from sliding or local deformation during the bending process, and improving the consistency of the bending angle and shape. In addition, the left and right floating adjustment function of the displacement drive module 20 enhances the equipment's tolerance for the initial placement position or dimensional tolerance of the PC board.

[0034] Working principle: Place the PC board softened by heating on the loading table 204. Draw a bending line at the position to be bent, and draw a rectangular patch and its diagonal line with the bending line and the opposite side as the boundaries. The diagonal line forms the placement line. Align and fix the pressing plate 304 on the side of the rectangular patch away from the bending line. Drive the central push rod 305 and the edge push rod 307 to align the first pressing head 306 with the central intersection point of the placement line and the second pressing head 308 with the two corner points of the placement line near the bending line. Start the third ejector 302 to press and fix. At this time, start the screw slide table 201 and the second ejector 205. Use the screw slide table 201 to control the front and rear positions, and the second ejector 205 to control the left and right positions, so as to move the PC board and make the part to be bent accurately enter below the bending module 10. Through the front and rear and left and right floating adjustments of the displacement drive module 20, ensure that the part to be bent is accurately aligned with the bending press head 105. The first ejector 104 drives the bending press head 105 to press down to complete the inner corner bending. During the process, an adaptive pressing surface can be formed by the independently driven first pressing head 306 and the second pressing head 308, dynamically matching the length of the PC board and suppressing the bending deformation of the long board. After the inner corner bending is completed, the servo motor 2042 drives the movable finger 2044 to rotate, and cooperates with the fixed finger 2041 to lift the PC board and remove the PC board.

[0035] Reference Figures 1 to 8 As shown, based on the above PC board bending equipment capable of performing inner corner bending, the present invention also provides a PC board bending process capable of performing inner corner bending, including the following steps: S1. Loading: Place the PC board on the loading table 204, and the part of the PC board to be bent is pre-heated and softened. S2. Drawing the bending line: Draw a bending line along the edge of the part of the PC board to be bent. S3. Drawing the placement line: Use the bending line and the other side of the PC board as the boundaries to form a rectangular patch, and draw the placement line along the diagonal of the rectangular patch. S4. Placing the pressing unit: Align the fixed pressing plate 304 with the side of the rectangular patch in S3 away from the bending line, and drive the central push rod 305 and the edge push rod 307 to align the first pressing head 306 with the central intersection point of the placement line and the second pressing head 308 with the two edge corner points of the placement line close to the bending line. After confirming all alignments, drive the third ejector 302 to produce a pressing effect and press the PC board. S5. Bending: Drive the part of the PC board to be bent into the action part of the bending module 10 through the displacement drive module 20, and the first ejector 104 drives the bending press head 105 to press down to perform inner corner bending on the PC board. S6. Unloading: Drive the movable finger 2044 to rotate relative to the fixed finger 2041 through the servo motor 2042 to lift the PC board for convenient removal and unloading.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention, which are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A PC board bending device capable of performing inner angle bending, characterized in that Including: A bending module (10), a displacement driving module (20) and an auxiliary pressing module (30); The displacement driving module (20) is used to drive the part of the PC board to be bent into the acting position of the bending module (10) and provide floating adjustment in the left - right direction. The bending module (10) presses and bends the part of the PC board to be bent. The auxiliary pressing module (30) provides top - side auxiliary pressing when the PC board is bent. The pressing acting parts include a full - coverage pressing part and a dispersed pressing part far from one end of the bending. Under the action of the auxiliary pressing module (30), the position of the dispersed pressing part can be adaptively adjusted according to the length of the PC board.

2. The PC board bending device capable of performing inner angle bending according to claim 1, wherein, The displacement driving module (20) includes a lead screw slide (201) arranged perpendicular to the bending acting direction of the PC board, a base (202), a slide rail (203), a loading table (204) and a second ejecting part (205). The base (202) is fixedly arranged on the acting end of the lead screw slide (201) and slides back and forth under the action of the lead screw slide (201). Slide rails (203) are symmetrically arranged on the base (202) in the left - right direction. A loading table (204) is slidably arranged on the slide rails (203). A second ejecting part (205) is fixedly arranged on the base (202), and the output end of the second ejecting part (205) is fixedly connected to one side of the loading table (204).

3. The PC board bending device capable of performing inner angle bending according to claim 2, characterized in that, The auxiliary pressing module (30) includes a bracket (301) fixedly arranged on the base (202), a third ejecting part (302), a base (303), a fixed pressing plate (304), a central push rod (305), a first pressing head (306), an edge push rod (307) and a second pressing head (308). The bracket (301) is loaded with a third ejecting part (302). The output end of the third ejecting part (302) is fixedly installed with a base (303). The bottom of the base (303) is fixedly installed with a fixed pressing plate (304). A central push rod (305) and an edge push rod (307) are fixedly installed on one side of the base (303) facing the bending module (10). The output end of the central push rod (305) is fixedly provided with a first pressing head (306), and the output end of the edge push rod (307) is fixedly provided with a second pressing head (308).

4. A PC board bending device capable of performing inner angle bending according to claim 3, characterized in that, The traction directions of the third ejecting part (302), the central push rod (305) and the edge push rod (307) are all parallel to the vertical direction, and the bottoms of the fixed pressing plate (304), the first pressing head (306) and the second pressing head (308) are flush.

5. A PC board bending device capable of performing inner angle bending according to claim 3, characterized in that, A baffle (2040) is fixedly arranged at one side edge of the loading table (204) to provide support in the feeding direction when the PC board is bent.

6. The PC board bending device capable of performing inner angle bending according to claim 1, characterized in that, The displacement driving module (20) further includes a fixed finger (2041), a servo motor (2042), a rotating shaft (2043), a movable finger (2044) and a finger head (2045) fixedly installed on the loading table (204). The servo motor (2042) is arranged on the side wall of the fixed finger (2041). The output end of the servo motor (2042) is connected with the movable finger (2044) through the rotating shaft (2043). Finger heads (2045) are fixedly installed at the ends of the fixed finger (2041) and the movable finger (2044). A recess matching the bending module (10) is arranged at the end of the finger head (2045).

7. The PC board bending device capable of performing inner corner bending according to claim 1, characterized in that, The bending module (10) includes a bottom plate (101), a mounting frame (102), a gasket (103), a first ejector (104), a bending punch (105) and a through groove (106). The mounting frame (102) is fixedly arranged on the bottom plate (101). The gasket (103) and the first ejector (104) are fixedly installed on the mounting frame (102). The bending punch (105) is fixedly installed at the output end of the first ejector (104). The through groove (106) is formed in the mounting frame (102).

8. A bending process using the PC board bending device capable of performing inner angle bending according to any one of claims 1-7, characterized in that, It includes the following steps: S1. Loading: Place the PC board on the loading table (204), and the area to be bent of the PC board is pre-heated and softened. S2. Drawing the bending line: Draw a bending line along the edge of the area to be bent of the PC board. S3. Drawing the placement line: Taking the bending line and the other side of the PC board as boundaries to form a rectangular patch, and draw a placement line along the diagonal of the rectangular patch. S4. Placing and pressing the unit: Align the fixed pressing plate (304) with the side of the rectangular patch away from the bending line in S3, and drive the central push rod (305) and the edge push rod (307) to drive the first pressing head (306) to align with the central intersection point of the placement line, and the second pressing head (308) to align with the two edge corner points of the placement line close to the bending line. After confirming all alignments, drive the third ejector (302) to generate a downward pressing force to press the PC board. S5. Bending: Drive the area to be bent of the PC board into the action part of the bending module (10) through the displacement driving module (20), and the first ejector (104) drives the bending punch (105) to press down to perform an inner angle bending on the PC board. S6. Unloading: Drive the movable finger (2044) to rotate relative to the fixed finger (2041) through the servo motor (2042) to lift the PC board.

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