Pre-bending auxiliary jig

Abstract

The utility model relates to the technical field of electronic equipment, and discloses a pre-bending auxiliary jig which comprises a bottom plate and a first bending part arranged on the bottom plate, and the first bending part comprises a first pre-bending block, a first fixing block and a second pre-bending block which are sequentially arranged in the first direction. The first pre-bending block is provided with a first bending surface in contact with the printed circuit board, the first fixing block is provided with a second bending surface in contact with the printed circuit board, the second pre-bending block is provided with a third bending surface in contact with the printed circuit board, the first bending surface and the second bending surface are not coplanar, and the second bending surface and the third bending surface are not coplanar. The first pre-bending block can rotate relative to the first fixing block so as to change the included angle between the first bending face and the second bending face, and the second pre-bending block can rotate relative to the second fixing block so as to change the included angle between the third bending face and the second bending face. The pre-bending auxiliary jig not only can carry out auxiliary bending on the printed circuit board, but also can meet the requirements of different products for bending angles.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a pre-bending auxiliary fixture. Background Art

[0002] Some small printed circuit boards in existing drones require soft-hard functional boards, which requires the printed circuit boards to be installed in the drone at a certain angle. However, existing printed circuit boards are usually designed as straight boards during production. Before installing the printed circuit boards in the drone, the printed circuit boards need to be pre-bent to meet the installation requirements. However, there is currently no pre-bending jig dedicated to printed circuit boards, and manual bending is usually used. However, manual bending is not only easy to damage the printed circuit boards, but also easy to cause the printed circuit boards to fail to achieve the design effect, reducing product quality. Utility Model Content

[0003] The utility model provides a pre-bending auxiliary fixture, which can not only assist in bending a printed circuit board to improve product quality, but also meet the requirements of different products for bending angles.

[0004] The utility model provides a pre-bending auxiliary fixture, which is used for assisting the bending of a printed circuit board. The pre-bending auxiliary fixture comprises a bottom plate and a first bending portion arranged on the bottom plate, wherein the first bending portion comprises a first pre-bending block, a first fixing block and a second pre-bending block which are sequentially arranged along a first direction;

[0005] The first pre-folding block has a first bending surface in contact with the printed circuit board, the first fixing block has a second bending surface in contact with the printed circuit board, the second pre-folding block has a third bending surface in contact with the printed circuit board, the first bending surface is not coplanar with the second bending surface, and the second bending surface is not coplanar with the third bending surface;

[0006] The first pre-folding block can rotate relative to the first fixed block to change the angle between the first bending surface and the second bending surface, and the second pre-folding block can rotate relative to the second fixed block to change the angle between the third bending surface and the second bending surface.

[0007] The pre-bending auxiliary jig provided by the utility model assists in pre-bending the printed circuit board by setting a first pre-bending block, a second pre-folding block and a first fixed block. Specifically, when bending the printed circuit board, the printed circuit board can be first placed on the second bending surface of the first fixed block, and then the parts of the printed circuit board located on both sides of the second bending surface are bent, so that the parts on both sides are respectively fitted with the first bending surface and the third bending surface, thereby completing the bending of the printed circuit board. Since the first pre-folding block and the second pre-folding block can be rotated relative to the first fixed block respectively, when different bending angles are required, the purpose can be achieved by rotating the first pre-folding block and the second pre-folding block. Therefore, the pre-bending auxiliary jig provided by the utility model can not only assist in bending the printed circuit board and improve product quality, but also meet the requirements of different products for bending angles.

[0008] In some possible implementation schemes, the first bending portion further includes a second fixing block and a third fixing block;

[0009] The second fixing block is located at a side of the first pre-folding block away from the first fixing block, and the first pre-folding block is clamped between the first fixing block and the second fixing block;

[0010] The third fixing block is located at a side of the second pre-folding block away from the first fixing block, and the second pre-folding block is clamped between the first fixing block and the third fixing block.

[0011] In some possible implementations, a first clamping groove is provided on a side of the first pre-folding block facing the second fixing block, and at least a portion of the first fixing block is clamped in the first clamping groove;

[0012] A second clamping groove is provided on a side of the second pre-folding block facing the third fixing block, and at least a portion of the third fixing block is clamped in the second clamping groove.

[0013] In some possible implementations, the first pre-folding block has a first arcuate surface on one side facing the bottom plate, the first pre-folding block also has a first mounting surface parallel to the first direction, the first mounting surface is provided with a first arc-shaped rotation groove, the bending direction of the first rotation groove is the same as the bending direction of the first arcuate surface, the first pre-folding block is connected to the bottom plate by a first bolt passing through the first rotation groove, and the first bolt can move relative to the first pre-folding block along the extension direction of the first rotation groove;

[0014] The second pre-folding block has a second arc-shaped surface on one side surface facing the base plate. The second pre-folding block also has a second mounting surface parallel to the first direction. The second mounting surface is provided with a second arc-shaped rotation groove. The bending direction of the second rotation groove is the same as the bending direction of the second arc-shaped surface. The second pre-folding block is connected to the base plate by a second bolt passing through the second rotation groove, and the second bolt can move relative to the second pre-folding block along the extension direction of the second rotation groove.

[0015] In some possible implementation schemes, the second fixing block has a fourth bending surface in contact with the printed circuit board, and the fourth bending surface is not coplanar with the first bending surface;

[0016] The third fixing block has a fifth bending surface in contact with the printed circuit board, and the fifth bending surface is not coplanar with the third bending surface.

[0017] In some possible implementations, the second bending surface is provided with a positioning column, and the positioning column is used to cooperate with a positioning hole provided on the printed circuit board to position the printed circuit board and the first fixing block.

[0018] In some possible implementations, it further includes a second bending portion disposed on the bottom plate, wherein the second bending portion includes a third pre-folded block;

[0019] The third pre-folding block has a sixth bending surface and a seventh bending surface in contact with the printed circuit board, the sixth bending surface and the seventh bending surface are arranged along the first direction, and the sixth bending surface and the seventh bending surface are not coplanar;

[0020] The sixth bending surface is provided with avoidance holes for avoiding electrical components of the printed circuit board.

[0021] In some possible embodiments, the third pre-folding block has a third curved surface on the side facing the base plate, and the third pre-folding block also has a third mounting surface parallel to the first direction, and the third mounting surface is provided with a third arc-shaped rotation groove, and the bending direction of the third rotation groove is the same as the bending direction of the third curved surface, and the third pre-folding block is connected to the base plate by a third bolt passing through the third rotation groove, and the third bolt can be moved relative to the third pre-folding block along the extension direction of the third rotation groove to change the angle between the seventh bending surface and the eighth bending surface.

[0022] In some possible implementations, the second bending portion further includes a fourth fixing block, and the fourth fixing block and the third pre-folding block are arranged along the first direction;

[0023] A third clamping groove is provided on a side of the third pre-folding block facing the fourth fixing block, and at least a portion of the fourth fixing block is clamped in the third clamping groove.

[0024] In some possible implementation schemes, the fourth fixing block is provided with a slot for inserting the printed circuit board, and the width of the slot along the first direction is the same as the thickness of the printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a pre-bending auxiliary jig for bending a printed circuit board in an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the pre-bending auxiliary fixture in the embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the pre-bending auxiliary jig in the embodiment of the utility model after the pre-bending blocks are removed;

[0028] Figure 4 This is a schematic diagram of the structure of the first pre-folding block in the embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the second pre-folding block in the embodiment of the utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the third pre-folding block in the embodiment of the utility model;

[0031] Figure 7 It is a top view of the pre-bending auxiliary fixture in the embodiment of the utility model.

[0032] In the figure:

[0033] 10-circuit board; 11-electrical component; 100-bottom plate; 110-first mounting hole; 120-second mounting hole; 130-third mounting hole; 200-first bending portion; 210-first pre-folding block; 211-first bending surface; 212-first clamping groove; 213-first arcuate surface; 214-first mounting surface; 2141-first rotating groove; 220-first fixing block; 221-second bending surface; 222-positioning column; 230-second pre-folding block; 231-third bending surface; 232-second clamping groove; 233-second arcuate surface; 234-second mounting surface Mounting surface; 2341-second rotating groove; 240-second fixed block; 241-fourth bending surface; 250-third fixed block; 251-fifth bending surface; 260-first bolt; 270-second bolt; 300-second bending portion; 310-third pre-folding block; 311-sixth bending surface; 3111-avoidance hole; 312-seventh bending surface; 313-third clamping groove; 314-third arc surface; 315-third mounting surface; 3151-third rotating groove; 320-fourth fixed block; 321-eighth bending surface; 322-slot; 330-third bolt. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] refer to Figure 1 and Figure 2 The pre-bending auxiliary jig in the embodiment of the utility model can be used to assist in bending the printed circuit board 10, so that the printed circuit board 10 can be installed in the drone according to the design requirements, thereby improving the quality of the product. The pre-bending auxiliary jig includes a base plate 100, a first bending portion 200 and a second bending portion 300. The first bending portion 200 and the second bending portion 300 are both arranged on the base plate 100, and the first bending portion 200 and the second bending portion 300 can bend the printed circuit board 10 into different shapes respectively, so as to meet different bending requirements.

[0036] like Figure 2As shown, the first bending portion 200 may include a first pre-folding block 210, a second pre-folding block 230, a first fixed block 220, a second fixed block 240 and a third fixed block 250, wherein the first fixed block 220, the second fixed block 240 and the third fixed block 250 can be fixed on the base plate 100, the first pre-folding block 210 is located between the first fixed block 220 and the second fixed block 240, and the second pre-folding block 230 is located between the first fixed block 220 and the third fixed block 250, that is, the second fixed block 240, the first pre-folding block 210, the first fixed block 220, the second pre-folding block 230 and the third fixed block 250 can be regarded as being arranged in sequence along the first direction. The first pre-folding block 210 can be installed on the bottom plate 100 or removed from the bottom plate 100, and the first fixing block 220 and the second fixing block 240 can cooperate to clamp the first pre-folding block 210, so that when the first pre-folding block 210 is installed on the bottom plate 100, the first pre-folding block 210 and the bottom plate 100 are relatively fixed. The second pre-folding block 230 can also be installed on the bottom plate 100 or removed from the bottom plate 100, and the first fixing block 220 and the third fixing block 250 can cooperate to clamp the second pre-folding block 230, so that when the second pre-folding block 230 is installed on the bottom plate 100, the second pre-folding block 230 and the bottom plate 100 are relatively fixed.

[0037] For reference Figures 2 to 5 The first pre-folding block 210 has a first bending surface 211 in contact with the printed circuit board 10 on the side facing away from the bottom plate 100, and the first fixing block 220 has a second bending surface 221 in contact with the printed circuit board 10 on the side facing away from the bottom plate 100. The first bending surface 211 and the second bending surface 221 are not coplanar, that is, there is a certain angle between the first bending surface 211 and the second bending surface 221. The second pre-folding block 230 has a third bending surface 231 in contact with the printed circuit board 10 on the side facing away from the bottom plate 100. The third bending surfaces 231 are not coplanar, that is, there is a certain angle between the second bending surface 221 and the third bending surface 231. The second fixing block 240 has a fourth bending surface 241 in contact with the printed circuit board 10 on the side facing away from the base plate 100, and the third fixing block 250 has a fifth bending surface 251 in contact with the printed circuit board 10 on the side facing away from the base plate 100. The fourth bending surface 241 is not coplanar with the first bending surface 211, and the fifth bending surface 251 is not coplanar with the third bending surface 231.

[0038] In this embodiment, the second bending surface 221 can be arranged parallel to the bottom plate 100, and the second bending surface 221 is provided with a plurality of positioning posts 222. When the printed circuit board 10 is pre-bent by using the first bending portion 200, the positioning holes provided on the printed circuit board 10 can be matched with the positioning posts 222, so as to position the printed circuit board 10 and the first bending portion 200. It can be understood that positioning the printed circuit board 10 by using the second bending surface 221 parallel to the bottom plate 100 is convenient for the operator to operate, and can be more convenient for positioning between the printed circuit board 10 and the first bending portion 200.

[0039] When the printed circuit board 10 is pre-bent by using the first bending portion 200, the printed circuit board 10 can be bent by using the first bending surface 211, the second bending surface 221 and the third bending surface 231, and at this time, the printed circuit board 10 can form a three-stage bending structure. Alternatively, the printed circuit board 10 can be bent by using the first bending surface 211, the second bending surface 221, the third bending surface 231 and the fourth bending surface 241, or the printed circuit board 10 can be bent by using the first bending surface 211, the second bending surface 221, the third bending surface 231 and the fifth bending surface 251, and at this time, the printed circuit board 10 can form a four-stage bending structure. Alternatively, the printed circuit board 10 can be bent by using the first bending surface 211, the second bending surface 221, the third bending surface 231, the fourth bending surface 241 and the fifth bending surface 251, and at this time, the printed circuit board 10 can form a five-stage bending structure. That is to say, the second fixing block 240 and the third fixing block 250 in this embodiment can not only be used to fix the first pre-folding block 210 and the second pre-folding block 230, but can also assist in pre-bending the printed circuit board 10 when necessary.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, the first pre-folding block 210 is provided with a first snap-fitting groove 212 on the side facing the second fixing block 240, at least a portion of the second fixing block 240 can be snap-fitted into the first snap-fitting groove 212, and a portion of the surface of the first pre-folding block 210 on one side facing the first fixing block 220 can abut against the first fixing block 220. The second pre-folding block 230 is provided with a second snap-fitting groove 232 on the side facing the third fixing block 250, at least a portion of the third fixing block 250 can be snap-fitted into the second snap-fitting groove 232, and a portion of the surface of the second pre-folding block 230 on one side facing the first fixing block 220 can abut against the first fixing block 220. It should be noted that the snap-fitting involved in this embodiment can be understood as that the first pre-folding block 210 and the second fixing block 240 are relatively fixed in the first direction, and the second pre-folding block 230 and the third fixing block 250 are relatively fixed in the first direction.

[0041] The first pre-folding block 210 has two first mounting surfaces 214 respectively parallel to the first direction, and the shape of the first mounting surface 214 is fan-shaped, and the first pre-folding block 210 has a first arc surface 213 on the side facing the bottom plate 100. At this time, the first pre-folding block 210 can rotate relative to the bottom plate 100 around an axis perpendicular to the first mounting surface 214, thereby changing the angle between the first bending surface 211 and the second bending surface 221 to meet different bending requirements of the printed circuit board 10. For example, refer to Figure 4 and Figure 7 The two first mounting surfaces 214 are respectively provided with arc-shaped first rotation grooves 2141, and the bending direction of the first rotation grooves 2141 is the same as the bending direction of the first arc-shaped surface 213. The base plate 100 is also provided with first mounting holes 110 whose two ends are respectively connected with the two first rotation grooves 2141. When the first pre-folding block 210 is installed on the base plate 100, the first bolt 260 can be used to pass through one first rotation groove 2141, the first mounting hole 110 and the other first rotation groove 2141 in sequence, and then the first bolt 260 and the first mounting surface 214 can be locked by a nut, so that the first pre-folding block 210 and the base plate 100 are relatively fixed.

[0042] The first bolt 260 can move relative to the first pre-folding block 210 along the extension direction of the first rotation groove 2141, thereby changing the relative position between the first bolt 260 and the first rotation groove 2141, that is, changing the relative position between the first pre-folding block 210 and the bottom plate 100, and changing the angle between the first bending surface 211 and the second bending surface 221. Specifically, when it is necessary to adjust the relative position between the first pre-folding block 210 and the bottom plate 100, the first bolt 260 can be removed first, and then the first pre-folding block 210 can be rotated to change the relative position between the first rotation groove 2141 and the first mounting hole 110. After rotating to the preset position, the first bolt 260 is used to fix the first pre-folding block 210 and the bottom plate 100.

[0043] Similar, please refer to Figure 5 and Figure 7The second pre-folding block 230 has two second mounting surfaces 234 respectively parallel to the first direction, the second mounting surface 234 is fan-shaped, and the second pre-folding block 230 has a second arc surface 233 on the side facing the bottom plate 100. At this time, the second pre-folding block 230 can rotate relative to the bottom plate 100 around an axis perpendicular to the second mounting surface 234, thereby changing the angle between the third bending surface 231 and the second bending surface 221 to meet different bending requirements of the printed circuit board 10. Exemplarily, the two second mounting surfaces 234 are respectively provided with an arc-shaped second rotation groove 2341, and the bending direction of the second rotation groove 2341 is the same as the bending direction of the second arc-shaped surface 233. The base plate 100 is also provided with a second mounting hole 120 whose two ends are respectively connected to the two second rotation grooves 2341. When the second pre-folding block 230 is installed on the base plate 100, the second bolt 270 can be used to pass through a second rotation groove 2341, the second mounting hole 120 and another second rotation groove 2341 in sequence, and then the second bolt 270 and the second mounting surface 234 can be locked using a nut, so that the second pre-folding block 230 and the base plate 100 are relatively fixed.

[0044] The second bolt 270 can move relative to the second pre-folding block 230 along the extension direction of the second rotation groove 2341, thereby changing the relative position between the second bolt 270 and the second rotation groove 2341, that is, changing the relative position between the second pre-folding block 230 and the bottom plate 100, and changing the angle between the third bending surface 231 and the second bending surface 221. Specifically, when the relative position between the second pre-folding block 230 and the bottom plate 100 needs to be adjusted, the second bolt 270 can be removed first, and then the second pre-folding block 230 can be rotated. When it is rotated to a preset position, the second bolt 270 can be used to fix the second pre-folding block 230 and the bottom plate 100.

[0045] In this embodiment, the central angles of the fan-shaped structures of the first mounting surface 214 and the second mounting surface 234 are both acute angles. When the printed circuit board 10 is pre-bent using the first bending surface 211, the second bending surface 221, and the third bending surface 231, the parts of the printed circuit board 10 located on both sides of the second bending surface 221 are respectively bent downward, so as to fit the first bending surface 211 and the third bending surface 231 respectively. In this way, it is convenient for operators to pre-bend the printed circuit board 10 using the first bending portion 200, and the printed circuit board 10 is not easily damaged. The first pre-bending block 210 and the second pre-bending block 230 can be symmetrically arranged or asymmetrically arranged, and their specific arrangement can be designed according to actual needs.

[0046] Reference again Figure 2 and Figure 3The second bending portion 300 may include a third pre-folding block 310 and a fourth fixed block 320, wherein the fourth fixed block 320 is fixed to the bottom plate 100, and the third pre-folding block 310 may be installed on the bottom plate 100 or removed from the bottom plate 100. The third pre-folding block 310 has a sixth bending surface 311 and a seventh bending surface 312 in contact with the printed circuit board 10 on the side away from the bottom plate 100, and the fourth fixed block 320 has an eighth bending surface 321 in contact with the printed circuit board 10 on the side away from the bottom plate 100, wherein the sixth bending surface 311, the seventh bending surface 312 and the eighth bending surface 321 are sequentially arranged along the first direction. Moreover, the sixth bending surface 311 and the seventh bending surface 312 are not coplanar, and the seventh bending surface 312 and the eighth bending surface 321 are not coplanar.

[0047] like Figure 3 , Figure 6 and Figure 7 As shown, the third pre-folding block 310 also has two third mounting surfaces 315 respectively parallel to the first direction, the shape of the third mounting surface 315 can be regarded as a fan shape, and the second bending portion 300 has a third arc surface 314 on the side facing the bottom plate 100. At this time, the third pre-folding block 310 can rotate relative to the bottom plate 100 around an axis perpendicular to the third mounting surface 315, thereby changing the angle between the seventh bending surface 312 and the eighth bending surface 321 to meet different bending requirements of the printed circuit board 10. Exemplarily, the two third mounting surfaces 315 are respectively provided with an arc-shaped third rotation groove 3151, and the bending direction of the third rotation groove 3151 is the same as the bending direction of the third arc-shaped surface 314. The base plate 100 is also provided with a third mounting hole 130 whose two ends are respectively connected to the two third rotation grooves 3151. When the third pre-folding block 310 is installed on the base plate 100, the second bolt 270 can be used to pass through a third rotation groove 3151, the third mounting hole 130 and another third rotation groove 3151 in sequence, and then the third bolt 330 and the third mounting surface 315 can be locked using a nut, so that the third pre-folding block 310 and the base plate 100 are relatively fixed.

[0048] The third bolt 330 can move relative to the third pre-folding block 310 along the extension direction of the third rotation groove 3151, thereby changing the relative position between the third bolt 330 and the third rotation groove 3151, that is, changing the relative position between the third pre-folding block 310 and the bottom plate 100, and changing the angle between the seventh bending surface 312 and the eighth bending surface 321. Specifically, when the relative position between the third pre-folding block 310 and the bottom plate 100 needs to be adjusted, the third bolt 330 can be removed first, and then the third pre-folding block 310 can be rotated. When it is rotated to a preset position, the third bolt 330 can be used to fix the third pre-folding block 310 and the bottom plate 100.

[0049] Continue to refer Figure 3 and Figure 6 A third clamping groove 313 is provided on the side of the third pre-folding block 310 facing the fourth fixing block, and at least a portion of the fourth fixing groove is clamped in the third clamping groove 313, so that the fourth fixing block can cooperate with the third bolt 330 to limit the third pre-folding block 310 in the first direction.

[0050] In addition, the sixth bending surface 311 is also provided with an avoidance hole 3111 for avoiding the electrical components 11 on the printed circuit board 10. When the printed circuit board 10 is pre-bent using the second bending portion 300, the electrical components 11 of the printed circuit board 10 can be placed in the avoidance hole 3111. At this time, the avoidance hole 3111 can not only prevent the electrical components 11 from being damaged, but also position the printed circuit board 10 so that the printed circuit board 10 can be bent as required.

[0051] Furthermore, the eighth bending surface 321 is provided with a slot 322 for inserting the printed circuit board 10, and the width of the slot along the first direction is the same as the thickness of the printed circuit board 10. That is to say, when the printed circuit board 10 is placed in a state where its length direction is the same as the vertical direction, the printed circuit board 10 can be inserted into the slot. At this time, the third pre-folding block 310 and the two ends of the printed circuit board 10 can be used for bending.

[0052] In this embodiment, when the second bending portion 300 is used to pre-bend the printed circuit board 10, the slot 322, the sixth bending surface 311 and the seventh bending surface 312 can be used to bend the printed circuit board 10, and at this time, the printed circuit board 10 can form a two-stage bending structure. Alternatively, the sixth bending surface 311, the seventh bending surface 312 and the eighth bending surface 321 can also be used to bend the printed circuit board 10, and at this time, the printed circuit board 10 can form a three-stage bending structure.

[0053] It should be noted that the first bending portion 200 and the second bending portion 300 in this embodiment can bend different surfaces of the printed circuit board 10. In actual application, the printed circuit board 10 generally has the electrical components 11 welded to the front of the board, and the back of the board has no electrical components 11. Therefore, the back of the printed circuit board 10 can be placed on the first bending portion 200 for bending, and the front of the printed circuit board 10 can be placed on the second bending portion 300 for bending, so as to meet different bending requirements of the printed circuit board 10.

[0054] It is worth noting that in the pre-bending auxiliary jig in this embodiment, the first pre-bending block 210, the second pre-bending block 230 and the third pre-bending block 310 are used as the main body for pre-bending the printed circuit board 10, and the first fixing block 220, the second fixing block 240, the third fixing block 250 and the fourth fixing block are used to assist the first pre-bending block 210, the second pre-bending block 230 and the third pre-bending block 310 to be installed on the bottom plate 100, so that each pre-bending block can be relatively fixed to the bottom plate 100. When necessary, each fixing block can also assist the first pre-bending block 210, the second pre-bending block 230 and the third pre-bending block 310 to bend the printed circuit board 10.

[0055] In some embodiments, the first fixing block 220, the second fixing block 240, the third fixing block 250, the fourth fixing block and the bottom plate 100 may be an integrally formed structure to ensure the fixing effect between the structures. The first pre-folding block 210, the second pre-folding block 230 and the third pre-folding block 310 may be replaced according to different bending requirements, so that the pre-bending auxiliary jig in this embodiment has a wide applicability and is convenient for reducing costs.

[0056] Combined with the introduction of the pre-bending auxiliary jig in the above embodiment, as an optional implementation scheme, the pre-bending auxiliary jig in this embodiment can refer to the following steps when pre-bending the printed circuit board 10:

[0057] Step 1: Place one end of the printed circuit board 10 upright into the slot 322 , and use the sixth bending surface 311 and the seventh bending surface 312 to bend one end of the printed circuit board 10 to form an angle A;

[0058] Step 2: Take out the printed circuit board 10, rotate the plane of the printed circuit board 10 180 degrees, put the other end of the printed circuit board 10 upright into the slot 322, and use the sixth bending surface 311 and the seventh bending surface 312 to bend the other end of the printed circuit board 10 to form an angle A;

[0059] Step 3: Take out the printed circuit board 10, place the printed circuit board 10 on the second bending portion 300, use the positioning column 222 to position the printed circuit board 10, and then use the first bending surface 211, the second bending surface 221 and the third bending surface 231 to bend the printed circuit board 10 to form two continuous angles B;

[0060] Step 4: Take down the bent printed circuit board 10.

[0061] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A pre-bending auxiliary jig for assisting the bending of a printed circuit board, characterized in that: The pre-bending auxiliary fixture comprises a bottom plate and a first bending portion arranged on the bottom plate, wherein the first bending portion comprises a first pre-bending block, a first fixing block and a second pre-bending block arranged in sequence along a first direction; The first pre-folding block has a first bending surface in contact with the printed circuit board, the first fixing block has a second bending surface in contact with the printed circuit board, the second pre-folding block has a third bending surface in contact with the printed circuit board, the first bending surface is not coplanar with the second bending surface, and the second bending surface is not coplanar with the third bending surface; The first pre-folding block can rotate relative to the first fixed block to change the angle between the first bending surface and the second bending surface, and the second pre-folding block can rotate relative to the first fixed block to change the angle between the third bending surface and the second bending surface.

2. The pre-bending auxiliary fixture according to claim 1, characterized in that: The first bending portion further includes a second fixing block and a third fixing block; The second fixing block is located at a side of the first pre-folding block away from the first fixing block, and the first pre-folding block is clamped between the first fixing block and the second fixing block; The third fixing block is located at a side of the second pre-folding block away from the first fixing block, and the second pre-folding block is clamped between the first fixing block and the third fixing block.

3. The pre-bending auxiliary fixture according to claim 2, characterized in that: A first clamping groove is provided on one side of the first pre-folding block facing the second fixing block, and at least a portion of the first fixing block is clamped in the first clamping groove; A second clamping groove is provided on a side of the second pre-folding block facing the third fixing block, and at least a portion of the third fixing block is clamped in the second clamping groove.

4. The pre-bending auxiliary jig according to claim 2, characterized in that: The first pre-folding block has a first arcuate surface on one side facing the bottom plate, and the first pre-folding block also has a first mounting surface parallel to the first direction, and the first mounting surface is provided with a first arc-shaped rotation groove, and the bending direction of the first rotation groove is the same as the bending direction of the first arcuate surface, and the first pre-folding block is connected to the bottom plate by a first bolt passing through the first rotation groove, and the first bolt can move relative to the first pre-folding block along the extension direction of the first rotation groove; The second pre-folding block has a second arc-shaped surface on one side surface facing the base plate. The second pre-folding block also has a second mounting surface parallel to the first direction. The second mounting surface is provided with a second arc-shaped rotation groove. The bending direction of the second rotation groove is the same as the bending direction of the second arc-shaped surface. The second pre-folding block is connected to the base plate by a second bolt passing through the second rotation groove, and the second bolt can move relative to the second pre-folding block along the extension direction of the second rotation groove.

5. The pre-bending auxiliary jig according to claim 2, characterized in that: The second fixing block has a fourth bending surface in contact with the printed circuit board, and the fourth bending surface is not coplanar with the first bending surface; The third fixing block has a fifth bending surface in contact with the printed circuit board, and the fifth bending surface is not coplanar with the third bending surface.

6. The pre-bending auxiliary jig according to claim 1, characterized in that: The second bending surface is provided with a positioning column, and the positioning column is used to cooperate with a positioning hole provided on the printed circuit board to position the printed circuit board and the first fixing block.

7. The pre-bending auxiliary jig according to claim 1, characterized in that: It also includes a second bending portion disposed on the bottom plate, wherein the second bending portion includes a third pre-folded block; The third pre-folding block has a sixth bending surface and a seventh bending surface in contact with the printed circuit board, the sixth bending surface and the seventh bending surface are arranged along the first direction, and the sixth bending surface and the seventh bending surface are not coplanar; The sixth bending surface is provided with avoidance holes for avoiding electrical components of the printed circuit board.

8. The pre-bending auxiliary jig according to claim 7, characterized in that: The third pre-folding block has a third curved surface on the side facing the base plate. The third pre-folding block also has a third mounting surface parallel to the first direction. The third mounting surface is provided with a third arc-shaped rotation groove. The bending direction of the third rotation groove is the same as the bending direction of the third curved surface. The third pre-folding block is connected to the base plate by a third bolt passing through the third rotation groove, and the third bolt can move relative to the third pre-folding block along the extension direction of the third rotation groove.

9. The pre-bending auxiliary jig according to claim 7, characterized in that: The second bending portion further includes a fourth fixing block, and the fourth fixing block and the third pre-folding block are arranged along the first direction; A third clamping groove is provided on a side of the third pre-folding block facing the fourth fixing block, and at least a portion of the fourth fixing block is clamped in the third clamping groove.

10. The pre-bending auxiliary jig according to claim 9, characterized in that: The fourth fixing block is provided with a slot for inserting the printed circuit board, and the width of the slot along the first direction is the same as the thickness of the printed circuit board.

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