A harness welding jig

Abstract

The utility model relates to a kind of harness welding jigs, it includes: mounting seat, the mounting seat is equipped with the board positioning component for positioning supporting circuit board;At least one line pressing mechanism, setting in the front and / or back of the mounting seat;The line pressing mechanism includes line pressing assembly and with the locking assembly corresponding to line pressing assembly;The line pressing assembly includes swing arm and line pressing cover, the swing arm is integrally formed with line pressing cover or fixed assembly;The swing arm is movably connected with mounting seat to make line pressing cover open or close;Several line pressing grooves are equipped on the line pressing cover, when the line pressing cover is closed, the line pressing groove is separated and clamps harness with circuit board cooperation;When the line pressing cover is closed, the locking assembly restricts line pressing assembly activity.The utility model can simply and conveniently position the circuit board to be welded, and also arrange and position the harness to be welded, so as to benefit the automatic welding of harness and circuit board.

Description

Technical Field

[0001] This utility model relates to the field of wire harness processing technology, and in particular to a wire harness welding fixture. Background Technology

[0002] Most wire harnesses connect to connectors via crimping or soldering. However, some connectors do not use terminals but instead connect wires via gold fingers on the circuit board. In these cases, soldering is the preferred method. With advancements in automation technology, wire harness soldering is also moving towards automation. Compared to manual soldering, automated soldering offers more consistent soldering quality, especially in high-volume soldering applications.

[0003] When there are many wires to be soldered, it may be necessary to set gold fingers on both sides of the circuit board, and some may even require multiple rows of gold fingers to meet the connection requirements. In this case, the wires of different rows of gold fingers are of different lengths and are prone to interference. In addition, the wires of the wire harness have a certain degree of flexibility and are not easy to control. Therefore, it is still quite difficult to automatically solder wire harnesses on circuit boards with multiple rows of gold fingers. Utility Model Content

[0004] The purpose of this utility model is to provide a wire harness welding fixture, which can easily and conveniently position the circuit board to be welded, and at the same time organize and position the wire harness to be welded, thereby facilitating the automatic welding of the wire harness and the circuit board.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A wire harness welding fixture, comprising: Mounting base, wherein the mounting base is provided with a board positioning assembly for positioning and supporting the circuit board; At least one wire pressing mechanism is disposed on the front and / or back of the mounting base; the wire pressing mechanism includes a wire pressing assembly and a locking assembly corresponding to the wire pressing assembly; The wire pressing assembly includes a swing arm and a wire pressing cover. The swing arm and the wire pressing cover are integrally formed or fixedly assembled. The swing arm is movably connected to the mounting base to open or close the wire pressing cover. The wire pressing cover is provided with a plurality of wire pressing grooves. When the wire pressing cover is closed, the wire pressing grooves cooperate with the circuit board to separate and clamp the wire harness. When the pressure cap is closed, the locking component restricts the movement of the pressure assembly.

[0006] After the above setup, the circuit board to be soldered is positioned and supported by the mounting base and board positioning components. The wire clamping mechanism separates and presses the wire harness onto the circuit board, and manual wire arrangement ensures accurate alignment of the wires with the corresponding gold fingers on the circuit board, facilitating automated soldering. The wire clamping mechanism also helps to clamp the circuit board, ensuring its stability. After manual wire arrangement, gold fingers in the same row can be soldered to their corresponding wires simultaneously (automatically soldered by a soldering machine), improving soldering efficiency and ensuring soldering quality. Furthermore, this invention has a simple structure and is convenient and quick to operate.

[0007] Preferably, multiple wire pressing mechanisms are provided, and when the wire pressing covers of the multiple wire pressing mechanisms are closed, they are spaced apart along the width direction of the mounting base. With this arrangement, different wire pressing components can be selected for the separation, arrangement, and pressing of the wire harness, which can fix the wires of the wire harness near the corresponding gold fingers, facilitating the soldering of the wire harness to different rows of gold fingers on the circuit board.

[0008] Preferably, the mounting base has a support groove for supporting the circuit board or wire connector and a clearance opening for avoiding the soldering area of ​​the circuit board; the board positioning assembly includes a positioning pin and two positioning arms. The positioning pin is detachably connected to the bottom of the support groove and is used to engage with positioning holes on the circuit board; the positioning arms are respectively placed on both sides of the support groove, one end of the positioning arm is detachably connected to the mounting base, and the other end of the positioning arm has a positioning step that extends into the clearance opening. The corresponding positioning steps of the two positioning arms cooperate to support and position the side edge of the soldering area of ​​the circuit board. The clearance opening facilitates double-sided soldering of the circuit board. Positioning the circuit board with the positioning pin and positioning arms is simple and convenient, and the positioning arms only have positioning steps contacting the circuit board, which does not interfere with soldering, and can also provide support force for the circuit board during soldering.

[0009] Preferably, the positioning arm includes a support plate and a positioning plate, which are stacked and secured to the mounting base with bolts. Both the support plate and the positioning plate have through holes for the bolts to pass through. The mounting base has positioning bosses corresponding to the positioning arms, and both the support plate and the positioning plate have insertion holes for engaging with the positioning bosses. The ends of the support plate and the ends of the positioning plates are offset to form the positioning steps. This type of positioning arm structure is simple and facilitates replacement and maintenance.

[0010] Preferably, both the support plate and the positioning plate are provided with expansion joints corresponding to the through holes and insertion holes. The expansion joints penetrate the side edge of the corresponding support plate away from the support groove, and the expansion joints penetrate the side edge of the corresponding positioning plate away from the support groove. The through holes and insertion holes are all connected to the corresponding expansion joints. The expansion joints can effectively accommodate circuit board size errors.

[0011] Preferably, the support groove has an elastic element on its groove wall perpendicular to the positioning arm. The elastic element is used to abut the end of the circuit board away from the soldering area. By abutting the end of the circuit board away from the soldering area with the elastic element, a good buffering and limiting effect can be achieved.

[0012] Preferably, the mounting base has a slot that communicates with a support groove. An insert is detachably connected to the slot, and the elastic element is connected to the insert. The bottom of the support groove has a first locking screw, at least one positioning hole adapted to a positioning pin, and at least one first locking hole adapted to the first locking screw. Each first locking hole corresponds to at least one positioning hole, and the first locking hole communicates with the corresponding positioning hole. When the positioning pin is inserted into any positioning hole, the first locking screw is threadedly connected to the first locking hole corresponding to that positioning hole, and the end of the first locking screw presses against the positioning pin to prevent the positioning pin from disengaging from the positioning hole. The insert facilitates the installation and replacement of the elastic element. Furthermore, by replacing inserts of different thicknesses and placing the positioning pin in different positioning holes, various circuit boards can be adapted, improving the versatility of the fixture.

[0013] Preferably, one end of the swing arm is rotatably connected to the mounting base via a rotating shaft; this connection is convenient and simple.

[0014] The locking assembly includes a locking block and a return spring. The lower end of the locking block is rotatably connected to the mounting base, and one side of the upper end of the locking block has a stop portion, while the other side of the upper end of the locking block has a blocking portion. The stop portion has a guide surface, and the lower part of the swing arm has an inclined surface that mates with the guide surface. One end of the return spring is connected to the mounting base, and the other end of the return spring is connected to the blocking portion. When the swing arm rotates along the direction of pressing the circuit board, the swing arm presses against the guide surface to push the locking block to rotate and avoid the swing arm. When the wire pressing cover is closed, the locking block resets under the force of the return spring and locks the swing arm. With this configuration, no operation of the locking assembly is required during wire pressing. After welding is completed, the wire pressing assembly can be unlocked simply by pressing the blocking portion. The locking assembly has a simple structure and is easy to operate.

[0015] Preferably, the end of the swing arm connected to the wire pressure cover is provided with a slot, and one end of the wire pressure cover is installed in the slot and locked; this configuration allows the wire pressure cover to be installed firmly and can be easily replaced.

[0016] The mounting base has swing grooves and mounting grooves corresponding to the swing arms. The width of the swing groove is adapted to the width of the swing arm. The mounting groove and the swing groove are perpendicular to each other and intersect and communicate. The rotating shaft is placed in the mounting groove. The mounting base has second locking holes at both ends near the mounting groove, and these second locking holes communicate with the mounting groove. Second locking screws are threaded into the second locking holes, and the ends of the second locking screws press against the rotating shaft to prevent it from disengaging from the mounting groove. The swing grooves help ensure the stability of the swing direction of the swing arm and facilitate its installation. The installation method of the rotating shaft is simple and easy to maintain.

[0017] Preferably, the wire pressing mechanism further includes magnetic suction components corresponding to the wire pressing assemblies. These magnetic suction components are connected to the mounting base. When the wire pressing cover is opened and moved away from the circuit board, the magnetic suction components can magnetically engage with the wire pressing assemblies to restrict their movement. By providing magnetic suction components, a certain degree of locking can be maintained even when the wire pressing assemblies are open, to avoid interfering with personnel operation or the movement of fixtures.

[0018] This utility model has the following beneficial effects: 1. This utility model uses a mounting base and board positioning components to position and support the circuit board to be soldered. A wire clamping mechanism separates and presses the wire harness onto the circuit board, and manual wire arrangement ensures accurate alignment of the wires with the corresponding gold fingers on the circuit board, facilitating automated soldering. The wire clamping mechanism also helps to clamp the circuit board, ensuring its stability. After manual wire arrangement, gold fingers in the same row can be soldered to their corresponding wires simultaneously (automatic soldering via a soldering machine), improving soldering efficiency and ensuring soldering quality. Furthermore, this utility model has a simple structure and is convenient and quick to operate.

[0019] 2. Multiple wire clamping mechanisms are provided, and different wire clamping components can be selected to separate, organize and clamp the wire harness. This allows the wires of the wire harness to be fixed closer to the corresponding gold fingers, which is beneficial for soldering the wire harness to different rows of gold fingers on the circuit board. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram from another perspective of the present invention.

[0022] Figure 3 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0023] Figure 4 This is a schematic diagram of the mounting bracket.

[0024] Figure 5This is a schematic diagram of the positioning arm.

[0025] Figure 6 This is an exploded view of the positioning arm.

[0026] Figure 7 This is a schematic diagram of the insert and the elastic element.

[0027] Figure 8 This is a schematic diagram of the wire clamping assembly.

[0028] Figure 9 for Figure 1 Enlarged schematic diagram of section B.

[0029] Figure 10 This is a schematic diagram of the locking block.

[0030] Figure 11 This is a schematic diagram showing the swing arm in the open position.

[0031] Figure 12 A three-dimensional cross-sectional view of the swing arm in the open position.

[0032] Figure 13 This is a three-dimensional cross-sectional view of the swing arm rotating to contact the locking assembly.

[0033] Figure 14 This is a three-dimensional cross-sectional view of the locking state of the pressure wire assembly when the swing arm is rotated to its lowest position.

[0034] Figure 15 This is a schematic diagram of the usage state of this utility model.

[0035] Figure 16 for Figure 15 Enlarged diagram of section C.

[0036] Figure 17 This is a schematic diagram of a wire connector with a circuit board mounted on it.

[0037] Explanation of symbols for main components: Mounting base 10, support groove 11, first locking screw 111, positioning insertion hole 112, first locking hole 113, clearance opening 12, positioning pin 13, positioning arm 14, positioning step 141, support plate 142, positioning plate 143, through hole 144, insertion hole 145, expansion joint 146, positioning boss 15, elastic element 161, slot 162, insert 163, swing groove 171, mounting groove 172, rotating shaft 173, second locking hole 174, second locking screw 175, spring insertion hole 18; Swing arm 21, slot 211, inclined surface 212, wire pressing cover 22, wire pressing groove 221, locking block 23, stop part 231, blocking part 232, guide surface 233, return spring 24, magnetic suction part 25. Circuit board 31, insulating shell 32, positioning hole 33, gold finger 34; Wire harness 40. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] like Figures 1-16 As shown, this utility model discloses a wire harness soldering fixture, which includes a mounting base 10 and at least one wire clamping mechanism. A board positioning assembly for mounting a circuit board 31 is provided on the mounting base 10. Figure 17 As shown, in this embodiment, an insulating shell 32 is inserted into the outside of the circuit board 31, and the soldering area of ​​the circuit board 31 (i.e., the area on the circuit board 31 where the gold fingers 34 to be soldered to the wire harness are located) extends out of the insulating shell 32. In addition, generally, the circuit board 31 is provided with positioning holes 33 to facilitate positioning in various automated production processes. In this case, the insulating shell 32 exposes these positioning holes 33. The circuit board 31 with the insulating shell 32 inserted is aligned with the corresponding wire harness using the welding fixture of this invention to facilitate subsequent automated soldering.

[0040] The mounting base 10 is provided with a support groove 11 for the non-soldering area of ​​the circuit board 31 and a clearance opening 12 for avoiding the soldering area of ​​the circuit board 31. The insulating shell 32 of the wire connector abuts against the bottom of the support groove 11. The clearance opening 12 facilitates double-sided soldering of the circuit board 31. To improve compatibility, it is preferable that the groove walls on both sides of the support groove 11 do not contact the circuit board 31 or the insulating shell 32.

[0041] like Figure 3 As shown, the board positioning assembly includes a positioning pin 13 and two positioning arms 14. The positioning pin 13 is detachably connected to the bottom of the support groove 11. The positioning pin 13 is used to engage with the positioning hole 33 on the circuit board 31 to achieve rapid initial positioning of the circuit board 31. In this case, the positioning pin 13 is multi-segmented, so that the positioning pin 13 can also provide support for the circuit board 31.

[0042] Due to the wiring layout of the circuit board 31, the position of the positioning hole 33 may change. To achieve a certain degree of compatibility, the installation method of the positioning pin 13 is designed as follows: A first locking screw 111, at least one positioning insertion hole 112 adapted to the positioning pin 13, and at least one first locking hole 113 adapted to the first locking screw 111 are provided at the bottom of the support groove 11. Each first locking hole 113 corresponds to at least one positioning insertion hole 112, and the first locking hole 113 communicates with the corresponding positioning insertion hole 112. When the positioning pin 13 is inserted into any positioning insertion hole 112, the first locking screw 111 is threadedly connected to the first locking hole 113 corresponding to the positioning insertion hole 112. After tightening the first locking screw 111, the end of the first locking screw 111 can press against the positioning pin 13 to prevent the positioning pin 13 from disengaging from the positioning insertion hole 112. By placing the positioning pin 13 in different positioning holes 112, various circuit boards 31 can be adapted, which helps to improve the versatility of the fixture.

[0043] Combination Figure 4-6 As shown, positioning arms 14 are respectively placed on both sides of the support groove 11. One end of the positioning arm 14 is detachably connected to the mounting base 10, and the other end of the positioning arm 14 is provided with a positioning step 141, which extends into the clearance opening 12. The corresponding positioning steps 141 of the two positioning arms 14 cooperate with each other to support and position the side edge of the welding area of ​​the circuit board 31. The circuit board 31 is positioned by the positioning pin 13 and the positioning arm 14, which is simple and convenient to operate. Moreover, only the positioning step 141 of the positioning arm 14 contacts the circuit board 31, which will not interfere with the welding, and can also provide support force for the circuit board 31 during welding.

[0044] To ensure the positioning arm 14 is compatible with the dimensional tolerances of the circuit board 31, it is designed as follows: The positioning arm 14 includes a support piece 142 and a positioning piece 143. Both the support piece 142 and the positioning piece 143 have through holes 144 for bolts to pass through. The support piece 142 and the positioning piece 143 are stacked together, and bolts are threaded through the through holes 144 on both pieces to the mounting base 10, thus securing the positioning piece 143 and the support piece 142 to the mounting base 10. For ease of installation, the mounting base 10 has positioning bosses 15 corresponding to the positioning arms 14, and both the support piece 142 and the positioning piece 143 have insertion holes 145 for engaging with the positioning bosses 15. The ends of the support piece 142 and the positioning piece 143 are misaligned to form the positioning steps 141. In addition, both the support plate 142 and the positioning plate 143 are provided with deformation grooves 146 corresponding to the through holes 144 and the insertion holes 145. The deformation grooves 146 penetrate the side edge of the corresponding support plate 142 away from the support groove 11. Correspondingly, the deformation grooves 146 penetrate the side edge of the corresponding positioning plate 143 away from the support groove 11. The through holes 144 and the insertion holes 145 are connected to the corresponding deformation grooves 146.

[0045] like Figure 1 , 3 As shown in Figure 7, an elastic element 161 is provided on the groove wall of the support groove 11 perpendicular to the positioning arm 14. The elastic element 161 is used to abut against the end of the circuit board 31 or wire connector away from the soldering area. The elastic element 161 can be a rubber pad. The elastic element 161 can play a good role in buffering and limiting, and can also prevent the positioning pin 13 from being impacted.

[0046] like Figure 1 , 3 As shown in Figures 4 and 7, to improve the compatibility of the fixture and accommodate more specifications of circuit boards 31 or wire connectors, a slot 162 is provided on the mounting base 10, and the slot 162 connects to the support groove 11. An insert 163 is detachably connected to the slot 162. The insert 163 can be simply inserted into the slot 162 or it can be locked in place by bolts. Then, an elastic element 161 is connected to the insert 163. By replacing inserts 163 of different thicknesses or removing inserts 163, circuit boards 31 or wire connectors of different lengths can be made compatible.

[0047] The wire clamping mechanism is located on the front and / or back of the mounting base 10. The wire clamping mechanism on the front of the mounting base 10 is used to clamp the wire harness 40 onto the front of the circuit board 31, and the wire clamping mechanism on the back of the mounting base 10 is used to clamp the wire harness 40 onto the back of the circuit board 31. The specific arrangement can be adjusted according to actual needs. In this case, the wire clamping mechanism is provided on both the front and back of the mounting base 10. Furthermore, four sets of wire clamping mechanisms are provided, two sets on the front and two sets on the back of the mounting base 10, as follows: Figure 1 and Figure 2 As shown. The number of wire clamping mechanisms is adjusted according to the number of rows of gold fingers 34 on the circuit board 31. Generally speaking, it is best to have one wire clamping mechanism for each row of gold fingers 34. By setting wire clamping mechanisms on both the front and back of the mounting base 10, the wire harness 40 is clamped onto the circuit board 31 by these two sets of wire clamping mechanisms, which can also play an auxiliary role in positioning the circuit board 31.

[0048] Specifically, the wire clamping mechanism includes a wire clamping assembly and a corresponding locking assembly. The wire clamping assembly is movably connected to the mounting base 10, such as... Figure 8 As shown, the wire pressing assembly includes a swing arm 21 and a wire pressing cover 22. One end of the swing arm 21 is rotatably connected to the mounting base 10, and the other end of the swing arm 21 is provided with a slot 211. To ensure the swing stability of the swing arm 21 and facilitate the replacement and subsequent maintenance of the swing arm 21, the following design was implemented: Figure 9 As shown, the mounting base 10 has swing grooves 171 and mounting grooves 172 corresponding to the swing arms 21. The width of the swing groove 171 is adapted to the width of the swing arm 21. The mounting groove 172 is perpendicular to the swing groove 171 and intersects with it. A rotating shaft 173 is placed in the mounting groove 172. Second locking holes 174 are provided at both ends of the mounting base 10 near the mounting grooves 172, and the second locking holes 174 are connected to the mounting grooves 172. Second locking screws 175 are threaded into the second locking holes 174. Tightening the second locking screws 175 allows the end of the second locking screw 175 to press against the rotating shaft 173, preventing the rotating shaft 173 from disengaging from the mounting groove 172. The swing arm 21 is rotatably connected to the rotating shaft 173.

[0049] like Figure 8 As shown, one end of the wire clamping cover 22 is anti-rotatingly engaged with the slot 211 and secured with bolts. Alternatively, the wire clamping cover 22 can be integrally formed with the swing arm 21. Several spaced wire clamping grooves 221 are provided at the end of the wire clamping cover 22 away from the slot 211. When the swing arm 21 rotates along the pivot 173, the wire clamping cover 22 can move to the clearance opening 12 position, allowing it to approach (at a very small distance) or press against the soldering area of ​​the circuit board 31. Simultaneously, the wire clamping grooves 221, in conjunction with the circuit board 31, can separate and clamp the wire harness 40 to be soldered or its conductors. This state of the wire clamping cover 22 is defined as the closed state. Preferably, when the wire clamping cover 22 is in the closed state, it presses against the circuit board 31, ensuring reliable clamping of the wire harness 40 and effective support for the circuit board 31. When the wire clamping cover 22 is away from the circuit board 31, it is in the open state. In the wire pressing mechanism located on the same side of the mounting base 10, when all the wire pressing grooves 221 press against the circuit board 31, the wire pressing covers 22 are spaced apart in the width direction of the mounting base 10, so that each wire pressing cover 22 can correspond to different positions of the circuit board 31 to accommodate different rows of gold fingers 34 on the soldering area of ​​the circuit board 31.

[0050] like Figure 10-14 As shown, the locking assembly is used to lock the pressure wire assembly, keeping it in a closed state. Specifically, the locking assembly includes a locking block 23 and a return spring 24. The lower end of the locking block 23 is rotatably connected to the mounting base 10. One side of the upper end of the locking block 23 has a stop portion 231, and the other side of the upper end of the locking block 23 has a blocking portion 232. A guide surface 233 is provided on the stop portion 231. The guide surface 233 is an inclined arc surface. An inclined surface 212 that cooperates with the guide surface 233 is provided below the swing arm 21. One end of the return spring 24 is connected to the mounting base 10, and the other end of the return spring 24 is connected to the blocking portion 232. Spring insertion holes 18 can be provided on both the mounting base 10 and the blocking portion 232, so that the end of the return spring 24 can be inserted into the spring insertion hole 18 to achieve connection, and the return spring 24 is not easily dislodged or lost.

[0051] The process of using this utility model fixture is described in detail below: 1. For example Figure 11 As shown, first open the swing arm 21, that is, rotate the swing arm 21 to the top. At this time, the circuit board 31 can be installed on the board positioning assembly of the mounting base 10.

[0052] 2. For example Figure 12 , 13 As shown, the swing arm 21 rotates downwards, and the wire clamping cover 22 also rotates downwards under the influence of the swing arm 21 (i.e., rotates in the direction of approaching or pressing against the circuit board 31). Figure 13 As shown, the swing arm 21 rotates to press against the guide surface 233, the inclined surface 212 contacts the guide surface 233, and pushes the locking block 23 to rotate outward by a small angle. At the same time as rotating, the return spring 24 is compressed, the locking block 23 avoids the swing arm 21, and the swing arm 21 can continue to rotate downward.

[0053] 3. For example Figure 14 As shown, when the swing arm 21 rotates to the bottom, the wire pressing cover 22 presses against the circuit board. At this time, the swing arm 21 no longer presses against the guide surface 233, and the locking block 23 loses the external force and resets. At this time, the stop part 231 cooperates with the mounting base 10 (the bottom of the swing groove 171) to lock the swing arm 21, thereby locking the wire pressing assembly.

[0054] 4. After the welding is completed, simply press the blocking part 232 to make the stop part 231 move away from the swing arm 21, thereby unlocking the wire pressing assembly. The swing arm 21 can then rotate upwards to remove the welded circuit board 31. The operation is convenient.

[0055] To prevent interference when the wire pressing assembly is not pressing wires, magnetic suction components 25 are provided, each corresponding to a wire pressing assembly. These magnetic suction components 25 are connected to the mounting base 10. When the swing arm 21 rotates backward, the wire pressing cover 22 moves away from the circuit board 31, and the swing arm 21 rotates to its limit. At this point, the magnetic suction component 25 attracts the swing arm 21, restricting the free movement of the wire pressing assembly. The magnetic suction component 25 can be a magnet, and the swing arm 21 can be made of a metal that can be attracted by a magnet. Alternatively, a metal block that can be attracted by a magnet can be fixed to the swing arm 21.

[0056] like Figure 15 As shown, in use, the wire clamping cover 22 at the very front (or the edge closest to the circuit board 31) first clamps the wire harness 40. This part of the wire harness 40 is first soldered to the gold fingers 34 closest to the front edge of the circuit board 31. Then the wire clamping cover 22 at the very front is released. The wire clamping covers 22 of the second row clamp the wire harness 40 soldered to the gold fingers 34 of the second row, and so on.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire harness welding fixture, characterized in that, include: Mounting base, wherein the mounting base is provided with a board positioning assembly for positioning and supporting the circuit board; At least one wire pressing mechanism is disposed on the front and / or back of the mounting base; the wire pressing mechanism includes a wire pressing assembly and a locking assembly corresponding to the wire pressing assembly; The wire pressing assembly includes a swing arm and a wire pressing cover. The swing arm and the wire pressing cover are integrally formed or fixedly assembled. The swing arm is movably connected to the mounting base to open or close the wire pressing cover. The wire pressing cover is provided with a plurality of wire pressing grooves. When the wire pressing cover is closed, the wire pressing grooves cooperate with the circuit board to separate and clamp the wire harness. When the pressure cap is closed, the locking component restricts the movement of the pressure assembly.

2. The wire harness welding fixture according to claim 1, characterized in that: Multiple wire pressing mechanisms are provided, and when the wire pressing covers of the multiple wire pressing mechanisms are closed, they are spaced apart along the width direction of the mounting base.

3. The wire harness welding fixture according to claim 1, characterized in that: The mounting base is provided with a support groove for supporting the circuit board and a clearance opening for avoiding the soldering area of ​​the circuit board; the board positioning assembly includes a positioning pin and two positioning arms. The positioning pin is detachably connected to the bottom of the support groove and is used to engage with the positioning holes on the circuit board; the positioning arms are respectively placed on both sides of the support groove. One end of the positioning arm is detachably connected to the mounting base, and the other end of the positioning arm is provided with a positioning step, which extends into the clearance opening. The positioning steps of the two positioning arms cooperate with each other to support and position the side edge of the soldering area of ​​the circuit board.

4. The wire harness welding fixture according to claim 3, characterized in that: The positioning arm includes a support plate and a positioning plate. The support plate and the positioning plate are stacked and locked onto the mounting base by bolts. Both the support plate and the positioning plate have through holes for the bolts to pass through. The mounting base has positioning bosses that correspond one-to-one with the positioning arms. Both the support plate and the positioning plate have insertion holes that engage with the positioning bosses. The ends of the support plate and the ends of the positioning plates are misaligned to form the positioning steps.

5. The wire harness welding fixture according to claim 4, characterized in that: Both the support plate and the positioning plate are provided with deformation joints that correspond one-to-one with the through holes and the insertion holes. The deformation joints penetrate the side edge of the corresponding support plate away from the support groove, and the deformation joints penetrate the side edge of the corresponding positioning plate away from the support groove. The through holes and the insertion holes are all connected to the corresponding deformation joints.

6. The wire harness welding fixture according to claim 3, characterized in that: The support groove is provided with an elastic element on the groove wall perpendicular to the positioning arm. The elastic element is used to abut the end of the circuit board away from the soldering area.

7. The wire harness welding fixture according to claim 6, characterized in that: The mounting base has a slot that connects to a support groove. An insert is detachably connected to the slot, and the elastic element is connected to the insert. The bottom of the support groove has a first locking screw, at least one positioning hole that matches the positioning pin, and at least one first locking hole that matches the first locking screw. Each first locking hole corresponds to at least one positioning hole, and the first locking hole communicates with the corresponding positioning hole. When the positioning pin is inserted into any positioning hole, the first locking screw is threadedly connected to the first locking hole corresponding to that positioning hole, and the end of the first locking screw presses against the positioning pin to prevent the positioning pin from disengaging from the positioning hole.

8. The wire harness welding fixture according to claim 1, characterized in that: One end of the swing arm is rotatably connected to the mounting base via a rotating shaft; The locking assembly includes a locking block and a return spring; The lower end of the locking block is rotatably connected to the mounting base. One side of the upper end of the locking block is provided with a stop portion, and the other side of the upper end of the locking block is provided with a blocking portion. The stop portion is provided with a guide surface, and the lower part of the swing arm is provided with an inclined surface that cooperates with the guide surface. One end of the return spring is connected to the mounting base, and the other end of the return spring is connected to the blocking portion. When the swing arm rotates in the direction of pressing the circuit board, the swing arm presses against the guide surface to push the locking block to rotate and avoid the swing arm. When the pressure cover is closed, the locking block is reset under the force of the return spring and locks the swing arm.

9. The wire harness welding fixture according to claim 8, characterized in that: The end of the swing arm connected to the wire pressing cover is provided with a slot, and one end of the wire pressing cover is installed in the slot and locked. The mounting base is provided with swing grooves and mounting grooves that correspond one-to-one with the swing arms. The width of the swing groove is adapted to the width of the swing arm. The mounting groove and the swing groove are perpendicular to each other and intersecting and connected. The rotating shaft is placed in the mounting groove. The mounting base is provided with second locking holes at both ends near the mounting groove. The second locking holes are connected to the mounting groove. The second locking holes are threaded with second locking screws. The end of the second locking screw presses against the rotating shaft to prevent the rotating shaft from disengaging from the mounting groove.

10. The wire harness welding fixture according to claim 1, characterized in that: The wire pressing mechanism also includes magnetic components that correspond one-to-one with the wire pressing assembly. The magnetic components are connected to the mounting base. When the wire pressing cover is opened and moved away from the circuit board, the magnetic components can magnetically engage with the wire pressing assembly to restrict the movement of the wire pressing assembly.

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