Mounting jig for wave-soldering circuit board

Abstract

The utility model discloses a mounting jig for a wave-soldering circuit board, which comprises a base and a positioning part, at least one hollow part is arranged on the base, a bearing bulge is arranged on the side wall of the hollow part, and when a proper circuit board is accommodated in the hollow part, a pressing part of the positioning part can be propped against the circuit board so as to press the circuit board. The circuit board is clamped in the hollowed-out part, the side wall of the hollowed-out part is used for limiting the circuit board in the transverse direction, the bearing protrusion supports the circuit board upwards so as to limit the circuit board in the longitudinal direction, and then the pressing part is rotated to abut against the circuit board, so that the circuit board is positioned and fixed in the transverse direction and the longitudinal direction. The circuit board is ensured not to deform due to high temperature when passing through a crest welder, the circuit board can be taken down by rotating the pressing part after welding is completed, the circuit board is very convenient to fix and loosen, and when the thickness of the circuit board is increased, the pressing part can still abut against the circuit board due to the existence of the spring, so that the circuit board is prevented from being damaged. The fixing device is suitable for fixing circuit boards with various thicknesses.

Description

Technical Field

[0001] The utility model relates to a mounting fixture for a wave soldering circuit board. Background Art

[0002] Electronic components on circuit boards are usually soldered by wave soldering. Before soldering, the circuit board needs to be placed on a wave soldering jig. The wave soldering jig with the circuit board is fed into the wave soldering machine for soldering via a conveyor belt. However, large circuit boards will be deformed due to high temperature when passing through the wave soldering machine, which will cause the components to be skewed after soldering, affecting production quality and production efficiency. In view of this, the wave soldering jig of the prior art usually uses bolts to fix the circuit board. The operator needs to tighten and adjust them one by one, which is inefficient. Moreover, the existing wave soldering jig is usually only suitable for specific types of circuit boards. When the thickness of circuit boards of different types increases, it is impossible to adaptably fix them. Usually, different jigs need to be matched for circuit boards of different thicknesses, which not only increases the cost, but also when jigs suitable for circuit boards of different thicknesses are stacked together, the operator often has to spend a lot of time matching the appropriate jig, resulting in low efficiency of wave soldering. Especially when circuit boards of different thicknesses need to be frequently replaced for wave soldering, the impact is more obvious.

[0003] Therefore, it is necessary to develop a mounting fixture for wave soldering circuit boards that can quickly fix circuit boards and is applicable to circuit boards of various thicknesses. Utility Model Content

[0004] The utility model aims to provide a mounting fixture for wave soldering circuit boards.

[0005] The utility model provides a mounting fixture for wave soldering circuit boards, comprising:

[0006] A base, wherein the base is provided with at least one hollow portion for accommodating the circuit board, and a bearing protrusion is provided on a side wall of the hollow portion; and

[0007] The positioning part includes an adjusting bolt, a spring and a clamping part. The adjusting bolt is screwed on the base, the spring is sleeved on the adjusting bolt, the clamping part is sleeved on the adjusting bolt and is rotatably connected with the adjusting bolt, one end of the spring presses on the clamping part, and the other end of the spring presses on the nut of the adjusting bolt.

[0008] When a suitable circuit board is accommodated in the hollow portion, the pressing portion can press against the circuit board to press the circuit board.

[0009] The mounting fixture of the utility model, when it is necessary to perform wave soldering on the circuit board, the circuit board is clamped in the hollow part on the base, the side wall of the hollow part is used to limit the circuit board in the horizontal direction, the bearing protrusion holds the edge of the circuit board upward to limit it in the longitudinal direction, and then the pressing part is rotated to make the pressing part press against the circuit board, and under the elastic force of the spring, the pressing part can press the circuit board against the base, so that the circuit board is positioned and fixed in the horizontal and longitudinal directions, ensuring that the circuit board will not be deformed due to high temperature when passing through the wave soldering machine, and after the welding is completed, the circuit board can be removed by rotating the pressing part, and the fixing and loosening of the circuit board are very convenient. In addition, when the thickness of the circuit board becomes larger, due to the presence of the spring, the pressing part can still press against the circuit board, so that it can be suitable for the fixing of circuit boards of various thicknesses. When circuit boards of the same size and different thicknesses need to be replaced for wave soldering, it is no longer necessary to frequently replace the mounting fixture, and the efficiency of wave soldering can be improved.

[0010] Preferably, the bearing protrusion includes a first protrusion and a second protrusion, the hollow portion is in a rectangular shape, the number of first protrusions is two, and the two first protrusions are respectively arranged on two opposite short side walls of the hollow portion, and the number of second protrusions is multiple, and the multiple second protrusions are arranged on two opposite long side walls of the hollow portion.

[0011] Therefore, the two first protrusions and the plurality of second protrusions can jointly hold up the edge of the circuit board to limit its longitudinal position, thereby ensuring that the circuit board is stably clamped in the hollow portion.

[0012] Preferably, a first slot and a second slot are provided on two opposite short side walls of the hollow portion, the two first slots are arranged at the same height, the two second slots are arranged at the same height, the first slot is located above the second slot, and the two first protrusions are respectively inserted in the two first slots, and a plurality of third slots and a fourth slot are provided on two opposite long side walls of the hollow portion, the plurality of third slots are arranged at the same height, the plurality of fourth slots are arranged at the same height, the third slot is located above the fourth slot, the number of the third slots, the fourth slots and the second protrusions are the same, and the plurality of second protrusions are respectively inserted in one third slot, the first slot and the third slot are arranged at the same height, and the second slot and the fourth slot are arranged at the same height.

[0013] Therefore, when it is necessary to replace a circuit board of the same size (length and width) with a relatively large thickness change, the height of the first protrusion on the side wall of the hollow part can be adjusted, and it can be inserted in the first slot or in the second slot. At the same time, the height of the second protrusion on the side wall of the hollow part can be adjusted, and it can be inserted in the third slot or in the fourth slot. As long as the adjusted first protrusion and second protrusion are arranged at the same height, it can be suitable for the fixation of circuit boards of more thicknesses.

[0014] Preferably, it further comprises a plurality of positioning protrusions, wherein the positioning protrusions are arranged on the base and parts of the positioning protrusions are located above the hollow portion.

[0015] Therefore, when the circuit board is inserted into the hollow part on the base, the positioning protrusion can be inserted into the slot on the circuit board. When installing the circuit board, it is necessary to align the slot on the circuit board with the positioning protrusion and then insert it into the hollow part. The positioning protrusion can further limit the circuit board in the horizontal direction.

[0016] Preferably, a component accommodating groove is provided on the base, the component accommodating groove is located at the edge of the hollow portion, and the end of the component accommodating groove facing the hollow portion is open.

[0017] Therefore, according to the requirements of installing the circuit board on the product, some components on the circuit board need to be bent and pressed (such as LEDs). When the circuit board is stuck in the hollow part on the base, the component accommodating groove corresponds to the position of the component that needs to be bent and pressed. At this time, the operator only needs to bend the component to bend the pin of the component, and the bent part of the component is just accommodated in the component accommodating groove. That is, when positioning and fixing the circuit board, the operation of some components on the circuit board can be completed simultaneously, thereby improving the overall efficiency of circuit board manufacturing. The existence of the component accommodating groove can ensure that the degree of bending and pressing of the components that need to be bent and pressed on each circuit board remains consistent.

[0018] Preferably, a wrench column is provided on the pressing portion.

[0019] Therefore, the pressing part can be pressed onto the circuit board or separated from the circuit board by toggling the lever column, which is very convenient. When the thickness of the circuit board that needs wave soldering becomes larger, the lever column can be pulled upward first, and the lever column drives the pressing part to move upward a certain distance synchronously. Then the lever column can be toggled again to press the pressing part onto the circuit board. Due to the presence of the spring, the pressing part can always be pressed onto the circuit board, and it can be suitable for fixing circuit boards of various thicknesses.

[0020] Preferably, a cross groove is provided on the nut of the adjusting bolt.

[0021] Therefore, the adjusting bolt can be screwed very conveniently through the cross slot, so that the compression amount of the spring on the adjusting bolt can be adjusted, that is, the range of the upward and downward movement of the pressing part can be adjusted to be suitable for fixing circuit boards of greater thickness.

[0022] Preferably, the periphery of the base is provided with a convex edge extending upward, and the outer side wall of the convex edge is provided with two lifting handles arranged opposite to each other.

[0023] Therefore, the convex edge can protect the circuit board fixed on the base in the circumferential direction, and the base can be moved very conveniently by raising the hand.

[0024] Preferably, four positioning portions are provided around the hollow portion, and the four positioning portions are respectively close to four corners of the hollow portion.

[0025] Therefore, the four positioning portions can press the circuit board onto the base in a balanced manner.

[0026] Preferably, there are multiple hollow parts, which are arranged in parallel, the number of positioning parts is four times the number of hollow parts, and four positioning parts are arranged around each hollow part, and the four positioning parts are respectively close to the four corners of the hollow part.

[0027] Therefore, multiple circuit boards can be positioned and fixed on the base at the same time for wave soldering operations, thereby improving the wave soldering efficiency of the circuit boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a mounting fixture for wave soldering circuit boards according to an embodiment of the utility model;

[0029] Figure 2 for Figure 1 An enlarged structural diagram of location A in the installation fixture shown;

[0030] Figure 3 for Figure 1 An enlarged structural diagram of location B in the installation fixture shown;

[0031] Figure 4 This is a schematic structural diagram of a mounting fixture for wave soldering circuit boards according to another embodiment of the utility model;

[0032] Figure 5 for Figure 4 An enlarged structural diagram of location C in the installation fixture shown;

[0033] Figure 6 for Figure 4 The illustrated schematic diagram of the structure of the installation fixture after the first protrusion and the second protrusion in a hollow portion are hidden;

[0034] Figure 7 for Figure 6 An enlarged schematic diagram of the structure at point D in the mounting fixture shown. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0037] Figures 1 to 3 The structure of a mounting fixture for a wave soldering circuit board according to an embodiment of the utility model is schematically shown.

[0038] See also Figures 1 to 3 The mounting fixture for wave soldering circuit boards includes a base 1, a positioning portion 2 and a positioning protrusion 3.

[0039] See also Figure 1 The base 1 is in a rectangular shape as a whole, and a rectangular hollow portion 11 is formed on the base 1. A bearing protrusion is provided on the side wall of the hollow portion 11. The hollow portion 11 is used to accommodate a circuit board that requires wave soldering. The circuit board is clamped in the hollow portion 11 on the base 1, and the edge of the bottom of the circuit board overlaps the bearing protrusion. The side wall of the hollow portion 11 is used to limit the circuit board in the horizontal direction, and the bearing protrusion holds the edge of the circuit board upward to limit the circuit board in the vertical direction.

[0040] See also Figure 1 and Figure 3 The bearing protrusion includes a first protrusion 12 and a second protrusion 13. The number of the first protrusions 12 is two, and the two first protrusions 12 are respectively arranged on two opposite short side walls of the hollow part 11 (such as integrally formed). The number of the second protrusions 13 is multiple, and the multiple second protrusions 13 are respectively arranged on two opposite long side walls of the hollow part 11. In this embodiment, the number of the second protrusions 13 is six, and three second protrusions 13 are arranged on one long side wall of the two opposite long side walls of the hollow part 11 (such as integrally formed), and the other three second protrusions 13 are arranged on the other long side wall of the two opposite long side walls of the hollow part 11 (such as integrally formed). The two first protrusions 12 and the six second protrusions 13 are arranged at the same height. The two first protrusions 12 and the six second protrusions 13 can jointly support the edge of the circuit board upward to limit the circuit board in the longitudinal direction, ensuring that the circuit board is stably stuck in the hollow part 11.

[0041] See also Figure 1 and Figure 2The positioning part 2 includes an adjusting bolt 21, a spring 22 and a pressing part 23. The adjusting bolt 21 is screwed on the base 1, the spring 22 is sleeved on the adjusting bolt 21, and the pressing part 23 is also sleeved on the adjusting bolt 21. The pressing part 23 is rotatably connected with the adjusting bolt 21, that is, the pressing part 23 can rotate around the adjusting bolt 21, one end of the spring 22 presses on the pressing part 23, and the other end of the spring 22 presses on the nut of the adjusting bolt 21. The spring 22 is in a compressed state, and the bottom of the pressing part 23 is flat. Under the elastic force of the spring 22, the bottom of the pressing part 23 is attached to the base 1; when the circuit board that needs wave soldering is clamped in the hollow part 11 on the base 1, the side wall of the hollow part 11 is used to limit the circuit board in the horizontal direction, and the two first protrusions 12 and the six second protrusions 13 jointly support the edge of the circuit board upward to limit it in the longitudinal direction, and then rotate The clamping part 23 is moved to press the clamping part 23 against the circuit board. Under the elastic force of the spring 22, the clamping part 23 can press the circuit board against the base 1, so that the circuit board is positioned and fixed in the horizontal and vertical directions, ensuring that the circuit board will not be deformed due to high temperature when passing through the wave soldering machine. After welding is completed, the circuit board can be removed by rotating the clamping part 23, which is very convenient for fixing and loosening the circuit board. In addition, when it is necessary to replace a circuit board of the same size (length and width) and a larger thickness, due to the presence of the spring 22, the clamping part 23 has space to move upward. In this way, under the elastic force of the spring 22, the clamping part 23 can still be pressed against the circuit board, so that it can be suitable for fixing circuit boards of various thicknesses. When it is necessary to replace circuit boards of the same size (length and width) and different thicknesses for wave soldering, it is no longer necessary to frequently replace the mounting fixture, which can improve the efficiency of wave soldering.

[0042] See also Figure 2 In order to facilitate the rotation of the clamping part 23, a lever column 231 is formed on the clamping part 23. By moving the lever column 231, the clamping part 23 can be pressed on the circuit board or separated from the circuit board, which is very convenient; due to the presence of the spring 22, the clamping part 23 has space to move upward. When the thickness of the circuit board that needs wave soldering becomes larger, the lever column 231 can be pulled upward first, and the lever column 231 drives the clamping part 23 to move upward a certain distance synchronously, and then the lever column 231 can be moved to press the clamping part 23 on the circuit board. Due to the presence of the spring 22, the clamping part 23 can always be pressed on the circuit board, and it can be suitable for fixing circuit boards of various thicknesses.

[0043] See also Figure 2 A cross groove 211 is formed on the nut of the adjusting bolt 21, and the adjusting bolt 21 can be easily screwed through the cross groove 211, so that the compression amount of the spring 22 on the adjusting bolt 21 can be adjusted, that is, the range of the upper and lower movements of the clamping part 23 can be adjusted to be suitable for fixing circuit boards of greater thickness.

[0044] See also Figure 1 Four positioning parts 2 are installed around a hollow part 11. The four positioning parts 2 are respectively close to the four corners of the hollow part 11. The four positioning parts 2 can press the circuit board into the hollow part 11 on the base 1 in a balanced manner.

[0045] See also Figure 1 In this embodiment, the number of hollow parts 11 is four, and the four hollow parts 11 are arranged in parallel on the base 1. The number of positioning parts 2 is four times the number of hollow parts 11, that is, the number of positioning parts 2 is sixteen, and four positioning parts 2 are installed around each hollow part 11, and the four positioning parts 2 are respectively close to the four corners of the hollow part 11. In this way, four circuit boards can be positioned and fixed on the base 1 at the same time for wave soldering operations, thereby improving the wave soldering efficiency of the circuit boards. In other embodiments, according to the specifications of the wave soldering machine and the size of the base 1, the number of hollow parts 11 can be adjusted, such as two, three or more than five (including five).

[0046] See also Figure 1 and Figure 3 The positioning protrusion 3 is arranged on the base 1 and part of the positioning protrusion 3 is located above the hollow portion 11, that is, part of the positioning protrusion 3 extends from the surface where the side wall of the hollow portion 11 is located. The positioning protrusion 3 can be integrally formed with the base 1. When the circuit board is clamped in the hollow portion 11 on the base 1, the positioning protrusion 3 can be clamped in the card slot on some circuit boards. When installing the circuit board, it is necessary to align the card slot on the circuit board with the positioning protrusion 3 and then clamp it in the hollow portion 11. The positioning protrusion 3 can further limit the circuit board in the horizontal direction. In this embodiment, the number of positioning protrusions 3 is three, and the three positioning protrusions 3 are located at the edge of the top of a long side wall of the hollow portion 11. In other embodiments, the number and arrangement of the positioning protrusions 3 can be adjusted accordingly according to the adapted circuit board.

[0047] See also Figure 1 and Figure 3, a component accommodating groove 14 is formed on the base 1, and the component accommodating groove 14 is located at the edge of the top of the side wall of the hollow part 11, and the end of the component accommodating groove 14 facing the hollow part 11 is open; according to the requirements of installing the circuit board on the product, some components on the circuit board need to be bent (such as LED), and when the circuit board is stuck in the hollow part 11 on the base 1, the component accommodating groove 14 corresponds to the position of the component that needs to be bent. At this time, the operator only needs to bend the component to bend the pin of the component, and the bent part of the component is just accommodated in the component accommodating groove 14, that is, when positioning and fixing the circuit board, the operation of the components on the circuit board can be completed simultaneously, thereby improving the overall efficiency of making the circuit board. The existence of the component accommodating groove 14 can ensure that the degree of bending and pressing of the components that need to be bent on each circuit board remains consistent. In this embodiment, the number of component accommodating grooves 14 is three, and the three component accommodating grooves 14 are located at the edge of the top of the side wall of the hollow part 11. In other embodiments, the number, shape and arrangement of the component accommodating grooves 14 can be adjusted accordingly according to the adapted circuit board.

[0048] See also Figure 1 A convex edge 15 is formed around the periphery of the base 1. The convex edge 15 is formed by extending upward from the periphery of the base 1. The convex edge 15 can protect the circuit board fixed on the base 1 in the circumferential direction.

[0049] See also Figure 1 Two lifting handles 16 are formed on the outer side wall of the convex edge 15. The two lifting handles 16 are respectively located on both sides of the base 1 and are arranged opposite to each other. The base 1 can be moved, carried or lifted very conveniently by the lifting handles 16.

[0050] See also Figure 1When wave soldering is required for the circuit board, the four circuit boards are respectively clamped in the four hollow parts 11 on the base 1. The side walls of the hollow parts 11 are used to limit the circuit boards in the horizontal direction. The two first protrusions 12 and the six second protrusions 13 on the side walls of the hollow parts 11 can jointly hold the edge of the circuit board upward to limit the circuit board in the longitudinal direction, ensuring that the circuit board is stably clamped in the hollow parts 11. Then, the lever column 231 on each pressing part 23 is respectively moved, so that the four pressing parts 23 around each hollow part 11 are pressed against the circuit board. Under the elastic force of the spring 22, the pressing part 23 can press the circuit board on the base 1. In the hollow portion 11, the circuit board is positioned and fixed in the horizontal and vertical directions, ensuring that the circuit board will not be deformed due to high temperature when passing through the wave soldering machine. After the soldering is completed, the circuit board can be removed by toggling all the lever columns 231, which is very convenient for fixing and loosening the circuit board. Four circuit boards can be positioned and fixed on the base 1 at the same time for wave soldering operations, thereby improving the wave soldering efficiency of the circuit boards. In addition, when it is necessary to replace a circuit board of the same size (length and width) but with a larger thickness, due to the presence of the spring 22, the pressing portion 23 has space to move upward, so that under the elastic force of the spring 22, the pressing portion 23 can still be pressed against the circuit board, thereby It is suitable for fixing circuit boards of various thicknesses. When circuit boards of the same size (length and width) and different thicknesses need to be replaced for wave soldering, it is no longer necessary to frequently replace the installation jig, which can improve the efficiency of wave soldering. Moreover, the adjusting bolt 21 can be screwed through the cross slot 211 on the nut of the adjusting bolt 21 to adjust the compression amount of the spring 22 on the adjusting bolt 21, that is, the range of the upward and downward movement of the clamping part 23 can be adjusted to be suitable for fixing circuit boards of more thicknesses. At the same time, when there is a card slot on some circuit boards, the positioning protrusion 3 can be stuck in the card slot on the circuit board. When installing the circuit board, it is necessary to align the card slot on the circuit board with the positioning protrusion 3 and then clamp it. It can be in the hollow part 11, and the positioning protrusion 3 can further limit the circuit board in the horizontal direction. According to the requirements of installing the circuit board on the product, when some components on the circuit board need to be bent (such as LED), after the circuit board is clamped in the hollow part 11 on the base 1, the component accommodating groove 14 corresponds to the position of the component that needs to be bent on the circuit board. At this time, the operator only needs to bend the component to bend the pin of the component, and the bent part of the component is just accommodated in the component accommodating groove 14, that is, when positioning and fixing the circuit board, the operation of the components on the circuit board can be completed simultaneously, thereby improving the overall efficiency of manufacturing the circuit board.

[0051] Figures 4 to 7 The structure of a mounting fixture for wave soldering circuit boards according to another embodiment of the utility model is schematically shown.

[0052] See also Figures 4 to 7The mounting fixture for wave soldering circuit boards includes a base 1, a positioning portion 2 and a positioning protrusion 3.

[0053] See also Figure 4 and Figure 5 In this embodiment, the bearing protrusions also include two first protrusions 12 and six second protrusions 13. The two first protrusions 12 are respectively arranged on two opposite short side walls of the hollow portion 11, and the six second protrusions 13 are respectively arranged on two opposite long side walls of the hollow portion 11. However, the installation method of the two first protrusions 12, the six second protrusions 13 and the side walls of the hollow portion 11 is different from that in Example 1. The other structures of the mounting fixture are the same as those in Example 1 and will not be repeated here.

[0054] See also Figure 6 and Figure 7 , a first slot 111 and a second slot 112 are formed on two opposite short side walls of the hollow portion 11, that is, the number of the first slot 111 and the second slot 112 are both two, the two first slots 111 are arranged at the same height, the two second slots 112 are arranged at the same height, the first slot 111 is located above the second slot 112, the two first protrusions 12 can be respectively inserted into the two first slots 111, and the two first protrusions 12 can also be respectively inserted into the two second slots 112. In order to ensure a stable insertion, the first protrusion 12 and the first slot 111 can be inserted in an interference fit, and the first protrusion 12 can be pulled out of the first slot 111 by force, and the first protrusion 12 and the second slot 112 can be inserted in an interference fit, and the first protrusion 12 can be pulled out of the second slot 112 by force; refer to Figure 6 and Figure 7 Three third slots 113 and three fourth slots 114 are formed on the two opposite long side walls of the hollow portion 11, that is, the number of the third slots 113 and the number of the fourth slots 114 are both six, the six third slots 113 are arranged at the same height, and the six fourth slots 114 are arranged at the same height. The third slot 113 is located above the fourth slot 114, and the six second protrusions 13 can be respectively inserted into the six third slots 113, and the six second protrusions 13 can also be respectively inserted into the six fourth slots 114. In order to ensure a stable insertion, the second protrusion 13 and the third slot 113 can be inserted by interference, and the second protrusion 13 can be pulled out of the third slot 113 with force, and the second protrusion 13 and the fourth slot 114 can be inserted by interference, and the second protrusion 13 can be pulled out of the fourth slot 114 with force, the two first slots 111 and the six third slots 113 are arranged at the same height, and the two second slots 112 and the six fourth slots 114 are arranged at the same height.

[0055] See also Figure 4When it is necessary to replace a circuit board of the same size (length and width) with a relatively large thickness change, the height of the first protrusion 12 on the side wall of the hollow portion 11 can be adjusted, and it can be inserted in the first slot 111 or in the second slot 112. At the same time, the height of the second protrusion 13 on the side wall of the hollow portion 11 can be adjusted, and it can be inserted in the third slot 113 or in the fourth slot 114. As long as the adjusted first protrusion 12 and second protrusion 13 are arranged at the same height, it can be suitable for fixing circuit boards of more thicknesses.

[0056] The above are only some embodiments of the present invention, which are intended to illustrate the technical means of the present invention, but not to limit the technical scope of the present invention. Those skilled in the art can make obvious improvements to the present invention in combination with existing common knowledge, which all fall within the protection scope of the present invention.

Claims

1. A mounting fixture for wave soldering circuit boards, characterized in that: include: A base, wherein the base is provided with at least one hollow portion for accommodating the circuit board, and a bearing protrusion is provided on a side wall of the hollow portion; and The positioning part includes an adjusting bolt, a spring and a pressing part. The adjusting bolt is screwed on the base, the spring is sleeved on the adjusting bolt, the pressing part is sleeved on the adjusting bolt and is rotatably connected with the adjusting bolt, one end of the spring presses on the pressing part, and the other end of the spring presses on the nut of the adjusting bolt. When a suitable circuit board is accommodated in the hollow portion, the pressing portion can press against the circuit board to press the circuit board.

2. The installation jig according to claim 1, characterized in that: The bearing protrusion includes a first protrusion and a second protrusion. The hollow portion is in a rectangular shape. There are two first protrusions, and the two first protrusions are respectively arranged on two opposite short side walls of the hollow portion. There are multiple second protrusions, and the multiple second protrusions are arranged on two opposite long side walls of the hollow portion.

3. The installation jig according to claim 2, characterized in that: A first slot and a second slot are provided on two opposite short side walls of the hollow portion, the two first slots are arranged at the same height, the two second slots are arranged at the same height, the first slot is located above the second slot, and the two first protrusions are respectively inserted in the two first slots, and a plurality of third slots and a fourth slot are provided on two opposite long side walls of the hollow portion, the plurality of third slots are arranged at the same height, the plurality of fourth slots are arranged at the same height, the third slot is located above the fourth slot, the number of the third slots, the fourth slots and the second protrusions are the same, and the plurality of second protrusions are respectively inserted in one third slot, the first slot and the third slot are arranged at the same height, and the second slot and the fourth slot are arranged at the same height.

4. The installation jig according to claim 1, characterized in that: It also includes a plurality of positioning protrusions, which are arranged on the base and parts of the positioning protrusions are located above the hollow part.

5. The installation jig according to claim 1, characterized in that: The base is provided with a component accommodating groove, the component accommodating groove is located at the edge of the hollow portion, and the end of the component accommodating groove facing the hollow portion is open.

6. The installation jig according to claim 1, characterized in that: The pressing part is provided with a wrench column.

7. The installation jig according to claim 1, characterized in that: A cross groove is arranged on the nut of the adjusting bolt.

8. The installation jig according to claim 1, characterized in that: The periphery of the base is provided with a convex edge extending upwards, and the outer side wall of the convex edge is provided with two lifting handles arranged opposite to each other.

9. The installation jig according to claim 2, characterized in that: Four positioning parts are arranged around the hollow part, and the four positioning parts are respectively close to four corners of the hollow part.

10. The mounting jig according to any one of claims 1 to 9, characterized in that: There are multiple hollow parts, which are arranged in parallel. The number of positioning parts is four times the number of hollow parts. Four positioning parts are arranged around each hollow part, and the four positioning parts are respectively close to the four corners of the hollow part.

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