Magnetic type circuit board pressing jig

Abstract

The utility model discloses a magnetic type circuit board pressing jig which comprises a lower pressing plate and an upper pressing plate. The lower pressing plate is provided with a first groove, a second groove, a plurality of first supporting blocks, a plurality of first positioning holes, a plurality of first magnets and a plurality of second positioning holes. The plurality of first supporting blocks are arranged in the first groove; the second groove is used for placing a circuit board; the plurality of first magnets are in one-to-one correspondence with the plurality of first positioning holes and are fixed in the corresponding first positioning holes; a plurality of elastic plungers, a plurality of locking assemblies, a plurality of third positioning holes and a plurality of second magnets are arranged on the upper pressing plate; the locking assemblies are movably connected with the upper pressing plate and can lock the upper pressing plate and the lower pressing plate. And the plurality of second magnets are in one-to-one correspondence with the plurality of third positioning holes and are fixed in the corresponding third positioning holes. According to the utility model, the service life of the pressing jig is prolonged, and the production cost is reduced; and the problems of high-temperature deformation and cooling deformation of the circuit board assembly in a furnace can be effectively controlled and solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing equipment, in particular to a magnetic suction type circuit board pressing fixture. Background Art

[0002] For the circuit board processing process, for thinner circuit board components (0.3-1.0mm thick), the whole process of the carrier automated assembly line production is generally used to complete the welding. However, the circuit board components will deform and warp after passing through the high temperature furnace, which will affect the production of the second side and the hidden dangers of product quality. The welding carrier in the existing technology only designs the carrier, and does not design the pressure cover to install the pressure column to press the circuit board assembly, which cannot solve the problem of deformation and warping of the board during high temperature. Summary of the invention

[0003] According to an embodiment of the utility model, a magnetic circuit board pressing fixture is provided, comprising:

[0004] A lower pressing plate, wherein the lower pressing plate is provided with a first groove, a second groove, a plurality of first supporting blocks, a plurality of first positioning holes, a plurality of first magnets and a plurality of second positioning holes;

[0005] A plurality of first support blocks are arranged in the first groove;

[0006] The second groove is used for placing the circuit board;

[0007] A plurality of first magnets correspond to a plurality of first positioning holes one by one and are fixed in the corresponding first positioning holes;

[0008] An upper pressing plate, on which a plurality of elastic plungers, a plurality of locking components, a plurality of third positioning holes and a plurality of second magnets are arranged;

[0009] A plurality of elastic plungers are used for pressing the circuit board;

[0010] A plurality of locking assemblies are movably connected to the upper pressing plate and correspond one to one with the plurality of second positioning holes, and the upper pressing plate and the lower pressing plate are locked through the corresponding second positioning holes;

[0011] The plurality of second magnets correspond to the plurality of third positioning holes one by one and are fixed in the corresponding third positioning holes;

[0012] The first magnets correspond to the second magnets one by one and can be attracted to the corresponding second magnets.

[0013] Furthermore, a plurality of fourth positioning holes are arranged on the lower pressing plate, a plurality of first positioning columns corresponding to the fourth positioning holes are arranged on the upper pressing plate, and a chamfer is arranged at the lower end of the first positioning column.

[0014] Furthermore, a first guide arrow is arranged on the lower pressing plate, and a second guide arrow corresponding thereto is arranged on the upper pressing plate.

[0015] Furthermore, a pair of first openings is provided on the lower pressing plate, and a pair of second openings corresponding thereto is provided on the lower pressing plate; the pair of first openings and the corresponding second openings are arranged alternately.

[0016] Further, the locking assembly comprises: a first limiting member, a second limiting member, a rotating shaft and a spring;

[0017] The first limiting member and the second limiting member are arranged at both ends of the rotating shaft and are fixedly connected to the rotating shaft;

[0018] The rotating shaft is hinged to the upper pressing plate;

[0019] The spring sleeve is arranged on the rotating shaft and is located between the upper pressing plate and the first limiting member, or between the upper pressing plate and the second limiting member.

[0020] Furthermore, a pair of limiting grooves are provided at the lower end of the second positioning hole for limiting the rotation angle of the locking assembly.

[0021] Furthermore, a plurality of first positioning protrusions are arranged in the second groove.

[0022] Furthermore, a plurality of heat dissipation holes are provided on the upper pressing plate and the lower pressing plate.

[0023] Furthermore, a plurality of welding holes are arranged on the upper pressing plate.

[0024] Furthermore, engaging steps are arranged around the lower side of the lower pressing plate.

[0025] Furthermore, the upper pressing plate and the lower pressing plate are made of aluminum alloy.

[0026] The magnetic circuit board pressing jig according to the embodiment of the utility model prolongs the service life of the pressing jig and reduces the production cost; and can effectively control and solve the problems of high temperature deformation and cooling deformation of circuit board components in the furnace.

[0027] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a stereogram according to an embodiment of the utility model;

[0029] Figure 2 A top view according to an embodiment of the utility model;

[0030] Figure 3 is a schematic diagram of a three-dimensional view of a lower pressing plate according to an embodiment of the utility model;

[0031] Figure 4 According to the embodiment of the present utility model Figure 3Bottom view of

[0032] Figure 5 It is a schematic diagram of a second positioning hole and a limiting groove according to an embodiment of the utility model;

[0033] Figure 6 It is a schematic diagram of an upper pressing plate according to an embodiment of the utility model. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0035] First, combine Figures 1 to 6 A magnetic circuit board pressing jig according to an embodiment of the utility model is described, which is used in the technical field of circuit board processing and has a wide range of application scenarios.

[0036] like Figures 1 to 6 As shown, the magnetic circuit board pressing fixture of the embodiment of the utility model comprises:

[0037] A lower pressing plate 1, on which a first groove 11, a second groove 12, a plurality of first supporting blocks 13, a plurality of first positioning holes 14, a plurality of first magnets (not shown) and a plurality of second positioning holes 16 are provided;

[0038] A plurality of first support blocks 13 are disposed in the first groove 11 to support the circuit board so that the circuit board is suspended in the air to facilitate heat dissipation during welding;

[0039] The second groove 12 is used for placing the circuit board and also for limiting the position of the circuit board;

[0040] The first magnets correspond to the first positioning holes 14 one by one and are fixed in the corresponding first positioning holes 14;

[0041] An upper pressing plate 2, on which a plurality of elastic plungers 21, a plurality of locking components 22, a plurality of third positioning holes 23 and a plurality of second magnets (not shown);

[0042] A plurality of elastic plungers 21 are used to press the circuit board to compact the circuit board to prevent the circuit board from being deformed during welding;

[0043] A plurality of locking components 22 are movably connected to the upper pressing plate 2 and correspond one to one with the plurality of second positioning holes 16, and the upper pressing plate 2 and the lower pressing plate 1 are locked through the corresponding second positioning holes 16;

[0044] The plurality of second magnets correspond to the plurality of third positioning holes 23 one by one and are fixed in the corresponding third positioning holes 23;

[0045] The first magnets correspond to the second magnets one by one and can be attracted to the corresponding second magnets to make the upper pressing plate 2 and the lower pressing plate 1 tightly attracted. The first magnets and the corresponding second magnets also have a guiding function during the attraction process.

[0046] Further, if Figure 1 , 6 As shown, in this embodiment, a plurality of fourth positioning holes 110 are provided on the lower pressure plate 1, and chamfers are provided at the upper ends of the fourth positioning holes 110; a plurality of first positioning columns 28 corresponding to the fourth positioning holes 110 are provided on the upper pressure plate 2, and chamfers are provided at the lower ends of the first positioning columns 28. The first positioning columns 28 can be inserted into the corresponding fourth positioning holes 110 to play a guiding and positioning role.

[0047] Further, if Figure 1~2 As shown, in this embodiment, a first guide arrow 17 is provided on the lower pressing plate 1, and a corresponding second guide arrow 25 is provided on the upper pressing plate 1 to indicate the installation direction between the upper and lower pressing plates 1 to prevent the influence caused by wrong installation.

[0048] Further, if Figure 1~2 As shown, in this embodiment, a pair of first openings 18 are provided on the lower pressing plate 1, and a pair of second openings 26 corresponding thereto are provided on the upper pressing plate 1; the pair of first openings 18 and the corresponding second openings 26 are alternately arranged to facilitate taking and placing between the upper and lower pressing plates 1.

[0049] Further, if Figure 1 As shown, in this embodiment, the locking assembly 22 includes: a first limiting member 221, a second limiting member 222, a rotating shaft 223 and a spring 224;

[0050] The first limiting member 221 and the second limiting member 222 are disposed at two ends of the rotating shaft 223 and are fixedly connected to the rotating shaft 223;

[0051] The rotating shaft 223 is hinged to the upper pressing plate 2;

[0052] The spring 224 is sleeved on the rotating shaft 223 and is located between the upper pressing plate 2 and the first limiting member 221 , or between the upper pressing plate 2 and the second limiting member 222 .

[0053] The first limiting member 221 is pressed to allow the second limiting member 222 to enter the second positioning hole 16 , and the second limiting member 222 is rotated to use the elastic force of the spring 224 to lock the upper pressing plate 2 and the lower pressing plate 1 .

[0054] Further, if Figures 4 and 5 As shown, in this embodiment, a pair of limiting grooves 161 are provided at the lower end of the second positioning hole 16 for limiting the rotation angle of the locking assembly 22 .

[0055] Further, if Figure 1 As shown, in this embodiment, a plurality of first positioning protrusions 121 are disposed in the second groove 12 for further fixing the circuit board.

[0056] Further, if Figures 1 to 4 As shown in FIG. 6 , in this embodiment, a plurality of heat dissipation holes 3 are provided on the upper pressing plate 2 and the lower pressing plate 1 for heat dissipation.

[0057] Further, if Figure 1 , 6 As shown, in this embodiment, a plurality of welding holes 27 are provided on the upper pressing plate 2 to prevent the welding head from interfering with the upper pressing plate 2 .

[0058] Further, if Figure 4 As shown, in this embodiment, engaging steps 19 are arranged around the lower side of the lower pressing plate 1, so that the lower pressing plate 1 can be engaged on the conveying track of the welding machine to prevent the lower pressing plate 1 from being misplaced.

[0059] Furthermore, in the present embodiment, the upper pressing plate 2 and the lower pressing plate 1 are made of aluminum alloy, which is easy to process, not easy to deform, light, and has a fast heat dissipation speed.

[0060] Working principle: Place the circuit board in the second groove 12, and the positioning hole on the circuit board is sleeved on the first positioning protrusion 121; then, press the upper pressing plate 2 and the lower pressing plate 1 together, and position them through a plurality of first positioning columns 28 and corresponding second positioning holes 16, and lock them through a plurality of locking components 22.

[0061] Above, refer to Figures 1 to 6 The invention describes a magnetic circuit board pressing jig according to an embodiment of the utility model, which prolongs the service life of the pressing jig and reduces the production cost; and can effectively control and solve the problems of high temperature deformation and cooling deformation of circuit board components in the furnace.

[0062] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0063] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A magnetic circuit board pressing fixture, characterized in that: Include: A lower pressing plate, wherein the lower pressing plate is provided with a first groove, a second groove, a plurality of first supporting blocks, a plurality of first positioning holes, a plurality of first magnets and a plurality of second positioning holes; The plurality of first support blocks are arranged in the first groove; The second groove is used for placing a circuit board; The plurality of first magnets correspond to the plurality of first positioning holes one by one and are fixed in the corresponding first positioning holes; An upper pressing plate, wherein a plurality of elastic plungers, a plurality of locking components, a plurality of third positioning holes and a plurality of second magnets are arranged on the upper pressing plate; The plurality of elastic plungers are used to press the circuit board; The plurality of locking assemblies are movably connected to the upper pressing plate and correspond one-to-one with the plurality of second positioning holes, and the upper pressing plate and the lower pressing plate are locked through the corresponding second positioning holes; The plurality of second magnets correspond to the plurality of third positioning holes one by one and are fixed in the corresponding third positioning holes; The plurality of first magnets correspond to the plurality of second magnets one by one.

2. The magnetic circuit board pressing fixture according to claim 1, characterized in that: The lower pressing plate is provided with a plurality of fourth positioning holes, and the upper pressing plate is provided with a plurality of first positioning columns corresponding to the fourth positioning holes, and the lower ends of the first positioning columns are provided with chamfers.

3. The magnetic circuit board pressing fixture according to claim 1, characterized in that: The lower pressing plate is provided with a first guide arrow, and the lower pressing plate is provided with a second guide arrow corresponding thereto.

4. The magnetic circuit board pressing jig according to claim 1, characterized in that: The lower pressing plate is provided with a pair of first openings, and the lower pressing plate is provided with a pair of second openings corresponding thereto; the pair of first openings and the corresponding second openings are arranged alternately.

5. The magnetic circuit board pressing jig according to claim 1, characterized in that: The locking assembly comprises: a first limiting member, a second limiting member, a rotating shaft and a spring; The first limiting member and the second limiting member are arranged at two ends of the rotating shaft and are fixedly connected to the rotating shaft; The rotating shaft is hinged to the upper pressing plate; The spring is sleeved on the rotating shaft and is located between the upper pressing plate and the first limiting member, or between the upper pressing plate and the second limiting member.

6. The magnetic circuit board pressing jig according to claim 1, characterized in that: A pair of limiting grooves are provided at the lower end of the second positioning hole for limiting the rotation angle of the locking assembly.

7. The magnetic circuit board pressing jig according to claim 1, characterized in that: A plurality of first positioning protrusions are arranged in the second groove.

8. The magnetic circuit board pressing jig according to claim 1, characterized in that: The upper pressing plate and the lower pressing plate are both provided with a plurality of heat dissipation holes.

9. The magnetic circuit board pressing jig according to claim 1, characterized in that: The lower side of the lower pressing plate is provided with clamping steps around it.

10. The magnetic circuit board pressing jig according to claim 1, characterized in that: The upper pressing plate and the lower pressing plate are made of aluminum alloy.

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