Wave soldering jig with positioning function

Abstract

A wave soldering jig with a positioning function comprises a base plate and a cover plate, a tin blocking frame is arranged on the periphery of the base plate, a plurality of guide columns are arranged at the top end of the tin blocking frame at intervals, a plurality of threaded holes are symmetrically formed in the inner bottom end of the base plate, bolts are arranged in the threaded holes, a fixing device is arranged on a screw rod of each bolt, and the cover plate is arranged on the base plate. The cover plate is provided with mounting holes in one-to-one correspondence with the guide columns, the cover plate and the base plate are fixed in an inserted mode, a plurality of through grooves are formed in the top end of the cover plate at equal intervals, and a positioning groove used for containing a circuit board is formed in the bottom end of the cover plate. According to the utility model, the positioning of the circuit board is realized through the cooperation of the bolt and the fixing device, the bolt and the fixing device are fastened through automatic equipment in the subsequent process, manual tightening is not needed, the chassis and the cover plate are fixed in an inserted manner, the assembly is rapid, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of welding jigs, in particular to a wave soldering jig with a positioning function. Background Art

[0002] Wave soldering is to make the soldering surface of the plug-in board directly contact with high-temperature liquid tin to achieve the purpose of soldering. The high-temperature liquid tin maintains an inclined surface, and a special device is used to make the liquid tin form a wave-like phenomenon, so it is called "wave soldering". Its main material is solder bar.

[0003] The Chinese patent with the authorization announcement number CN206472379U discloses a wave soldering jig, including an inner plate, an outer frame, an elastic holding part, and a positioning part; the middle part of the inner plate is hollowed out; the outer frame includes an upper frame and a lower frame, the upper frame and the lower frame each include four sides, the first side of the upper frame is movably connected with the first side of the lower frame, the upper frame can rotate with the first side of the lower frame as an axis, and the second side of the upper frame and the second side of the lower frame are connected by a buckle; the inner plate is clamped between the upper frame and the lower frame; the elastic holding part is arranged on the side of the upper frame, used to hold the heat sink on the printed circuit board, and the positioning part is arranged on the inner plate, used to position the printed circuit board. The utility model solves the problem of poor clamping effect of the existing wave soldering jig, improves the fastening effect, has a simple structure, and is easy to operate.

[0004] The above-mentioned prior art solutions have the following defects: during use, multiple screws and bolts need to be manually loosened and tightened repeatedly, the assembly is slow and the operation is cumbersome, and the work efficiency is low. Utility Model Content

[0005] The purpose of the utility model is to provide a wave soldering fixture with a positioning function to solve the problems existing in the above-mentioned prior art.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A wave soldering fixture with a positioning function comprises a chassis and a cover plate, wherein a tin-blocking frame is arranged at the periphery of the chassis, a plurality of guide posts are arranged at intervals at the top end of the tin-blocking frame, a plurality of threaded holes are symmetrically arranged at the inner bottom end of the chassis, bolts are arranged in the threaded holes, a fixing device is arranged on the screw rod of the bolt, mounting holes corresponding to the guide posts are arranged on the cover plate, the cover plate is plugged and fixed to the chassis, a plurality of through grooves are arranged at equal intervals at the top end of the cover plate, and a positioning groove for accommodating a circuit board is arranged at the bottom end of the cover plate.

[0008] By adopting the above technical solution, the assembly of the chassis and the cover becomes easy and quick. The guide pillars and mounting holes are responsible for positioning and fixing. You only need to align the position and press. The fixing device on the top of the chassis is not blocked by the cover. The bolts can be tightened quickly by automated equipment, eliminating the step of manually tightening the screws, greatly improving production efficiency.

[0009] In a further embodiment, the fixing device includes a connecting plate and a fixing block body, one end of the connecting plate is provided with a through hole, the through hole is coaxially arranged with the bolt, and the other end of the connecting plate is fixedly connected to the fixing block.

[0010] By adopting the above technical solution, the fixing device itself is arranged on the bolt, the fixing block is rotated onto the circuit board, and then the bolt is tightened or loosened by the automated equipment, thereby fixing the circuit board.

[0011] In a further embodiment, the fixing device is made of reinforced polyvinyl chloride.

[0012] By adopting the above technical solution, the reinforced polyvinyl chloride has high mechanical strength, excellent electrical insulation performance and good high temperature resistance, and is very suitable as a fixture in the process of wave soldering.

[0013] In a further embodiment, a plurality of first magnetic attraction grooves are provided at the top of the tin blocking frame, and a magnetic attraction device is embedded in the first magnetic attraction grooves.

[0014] By adopting the above technical solution, the plug-in fixed cover plate and chassis can be assisted to enhance the reliability of their connection.

[0015] In a further embodiment, a plurality of second magnetic grooves are provided at the bottom end of the cover plate, the positions of the second magnetic grooves correspond one-to-one to the first magnetic grooves, and a magnetic device is embedded in the second magnetic grooves.

[0016] By adopting the above technical solution, the cover plate uses non-metallic materials to reduce costs and reduce weight, and the magnetic device embedded in the magnetic groove can adsorb and fix the cover plate and the chassis.

[0017] In a further embodiment, a plurality of board taking slots are provided at the top of the chassis, and the board taking slots are located on both sides of the circuit board.

[0018] By adopting the above technical solution, the circuit board is not easy to be taken out after being attached to the chassis. Digging it out with fingernails is not good for the health of workers and may also scratch the circuit board. After the board removal groove is provided, the circuit board can be easily taken out.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. Through the setting of the fixing device, the fixing block only needs to be rotated to the edge of the circuit board to initially fix the circuit board. Then the tightness of the bolts can be adjusted through the automated equipment, and then the fixing block can fix the circuit board, thereby improving production efficiency.

[0021] 2. Through the setting of the magnetic groove and the magnetic device, it can play the role of auxiliary guide column and mounting hole, and strengthen the connection between the chassis and the cover plate;

[0022] 3. The positioning groove at the bottom of the cover plate can further fix the circuit board so that it will not move or shake during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a structural schematic diagram used to reflect the chassis in the utility model;

[0025] Figure 3 It is a structural schematic diagram used to reflect the bottom end of the cover plate in the utility model;

[0026] Figure 4 It is a structural schematic diagram used to embody the fixing block in the utility model.

[0027] In the figure, 1, chassis; 11, tin blocking frame; 12, guide column; 13, threaded hole; 14, bolt; 15, fixing device; 151, connecting plate; 152, fixing block body; 16, first magnetic groove; 17, plate removal groove; 2, cover plate; 21, positioning groove; 22, second magnetic groove. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1 In the description of this specification, the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from a particular component geometry, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this specification, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] Embodiment 1:

[0031] like Figure 1-2 As shown, a wave soldering fixture with a positioning function includes a chassis 1 and a cover plate 2, a tin-blocking frame 11 is arranged at the periphery of the chassis 1, a plurality of guide pillars 12 are arranged at intervals on the top of the tin-blocking frame 11, a plurality of threaded holes 13 are symmetrically arranged on the inner bottom end of the chassis 1, bolts 14 are arranged in the threaded holes 13, and the screws of the bolts 14 are provided with fixing devices 15, and mounting holes corresponding to the guide pillars 12 are arranged on the cover plate 2, the cover plate 2 is plugged and fixed to the chassis 1, a plurality of through grooves are arranged at equal intervals on the top of the cover plate 2, and a positioning groove 21 for accommodating a circuit board is arranged at the bottom end of the cover plate 2, the chassis 1 and the cover plate 2 are plugged and fixed by the guide pillars 12, the fixing device 15 is arranged on the bolts 14 of the threaded holes of the chassis 1, and the circuit board can be fixed by rotating the rotating 15 fixing block, and the upper half of the circuit board is accommodated in the positioning groove 21 at the bottom end of the cover plate 2, and the position of the circuit board can be effectively limited by the cooperation of the positioning groove 21 and the fixing device 15.

[0032] like Figure 2-3 As shown, a plurality of first magnetic grooves 16 are provided at the top of the tin blocking frame 11, and a magnetic device is embedded in the first magnetic grooves 16. A plurality of second magnetic grooves 22 are provided at the bottom end of the cover plate 2, and the positions of the second magnetic grooves 22 correspond one-to-one to the first magnetic grooves 16, and a magnetic device is embedded in the second magnetic grooves 22. If only the guide column 12 and the mounting hole cooperate, the cover plate 2 may become loose during welding. By embedding the magnetic device in the first magnetic grooves 16 and the second magnetic grooves 22, the plug-in fixation of the guide column 12 can be supplemented to improve the stability of the device.

[0033] like Figure 2-4 As shown, the fixing device 15 includes a connecting plate 151 and a fixing block body 152. A through hole is provided at one end of the connecting plate 151, and the through hole is coaxially arranged with the bolt 14. The other end of the connecting plate 151 is fixedly connected to the fixing block body 152. The material of the fixing device 15 is reinforced polyvinyl chloride. Reinforced polyvinyl chloride has high mechanical strength, excellent electrical insulation performance and good high temperature resistance. It will not be damaged during the tightening process of the bolt 14, and will also face a high temperature environment during the wave soldering process. Therefore, reinforced polyvinyl chloride is very suitable as a fixture fixing device during the wave soldering process.

[0034] Specific implementation process:

[0035] First, remove the cover plate 2 from the chassis 1. At this time, the through hole at one end of the fixing device 15 is coaxially arranged with the bolt 14. The bolt 14 has been set in the threaded hole but has not been completely tightened. First, put the first circuit board into the receiving groove of the chassis 1, and then place the fixing block body 152 of the fixing device 15 on the first circuit board. At this time, the first circuit board has been preliminarily fixed. Then, insert multiple second circuit boards into specific positions on the first circuit board. After all are inserted, align the mounting holes of the cover plate 2 with the guide pillars 12 at the top of the tin-blocking frame 11 of the chassis and cover them. At this time, the magnetic suction holes respectively embedded in the chassis 1 and the cover plate 2 The device is adsorbed and fixed, and through grooves corresponding to the multiple second circuit boards are provided on the cover plate 2. Through these through grooves, the second circuit board can be moved with tweezers to slide it into the positioning groove 21 at the bottom end of the cover plate 2 and fixed. Finally, the initially installed wave soldering fixture is placed on the assembly line, and the multiple bolts 14 on the chassis are tightened by automated equipment. When the welding is completed, the bolts 14 return to their initial state. At this time, the cover plate 2 is opened, and the fixing device 15 is moved to a position that will not block the circuit board. Then the circuit board can be smoothly taken out through the board removal slot 17 at the top of the chassis 1.

[0036] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A wave soldering fixture with a positioning function, comprising a chassis (1) and a cover plate (2), characterized in that: A tin blocking frame (11) is arranged at the periphery of the chassis (1), a plurality of guide pillars (12) are arranged at intervals at the top end of the tin blocking frame (11), a plurality of threaded holes (13) are symmetrically arranged at the inner bottom end of the chassis (1), a bolt (14) is arranged in the threaded hole (13), a fixing device (15) is arranged on the screw rod of the bolt (14), the cover plate (2) is provided with mounting holes corresponding to the guide pillars (12), the cover plate (2) is plugged and fixed to the chassis (1), a plurality of through grooves are arranged at equal intervals at the top end of the cover plate (2), and a positioning groove (21) for accommodating a circuit board is arranged at the bottom end of the cover plate (2).

2. The wave soldering fixture with positioning function according to claim 1, characterized in that: The fixing device (15) comprises a connecting plate (151) and a fixing block body (152); one end of the connecting plate (151) is provided with a through hole, the through hole is coaxially arranged with the bolt (14); the other end of the connecting plate (151) is fixedly connected to the fixing block.

3. The wave soldering fixture with positioning function according to claim 2, characterized in that: The material of the fixing device (15) is reinforced polyvinyl chloride.

4. The wave soldering fixture with positioning function according to claim 1, characterized in that: A plurality of first magnetic attraction grooves (16) are arranged at the top end of the tin blocking frame (11), and a magnetic attraction device is embedded in the first magnetic attraction grooves (16).

5. The wave soldering fixture with positioning function according to claim 4, characterized in that: A plurality of second magnetic attraction grooves (22) are arranged at the bottom end of the cover plate (2), the positions of the second magnetic attraction grooves (22) correspond one-to-one to the first magnetic attraction grooves (16), and a magnetic attraction device is embedded in the second magnetic attraction grooves (22).

6. The wave soldering fixture with positioning function according to claim 1, characterized in that: A plurality of board taking slots (17) are arranged at the top end of the chassis (1), and the board taking slots (17) are located on both sides of the circuit board.

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