SMT furnace jig applied to wave soldering equipment

Abstract

The utility model relates to the technical field of SMT furnace passing, in particular to an SMT furnace passing jig applied to wave soldering equipment, which comprises a base and a circuit board, the base is provided with a rectangular placing groove, and the circuit board is placed in the placing groove; four limiting devices are uniformly arranged on the base on the periphery of the placing groove; the four inner side faces of the containing groove are each provided with a jacking device. The base is further provided with a pressing device, and the pressing device is arranged above the circuit board and presses the circuit board downwards. The circuit board is placed in the containing groove, the limiting device is used for limiting the circuit board according to the position, needing tin soldering, of the circuit board, meanwhile, the pressing device is adjusted according to the tin soldering position to press and fix the circuit board, and the circuit board is further fixed through the jacking device. The circuit board is guaranteed to be tightly attached to the bottom of the containing groove, the problems of missing soldering, insufficient soldering, infirm soldering and the like in the tin soldering process are solved, the reject ratio of products is greatly reduced, manpower waste caused by reworking is avoided, and production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the peak welding furnace technology field, concretely relates to a kind of SMT furnace jigs applied to peak welding equipment. BACKGROUND

[0002] Furnace is a kind of equipment used in electronic manufacturing process, mainly for the soldering treatment of circuit board. The furnace equipment melts solder through high temperature, so as to fix electronic components on circuit board. Furnace equipment is usually used for SMT (Surface Mount Technology) processing, and is suitable for various circuit boards with SMD (Surface Mount Device) components on the soldering surface of plug-in material. SMT (Surface Mount Technology) is an advanced electronic manufacturing technology, and SMT furnace as part of SMT technology is undoubtedly the embodiment of advanced manufacturing and automation.

[0003] SMT furnace jig is a jig specially used for SMT processing, and is suitable for various circuit boards with SMD components on the soldering surface of plug-in material. It is mainly used to prevent deformation of circuit board during peak welding, protect SMD components from damage, and improve production efficiency and product quality. Therefore, SMT furnace jig needs to limit and fix circuit board in all directions to ensure that circuit board can be stably peak welded. SUMMARY

[0004] The utility model provides a kind of SMT furnace jigs applied to peak welding equipment to reach the purpose of limiting and fixing circuit board in all directions, to ensure that circuit board can be stably peak welded.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows: a kind of SMT furnace jig applied to peak welding equipment is provided, comprising a base and a circuit board, and the innovation point is that a rectangular-shaped placing groove is provided on the base, and the circuit board is placed in the placing groove;Four limiting devices are evenly provided on the base around the placing groove, and the limiting device can be rotated above the circuit board to limit the circuit board;Four inner sides of the placing groove are each provided with a jacking device, and the jacking device extends into the placing groove to jack the circuit board;The base is further provided with a pressing device, and the pressing device is arranged above the circuit board and presses the circuit board downward.

[0006] Further, the limiting device comprises a limiting column, a limiting disc and a limiting plate, the limiting column is fixed on the base, one end of the limiting plate is rotatably connected to the limiting column, and the limiting disc is fixed on the top of the limiting column.

[0007] Further, each of the top tight device includes a top tight plate, the placing groove is provided with a top tight groove on the side away from the placing groove, two sliding plates are arranged on the two sides of the top tight groove, the two sliding plates form a sliding groove, the top tight plate is arranged in the top tight groove, and two sliding blocks are arranged on the sides corresponding to the two sliding grooves respectively, and the two sliding blocks are slidably arranged in the sliding groove; the side of the top tight plate away from the placing groove is connected to the side of the top tight groove through a spring column.

[0008] Further, the number of the spring columns is two, and the two spring columns uniformly connect the top tight plate and the top tight groove.

[0009] Further, the pressing device comprises a support frame, two movable plates and a plurality of pressing screw rods, the support frame is in an inverted U shape, two lower ends are fixed on the base, and a horizontal part is located directly above the circuit board, horizontal through grooves are arranged on the sides of the horizontal part of the support frame, a fixed groove is arranged downward on the top, the fixed groove and the horizontal through grooves are communicated to form a cross section in the shape of an inverted T, the two movable plates are arranged through the horizontal through grooves of the support frame and can move along the horizontal through grooves in the support frame, and the plurality of pressing screw rods are uniformly and transmissionally connected to the two movable plates.

[0010] Further, the locking device is a bolt, and a threaded hole is arranged on the movable plate at a position corresponding to the fixed groove, and the bolt is fixed to the movable plate in a threaded manner through the fixed groove.

[0011] Further, the top of the pressing screw rod is provided with a rotating disc, and the bottom is provided with a pressing disc.

[0012] Further, the length of the horizontal through groove is equal to or greater than the length of the placing groove.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The SMT furnace passing jig applied to the wave-soldering equipment places the circuit board in the placing groove, selectively uses the limiting device to limit the circuit board according to the position needing soldering on the circuit board, does not use the limiting device if the position of the limiting device rotating to the circuit board is the position needing soldering, adjusts the pressing device to press and fix the circuit board according to the soldering position, further fixes the circuit board through the top tight device, guarantees that the circuit board is tightly combined with the bottom of the placing groove, prevents problems such as air welding, false welding and poor welding in the soldering process, greatly reduces the defective rate of products, avoids human waste caused by rework, and improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following only constitute some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0016] Figure 1 It is an overall structural schematic view of the SMT furnace passing jig applied to the wave-soldering equipment (circuit board is placed).

[0017] Figure 2 It is a structural schematic view of the SMT furnace passing jig applied to the wave-soldering equipment in the present application. Figure 1 without the pressing device (circuit board is not placed).

[0018] Figure 3 It is an enlarged view of A in the SMT furnace passing jig applied to the wave-soldering equipment in the present application. Figure 2

[0019] Figure 4 It is a top view sectional view of the pressing device in the present application.

[0020] Figure 5 It is a structural sectional view of the locking device locking the movable plate in the present application.

[0021] Wherein, 1 - base, 2 - circuit board, 3 - placing groove, 4 - limiting device, 41 - limiting column, 42 - limiting disc, 43 - limiting plate, 5 - pressing device, 51 - pressing plate, 52 - pressing groove, 53 - sliding plate, 54 - sliding groove, 55 - sliding block, 56 - spring column, 6 - pressing device, 61 - support frame, 62 - movable plate, 63 - pressing screw rod, 64 - horizontal through groove, 65 - fixed groove, 66 - locking device, 67 - rotating disc, 68 - pressing disc, 69 - threaded hole. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0023] The circuit board in the present application is mainly a PCB board or a PCBA board.

[0024] Embodiment 1

[0025] ​This embodiment provides an SMT reflow fixture for wave soldering equipment, including a base 1 and a circuit board 2. The base 1 has a rectangular placement slot 3, such as... Figure 1 As shown, the circuit board 2 is placed in the placement groove 3; four limiting devices 4 are evenly provided on the base around the placement groove 3, and the limiting devices 4 can rotate to the top of the circuit board 2 to limit the circuit board 2; a clamping device 5 is provided on each of the four inner sides of the placement groove 3, and the clamping device 5 extends into the placement groove 3 to clamp the circuit board 2; a pressing device 6 is also provided on the base 1, which is located above the circuit board 2 and presses the circuit board 2 downward.

[0026] In this embodiment, the circuit board 2 is placed in the placement slot 3. The limiting device 4 can be selectively used to limit the circuit board 2 according to the position on the circuit board 2 that needs to be soldered. If the position of the limiting device 4 on the circuit board 2 is the position that needs to be soldered, the limiting device 4 is not used. At the same time, the pressing device 6 is adjusted according to the soldering position to press and fix the circuit board 2, and the pressing device 5 is used to further fix the circuit board 2, ensuring that the circuit board 2 is tightly attached to the bottom of the placement slot 3, preventing problems such as dry soldering, cold soldering, and weak soldering during the soldering process, greatly reducing the product defect rate, avoiding the manpower waste caused by rework, and improving production efficiency.

[0027] Example 2

[0028] The limiting device 4 in this embodiment includes a limiting post 41, a limiting disc 42 and a limiting plate 43. The limiting post 41 is fixed on the base 1, one end of the limiting plate 43 is rotatably connected to the limiting post 41, and the limiting disc 42 is fixed on the top of the limiting post 41.

[0029] The rest is the same as in Example 1.

[0030] In use, the limiting device 4 is selectively used according to the location on the circuit board 2 that requires soldering. The limiting device 4 is used by rotating the limiting plate 43 on the limiting post 41 and rotating it to the position above the circuit board 2 placed in the placement slot 3 to limit the circuit board 2. If the position above the circuit board 2 where the limiting plate 43 rotates is the position that requires soldering, the limiting device 4 is not used, and the circuit board 2 can be fixed by other limiting devices 4, pressing devices 6, and clamping devices 5.

[0031] Example 3

[0032] Each clamping device 5 in this embodiment includes a clamping plate 51, such as Figures 2-4As shown, the side of the placement groove 3 provided with the clamping device 5 is provided with a clamping groove 52 facing away from the placement groove, two sliding plates 53 are arranged on the two sides in the clamping groove 52, the two sliding plates 53 form a sliding groove 54, a clamping plate 51 is arranged in the clamping groove 52, and two sliding blocks 55 are arranged on the sides corresponding to the two sliding grooves 54, respectively, and the two sliding blocks 55 are slidably arranged in the sliding grooves 54; the side of the clamping plate 51 facing away from the placement groove 3 is connected to the corresponding side of the clamping groove 52 by a spring column 56, that is, to the side of the clamping groove 52 facing away from the placement groove 3.

[0033] The rest is the same as in Example 1.

[0034] In use, after the circuit board 2 is placed in the placement groove 3, the clamping plate 51 can clamp the circuit board 2 due to the elastic force of the spring column 56, the four-direction clamping plates 51 symmetrically clamp the circuit board 2, can fix the circuit board 2, and ensure the effect of passing through the furnace. The clamping device 5 in this embodiment can adapt to circuit boards 2 of different sizes, clamp and fix circuit boards 2 of different sizes, and has high flexibility. At the same time, the sliding groove 54 has a limiting effect on the movement and fixation of the clamping plate 51, and increases the clamping effect.

[0035] Example 4

[0036] The number of spring columns 56 in this embodiment is two, and the two spring columns 56 uniformly connect the clamping plate 51 and the clamping groove 52.

[0037] The rest is the same as in Example 3.

[0038] The two spring columns 56 can form a more stable clamping effect.

[0039] Example 5

[0040] The pressing device 6 of this embodiment includes a support frame 61, two movable plates 62, and a plurality of pressing lead screws 63. The support frame 61 is inverted U-shaped, and the two lower ends are fixed on the base 1. The horizontal part is located directly above the circuit board 2. The side of the horizontal part of the support frame 61 is provided with a horizontal through groove 64, and the top is provided with a fixed groove 65. The fixed groove 65 and the horizontal through groove 64 are connected to form a cross section in the shape of an inverted T. The two movable plates 62 pass through the support frame 61 through the horizontal through groove 64 and can move along the horizontal through groove 64 in the support frame 61. The plurality of pressing lead screws 63 are uniformly connected to the two movable plates 62. The locking device 66 is further included, and the movable plate 62 can be fixed on the support frame 61 through the locking device 66.

[0041] The top of the pressing screw rod 63 is provided with a rotating disc 67, and the bottom is provided with a pressing disc 68. The length of the horizontal through slot 64 is equal to or greater than the length of the placing slot 3, which refers to the length of the placing slot 3 in the parallel direction of the horizontal through slot 64. The length of the horizontal through slot 64 can facilitate the movement of the movable plate 62 and the pressing of the circuit board 2 by the pressing screw rod 63.

[0042] The rest is the same as in example 1.

[0043] In use, according to the position of tin soldering of each circuit board 2, the pressing screw rod 63 corresponding to the position not needing tin soldering is selectively lowered to press the circuit board 2 downward, and the movable plate 62 can also be moved in the horizontal slot 64. The position of the movable plate 62 and the pressing screw rod 63 is adjusted according to the specific tin soldering position, and the circuit board 2 is fixed by pressing the position not needing tin soldering downward.

[0044] Example 6

[0045] The locking device 66 of the present embodiment is a bolt, as shown in Figure 5 The position of the movable plate 62 corresponding to the fixed slot 65 is provided with a threaded hole 69, and the bolt is screwed down and fixed with the movable plate 62 through the fixed slot 65.

[0046] The rest is the same as in example 5.

[0047] The above-described embodiments are only preferred embodiments of the present application for description, and do not limit the design concept and scope of the present application. Without departing from the design concept of the present application, various modifications and improvements of the technical scheme of the present application made by ordinary engineering technicians in the art shall fall within the protection scope of the present application. The technical content claimed by the present application has been fully recorded in the technical requirements.

Claims

1. An SMT furnace pass jig applied to a wave soldering device, comprising a base and a circuit board, characterized in that: The base is provided with a rectangular placement slot, and the circuit board is placed in the placement slot.

2. The SMT furnace fixture applied to the wave soldering equipment according to claim 1, characterized in that: The limiting device comprises a limiting column, a limiting disc and a limiting plate.

3. The SMT furnace fixture applied to the wave soldering equipment according to claim 1, characterized in that: Each of the tightening devices comprises a tightening plate.

4. The SMT furnace fixture applied to the wave soldering equipment according to claim 3, characterized in that: The spring column is provided in two numbers, and the two spring columns uniformly connect the tightening plate and the tightening slot.

5. The SMT furnace fixture applied to the wave soldering equipment according to claim 1, characterized in that: The pressing device comprises a support frame, two movable plates and a plurality of pressing screw rods.

6. The SMT furnace fixture applied to the wave soldering equipment according to claim 5, characterized in that: The locking device is a bolt.

7. The SMT furnace fixture applied to the wave soldering equipment according to claim 6, characterized in that: The pressing screw rod is provided with a rotating disc at the top and a pressing disc at the bottom.

8. The SMT furnace fixture applied to the wave soldering equipment according to claim 6, characterized in that: The length of the horizontal through slot is equal to or greater than the length of the placement slot.

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