Furnace passing jig with protection structure

Abstract

The utility model discloses a furnace-passing jig with a protective structure. The furnace-passing jig comprises a jig tray, a mounting module is arranged on the jig tray, a hold-down module is arranged on the jig tray, a tray mounting screw rod is mounted on the jig tray, the mounting module comprises a transverse positioning block, the transverse positioning block is mounted on the jig tray, and a longitudinal positioning block is mounted on the jig tray; according to the utility model, the circuit board mounting groove is arranged on the jig tray for mounting the circuit board, and the positioning blocks are arranged at the transverse and longitudinal positions in the circuit board mounting groove for guiding and limiting the circuit board, so that the circuit board can be accurately clamped into the circuit board welding groove; the circuit board buckle continuously presses the circuit board below under the action of the buckle spring, the circuit board is prevented from moving during welding and affecting the welding quality, meanwhile, the board taking groove is formed in the circuit board mounting groove, one corner of the circuit board can be lifted through the board taking groove after welding is completed, and the circuit board can be conveniently and rapidly taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a furnace jig with a protective structure. Background Art

[0002] The tinning furnace fixture is an auxiliary tool specially used in the PCB (printed circuit board) soldering process in SMT (surface mount technology) processing. They play the role of supporting, fixing and protecting the PCB board during the soldering process to ensure the soldering quality and improve production efficiency. The materials of the tinning furnace fixture can include domestic or imported glass fiber materials, imported aluminum plates, stainless steel materials, synthetic stone materials, and marble plates with added carbon fiber materials. These materials have the characteristics of high temperature resistance, low thermal conductivity, and small expansion, and can maintain physical properties without deformation in high temperature environments.

[0003] Common furnace fixtures are to fix the circuit board in the installation slot. Although it can play a good limiting role, after welding is completed, the plate is completely stuck in the installation slot and it is inconvenient to remove it manually. When inserting electronic components on the circuit board, it will cause the components to be not fully inserted to the bottom. At this time, direct welding will affect the quality of the finished product. Therefore, a furnace fixture with a protective structure is needed to meet people's needs. Utility Model Content

[0004] The purpose of the utility model is to provide a furnace fixture with a protective structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a furnace jig with a protective structure, comprising a jig tray; a mounting module is provided on the jig tray, a holding module is provided on the jig tray, and a tray mounting screw is installed on the jig tray;

[0006] Preferably, the installation module includes a transverse positioning block, which is installed on a jig tray, and a longitudinal positioning block is installed on the jig tray. Positioning block mounting bolts are installed on both the transverse positioning block and the longitudinal positioning block, and a snap-on fixing shaft is installed on the jig tray.

[0007] Preferably, the holding module includes a jig chuck, which is installed above the jig tray, a card plate pressure rod is installed on the jig chuck, a pressure plate is installed below the card plate pressure rod, a pressure rod spring is installed between the jig chuck and the pressure plate, and the card plate pressure rod is installed in the pressure rod spring.

[0008] Preferably, a chuck pressure rod hole is formed on the fixture chuck, the card plate pressure rod is installed in the chuck pressure rod hole, and a chuck installation hole is formed on the fixture chuck.

[0009] Preferably, the tray mounting screw is installed in the chuck mounting hole, a nut is installed on the tray mounting screw, and the nut is installed above the fixture chuck.

[0010] Preferably, a circuit board mounting groove is formed on the jig tray, the transverse positioning block, the longitudinal positioning block and the buckle fixing shaft are installed in the circuit board mounting groove, the circuit board mounting groove is formed with a board removal groove, and the circuit board mounting groove is formed with a circuit board welding groove.

[0011] Preferably, positioning block bolt holes are formed on the transverse positioning block and the longitudinal positioning block, and the positioning block mounting bolts are mounted in the positioning block bolt holes.

[0012] Preferably, a circuit board buckle is installed on the buckle fixing shaft, a buckle limiting plate is installed on the top of the buckle fixing shaft, and a buckle spring is installed between the circuit board buckle and the buckle limiting plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The utility model installs the circuit board by opening a circuit board installation groove on the jig tray, and installing positioning blocks in the horizontal and vertical positions of the circuit board installation groove to guide and limit the circuit board, so that the circuit board can be accurately inserted into the circuit board welding groove, and a circuit board buckle is provided on the circuit board installation groove. Under the action of the buckle spring, the circuit board buckle continuously presses the circuit board below to prevent the circuit board from moving during welding and affecting the welding quality. At the same time, a board removal groove is opened on the circuit board installation groove. After welding is completed, a corner of the circuit board can be lifted up through the board removal groove to facilitate and quickly remove the circuit board.

[0015] (2) The jig chuck is installed on the jig pallet through the pallet mounting screw. The pressing piece on the jig chuck contacts the electronic component below. Under the action of the pressure rod spring, the pressing piece can press and hold the plug-in components that do not pass the height, thereby avoiding affecting the welding quality due to the floating height of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a furnace fixture with a protective structure proposed by the utility model;

[0017] Figure 2 This is a structural schematic diagram of a fixture tray and a buckle limit plate of a furnace fixture with a protective structure proposed by the utility model;

[0018] Figure 3 This is a structural schematic diagram of a longitudinal positioning block and circuit board buckle of a furnace fixture with a protective structure proposed by the utility model;

[0019] Figure 4The utility model discloses a structural schematic diagram of a fixture chuck and a pressing sheet of a furnace-passing fixture with a protective structure.

[0020] In the figure: 1. fixture tray; 2. mounting module; 3. holding module; 4. nut; 5. tray mounting screw; 6. board removal slot; 20. circuit board welding slot; 21. horizontal positioning block; 22. longitudinal positioning block; 23. positioning block bolt hole; 24. positioning block mounting bolt; 25. circuit board buckle; 26. buckle fixing shaft; 27. buckle spring; 28. buckle limit plate; 29. ​​circuit board mounting slot; 30. fixture chuck; 31. chuck mounting hole; 32. chuck pressure rod; 33. pressure rod spring; 34. chuck pressure rod hole; 35. pressing piece. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1-4 The utility model provides a technical solution: a furnace jig with a protective structure, comprising a jig tray 1; in order to facilitate installation and disassembly, the jig tray 1 is provided with a mounting module 2, the jig tray 1 is provided with a pressing module 3, and the jig tray 1 is provided with a tray mounting screw 5, the circuit board is installed through the mounting module 2, and the components are pressed and held through the pressing module 3;

[0023] In order to realize the function of convenient installation and disassembly, the installation module 2 includes a lateral positioning block 21, which is installed on the jig tray 1, and a longitudinal positioning block 22 is installed on the jig tray 1. The lateral positioning block 21 and the longitudinal positioning block 22 are both installed with positioning block mounting bolts 24, and a buckle fixing shaft 26 is installed on the jig tray 1. The tray mounting screw 5 is installed in the chuck mounting hole 31, and the tray mounting screw 5 is installed with a nut 4, which is installed above the jig chuck 30. The jig tray 1 is provided with a circuit board mounting groove. 29, the horizontal positioning block 21, the longitudinal positioning block 22 and the buckle fixing shaft 26 are installed in the circuit board installation groove 29, the circuit board installation groove 29 is provided with a board removal groove 6, the circuit board installation groove 29 is provided with a circuit board welding groove 20, the horizontal positioning block 21 and the longitudinal positioning block 22 are provided with positioning block bolt holes 23, the positioning block mounting bolts 24 are installed in the positioning block bolt holes 23, the buckle fixing shaft 26 is provided with a circuit board buckle 25, the buckle fixing shaft 26 is provided with a buckle limiting plate 28, the circuit board buckle 25 and the buckle A snap spring 27 is installed between the limit plates 28. The circuit board is placed on the circuit board installation groove 29. The circuit board is guided according to the positions of the horizontal positioning block 21 and the longitudinal positioning block 22, so that the circuit board can be accurately inserted into the circuit board welding groove 20. When the circuit board is inserted into the circuit board welding groove 20, the circuit board snap 25 is lifted to make the circuit board snap 25 higher than the thickness of the circuit board. The circuit board snap 25 is rotated to make the protruding part of the circuit board snap 25 rotate to the top of the circuit board. Then the circuit board snap 25 is released, and the circuit board snap 25 is reset under the elastic action of the snap spring 27. At this time, the circuit board snap 25 is continuously pressed on the circuit board by the elastic force of the snap spring 27. A chamfer is provided below the circuit board welding groove 20, so that the tin liquid can better contact with the components in the circuit board welding groove 20 during wave soldering, which can improve the welding quality to a certain extent. After the welding is completed, the jig chuck 30 is removed, and the protruding part of the circuit board snap 25 is separated from the surface of the circuit board. Through the board removal groove 6, a corner of the circuit board can be tilted up to facilitate the removal of the circuit board.

[0024] The working principle is as follows: place the circuit board on the circuit board mounting groove 29, guide the circuit board according to the positions of the horizontal positioning block 21 and the longitudinal positioning block 22, so that the circuit board can be accurately inserted into the circuit board welding groove 20. After the circuit board is inserted into the circuit board welding groove 20, lift the circuit board buckle 25 to make the circuit board buckle 25 higher than the thickness of the circuit board, rotate the circuit board buckle 25, so that the protruding part of the circuit board buckle 25 is rotated to the top of the circuit board, and then release the circuit board buckle 25. The circuit board buckle 25 is reset under the elastic action of the buckle spring 27. At this time, the circuit board buckle 25 is continuously pressed on the circuit board by the elastic force of the buckle spring 27. Align the chuck mounting hole 31 on the jig chuck 30 with the tray mounting screw 5, so that the tray mounting screw 5 passes through the jig chuck 30, so that the pressing piece 35 on the jig chuck 30 naturally contacts the interpenetrating components on the circuit board, which can be Apply a little pressure to make the pressing piece 35 close to the component. When the jig chuck 30 is subjected to pressure, the pressure rod spring 33 is compressed, and the cardboard pressure rod 32 will move in the chuck pressure rod hole 34 according to the different heights of the components. When the jig chuck 30 is pressed down, the nut 4 is screwed into the tray mounting screw 5 at the same time to fix the jig chuck 30 to prevent the circuit board welding groove 20 from rebounding under the action of the pressure rod spring 33. At this time, the pressing piece 35 can continue to press the interspersed components under the action of the pressure rod spring 33. A chamfer is provided under the circuit board welding groove 20, so that the tin liquid can better contact the components in the circuit board welding groove 20 during wave soldering, which can improve the welding quality to a certain extent. After the welding is completed, the jig chuck 30 is removed, and the protruding part of the circuit board buckle 25 is separated from the surface of the circuit board. Through the board removal groove 6, a corner of the circuit board can be lifted up to facilitate the removal of the circuit board.

[0025] Example 2: Figure 1-4In order to prevent the floating height of the components from affecting the welding quality, the holding module 3 includes a jig chuck 30, which is installed above the jig tray 1. A cardboard pressure rod 32 is installed on the jig chuck 30, and a pressure sheet 35 is installed below the cardboard pressure rod 32. A pressure rod spring 33 is installed between the jig chuck 30 and the pressure sheet 35. The cardboard pressure rod 32 is installed in the pressure rod spring 33. A chuck pressure rod hole 34 is opened on the jig chuck 30, and the cardboard pressure rod 32 is installed in the chuck pressure rod hole 34. A chuck mounting hole 31 is opened on the jig chuck 30. The chuck mounting hole 31 on the jig chuck 30 is aligned with the tray mounting screw 5, so that the tray mounting screw 5 passes through The jig chuck 30 allows the pressure plate 35 on the jig chuck 30 to naturally contact the inserted components on the circuit board. A little pressure can be applied to make the pressure plate 35 close to the components. When the jig chuck 30 is subjected to pressure, the pressure rod spring 33 is compressed, and the card pressure rod 32 will move in the chuck pressure rod hole 34 according to the different heights of the components. When the jig chuck 30 is pressed down, the nut 4 is screwed into the tray mounting screw 5 at the same time to fix the jig chuck 30 and prevent the circuit board welding groove 20 from rebounding under the action of the pressure rod spring 33. At this time, the pressure plate 35 can continue to press and hold the inserted components under the action of the pressure rod spring 33, and the remaining features are the same as those in Example 1.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furnace jig with a protective structure, comprising a jig tray (1); characterized in that: The jig tray (1) is provided with a mounting module (2), the jig tray (1) is provided with a holding module (3), and the jig tray (1) is provided with a tray mounting screw (5); The mounting module (2) comprises a transverse positioning block (21), the transverse positioning block (21) being mounted on a fixture tray (1), a longitudinal positioning block (22) being mounted on the fixture tray (1), positioning block mounting bolts (24) being mounted on both the transverse positioning block (21) and the longitudinal positioning block (22), and a buckle fixing shaft (26) being mounted on the fixture tray (1).

2. The furnace jig with a protective structure according to claim 1, characterized in that: The holding module (3) comprises a jig chuck (30), wherein the jig chuck (30) is mounted above the jig tray (1), a cardboard pressure rod (32) is mounted on the jig chuck (30), a pressure plate (35) is mounted below the cardboard pressure rod (32), a pressure rod spring (33) is mounted between the jig chuck (30) and the pressure plate (35), and the cardboard pressure rod (32) is mounted inside the pressure rod spring (33).

3. The furnace jig with a protective structure according to claim 2, characterized in that: The fixture chuck (30) is provided with a chuck pressure rod hole (34), the clamping plate pressure rod (32) is installed in the chuck pressure rod hole (34), and the fixture chuck (30) is provided with a chuck installation hole (31).

4. The furnace jig with a protective structure according to claim 1, characterized in that: The tray mounting screw (5) is mounted in the chuck mounting hole (31), a nut (4) is mounted on the tray mounting screw (5), and the nut (4) is mounted above the fixture chuck (30).

5. The furnace jig with a protective structure according to claim 1, characterized in that: The jig tray (1) is provided with a circuit board installation groove (29), the transverse positioning block (21), the longitudinal positioning block (22) and the buckle fixing shaft (26) are installed in the circuit board installation groove (29), the circuit board installation groove (29) is provided with a board removal groove (6), and the circuit board installation groove (29) is provided with a circuit board welding groove (20).

6. The furnace jig with a protective structure according to claim 1, characterized in that: The transverse positioning block (21) and the longitudinal positioning block (22) are both provided with positioning block bolt holes (23), and the positioning block mounting bolts (24) are mounted in the positioning block bolt holes (23).

7. The furnace jig with a protective structure according to claim 1, characterized in that: A circuit board buckle (25) is mounted on the buckle fixing shaft (26), a buckle limiting plate (28) is mounted on the top of the buckle fixing shaft (26), and a buckle spring (27) is mounted between the circuit board buckle (25) and the buckle limiting plate (28).

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