Positioning device for welding components on mainboard

Abstract

The utility model provides a positioning device for welding components on a mainboard, the positioning device comprises a track carrying chassis and a gland, a mainboard mounting position is arranged on the track carrying chassis, and one side of the gland is hinged with the track carrying chassis; the positioning device further comprises a height positioning assembly, the height positioning assembly comprises two or more height positioning modules, the multiple height positioning modules are all arranged on the rail carrying chassis, every two adjacent height positioning modules are arranged in a spaced mode, and a component installation position is arranged above each height positioning module. The height positioning module comprises a positioning base and a positioning convex column, the positioning base is detachably and fixedly connected with the rail carrying chassis, and the positioning convex column is arranged on the side, facing the gland, of the positioning base; and the strength of the positioning base is greater than that of the rail carrying chassis. The positioning device can improve the compatibility, is suitable for welding and positioning various types of components on main boards, and can ensure the welding quality and improve the production efficiency at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of welding tools, in particular to a positioning device used for welding components on a mainboard. Background Art

[0002] Components on the air conditioner mainboard, such as high-power devices IPM and DB devices, are soldered with selective wave soldering. Due to the large chain jitter of the selective wave soldering equipment, the components become skewed after soldering and the module height does not reach the specified value. In order to solve this problem, before wave soldering, it is necessary to use height-fixing plugs to fix the height of the components to ensure the height of the components. Then, manual positioning welding is used to fix them, and then they are placed in the equipment for selective wave soldering. This production method requires a lot of manpower and has low production efficiency. The manual height-fixing and positioning welding process wastes solder and labor costs. A large amount of welding is prone to fatigue and disease. If there is welding leakage and welding defects, it will cause abnormalities in the subsequent processes.

[0003] There is a positioning device for welding air conditioner components. All components are arranged on the same support plate. On the one hand, for different types of motherboard components, the layout positions of the components are different. Arranging them on the same support plate will make the welding compatibility of the positioning device poor. On the other hand, the support plate is also arranged in the area where the components are not arranged, which will cause material waste. The support plate and the bottom frame are not selected from different materials according to different needs, which will cause problems such as poor structural strength or high cost. In addition, there is no wire protection structure on it, which is easy to cause damage to the wires during high-temperature welding. Utility Model Content

[0004] The utility model aims to provide a positioning device for welding components on a mainboard, which can improve compatibility, is suitable for welding and positioning components on various types of mainboards, and can ensure welding quality and improve production efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides a positioning device for welding components on a mainboard, comprising a rail transport chassis and a pressure cover, a mainboard mounting position is arranged on the rail transport chassis, and one side of the pressure cover is hinged to the rail transport chassis; the positioning device also includes a height positioning assembly, the height positioning assembly includes more than two height positioning modules, the multiple height positioning modules are all arranged on the rail transport chassis, two adjacent height positioning modules are arranged at intervals, and a component mounting position is provided above each height positioning module; the height positioning module includes a positioning base and a positioning boss, the positioning base is detachably fixedly connected to the rail transport chassis, and the positioning boss is arranged on the side of the positioning base facing the pressure cover; the strength of the positioning base is greater than the strength of the rail transport chassis.

[0006] As can be seen from the above scheme, the corresponding components are positioned by arranging a plurality of height positioning modules at intervals. At the same time, since the positioning base of the height positioning module is detachably fixedly connected to the track conveying chassis, the height positioning module is individually designed. When welding different components on different motherboards, only the corresponding height positioning module can be replaced as needed, thereby improving compatibility and being applicable to the welding positioning of components on various types of motherboards. At the same time, the height positioning module can realize the precise positioning of components relative to the circuit board, thereby ensuring the welding quality and improving production efficiency. In addition, the positioning base of the welding area is made of a high-strength material alone, so that the error of welding height consistency is extremely small, further ensuring the welding quality.

[0007] A preferred solution is that the positioning base is made of a titanium alloy material; and / or the track transport chassis is made of a metal material.

[0008] It can be seen that the positioning base made of titanium alloy material has strong physical stability in terms of heat resistance and impact resistance, and can ensure the consistency of welding height.

[0009] A further solution is that the positioning base includes a supporting portion and a connecting portion, and the positioning boss is fixed on the supporting portion; the mainboard mounting position is arranged along the horizontal direction, the axial direction of the positioning boss extends along the vertical direction, and the connecting portion extends along the horizontal direction; a positioning groove is opened on the rail transport chassis, and the opening of the positioning groove faces the pressure cover, and the connecting portion can be inserted into the positioning groove from the opening along the vertical direction, and the connecting portion and the positioning groove are limited and matched.

[0010] It can be seen that the cooperation between the connection part and the positioning groove can achieve the fixation of the positioning base relative to the track transport chassis, and a stable connection between the two can be achieved even under a relatively small tightening force.

[0011] A further solution is that a first fixing hole is formed on the connecting portion, a second fixing hole is formed on the bottom wall of the positioning groove, and the fixing member passes through the first fixing hole and the second fixing hole in sequence.

[0012] This shows that the stability of the connection between the positioning base and the track transport chassis is further improved.

[0013] A further solution is that at least one positioning base includes more than two connecting parts; each connecting part in the same positioning base is arranged on the same side of the corresponding positioning base; or each connecting part in the same positioning base is respectively arranged on two adjacent sides of the corresponding positioning base.

[0014] A preferred solution is that a wire harness protection box is also provided on the track transport chassis, and the wire harness protection box is arranged on a side of the track transport chassis away from the gland.

[0015] It can be seen from this that when the motherboard product is installed, the wiring harness is placed in the wiring harness protection box at the same time. The wiring harness protection box can protect the wires and prevent the high temperature of welding from damaging the wires.

[0016] A further solution is that the wire harness protection box and the height positioning assembly are arranged opposite to each other in the width direction of the rail transport chassis; a wire passing groove is opened on the side wall of the wire harness protection box close to the height positioning assembly in the width direction, and the notch of the wire passing groove faces the side of the pressure cover.

[0017] It can be seen that the opening of the wire duct makes it easy for the wires to pass through the wire duct into the wire harness protection box.

[0018] A preferred solution is that at least one height positioning module is provided with more than two positioning bosses, and the positioning bosses are arranged at intervals on the positioning base.

[0019] It can be seen that multiple positioning bosses can further achieve accurate positioning of components.

[0020] A preferred solution is that a device elastic positioning column is provided on the pressure cover, and the device elastic positioning column is arranged opposite to the component mounting position; and / or a mainboard elastic positioning column is also provided on the pressure cover, and a mainboard positioning column is provided at the mainboard mounting position, and the mainboard elastic positioning column corresponds to the mainboard positioning column one by one and is arranged opposite to it.

[0021] It can be seen that the elastic positioning column and the positioning boss cooperate to achieve compression of corresponding components, and the mainboard elastic positioning column cooperates with the mainboard positioning column to achieve compression of the mainboard.

[0022] A preferred solution is that the fixed end of the pressure cover is provided with an upper cover fixing buckle, the fixed end of the pressure cover is arranged opposite to the hinged end of the pressure cover, and a chassis fixing buckle is also provided on the track transport chassis, and the upper cover fixing buckle is clamped with the chassis fixing buckle; and / or the number of mainboard mounting positions, pressure covers and height positioning components are more than two, and one mainboard mounting position, one pressure cover and one height positioning component are arranged correspondingly.

[0023] It can be seen that the upper cover fixing buckle and the chassis fixing buckle are connected to facilitate the locking of the mainboard and the corresponding components on it. More than two mainboard mounting positions, pressure covers and height positioning components can realize the simultaneous welding of multiple boards, thereby further improving production efficiency. In addition, multiple mainboards can be fixed at the same time, which is convenient to open and close. It not only has the function of fixing components such as IPM and DB, but also has the function of correcting P-board deformation, providing important guarantee for height welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the positioning device embodiment of the utility model after being assembled with the main board and components.

[0025] Figure 2It is a structural diagram of an embodiment of the positioning device of the utility model.

[0026] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0027] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle.

[0028] Figure 5 yes Figure 2 A partial enlarged view of point C in the middle.

[0029] Figure 6 It is a structural diagram of a track transport chassis in an embodiment of the positioning device of the utility model.

[0030] Figure 7 yes Figure 6 A partial enlarged view of point D in the middle.

[0031] Figure 8 It is a structural diagram of the IPM height positioning module in the positioning device embodiment of the utility model.

[0032] Fig. 9 It is a structural diagram of the IPM and DB height positioning modules in the positioning device embodiment of the utility model.

[0033] Fig.10 It is a structural diagram of the DB height positioning module in the positioning device embodiment of the utility model.

[0034] Fig.11 It is a structural diagram of a wire harness protection box in an embodiment of the positioning device of the utility model.

[0035] Fig.12 It is a structural diagram of a gland in an embodiment of a positioning device of the utility model.

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0037] See also Figure 1 and Figure 2 The positioning device for welding components on a mainboard of this embodiment includes a track conveying chassis 1, a pressure cover 2, a height positioning component 3 and a wire harness protection box 4.

[0038] Two mainboard mounting positions 11 are provided on the rail transport chassis 1. The number of the pressure cover 2 and the height positioning assembly 3 are both two. One mainboard mounting position 11, one pressure cover 2 and one height positioning assembly 3 are provided correspondingly. The mainboard mounting position 11 is used to place the mainboard, and the height positioning assembly 3 is used to position various components. The periphery of the mainboard mounting position 11 is also provided with a wide side reinforcement strip 14 and a long side reinforcement strip 15, and the wide side reinforcement strip 14 and the long side reinforcement strip 15 are both fixedly connected to the rail transport chassis 1.

[0039] The hinged ends of the two pressure covers 2 are hinged to the rail transport chassis 1, and the fixed ends of the pressure covers 2 are provided with upper cover fixing buckles 21. The fixed end of the same pressure cover 2 is arranged opposite to the hinged end of the pressure cover 2. Two chassis fixing buckles 12 are also provided on the rail transport chassis 1, and the upper cover fixing buckles 21 are clamped with the corresponding chassis fixing buckles 12.

[0040] The height positioning assembly 3 includes three height positioning modules, which are all arranged on the track transport chassis 1, and two adjacent height positioning modules are arranged at intervals. At least one component installation position 5 is provided above each height positioning module.

[0041] See also Figures 2 to 10 The three height positioning modules in this embodiment are an IPM height positioning module 301, an IPM and DB height positioning module 302, and a DB height positioning module 303. A component mounting position 5 is arranged above the IPM height positioning module 301, and an IPM device 61 is arranged on the component mounting position 5. Two component mounting positions 5 are arranged above the IPM and DB height positioning module 302, and an IPM device 62 and a DB device 63 are arranged on the two component mounting positions respectively. A component mounting position 5 is arranged above the DB height positioning module 303, and a DB device 64 is arranged on the component mounting position 5.

[0042] Each height positioning module includes a positioning base 31 and a positioning boss 32 . The positioning base 31 is detachably fixedly connected to the track conveying chassis 1 . The positioning boss 32 is arranged on a side of the positioning base 31 facing the pressure cover 2 .

[0043] The strength of each positioning base 31 is greater than that of the track transport chassis 1. Preferably, each positioning base 31 is made of titanium alloy material, and the track transport chassis 1 is made of metal material. The positioning base 31 made of titanium alloy material has strong physical stability in terms of heat resistance and impact resistance, and can ensure the consistency of welding height.

[0044] Each positioning base 31 includes a supporting portion 311 and a connecting portion 312, and the positioning boss 32 is fixed to the supporting portion 311 by a screw (not shown). The mainboard mounting position 11 is arranged along the horizontal direction, the axial direction of the positioning boss 32 extends along the vertical direction, and the connecting portion 312 extends along the horizontal direction. A positioning groove 13 is provided on the rail conveying chassis 1, and the opening of the positioning groove 13 faces the pressure cover 2. The connecting portion 312 can be inserted into the positioning groove 13 from the opening along the vertical direction, and the connecting portion 312 is limitedly matched with the positioning groove 13. A first fixing hole 313 is provided on the connecting portion 312, and a second fixing hole 131 is provided on the bottom wall of the positioning groove 13. The fixing member (not shown) passes through the first fixing hole 313 and the second fixing hole 131 in sequence.

[0045] See also Figure 3 and Fig. 9 The positioning base 31 of the IPM and DB height positioning module 302 includes two connecting parts 312, and each connecting part 312 in the positioning base 31 is arranged on the same side of the corresponding positioning base 31. Figure 4 and Figure 8 The positioning base 31 of the IPM height positioning module 301 also includes two connecting parts 312, and each connecting part 312 in the positioning base 31 is respectively arranged on two adjacent sides of the corresponding positioning base 31. Figure 5 and Fig.10 The positioning base 31 of the DB height positioning module 303 includes a connecting portion 312 .

[0046] The IPM and DB height positioning modules 302 are provided with three positioning bosses 32, which are arranged at intervals on the corresponding positioning bases 31. The IPM height positioning module 301 is provided with two positioning bosses 32, which are arranged at intervals on the corresponding positioning bases 31. The DB height positioning module 303 is provided with one positioning boss 32. Fig.12 As shown, the pressure cover 2 is provided with a device elastic positioning column 22, and the device elastic positioning column 22 is arranged opposite to the component installation position 5. In addition, the pressure cover 2 is also provided with a mainboard elastic positioning column 23, and the mainboard installation position 11 is provided with a mainboard positioning column 33, and the mainboard elastic positioning column 23 corresponds to the mainboard positioning column 33 one by one and is arranged opposite to each other. The device elastic positioning column 22 and the positioning boss 32 cooperate to achieve the compression of the corresponding components, and the mainboard elastic positioning column 23 cooperates with the mainboard positioning column 33 to achieve the compression of the mainboard. The device elastic positioning column 22 and the mainboard elastic positioning column 23 are both made of elastic materials such as rubber and silicone, or both include abutment columns and springs, and the elastic force of the spring forces the abutment columns to compress the corresponding positioning boss 32 or the mainboard positioning column 33.

[0047] See also Figure 1 and Fig.11The wire harness protection box 4 is fixed on the track conveying chassis 1, and the wire harness protection box 4 is arranged on the side of the track conveying chassis 1 away from the gland 2. When the motherboard product is installed, the wire harness is placed in the wire harness protection box 4 at the same time. The wire harness protection box 4 can protect the wires and prevent the wires from being damaged by the high temperature of welding.

[0048] The harness protection box 4 and the height positioning assembly 3 are arranged opposite to each other in the width direction of the track conveying chassis 1. A wire passing groove 41 is provided on the side wall of the harness protection box 4 close to the height positioning assembly 3 in the width direction, and the notch of the wire passing groove 41 faces the side of the gland 2.

[0049] As can be seen from the above, the corresponding components are positioned by arranging a plurality of height positioning modules at intervals. At the same time, since the positioning base of the height positioning module is detachably fixedly connected to the track conveying chassis, the height positioning module is individually designed. When welding different components on different motherboards, only the corresponding height positioning module can be replaced as needed, thereby improving compatibility and being applicable to the welding positioning of components on various types of motherboards. At the same time, the height positioning module can realize the precise positioning of components relative to the circuit board, thereby ensuring the welding quality and improving production efficiency. In addition, the positioning base of the welding area is made of a high-strength material alone, so that the error of welding height consistency is extremely small, further ensuring the welding quality. More than two motherboard mounting positions, pressure covers and height positioning components can realize the simultaneous welding of multiple boards, thereby further improving production efficiency. In addition, multiple motherboards can be fixed at the same time, which is convenient to open and close. It not only has the function of fixing components such as IPM and DB, but also has the function of correcting P-board deformation, providing important guarantee for height welding.

[0050] In addition, the number of the mainboard mounting position, the pressure cover and the height positioning component can also be one, or more than two, and one mainboard mounting position, one pressure cover and one height positioning component are correspondingly arranged. The number of height positioning modules in each height positioning component is more than two. The number and arrangement of the positioning bosses on each height positioning module can also be changed as needed. The above changes can also achieve the purpose of the utility model.

[0051] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A positioning device for welding components on a mainboard, comprising a track transport chassis, a pressure cover and a height positioning assembly, wherein a mainboard mounting position is provided on the track transport chassis, and one side of the pressure cover is hinged to the track transport chassis; Features: The height positioning assembly includes more than two height positioning modules, and the plurality of height positioning modules are arranged on the track transport chassis, and two adjacent height positioning modules are arranged at intervals, and a component installation position is provided above each height positioning module; The height positioning module comprises a positioning base and a positioning boss, wherein the positioning base is detachably fixedly connected to the track conveying chassis, and the positioning boss is arranged on a side of the positioning base facing the gland; The strength of the positioning base is greater than the strength of the track transport chassis.

2. The positioning device for soldering components on a mainboard according to claim 1, characterized in that: The positioning base is made of titanium alloy material; and / or The track transport chassis is made of metal material.

3. The positioning device for soldering components on a mainboard according to claim 1, characterized in that: The positioning base comprises a supporting portion and a connecting portion, and the positioning boss is fixed on the supporting portion; The mainboard mounting position is arranged along the horizontal direction, the axial direction of the positioning boss extends along the vertical direction, and the connecting portion extends along the horizontal direction; A positioning groove is provided on the rail transport chassis, the opening of the positioning groove faces the pressure cover, and the connecting part can be installed into the positioning groove from the opening along the vertical direction, and the connecting part is limitedly matched with the positioning groove.

4. The positioning device for soldering components on a mainboard according to claim 3, characterized in that: The connecting portion is provided with a first fixing hole, the bottom wall of the positioning groove is provided with a second fixing hole, and the fixing member passes through the first fixing hole and the second fixing hole in sequence.

5. The positioning device for soldering components on a mainboard according to claim 3, characterized in that: At least one of the positioning bases includes more than two connecting parts; The connecting parts in the same positioning base are arranged on the same side of the corresponding positioning base; or The connection parts in the same positioning base are respectively arranged on two adjacent sides of the corresponding positioning base.

6. The positioning device for soldering components on a mainboard according to any one of claims 1 to 5, characterized in that: A wire harness protection box is also provided on the track transport chassis, and the wire harness protection box is arranged on a side of the track transport chassis away from the gland.

7. The positioning device for soldering components on a mainboard according to claim 6, characterized in that: The harness protection box and the height positioning assembly are arranged opposite to each other in the width direction of the track transport chassis; The wire harness protection box is provided with a wire passing groove on the side wall close to the height positioning assembly in the width direction, and the notch of the wire passing groove faces one side of the pressure cover.

8. The positioning device for soldering components on a mainboard according to any one of claims 1 to 5, characterized in that: At least one of the height positioning modules is provided with more than two positioning bosses, and the positioning bosses are arranged at intervals on the positioning base.

9. The positioning device for soldering components on a mainboard according to any one of claims 1 to 5, characterized in that: The gland is provided with a device elastic positioning column, and the device elastic positioning column is arranged opposite to the component installation position; and / or The pressure cover is also provided with a mainboard elastic positioning column, and the mainboard mounting position is provided with a mainboard positioning column, and the mainboard elastic positioning column corresponds to the mainboard positioning column one by one and is relatively arranged.

10. The positioning device for soldering components on a mainboard according to any one of claims 1 to 5, characterized in that: The fixed end of the gland is provided with an upper cover fixing buckle, the fixed end of the gland is arranged opposite to the hinged end of the gland, the track transport chassis is also provided with a chassis fixing buckle, the upper cover fixing buckle is snap-connected with the chassis fixing buckle; and / or The number of the mainboard mounting position, the pressure cover and the height positioning component is more than two, and one mainboard mounting position, one pressure cover and one height positioning component are correspondingly arranged.

Images