Welding device for microelectronic assembly

Abstract

The utility model discloses a welding device for microelectronic assembly, which comprises a printed circuit board, a chip and a plurality of pins. The welding device comprises a mounting support arranged on an operating platform, the mounting support comprises a mounting plate and an assembly welding table arranged in the middle of the mounting plate; the first clamp assemblies are respectively arranged on the left side and the right side of the mounting plate and are symmetrically distributed; the welding fixture further comprises second fixture assemblies arranged on the front side and the rear side of the mounting plate respectively, the two second fixture assemblies are symmetrically distributed and provided with first chucks and second chucks, and the first chucks and the second chucks are used for limiting and switching the welding positions of the printed circuit board and the chip. According to the utility model, through the arrangement of the first clamp assembly and the second clamp assembly, while the welding stability of the printed circuit board and the chip and the welding stability of the printed circuit board and the plurality of pins are ensured, the circumferential welding of the chip is further realized by matching with the dynamic switching of the first chuck and the second chuck where the second clamp assembly is located.

Description

Technical Field

[0001] The utility model relates to the technical field of microelectronic assembly, in particular to a welding device for microelectronic assembly. Background Art

[0002] Microelectronic component assembly is a technical process that assembles microelectronic devices and micro-components into applicable and manufacturable electronic components, parts or a system based on electrical schematics or logic diagrams, using microelectronic technology and high-density assembly technology. In the process of welding microelectronics, the welding process must be completed under the premise of limiting the position of each component. The existing microelectronic assembly welding device still has the following disadvantages during the welding process;

[0003] First, the microelectronic structure is tiny, and the fixing steps before welding and assembly are difficult and lack stability, especially in the welding of pins. It is difficult to ensure that each component can be stably limited at the welding position, which affects the welding quality.

[0004] Second, during the welding process, the position of the action point of the fixture needs to be switched to meet welding conditions such as circumferential welding. For this purpose, a welding device for microelectronic assembly is proposed. Utility Model Content

[0005] The utility model aims to provide a welding device for microelectronic assembly, which ensures the welding stability between a printed circuit board and a chip and between a printed circuit board and a plurality of pins by setting a first clamp component and a second clamp component, and cooperates with the dynamic switching of the first clamp head and the second clamp head where the second clamp component is located to further realize the circumferential welding of the chip.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding device for microelectronic assembly, the microelectronics consists of a printed circuit board, a chip, and a plurality of pins: including an operating platform, a mounting support arranged on the operating platform, the mounting support including a mounting plate, and an assembly welding table arranged in the middle of the mounting plate, the assembly welding table providing a support platform for welding the printed circuit board and the chip; and first clamp components respectively arranged on the left and right sides of the mounting plate and symmetrically distributed, the first clamp components acting on both sides of the printed circuit board for limiting and fixing it and realizing assembly compaction before welding a plurality of pins and the printed circuit board; and also including second clamp components respectively arranged on the front and rear sides of the mounting plate, the two groups of second clamp components are symmetrically distributed and have a first clamp and a second clamp, the first clamp and the second clamp are used for limiting and switching the welding position of the printed circuit board and the chip.

[0007] Preferably, the first clamp assembly includes two driving assemblies, and a first pressing assembly and a second pressing assembly arranged between the two driving assemblies. When the driving assembly is running, it drives the first pressing assembly to press downward to complete the compression of several pins and the welding positions of the printed circuit board, and drives the second pressing assembly to press toward the middle, so that the second pressing assembly acts on both sides of the printed circuit board and is used to limit and fix the printed circuit board.

[0008] Preferably, each group of driving components includes an L-shaped frame, and a first driving block and a second driving block rotatably connected to the two ends of the L-shaped frame respectively through a first pin shaft; it also includes a driving member, the driving member includes a U-shaped portion and a first rod portion, the U-shaped portion is rotatably connected to the first driving block through a second pin shaft arranged thereon, the first rod portion passes through the interior of the second driving block and is sequentially provided with a sleeve body and a connecting member, the sleeve body and the first rod portion are through-set; and a plurality of first electric telescopic rods arranged between the connecting member and the sleeve body; the first buckling assembly and the second buckling assembly are respectively arranged at the bottom of the first driving block and the second driving block.

[0009] Preferably, the first clamping assembly includes a connecting rod fixed at the bottom of the first driving block where the two groups of driving assemblies are located, and a connecting frame arranged on the connecting rod; it also includes a clamping piece arranged at one end of the connecting frame away from the connecting rod, and the clamping piece is composed of a support rod, and a plurality of clamping rods below the support rod, each clamping rod includes a second rod portion, and a fork portion at the bottom end of the second rod portion, and the fork portion acts on both ends of the pin.

[0010] Preferably, the second clamping assembly includes an L-shaped rod, which is connected to the bottom of the two second driving blocks, and two clamping rods arranged on the side of the vertical section of the L-shaped rod close to the printed circuit board, and the ends of the two clamping rods away from the L-shaped rod act on the side wall of the printed circuit board.

[0011] Preferably, each group of second clamping assemblies includes a seat body, and a first limiting groove and a second limiting groove are respectively opened in the middle and both sides of the seat body; and also includes a first chuck and a second chuck respectively arranged in the first limiting groove and the second limiting groove; the first chuck includes a first transmission plate limitedly installed in the first limiting groove, and a clamping strip fixed to the first transmission plate on the side close to the chip; the second chuck includes a second transmission plate slidably installed in each of the second limiting grooves, a mounting block arranged on the second transmission plate, and a second electric telescopic rod arranged on the mounting block, and the clamping block fixed at the telescopic end of the second electric telescopic rod can contact the side wall of the chip; transmission components are also respectively arranged between the two second transmission plates and the first transmission plates, and the two transmission components are symmetrically distributed, and each of the transmission components includes a transmission rod, and the transmission rod is rotatably connected to the inner end of the first transmission plate and the middle part of the second transmission plate through the first shaft body and the second shaft body arranged at its end.

[0012] Preferably, a drive disk assembly is also provided inside the first limit groove, and the drive disk assembly includes a limit plate arranged in the middle of the first limit groove and capable of moving forward and backward in a limited manner, and the limit plate is used for installing the first transmission plate; and a transmission groove opened on the limit plate in the left and right directions; and also includes a micro motor arranged at the bottom of the first limit groove, the micro motor having a transmission disk fixed at its output end, and a transmission shaft eccentrically arranged on the upper surface of the transmission disk, and the transmission shaft can move in a limited manner inside the transmission groove.

[0013] Preferably, the operating platform includes a connecting seat and a driving motor arranged on the connecting seat, and also includes an operating table fixed on the driving motor, and a sliding block is provided in a sliding groove opened on the operating table, and the sliding block is connected to the mounting support.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model sets a first clamp component to realize the limit fixation of the printed circuit board and the assembly compaction of a plurality of pins before welding to the printed circuit board. The setting of the second clamp component can limit and fix the chip at the welding position where the printed circuit board is located. Due to the structural setting of the second clamp component, the first clamp and the second clamp provided by the second clamp component can be further used for the limit switching of the welding position between the printed circuit board and the chip, thereby realizing the circumferential welding process of the chip. The utility model can be applied to the field of manipulator and robot processing. The device is placed on an automated tray to complete the automatic clamping process of microelectronics, and with the cooperation of the welding robot, the fine welding of microelectronics can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0018] Figure 3 for Figure 1 A front view structural diagram of

[0019] Figure 4 for Figure 1 A schematic diagram of a local enlarged structure;

[0020] Figure 5 Another perspective structural diagram of 4;

[0021] Figure 6 is an enlarged structural schematic diagram of the second clamp assembly;

[0022] Figure 7 for Figure 6 Schematic diagram of the disassembled structure;

[0023] Figure 8 for Figure 7 Another perspective structural diagram of;

[0024] Fig. 9 for Figure 5 Schematic diagram of the local enlarged structure.

[0025] In the figure: 1, operating platform; 101, connecting seat; 102, driving motor; 103, operating table; 104, slide; 2, mounting support; 201, mounting plate; 202, assembly welding table; 3, second fixture assembly; 301, seat body; 302, first limiting groove; 303, second limiting groove; 304, micro motor; 305, transmission plate; 306, transmission shaft; 307, limiting plate; 308, first transmission plate; 309, second transmission plate; 310, transmission rod; 311, second electric extension Retractable rod; 312, clamping block; 313, clamping strip; 314, transmission groove; 4, driving assembly; 401, L-shaped frame; 402, first driving block; 403, second driving block; 404, driving member; 405, sleeve; 406, connecting member; 407, first electric telescopic rod; 5, first buckling assembly; 501, connecting rod; 502, connecting frame; 503, buckling member; 6, second buckling assembly; 601, L-shaped rod; 602, clamping rod; 10, printed circuit board; 11, chip; 12, pin. DETAILED DESCRIPTION

[0026] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.

[0027] Example 1

[0028] See also Figures 1 to 9 The utility model preferably provides a technical solution: a welding device for microelectronic assembly, the microelectronics consists of a printed circuit board 10, a chip 11, and a plurality of pins 12: including an operating platform 1, a mounting support 2 arranged on the operating platform 1, the mounting support 2 includes a mounting plate 201, and an assembly welding table 202 arranged in the middle of the mounting plate 201, the assembly welding table 202 provides a support platform for welding the printed circuit board 10 and the chip 11; and first clamp components respectively arranged on the left and right sides of the mounting plate 201 and symmetrically distributed, the first clamp components act on both sides of the printed circuit board 10 for limiting and fixing it and realizing assembly compaction before welding the plurality of pins 12 and the printed circuit board 10; also including second clamp components 3 respectively arranged on the front and rear sides of the mounting plate 201, the two groups of second clamp components 3 are symmetrically distributed and have a first clamp and a second clamp, the first clamp and the second clamp are used for limiting and switching the welding position of the printed circuit board 10 and the chip 11.

[0029] The device can be applied to the field of manipulator and robot processing. By placing the device on an automated pallet, the automatic clamping process of microelectronics can be completed, and with the cooperation of a welding robot, fine welding of microelectronics can be achieved.

[0030] It is known that microelectronic assembly is a process of mounting a chip 11 on the surface of a printed circuit board 10 and soldering it at the copper soldering point of the printed circuit board 10, and inserting a plurality of pins 12 into the corresponding holes of the chip 11 and soldering them. The present application sets a first clamp assembly to achieve the limited fixation of the printed circuit board 10 and the assembly compaction of the plurality of pins 12 and the printed circuit board 10 before soldering. The second clamp assembly 3 is set to limit and fix the chip 11 at the soldering position of the printed circuit board 10. Due to the structural setting of the second clamp assembly 3, the first clamp and the second clamp provided by the second clamp assembly 3 can be further used for the limited switching of the soldering position of the printed circuit board 10 and the chip 11.

[0031] Specific as Figure 1 , 45, the first fixture assembly and the second fixture assembly 3 are respectively arranged on the left and right sides and the front and rear sides of the mounting plate 201 where the mounting support 2 is located, and the assembly welding table 202 arranged in the middle of the mounting plate 201 provides a supporting platform for welding the printed circuit board 10 and the chip 11. Figure 4 As shown, when the microelectronics needs to be limited and fixed, the first clamp assembly has two-way pressing actions through the structural characteristics, wherein the pressing action in one direction can limit the printed circuit board 10 at the welding position of the assembly welding station 202, and the pressing action in the other direction can simultaneously realize the assembly compaction process of the welding positions of the plurality of pins 12 and the printed circuit board 10, thereby ensuring the welding stability of the printed circuit board 10 and the plurality of pins 12, and the structural characteristics of the second clamp assembly 3, in conjunction with the dynamic switching of the first clamp and the second clamp it has, can ensure the welding stability of the chip 11 while realizing the circumferential welding process of the chip 11;

[0032] The utility model provides a first clamp assembly and a second clamp assembly 3 to ensure the welding stability between the printed circuit board 10 and the chip 11 and between the printed circuit board 10 and a plurality of pins 12, and cooperates with the dynamic switching of the first clamp and the second clamp where the second clamp assembly 3 is located to further achieve the circumferential welding of the chip 11.

[0033] Example 2

[0034] As a first embodiment of the utility model, the first clamp assembly includes two driving assemblies 4, and a first pressing assembly 5 and a second pressing assembly 6 arranged between the two driving assemblies 4. When the driving assembly 4 is running, it drives the first pressing assembly 5 to press downward to complete the pressing of a number of pins 12 and the welding positions of the printed circuit board 10, and drives the second pressing assembly 6 to press toward the middle, so that the second pressing assembly 6 acts on both sides of the printed circuit board 10 and is used to limit and fix the printed circuit board 10.

[0035] In this embodiment, Figure 5 , 6 As shown, the two driving components 4 are used to drive the first pressing component 5 and the second pressing component 6 arranged therebetween to operate synchronously, so as to realize the position limit fixing of the printed circuit board 10 and press the plurality of pins 12 one by one on the corresponding welding positions of the printed circuit board 10, combined with Fig. 9 As shown, the design has high stability for subsequent welding operations.

[0036] Furthermore, each group of driving components 4 includes an L-shaped frame 401, and a first driving block 402 and a second driving block 403 which are rotatably connected to the two ends of the L-shaped frame 401 through a first pin shaft; it also includes a driving member 404, the driving member 404 includes a U-shaped portion and a first rod portion, the U-shaped portion is rotatably connected to the first driving block 402 through a second pin shaft arranged thereon, the first rod portion passes through the interior of the second driving block 403 and is sequentially provided with a sleeve 405 and a connecting member 406, the sleeve 405 and the first rod portion are through-set; and a plurality of first electric telescopic rods 407 arranged between the connecting member 406 and the sleeve 405; the first buckling component 5 and the second buckling component 6 are respectively arranged at the bottom of the first driving block 402 and the second driving block 403.

[0037] Combination Figure 4 , 5 As shown, the first driving block 402 and the second driving block 403 are rotatably connected to the two ends of the L-shaped frame 401 respectively, and the driving member 404 is arranged between the first driving block 402 and the second driving block 403, one end of which is rotatably connected to the first driving block 402, and the other end of which passes through the second driving block 403 and is sleeved with a sleeve 405, and cooperates with a first electric telescopic rod 407 arranged between the end of the driving member 404 and the sleeve 405 to adjust the telescopic position of the first rod portion where the driving member 404 is located in the sleeve 405, so as to realize the telescopic movement of the first driving block 402 and the second driving block 403. The process of the second driving block 403 deflecting toward or away from the middle of the two, specifically, when the first driving block 402 and the second driving block 403 are buckled down toward the middle of the two, the first buckling component 5 and the second buckling component 6 respectively arranged at the bottom of the first driving block 402 and the second driving block 403 respectively realize the assembly and pressing of several pins 12 and the printed circuit board 10 and the limiting and fixing process of the position of the printed circuit board 10. Similarly, when the two are deflected upward, the separation process of the first buckling component 5 and the pins 12, and the second buckling component 6 and the printed circuit board 10 is respectively realized.

[0038] Furthermore, the first clamping assembly 5 includes a connecting rod 501 fixed to the bottom of the first driving block 402 where the two groups of driving assemblies 4 are located, and a connecting frame 502 arranged on the connecting rod 501; it also includes a clamping piece 503 arranged at one end of the connecting frame 502 away from the connecting rod 501, and the clamping piece 503 is composed of a support rod and a plurality of clamping rods under the support rod, each of the clamping rods includes a second rod portion, and a fork portion at the bottom end of the second rod portion, and the fork portion acts on both ends of the pin 12.

[0039] Here, the connecting rod 501 is fixed to the bottom of the two first driving blocks 402, and the connecting rod 501 is provided with a buckling member 503 through the connecting frame 502 thereon, which is composed of a support rod at the top and a plurality of buckling rods under the support rod. Figure 4 , 9As shown, when the first driving block 402 is buckled down, it drives the connecting rod 501, the connecting frame 502 and the buckling piece 503 to buckle down, so that the branch part of the buckling rod where the buckling piece 503 is located presses against the two ends of the corresponding pin 12, thereby limiting and fixing the corresponding pin 12 at the corresponding welding position where the printed circuit board 10 is located.

[0040] Furthermore, the second clamping assembly 6 includes an L-shaped rod 601, which is connected to the bottom of the two second driving blocks 403, and two clamping rods 602 arranged on the side of the vertical section of the L-shaped rod 601 close to the printed circuit board 10, and the ends of the two clamping rods 602 away from the L-shaped rod 601 act on the side wall of the printed circuit board 10.

[0041] like Figure 5 , 9 As shown, the L-shaped rod 601 is arranged at the bottom of the two second driving blocks 403. When the second driving blocks 403 are buckled down, the clamping rod 602 on the L-shaped rod 601 is driven to buckle sideways toward the printed circuit board 10 and act on the side wall of the printed circuit board 10 to realize the position limiting process of the printed circuit board 10.

[0042] Example 3

[0043] As other embodiments of the present invention, each set of second clamp components 3 includes a base body 301, and a first limiting groove 302 and a second limiting groove 303 respectively arranged in the middle and both sides of the base body 301; and also includes a first clamp and a second clamp respectively arranged in the first limiting groove 302 and the second limiting groove 303; the first clamp includes a first transmission plate 308 limitedly installed in the first limiting groove 302, and a clamping strip 313 fixed on the first transmission plate 308 near the chip 11; the second clamp includes a second transmission plate 308 slidably installed in each second limiting groove 303. Plate 309, a mounting block arranged on the second transmission plate 309, and a second electric telescopic rod 311 arranged on the mounting block, and the clamping block 312 fixed at the telescopic end of the second electric telescopic rod 311 can contact the side wall of the chip 11; transmission components are also respectively arranged between the two second transmission plates 309 and the first transmission plate 308, and the two transmission components are symmetrically distributed, each transmission component includes a transmission rod 310, and the transmission rod 310 is rotatably connected to the inner end of the first transmission plate 308 and the middle part of the second transmission plate 309 through the first shaft body and the second shaft body arranged at its end.

[0044] In this embodiment, if Figure 6 , 7As shown in , 8, the seat body 301 where the second clamp assembly 3 is located has a first limiting groove 302 and a second limiting groove 303 in the middle and on both sides respectively, and the first limiting groove 302 and the second limiting groove 303 are respectively provided with a first chuck and a second chuck, which can be moved forward and backward and left and right in the first limiting groove 302 and the second limiting groove 303 respectively, and cooperate with two symmetrically distributed transmission components arranged between the first chuck and the second chuck assembly. The specific transmission component includes a transmission rod 310, and the transmission rod 310 is rotatably connected to the first chuck and the second chuck through the first shaft body and the second shaft body at its end respectively. Specifically, the first shaft body is connected to the inner side end of the first transmission plate 308 where the first chuck is located, and the second shaft body is arranged in the middle of one of the second transmission plates 309 where the second chuck is located, combined with Figure 5 , 6 As shown, when the first clamp moves forward and backward, the two second transmission plates 309 where the second clamp is located can move inward or outward inside the two second limiting grooves 303;

[0045] Specific as Figure 6 As shown, since the two groups of second clamp components 3 are symmetrically distributed, Figure 5Taking the second clamp assembly 3 on the rear side as an example, when the first transmission plate 308 moves forward inside the first limiting groove 302, that is, when it approaches the chip 11, the second limiting groove 303 set at the inner end of the first transmission plate 308 can contact the rear side surface of the chip 11. This process can facilitate the welding of the left and right sides of the chip 11. When the first transmission plate 308 moves backward to achieve the separation of the clamping strip 313 from the rear side surface of the chip 11, during this process, when the first axis body thereon has not passed over the second axis bodies on the two second transmission plates 309, under the action of the two transmission components, the two second transmission plates 309 can move outward. Once the first axis body on the first transmission plate 308 passes over the second axis body and moves further backward, it drives the two second transmission plates 309 to move inward. At this time, the second electric telescopic rods 311 set on the two second transmission plates 309 can move toward the chip 11. The two second transmission plates 309 extend and as the two second transmission plates 309 move closer together, the two clamping blocks 312 clamp the left and right sides of the chip 11, thereby facilitating the welding of the front and rear sides of the chip 11. In this embodiment, through the action of the transmission component between the first clamp and the second clamp, when the first clamp completes the clamping of the front and rear sides of the chip 11 and moves away from the chip 11, specifically when the first axis head on the first transmission plate 308 passes over the second axis position on the second transmission plate 309, the two second transmission plates 309 move closer together. At this time, the second electric telescopic rods 311 on the two second transmission plates 309 extend and as the two second transmission plates 309 move closer together, the clamping blocks 312 at their telescopic ends clamp the left and right sides of the chip 11, thereby realizing the dynamic switching process of the clamping positions of the first clamp and the second clamp. This design realizes the circumferential welding process of the chip 11.

[0046] Furthermore, a drive disk assembly is also arranged inside the first limit groove 302, and the drive disk assembly includes a limit plate 307 arranged in the middle of the first limit groove 302 and capable of moving forward and backward in a limited manner, and the limit plate 307 is used for the installation of the first transmission plate 308; and a transmission groove 314 opened on the limit plate 307 in the left and right directions; and also includes a micro motor 304 arranged at the bottom of the first limit groove 302, the micro motor 304, a transmission disk 305 is fixed at its output end, and a transmission shaft 306 eccentrically arranged on the upper surface of the transmission disk 305, and the transmission shaft 306 can move in a limited manner inside the transmission groove 314.

[0047] Combination Figure 7 , 8As shown, the limit plate 307 is limitedly installed in the middle of the first limit groove 302 and can move forward and backward in the middle thereof, and the transmission plate 305 fixed at the output end of the micro motor 304, and the eccentrically arranged transmission shaft 306 on it can limit and move inside the transmission groove 314 opened on the limit plate 307. Here, the transmission groove 314 is distributed in the left and right directions. Therefore, when the micro motor 304 is running, it can drive the transmission plate 305 to rotate, so that the eccentrically arranged transmission shaft 306 on the transmission plate 305 can rotate. Since the limit plate 307 can only move forward and backward, the transmission groove 314 opened on it is distributed in the left and right directions. Therefore, the left and right force of the transmission shaft 306 is decomposed by the transmission groove 314, and its front and rear forces can drive the limit plate 307 to run, thereby realizing the front and rear limit operation of the limit plate 307.

[0048] It is worth noting that the rotation direction of the micro motor 304 is set to Figure 8 As shown in the counterclockwise direction, when the transmission shaft 306 rotates to the rear half of its running track, that is, when the first shaft body crosses the critical value of the second shaft body or the transmission shaft 306 reaches and crosses the first shaft body position where the second transmission plate 309 on the right side is located, as shown in the Figure 7 As shown, at this time, the angle sensor on the micro motor 304 can send a signal to the single chip microcomputer, and the single chip microcomputer further drives the two second electric telescopic rods 311 to operate.

[0049] Example 4

[0050] As other embodiments of the utility model, the operating platform 1 includes a connecting seat 101 and a driving motor 102 arranged on the connecting seat 101, and also includes an operating table 103 fixed on the driving motor 102, and a sliding block is provided in a slide groove 104 opened on the operating table 103, and the sliding block is connected to the mounting support 2.

[0051] In this embodiment, the slide groove 104 and the slider are provided to realize the horizontal displacement of the mounting support 2 and the structure thereon, and the driving motor 102 is provided to further realize the overall rotation process of the mounting support 2 and the structure thereon, and the mounting hole opened on the connecting seat 101 is cooperated, such as Figure 1 As shown, the welding device can be installed on a mechanical fixture.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and buckle matching, and for example, through the method of bolt connection, etc.

[0053] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A welding device for microelectronic assembly, wherein the microelectronics are composed of a printed circuit board (10), a chip (11), and a plurality of pins (12), characterized in that: It comprises an operating platform (1), a mounting support (2) arranged on the operating platform (1), the mounting support (2) comprising a mounting plate (201), and an assembly welding platform (202) arranged in the middle of the mounting plate (201), the assembly welding platform (202) providing a supporting platform for welding a printed circuit board (10) and a chip (11); and first clamp components respectively arranged on the left and right sides of the mounting plate (201) and symmetrically distributed, the first clamp components acting on the two sides of the printed circuit board (10) to limit and fix the printed circuit board (10) and realize assembly and compaction of a plurality of pins (12) and the printed circuit board (10) before welding; It also includes second clamp components (3) respectively arranged on the front and rear sides of the mounting plate (201), the two groups of second clamp components (3) are symmetrically distributed and have a first clamp and a second clamp, and the first clamp and the second clamp are used for limiting the switching of the welding position of the printed circuit board (10) and the chip (11).

2. A microelectronic assembly welding device according to claim 1, characterized in that: The first clamp assembly comprises two driving assemblies (4), and a first pressing assembly (5) and a second pressing assembly (6) arranged between the two driving assemblies (4). When the driving assembly (4) is in operation, it drives the first pressing assembly (5) to press downwards to complete the pressing of a plurality of pins (12) and welding positions of the printed circuit board (10), and drives the second pressing assembly (6) to press toward the middle, so that the second pressing assembly (6) acts on both sides of the printed circuit board (10) and is used for limiting and fixing the printed circuit board (10).

3. A microelectronic assembly welding device according to claim 2, characterized in that: Each set of driving components (4) comprises an L-shaped frame (401), and a first driving block (402) and a second driving block (403) which are rotatably connected to two ends of the L-shaped frame (401) via a first pin shaft respectively; The drive member (404) further comprises a U-shaped portion and a first rod portion, wherein the U-shaped portion is rotatably connected to the first drive block (402) via a second pin shaft arranged thereon, and the first rod portion passes through the interior of the second drive block (403) and is sequentially provided with a sleeve (405) and a connecting member (406), wherein the sleeve (405) and the first rod portion are arranged to penetrate each other; and a plurality of first electric telescopic rods (407) arranged between the connecting member (406) and the sleeve body (405); The first pressing assembly (5) and the second pressing assembly (6) are respectively arranged at the bottom of the first driving block (402) and the bottom of the second driving block (403).

4. A microelectronic assembly welding device according to claim 3, characterized in that: The first pressing assembly (5) comprises a connecting rod (501) fixed to the bottom of the first driving block (402) where the two sets of driving assemblies (4) are located, and a connecting frame (502) arranged on the connecting rod (501); It also includes a clamping piece (503) arranged at one end of the connecting frame (502) away from the connecting rod (501), and the clamping piece (503) is composed of a support rod and a plurality of clamping rods below the support rod, each of the clamping rods includes a second rod portion and a branch portion at the bottom end of the second rod portion, and the branch portion acts on the two ends of the pin (12).

5. A microelectronic assembly welding device according to claim 3, characterized in that: The second pressing assembly (6) comprises an L-shaped rod (601), the L-shaped rod (601) being connected to the bottom of the two second driving blocks (403), and two clamping rods (602) being arranged on a side of the vertical section of the L-shaped rod (601) close to the printed circuit board (10), and the ends of the two clamping rods (602) away from the L-shaped rod (601) acting on the side wall of the printed circuit board (10).

6. A microelectronic assembly welding device according to claim 1, characterized in that: Each set of second clamp components (3) comprises a seat body (301), and a first limiting groove (302) and a second limiting groove (303) respectively arranged in the middle and on both sides of the seat body (301); It also includes a first clamp and a second clamp respectively arranged inside the first limiting groove (302) and the second limiting groove (303); The first clamping head comprises a first transmission plate (308) which is limitedly installed inside the first limiting groove (302), and a clamping strip (313) fixed on a side of the first transmission plate (308) close to the chip (11); The second clamping head comprises a second transmission plate (309) slidably mounted inside each of the second limiting grooves (303), a mounting block arranged on the second transmission plate (309), and a second electric telescopic rod (311) arranged on the mounting block, and a clamping block (312) fixed at the telescopic end of the second electric telescopic rod (311) can contact the side wall of the chip (11); Transmission components are also respectively arranged between the two second transmission plates (309) and the first transmission plate (308), and the two transmission components are symmetrically distributed. Each of the transmission components includes a transmission rod (310), and the transmission rod (310) is rotatably connected to the inner end of the first transmission plate (308) and the middle part of the second transmission plate (309) through a first shaft body and a second shaft body arranged at its end.

7. A microelectronic assembly welding device according to claim 6, characterized in that: A driving disk assembly is also arranged inside the first limiting groove (302), and the driving disk assembly comprises a limiting plate (307) arranged in the middle of the first limiting groove (302) and capable of frontward and rearward limiting movement, and the limiting plate (307) is used for installing the first transmission plate (308); and a transmission groove (314) opened in the left and right directions on the limiting plate (307); It also includes a micro motor (304) arranged at the bottom of the first limiting groove (302), wherein the output end of the micro motor (304) is fixed with a transmission disc (305), and a transmission shaft (306) eccentrically arranged on the upper surface of the transmission disc (305), and the transmission shaft (306) can be limited and moved inside the transmission groove (314).

8. A microelectronic assembly welding device according to claim 1, characterized in that: The operating platform (1) comprises a connecting seat (101), and a driving motor (102) arranged on the connecting seat (101), and also comprises an operating table (103) fixed on the driving motor (102), and a sliding block is arranged in a sliding groove (104) provided on the operating table (103), and the sliding block is connected to the mounting support (2).

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