CN111683468B

CN111683468B - Electronic components hot pressing kludge

Info

Publication number: CN111683468B
Application number: CN202010657679.7A
Authority: CN
Inventors: 张海筹; 胡东; 陈志国; 谭峰亮; 汪力; 王舒
Original assignee: Hunan University of Humanities Science and Technology
Current assignee: Hunan University of Humanities Science and Technology
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2022-07-19
Anticipated expiration: 2040-07-09
Also published as: CN111683468A

Abstract

The invention relates to the technical field of processing equipment and discloses an electronic component hot-pressing assembling machine which comprises a fixing box, a lifting device, screens, connecting pieces and an air pump, wherein a fixing plate is fixedly installed at the bottom end of the lifting device, a hot-pressing head is fixedly installed at the bottom of the fixing plate, two screens are respectively positioned on two sides of the front face of the fixing box, and each connecting piece comprises a circuit board PCB and a flexible printed circuit FPC. Through the setting that covers the device, make seal the hot pressing head, the outside transmission path of air is passed through in the separation heat radiation, reduce the burning of hot pressing head to the connecting piece, improve the quality of connecting piece, and concentrate the heat that the hot pressing head scatters and disappears, accelerate the first heating rate of rising of hot pressing, reduce the intensification time, setting through the fixed valve, make the both sides bottom that is connected the connecting piece continuously cool off, prevent that the heat from the inside conduction of connecting piece, cause the damage of connecting piece, improve the security of connecting piece.

Description

Electronic components hot pressing kludge

Technical Field

The invention relates to the technical field of processing equipment, in particular to a hot-pressing assembling machine for electronic components.

Background

The pulse hot press acts on the welding between the FPC and the PCB, the working principle is as shown in figure 5, the hot pressing head is lifted through the lifting device, the hot pressing head is pressed on the connection between the FPC and the PCB with certain pressure, then certain pulse voltage is loaded on the hot pressing head, the hot pressing head generates heat, the connection part between the FPC and the PCB, which is connected with the hot pressing head and is placed on the negative pressure base, is heated up, when the temperature is raised to a soldering tin melting point (namely raised to a preset temperature), the tin at the connection part between the FPC and the PCB is melted and connected together, then the hot pressing head is powered off, and the cooling gas is utilized to cool the FPC and the solder paste, so the assembly of the FPC and the PCB is completed, but the pulse hot pressing machine has some defects in the using process, as follows:

one, when the hot pressing head carries out the hot pressing to flexible printed circuit FPC and circuit board PCB, possess higher temperature in the short time, the hot pressing head is when transmitting the heat to flexible printed circuit FPC and circuit board PCB junction, still transmit the regional outside the junction with thermal radiation to circuit board PCB self through air and flexible printed circuit FPC and circuit board PCB, cause the burn to flexible printed circuit FPC and circuit board PCB, influence product quality, and utilize cold air to carry out quick cooling to hot pressing head, when treating next use, reheat intensification again, so get up and cause a large amount of energy extravagant, cause the processing cost.

When the Flexible Printed Circuit (FPC) and the circuit board Printed Circuit Board (PCB) are installed, the Flexible Printed Circuit (FPC) and the circuit board Printed Circuit Board (PCB) are required to be connected and arranged under a hot pressing head, circuits on the FPC and the circuit board printed circuit board are required to be paired one by one, however, the circuits are small, the connecting part is required to be shot and projected onto a screen by a camera to be observed and paired, the two cameras are arranged on one side of the connecting part, meanwhile, the connecting part of the FPC and the circuit board Printed Circuit Board (PCB) is in a parallel position with the sight of an operator, when the connecting part of the FPC and the circuit board Printed Circuit Board (PCB) covers the connecting part, the paired sight is blocked, the pairing efficiency is reduced, the pairing quality is reduced, and the product quality is reduced.

Disclosure of Invention

The invention provides an electronic component hot-pressing assembling machine which has the advantages of convenience in use, good safety performance and high product quality, and solves the problems in the background technology.

The invention provides the following technical scheme: a hot-pressing assembling machine for electronic components comprises a fixed box, a lifting device, a screen, a connecting piece and an air pump, wherein a fixed plate is fixedly arranged at the bottom end of the lifting device, a hot-pressing head is fixedly arranged at the bottom of the fixed plate, the screen is provided with two screens which are respectively positioned at the two front sides of the fixed box, the connecting piece comprises a circuit board PCB and a flexible circuit board FPC, a fixed frame is fixedly arranged at the front side of the fixed box, the inner part of the fixed frame is fixedly connected with the lifting device, a convex supporting plate is movably arranged at the inner side of the fixed frame, the bottom end of the convex supporting plate is fixedly connected with the upper surface of the fixed plate, a negative pressure base is fixedly arranged on the fixed box and is positioned under the hot-pressing head, a sliding frame is movably arranged on the fixed frame, a camera is fixedly connected on the sliding frame, a covering device is fixedly arranged at the bottom surface of the fixed plate, the negative pressure base is characterized in that a connecting base is fixedly mounted at the middle of the negative pressure base and is located under the hot pressing head, the connecting base and the hot pressing head are horizontal in the vertical direction, and a fixing valve is fixedly mounted in the negative pressure base and on the back of the connecting base.

Preferably, the covering device comprises a trapezoidal plate, the top of the trapezoidal plate is fixedly connected with the bottom surface of the fixing plate, the trapezoidal plate is provided with two front parts and two back parts which are respectively located on the hot pressing heads, the trapezoidal plate is provided with a chute, the trapezoidal plate is movably clamped with side baffles in the chute, and the side baffles are provided with two sides which are respectively located on the hot pressing heads.

Preferably, the lowest point of the side baffle is the same as the lowest point of the hot pressing head, and the lowest point of the trapezoidal plate is 2-5mm higher than the lowest point of the hot pressing head.

Preferably, the negative pressure base is last and be located the both sides of connecting the base and seted up the triangle chute respectively, the standing valve includes the valve body, air intlet and cooling gas import have been seted up respectively to the back of valve body, air intlet and cooling gas import pass through the trachea and communicate with the air pump respectively, gas outlet has been seted up in the front of valve body, gas outlet and triangle chute intercommunication.

Preferably, the skid comprises an upper skid plate and a lower skid plate, the upper skid plate and the lower skid plate are movably clamped with the fixing frame, the upper skid plate and the lower skid plate are fixedly provided with a front skid plate and a rear skid plate, the inner parts of the front skid plate and the rear skid plate are movably provided with a fixed clamping ring, the fixed clamping ring is fixedly connected with the camera, the two skid frames are respectively positioned at two sides of the hot pressing head, and the two cameras are respectively at 45 degrees and 135 degrees.

The invention has the following beneficial effects:

1. through the setting that covers the device, make seal the hot pressing head, the outside transmission path of air is passed through in the separation heat radiation, reduce the burning of hot pressing head to the connecting piece, improve the quality of connecting piece, and concentrate the heat that the hot pressing head scatters and disappears, accelerate the first heating rate of rising of hot pressing, reduce the intensification time, setting through the fixed valve, make the both sides bottom that is connected the connecting piece continuously cool off, prevent that the heat from the inside conduction of connecting piece, cause the damage of connecting piece, improve the security of connecting piece.

2. Through hot pressing head and fixed box looks vertically setting, when making to the connecting piece installation, it is connected perpendicular with operating personnel's sight, be convenient for observe the connecting piece junction between two parties and the condition of pairing, increase the installation rate of connecting piece, improve production efficiency, install the both sides at the connecting piece junction respectively through two cameras simultaneously, make to shoot circuit board PCB and flexible printed circuit FPC respectively, when flexible printed circuit FPC covers circuit board PCB, the camera of both sides is shot the connecting piece from two visual angles respectively, compare between the two, so as to carry out quick and accurate pairing, further improve the installation effectiveness.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic side view of the structure of the present invention;

FIG. 3 is a schematic view of the installation of the structural fixing valve and the connecting base of the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1;

fig. 5 is a schematic diagram of a conventional structure.

In the figure: 1. a fixed box; 2. a fixed mount; 3. a lifting device; 4. a fixing plate; 5. a hot-pressing head; 6. a negative pressure base; 7. a camera; 8. a screen; 9. a connecting member; 91. a circuit board PCB; 92. a Flexible Printed Circuit (FPC); 10. a skid; 101. an upper and lower sliding plate; 102. a front and rear slide plate; 103. fixing the snap ring; 11. a covering device; 111. a trapezoidal plate; 112. a side dam; 12. connecting a base; 13. a fixed valve; 131. a valve body; 132. an air inlet; 133. a cooling gas inlet; 134. a gas outlet; 14. the convex supporting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-4, an electronic component hot-pressing assembly machine comprises a fixed box 1, a lifting device 3, a screen 8, a connecting piece 9 and an air pump, wherein a fixed plate 4 is fixedly installed at the bottom end of the lifting device 3, a hot-pressing head 5 is fixedly installed at the bottom of the fixed plate 4, two screens 8 are respectively located at two sides of the front surface of the fixed box 1, the connecting piece 9 comprises a circuit board PCB91 and a flexible circuit board FPC92, a fixed frame 2 is fixedly installed at the front surface of the fixed box 1, the inside of the fixed frame 2 is fixedly connected with the lifting device 3, a convex support plate 14 is movably installed at the inner side of the fixed frame 2, the bottom end of the convex support plate 14 is fixedly connected with the upper surface of the fixed plate 4, a negative pressure base 6 is fixedly installed on the fixed box 1 and located under the hot-pressing head 5, a sliding frame 10 is movably installed on the fixed frame 2, a camera 7 is fixedly connected on the sliding frame 10, a covering device 11 is fixedly installed at the bottom surface of the fixed plate 4, the middle part of the negative pressure base 6 is fixedly provided with a connecting base 12 under the hot pressing head 5, the connecting base 12 is horizontal to the hot pressing head 5 in the vertical direction, and the back part of the negative pressure base 6, which is positioned on the connecting base 12, is fixedly provided with a fixed valve 13.

Wherein, the covering device 11 comprises a trapezoidal plate 111, the top of the trapezoidal plate 111 is fixedly connected with the bottom surface of the fixing plate 4, two trapezoidal plates 111 are respectively positioned at the front part and the back part of the hot-pressing head 5, the trapezoidal plate 111 is provided with a chute, the trapezoidal plate 111 is movably clamped with two side baffles 112 in the chute, two side baffles 112 are respectively positioned at two sides of the hot-pressing head 5, when the hot pressing head 5 descends and applies a certain pressure to the joint of the connecting piece 9, the ground of the side baffle plate 112 is also contacted with the connecting piece 9, but no external pressure is applied, the two sides of the hot pressing head 5 are protected, so that the hot pressing head 5 is sealed, heat radiation is blocked from passing through an air outward transmission channel, the burn of the hot pressing head 5 to the connecting piece 9 is reduced, the quality of the connecting piece 9 is improved, and the heat dissipated by the hot-pressing head 5 is concentrated, the heating rate of the hot-pressing head 5 is increased, and the heating time is shortened.

The lowest point of the side baffle 112 is the same as the lowest point of the hot pressing head 5, the lowest point of the trapezoidal plate 111 is 2-5mm higher than the lowest point of the hot pressing head 5, the hot pressing head 5 can be comprehensively protected, meanwhile, the trapezoidal plate 111 is prevented from being in contact with the connecting piece 9, compression is caused to the connecting piece 9, meanwhile, when the connecting part of the connecting piece 9 is cooled by cooling gas, the contact of cooling air and the hot pressing head 5 is reduced, the hot pressing head 5 is cooled to a certain extent, the hot pressing head 5 can be separated from the connecting piece 9 when the temperature of the hot pressing head 5 is reduced to be lower than the melting point of solder paste, the temperature is reserved for next welding, the heating time is shortened, and the energy waste is reduced.

Wherein, the negative pressure base 6 and the two sides of the connecting base 12 are respectively provided with a triangular chute, the fixed valve 13 comprises a valve body 131, the back of the valve body 131 is respectively provided with an air inlet 132 and a cooling air inlet 133, the air inlet 132 and the cooling air inlet 133 are respectively communicated with an air pump through an air pipe, the front of the valve body 131 is provided with an air outlet 134, the air outlet 134 is communicated with the triangular chute, when the thermal head 5 heats the connecting parts 9, the air inlet 132 cools the connecting parts 9 located at both sides of the connecting base 12 by the air extracted from the negative pressure base 6, the heat transmitted by the hot-pressing head 5 from the connecting piece 9 is isolated, the damage of the heat to the connecting piece 9 is reduced, simultaneously when cooling connecting piece 9, lead to the triangle chute with cooling gas through cooling gas inlet 133 for the cooling rate of tin cream on connecting piece 9 effectively reduces cooling gas and hot pressing head 5 contact simultaneously.

The sliding rack 10 comprises an upper sliding plate 101 and a lower sliding plate 101, the upper sliding plate 101 and the lower sliding plate 101 are movably clamped with the fixing frame 2, the upper sliding plate 101 and the lower sliding plate 101 are fixedly provided with a front sliding plate 102 and a rear sliding plate 102, the inner parts of the front sliding plate 102 and the rear sliding plate 102 are movably provided with a fixing snap ring 103, the fixing snap ring 103 is fixedly connected with the camera 7, the two sliding racks 10 are respectively positioned at two sides of the hot press head 5, the two cameras 7 are respectively at 45 degrees and 135 degrees, when the connecting piece 9 is installed, the circuit board PCB91 and the flexible circuit board FPC92 are respectively photographed, when the flexible circuit board FPC92 covers the circuit board PCB91, the cameras 7 at two sides respectively photograph the connecting piece 9 from two visual angles, comparison is carried out between the two cameras so as to carry out quick and accurate pairing, and the installation efficiency is further improved.

The working principle is that firstly, the circuit board PCB91 is placed on the negative pressure base 6, the connection position is placed on the connection base 12, the connection position is parallel to the connection base 12 in the vertical direction, then the connection position of the FPC92 of the flexible circuit board covers the connection position of the PCB91, the connection position of the FPC92 of the flexible circuit board is kept parallel to the connection position of the PCB91 of the circuit board, then the camera 7 shoots respectively from two sides, then the pictures are transmitted to the screen 8 to be amplified, the FPC92 of the flexible circuit board is translated slowly, circuits on the two are paired, after the pairing, the hot pressing head 5 descends through the transmission of the lifting device 3, the connection position of the connecting piece 9 is pressed down and a certain pressure is applied, the hot pressing head 5 is electrified, the hot pressing head 5 is heated up rapidly, the solder paste at the connection position of the connecting piece 9 is melted and fused together, in the process, the air pump transmits the air extracted from the negative pressure base 6 to the triangular chute through the air inlet 132, the connecting pieces 9 on two sides of the connecting base 12 are cooled, after heating is finished, cooling gas is used for cooling the space between the connecting part 9 and the hot pressing head 5, the temperature of the solder paste is reduced to enable the solder paste to solidify, after the temperature of the solder paste is reduced to be lower than a melting point, the hot pressing head 5 is lifted, the cooling gas continues to cool the connecting pieces 9 to the room temperature, meanwhile, the cooling gas inlet 133 leads the cooling gas to the triangular chute to cool the bottom surfaces of the connecting pieces 9.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electronic components hot pressing kludge, includes fixed case (1), elevating gear (3), screen (8), connecting piece (9) and air pump, the bottom fixed mounting of elevating gear (3) has fixed plate (4), the bottom fixed mounting of fixed plate (4) has hot pressing head (5), screen (8) have two and are located fixed case (1) positive both sides respectively, connecting piece (9) include circuit board PCB (91) and soft FPC (92), its characterized in that: the front of the fixed box (1) is fixedly provided with a fixed frame (2), the inside of the fixed frame (2) is fixedly connected with a lifting device (3), the inner side of the fixed frame (2) is movably provided with a convex support plate (14), the bottom end of the convex support plate (14) is fixedly connected with the upper surface of the fixed plate (4), the fixed box (1) is fixedly provided with a negative pressure base (6) under the hot pressing head (5), the fixed frame (2) is movably provided with a sliding frame (10), the sliding frame (10) is fixedly connected with a camera (7), the bottom surface of the fixed plate (4) is fixedly provided with a covering device (11), the middle part of the negative pressure base (6) is fixedly provided with a connecting base (12) under the hot pressing head (5), and the connecting base (12) is horizontally level with the hot pressing head (5) in the vertical direction, a fixed valve (13) is fixedly arranged in the negative pressure base (6) and positioned on the back of the connecting base (12);

the shielding device (11) comprises a trapezoidal plate (111), the top of the trapezoidal plate (111) is fixedly connected with the bottom surface of the fixing plate (4), the trapezoidal plate (111) is provided with two front parts and back parts which are respectively located on the hot-pressing head (5), a chute is formed in the trapezoidal plate (111), the trapezoidal plate (111) is movably clamped with a side baffle (112) in the chute, the side baffle (112) is provided with two side parts which are respectively located on the two sides of the hot-pressing head (5), a triangular chute is formed in the negative pressure base (6) and the two sides which are located on the connecting base (12), the fixing valve (13) comprises a valve body (131), the back part of the valve body (131) is respectively provided with an air inlet (132) and a cooling air inlet (133), the air inlet (132) and the cooling air inlet (133) are respectively communicated with an air pump through an air pipe, the front surface of the valve body (131) is provided with a gas outlet (134), the gas outlet (134) communicates with the triangular chute, the skid (10) is including upper and lower slide plate (101), upper and lower slide plate (101) and mount (2) activity joint, slide plate (102) around fixed mounting is gone up in upper and lower slide plate (101), the inside movable mounting of front and back slide plate (102) has fixed snap ring (103), fixed snap ring (103) and camera (7) fixed connection, skid (10) have two, and are located the both sides of hot pressing head (5) respectively, camera (7) have two, and are 45 degrees and 135 degrees respectively.

2. The electronic component hot-pressing assembly machine according to claim 1, wherein: the lowest point of the side baffle (112) is the same as the lowest point of the hot-pressing head (5), and the lowest point of the trapezoidal plate (111) is 2-5mm higher than the lowest point of the hot-pressing head (5).