CN111872509A

CN111872509A - Circuit board device replacing equipment

Info

Publication number: CN111872509A
Application number: CN202010744499.2A
Authority: CN
Inventors: 周魁青
Original assignee: Ningbo Lixiang Electronics Co ltd
Current assignee: Ningbo Lixiang Electronics Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-11-03

Abstract

The invention discloses a circuit board device replacing device, which comprises a base, wherein a tin conveying mechanism is arranged in the base, the tin conveying mechanism comprises a clamping base, a clamping sliding groove is formed in the clamping base, two clamping sliding blocks are arranged in the clamping sliding groove in a sliding mode, a threaded sleeve is fixedly arranged at the lower end of each clamping sliding block, and the threaded sleeve is in threaded connection with a lead screw. The invention has the advantages of low cost, simple structure, high automation degree and suitability for large-area popularization.

Description

Circuit board device replacing equipment

Technical Field

The invention relates to the field of circuit boards, in particular to a circuit board chip replacing device.

Background

With the increasing market demand of the packaged chips, the product productivity is increased, and the packaged chips are widely soldered on the circuit board. Since the price of the packaged chip is high, it becomes necessary to repair and replace the packaged chip in order to reduce the cost and improve the yield of the product. At present, the industry adopts the manual work to change and changes the encapsulation chip usually, and the manual work is changed the encapsulation chip and is needed to melt the soldering tin of chip pin earlier, then removes the chip fast, and at this in-process, not only higher to operator technical requirement, the operation is comparatively complicated, if operator's misoperation can damage the chip and melt tin still can sputter operator's skin and take place to scald, consequently how to protect the operator not to receive the injury still need constantly to study when promoting the convenience of changing the chip.

Disclosure of Invention

The invention aims to provide a circuit board device replacing device, which overcomes the defects of complex operation, easy scald on an operator, easy damage of a chip and the like of the traditional chip replacing method.

The invention is realized by the following technical scheme.

The invention relates to a circuit board device replacing device, which comprises a base, wherein a tin feeding mechanism is arranged in the base, the tin feeding mechanism comprises a clamping base, a clamping chute is arranged in the clamping base, two clamping slide blocks are arranged in the clamping chute in a sliding manner, a thread sleeve is fixedly arranged at the lower end of each clamping slide block and is in threaded connection with a lead screw, the thread directions of the two thread sleeves are opposite, a motor shaft is fixedly arranged at the right end of the lead screw, the motor shaft is controlled by a lead screw motor to rotate, the lead screw motor is embedded in the clamping base, an elastic cylinder is fixedly arranged at the lower end of the thread sleeve, an elastic groove is arranged in the elastic cylinder, an elastic slide block is arranged in the elastic groove in a sliding manner, a clamping pressure spring is fixedly arranged at the end, far away from the elastic slide block, one end, far away from the elastic slide block, of the clamping pressure, a clamping rod is fixedly arranged at the lower end of the elastic sliding block and used for clamping a chip, the tin conveying mechanism is used for clamping the chip, and the clamping pressure spring is used for protecting the chip when the tin conveying mechanism clamps the chip; the tin conveying mechanism is characterized in that tin absorbing mechanisms are arranged on two sides of the tin conveying mechanism, the tin absorbing mechanisms are arranged in the base, the tin absorbing mechanisms comprise tin bar motors embedded in the base, tin bar shafts are controlled by the tin bar motors, tin bar wheels are fixedly arranged at the front ends of the tin bar shafts, tin bars are wound on the outer sides of the tin bar wheels, the tin bars penetrate through tin bar sliding tubes through sliding tube grooves, the tin bar sliding tubes are connected with the sliding tube grooves in a sliding mode, the right ends of the tin bar sliding tubes are fixedly connected with heating blocks, the heating blocks can be electrified for heating, tin guide blocks are fixedly arranged at the right ends of the heating blocks, the tin bars further penetrate through the heating blocks and the tin guide blocks, and the tin absorbing mechanisms are used for conveying the tin bars; a sliding tube groove is further arranged on one side, away from the tin conveying mechanism, of the tin suction mechanism, the sliding tube groove comprises a tin suction cavity arranged inside the heating block, the tin suction cavity is communicated with the clamping mechanism, the clamping mechanism is arranged inside the tin suction pipe, the right end of the tin suction pipe is fixedly connected with the left end of the heating block, the tin suction pipe is slidably connected with the tin suction groove, a tin suction base and a tin discharge pipe are fixedly arranged at the left end of the tin suction pipe, a negative pressure groove is formed inside the tin suction base and is communicated with the clamping mechanism, a sealing block is slidably arranged inside the negative pressure groove, a tin suction connecting rod is fixedly arranged at the upper end of the sealing block, a pressing block is fixedly arranged at the upper end of the tin suction connecting rod, a tin suction pressure spring is arranged outside the tin suction connecting rod, the upper end of the tin suction pressure spring is fixedly connected with the pressing block, and the lower end of the tin suction pressure spring is fixedly connected with, a non-return sliding groove is also formed in the tin absorbing base, a non-return iron slide block non-return sliding block is arranged in the non-return sliding groove in a sliding manner, a wedge block is fixedly arranged at one end, close to the sealing block, of the non-return iron slide block non-return sliding block, a non-return pressure spring is fixedly arranged at one end, far away from the sealing block, of the non-return iron slide block non-return sliding block, one end, far away from the non-return iron slide block, of the non-return pressure spring is fixedly connected with the inner wall of one side, far away from the non-return iron slide block, of the non-return sliding groove, the non-return sliding groove is formed in the tin absorbing base, a non-return electromagnet is further arranged at one end, far away from the sealing block, of the non-return sliding groove, the non-return electromagnet is embedded in, the front end of the turnover shaft rotates to be provided with the turnover shaft, the outer side of the turnover shaft is provided with a torsion spring, the rear end of the torsion spring is fixedly connected with the tin discharging pipe, the front end of the torsion spring is fixedly connected with the one-way plate, and the sliding pipe groove is used for sucking out waste molten tin.

Preferably, the fixed connecting rod that is equipped with in centre gripping base upper end, the fixed iron slider that is equipped with in connecting rod upper end, iron slider and vertical spout sliding connection, vertical spout set up in inside the base, the connecting rod outside still is equipped with the pressure spring, the pressure spring upper end with iron slider fixed connection, the pressure spring lower extreme with launch electromagnet fixed connection, it inlays to locate to launch the electromagnet inside the base.

Preferably, one end of the heating block, which is far away from the tin feeding mechanism, is also fixedly provided with a hydraulic rod, the hydraulic rod is made of a hydraulic cylinder in a cross-professional manner, and the hydraulic cylinder is embedded in the base.

Preferably, a handle is fixedly arranged at the upper end of the base and used for holding.

The invention has the beneficial effects that: the invention realizes the replacement of the circuit board chip by a mechanical matching mode, has more remarkable effect on improving the convenience of personal protection operation, is internally provided with a clamping mechanism, can be used for clamping the chip, a tin conveying mechanism, a tin bar conveying mechanism and a tin sucking mechanism, and can be used for sucking out molten tin. The invention has the advantages of low cost, simple structure, high automation degree and suitability for large-area popularization.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view in the direction A-A of FIG. 1 according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view at B in FIG. 2 according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view at C of FIG. 3 according to an embodiment of the present invention;

FIG. 5 is a schematic view of the direction D-D in FIG. 4 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The circuit board device replacing equipment described in conjunction with the attached figures 1-5 comprises a base 10, wherein a tin feeding mechanism 57 is arranged inside the base 10, the tin feeding mechanism 57 comprises a clamping base 17, a clamping sliding groove 18 is formed inside the clamping base 17, two clamping sliding blocks 19 are arranged inside the clamping sliding groove 18 in a sliding manner, a threaded sleeve 21 is fixedly arranged at the lower end of each clamping sliding block 19, the threaded sleeve 21 is in threaded connection with a lead screw 20, the thread directions of the two threaded sleeves 21 are opposite, a motor shaft 30 is fixedly arranged at the right end of the lead screw 20, the motor shaft 30 is controlled to rotate by a lead screw motor 29, the lead screw motor 29 is embedded inside the clamping base 17, an elastic cylinder 22 is fixedly arranged at the lower end of the threaded sleeve 21, an elastic groove 24 is formed inside the elastic cylinder 22, an elastic sliding block 25 is arranged inside the elastic groove 24 in a sliding manner, and a clamping pressure spring 23 is fixedly, one end of the clamping pressure spring 23, which is far away from the elastic sliding block 25, is fixedly connected with the inner wall of one side of the elastic groove 24, which is far away from the elastic sliding block 25, the lower end of the elastic sliding block 25 is fixedly provided with a clamping rod 26, the clamping rod 26 is used for clamping a chip, the tin conveying mechanism 57 is used for clamping a chip, the clamping pressure spring 23 is used for protecting the chip when the tin conveying mechanism 57 clamps the chip, when in use, the lead screw motor 29 controls the motor shaft 30 to rotate, the motor shaft 30 drives the lead screw 20 to rotate, the lead screw 20 drives the thread sleeves 21, the two thread sleeves 21 are close to each other, the two thread sleeves 21 drive the respective clamping sliding blocks 19 to be close to each other, the two thread sleeves 21 drive the respective elastic cylinders 22 to be close to each other, and the two elastic cylinders 22 drive the respective clamping rods 26 to be close to each other by driving, the two clamping rods 26 clamp the chip, and the two clamping compression springs 23 compress; the tin feeding mechanism 57 is provided with tin sucking mechanisms 58 on two sides, the tin sucking mechanisms 58 are arranged inside the base 10, the tin sucking mechanisms 58 comprise tin bar motors 33 embedded inside the base 10, the tin bar motors 33 control tin bar shafts 35, tin bar wheels 34 are fixedly arranged at the front ends of the tin bar shafts 35, tin bars 31 are wound outside the tin bar wheels 34, the tin bars 31 penetrate through tin bar sliding tubes 32 through sliding tube grooves 59, the tin bar sliding tubes 32 are in sliding connection with the sliding tube grooves 59, the right ends of the tin bar sliding tubes 32 are fixedly connected with heating blocks 27, the heating blocks 27 can be electrified and heated, tin guide blocks 28 are fixedly arranged at the right ends of the heating blocks 27, the tin bars 31 further penetrate through the heating blocks 27 and the tin guide blocks 28, the tin sucking mechanisms 58 are used for feeding the tin bars 31, when the tin bar motors 33 control the tin bar shafts 35 to rotate, the tin bar shafts 35 drive the tin bar wheels 34 to rotate, the tin bar 31 is spread outside the tin bar wheel 34, and the tin bar 31 passes through the slide groove 59 to the right side of the heating block 27 through the tin bar slide 32, the heating block 27 and the tin guide block 28; a sliding tube groove 59 is further arranged on one side, away from the tin feeding mechanism 57, of the tin absorbing mechanism 58, the sliding tube groove 59 comprises a tin absorbing cavity 36 arranged inside the heating block 27, the tin absorbing cavity 36 is communicated with the clamping mechanism 56, the clamping mechanism 56 is arranged inside the tin absorbing tube 39, the right end of the tin absorbing tube 39 is fixedly connected with the left end of the heating block 27, the tin absorbing tube 39 is slidably connected with the tin absorbing groove 40, the left end of the tin absorbing tube 39 is fixedly provided with a tin absorbing base 44 and a tin discharging tube 51, the tin absorbing base 44 is internally provided with a negative pressure groove 45, the negative pressure groove 45 is communicated with the clamping mechanism 56, a sealing block 50 is slidably arranged inside the negative pressure groove 45, a tin absorbing connecting rod 43 is fixedly arranged at the upper end of the sealing block 50, a pressing block 41 is fixedly arranged at the upper end of the tin absorbing connecting rod 43, a tin absorbing pressure spring 42 is arranged outside the tin absorbing connecting rod 43, and the upper end of the tin absorbing pressure spring 42 is fixedly, the lower end of the tin absorption pressure spring 42 is fixedly connected with the upper end of the tin absorption base 44, a non-return sliding groove 47 is further formed in the tin absorption base 44, a non-return iron slider non-return sliding block 48 is arranged in the non-return sliding groove 47 in a sliding manner, a wedge block 49 is fixedly arranged at one end, close to the sealing block 50, of the non-return iron slider non-return sliding block 48, a non-return pressure spring 46 is fixedly arranged at one end, far away from the sealing block 50, of the non-return iron slider non-return sliding block 48, the inner wall of one side, far away from the non-return iron slider non-return sliding block 48, of the non-return sliding block 48 is fixedly connected with the non-return sliding groove 47, the non-return sliding groove 47 is arranged in the tin absorption base 44, a non-return electromagnet 60 is further arranged at one end, far, tin discharging opening 55 is formed in tin discharging pipe 51, tin discharging opening 55 is communicated with clamping mechanism 56, turning shaft 53 is arranged at the front end of the lower right side of tin discharging pipe 51 in a rotating mode, turning shaft 53 is arranged at the front end of turning shaft 53 in a rotating mode, torsion spring 54 is arranged on the outer side of turning shaft 53, the rear end of torsion spring 54 is fixedly connected with tin discharging pipe 51, the front end of torsion spring 54 is fixedly connected with one-way plate 52, sliding pipe groove 59 is used for sucking out waste molten tin, when in use, pressing block 41 is pressed manually, pressing block 41 moves downwards, pressing block 41 drives tin sucking connecting rod 43 to move downwards, tin sucking pressure spring 42 is compressed, tin sucking connecting rod 43 drives sealing block 50 to move downwards, sealing block 50 pushes wedge block 49 to move towards the side far away from sealing block 50, wedge block 49 returns after being compressed by check pressure spring 46 when check iron slide block 48 passes through check iron slide block, the restriction of wedge 49 sealed piece 50 resets, heating block 27 circular telegram heating melts tin, two non return electro-magnet 60 circular telegram, two non return iron sliders non return slider 48 is at respective non return electro-magnet 60 magnetic force down to being close to the non return electro-magnet 60 direction removes, two non return iron sliders non return slider 48 drives separately the wedge 49 is close to the non return electro-magnet 60 one end removes, two the compression of non return pressure spring 46, two the wedge 49 no longer limits separately sealed piece 50, the pressing block 41 is in inhale tin pressure spring 42's elastic force effect and is reset down, negative pressure zone is formed in the negative pressure tank 45, melts tin via under atmospheric pressure the effect inhale tin chamber 36 with fixture 56 falls into at last under the action of gravity inside tin discharge port 55, melts the tin cooling and falls on one way board 52, under the action of gravity of molten tin, the turnover shaft 53 is turned downwards and then reset, the torsion spring 54 is compressed and then reset, and the cooled molten tin falls into the external space.

Beneficially, centre gripping base 17 upper end is fixed and is equipped with connecting rod 13, the fixed iron slider 12 that is equipped with in connecting rod 13 upper end,

iron slider

12 and 14 sliding connection of vertical spout, vertical spout 14 set up in inside the base 10, the connecting rod 13 outside still is equipped with pressure spring 15, pressure spring 15 upper end with iron slider 12 fixed connection, pressure spring 15 lower extreme with launch electromagnet 16 fixed connection, it inlays and locates to launch electromagnet 16 inside the base 10.

Advantageously, a hydraulic rod 37 is further fixedly arranged at one end of the heating block 27 far away from the tin feeding mechanism 57, the hydraulic rod 37 is spanned by a hydraulic cylinder 38, and the hydraulic cylinder 38 is embedded inside the base 10.

Advantageously, a handle 11 is fixedly arranged at the upper end of the base 10, and the handle 11 is used for holding.

Initial state: the compression spring 15 is in a normal state, the two clamping compression springs 23 are in a normal state, the two check compression springs 46 are in a normal state, the two torsion springs 54 are in a normal state, the two thread bushings 21 are away from each other, the ejection electromagnet 16 is in a power-off state, the two check electromagnets 60 are in a power-off state, and the two hydraulic rods 37 are located at the bottommost portions of the respective hydraulic cylinders 38.

The using method comprises the following steps: when a chip needs to be replaced, the handle 11 is held by hand to enable the chip to be detached to be located on the lower side of the two clamping rods 26, the ejection electromagnet 16 is electrified to attract the iron sliding block 12 to move downwards, the compression springs 15 are compressed, the chip is located between the two clamping rods 26, the motor shaft 30 is controlled by the screw motor 29 to rotate, the motor shaft 30 drives the screw rod 20 to rotate, the screw rod 20 transmits power to the threaded sleeves 21, the two threaded sleeves 21 are close to each other, the two threaded sleeves 21 drive the respective clamping sliding blocks 19 to be close to each other, the two threaded sleeves 21 drive the respective elastic cylinders 22 to be close to each other, the two elastic cylinders 22 drive the respective clamping rods 26 to be close to each other by driving the respective elastic sliding blocks 25, the two clamping rods 26; the pressing block 41 is manually pressed, the pressing block 41 moves downwards, the pressing block 41 drives the tin absorption connecting rod 43 to move downwards, the tin absorption pressure spring 42 is compressed, the tin absorption connecting rod 43 drives the sealing block 50 to move downwards, the sealing block 50 pushes the wedge-shaped block 49 to move towards one side far away from the sealing block 50, the wedge-shaped block 49 resets after being compressed by the check pressure spring 46 when passing through the check iron slide block check slide block 48, the wedge-shaped block 49 limits the resetting of the sealing block 50, the two hydraulic cylinders 38 control the respective hydraulic rods 37 to move towards the outside of the hydraulic cylinders 38, the heating block 27 is contacted with a chip welding spot, the heating block 27 is electrified to heat the molten tin, the soldering tin is molten, the catapult electromagnet 16 is powered off, the iron slide block 12 resets under the elastic force of the pressure spring 15, the iron slide block 12 drives the tin feeding mechanism 57 to reset through the connecting rod 13, the clamping rod 26 in the tin feeding mechanism 57 drives the, the two non-return iron slide block non-return slide blocks 48 move towards the direction close to the non-return electromagnet 60 under the action of the magnetic force of the non-return electromagnet 60, the two non-return iron slide block non-return slide blocks 48 drive the respective wedge-shaped block 49 to move close to one end of the non-return electromagnet 60, the two non-return pressure springs 46 compress, the two wedge-shaped blocks 49 do not limit the respective sealing block 50 any more, the pressing block 41 resets under the action of the elastic force of the tin suction pressure spring 42, a negative pressure area is formed in the negative pressure groove 45, molten tin finally falls into the tin discharge port 55 under the action of gravity through the tin suction cavity 36 and the clamping mechanism 56 under the action of air pressure, the molten tin is cooled to fall onto the upper end of the one-way plate 52, the overturning shaft 53 resets after downwards overturning under the action of the gravity of the molten tin, the torsion spring 54 resets; when a chip is required to be installed, the waste chip is replaced by a new chip and clamped between the two clamping rods 26 again, the ejection electromagnet 16 is electrified to attract the iron slide block 12 to move downwards, the pressure spring 15 is compressed, the chip is positioned between the upper ends of the circuit boards, the tin bar motor 33 controls the tin bar shaft 35 to rotate, the tin bar shaft 35 drives the tin bar wheel 34 to rotate, the tin bar 31 is unfolded outside the tin bar wheel 34, the tin bar 31 reaches the right side of the heating block 27 through the sliding pipe groove 59 via the tin bar sliding pipe 32, the heating block 27 and the tin guide block 28, the two heating blocks 27 are electrified to melt the tin bar 31, then the two heating blocks 27 are powered off, the new chip is welded at the upper end of the circuit boards, the lead screw motor 29 controls the motor shaft 30 to rotate reversely, the motor shaft 30 drives the lead screw 20 to rotate reversely, the lead screw 20 is driven to the thread sleeves 21, the two thread sleeves 21 are far away from each other, the two thread sleeves 21 drive the, the two elastic cylinders 22 drive the clamping rods 26 to be away from each other by driving the respective elastic sliding blocks 25, the two clamping rods 26 do not clamp the chip any more, and the chip welding is completed; after the chip welding is finished, the ejection electromagnet 16 is powered off, and all mechanisms are reset.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a circuit board device changes equipment, includes the base, its characterized in that: the tin feeding mechanism is arranged in the base and comprises a clamping base, a clamping sliding groove is formed in the clamping base, two clamping sliding blocks are arranged in the clamping sliding groove in a sliding mode, a threaded sleeve is fixedly arranged at the lower end of each clamping sliding block and is in threaded connection with a lead screw, the thread directions of the two threaded sleeves are opposite, a motor shaft is fixedly arranged at the right end of the lead screw, the motor shaft is controlled to rotate by a lead screw motor, the lead screw motor is embedded in the clamping base, an elastic cylinder is fixedly arranged at the lower end of the threaded sleeve, an elastic groove is formed in the elastic cylinder, an elastic sliding block is arranged in the elastic groove in a sliding mode, a clamping pressure spring is fixedly arranged at the end, away from each other, of the two elastic sliding blocks, one end, away from the elastic sliding block, of the clamping pressure spring is fixedly, a clamping rod is fixedly arranged at the lower end of the elastic sliding block and used for clamping a chip, the tin conveying mechanism is used for clamping the chip, and the clamping pressure spring is used for protecting the chip when the tin conveying mechanism clamps the chip; the tin conveying mechanism is characterized in that tin absorbing mechanisms are arranged on two sides of the tin conveying mechanism, the tin absorbing mechanisms are arranged in the base, the tin absorbing mechanisms comprise tin bar motors embedded in the base, tin bar shafts are controlled by the tin bar motors, tin bar wheels are fixedly arranged at the front ends of the tin bar shafts, tin bars are wound on the outer sides of the tin bar wheels, the tin bars penetrate through tin bar sliding tubes through sliding tube grooves, the tin bar sliding tubes are connected with the sliding tube grooves in a sliding mode, the right ends of the tin bar sliding tubes are fixedly connected with heating blocks, the heating blocks can be electrified for heating, tin guide blocks are fixedly arranged at the right ends of the heating blocks, the tin bars further penetrate through the heating blocks and the tin guide blocks, and the tin absorbing mechanisms are used for conveying the tin bars; a sliding tube groove is further arranged on one side, away from the tin conveying mechanism, of the tin suction mechanism, the sliding tube groove comprises a tin suction cavity arranged inside the heating block, the tin suction cavity is communicated with the clamping mechanism, the clamping mechanism is arranged inside the tin suction pipe, the right end of the tin suction pipe is fixedly connected with the left end of the heating block, the tin suction pipe is slidably connected with the tin suction groove, a tin suction base and a tin discharge pipe are fixedly arranged at the left end of the tin suction pipe, a negative pressure groove is formed inside the tin suction base and is communicated with the clamping mechanism, a sealing block is slidably arranged inside the negative pressure groove, a tin suction connecting rod is fixedly arranged at the upper end of the sealing block, a pressing block is fixedly arranged at the upper end of the tin suction connecting rod, a tin suction pressure spring is arranged outside the tin suction connecting rod, the upper end of the tin suction pressure spring is fixedly connected with the pressing block, and the lower end of the tin suction pressure spring is fixedly connected with, a non-return sliding groove is also formed in the tin absorbing base, a non-return iron slide block non-return sliding block is arranged in the non-return sliding groove in a sliding manner, a wedge block is fixedly arranged at one end, close to the sealing block, of the non-return iron slide block non-return sliding block, a non-return pressure spring is fixedly arranged at one end, far away from the sealing block, of the non-return iron slide block non-return sliding block, one end, far away from the non-return iron slide block, of the non-return pressure spring is fixedly connected with the inner wall of one side, far away from the non-return iron slide block, of the non-return sliding groove, the non-return sliding groove is formed in the tin absorbing base, a non-return electromagnet is further arranged at one end, far away from the sealing block, of the non-return sliding groove, the non-return electromagnet is embedded in, the front end of the turnover shaft rotates to be provided with the turnover shaft, the outer side of the turnover shaft is provided with a torsion spring, the rear end of the torsion spring is fixedly connected with the tin discharging pipe, the front end of the torsion spring is fixedly connected with the one-way plate, and the sliding pipe groove is used for sucking out waste molten tin.

2. A circuit board device replacing apparatus according to claim 1, wherein: the fixed connecting rod that is equipped with in centre gripping base upper end, the fixed iron slider that is equipped with in connecting rod upper end, iron slider and vertical spout sliding connection, vertical spout seted up in inside the base, the connecting rod outside still is equipped with the pressure spring, the pressure spring upper end with iron slider fixed connection, the pressure spring lower extreme with launch electromagnet fixed connection, it inlays to locate to launch the electromagnet inside the base.

3. A circuit board device replacing apparatus according to claim 1, wherein: and a hydraulic rod is fixedly arranged at one end of the heating block, which is far away from the tin feeding mechanism, and is crossed professionally by a hydraulic cylinder which is embedded in the base.

4. A circuit board device replacing apparatus according to claim 1, wherein: the base upper end is fixed and is equipped with the handle, the handle is used for handheld.