CN108971688B

CN108971688B - Processing system of LED bulb lamp

Info

Publication number: CN108971688B
Application number: CN201810898682.0A
Authority: CN
Inventors: 潘明安
Original assignee: Foshan Xinxinyi Electric Appliance Co ltd
Current assignee: FOSHAN XINXINYI ELECTRIC APPLIANCE Co.,Ltd.
Priority date: 2018-08-08
Filing date: 2018-08-08
Publication date: 2021-06-22
Anticipated expiration: 2038-08-08
Also published as: CN108971688A

Abstract

The invention discloses a processing system of an LED bulb lamp, which comprises a rack; a coating station; a material leaking plate; a movable frame which can move left and right and is arranged on the frame; the discharging piece is arranged on the movable frame and can move up and down and is used for coating the solder paste on the material leaking plate in the left-right movement process of the movable frame; the storage box is used for storing solder paste and is communicated with the discharging piece through a feeding channel; the scraping device is arranged on the movable frame and used for scraping redundant solder paste on the material leaking plate in the process of moving the movable frame left and right; and the buffer device is arranged on the rack and used for reducing the impact between the material leaking plate and the coating platform in the process that the material leaking plate moves downwards. According to the invention, through the arrangement of the buffer device, when the material leaking part moves down to press the material processed by the belt, the impact force between the material leaking part and the coating table can be effectively relieved, so that the damage rate of parts is reduced, and the service life of equipment is prolonged.

Description

Processing system of LED bulb lamp

Technical Field

The invention belongs to the technical field of energy-saving illumination, and particularly relates to a processing system of an LED bulb lamp.

Background

An LED lamp is a solid-state semiconductor device capable of converting electrical energy into visible light, which can directly convert electricity into light. The LED bulb lamp comprises a spherical bulb shell and a lamp piece arranged in the bulb, wherein the lamp piece is generally composed of a circuit board and a lamp bead welded on the circuit board, in the production process, solder paste is coated on the circuit board through a material leakage plate with a hole, then the lamp bead is installed on the position coated with the solder paste, and the circuit board is heated to harden the solder paste, so that the welding of the lamp bead is realized.

However, in the conventional solder paste coating apparatus, the solder paste accumulated on the solder paste leaking plate is usually pushed from one side to the other side by the pushing arm moving left and right, so that the solder paste leaks to the circuit board through the through hole on the solder paste leaking plate. But because the arm that pushes away can only promote the material to the unilateral, the material will be piled up at the unilateral, needs the manual work after a period to shovel the tin cream to the opposite side on, and work efficiency is lower. The material leakage plate needs to move up and down to compress the circuit board, so that the coating effect is ensured; the collision appears in the flitch that leaks before with coating platform or circuit board easily, and equipment causes the damage easily, and life is shorter.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the processing system of the LED bulb lamp, which has long service life and high working efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: a processing system of an LED bulb lamp comprises

A frame;

the coating table is arranged on the rack and used for positioning the material to be coated;

the material leaking plate can move up and down and is arranged above the coating platform, and material leaking holes for solder paste to pass through are formed in the material leaking plate;

a movable frame which can move left and right and is arranged on the frame;

the discharging piece is arranged on the movable frame and can move up and down and is used for coating the solder paste on the material leaking plate in the left-right movement process of the movable frame;

the storage box is used for storing solder paste and is communicated with the discharging piece through a feeding channel;

the scraping device is arranged on the movable frame and used for scraping redundant solder paste on the material leaking plate in the process of moving the movable frame left and right;

and the buffer device is arranged on the rack and used for reducing the impact force between the material leaking plate and the coating platform in the process that the material leaking plate moves downwards.

According to the invention, through the arrangement of the buffer device, when the material leaking part moves down to press the material processed by the belt, the impact force between the material leaking part and the coating table can be effectively relieved, so that the damage rate of parts is reduced, and the service life of equipment is prolonged; the movable rack is provided with the scraping device, the movable rack drives the discharging piece to coat the solder paste on the material leaking plate, the material scraping device can directly scrape off redundant solder paste from the material leaking plate, then one layer of thin solder paste is prevented from being left on the material leaking plate, the influence on the next coating of the solder paste can be avoided, manual scraping is not needed, and the work efficiency is high.

Furthermore, the buffer device comprises buffer plates positioned on the left side and the right side of the coating platform and elastic buffer components acting on the buffer plates, and flexible layers matched with the material leaking plates are arranged on the buffer plates; the elastic buffer component and the flexible layer are arranged to buffer the impact force, so that the service life of the equipment is effectively prolonged.

Furthermore, the frame comprises a box body at the lower part, a placing cavity arranged in the box body, a box door connected to the box body in a turnover way and a frame body arranged on the box body, and the elastic buffer part is arranged on the upper surface of the box body; the placing cavity can be used for placing materials to be processed or other tools and the like, and good space utilization is achieved.

Furthermore, the elastic buffer component comprises a spring mounting seat arranged on the box body, a spring sleeved on the spring mounting seat and a limiting seat arranged at the lower part of the buffer plate; the upper end of the spring is sleeved outside the limiting seat; the spring is rapidly installed through the spring installation seat and the limiting seat, and the assembly is simple and easy.

Furthermore, a limiting rod is arranged on the limiting seat, and through holes for the limiting rod to pass through are respectively arranged on the spring mounting seat and the box body; when the spring took place to compress, the gag lever post will reciprocate in the through-hole, realizes good spacing hire, and then effectively places the buffer board and appears rocking about, improves buffering effect.

Further, the tin paste scraping device comprises a residual material recovery device, and is used for conveying the tin paste scraped by the scraping device into the storage box; thereby can directly be carried to the storage case from the material that scrapes off on the flitch that leaks, can not appear tin cream too much pile up and expose in the external world and the condition that sclerosis or viscosity are too big and be difficult to the coating, further improve the firm in connection degree that the tin cream corresponds the lamp pearl, improve the qualification rate of the product that the preparation obtained.

Furthermore, the scraping device comprises an aggregate shell fixedly arranged on the side part of the movable frame, a feed inlet arranged on one side part of the aggregate shell, a scraper knife formed at the bottom of the aggregate shell, a movable scraper part arranged on the scraper knife and capable of being attached to the material leaking plate in the scraping process, and a residual material recovery device used for conveying the material in the aggregate shell into the storage box; through the setting of activity shovel material part for the spiller can be more good laminating on leaking the flitch scraping the material in-process, and the residual rate that strikes off the tin cream is low, guarantees to leak on the flitch through basically not having the tin cream after striking off and remains.

Furthermore, the excess material recovery device comprises an opening arranged at the upper part of the aggregate shell, a feeding pipeline with two ends respectively connected with the opening and the storage box, a cover pipe sleeved outside the feeding pipeline, an air transmission channel formed between the cover pipe and the feeding pipeline, an air transmission hole arranged on the side wall of the feeding pipeline and communicated with the air transmission channel, and an air supply piece used for supplying air to the air transmission channel; preferably, the gas transmission holes are arranged in an inclined manner from bottom to top, gas in the gas transmission channel can be conveyed into the feeding pipeline through the gas transmission holes, upward flowing gas flow is formed in the feeding pipeline, and the upward flowing gas flow always has upward suction to materials, so that even if a small part of materials are arranged in the material collecting box in the moving frame moving back process, the part of materials can be subjected to the upward suction and cannot flow out of the material collecting box, the phenomenon that tin paste flows back to the material leaking plate again in the moving frame moving back process is avoided, and the scraping rate is improved; secondly, this air current can also drive the quick upwards transport of the material in the shell that gathers materials to in sending the quick pump of tin cream that the scraper struck off to the storage case, reduce the time of tin cream and outside air contact.

In summary, the invention has the following advantages: through the arrangement of the buffer device, when the material leaking part moves downwards to press the materials processed by the belt, the impact force between the material leaking part and the coating table and the materials can be effectively relieved, so that the damage rate of parts is reduced, and the service life of equipment is prolonged; secondly, accessible scraper is direct strikes off unnecessary tin cream by leaking on the flitch, and then avoids leaking and remain the thin tin cream of one deck on the flitch, can not be to the influence that causes of coating tin cream next time, also need not to carry out the manual work and strikes off, and work efficiency is high.

Drawings

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

FIG. 2 is a longitudinal sectional view of the present invention.

Fig. 3 is an enlarged view at E in fig. 2.

FIG. 4 is a longitudinal sectional perspective view of FIG. 1

Fig. 5 is a perspective view of a part of the structure of the present invention.

Fig. 6 is a schematic view of a part of the structure of the residue recovery device of the present invention.

Fig. 7 is a cross-sectional view of fig. 6.

Fig. 8 is an enlarged view of fig. 7 at a.

Fig. 9 is an enlarged view at D in fig. 8.

Fig. 10 is an enlarged view at B in fig. 7.

Fig. 11 is an enlarged view at C in fig. 7.

Fig. 12 is a longitudinal sectional view of fig. 6.

Fig. 13 is a schematic structural view of the moving frame according to the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

As shown in fig. 1-13, a processing system of an LED bulb lamp includes a frame 1, a coating table 2, a material leaking plate 3, a moving frame 4, a discharging member 5, a material storage box 6, a scraping device, a remainder recycling device, and a buffering device; the coating table 2 is arranged on the rack 1, a plurality of threaded holes and two strip-shaped plates made of metal are arranged on the coating table 2, the strip-shaped plates are connected with the threaded holes through screws, the positions of the strip-shaped plates can be adjusted by connecting the adjusting screws with the threaded holes at different positions, materials to be coated, such as circuit boards, can be placed on the strip-shaped plates, and the materials are positioned through the strip-shaped plates; the material leaking plate 3 can be arranged above the coating table 2 in a vertically moving mode, specifically, the material leaking plate 3 is connected with the moving frame through a connecting plate, the rear side of the connecting plate is connected with an air cylinder or a hydraulic cylinder, and the material leaking plate 3 is driven to move up and down through the air cylinder or the hydraulic cylinder; the solder paste leaking plate 3 is provided with solder paste leaking holes 31 for solder paste to pass through, the solder paste can leak to the circuit board through the solder paste leaking holes 31, the positions of the solder paste leaking holes 31 correspond to the positions of the circuit board to which the lamp beads need to be pasted one by one, and the solder paste leaking plate can be adjusted according to actual production; the movable frame 4 is made of metal, a rodless cylinder is arranged on the rack, the movable frame is connected to the rodless cylinder, and therefore the movable frame 4 can be driven to move left and right relative to the rack when the rodless cylinder works; the discharging part 5 is connected with an air cylinder or a hydraulic rod, and the discharging part is driven by the air cylinder or the hydraulic rod to move up and down on the movable frame; in the process of left and right movement of the movable frame 4, the discharging piece 5 can coat the solder paste on the material leaking plate 3; the storage box 6 is made of metal, is used for storing solder paste, and is communicated with the discharging piece 5 through a feeding channel 61; the scraping device is arranged on the movable frame 4 and is used for scraping redundant solder paste on the material leaking plate 3 in the process of moving the movable frame left and right; and then the accessible scraper is direct to strike off unnecessary tin cream by leaking on the flitch, and then avoids leaking and remain the thin tin cream of one deck on the flitch, can not be to the influence that causes of coating tin cream next time, also need not to carry out the manual work and strikes off, and work efficiency is high.

The buffer device is arranged on the frame 1 and used for reducing the impact force between the material leaking plate and the coating platform 2 in the process that the material leaking plate 3 moves downwards; the rack comprises a box body 11, a placing cavity 12, a box door 13 and a rack body 14, wherein the box body is made of metal and is arranged in a hollow mode to form the placing cavity 12, and an opening is formed in the side portion of the box body; the box door 13 is also made of metal, and one side of the box door 13 is hinged on the opening of the box body, so that the box door 13 can be turned over relative to the box body; the frame body 14 is arranged on the box body, and the material leaking plate 3, the moving frame 4 and the like are arranged on the frame body; specifically, the buffer device comprises buffer plates 91 positioned on the left side and the right side of the coating platform 2 and elastic buffer components acting on the buffer plates, the elastic buffer components are arranged on the upper surface of the box body 11, the buffer plates are made of metal, flexible layers 911 matched with the material leaking plates 3 are arranged on the buffer plates, and preferably the flexible layers are made of rubber; the elastic buffer component comprises a spring mounting seat 92 made of metal, a spring 93 and a limiting seat 94 made of metal, the spring mounting seat 92 is arranged on the box body, the lower part of the buffer plate of the limiting seat 9 is sleeved on the spring mounting seat 92, the lower end of the spring is fixedly sleeved on the limiting seat 94, and the upper end of the spring is fixedly sleeved on the limiting seat 94; preferably, the limiting seat 94 is fixedly connected with a metal limiting rod 941 by welding, and the spring mounting seat 92 and the box body 11 are respectively provided with a through hole 95 for the limiting rod to pass through.

Specifically, the scraping device comprises a material collecting shell 71, a material inlet 72, a scraper knife 73 and a movable material shoveling part; the material collecting shell 71 is made of metal and is fixedly arranged on the side part of the movable frame, the feed port 72 is arranged at the lower part of one side wall of the material collecting shell, and redundant solder paste on the material leaking plate can enter the material collecting shell through the feed port; the scraper knife 73 is directly formed by a bottom shell of the aggregate shell, specifically, the scraper knife 73 includes a material guiding portion 731 arranged obliquely and a bending portion 732 arranged at the lower part of the material guiding portion, and the bending portion 732 is specifically arranged parallel to the horizontal plane; the movable material shoveling part is arranged on the shovel blade and can be attached to the material leaking plate in the material scraping process, the shovel blade can be well attached to the material leaking plate in the material scraping process through the arrangement of the movable material shoveling part, the residual rate of scraping the solder paste is low, and the condition that no solder paste is remained on the material leaking plate after scraping is guaranteed; specifically, the movable material shoveling part comprises a scraping piece 791 made of rubber and a torsion spring 792 arranged on the scraping piece, one end of the scraping piece is embedded with a rotating shaft made of metal, and the rotating shaft is rotatably arranged on the end part of the scraper knife in a penetrating way; the torsional spring is sleeved at one end of the scraping piece, in which the rotating shaft is embedded, and one end of the torsional spring is fixedly connected with the scraper knife, and the other end of the torsional spring is fixedly connected with the scraping piece 791; most preferably, the upper surface and the lower surface of the scraping piece 791 are respectively of an arc structure, the arc radian of the upper surface is larger than that of the lower surface, and the scraping piece can be turned, so that in the process that the moving frame drives the scraper knife to move to scrape materials, the scraping piece is turned to a state that the end part of the scraping piece is tightly attached to the material leaking plate, and the residual rate in the process of scraping materials is further reduced; and because the in-process scraping piece that moves back of removal frame will appear turning over on of small amplitude under the effect of frictional force, through the upper surface that will scrape the piece for the arc structure setting, can be to scraping remaining tin cream gathering in the curved bottom on the piece, compare in scraping the piece upper surface for planar structure, can avoid moving the in-process that moves back of frame, the tin cream on the scraping piece flows to the condition on the hourglass material board along scraping the piece surface, further reduces the tin cream residual condition after scraping.

Further, be equipped with on the other end that scrapes 791 and the torsional spring corresponds and scrape the portion 792 of scraping that the tip is buckled down and is formed through scraping, can increase and scrape the inseparable degree of laminating between piece and the hourglass flitch, the reinforcing is scraped the material effect.

The excess material recovery device is used for conveying the solder paste scraped by the scraping device into the storage box 6, and specifically comprises an opening 74 arranged at the upper part of the aggregate shell 71, a feeding pipeline 75 with two ends respectively connected with the opening and the storage box, a cover pipe 76 sleeved outside the feeding pipeline, an air transmission channel 77 formed between the cover pipe and the feeding pipeline, an air transmission hole 78 arranged on the side wall of the feeding pipeline and communicated with the air transmission channel, and an air supply piece used for supplying air to the air transmission channel; the feeding pipeline and the cover pipe are both made of plastics, the air transmission holes 78 are arranged in a plurality of circles, and the air transmission holes 78 in the plurality of circles are uniformly distributed along the length direction of the feeding pipeline at intervals; and preferably, the air delivery hole 78 is arranged obliquely from bottom to top; the air supply piece is a blower directly purchased from the market and is connected with the cover pipe through an air transmission hose; the gas in the gas transmission channel is conveyed into the feeding pipeline through the gas transmission hole, upward flowing gas flow is formed in the feeding pipeline, and the upward flowing gas flow always has upward suction to the materials, so that even if a small part of materials are arranged in the material collecting box in the moving frame moving back process, the part of materials are also subjected to the upward suction and cannot flow out of the material collecting box, the phenomenon that tin paste flows back to the material leaking plate again in the moving frame moving back process is avoided, and the scraping rate is improved; secondly, this air current can also drive the quick upwards transport of the material in the shell that gathers materials to in sending the quick pump of tin cream that the scraper struck off to the storage case, reduce the time of tin cream and outside air contact.

Further, the discharging member 5 includes a housing 51, a cavity 52 disposed in the housing for storing solder paste, a discharging pipe 53 for connecting the cavity and the storage box, a discharging port 54 disposed at a lower portion of the cavity, and an opening/closing member 55 capable of moving up and down to open or close the discharging port; the shell 51 is made of metal, and the inside of the shell is hollow so as to form the cavity 52; the discharge pipe can be a hard pipe made of plastic or a hose made of rubber; the opening and closing piece is a strip-shaped plate or block made of metal or plastic; solder paste is conveyed onto the material leaking plate in a discharging mode of the discharging port, a gap with a certain distance can be arranged between the discharging port and the material leaking plate, and then the coating thickness of the solder paste on the material leaking plate is thicker than that of the solder paste pushed by the pushing plate, so that the condition that the connection effect of the lamp beads and the circuit board is influenced due to too little solder paste can be avoided; after the solder paste has a certain thickness, the solder paste has stronger fluidity, so that the solder paste can be supplemented to the positions where the solder paste does not exist or is less, the solder paste is more uniformly distributed on the material leaking plate, the solder paste can be fully filled in each material leaking hole, and the connecting effect between the lamp beads and the circuit board is further ensured; and through the setting of the opening and closing piece, the discharging hole can be closed when the movable frame moves back, and no solder paste is discharged when the movable frame moves back.

The left side and the right side of the shell 51 are respectively provided with a sliding block 511, the moving frame 4 is provided with a sliding rail 41, and the sliding blocks can move up and down along the sliding rail; specifically, the opening and closing member 55 includes a blocking head 551, a connecting arm 552 and a driving portion 553, the blocking head 551, the connecting arm 552 and the driving portion 553 are integrally formed, and one end of the connecting arm 552 is connected with the blocking head 551, and the other end is connected with the driving portion 553, so that the opening and closing member is shaped like an i shape; the sealing head 551 penetrates into the shell, the width of the discharge hole 54 is larger than that of the connecting arm 552, and the width of the sealing head 551 is larger than that of the discharge hole 54; further, the bottom of the slide rail 41 is provided with an abutting part 411, which is a convex part formed by the upward protrusion of the bottom of the slide rail; pressing parts 42 are respectively arranged on the two sides of the movable frame 4 corresponding to the slide rails, the pressing parts are protrusions formed by directly extending outwards from the side walls of the movable frame, and the positions of the pressing parts are located above the abutting parts; preferably, the width of the driving part is larger than that of the shell, so that the pressing part can block the driving from moving upwards after the shell moves upwards to the positioned position; specifically, in the process that the slider 511 moves down along the slide rail 41, the driving portion 553 abuts against the abutting portion 411 to move the opening and closing member 55 upward, so as to open the discharge hole, and the solder paste can flow out from the discharge hole downward; when the slider 511 moves up along the slide rail 41, the driving portion 553 abuts against the pressing portion 42 to move the opening and closing member 55 downward, so that the opening and closing member closes the discharge hole; the opening and closing of the discharge hole by the opening and closing piece are realized in a mechanical matching way, so that the failure rate is low; and set up the splenium, can give the piece pressure of opening and close from top to bottom when opening and close the discharge gate realization, compare in the circumstances that only closes the discharge gate through the self gravity of opening and close the piece, the piece is more stable to closing of discharge gate, effectively avoids removing the frame and moves the in-process material and leak to the flitch on by discharge gate department.

Preferably, the bottom of the shell 51 is provided with a sealing element 512 arranged around the discharge port, the sealing element is a sealing ring embedded in the bottom of the shell, and when the opening and closing element seals the discharge port, the lower surface of the sealing head contacts with the sealing ring, so that a good sealing effect is achieved, and solder paste is prevented from flowing out from the discharge port.

In order to improve the fluidity of the solder paste, a stirring component and a material guide component 61 are arranged on the material storage box 6, and the material conveyed back into the material storage box can be mixed with the solder paste and the original solder paste in the material storage box through the stirring component, so that the fluidity of the discharged solder paste is ensured; by utilizing the characteristic that the viscosity of the solder paste can be gradually thinned along with the increase of the fluidity and the increase of the shearing rate, the solder paste in the storage chamber is continuously sheared by the stirring part, so that the solder paste is thinned, is easier to be conveyed into the shell through the discharge pipe and flows out from the discharge port; meanwhile, due to the fact that the fluidity of the solder paste after thinning is enhanced, the solder paste is more uniformly distributed on the material leaking plate, and the uniformity of the solder paste coated on the circuit board is further improved.

Specifically, the stirring component includes a concave portion 81, a rotating shaft 82, a stirring paddle 83, a motor 84, and a belt 85; the concave part 81 is a U-shaped concave part formed by downward sinking of the side part of the material storage box, the rotating shaft 82 penetrates through the concave part, and two ends of the rotating shaft extend into the shell; the stirring paddle 83 is fixedly connected to one end of the rotating shaft close to the feeding pipeline, the material guide piece 61 is an impeller fixedly connected to one end of the rotating shaft 82 close to the discharging pipe, and solder paste can be conveyed to the discharging pipe when the impeller rotates; the motor 84 is directly purchased from the market, one end of the belt is sleeved on an output shaft of the motor, the other end of the belt is sleeved on the rotating shaft, and the rotating shaft can be driven to rotate when the motor works, so that the stirring paddle and the impeller are driven to rotate; the impeller rotates to drive the material to be quickly conveyed into the discharge pipe, so that the speed of the solder paste flowing out from the discharge port can be effectively increased, and the condition that the discharge amount of the solder paste is too small due to too small gap between the discharge port and the connecting arm is further caused; secondly, the impeller and the stirring paddle are coaxially arranged, and the impeller and the stirring paddle only need to be jointly provided with one power source, so that energy consumption is saved; preferably, the material storage box 6 extends outwards to form a cylindrical material guide chamber 62, the material guide member 61 is arranged in the material guide chamber 62, and the material discharge pipe is connected with the material guide chamber.

The specific working principle is as follows: firstly, a circuit board to be processed is placed on a coating table for positioning, and then a material leaking plate and a moving frame move downwards together to compress the circuit board; then the discharging part moves downwards and moves to the bottom of the sliding rail, so that the abutting part abuts against the opening and closing part, the discharging port is opened, solder paste is conveyed to the discharging port from the storage box and flows out, and meanwhile, the moving frame moves rightwards, so that the solder paste falls onto the material leaking plate and flows onto a circuit board below through the material leaking hole; when the movable frame moves, the scraping device scrapes residual solder paste on the material leaking plate and conveys the residual solder paste into a storage box through a conveying pipeline; after the belt moving frame moves the right side position of the material leaking plate, the discharging part moves upwards, so that the pressing part extrudes the driving part, and the opening and closing part closes the discharging hole; then the movable frame moves rightwards for a distance so that the scraping device scrapes the residual solder paste; then the movable frame moves back to the initial position leftwards, the material leaking plate moves upwards, and the circuit board is taken down; and then starting a new round of operation, and repeating the operation in the same way.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a system of processing of LED ball bubble lamp which characterized in that: comprises that

A frame (1);

the coating platform (2) is arranged on the rack (1) and used for positioning the material to be coated;

the material leaking plate (3) is arranged above the coating platform (2) and can move up and down, and material leaking holes (31) for solder paste to pass through are formed in the material leaking plate;

a movable frame (4) which can move left and right and is arranged on the frame;

the discharging piece (5) can move up and down and is arranged on the moving frame and used for coating the solder paste on the material leaking plate (3) in the left-right movement process of the moving frame (4);

the storage box (6) is used for storing solder paste and is communicated with the discharging piece (5) through a feeding channel;

the scraping device is arranged on the movable frame (4) and is used for scraping redundant solder paste on the material leaking plate (3) in the process of moving the movable frame left and right;

the buffer device is arranged on the rack (1) and used for reducing the impact force between the material leaking plate and the coating platform (2) in the process that the material leaking plate (3) moves downwards;

the buffer device comprises buffer plates (91) positioned on the left side and the right side of the coating platform (2) and elastic buffer components acting on the buffer plates, and flexible layers (911) matched with the material leaking plates (3) are arranged on the buffer plates;

the rack comprises a box body (11) at the lower part, a placing cavity (12) arranged in the box body, a box door (13) connected to the box body in a turnover way and a rack body (14) arranged on the box body, and the elastic buffer part is arranged on the upper surface of the box body (11);

the elastic buffer component comprises a spring mounting seat (92) arranged on the box body, a spring (93) sleeved on the spring mounting seat and a limiting seat (94) arranged at the lower part of the buffer plate; the upper end of the spring (93) is sleeved outside the limiting seat (94);

a limiting rod (941) is arranged on the limiting seat (94), and through holes (95) for the limiting rod to pass through are respectively formed in the spring mounting seat (92) and the box body (11);

the tin paste scraping device is used for scraping tin paste into a material storage box (6);

the scraping device comprises an aggregate shell (71) fixedly arranged on the side part of the movable frame, a feeding hole (72) arranged on one side part of the aggregate shell, a scraper knife (73) formed at the bottom of the aggregate shell and a movable scraper part arranged on the scraper knife and capable of being attached to the material leaking plate in the scraping process;

the excess material recovery device comprises an opening (74) arranged at the upper part of the aggregate shell (71), a feeding pipeline (75) with two ends respectively connected with the opening and the storage box, a cover pipe (76) sleeved outside the feeding pipeline, an air transmission channel (77) formed between the cover pipe and the feeding pipeline, an air transmission hole (78) arranged on the side wall of the feeding pipeline and communicated with the air transmission channel, and an air supply piece for supplying air to the air transmission channel;

the scraper knife (73) comprises a material guiding part (731) which is obliquely arranged and a bending part (732) which is arranged at the lower part of the material guiding part; the movable material shoveling part comprises a scraping piece (791) made of rubber and a torsion spring arranged on the scraping piece, a rotating shaft made of metal is embedded at one end of the scraping piece, and the rotating shaft is rotatably arranged on the end part of the shovel blade in a penetrating way; the torsional spring is sleeved at one end of the scraping piece, in which the rotating shaft is embedded, one end of the torsional spring is fixedly connected with the scraper knife, and the other end of the torsional spring is fixedly connected with the scraping piece (791); the upper surface and the lower surface of the scraping piece (791) are respectively arranged in an arc structure, and the arc radian of the upper surface is larger than that of the lower surface;

the other end of the scraping piece (791) corresponding to the torsion spring is provided with a scraping part (792) formed by bending the end part of the scraping piece downwards; the material storage box (6) is provided with a stirring component and a material guide piece (61);

the stirring component comprises a concave part (81), a rotating shaft (82), a stirring paddle (83), a motor (84) and a belt (85); the concave part (81) is a U-shaped concave part formed by downwards sinking the side part of the material storage box, the rotating shaft (82) penetrates through the concave part, and two ends of the rotating shaft extend into the shell; the stirring paddle (83) is fixedly connected to one end, close to the feeding pipeline, of the rotating shaft, the material guide piece (61) is fixedly connected to an impeller, close to one end of the discharging pipe, of the rotating shaft (82), and solder paste can be conveyed to the discharging pipe when the impeller rotates.