CN216729963U

CN216729963U - Roller coating device for coating soldering paste on surface of part

Info

Publication number: CN216729963U
Application number: CN202122825302.0U
Authority: CN
Inventors: 苏春生; 王平; 王铁兵
Original assignee: Modine Puxin Thermal Systems Jiangsu Co ltd
Current assignee: Modine Puxin Thermal Systems Jiangsu Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-06-14
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a roll coating device for coating solder paste on the surface of a part, which comprises a rack, wherein a conveying mechanism is arranged on the rack, a three-axis servo module is erected above the rack, a solder paste spray head is installed on the three-axis servo module, a roll coating mechanism and a solder paste adjusting mechanism are sequentially arranged above the conveying mechanism along the conveying direction, and a solder paste collecting mechanism is arranged below the roll coating mechanism. The utility model has the beneficial effects that: the thickness of the solder paste on the surface of the roll coating roller is adjusted, the uniform distribution of the solder paste on the surface of the roll coating roller is ensured, the surface roll coating of parts with different thicknesses is realized, and the collection of residual solder paste is realized; the solder paste can be prevented from being dried and hardened on the surface of the roll coating roller and cured on the surface of the roll coating roller; the roller coating of a plurality of parts can be carried out simultaneously, so that the roller coating efficiency is improved; the roller coating effect of the parts is ensured, and meanwhile, the parts cannot be crushed or scratched; the height of the roller coating roller is adjustable, the practicability and the applicability of the roller coating device are improved, and the applicability is wide.

Description

Roller coating device for coating soldering paste on surface of part

Technical Field

The utility model relates to the technical field of rolling and coating of soldering paste, in particular to a rolling and coating device for coating soldering paste on the surface of a part.

Background

The solder paste is a homogeneous mixture of alloy solder powder, pasty flux and some additives, and has certain viscosity and good thixotropy. Solder paste is often used in some sheet metal processing operations to impart good corrosion resistance, scratch resistance, etc., to sheet metal, such as coating the surface of sheet metal parts with solder paste. In order to improve the coating efficiency of the solder paste on the surface of the sheet-like part, the coating is performed by means of spraying. However, the existing spraying method easily causes waste of the soldering paste, improves the coating cost of the soldering paste, and simultaneously has uneven coating thickness and poor coating effect. Some roll coating machines are adopted for roll coating sheet parts, but the height of a roll coating roller of the existing roll coating machine cannot be adjusted, a conveying belt below the roll coating roller is inelastic, so that the roll coating effect is poor, the roll coating roller is easy to wear, the service life is short, the roll coating machine is only suitable for coating soldering paste of parts with specified thickness, and the applicability is single.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a roller coating device for coating solder paste on the surface of a part, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a roll coating device for coating solder paste on the surface of a part comprises a rack, wherein a conveying mechanism is arranged on the rack, a three-axis servo module is erected above the rack, a solder paste spray head is installed on the three-axis servo module, a roll coating mechanism and a solder paste adjusting mechanism are sequentially arranged above the conveying mechanism along the conveying direction, and a solder paste collecting mechanism is arranged below the roll coating mechanism;

the conveying mechanism comprises a conveying frame, the conveying frame is fixed on a rack, two ends of the conveying frame in the length direction are respectively provided with a conveying roller, a conveying belt is connected between the two conveying rollers, and one of the two conveying rollers is connected with a conveying motor;

the roll coating mechanism contains the roll coating fixed plate, two the roll coating fixed plate symmetry sets up in carriage width direction's both sides, two the below of roll coating fixed plate all is equipped with a first commutator, two be connected with a first connecting axle between the first commutator, the one end of first connecting axle is equipped with first regulation carousel, two the side of keeping away from the carriage of roll coating fixed plate all is equipped with a ball screw nut pair, two it is vice rather than corresponding the first commutator of below to be connected with first ball screw nut pair, two the vice nut of first ball screw nut all connects with a crane, two the top of crane all is connected with a lifter plate, two the lifter plate is put on the shelf and is equipped with a roll coating roller, the roll coating roller is connected with the roll coating motor.

Further preferably, soldering paste adjustment mechanism contains the mounting panel, two the mounting panel is fixed in respectively on two lifter plates, two it is vice all to be equipped with a second ball screw nut on the mounting panel, two the vice lead screw of second ball screw nut all is connected with a second commutator, two be connected with a second connecting axle between the second commutator, the one end of second connecting axle is equipped with second regulation carousel, two all be connected with a sliding plate on the vice nut of second ball screw nut, two all be equipped with a fixed block on the sliding plate, two be connected with a soldering paste regulating roller between the fixed block, all be connected with an insertion and extraction round pin between soldering paste regulating roller and two fixed blocks.

Preferably, the circumferential surface of the solder paste adjusting roller is provided with a plurality of cutting grooves, and the groove edges of the cutting grooves are straight edges and are parallel to the axial direction of the solder paste adjusting roller.

Further preferably, the soldering paste collecting mechanism comprises a collecting fixing frame, the collecting fixing frame is symmetrically arranged on two sides of the width direction of the conveying frame, the collecting fixing frame is provided with a collecting cylinder which is arranged in the same direction, and the piston rod end of the collecting cylinder is connected with a collecting groove of a rectangular structure.

Further preferably, two opposite side surfaces of the collecting fixing frame are provided with sliding grooves, two ends of the collecting groove are provided with idler wheels, and the idler wheels are arranged in the sliding grooves in a rolling mode.

Further preferably, a scraping plate is arranged on the inner side edge, far away from the collecting cylinder, of the collecting groove, the scraping edge of the scraping plate is a straight edge and is parallel to the axis of the roller coating roller, and the scraping plate is made of rubber materials.

Further preferably, handles are arranged at two ends of the collecting tank in the length direction, clamping grooves are formed in the collecting tank, and piston rods of the collecting cylinders are clamped in the clamping grooves.

Further preferably, a cylindrical supporting roller is arranged in the middle of the conveying frame, the supporting roller is parallel to the conveying roller and located between the annular rings of the conveying belt, the roll coating roller is arranged right above the supporting roller, and elastic rubber is wrapped on the circumferential surface of the supporting roller.

Has the advantages that: according to the roll coating device for coating the soldering paste on the surface of the part, the part is conveyed through the conveying mechanism, the soldering paste is conveyed and discharged through the three-axis servo module and the soldering paste nozzle, the soldering paste is roll coated on the surface of the part through the roll coating mechanism, the thickness of the soldering paste on the surface of the roll coating roller is adjusted through the soldering paste adjusting mechanism, the uniform distribution of the soldering paste on the surface of the roll coating roller is ensured, and the collection of the residual soldering paste on the surface of the roll coating roller is realized through the soldering paste collecting mechanism; the solder paste can be prevented from being dried and hardened on the surface of the roll coating roller and being solidified on the surface of the roll coating roller, so that the subsequent use of the roll coating roller is influenced and the roll coating roller is damaged; the roller coating of a plurality of parts can be carried out simultaneously, so that the roller coating efficiency is improved; the roller coating effect of the parts is ensured, and meanwhile, the parts cannot be crushed or scratched; the height of the roller coating roller is adjustable, so that the surface of parts with different thicknesses is coated with soldering paste, the practicability and the applicability of the roller coating device are improved, the applicability is wide, the abrasion of the roller coating roller is reduced, and the service life of the roller coating roller is prolonged; the roll coating device is ingenious in structural design, flexible in operation, capable of achieving automatic roll coating of the solder paste on the surface of the part and high in working efficiency.

Drawings

FIG. 1 is a schematic diagram of an axial structure of a roll coating apparatus for applying solder paste on a surface of a part according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a roll coating apparatus for applying solder paste on a surface of a part according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a conveying mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a roll coating mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a solder paste adjustment mechanism disclosed in the embodiment of the utility model;

fig. 6 is a schematic structural diagram of a solder paste collection mechanism according to an embodiment of the present invention.

Reference numerals: 1-a machine frame, 2-a conveying mechanism, 21-a conveying frame, 22-a conveying roller, 23-a conveying belt, 24-a conveying motor, 25-a supporting roller, 3-a three-shaft servo module, 4-a solder paste spray head, 5-a roller coating mechanism, 51-a roller coating fixed plate, 52-a first commutator, 53-a first connecting shaft, 54-a first adjusting turntable, 55-a first ball screw nut pair, 56-a lifting frame, 57-a lifting plate, 58-a roller coating roller, 59-a roller coating motor, 6-a solder paste adjusting mechanism, 61-a mounting plate, 62-a second ball screw nut pair, 63-a second commutator, 64-a second connecting shaft, 65-a second adjusting turntable, 66-a sliding plate, 67-a fixed block, 68-solder paste adjusting roller, 681-cutting groove, 69-inserting and pulling pin, 7-solder paste collecting mechanism, 71-collecting fixing frame, 711-sliding groove, 72-collecting cylinder, 73-collecting groove, 731-clamping groove, 74-roller and 75-scraper.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-6, a roll coating device for coating solder paste on the surface of a part comprises a frame 1, wherein a conveying mechanism 2 is arranged on the frame 1, a three-axis servo module 3 is erected above the frame 1, a solder paste nozzle 4 is installed on the three-axis servo module 3, a roll coating mechanism 5 and a solder paste adjusting mechanism 6 are sequentially arranged above the conveying mechanism 2 along the conveying direction, and a solder paste collecting mechanism 7 is arranged below the roll coating mechanism 5;

the conveying mechanism 2 comprises a conveying frame 21, the conveying frame 21 is fixed on the rack 1, two conveying rollers 22 are arranged at two ends of the conveying frame 21 in the length direction, a conveying belt 23 is connected between the two conveying rollers 22, and one of the two conveying rollers 22 is connected with a conveying motor 24;

the roll coating mechanism 5 comprises roll coating fixing plates 51, the two roll coating fixing plates 51 are symmetrically arranged on two sides of the width direction of the conveying frame 21, a first commutator 52 is arranged below the two roll coating fixing plates 51, a first connecting shaft 53 is connected between the two first commutators 52, one end of the first connecting shaft 53 is provided with a first adjusting turntable 54, the side surfaces, far away from the conveying frame 21, of the two roll coating fixing plates 51 are provided with a first ball screw nut pair 55, the two first ball screw nut pairs 55 are respectively connected with the first commutators 52 below the two first ball screw nut pairs 55, the nuts of the two first ball screw nut pairs 55 are connected with a lifting frame 56, the lifting plates 57 are connected above the two lifting frames 56, a roll coating roller 58 is erected on the two lifting plates 57, and the roll coating roller 58 is connected with a roll coating motor 59.

In the application, the roll coating device is used for roll coating of the soldering paste on the surface of a sheet part, wherein the conveying mechanism 2 is used for conveying the part, the three-axis servo module 3 is used for moving the soldering paste nozzle 4 in horizontal and vertical spaces, the soldering paste nozzle 4 is used for conveying and blanking the soldering paste, and the roll coating mechanism 5 is used for roll coating the soldering paste on the surface of the part; the solder paste adjusting mechanism 6 is used for adjusting the thickness of the solder paste on the surface of the roll coating roller 58 of the roll coating mechanism 5, ensuring the uniform distribution of the solder paste on the surface of the roll coating roller 58 and ensuring the roll coating effect of the part; the solder paste collecting mechanism 7 is used for collecting the residual solder paste on the surface of the roll coating roller 58 after the roll coating operation of the part is finished, and preventing the solder paste from being dried and hardened on the surface of the roll coating roller 58 and being solidified on the surface of the roll coating roller 58, thereby influencing the subsequent use of the roll coating roller 58 and damaging the roll coating roller 58.

The middle of the conveying frame 21 is provided with a cylindrical supporting roller 25, the supporting roller 25 is parallel to the conveying roller 22 and is positioned between annular rings of the conveying belt 23, the roller coating roller 58 is arranged right above the supporting roller 25, the circumferential surface of the supporting roller 25 is coated with elastic rubber, when a part is conveyed below the roller coating roller 58 for roller coating, the part is provided with an elastic support, the roller coating effect of the part is ensured, meanwhile, the abrasion of the roller coating roller 58 is reduced, and the service life of the roller coating roller 58 is prolonged; the height of the roll coating roller 58 of the roll coating mechanism 5 is adjustable, the first adjusting turntable 54 is rotated to drive the first connecting shaft 53 to rotate, and then the two first commutators 52 at the two ends of the first connecting shaft 53 are driven to synchronously rotate, and the lead screws of the two first ball screw nut pairs 55 are driven to rotate, the nuts of the first ball screw nut pairs 55 are lifted along with the rotation of the lead screws, and then the lifting frame 56 is driven to move up and down, the lifting frame 56 is driven to lift the lifting plate 57, and the roll coating roller 58 erected on the lifting plate 57 is driven to lift, so that the height of the roll coating roller 58 is adjusted, roll coating of parts with different thicknesses is realized, and the roll coating effect of the parts is ensured.

In the application, the roll coating of the surfaces of the parts is realized through the roll coating roller 58, the roll coating of the soldering paste is uniform, the roll coating of a plurality of parts can be simultaneously carried out, and the roll coating efficiency is improved; by arranging the supporting roller 25, the roller coating effect of the parts is ensured, and meanwhile, the parts are not crushed or scratched; the height of the roller coating roller 58 is adjustable, so that the surface of parts with different thicknesses is coated with soldering paste in a rolling way, the practicability and the applicability of the roller coating device are improved, and the applicability is wide; the thickness of the soldering paste on the surface of the rolling coating roller 58 is adjusted through the soldering paste adjusting mechanism 6, so that the soldering paste on the surface of the rolling coating roller 58 is uniformly distributed, and the surface coating thickness of the part is conveniently adjusted; the roll coating device is ingenious in structural design, flexible in operation, high in working efficiency and capable of achieving automatic roll coating of the surface soldering paste of the part.

In the application, soldering paste adjustment mechanism 6 contains mounting panel 61, two mounting panels 61 are fixed in respectively on two lifter plates 57, all be equipped with the vice 62 of a second ball screw nut on two mounting panels 61, the lead screw of the vice 62 of two second ball screw nuts all is connected with a second commutator 63, be connected with a second connecting axle 64 between two second commutators 63, the one end of second connecting axle 64 is equipped with second adjusting turntable 65, all be connected with a sliding plate 66 on the vice 62 nut of two second ball screw nuts, all be equipped with a fixed block 67 on two sliding plates 66, be connected with a soldering paste regulating roller 68 between two fixed blocks 67, all be connected with an insertion and extraction pin 69 between soldering paste regulating roller 68 and two fixed blocks 67.

In the application, the solder paste adjusting mechanism 6 is used for adjusting the thickness of the solder paste on the surface of the roll coating roller 58 of the roll coating mechanism 5 and ensuring that the solder paste on the surface of the roll coating roller 58 is uniformly distributed, and by rotating the second adjusting turntable 65, the second connecting shaft 64 is driven to rotate, the second commutators 63 at two ends of the second connecting shaft 64 are driven to rotate, the lead screw of the second ball screw nut pair 62 is driven to rotate by the second commutators 63, so that the sliding plate 66 connected with the nut of the second ball screw nut pair 62 is driven to horizontally move left and right, the fixed block 67 on the sliding plate 66 is driven to horizontally move left and right, the solder paste adjusting roller 68 connected with the fixed block 68 is close to or far away from the roll coating roller 58, the adjustment of the gap between the solder paste adjusting roller 68 and the roll coating roller 58 is realized, and the adjustment of the thickness of the solder paste on the surface of the roll coating roller 58 is further realized; the insertion and extraction pins 69 achieve fixation of the solder paste regulating roller 68, preventing the solder paste regulating roller 68 from rotating with the rotation of the roll coating roller 58.

In this application, the circumferential surface of the solder paste leveling roller 68 is provided with a plurality of cutting grooves 681, and the groove sides of the cutting grooves 681 are straight and parallel to the axial direction of the solder paste leveling roller 68. In the present application, there are two cutting grooves 681 on the solder paste adjustment roller 68, the two cutting grooves 681 are symmetrical with the central axis of the solder paste adjustment roller 68, and when the groove edge of the cutting groove 681 close to the roll-coating roller 58 is worn, the other cutting groove 681 is used after being rotated 180 degrees; the cutting groove 681 is not limited to one, and is convenient to process and manufacture, and the straight processing of the groove edge of the cutting groove 681 is easy, so that the uniformity of the solder paste on the surface of the roll-coating roller 58 can be ensured when the roll-coating roller is in operation; the solder paste regulating roller 68 is in line contact with the solder paste on the surface of the rotating roll coating roller 58, and when the solder paste regulating roller 68 is worn by the solder paste, only the groove edge of the cutting groove 681 is worn, so that large-area wear is avoided, and the service life of the solder paste regulating roller 68 is prolonged.

In this application, solder paste collection mechanism 7 contains collects mount 71, and two collect mount 71 symmetries set up in the width direction's of carriage 21 both sides, and two one ends of collecting mount 71 all are equipped with the collection cylinder 72 that a syntropy set up, and the tailpiece of the piston rod of two collection cylinders 72 is connected with the collecting vat 73 of a rectangle structure.

In this application, after the solder paste collection mechanism 7 is used for the roll-coating operation, collect the solder paste on the surface of the roll-coating roller 58, drive the collecting vat 73 through the collection cylinder 72 and move horizontally from left to right, when the roll-coating operation is going on, the collection cylinder 72 drives the collecting vat 73 to keep away from the below of the roll-coating roller 58, and after the roll-coating operation is completed, the collection cylinder 72 drives the collecting vat 73 to move to the below of the roll-coating roller 58, and the solder paste on the roll-coating roller 58 starts to be collected.

In this application, two opposite sides of collecting the mount 71 all are equipped with spout 711, and the both ends of collecting vat 73 all are equipped with a gyro wheel 74, and gyro wheel 74 rolls and sets up in spout 711. Through the arrangement of the sliding groove 711 and the idler wheels 74, the left and right horizontal movement of the collecting groove 73 is facilitated, the moving direction of the collecting groove 73 is accurate, and the moving is labor-saving.

In this application, the collection groove 73 is kept away from the inboard side of collecting cylinder 72 and is equipped with scraper blade 75, and scraper blade 75 scrapes the limit and be the straight flange and parallel with the axis of roller coating roller 58, and scraper blade 75 adopts the rubber material to make. By arranging the scraper 75, the solder paste on the surface of the roller coating roller 58 is ensured to be collected cleanly, and meanwhile, the scraper 75 made of rubber cannot scratch the surface of the roller coating roller 58; the scraper 75 is fixed to the collecting groove 73 by screws, which facilitates installation or replacement of the scraper 75.

In the application, handles are arranged at two ends of the collecting groove 73 in the length direction, so that the collecting groove 73 can be conveniently carried; the collecting groove 73 is provided with a clamping groove 731, a piston rod of the collecting cylinder 72 is clamped in the clamping groove 731, the collecting groove 73 is connected with the collecting cylinder 72 conveniently, and the connection is simple and convenient.

The roll coating device of the application has the working principle that:

1) the roll coating mechanism 5 acts through controlling the button starting device, and the roll coating motor 59 drives the roll coating roller 58 to rotate;

2) the solder paste collecting mechanism 7 is actuated, and the collecting cylinder 72 drives the collecting tank 73 to move to the lower part of the roller coating roller 58;

3) the triaxial servo module 3 acts to drive the solder paste nozzle 4 to move between the roller coating roller 58 and the solder paste adjusting roller 68, and the solder paste nozzle 4 starts to discharge materials;

4) the solder paste adjusting mechanism 6 acts, the second adjusting turntable 65 is manually rotated, the solder paste adjusting roller 68 is driven to move left and right through the second connecting shaft 64, the second reverser 63 and the second ball screw nut pair 62, the distance between the solder paste adjusting roller 68 and the roll-coating roller 58 is adjusted, and the thickness of the solder paste on the surface of the roll-coating roller 58 is adjusted;

5) the solder paste collection mechanism 7 is actuated, and the collection cylinder 72 drives the collection groove 73 to be far away from the roller coating roller 58;

6) placing the parts on a conveying belt 23 of the conveying mechanism 2, and driving the parts to move through the conveying belt 23 for roll coating;

7) manually rotating a first adjusting turntable 54 of the roll coating mechanism 5, adjusting the heights of a roll coating roller 58 and a solder paste adjusting roller 68 through a first connecting shaft 53, a first commutator 52, a first ball screw nut pair 55, a lifting frame 56 and a lifting plate 57, and realizing the adjustment of the roll coating effect of the parts;

8) after the roll coating operation is completed, the solder paste collection mechanism 7 is operated, the collection cylinder 72 drives the collection tank 73 to move to the position below the roll coating roller 58, the scraper 75 scrapes the surface of the roll coating roller 58, the solder paste on the surface of the roll coating roller 58 is collected, and the surface coating operation of the sheet-shaped part is completed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the contents of the present invention within the scope of the protection of the present invention.

Claims

1. The utility model provides a roll coating device for part surface coating soldering paste, includes frame (1), be equipped with conveying mechanism (2) on frame (1), its characterized in that: a three-axis servo module (3) is erected above the rack (1), a soldering paste spray head (4) is installed on the three-axis servo module (3), a roll coating mechanism (5) and a soldering paste adjusting mechanism (6) are sequentially arranged above the conveying mechanism (2) along the conveying direction, and a soldering paste collecting mechanism (7) is arranged below the roll coating mechanism (5);

the conveying mechanism (2) comprises a conveying frame (21), the conveying frame (21) is fixed on the rack (1), two conveying rollers (22) are arranged at two ends of the conveying frame (21) in the length direction, a conveying belt (23) is connected between the two conveying rollers (22), and one of the two conveying rollers (22) is connected with a conveying motor (24);

the roll coating mechanism (5) comprises roll coating fixing plates (51), the two roll coating fixing plates (51) are symmetrically arranged on two sides of a conveying frame (21) in the width direction, a first commutator (52) is arranged below each of the two roll coating fixing plates (51), a first connecting shaft (53) is connected between the two first commutators (52), one end of the first connecting shaft (53) is provided with a first adjusting turntable (54), the side faces, far away from the conveying frame (21), of the two roll coating fixing plates (51) are respectively provided with a first ball screw nut pair (55), the two first ball screw nut pairs (55) are respectively connected with the first commutators (52) below the first ball screw nut pairs, nuts of the two first ball screw nut pairs (55) are respectively connected with a lifting frame (56), and a lifting plate (57) is connected above each of the two lifting frames (56), a rolling coating roller (58) is erected on the two lifting plates (57), and the rolling coating roller (58) is connected with a rolling coating motor (59).

2. A roll coating apparatus for a surface coating of a solder paste on a part according to claim 1, wherein: the soldering paste adjusting mechanism (6) comprises mounting plates (61), the two mounting plates (61) are respectively fixed on the two lifting plates (57), a second ball screw nut pair (62) is arranged on each of the two mounting plates (61), the screw rods of the two second ball screw nut pairs (62) are connected with a second commutator (63), a second connecting shaft (64) is connected between the two second commutators (63), one end of the second connecting shaft (64) is provided with a second adjusting turntable (65), nuts of the two second ball screw nut pairs (62) are respectively connected with a sliding plate (66), two sliding plates (66) are respectively provided with a fixed block (67), a solder paste adjusting roller (68) is connected between the two fixed blocks (67), an inserting and pulling pin (69) is connected between the solder paste adjusting roller (68) and the two fixing blocks (67).

3. A roll coating apparatus for a surface coating of a solder paste on a part according to claim 2, wherein: the circumferential surface of the soldering paste adjusting roller (68) is provided with a plurality of cutting grooves (681), and the groove sides of the cutting grooves (681) are straight sides and are parallel to the axial direction of the soldering paste adjusting roller (68).

4. A roll coating apparatus for a surface coating of a solder paste on a part according to claim 1, wherein: mechanism (7) are collected to solder paste contains collects mount (71), two collect mount (71) symmetry and set up in the width direction's of carriage (21) both sides, two the one end of collecting mount (71) all is equipped with collection cylinder (72) that a syntropy set up, two the tailpiece of the piston rod of collecting cylinder (72) is connected with collecting vat (73) of a rectangle structure.

5. A roll coating apparatus for a surface coating of a solder paste on a part according to claim 4, wherein: the opposite side surfaces of the two collecting fixing frames (71) are provided with sliding grooves (711), two ends of the collecting groove (73) are provided with a roller (74), and the rollers (74) are arranged in the sliding grooves (711) in a rolling mode.

6. A roll coating apparatus for a surface coating of a solder paste on a part according to claim 4, wherein: and a scraper plate (75) is arranged on the inner side edge of the collecting groove (73) far away from the collecting cylinder (72), the scraping edge of the scraper plate (75) is a straight edge and is parallel to the axis of the roller coating roller (58), and the scraper plate (75) is made of rubber.

7. A roll coating apparatus for a surface coating of a solder paste on a part according to claim 4, wherein: handles are arranged at two ends of the collecting groove (73) in the length direction, a clamping groove (731) is formed in the collecting groove (73), and a piston rod of the collecting cylinder (72) is clamped in the clamping groove (731).

8. A roll coating apparatus for a surface coating of a solder paste on a part according to claim 1, wherein: the middle of the conveying frame (21) is provided with a cylindrical supporting roller (25), the supporting roller (25) is parallel to the conveying roller (22) and is positioned between the annular rings of the conveying belt (23), the roller coating roller (58) is arranged right above the supporting roller (25), and the circumferential surface of the supporting roller (25) is coated with elastic rubber.