CN201647192U

CN201647192U - Automatic solder paste supplying device

Info

Publication number: CN201647192U
Application number: CN201020135498XU
Authority: CN
Inventors: 李青; 王亮
Original assignee: TIANJIN QUNCHUANG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN QUNCHUANG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2010-03-19
Filing date: 2010-03-19
Publication date: 2010-11-24
Anticipated expiration: 2020-03-19

Abstract

The utility model relates to an automatic solder paste supplying device mounted on a solder paste printing machine. The motor of the device drives a lead screw shaft to rotate through belt transmission, the nut on the lead screw shaft drives an active plate to move up and down along the lead screw shaft and a pillar, the piston fixed on the active plate extrudes the solder paste from the bottom up in a solder paste tank with a downward inverted tank opening, the solder paste drops on the silk screen of the printing machine from the small holes formed at the top of the piston, and all the operations are performed automatically according to the setting procedures. The utility model has the advantage that the solder paste is exposed in air for a short time, thereby reducing the possibility of quality deterioration of the solder paste due to the oxidation; and the utility model further has the advantages of manpower conservation, simple structure, convenient operation, maintenance and replacement of the solder paste tanks, and low cost, and improves working efficiency.

Description

Automatic feeding device for solder paste

Technical field

The utility model relates to a kind of tin cream feedway, particularly relates to a kind of solder paste can and is inverted the automatic feeding device for solder paste that pushes tin cream from bottom to top.

Background technology

As everyone knows, at present, solve the problem that adds tin cream at circuit card paster production industry following several method is arranged, the one, pure manual operation, to on the silk screen of stencil printer, add tin cream, the workman opens solder paste can, uses the tin cream stirring blade of a special use then, in solder paste can tin cream is shoveled on the silk screen.Because tin cream is a kind of more sticky paste metal object, so after perching knife had shoveled, the workman also will spend long time that the tin cream that is bonded on the perching knife is cleaned out.When soon the tin cream in the solder paste can having been shoveled, also to scrape the tin cream on the solder paste can totally with the tin cream stirring blade, therefore time-consuming and efficient is low; The 2nd, install additional and add the tin cream device automatically, normally jar outside thread mouth is screwed on the device adapter plate up, and in the jar bottom opening, piston promptly pushes tin cream from top to bottom from the jar mouth at the bottom of jar, tin cream by jar at the bottom of aperture be pressed against on the silk screen of stencil printer.Like this, must increase the special perforate mechanism of a cover adding automatically on the tin cream device, be the jar end perforate of each solder paste can, thereby improved cost, complex structure also can allow the residual jar plastics dust of perforate fall in the tin cream on silk screen, influences the quality of tin cream.

Summary of the invention

Main purpose of the present utility model is to overcome above deficiency, and provides a kind of solder paste can be inverted the automatic feeding device for solder paste that pushes tin cream from bottom to top.

The technical scheme that its technical matters that solves the utility model adopts is: it comprises Power train, squeezes the tin cream actuating unit, it is characterized in that:

1.. Power train: it comprises motor, belt pulley, belt pulley, A adapter plate, lead screw shaft, A sleeve, bearing, nut and portable plate, the Motor Shaft tight pulley, its motor is fixed by bolts on the A adapter plate, belt pulley is fixed on an end of lead screw shaft, the A sleeve is fixed with bolt and A adapter plate, A sleeve internal fixation has bearing, and lead screw shaft cap nut, nut are fixed on an end of portable plate;

2.. squeeze the tin cream actuating unit: it comprises solder paste can, piston, the B adapter plate, the B sleeve, the rubber piston head, two root posts and C sleeve, the jar of its a solder paste can mouthful place has outside thread, solder paste can jar mouth down is inverted to be screwed on the negative thread of B sleeve, the outer of B sleeve is connected with screw with the B adapter plate, the top of piston has the rubber piston head, the center has aperture, piston base is screwed on portable plate, piston is along with the portable plate extruding tin cream that moves from bottom to top, the other end of B adapter plate is fixed with two root posts respectively, the column outside is with the C sleeve, have boss on the C sleeve, the boss of C sleeve is fixed by screw and portable plate, and control box is fixed on the after poppet that squeezes the tin cream actuating unit, be fixed with framework below B adapter plate one side, be fixed with two limit switches up and down on the framework;

3.. stock stop: it comprises rotary cylinder, rotating shaft, striker plate and two fixed mounts, its cylinder is fixed on the side of portable plate by cylinder block, rotating shaft is supported in two fixed mounts, and fixed mount is screwed below portable plate, and striker plate is fixed in the rotating shaft.

Advantage and the good effect that the utlity model has are: the degree of automation height, and action is accurate, and high efficiency is simple in structure, is convenient to Operation and maintenance, and it is convenient to change solder paste can, and cost is low.

Description of drawings

Fig. 1 is an integral structure scheme drawing of the present utility model;

Fig. 2 is solder paste can, B sleeve and piston connection structure scheme drawing.

Among Fig. 1-Fig. 2: 1. motor, 2. belt pulley, 3. belt pulley, the 4.A adapter plate,

5. lead screw shaft, the 6.A sleeve, 7. bearing, 8. nut, 9. portable plate, 10. solder paste can,

11. piston, the 12.B adapter plate, the 13.B sleeve, 14. rubber piston heads, 15. columns,

16.C sleeve, 17. control boxs, 18. frameworks, 19. limit switches, 20. rotary cylinders,

21. rotating shaft, 22. striker plates, 23. fixed mounts.

The specific embodiment

For further understanding summary of the invention characteristics of the present utility model and effect following examples for example now, and conjunction with figs. is described in detail as follows, and sees also Fig. 1-Fig. 2.

As shown in Figure 1 and Figure 2: it comprises the utility model Power train, squeezes tin cream actuating unit and stock stop:

1.. Power train: it comprises motor 1, belt pulley 2, belt pulley 3, A adapter plate 4, lead screw shaft 5, A sleeve 6, bearing 7, nut 8 and portable plate 9, motor 1 shaft tight pulley 2, its motor 1 is screwed on A adapter plate 4, belt pulley 3 is fixed on an end of lead screw shaft 5, A sleeve 6 usefulness screws and A adapter plate 4 are fixing, A sleeve 6 internal fixation have bearing 7, it plays the effect of supporting and reducing resistance, lead screw shaft 5 outsides are with nut 8, nut 8 is fixed on an end of portable plate 9, resistance is littler and adopt the ballscrew shaft 5 of outsourcing in order to move, ballscrew shaft 5 rotates under the drive of motor and transmission device, make nut 8 and portable plate 9 upward movement together, meanwhile, piston 11 upwards pushes the tin cream in the solder paste can 10;

2.. squeeze the tin cream actuating unit: it comprises solder paste can 10, piston 11, B adapter plate 12, B sleeve 13, rubber piston head 14, two root posts 15 and C sleeve 16, the jar of its solder paste can 10 a mouthful place has outside thread, 10 jars of mouth downs of solder paste can are inverted to be screwed on the negative thread of B sleeve 13, B sleeve 13 is connected with B adapter plate 12 usefulness screws, the top of piston 11 has rubber piston head 14, the center has aperture, piston 11 bottoms are screwed on portable plate 9, below the tin cream that piston 11 is extruded during along with nut 8 upward movements drops to from the aperture of piston 11 on the silk screen of printer, the other end of B adapter plate 12 is fixing with two root posts 15 respectively, column 15 outsides are with C sleeve 16, have boss on the C sleeve 16, the boss of C sleeve 16 is fixing by screw and portable plate 9, control box 17 is fixed on the after poppet that squeezes the tin cream actuating unit, be fixed with framework 18 below B adapter plate 12 1 sides, be fixed with two limit switches 19 up and down on the framework 18, come the end position of restraint plate about in the of 9 with limit switch 19, portable plate 9 moves up and down along lead screw shaft 5 and column 15, column 15 has guaranteed that the direction skew does not take place crowded tin cream actuating unit in the process of motion, and the crowded tin cream actuating unit travel direction of assurance is vertical with solder paste can jar mouth plane, because of the size of solder paste can 10 different when needs are changed, solder paste can 10 and B sleeve 13 need only be changed and get final product, the diameter of but internal thread hole constant because of the external diameter of B sleeve 13 is with the outside dimension variation of solder paste can 10;

3.. stock stop: it comprises rotary cylinder 20, rotating shaft 21, striker plate 22 and two fixed mounts 23, its cylinder 20 is fixed on the side of portable plate 9 by cylinder block 24, rotating shaft 21 is supported in two fixed mounts 23, fixed mount 23 is screwed below portable plate 9, striker plate 22 is fixed in the rotating shaft 21, and striker plate 22 rotates with rotating shaft 21 according to instruction and blocks on the silk screen that tin cream residual on the feed opening of piston 11 drops to printer.

During operation, at first, the automatic feeding device for solder paste integral installation on stencil printer.Simultaneously, the working state signal of stencil printer is passed in the controller of automatic feeding device for solder paste by the sensor in the control box 17, the controller of automatic feeding device for solder paste can come the startup of control step motor and stop according to the signal that the outside provides, simultaneously, the time of control startup and the speed of operation.When controller receive begin to squeeze the order of tin cream after, controller starts stepping motor, by moving screw axis 5 rotations of belt driving band, screw axis 5 drives nut 8 and moves up and down when rotating, thereby driving portable plate 9 upwards moves down together with piston 11, reach piston 11 knee-action in solder paste can 10, controller is controlled extruding of tin cream and is stopped.After controller setting stencil printer prints 100 circuit cards, automatic feeding device for solder paste will be extruded tin cream one time, the tin cream amount of whenever squeezing once is 1/5 of a whole jar of tin cream, again after printer has printed 400 circuit cards, automatic feeding device for solder paste will squeeze 1/5 remaining tin cream of solder paste can, when having squeezed, the machine alarm prompting should be changed solder paste can.After having squeezed tin cream at every turn, tin cream striker plate 22 can be by lifting the feed opening that striker plate 22 blocks piston 11 delay time that controller is set, in case stay residual tin cream on piston 11 feed openings, because when the stencil printer scraper moves, residual tin cream may fall on silk screen, when just moving to the screen opening top, the stencil printer scraper falls down tin cream, and do not have circuit card below the silk screen this moment, tin cream will flow to by the perforate of silk screen on the support of circuit card, thereby influence the cleaning of printer, the time has been grown the precision that will influence printer.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. automatic feeding device for solder paste, it comprises Power train, squeezes the tin cream actuating unit, it is characterized in that:

1.. Power train: it comprises motor (1), belt pulley (2), belt pulley (3), A adapter plate (4), lead screw shaft (5), A sleeve (6), bearing (7), nut (8) and portable plate (9), motor (1) shaft tight pulley (2), its motor (1) is fixed by bolts on the A adapter plate (4), belt pulley (3) is fixed on an end of lead screw shaft (5), A sleeve (6) is fixing with bolt and A adapter plate (4), A sleeve (6) internal fixation has bearing (7), lead screw shaft (5) cap nut (8), nut (8) is screwed the end at portable plate (9);

2.. squeeze the tin cream actuating unit: it comprises solder paste can (10), piston (11), B adapter plate (12), B sleeve (13), rubber piston head (14), two root posts (15) and C sleeve (16), the jar of its solder paste can (a 10) mouthful place has outside thread, solder paste can jar mouth down is inverted to be screwed on the negative thread of B sleeve (13), the outer of B sleeve (13) is connected with screw with B adapter plate (12), the top of piston (11) has rubber piston head (14), the center has aperture, piston (11) bottom is screwed on portable plate (9), piston (11) pushes tin cream along with portable plate (9) moves from bottom to top, the other end of B adapter plate (12) is fixing with two root posts (15) respectively, column (15) outside is with C sleeve (16), the C sleeve has boss on (16), the boss of C sleeve (16) is fixing by screw and portable plate (9), control box (17) is fixed on the after poppet that squeezes the tin cream actuating unit, be fixed with framework (18) below B adapter plate (12) one sides, be fixed with two limit switches (19) up and down on the framework (18);

3.. stock stop: it comprises rotary cylinder (20), rotating shaft (21), striker plate (22) and two fixed mounts (23), its cylinder (20) is fixed on the side of portable plate (9) by cylinder block (24), rotating shaft (21) is supported in two fixed mounts (23), fixed mount (23) is screwed below portable plate (9), and striker plate (22) is fixed in the rotating shaft (21).