CN220742503U - Cleaning structure of solder paste printer - Google Patents

Abstract

The utility model relates to a cleaning structure of a solder paste printer, which is applied to a full-automatic solder paste printer of SMT (surface mounted technology) chip mounting equipment. The structure comprises a frame, and further comprises a paper conveying and cleaning mechanism, a leaching mechanism, a cleaning pressing mechanism and a paper conveying and recycling and cleaning mechanism which are sequentially arranged on the frame according to a paper conveying track. The product adopts a spraying mode to humidify the cleaning paper, and the automatic operation timely cleans the solder paste.

Description

Cleaning structure of solder paste printer

Technical Field

The utility model relates to a cleaning structure of a solder paste printer, which is applied to a full-automatic solder paste printer of SMT (surface mounted technology) chip mounting equipment.

Background

The solder paste is a paste substance, is placed on the steel mesh, and is printed on the PCB board by extrusion, in the process, more or less residual solder paste is left on the back of the steel mesh, and the more the number of silk-screen printing times is, the more the amount of solder paste left on the back of the steel mesh is.

If the solder paste on the steel mesh is not cleaned in time, a series of problems such as bridging, printing blurring and the like can occur when the solder paste is printed, and the circuit board is damaged or even scrapped due to the problems.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a cleaning structure of a solder paste printer, which is ingenious in design, and the cleaning paper is humidified by adopting a spray alcohol mode, so that the solder paste is cleaned in time by automatic operation.

(II) technical scheme

The cleaning structure of the solder paste printer comprises a frame, and further comprises a paper conveying and cleaning mechanism, a leaching mechanism, a cleaning pressing mechanism and a paper conveying and recycling and cleaning mechanism which are sequentially arranged on the frame according to a cleaning paper conveying track.

Preferably, the paper length calculating mechanism is arranged between the recovery cleaning paper mechanism and the cleaning pressing mechanism.

Preferably, the recycling and cleaning paper mechanism comprises a recycling motor, the recycling motor is connected with a recycling rod through a coupler, and cleaning paper is sleeved on the recycling rod.

Preferably, the two ends of the recovery stick are respectively provided with a recovery bearing, and the recovery bearings are arranged on the frame.

Preferably, the paper length calculating mechanism comprises a paper length calculating roller, a calculating induction piece is arranged at one end of the paper length calculating roller, a sensor is arranged on the frame, the paper length calculating roller rotates to drive the calculating induction piece to rotate, and the calculating induction piece passes through the sensor to perform cutting light signal actions.

Preferably, the paper length calculating roller has a calculating bearing at each end, and the calculating bearings are mounted on the frame.

Preferably, the cleaning and compacting mechanism comprises a cleaning pipe, hinge plates are arranged on two sides of the cleaning pipe, the hinge plates are arranged on a cleaning cylinder, and the cleaning cylinder is arranged on the frame; a wiping plate is arranged above the cleaning pipe, and a positive pressure interface and a negative pressure interface are arranged below the cleaning pipe; the positive pressure interface and the negative pressure interface are connected to the wiper plate.

Preferably, the dipping mechanism comprises a dipping groove, a dipping shaft and a paper pressing shaft are arranged in the dipping groove, a gear and a dipping motor are arranged at one end of the dipping shaft, and the dipping motor rotates to drive the dipping shaft to rotate through the gear.

Preferably, the paper conveying and cleaning mechanism comprises conveying rollers, two ends of each conveying roller are respectively provided with a conveying bearing, the conveying bearings are rotatably arranged on the frame, and cleaning paper is sleeved on the conveying rollers.

Preferably, the two sides of the frame are provided with sliding blocks, and the frame is also provided with a paper changing sensor.

(III) beneficial effects

Compared with the prior art, the product has the following advantages:

1. the cleaning effect is good, and the cleaning structure of the product adopts a spray alcohol mode to humidify cleaning paper, so that the effect of softening and dissolving solder paste is achieved, the effect is doubled when the cleaning is performed, and the production efficiency and quality of the printing machine are ensured.

2. The degree of automation is high, and the cleaning structure of this product adopts automatic operation, and equipment can automatic operation, has improved cleaning efficiency and production efficiency greatly.

3. The cleaning paper of the product is a standard component, is easy to purchase in the market, and can be exchanged with different brands.

4. The cleaning structure of the product can be used as an accessory of the solder paste printer, and can be added or not added, so that the working state of the solder paste printer is not affected.

Drawings

FIG. 1 is a front view of the present product;

FIG. 2 is a cross-sectional view of A-A of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a perspective view of FIG. 1;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is a schematic view of the structure of the paper recovery and cleaning mechanism (1) in FIG. 5;

FIG. 7 is a schematic view showing the structure of the sheet length calculating mechanism (2) in FIG. 5;

FIG. 8 is a schematic view of the structure of the cleaning and pressing mechanism (3) in FIG. 5;

FIG. 9 is a schematic view of the dipping mechanism (4) of FIG. 5;

FIG. 10 is a schematic view of the structure of the paper feeding and cleaning mechanism (5) in FIG. 5;

FIG. 11 is a schematic view of the structure of the frame (6) in FIG. 5;

FIG. 12 is a schematic view of the present product mounting cleaning paper;

FIG. 13 is a dynamic working schematic diagram of the present product;

fig. 14 is a schematic view of the present product mounted on a fully automatic solder paste printer.

Description of the reference numerals:

retrieve wash paper mechanism (1), retrieve motor (11), shaft coupling (12), retrieve bearing (13), wash paper (14), retrieve rod (15), paper length calculation mechanism (2), calculate bearing (21), paper length calculation roller (22), calculate response piece (23), sensor (24), wash hold-down mechanism (3), wash pipe (31), wash cylinder (32), hinge plate (33), wipe board (34), positive pressure interface (35), negative pressure interface (36), soak and drench mechanism (4), soak and drench groove (41), support (42), soak and drench axle (43), press paper axle (44), gear (45), soak and drench motor (46), carry wash paper mechanism (5), conveying bearing (51), conveying roller (52), frame (6), retrieve hole (61), calculate screw hole (621), wash hole (63), soak and drench hole (64), screw hole (641), conveying hole (65), slider (66), paper change inductor (67), wash structure (a).

Detailed Description

The present utility model will be described in further detail below with reference to the drawings, wherein like elements are designated by like reference numerals, and it is noted that the words "front", "rear", "left", "right", "upper" and "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular element.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The design concept is as follows: through the linkage of a plurality of mechanisms, the cleaning of the solder paste on the steel mesh is realized.

Examples: as shown in fig. 1 to 14, the present embodiment provides a cleaning structure (a) of a solder paste printer, which mainly includes a recovery cleaning paper mechanism (1), a paper length calculating mechanism (2), a cleaning pressing mechanism (3), a showering mechanism (4), a conveying cleaning paper mechanism (5) and a frame (6), wherein:

the recovery motor (11) in the recovery cleaning paper mechanism (1) is connected with the recovery stick (15) through the coupler (12), two ends of the recovery stick (15) are respectively provided with a recovery bearing (13), and the recovery bearings (13) are arranged in the recovery holes (61) on the frame (6). A roll of cleaning paper (14) is sleeved on the recovery rod (15), and when the recovery motor (11) is electrified to rotate, the recovery rod (15) is driven to rotate on the frame (6) to recover the cleaning paper (14).

The paper length calculating roller (22) of the paper length calculating mechanism (2) is provided with a calculating bearing (21) at each end, and the calculating bearings (21) are arranged in calculating holes (62) on the frame (6). One end of the paper length calculating roller (22) is provided with a calculating induction piece (23), the calculating induction piece (23) is in a circular saw-tooth shape, and the paper length calculating roller (22) rotates to drive the calculating induction piece (23) to rotate. The sensor (24) is arranged on a calculating screw hole (621) on the frame (6) through a screw; the calculating sensing piece (23) just passes through the sensor (24) and can perform the action of cutting the optical signal.

Hinge plates (33) are arranged on two sides of a cleaning pipe (31) of the cleaning and compacting mechanism (3), and the hinge plates (33) are arranged on a cleaning cylinder (32). A wiping plate (34) is arranged above the cleaning pipe (31), and a positive pressure interface (35) and a negative pressure interface (36) are arranged below the cleaning pipe (31). The positive pressure interface (35) and the negative pressure interface (36) are connected to the wiping plate (34), and positive air pressure or negative air pressure can be sprayed on the wiping plate (34). The cleaning cylinder (32) can drive the wiping plate (34) to move up and down. The cleaning cylinder (32) is arranged on the cleaning hole (63) on the frame (6) through screws

Two ends of a leaching groove (41) of the leaching mechanism (4) are provided with supports (42), a leaching shaft (43) and a paper pressing shaft (44) are arranged in the supports, and one side of the supports is provided with 3 leaching liquid interfaces (47). One end of the leaching shaft (43) is provided with a gear (45). The leaching groove (41) is arranged on a leaching hole (64) on the frame (6) through screws. The dipping motor (46) is arranged on a screw hole (641) on the frame (6) through a screw. The leaching motor (46) rotates, and the leaching shaft (43) is driven to rotate through the gear (45).

Two ends of a conveying roller (52) of the conveying and cleaning paper mechanism (5) are respectively provided with a conveying bearing (51), and the conveying bearings (51) are arranged in conveying holes (65) on the frame (6); a roll of cleaning paper (14) is wrapped over the transport roller (52). The paper conveying and cleaning mechanism (5) is a driven device and has no power.

As shown in fig. 12 and 13, the cleaning paper (14) of the present embodiment is installed and operated in the following manner: firstly, the unused cleaning paper (14) is sleeved on a conveying roller (52), a section of the cleaning paper (14) is extracted, passes through a gap between a leaching shaft (43) and a paper pressing shaft (44), passes through the upper part of a wiping plate (34), passes through the lower part of a paper length calculating roller (22), and is wound on a recovery roller (15) upwards. The recovery motor (11) drives the recovery stick (15) to rotate, so that the cleaning paper (14) is pulled to move from the conveying roller (52) to the recovery stick (15).

As shown in fig. 14, a slide block (66) is arranged on two sides of the frame (6), and the slide block (66) is arranged on the full-automatic solder paste printer. A paper changing sensor (67) is arranged on the frame (6) and can monitor whether the cleaning paper (14) is used up.

The working principle of the product is as follows:

this product supplies full-automatic tin cream printing machine of SMT paster equipment to wash structure, will wipe board (34) jack-up through wasing cylinder (32), lets washpaper (14) closely paste tightly with the steel mesh, and washing structure slides on the guide rail of equipment, and recovery motor (11) rotate and drive washpaper (14) motion, accomplishes the washing of steel mesh, has realized intermittent type nature self-cleaning steel mesh, guarantees that the steel mesh is clean, ensures printing quality.

The cleaning mechanism of this product is located SMT paster equipment's steel mesh below, when not needing to wash, is located one side of steel mesh, removes to under the steel mesh when needing to wash, avoids influencing the tin cream printing. The full-automatic solder paste printer is provided with a transmission mechanism to drive the cleaning structure to wipe back and forth under the steel mesh.

When cleaning is needed, the cleaning structure moves to the lower part of the steel mesh, the cleaning cylinder (32) is ventilated, and the slurry wiping plate (34) is lifted up to tightly attach the cleaning paper (14) to the steel mesh.

The common leaching solution of the product is alcohol, the leaching solution is sprayed into the leaching tank (41) through the leaching solution interface (47), the leaching solution wets the leaching shaft (43), the leaching motor (46) drives the wetted leaching shaft (43) to rotate, and the leaching solution is smeared on the cleaning paper (14). The cleaning paper (14) is tightly adhered to the steel mesh by the wiping plate (34), the unused cleaning paper (14) is conveyed to wipe the steel mesh under the pulling of the recovery stick (15), and the recovery stick (15) recovers the used cleaning paper (14). The full-automatic solder paste printer is provided with a transmission mechanism to drive the cleaning structure to wipe back and forth under the steel mesh.

The first wiping is a wet wiping, i.e. a cleaning paper (14) coated with a shower of liquid, is wiped on a steel mesh while the wiper plate (34) generates negative air pressure to suck dirt into the recovery device.

The second wiping is dry wiping, the cleaning paper (14) without leaching liquid is wiped on the steel mesh, and meanwhile the wiping plate (34) blows positive air pressure to dry the leaching liquid at the bottom of the steel mesh so as not to influence the printing effect of the PCB.

The paper length calculating roller (22) and the cleaning paper (14) are in static friction, the cleaning paper recovering and cleaning mechanism (1) drives the cleaning paper (14) to move, and the moving length can be converted into the number of turns of the paper length calculating roller (22). The moving length of the paper is calculated by counting the number of times the sensor (24) is cut by the sensing sheet (23).

The above steps are repeated until the cleaning paper (14) is used up, and the paper changing sensor (67) transmits a signal to the upper computer to prompt the operator to change the cleaning paper.

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

Claims (10)

1. The utility model provides a cleaning structure of solder paste printing machine, includes frame (6), its characterized in that: the device also comprises a paper conveying and cleaning mechanism (5), a leaching mechanism (4), a cleaning pressing mechanism (3) and a paper conveying and recycling and cleaning mechanism (1) which are sequentially arranged on the frame (6) according to the conveying track of the cleaning paper (14).

2. The cleaning structure of a solder paste printer according to claim 1, wherein: the paper length calculating mechanism (2) is arranged between the recovery cleaning paper mechanism (1) and the cleaning pressing mechanism (3).

3. The cleaning structure of a solder paste printer according to claim 1, wherein: the recycling and cleaning paper mechanism (1) comprises a recycling motor (11), the recycling motor (11) is connected with a recycling rod (15) through a coupler (12), and cleaning paper (14) is sleeved on the recycling rod (15).

4. A cleaning structure of a solder paste printer according to claim 3, wherein: the two ends of the recovery stick (15) are respectively provided with a recovery bearing (13), and the recovery bearings (13) are arranged on the frame (6).

5. The cleaning structure of a solder paste printer according to claim 2, wherein: the paper length calculating mechanism (2) comprises a paper length calculating roller (22), a calculating induction piece (23) is arranged at one end of the paper length calculating roller (22), a sensor (24) is arranged on the frame (6), the paper length calculating roller (22) rotates to drive the calculating induction piece (23) to rotate, and the calculating induction piece (23) passes through the sensor (24) to perform cutting light signal actions.

6. The cleaning structure of a solder paste printer according to claim 5, wherein: two ends of the paper length calculating roller (22) are respectively provided with a calculating bearing (21), and the calculating bearings (21) are arranged on the frame (6).

7. The cleaning structure of a solder paste printer according to claim 1, wherein: the cleaning and compacting mechanism (3) comprises a cleaning pipe (31), hinge plates (33) are arranged on two sides of the cleaning pipe (31), the hinge plates (33) are arranged on a cleaning cylinder (32), and the cleaning cylinder (32) is arranged on the frame (6); a wiping plate (34) is arranged above the cleaning pipe (31), and a positive pressure interface (35) and a negative pressure interface (36) are arranged below the cleaning pipe (31); a positive pressure port (35) and a negative pressure port (36) are connected to the wiper plate (34).

8. The cleaning structure of a solder paste printer according to claim 1, wherein: the dipping mechanism (4) comprises a dipping groove (41), a dipping shaft (43) and a paper pressing shaft (44) are arranged in the dipping groove (41), a gear (45) and a dipping motor (46) are arranged at one end of the dipping shaft (43), and the dipping motor (46) rotates to drive the dipping shaft (43) to rotate through the gear (45).

9. The cleaning structure of a solder paste printer according to claim 1, wherein: the paper conveying and cleaning mechanism (5) comprises conveying rollers (52), two ends of each conveying roller (52) are respectively provided with a conveying bearing (51), the conveying bearings (51) are rotatably arranged on the frame (6), and cleaning paper (14) is sleeved on each conveying roller (52).

10. The cleaning structure of a solder paste printer according to claim 1, wherein: the two sides of the frame (6) are provided with sliding blocks (66), and the frame (6) is also provided with a paper changing sensor (67).