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CN-117505327-B - Screen plate cleaning device and method

CN117505327BCN 117505327 BCN117505327 BCN 117505327BCN-117505327-B

Abstract

The invention discloses a screen plate cleaning device and method, comprising a fixed frame and a movable frame, wherein a spraying station is arranged on the fixed frame, a first wiping station, a second wiping station and an air drying station are transversely arranged at the top of the movable frame in sequence along the advancing direction of the movable frame, a first wiping rod and a first lifting cylinder for lifting the first wiping rod are arranged at the first wiping station, dust-free cloth is arranged above the first wiping rod and is supported and wiped through the first wiping rod, a vacuum pumping groove for vacuum adsorption is formed at the top of the first wiping rod along the length direction of the first wiping rod, and the vacuum pumping groove is connected with vacuum pumping equipment. The invention realizes the dry-wet separation wiping of the screen plate by the cooperation of the spraying station, the first wiping station, the air drying station and the second wiping station, effectively cleans the screen plate, realizes the wet wiping of the first wiping station by the cooperation of the spraying station and the dust-free cloth, and realizes the vacuum wiping of the first wiping station by the cooperation of the vacuumizing groove and the dust-free cloth.

Inventors

  • LIN HAITAO
  • ZHAO KAI
  • LIANG MENG
  • HE WENBIN
  • LI BIN

Assignees

  • 上海世禹精密设备股份有限公司

Dates

Publication Date
20260505
Application Date
20231020

Claims (9)

  1. 1. The screen plate cleaning device is characterized by comprising a fixed frame (10) and a movable frame (20) which moves back and forth along the fixed frame (10), wherein a screen plate (30) is arranged on the fixed frame (10), and the movable frame (20) is positioned below the screen plate (30); the fixed frame (10) is provided with a spraying station (11), the spraying station (11) is positioned above the movable frame (20), and the top of the movable frame (20) is sequentially and transversely provided with a first wiping station (21), a second wiping station (22) and an air drying station (23) along the advancing direction of the movable frame; the first wiping station (21) is provided with a first wiping rod (211) and a first lifting cylinder (213) for lifting the first wiping rod (211), dust-free cloth is arranged above the first wiping rod (211) and is supported and wiped by the first wiping rod (211), a vacuumizing groove (212) for vacuum adsorption is formed in the top of the first wiping rod (211) along the length direction of the first wiping rod, and the vacuumizing groove (212) is connected with vacuumizing equipment; the first wiping station (21) is further provided with a unreeling shaft (217) and a reeling shaft (218), wherein the unreeling shaft (217), the reeling shaft (218) and the first wiping rod (211) are sequentially distributed from top to bottom along the advancing direction of the movable rack (20), and the first wiping rod comprises the following components: One end of the unreeling shaft (217) is rotatably mounted on the movable frame (20) and is provided with a damper (2171) for applying unreeling resistance to the unreeling shaft (217), the other end of the unreeling shaft is detachably and rotatably connected with the telescopic end of a first assembling and disassembling cylinder (2172) through a bearing, and the damper (2171) and the first assembling and disassembling cylinder (2172) are both fixed on the movable frame (20); One end of the winding shaft (218) is rotatably mounted on the movable frame (20) and is provided with a driving motor (2181) for driving the winding shaft (218) to rotate, the other end of the winding shaft is detachably and rotatably connected with the telescopic end of the second loading and unloading cylinder (2182) through a bearing, and the driving motor (2181) and the second loading and unloading cylinder (2182) are both fixed on the movable frame (20).
  2. 2. The screen cleaning device according to claim 1, wherein the first wiping bar (211) is provided with a supporting bar (214) detachably connected with the vacuumizing groove (212), and the top of the supporting bar (214) protrudes out of the top of the first wiping bar (211).
  3. 3. The screen cleaning device according to claim 1, wherein the lifting end of the first lifting cylinder (213) is connected to the bottom end of the first wiping rod (211) through a first fixing block (215), and a plurality of first buffer springs (216) are arranged between the first fixing block (215) and the first wiping rod (211).
  4. 4. The screen cleaning device according to claim 1, wherein the second wiping station (22) comprises a second wiping bar (221) and a second lifting cylinder (222) for lifting and lowering the second wiping bar (221), the top of the second wiping bar (221) is embedded with a rubber strip (223) along the length direction thereof, and the top of the rubber strip (223) protrudes out of the top of the second wiping bar (221).
  5. 5. The screen cleaning apparatus according to claim 4, wherein the lifting end of the second lifting cylinder (222) is connected to the bottom end of the second wiping rod (221) through a second fixing block (224), and a plurality of second buffer springs (225) are provided between the second fixing block (224) and the second wiping rod (221).
  6. 6. The screen cleaning apparatus according to claim 1, wherein a motor (24) is provided at a bottom of the movable frame (20), a rail is provided at a bottom of the fixed frame (10), and the movable frame (20) is moved back and forth on the rail by driving of the motor (24).
  7. 7. The screen cleaning apparatus according to claim 6, wherein the movable frame (20) is divided into an upper portion and a lower portion, the upper portion is provided at a top of the lower portion and moves forward and backward along the lower portion, a driving cylinder (25) is fixed to a top of the lower portion, a telescopic end of the driving cylinder (25) is connected to the upper portion, the motor (24) is provided at a bottom of the lower portion, and the upper portion is moved forward and backward at a top of the lower portion by driving of the driving cylinder (25).
  8. 8. The screen cleaning method of the screen cleaning apparatus according to any one of claims 1 to 7, comprising the steps of: S1, the movable frame (20) moves to the position right below the spraying station (11) along the fixed frame (10), and the spraying station (11) sprays dust-free cloth arranged above the first wiping rod (211); s2, stopping the operation of the spraying station (11) after the spraying is finished, and resetting the movable frame (20); S3, the movable frame (20) moves back and forth along the fixed frame (10) in a reciprocating mode, and meanwhile the first wiping station (21) supports the dust-free cloth to wet and wipe the bottom of the screen plate (30); S4, after wet wiping is finished, the first wiping station (21) and the movable rack (20) are reset in sequence; S5, the movable frame (20) moves back and forth along the fixed frame (10), meanwhile the air drying station (23) blows air to the bottom of the screen plate (30), and the second wiping station (22) wipes the bottom of the screen plate (30) in a dry mode; S6, after dry wiping is finished, the air drying station (23) stops running, and the first wiping station (21) and the movable frame (20) are reset in sequence.
  9. 9. The method according to claim 8, wherein in S3, the first wiping station (21) supports the dust-free cloth to simultaneously wet-wipe and vacuum-adsorb the bottom of the screen (30).

Description

Screen plate cleaning device and method Technical Field The invention relates to the technical field of tin ball planting, in particular to a screen plate cleaning device and method. Background With the continuous progress of technology, the requirements on chips are continuously improved, and the planting of solder balls is carried out. Because the solder balls have high purity and good stability, the ball height and ball diameter are controllable, and the solder balls are widely used. Before the solder balls are planted, paste materials such as soldering flux are printed on a screen plate through a scraper, and the materials are transferred onto a wafer or a substrate. When paste-like substances such as flux are printed, substances exposed from the printed holes may adhere to the screen, and substances that have not been transferred to the wafer or the substrate may remain in the holes to cause offset. This residue causes offset that prevents proper printing of subsequent wafers, substrates. The screen must be cleaned of residual material. The prior art merely wipes the web with dust free paper, thereby cleaning the web of residual material. The cleaning method is only suitable for simple cleaning, but not suitable for the screen plate which is difficult to wipe. In addition, the cleaning method cannot ensure the cleanliness of the screen plate when facing the screen plate with small mesh specification and small mesh spacing. Disclosure of Invention The invention aims to provide a screen plate cleaning device and a screen plate cleaning method, which can effectively clean a screen plate and improve the yield of a ball planting process and the stability of products. The aim of the invention can be achieved by the following technical scheme: in one aspect, a screen cleaning device is provided, including a fixed frame and a movable frame moving back and forth along the fixed frame, wherein a screen is arranged on the fixed frame, and the movable frame is positioned below the screen; The top of the movable frame is sequentially and transversely provided with a first wiping station, a second wiping station and an air drying station along the advancing direction of the movable frame; The first wiping station is provided with a first wiping rod and a first lifting cylinder for lifting the first wiping rod, dust-free cloth is arranged above the first wiping rod and is supported and wiped by the first wiping rod, a vacuumizing groove for vacuum adsorption is formed in the top of the first wiping rod along the length direction of the first wiping rod, and the vacuumizing groove is connected with vacuumizing equipment. As a further scheme of the invention, a supporting rod detachably connected with the vacuumizing groove is arranged on the first wiping rod, and the top of the supporting rod protrudes out of the top of the first wiping rod. As a further scheme of the invention, the lifting end of the first lifting cylinder is connected with the bottom end of the first wiping rod through a first fixed block, and a plurality of first buffer springs are arranged between the first fixed block and the first wiping rod. The first wiping station is further provided with a unreeling shaft and a reeling shaft, wherein the unreeling shaft, the reeling shaft and the first wiping rod are sequentially distributed from top to bottom along the advancing direction of the movable rack, and the unreeling shaft, the reeling shaft and the first wiping rod are sequentially distributed from top to bottom, wherein: One end of the unreeling shaft is rotatably arranged on the movable frame and is provided with a damper for applying unreeling resistance to the unreeling shaft, the other end of the unreeling shaft is detachably and rotatably connected with the telescopic end of the first loading and unloading cylinder through a bearing, and the damper and the first loading and unloading cylinder are both fixed on the movable frame; One end of the winding shaft is rotatably mounted on the movable frame and is provided with a driving motor for driving the winding shaft to rotate, the other end of the winding shaft is detachably and rotatably connected with the telescopic end of the second loading and unloading cylinder through a bearing, and the driving motor and the second loading and unloading cylinder are both fixed on the movable frame. As a further scheme of the invention, the second wiping station comprises a second wiping rod and a second lifting cylinder for lifting the second wiping rod, wherein a rubber strip is embedded at the top of the second wiping rod along the length direction of the second wiping rod, and the top of the rubber strip protrudes out of the top of the second wiping rod. As a further scheme of the invention, the lifting end of the second lifting cylinder is connected with the bottom end of the second wiping rod through a second fixed block, and a plurality of second buffer springs are arranged between the second fixe