CN114928942A

CN114928942A - Scraper for circuit board

Info

Publication number: CN114928942A
Application number: CN202210425463.7A
Authority: CN
Inventors: 康孝恒; 蔡克林; 李清雄; 叶奇; 唐波; 杨飞; 许凯
Original assignee: Meiqi Circuit Jiangmen Co ltd
Current assignee: Meiqi Circuit Jiangmen Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-08-19

Abstract

The invention discloses a circuit board scraper, comprising: base, portal frame, scraper blade subassembly and centre gripping subassembly. The gantry is vertically arranged on the base and comprises two stand columns and a top column connected with the two stand columns; the scraper component comprises a first driving mechanism, a second driving mechanism and two scrapers which are oppositely arranged by taking a vertical plane where the two upright posts are positioned as a symmetrical plane, wherein the first driving mechanism is used for enabling the two scrapers to be close to or far away from each other, and the second driving mechanism is used for enabling the two scrapers to move up and down along the upright posts; the clamping component is arranged on the top column to clamp and fix the circuit board. The circuit board scraper can efficiently remove residual resin on a circuit board and improve the efficiency of scraping.

Description

Circuit board scraper

Technical Field

The invention relates to the field of circuit board scrapers, in particular to a circuit board scraper.

Background

In the production of circuit boards, in order to protect the metal on the hole wall of the through hole of the circuit board and improve the reliability, the hole is usually plugged by resin filling. After the plugging operation is performed on the circuit board, more resin often remains on the circuit board, and if the remaining resin is not removed, the subsequent processing of the circuit board is affected. At present, the common scraping mode is an artificial scraping plate, or mechanical equipment is adopted to conduct single-side scraping on a flat circuit board, and the scraping efficiency is low.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a circuit board scraper which can efficiently remove residual resin on a circuit board and improve the efficiency of scraping.

The purpose of the invention is realized by adopting the following technical scheme:

a circuit board squeegee comprising:

a base;

the portal frame is vertically arranged on the base and comprises two upright posts and a top post connected with the two upright posts;

the scraper component comprises a first driving mechanism, a second driving mechanism and two scraping blades which are oppositely arranged by taking a vertical plane where the two upright posts are positioned as a symmetrical plane, wherein the first driving mechanism is used for enabling the two scraping blades to be close to or far away from each other, and the second driving mechanism is used for enabling the two scraping blades to move up and down along the upright posts;

and the clamping assembly is arranged on the top column to clamp and fix the circuit board.

Further, the first driving mechanism comprises two cylinder groups, the two cylinder groups are respectively arranged at two ends of the length direction of the scraping blade, each cylinder group comprises two cylinders which are arranged away from each other, the two cylinders of one cylinder group are correspondingly connected to the two scraping blades, the two cylinders of the other cylinder group are also correspondingly connected to the two scraping blades, and the second driving mechanism is used for driving the two cylinder groups to move up and down along the upright post.

Further, the second driving mechanism comprises a guide rail, a sliding block, a base plate and a chain wheel driving assembly; every all be provided with on the stand the guide rail, every all sliding fit has on the guide rail the slider, all be provided with on every slider the base plate, two the cylinder group sets up respectively on two the base plate, sprocket drive assembly is used for driving two base plates and follows the guide rail slides.

Furthermore, a rotating mechanism is arranged at the joint of the cylinder and the scraping blade and used for driving the scraping blade to rotate, so that an included angle formed by the scraping blade and a vertical plane where the two upright columns are located is adjustable.

Further, the rotating mechanism is a rotating motor, a fixed end of the rotating motor is connected with a telescopic end of the air cylinder, and an output end of the rotating motor is connected with the scraping blade.

Further, rotary mechanism include with the first sleeve that the flexible end of cylinder is connected, with second sleeve and the retaining member that the doctor-bar is connected, the second sleeve cup joints in the first sleeve, but first sleeve and second sleeve relative rotation pass through the retaining member is fixed.

Furthermore, the material of doctor-bar is silica gel.

Further, the centre gripping subassembly include deflector, a plurality of locking plate and with the locking bolt that locking plate quantity equals, the deflector is vertical to be set up the fore-set below, the locking plate with the fore-set is connected and with the deflector interval sets up, every all seted up the screw thread through-hole on the locking plate, every all be provided with in the screw thread through-hole locking bolt.

Furthermore, a proximity switch is arranged on the top column and is in signal connection with the second driving mechanism.

Furthermore, a material receiving disc is arranged on the base and is always positioned below the scraping blade.

Compared with the prior art, the invention has the beneficial effects that: when the scraper blade of the circuit board is used, the scraper blade can be used for scraping the two sides of the circuit board only once along the vertical column, the scraper blade is high in speed and high in efficiency, resin filled in the scraper blade can be prevented from being extruded from the other side of the circuit board by adopting a mode of simultaneously scraping the two sides, and the quality of the scraper blade is ensured. In addition, the distance between the scraping pieces can be adjusted through the first driving mechanism, so that a user can adjust the distance between the two scraping pieces according to the actual thickness of the circuit board, the circuit board scraper can adapt to circuit boards with different thicknesses, and compared with an artificial scraper, the consistency can be ensured, and the quality of the scraper is improved.

Drawings

FIG. 1 is a perspective view of the circuit board scraper of the present invention;

FIG. 2 is a perspective view of the circuit board squeegee with a portion of the housing removed.

In the figure: 1. a base; 21. a column; 22. a top pillar; 31. scraping a blade; 32. a cylinder; 33. a guide rail; 34. a slider; 35. a substrate; 41. a guide plate; 42. a locking plate; 43. locking the bolt; 51. a first sleeve; 52. a second sleeve; 53. a locking member; 6. a take-up pan.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, a circuit board scraper provided by an embodiment of the invention is shown, which at least comprises a base 1, a gantry, a scraper assembly and a clamping assembly. The gantry is erected on the base 1 and comprises two upright posts 21 and a top post 22 connected with the two upright posts 21. The scraper component comprises a first driving mechanism, a second driving mechanism and two scraping pieces 31 which are oppositely arranged by taking a vertical plane where the two upright posts 21 are located as a symmetrical plane, wherein the first driving mechanism is used for enabling the two scraping pieces 31 to be close to or far away from each other, and the second driving mechanism is used for enabling the two scraping pieces 31 to move up and down along the upright posts 21. The clamping assembly is disposed on the top post 22 to clamp and secure the circuit board. At the beginning, the two opposing blades 31 are in a state of being away from each other. In addition, in order to prevent the excess resin from falling onto the blade 31 during the blade scraping, the blade 31 generally needs to scrape from above.

During the use, at first the circuit board that will fill the resin is fixed with the centre gripping subassembly, secondly two doctor-bars 31 that set up relatively through first actuating mechanism drive are close to each other, until doctor-bar 31 and circuit board butt, drive doctor-bar 31 through the second actuating mechanism after that along stand 21 downstream to scrape unnecessary resin on the circuit board and fall, then two doctor-bars 31 that rethread first actuating mechanism drive set up relatively keep away from each other, release the circuit board through the centre gripping subassembly at last, accomplish the scraper blade to the circuit board.

Therefore, when the circuit board is subjected to the scraping, the two sides of the circuit board can be scraped only by moving along the upright post 21 once, the scraping speed is high, the efficiency is high, and the resin filled in the scraping can be prevented from extruding from the other side of the circuit board by adopting a mode of simultaneously scraping the two sides, so that the quality of the scraping is ensured. In addition, the distance between the scraping blades 31 can be adjusted through the first driving mechanism, so that a user can adjust the distance between the two scraping blades 31 according to the actual thickness of the circuit board, the circuit board can adapt to circuit boards with different thicknesses, and compared with an artificial scraping plate, the consistency can be ensured, and the quality of the scraping plate is improved.

In a preferred embodiment, the first driving mechanism includes two cylinder groups, two cylinder groups are disposed at two ends of the wiper blade 31 in the length direction, each cylinder group includes two cylinders 32 disposed away from each other, two cylinders 32 of one cylinder group are correspondingly connected to two wiper blades 31, two cylinders 32 of the other cylinder group are correspondingly connected to two wiper blades 31, and the second driving mechanism is used for driving the two cylinder groups to move up and down along the pillar 21. That is, in the present invention, the two blades 31 are close to or away from each other by the two cylinders 32 disposed away from each other, specifically, the two blades 31 are driven to be close to or away from each other by the telescopic movement of the cylinders 32. In the above arrangement, the cylinder groups are disposed at both ends of the scraping blade 31 in the length direction, so that when the two scraping blades 31 are close to each other, the abutting forces of both ends of the scraping blade 31 against the circuit board are the same, thereby ensuring the quality of the scraping blade.

Preferably, the second driving mechanism includes a guide rail 33, a slider 34, a base plate 35, and a sprocket drive assembly (not shown); each upright post 21 is provided with a guide rail 33, each guide rail 33 is provided with a sliding block 34 in a sliding fit mode, each sliding block 34 is provided with a base plate 35, the two cylinder groups are respectively arranged on the two base plates 35, and the chain wheel driving assembly is used for driving the two base plates 35 to slide along the guide rails 33. When the base plate 35 slides along the guide rail 33, the cylinder sets are driven to move synchronously, and the scraper 31 is connected with the cylinders 32 of the cylinder sets, so that the scraper 31 also moves synchronously with the base plate 35, and the up-and-down movement of the scraper 31 along the upright 21 is realized.

Preferably, a rotating mechanism is arranged at the joint of the cylinder 32 and the scraping blade 31, and the rotating mechanism is used for driving the scraping blade 31 to rotate, so that an included angle formed by the scraping blade 31 and a vertical plane where the two columns 21 are located is adjustable. The angle of the scraping blade 31 and the scraper of the circuit board can be adjusted through the rotating mechanism, so that a user can adjust the scraping blade 31 according to actual needs, and the quality of the scraping blade is guaranteed. For example, a user can adjust the included angle between the blade 31 and the circuit board to be an acute angle (that is, the blade 31 forms an acute angle with the moving direction thereof), and when the blade 31 moves downward, in addition to scraping off the excess resin, the blade also has a certain pressure on the resin along the axial direction of the circuit board through hole, so that the resin can more densely fill the through hole on the circuit board. Of course, the acute angle is also selected according to practical situations, for example, when the amount of residual resin on the circuit board is large, the scraping may be caused by selecting a smaller acute angle; in general, the acute angle is preferably between 80 and 85 °.

Specifically, the rotating mechanism is a rotating motor (not shown), a fixed end of the rotating motor is connected with a telescopic end of the cylinder 32, and an output end of the rotating motor is connected with the blade 31. I.e. in such a way that the angle of the blade 31 is adjusted mechanically by means of a rotating motor.

As another embodiment of the rotating mechanism, the rotating mechanism includes a first sleeve 51 connected to the telescopic end of the air cylinder 32, a second sleeve 52 connected to the blade 31, and a locking member 53, the second sleeve 52 is sleeved in the first sleeve 51, and the first sleeve 51 and the second sleeve 52 can rotate relatively and are fixed by the locking member 53. In this manner, the first sleeve 51 and the second sleeve 52 need to be manually operated to rotate relative to each other, so as to adjust the angle of the wiper blade 31.

Preferably, the material of the scraping blade 31 is silica gel. The damage to the circuit board can be reduced to the silica gel material.

Preferably, the centre gripping subassembly includes deflector 41, a plurality of locking plate 42 and the locking bolt 43 that equals with locking plate 42 quantity, and deflector 41 vertical setting is in the fore-set 22 below, and locking plate 42 is connected with the fore-set 22 and sets up with deflector 41 interval, has all seted up threaded through hole on every locking plate 42, all is provided with locking bolt 43 in every threaded through hole. That is, the circuit board is fixed by the locking bolt 43 pressing the circuit board against the guide plate 41.

Preferably, a proximity switch (not shown) is provided on the top post 22, the proximity switch being in signal communication with the second drive mechanism. Specifically, when the wiper blade 31 rises along the upright 21 to trigger the proximity switch, the second driving mechanism stops to prevent the wiper blade from striking the top pillar 22 and damaging the wiper blade.

Preferably, the base 1 is provided with a receiving tray 6, and the receiving tray 6 is always positioned below the scraping blade 31. The excess resin scraped from the circuit board can be collected through the receiving disc 6, so that the circuit board is convenient to clean.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A circuit board scraper, comprising:

a base (1);

the gantry is vertically arranged on the base (1) and comprises two upright posts (21) and a top post (22) connected with the two upright posts (21);

the scraper component comprises a first driving mechanism, a second driving mechanism and two scrapers (31) which are oppositely arranged by taking a vertical plane where the two upright posts (21) are located as a symmetrical plane, wherein the first driving mechanism is used for enabling the two scrapers (31) to be close to or far away from each other, and the second driving mechanism is used for enabling the two scrapers (31) to move up and down along the upright posts (21);

and the clamping assembly is arranged on the top column (22) to clamp and fix the circuit board.

2. The circuit board squeegee of claim 1, wherein: the first driving mechanism comprises two cylinder groups, the two cylinder groups are respectively arranged at two ends of the length direction of the scraping blades (31), each cylinder group comprises two cylinders (32) which are arranged away from each other, the two cylinders (32) of one cylinder group are correspondingly connected to the two scraping blades (31), the two cylinders (32) of the other cylinder group are correspondingly connected to the two scraping blades (31), and the second driving mechanism is used for driving the two cylinder groups to move up and down along the upright post (21).

3. The circuit board scraper of claim 2, characterized in that: the second driving mechanism comprises a guide rail (33), a sliding block (34), a base plate (35) and a chain wheel driving component; each upright post (21) is provided with a guide rail (33), each guide rail (33) is provided with a sliding block (34) in a sliding fit mode, each sliding block (34) is provided with a base plate (35), the two cylinder groups are respectively arranged on the two base plates (35), and the chain wheel driving assembly is used for driving the two base plates (35) to slide along the guide rails (33).

4. The circuit board squeegee of claim 3, wherein: a rotating mechanism is arranged at the joint of the cylinder (32) and the scraping blade (31), and the rotating mechanism is used for driving the scraping blade (31) to rotate so that the included angle formed by the scraping blade (31) and the vertical plane where the two upright columns (21) are located can be adjusted.

5. The circuit board squeegee of claim 4, wherein: the rotating mechanism is a rotating motor, the fixed end of the rotating motor is connected with the telescopic end of the air cylinder (32), and the output end of the rotating motor is connected with the scraping blade (31).

6. The circuit board squeegee of claim 4, wherein: the rotating mechanism comprises a first sleeve (51) connected with the telescopic end of the air cylinder (32), a second sleeve (52) connected with the scraping blade (31) and a locking piece (53), the second sleeve (52) is sleeved in the first sleeve (51), and the first sleeve (51) and the second sleeve (52) can rotate relatively and are fixed through the locking piece (53).

7. The circuit board squeegee of claim 1, wherein: the scraping piece (31) is made of silica gel.

8. The circuit board squeegee of claim 1, wherein: the centre gripping subassembly includes deflector (41), a plurality of locking plate (42) and with locking bolt (43) that locking plate (42) quantity equals, deflector (41) vertical setting is in fore-set (22) below, locking plate (42) with fore-set (22) connect and with deflector (41) interval sets up, every all set up threaded through-hole, every on locking plate (42) all be provided with in the threaded through-hole locking bolt (43).

9. The circuit board squeegee of claim 1, wherein: and a proximity switch is arranged on the top column (22) and is in signal connection with the second driving mechanism.

10. The circuit board squeegee of claim 1, wherein: the base (1) is provided with a material receiving disc (6), and the material receiving disc (6) is always positioned below the scraping piece (31).