CN114845472B - Etching device for high-precision HDI circuit board - Google Patents

Abstract

The application discloses an etching process and equipment for a high-precision HDI circuit board, and particularly relates to the technical field of circuit board etching. The application can realize the reciprocating pressing of the circuit board and the dry film, improves the film pressing quality, ensures that the dry film can be completely attached to the circuit board, and avoids the penetration of liquid medicine into the biting line during etching.

Description

Etching device for high-precision HDI circuit board

Technical Field

The application relates to the technical field of circuit board etching, in particular to a device for etching a high-precision HDI circuit board.

Background

The HDI circuit board is a structural element formed by insulating materials with conductor wiring, on which integrated circuits, transistors, diodes, passive elements and other various electronic components are mounted in the final product, and electronic signal connections and due functions can be formed by wire connection, so that the printed circuit board is a platform for providing element connections for receiving the basis of the connection parts. In the manufacturing process of the circuit board, a developing dry film is required to be pressed on the surface, and a film pressing device is required.

The prior art solutions have many problems: because the height difference exists between the copper surface of the circuit and the position of the base material, the film cannot be completely attached to the surface of the circuit, and liquid medicine permeates into the etched circuit during etching; because a large number of slotted holes exist on the plate surface, dry film hole breakage easily occurs during etching, so that the hole copper is bitten. In view of this, it is necessary to provide an etching apparatus for high-precision HDI circuit boards.

Disclosure of Invention

In order to overcome the defects in the prior art, the application provides a device for etching a high-precision HDI circuit board, which solves the problems that in the prior art, the height difference exists between the copper surface of a circuit and the position of a base material, a film cannot be completely attached to the surface of the circuit, and liquid medicine permeates into a etched circuit during etching.

In order to achieve the above object, the present application provides the following technical solutions: the utility model provides a device is used in etching to high accuracy HDI circuit board, includes the work platen, the upper surface left side fixed mounting of work platen has around the membrane frame, the upper surface intermediate position of work platen is equipped with places the platform, the upper surface fixed mounting who places the platform has a plurality of connecting springs, the top fixed mounting of connecting spring has the sponge board, the top fixed mounting of sponge board has places the board, both sides all are equipped with elevating system around placing the platform, the outside of placing the platform is equipped with first rack, both sides top all fixed mounting has the slide around the first rack, and two slides place in opposite directions, two the inside of slide has the threaded rod through bearing movable mounting, two equal threaded connection has the movable block on the threaded rod, two fixedly connected with connecting axle between the movable block, the compression roller has been cup jointed on the connecting axle.

In a preferred implementation mode, the upper surface right side of work platen is equipped with transmission device, transmission device includes two sets of fixing bases, two sets of equal movable mounting has the transmission shaft between the fixing base, two all cup jointed the transfer roller on the transmission shaft, two be equipped with transmission belt on the transfer roller, the right side the rear end of transmission shaft passes the rear surface of the fixing base of right rear side, the upper surface rear side fixed mounting of work platen has the motor mounting panel, fixed mounting has driving motor on the motor mounting panel, driving motor's output has all cup jointed belt pulley two with the rear end of right side transmission shaft, two be equipped with driving belt two on the belt pulley, start driving motor during the use, driving motor's output takes place to rotate, and the transmission shaft takes place to rotate under the effect of two belt pulleys two and driving belt two to realized the rotation of transmission belt, driving belt transports the circuit board.

In a preferred embodiment, the outside of transmission device is equipped with the second rack, be equipped with the point gum machine on the second rack, the inside point gum head that is provided with of point gum machine can dismantle filter equipment, and the colloid pipeline, wherein can dismantle filter equipment top is connected with the heating and mixes the group, can dismantle filter equipment down and be connected with the colloid pipeline, colloid pipeline below is connected with the point gum head, and the point gum machine carries out the point gum to the slotted hole on the circuit board, appears the broken hole of dry film when avoiding the etching problem.

In a preferred embodiment, the detachable filtering device comprises a rotary hemisphere and a fixing plate, wherein the fixing plate is in matched combination with the rotary hemisphere, the detachable filtering device comprises two groups of rotary hemispheres and the fixing plate, the rotary hemisphere is in a semicircular arc shape with a hollow inside, the fixing plate is in a V-shaped structure, clamping grooves are formed in two ends of the fixing plate, the fixing plate can be used for fixing the rotary hemispheres in the middle of the fixing plate in a rotating mode through matching, and uniform protruding structures are arranged on the outer sides of the rotary hemispheres, so that glue can flow through protruding gaps on the outer sides of the rotary hemispheres. The rotary hemispheres and the fixing plates are fixed above the colloid pipelines through clamping grooves after being combined.

In a preferred embodiment, the right ends of the two threaded rods penetrate through the right side face of the sliding seat, the right ends of the two threaded rods are sleeved with first belt pulleys, first transmission belts are arranged between the first belt pulleys, the right ends of the threaded rods are fixedly connected with rocking handles on the rear sides, the rocking handles are rotated to rotate the rear side threaded rods, and the two threaded rods are rotated under the action of the first belt pulleys and the first transmission belts.

In a preferred embodiment, two left side top fixed mounting of slide has the third rack, the lower surface intermediate position of third rack is equipped with the cylinder, the cylinder end department fixed mounting of cylinder has the blade, and the blade moves down under the effect of cylinder, cuts the dry film, realizes pressing the membrane while cutting the membrane, improves the film pressing efficiency.

In a preferred embodiment, the lifting mechanism comprises two hydraulic cylinders, the two hydraulic cylinders are respectively and fixedly arranged on the front side and the rear side of the placing table, an L-shaped lifting rod is fixedly arranged at the cylinder head of each hydraulic cylinder, an L-shaped lifting plate is fixedly arranged on the inner side surface of each L-shaped lifting rod, connecting grooves are formed in the front side and the rear side of the placing table, one end of each L-shaped lifting plate is arranged in each connecting groove, the two hydraulic cylinders can extend or retract to drive the placing table to move in the vertical direction, so that the distance between the circuit board and the compression roller is adjusted, and film pressing operation on the circuit boards with different thicknesses is facilitated.

In a preferred embodiment, the four corners of the lower surface of the workbench plate are fixedly provided with supporting legs, so that the stability of the workbench is ensured during use.

Compared with the prior art, the application has the beneficial effects that:

1. according to the application, by arranging the sliding seat, the threaded rod, the movable block, the connecting shaft and the press roller, an operator rotates the rocking handle in the film pressing process, the rocking handle drives the threaded rod at the rear side to rotate, the threaded rod at the front side is also rotated under the connection of the two belt pulleys I and the transmission belt I, so that the movement of the two movable blocks is realized, the movable block drives the connecting shaft and the press roller to move, the film pressing operation of a circuit board is realized, the operator adjusts the rotation direction of the rocking handle in the process, the reciprocating movement of the press roller can be realized, the continuous pressing of the circuit board and the dry film is realized, the dry film can be completely attached on the circuit board, and the liquid medicine is prevented from penetrating into a biting line during etching;

2. according to the application, the connecting spring, the sponge plate and the lifting mechanism are arranged, when the placing plate is contacted with the compression roller under the action of the lifting mechanism, the hydraulic cylinder is continuously started, the placing plate continuously drives the circuit board and the film pressing plate to move upwards, the connecting spring and the sponge plate are in extrusion states, the film pressing treatment is carried out on the circuit board in the states, the dry film can be completely attached to the circuit board, the film pressing quality is improved, meanwhile, the connecting spring and the sponge plate can play a buffering role, and the circuit board is effectively prevented from being damaged in the film pressing process.

3. According to the application, the detachable filter device is arranged, the limit fixing of the rotary hemisphere can be realized through simple rotary combination by arranging the fixing plate and the rotary hemisphere through cooperation between the combination, the filtering effect on undissolved large particles of colloid is realized through the external protruding mechanism of the rotary hemisphere, meanwhile, the replacement of the detachable device can be realized rapidly aiming at colloids of different types, the problem to be solved is solved by utilizing a simple structure, and meanwhile, the device is simple, rapid and efficient.

Drawings

For a clearer description of embodiments of the present application or technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of the present application;

FIG. 2 is a schematic diagram of the whole structure of the present application;

FIG. 3 is a schematic view of the structure of the present application after removal of the press rolls;

FIG. 4 is an enlarged schematic view of FIG. 1A in accordance with the present application;

FIG. 5 is an enlarged schematic view of B of FIG. 2 in accordance with the present application;

FIG. 6 is a schematic view of a dispenser according to the present application;

FIG. 7 is a schematic view of the removable filter device of the present application;

FIG. 8 is a schematic view showing a disassembled state of the detachable filter device of the present application;

fig. 9 is a schematic view showing the assembly state of the detachable filter device of the present application.

Reference numerals illustrate:

1. a work platen; 2. a film winding frame; 3. a placement table; 4. a connecting spring; 5. a sponge plate; 6. placing a plate; 7. a first rack; 8. a slide; 9. a threaded rod; 10. a moving block; 11. a connecting shaft; 12. a press roller; 13. a transmission device; 1301. a fixing seat; 1302. a conveying roller; 1303. a conveyor belt; 1304. a motor mounting plate; 1305. a driving motor; 1306. a belt pulley II; 1307. a second transmission belt; 14. a first belt pulley; 15. a first transmission belt; 16. a rocking handle; 17. a third rack; 18. a cylinder; 19. a blade; 20. a second rack; 21. a dispensing machine; 22. support legs; 23. a lifting mechanism; 2301. a hydraulic cylinder; 2302. an L-shaped lifting rod; 2303. an L-shaped lifting plate; 30. dispensing heads; 31. a detachable filter device; 32. a colloid pipe; 33. rotating the hemisphere; 34. a fixing plate; 35. a clamping groove.

Description of the embodiments

Other advantages and advantages of the present application will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1-5 of the specification, an etching device for a high-precision HDI circuit board of this embodiment includes a working platen 1, a film winding frame 2 is fixedly mounted on the left side of the upper surface of the working platen 1, a placement table 3 is disposed in the middle of the upper surface of the working platen 1, a plurality of connecting springs 4 are fixedly mounted on the upper surface of the placement table 3, a sponge plate 5 is fixedly mounted on the top end of the connecting springs 4, a placement plate 6 is fixedly mounted on the top end of the sponge plate 5, lifting mechanisms 23 are disposed on the front and rear sides of the placement table 3, the lifting mechanisms 23 include two hydraulic cylinders 2301, the two hydraulic cylinders 2301 are fixedly mounted on the front and rear sides of the placement table 3, an L-shaped lifting rod 2302 is fixedly mounted at the cylinder head of the hydraulic cylinder 1, an L-shaped lifting plate 2303 is fixedly mounted on the inner side surface of the L-shaped lifting rod 2302, the connecting grooves are formed on the front side and the rear side of the placing table 3, one end of the L-shaped lifting plate 2303 is arranged in the connecting grooves, the hydraulic cylinder 2301 is started in the film pressing process to be convenient for adjusting the distance between the circuit board and the pressing roller 12, a better film pressing effect is realized, the buffer effect can be realized under the action of the connecting spring 4 and the sponge plate 5, therefore, when the placing plate 6 contacts with the pressing roller 12 under the action of the lifting mechanism 23, the hydraulic cylinder 2301 can be continuously started, the connecting spring 4 and the sponge plate 5 are in an extrusion state, the pressing roller 12 presses the circuit board and the dry film, the dry film can be completely attached on the circuit board, the film pressing quality is improved, the first placing frame 7 is arranged on the outer side of the placing table 3, the sliding seats 8 are fixedly arranged on the top ends of the front side and the rear side of the first placing frame 7, the two sliding seats 8 are placed in opposite directions, the inside of two slide 8 is all through bearing movable mounting threaded rod 9, two equal threaded connection has movable block 10 on the threaded rod 9, two fixedly connected with connecting axle 11 between the movable block 10, compression roller 12 has been cup jointed on the connecting axle 11, two the right-hand member of threaded rod 9 all passes the right flank of slide 8, two the belt pulley one 14 has all been cup jointed to the right-hand member of threaded rod 9, two be equipped with driving belt one 15 between the belt pulley one 14, the rear side the right-hand member fixedly connected with rocking handle 16 of threaded rod 9 rotates rocking handle 16 and realizes the rotation of rear side threaded rod 9, realizes the synchronous rotation of two threaded rods 9 under the connection of belt pulley one 14 and driving belt one 15.

The utility model discloses a dry film adhesive dispensing machine is characterized in that a transmission device 13 is arranged on the right side of the upper surface of a working platen 1, the transmission device 13 comprises two groups of fixing seats 1301, two groups of transmission shafts are movably arranged between the fixing seats 1301, two transmission shafts are sleeved with transmission rollers 1302, two transmission belts 1303 are arranged on the transmission rollers 1302, the right side of the transmission shafts penetrate through the rear surface of the right rear fixing seat 1301, a motor mounting plate 1304 is fixedly arranged on the rear side of the upper surface of the working platen 1, a driving motor 1305 is fixedly arranged on the motor mounting plate 1304, a belt pulley two 1306 is sleeved with the output end of the driving motor 1305 and the rear end of the right transmission shaft, a transmission belt two 1307 is arranged on the belt pulley two 1306, a second placing frame 20 is arranged on the outer side of the transmission device 13, a dispensing machine 21 is arranged on the second placing frame 20, an operator starts the driving motor 1305 after film pressing is finished, the output end of the driving motor 1305 rotates under the action of the two belt pulleys two 1306 and the transmission belt two 1307, thereby the transmission shafts rotate, the rotation of the transmission belt 1303 is realized, the transmission belt is carried out, the problem of a dry film adhesive dispensing machine is effectively avoided when the circuit holes of the transmission belt 1303 are broken, and the circuit holes of the dry film adhesive dispensing machine is effectively prevented from being etched.

Support legs 22 are fixedly arranged at four corners of the lower surface of the workbench plate 1, and fixing legs are fixedly arranged between the two support legs 22 at the front side and the two support legs 22 at the rear side, so that the stability of the workbench is effectively ensured in the use process.

The implementation scene is specifically as follows: in the use process of the application, an operator firstly places a circuit board on a placing plate 6, a dry film is pulled to the upper side of the circuit board from a film winding frame 2, then the operator starts a lifting mechanism 23, the output ends of two hydraulic cylinders 2301 drive an L-shaped lifting rod 2302 to move, thereby driving an L-shaped lifting plate 2303, a placing table 3, the placing plate 6 and the circuit board to move vertically, realizing the adjustment of the distance between the circuit board and a press roll 12, when the circuit board and the dry film are contacted with the press roll 12, the operator rotates a rocking handle 16, the rocking handle 16 drives a threaded rod 9 at the rear side to rotate, the threaded rod 9 at the front side under the connection of two belt pulleys 14 and a first transmission belt 15 also rotates, so that the movement of two moving blocks 10 is realized, the moving blocks 10 drive a connecting shaft 11 and the press roll 12 to move, thus realizing the film pressing operation of the circuit board, in the process, an operator changes the rotating direction of the rocking handle 16 once every other time to realize the reciprocating movement of the pressing roller 12 and realize the continuous pressing of the circuit board and the dry film, so that the dry film can be completely attached to the circuit board to avoid the penetration of liquid medicine into a line during etching, when different colloids are aimed at, the filtration of undissolved particles of the different colloids is required, at the moment, the satisfactory rotating hemispheres are respectively arranged on two groups of fixed plates and are mutually buckled in a crossed way, at the moment, the fixed plates can be mutually rotated and detached only when the opening ends of the rotating hemispheres are consistent with the opening directions of the fixed plates, or else, the two groups of rotating hemispheres and the fixed plates are mutually restricted through the buckling fit between the rotating hemispheres and the buckling fit between the fixed plates and the fixed plates, so that the two groups of rotating hemispheres and the fixed plates cannot be scattered by themselves, simultaneously, the rotary hemisphere is guaranteed to be rotatably fixed in the fixed plate, and heated glue flows into the colloid pipeline from the protruding part outside the rotary hemisphere, and particle matters which are not dissolved in the colloid can be filtered between the protruding part outside the rotary hemisphere and the fixed plate, so that the blockage of the colloid pipeline can be prevented, and the quality of the glue is improved.

Referring to fig. 2 of the specification, in the etching device for a high-precision HDI circuit board according to this embodiment, the left side top ends of two slide bases 8 are fixedly provided with third placing frames 17, the middle positions of the lower surfaces of the third placing frames 17 are provided with air cylinders 18, the cylinder heads of the air cylinders 18 are fixedly provided with blades 19, when film pressing operation is performed, operators start the air cylinders 18, the output ends of the air cylinders 18 drive the blades 19 to move downwards, and dry films are cut, so that film pressing and film cutting operation is performed, and film pressing efficiency of the circuit board is greatly improved.

Finally: the foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.

Claims (3)

1. The utility model provides a device is used in etching to high accuracy HDI circuit board, includes work platen (1), its characterized in that: the novel automatic rolling machine is characterized in that a film winding frame (2) is fixedly arranged on the left side of the upper surface of the working table plate (1), a placing table (3) is arranged in the middle of the upper surface of the working table plate (1), a plurality of connecting springs (4) are fixedly arranged on the upper surface of the placing table (3), a sponge plate (5) is fixedly arranged at the top end of the connecting springs (4), a placing plate (6) is fixedly arranged at the top end of the sponge plate (5), lifting mechanisms (23) are respectively arranged on the front side and the rear side of the placing table (3), a first placing frame (7) is arranged on the outer side of the placing table (3), sliding bases (8) are respectively fixedly arranged at the top ends of the front side and the rear side of the first placing frame (7), two sliding bases (8) are oppositely placed, threaded rods (9) are respectively movably arranged in the two sliding bases (8), a moving block (10) are respectively connected with threads on the threaded rods (9), a connecting shaft (11) are fixedly connected between the moving blocks (10), and a compression roller (12) is sleeved on the connecting shaft (11). The right side of the upper surface of the workbench plate (1) is provided with a transmission device (13), the transmission device (13) comprises two groups of fixing seats (1301), transmission shafts are movably arranged between the two groups of fixing seats (1301), transmission rollers (1302) are sleeved on the two transmission shafts, transmission belts (1303) are arranged on the two transmission rollers (1302), the right side of the transmission shafts penetrate through the rear surface of the fixing seats (1301) on the right rear side, the rear side of the upper surface of the workbench plate (1) is fixedly provided with a motor mounting plate (1304), the motor mounting plate (1304) is fixedly provided with a driving motor (1305), the output end of the driving motor (1305) and the rear end of the right transmission shaft are sleeved with belt pulleys II (1306), and the belt pulleys II (1306) are provided with transmission belts II (1307); the outer side of the transmission device (13) is provided with a second placing frame (20), a dispensing machine (21) is arranged on the second placing frame (20), a dispensing head (30) is arranged in the dispensing machine (21), a detachable filter device (31) and a colloid pipeline (32) are arranged inside the dispensing machine, a heating mixing group is connected above the detachable filter device (31), the detachable filter device (31) is connected with the colloid pipeline (32), the lower part of the colloid pipeline (32) is connected with the dispensing head (30), and the dispensing machine (21) dispenses a slot hole on a circuit board, so that the problem of dry film hole breaking during etching is avoided; the detachable filter device (31) comprises a rotary hemisphere (33) and a fixed plate (34), the fixed plate (34) is in matched combination with the rotary hemisphere (33), the detachable filter device (31) comprises two groups of rotary hemispheres (33) and fixed plates (34), the rotary hemisphere (33) is in a semicircular arc shape with hollow inside, the fixed plate (34) is in a V-shaped structure, clamping grooves (35) are formed in two ends of the fixed plate (34), the two rotary hemispheres (33) can be rotationally fixed in the middle position of the fixed plate (34) through matching, and uniform protruding structures are arranged outside the rotary hemispheres (33) so that glue can flow through protruding gaps outside the rotary hemispheres (33); the rotary hemisphere (33) and the fixed plate (34) are combined and then fixed above the colloid pipeline through a clamping groove (35); the right ends of the two threaded rods (9) penetrate through the right side surface of the sliding seat (8), the right ends of the two threaded rods (9) are sleeved with belt pulleys I (14), a transmission belt I (15) is arranged between the two belt pulleys I (14), and the right end of the threaded rod (9) at the rear side is fixedly connected with a rocking handle (16); lifting mechanism (23) are including two pneumatic cylinders (2301), two pneumatic cylinders (2301) are fixed mounting respectively in the front and back side of placing platform (3), the cylinder end department fixed mounting of pneumatic cylinder (2301) has L shape lifting rod (2302), the medial surface fixed mounting of L shape lifting rod (2302) has L shape lifting plate (2303), the spread groove has all been seted up to the front and back both sides of placing platform (3), the one end of L shape lifting plate (2303) is established in the spread groove.

2. The apparatus for etching a high-precision HDI circuit board according to claim 1, wherein: a third placing rack (17) is fixedly arranged at the top ends of the left sides of the two sliding seats (8), an air cylinder (18) is arranged in the middle of the lower surface of the third placing rack (17), and a blade (19) is fixedly arranged at the cylinder head of the air cylinder (18).

3. The apparatus for etching a high-precision HDI circuit board according to claim 1, wherein: support legs (22) are fixedly arranged at four corners of the lower surface of the workbench plate (1).