An integrated circuit molding clearing mechanism and its working method

Abstract

This invention discloses an integrated circuit molding clearing mechanism and its working method, comprising: a slide rail moving assembly and upper and lower mold brush assemblies; the slide rail moving assembly is installed on both sides of the upper and lower molds; the slide rail moving assembly includes a linear slide rail; the upper and lower mold brush assemblies are installed on the slide rail moving assembly; the upper and lower mold brush assemblies can slide along the linear slide rail between the upper and lower molds to remove overflow and dust from the upper and lower molds. Using this integrated circuit molding clearing mechanism, automatic mold clearing can be achieved with high efficiency and without polluting the workshop environment.

Description

Technical Field

[0001] This invention belongs to the field of integrated circuit packaging technology, and specifically relates to an integrated circuit molding clearing mechanism and its working method. Background Technology

[0002] Currently, in the domestic integrated circuit packaging molding process, the overflow and dust between the upper and lower mold surfaces of the molding press are manually removed by repeatedly brushing with a handle brush and then blowing with an air gun. Ordinary operators can produce about 210 molds per shift in 8 hours. This manual operation is labor-intensive, pollutes the factory environment, and poses a risk to the health of the operators.

[0003] Therefore, it is necessary to provide an integrated circuit molding clearing mechanism to completely solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic mold cleaning mechanism for integrated circuit molding and its working method, so as to solve the technical problems existing in the prior art when cleaning the mold manually.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An integrated circuit molding clearing mechanism includes: a slide rail moving assembly and upper and lower mold brush assemblies;

[0007] The slide rail moving assembly is installed on both sides of the upper and lower molds; the slide rail moving assembly includes a linear slide rail;

[0008] The upper and lower mold brush assembly is mounted on the slide rail moving assembly; the upper and lower mold brush assembly can slide along the linear slide rail between the upper and lower molds to remove overflow and dust on the upper and lower molds.

[0009] A further improvement of the present invention is that the slide rail moving assembly includes a left horizontal plate, a right horizontal plate, and two sets of linear slide rails; the left and right horizontal plates are arranged in parallel on the left and right sides of the upper and lower molds; the two sets of linear slide rails are respectively arranged on the top of the left and right horizontal plates.

[0010] A further improvement of the present invention is that: the upper and lower mold brush assemblies are connected to the slide rail moving assembly through a gear and rack mechanism; the gear and rack mechanism includes a rack, a drive gear, a transmission motor and a reducer; the rack is installed on the inner side of the left or right horizontal plate; the transmission motor is fixed on the upper and lower mold brush assemblies; the transmission motor is connected to the drive gear through the reducer, and the drive gear meshes with the rack.

[0011] A further improvement of the present invention is that: locking sleeves are provided on the outer sides of both the left and right horizontal plates; the locking sleeves are installed on the corresponding guide pillars of the upper and lower molds; several reinforcing ribs are provided on the outer sides of both the left and right horizontal plates; and blocking blocks are also provided at the ends of the left and right horizontal plates to limit the movement range of the upper and lower mold brush assemblies.

[0012] A further improvement of the present invention is that a first slider connecting plate is installed on the linear slide rail of the left horizontal plate; and a second slider connecting plate is installed on the linear slide rail of the right horizontal plate.

[0013] The upper and lower mold brush assembly includes a fixed plate located at the center; a left side plate and a right side plate are fixed on both sides of the fixed plate respectively; the fixed plate is horizontally positioned between the left horizontal plate and the right horizontal plate; the left side plate and the right side plate are respectively fixedly connected to the first slider connecting plate and the second slider connecting plate.

[0014] A further improvement of the present invention is that: the fixing plate is provided with two cylinders, one cylinder with the piston rod end facing the upper mold and the other cylinder with the piston rod end facing the lower mold; the cylinder with the piston rod end facing the upper mold is connected to the upper mold brush fixing frame; the cylinder with the piston rod end facing the lower mold is connected to the lower mold brush fixing frame.

[0015] A further improvement of the present invention is that brush groups are fixed on both the upper mold brush fixing frame and the lower mold brush fixing frame; the brush group includes one spiral antistatic brush and two rectangular antistatic brushes, with the two rectangular antistatic brushes located on both sides of the spiral antistatic brush.

[0016] A further improvement of the present invention is that: the spiral antistatic brush is connected to a driven wheel, the driven wheel is connected to a driving wheel via a synchronous belt; the driving wheel is connected to a brush motor.

[0017] A further improvement of the present invention is that an ion gun and a dust collection cover are fixed on both the upper mold brush fixing frame and the lower mold brush fixing frame.

[0018] The working method of the integrated circuit molding clearing mechanism includes:

[0019] When the molding press opens the mold, the integrated circuit molding and clearing mechanism is activated;

[0020] The upper and lower mold brush assembly moves on a linear slide rail between the upper and lower molds; the brushes of the upper and lower mold brush assembly clean the upper and lower molds, removing overflow and dust from the upper and lower molds;

[0021] After cleaning, the upper and lower mold brush assemblies retract to their initial positions and wait for the mold to close, completing the entire mold cleaning process.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention provides an integrated circuit molding and clearing mechanism. When the molding press opens the mold, the integrated circuit molding and clearing mechanism is activated. Upper and lower mold brush assemblies move along a linear guide rail between the upper and lower molds. The brushes of the upper and lower mold brush assemblies clean the upper and lower molds, removing excess material and dust. After cleaning, the upper and lower mold brush assemblies return to their initial positions to wait for the mold to close, completing the entire clearing process. This invention achieves automatic mold clearing with high efficiency, does not pollute the workshop environment, and has promotional value.

[0024] Preferably, when the mold cleaning mechanism is started, the ion air gun is also started at the same time. The ion air blown out blows onto the mold surface to eliminate the static electricity of impurities on the mold surface. The spiral anti-static brush rotates and drives the impurities to flow out from the dust collection hood, which improves the dust collection efficiency and avoids polluting the workshop environment.

[0025] Preferably, the control system is a machine PLC control system, which is connected to a solenoid valve. The solenoid valve controls the lifting and lowering of the brush cylinder and the on / off of the compressed air of the ion gun, thereby raising and lowering the spiral antistatic brush and the rectangular antistatic brush to determine whether the brush is brushing the mold surface. Attached Figure Description

[0026] Figure 1 This is a front view of the molding and clearing mechanism of the present invention;

[0027] Figure 2 for Figure 1 The left view;

[0028] Figure 3 for Figure 1 Top view;

[0029] Figure 4 for Figure 1 Rear view;

[0030] Figure 5 This is a perspective view of the molding and clearing mechanism of the present invention;

[0031] Figure 6 This is an exploded view of the molding and clearing mechanism of the present invention. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0033] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0034] Please see Figures 1 to 6 As shown, the present invention provides an integrated circuit molding clearing mechanism, comprising: a slide rail moving assembly and an upper and lower mold brush assembly;

[0035] The slide rail moving assembly includes a left horizontal plate 50, a right horizontal plate 42, four locking sleeves 44, eight reinforcing ribs 46, two sets of linear slide rails 43 (model: EGH15SA2R1120ZOC), two first connecting blocks 48, two second connecting blocks 49, one rack 51 (model: LREGA2.0Z-940-K6-B150-WMC5), two blocking blocks 47, a first slider connecting plate 31, a second slider connecting plate 32, and three sensors 45 (model: EE-SX674).

[0036] The upper and lower mold brush assembly includes 2 spiral antistatic brushes 7, 4 rectangular antistatic brushes 12, 2 driven wheels 8 (connected to the spiral antistatic brushes 7 via a key), 2 drive wheels 21 (connected to the brush motors 19 via a key), 4 bearings 10 (model: B6001ZZ), 4 bearing limit plates 9, 4 bearing pressure plates 13, 2 brush motors 19 (model: MHMD082G1UA), 2 motor connecting plates 18, 2 synchronous belts 20 (model: GBN375EV5GT-150), 2 cam bearings 22 (model: CF6), 1 fixing plate 33, 2 front brush guard plates 5, 2 rear brush guard plates 4, and 2 brush bases. The system consists of: 3 plates, 4 brush side guards, 2 cylinders (model: CDQSB20-10DM-M9BV), 4 speed control valves (model: AS1201F-M5-06), 2 movable joints (model: FJR8-1.25-6), 2 joint connecting plates, 1 left side plate, 1 right side plate, 4 dust hoods, 1 sensor light shield, 2 ion guns, 2 ion gun tubes, 2 gun fixing plates, 2 support blocks, 4 gaskets, 2 light rods, 4 buffer pads, 4 linear bearings (model: LHFC16), and 4 linear bearing connecting plates.

[0037] In the slide rail moving assembly, the outer side of the left horizontal plate 50 is fixed with two locking sleeves 44, four reinforcing ribs 46, one first connecting block 48, and one second connecting block 49; the end of the left horizontal plate 50 is fixed with a blocking block 47; a set of linear slide rails 43 is installed on the upper part of the left horizontal plate 50, and a rack 51 is installed on the inner side; a first slider connecting plate 31 is installed on the linear slide rails 43.

[0038] Two locking sleeves 44, four reinforcing ribs 46, one first connecting block 48, and one second connecting block 49 are fixed to the outer side of the right horizontal plate 42; a blocking block 47 is fixed to the end of the right horizontal plate 42; a linear slide rail 43 is installed on the upper part of the right horizontal plate 42, and a rack 51 is installed on the inner side; a second slider connecting plate 32 is installed on the linear slide rail 43. Three sensors 45 are installed on the outer side of the right horizontal plate 42.

[0039] The upper and lower mold brush assemblies move back and forth via a gear and rack drive, mitigating the impact of high mold temperature on the conveying mechanism. The drive gear 27 (GEAKBB2.0-20-20-B-14N) is keyed to the gear shaft of the reducer 29 (60ZDF10K-400T1MHMF). The reducer and the conveyor motor 28 (MHMF042L1U2M) are threaded to the left connecting plate 1 of the upper and lower mold brush assemblies. The number of mold cleaning cycles is controlled by the machine's PLC. The drive gear 27 meshes with the rack 51 to drive the upper and lower mold brush assemblies back and forth.

[0040] In the upper and lower mold brush assembly, a left side plate 1 and a right side plate 2 are fixed to both sides of the fixing plate 33; the fixing plate 33 is positioned between the left horizontal plate 50 and the right horizontal plate 42. Two light rods 34 and four buffer pads 40 are spaced apart on the fixing plate 33. The left side plate 1 and the right side plate 2 are threadedly connected to the first slider connecting plate 31 and the second slider connecting plate 32 of the slide rail moving assembly, respectively. The left side plate 1 is threadedly connected to a reducer 29, and a gear 27 is connected to the shaft end of the reducer 29. The reducer flange is threadedly connected to a transmission motor 28. When the motor 28 moves under PLC control, it drives the gear 27 to move under the action of the rack 51 via the reducer 29, thus enabling the entire upper and lower mold brush assembly to move on the linear slide rail 43.

[0041] A sensor light-blocking plate 30 is threaded onto the right side plate 2. When the upper and lower mold brush assemblies move on the linear slide rail 43, the light-blocking plate 30 will trigger three spaced sensors 45 fixed on the right horizontal plate 42, which will provide a trigger signal to the machine tool PLC and provide feedback on the position of the upper and lower mold brush assemblies on the linear slide rail 43. The machine tool controls the movement position and reciprocating number of the upper and lower mold brush assemblies.

[0042] A front brush guard plate 5, a rear brush guard plate 4, a bottom brush plate 3, and two side brush guard plates 6 are interconnected and surround a brush fixing frame. The invention comprises two brush fixing frames: an upper mold brush fixing frame and a lower mold brush fixing frame. Between the two side brush guard plates 6 of each of the two brush fixing frames, a spiral antistatic brush 7 and two rectangular antistatic brushes 12 are arranged, with the two rectangular antistatic brushes 12 located on either side of the spiral antistatic brush 7.

[0043] Two cylinders 35 are mounted on the fixed plate 33. The piston rod end of one cylinder faces the upper mold, and the piston rod end of the other cylinder faces the lower mold. The piston rod ends of the cylinders 35 are threadedly connected to the movable joint 37, which is assembled with the joint connecting plate 38 with a clearance fit. The upward-facing joint connecting plate 38 is threadedly connected to the brush rear guard plate 4 of the upper mold brush fixing frame, and the downward-facing joint connecting plate 38 is threadedly connected to the brush rear guard plate 4 of the lower mold brush fixing frame. A pair of linear bearings 16 are mounted on each brush base plate 3. The smooth rod 34 cooperates with the linear bearings 16, and guides the movement direction of the brush so that the brush is perpendicular to the mold surface when it rises and falls.

[0044] The side guard plate 6 of the brush is equipped with a bearing 10, with the bearing hole and bearing 10 having a transition fit. The side guard plate 6 of the brush is also threadedly connected to the bearing limiting plate 9 and the bearing pressure plate 13. The rear guard plate 4 of the brush is threadedly connected to two dust hoods 14, one connector plate 38, one rectangular antistatic brush 12, and one motor fixing plate 18. The dust hoods 14 are connected to the workshop exhaust system through a dust suction pipe, providing a channel for mold impurities to be discharged externally and not scattered in the factory. The connector plate 38 is connected to the cylinder 35 through a movable connector 37, allowing the brush to move up and down under the drive of the cylinder. The motor fixing plate 18 is threadedly connected to the brush motor 19, and the brush motor shaft is keyed to the drive wheel 21. The drive wheel 21 and the driven wheel 8 are driven by a synchronous belt 20, which is tensioned by a cam bearing 22 on the motor fixing plate 18. The brush motor 19 drives the spiral antistatic brush 7 to rotate through the driven wheel 8, which plays a cleaning role when it comes into contact with the mold. The front of the brush The protective plate 5 is threadedly connected to two linear bearing connecting plates 15, one air gun fixing plate 24, one support block 17, and one rectangular anti-static brush 12. The linear bearing connecting plate 15 is threadedly connected to a linear bearing 16, which slides on the guide rod 34, guiding the brush's movement direction. The air gun fixing plate 24 is threadedly connected to an ion air gun 25, with the ion air gun tube 26 threadedly connected to it, allowing ion air to be blown from the tube onto the mold surface to eliminate static electricity from impurities, making it easier for impurities to detach from the mold surface and be discharged outside the factory along the dust collection hood. The spiral anti-static brush 7 is installed between the bearings 10, with its shaft end connected to a driven wheel 8 via a key. Driven by the brush motor 19, the spiral anti-static brush 7 rotates via the driven wheel 8. Since the upper and lower mold brush structures and workpiece connection methods are the same, the lower mold brush structure will not be described again.

[0045] When the integrated circuit molding cleaning mechanism of this invention is working, when the molding press opens the mold, the machine PLC controls the cleaning mechanism to start. The upper and lower mold brush assemblies move between the upper and lower molds on two sets of parallel linear slide rails 43 under the cooperation of the drive gear 27 and the rack 51. Two cylinders 35 drive the two brush fixing frames to move upward and downward respectively, so that the spiral antistatic brush and rectangular antistatic brush of the upper mold brush fixing frame contact the upper mold, and the spiral antistatic brush and rectangular antistatic brush of the lower mold brush fixing frame contact the lower mold. Driven by the brush motor 19, the brushes are applied to the upper and lower mold surfaces respectively. Impurities on the mold surface are sent to the dust hood 14 through the rotation direction of the spiral antistatic brush and are sucked away by the workshop exhaust system. The sensor photosensitive film triggers a signal to control the brush to brush the entire mold surface. After cleaning, the upper and lower mold brush assemblies return to the initial position to wait. The mold closes, completing the entire cleaning process. By adopting the integrated circuit molding clearing mechanism of the present invention, automatic mold clearing can be achieved with high efficiency and without polluting the workshop environment.

[0046] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or equivalent to the scope of this invention are included in this invention.

Claims

1. An integrated circuit molding clearing mechanism, characterized in that, include: Slide rail moving assembly and upper and lower mold brush assembly; The slide rail moving assembly is installed on both sides of the upper and lower molds; the slide rail moving assembly includes a linear slide rail (43); The upper and lower mold brush assembly is mounted on the slide rail moving assembly; the upper and lower mold brush assembly can slide along the linear slide rail between the upper and lower molds to remove overflow and dust on the upper and lower molds; The slide rail moving assembly includes a left horizontal plate (50), a right horizontal plate (42) and two sets of linear slide rails (43); the left horizontal plate (50) and the right horizontal plate (42) are arranged in parallel on the left and right sides of the upper and lower molds; the two sets of linear slide rails (43) are respectively arranged on the top of the left horizontal plate (50) and the right horizontal plate (42); The upper and lower mold brush assemblies are connected to the slide rail moving assembly via a gear and rack mechanism; the gear and rack mechanism includes a rack (51), a drive gear (27), a transmission motor (28), and a reducer (29); the rack (51) is installed on the inner side of the left horizontal plate (50) or the right horizontal plate (42); the transmission motor (28) is fixed on the upper and lower mold brush assemblies; the transmission motor (28) is connected to the drive gear (27) via the reducer (29), and the drive gear (27) meshes with the rack (51); The upper and lower mold brush assembly includes a fixed plate (33) located at the center; The fixed plate (33) is provided with two cylinders (35), one cylinder has the piston rod end facing the upper mold, and the other cylinder has the piston rod end facing the lower mold; the cylinder with the piston rod end facing the upper mold is connected to the upper mold brush fixing frame; the cylinder with the piston rod end facing the lower mold is connected to the lower mold brush fixing frame. Brush sets are fixed on both the upper mold brush fixing frame and the lower mold brush fixing frame; the brush set includes one spiral antistatic brush (7) and two rectangular antistatic brushes (12), with the two rectangular antistatic brushes (12) located on both sides of the spiral antistatic brush (7). Locking sleeves are provided on the outer sides of the left horizontal plate (50) and the right horizontal plate (42); the locking sleeves are installed on the corresponding guide pillars of the upper and lower molds; a number of reinforcing ribs are provided on the outer sides of the left horizontal plate (50) and the right horizontal plate (42); the ends of the left horizontal plate (50) and the right horizontal plate (42) are also provided with blocking blocks (47) for limiting the movement range of the upper and lower mold brush assemblies. The spiral antistatic brush (7) is connected to a driven wheel (8), which is connected to a driving wheel (21) via a synchronous belt (20); the driving wheel (21) is connected to a brush motor (19). An ion gun (25) and a dust collection hood (14) are fixed on both the upper mold brush fixing frame and the lower mold brush fixing frame.

2. The integrated circuit molding clearing mechanism according to claim 1, characterized in that, A first slider connecting plate (31) is installed on the linear slide rail (43) of the left horizontal plate (50); a second slider connecting plate (32) is installed on the linear slide rail (43) of the right horizontal plate (42). The fixed plate (33) has a left side plate (1) and a right side plate (2) fixed on both sides respectively; the fixed plate (33) is horizontally positioned between the left horizontal plate (50) and the right horizontal plate (42); the left side plate (1) and the right side plate (2) are respectively fixedly connected to the first slider connecting plate (31) and the second slider connecting plate (32).

3. The working method of the integrated circuit molding clearing mechanism, characterized in that, The integrated circuit molding clearing mechanism according to any one of claims 1 to 2 includes: When the molding press opens the mold, the integrated circuit molding and clearing mechanism is activated; The upper and lower mold brush assembly moves between the upper and lower molds on the linear slide rail (43); the brushes of the upper and lower mold brush assembly clean the upper and lower molds and remove the overflow and dust on the upper and lower molds; After cleaning, the upper and lower mold brush assemblies retract to their initial positions and wait for the mold to close, completing the entire mold cleaning process.

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