Brush mold structure for semiconductor packaging process

Abstract

The invention discloses a mold brushing structure for a semiconductor packaging process, which comprises two mold brushing units respectively corresponding to an upper mold and a lower mold and a driving mechanism, and the output end of the driving mechanism is connected with a bracket for fixing the two mold brushing units. The mold brushing unit comprises a shell as well as a rolling brush system, a soot blowing system and a dust collection system which are arranged in the shell, the rolling brush system is used for brushing the upper mold and the lower mold, the soot blowing system is used for cleaning dead angle positions of the upper mold and the lower mold, and the dust collection system is used for absorbing dust blown by the soot blowing system and dust brushed by the rolling brush system; through the rolling brush system and the soot blowing system, dust cleaning of the upper mold and the lower mold can be completed, uncleaned dead corners are avoided, in addition, dust absorption is achieved through cooperation of the dust absorption system and the shell, dust escaping out of the shell is reduced, and the cleaning effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor mold cleaning, and in particular to a brush mold structure used in a semiconductor packaging process. Background Art

[0002] In the semiconductor packaging process, the mold needs to be cleaned after each packaging is completed. The existing technology mostly uses a manual handheld air gun to spray the upper and lower molds. First, manual operation has the problem of incomplete cleaning. Second, direct blowing can easily cause dust to fly, affecting the health of the operator. In addition, the flying dust will fall on the lower mold, resulting in poor cleaning effect. Summary of the invention

[0003] The present invention provides a brush mold structure for semiconductor packaging process, which can at least solve one problem pointed out in the background technology.

[0004] A brush mold structure for a semiconductor packaging process includes two brush mold units corresponding to an upper mold and a lower mold respectively and a driving mechanism for driving the two brush mold units to move, wherein the brush mold unit includes a housing and:

[0005] A roller brush system, comprising two brush cylinders and a driving mechanism for driving the two brush cylinders to rotate;

[0006] a sootblowing system, comprising two sootblowing units; and

[0007] A dust collection system is located between the two brush cylinders;

[0008] Wherein, the soot blowing unit comprises an air supply pipe and a plurality of soot blowing ports opened on the brush barrel, and the air supply pipe is used to deliver external gas into the brush barrel.

[0009] The dust collection system includes a filter unit and a dust collection interface installed at the bottom of the housing;

[0010] The filter unit includes a filter frame and a plurality of filter core plates, and a clamp matching the filter core plate is installed on the filter plate, and there is a gap between two adjacent clamps;

[0011] Preferably, the internal space of the housing is divided into an upper portion for accommodating the roller brush system and a lower portion for accommodating the dust collection system, the lower portion is contracted, the widths of the plurality of filter core plates decrease in sequence, and the plurality of filter core plates are spaced from the inner wall of the housing;

[0012] The bottom of the filter frame is provided with two inclined support seats, on which filter screens are installed.

[0013] Preferably, two plastic baffles are provided at the junction of the upper part and the lower part, and the two plastic baffles are inclined downward;

[0014] The ends of the two plastic baffles are both in a comb-tooth shape, and the comb-tooth-shaped ends of the two plastic baffles are staggered with each other.

[0015] Preferably, both ends of the brush cylinder are connected with connecting cylinders, and the housing is provided with bearings that cooperate with the connecting cylinders, so that the brush cylinder can rotate on the housing;

[0016] The air supply pipe is connected to an external air source, is located in the connecting tube, and is fixed to the outer wall of the shell through a bracket.

[0017] Preferably, the driving mechanism includes a motor and a gear installed at the output end of the motor, and a gear is also installed on the connecting cylinder, and the two gears are meshed and connected;

[0018] The motor is fixedly mounted on the outer wall of the shell.

[0019] Preferably, a plurality of soot blowing port opening and closing control components are installed on the portion of the air supply pipe extending into the brush cylinder;

[0020] Multiple soot blowing port opening and closing control components correspond one to one with multiple groups of soot blowing ports;

[0021] The soot blowing port opening and closing control component comprises:

[0022] A runner is fixedly connected to the air supply pipe;

[0023] Blocking block, cooperate with the soot blowing port;

[0024] A connecting piece for connecting the block and the runner; and

[0025] The limiting sleeve is fixedly mounted on the inner wall of the screen drum and is provided with a through slot that matches the connecting piece;

[0026] The rotating wheel is provided with an annular groove, annular grooves are provided on both sides of the annular groove, a slider is slidably arranged in each annular groove, the two sliders are connected by a connecting rod, and the connecting piece is hinged on the connecting rod;

[0027] The annular groove has a concave portion or a convex portion, and when the sliding block moves to the convex portion or the concave portion, the blocking block is separated from the soot blowing port.

[0028] Preferably, the slider is a roller or a ball.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can complete the dust cleaning of the upper mold and the lower mold through the roller brush system and the soot blowing system, avoiding unclean dead corners, and also realizes dust absorption through the cooperation of the dust suction system and the shell, thereby reducing the dust escaping to the outside of the shell, and the cleaning effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the filter unit of the present invention;

[0032] Figure 3 For the present invention Figure 1 A local enlarged view of point A;

[0033] Figure 4 It is a schematic diagram of the structure of multiple filter core plates of the present invention;

[0034] Figure 5 It is a schematic diagram of the internal structure of the brush cylinder of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the sootblowing port opening and closing control assembly of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of an annular groove with a convex portion;

[0037] Figure 8 It is a schematic structural diagram of an annular groove with a groove.

[0038] Description of reference numerals:

[0039] 1-housing, 2-brush cylinder, 3-connecting cylinder, 4-motor, 5-gear, 6-air supply pipe, 7-blowing port, 8-bracket, 9-filter frame, 10-clamp, 11-filter core plate, 12-support seat, 13-filter screen, 14-plastic baffle, 15-rotor, 16-block, 17-connecting piece, 18-limiting sleeve, 19-slider, 20-annular groove, 21-annular groove, 22-dust suction interface, 23-convex part, 24-concave part. DETAILED DESCRIPTION

[0040] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0041] like Figures 1 to 8 As shown, a brush mold structure for a semiconductor packaging process provided by an embodiment of the present invention comprises two brush mold units corresponding to an upper mold and a lower mold respectively and a driving mechanism for driving the two brush mold units to move, the output end of the driving mechanism is connected to a bracket 8 for fixing the two brush mold units, and the driving mechanism can use an air cylinder or an oil cylinder, thereby driving the two brush mold units to move on the upper mold and the lower mold to complete the cleaning work;

[0042] The brushing unit of this embodiment includes a shell 1 and a roller brush system, a soot blowing system and a dust suction system arranged in the shell 1. The roller brush system is used to brush the upper mold and the lower mold, the soot blowing system is used to clean the dead corners of the upper mold and the lower mold, and the dust suction system is used to absorb the dust blown by the soot blowing system and the dust brushed by the roller brush system.

[0043] Specifically, the roller brush system includes two brush cylinders 2 and a driving mechanism for driving the two brush cylinders 2 to rotate;

[0044] The two ends of the brush barrel 2 are connected with connecting barrels 3, and the housing 1 is provided with bearings that cooperate with the connecting barrel 3 so that the brush barrel 2 can rotate on the housing 1;

[0045] The driving mechanism includes a motor 4 and a gear 5 installed at the output end of the motor 4 . The connecting tube 3 is also installed with a gear 5 . The two gears 5 are meshed and connected. The motor 4 is fixedly installed on the outer wall of the housing 1 .

[0046] The sootblowing system includes two sootblowing units, each of which includes an air supply pipe 6 and a plurality of sootblowing ports 7 opened on the brush barrel 2. The air supply pipe 6 is used to deliver external gas into the brush barrel 2. The air supply pipe 6 is connected to an external gas source. The air supply pipe 6 is located in the connecting barrel 3 and is fixed to the outer wall of the shell 1 by a bracket 8.

[0047] The dust collection system is located between the two brush cylinders 2, and includes a filter unit and a dust collection interface 22 installed at the bottom of the housing 1, and the dust collection interface 22 is connected to an external dust collection device;

[0048] The filter unit includes a filter frame 9 and a plurality of filter core plates 11, on which a clamp 10 matching the filter core plates 11 is installed, and there is a gap between two adjacent clamps 10;

[0049] The internal space of the housing 1 is divided into an upper portion for accommodating the roller brush system and a lower portion for accommodating the dust collection system. The lower portion is contracted, and the widths of the plurality of filter core plates 11 decrease in sequence, and the plurality of filter core plates 11 are spaced from the inner wall of the housing 1.

[0050] The bottom of the filter frame 9 has two inclined support seats 12, on which filter screens 13 are installed. The filter screens 13 on the two support seats 12 and the filter core plate 11 closest to the support seats 12 form a filter partition, and the air containing dust needs to pass through the filter partition before it can enter the dust suction interface 22;

[0051] In addition, two plastic baffles 14 are arranged at the junction of the upper part and the lower part, and the two plastic baffles 14 are inclined downward, and the ends of the two plastic baffles 14 are comb-shaped, and the comb-shaped ends of the two plastic baffles 14 are staggered with each other. In the initial state, the two plastic baffles 14 complete the separation of the upper part and the lower part to prevent dust from returning to the upper part. When working, under the action of suction, the two plastic baffles 14 move downward, and a gap is generated between the two, so that the dust collection operation can be completed;

[0052] In addition, in order to prevent the soot blowing system from blowing outward, a plurality of soot blowing port opening and closing control components are installed on the part of the air supply pipe 6 extending into the brush cylinder 2. Under the action of the soot blowing port opening and closing control components, both soot blowing systems blow air toward the inside of the shell 1, thereby reducing the escape of dust;

[0053] Specifically, the multiple soot blowing port opening and closing control components correspond one to one with the multiple groups of soot blowing ports 7;

[0054] The soot blowing port opening and closing control assembly includes a rotating wheel 15, a blocking block 16, a connecting piece 17 and a limiting sleeve 18;

[0055] The runner 15 is fixedly connected to the air supply pipe 6, the blocking block 16 cooperates with the soot blowing port 7, and the limiting sleeve 18 is fixedly installed on the inner wall of the screen cylinder, and a through groove that cooperates with the connecting piece 17 is opened on it;

[0056] The connecting member 17 is used to connect the block 16 and the rotating wheel 15. Specifically, the rotating wheel 15 is provided with an annular groove 21, and an annular groove 20 is provided on both sides of the annular groove 21. A slider 19 is slidably arranged in each of the annular grooves 20. The slider 19 is a roller or a ball. The two sliders 19 are connected by a connecting rod, and the connecting member 17 is hinged on the connecting rod.

[0057] The annular groove 20 has a concave portion 24 or a convex portion 23. When the slider 19 moves to the convex portion 23 or the concave portion 24, the blocking block 16 is separated from the soot blowing port 7.

[0058] Specifically, if the annular groove 20 has a concave portion 24, when the slider 19 moves to the concave portion 24, the block 16 contracts inwardly, and the gas is ejected from the soot blowing port 7 onto the upper die or the lower die;

[0059] If the annular groove 20 has a convex portion 23, when the slider 19 moves to the convex portion 23, the block 16 extends outward, and the outer diameter of the connecting piece 17 is smaller than the outer diameter of the block 16. Therefore, the gas is ejected outward through the gap between the connecting piece 17 and the soot blowing port 7. Affected by the block 16, the gas will be ejected toward the brush on the brush barrel 2, and finally can be blown onto the upper mold or the lower mold to complete the dust cleaning work.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit and essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0061] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A brush mold structure for semiconductor packaging process, comprising two brush mold units corresponding to an upper mold and a lower mold respectively and a driving mechanism for driving the two brush mold units to move, characterized in that: The brush mold unit includes a shell and: A roller brush system, comprising two brush cylinders and a driving mechanism for driving the two brush cylinders to rotate; a sootblowing system, comprising two sootblowing units; and A dust collection system is located between the two brush cylinders; Wherein, the soot blowing unit comprises an air supply pipe and a plurality of soot blowing ports opened on the brush barrel, and the air supply pipe is used to deliver external gas into the brush barrel.

2. A brush mold structure for semiconductor packaging process as claimed in claim 1, characterized in that: The dust collection system includes a filter unit and a dust collection interface installed at the bottom of the housing; The filter unit comprises a filter frame and a plurality of filter core plates. A clamp matching the filter core plates is installed on the filter plate, and there is a gap between two adjacent clamps.

3. A brush mold structure for semiconductor packaging process as claimed in claim 2, characterized in that: The inner space of the shell is divided into an upper part for accommodating the roller brush system and a lower part for accommodating the dust collection system, the lower part is contracted, the widths of the plurality of filter core plates decrease in sequence, and the plurality of filter core plates are spaced from the inner wall of the shell; The bottom of the filter frame is provided with two inclined support seats, on which filter screens are installed.

4. A brush mold structure for semiconductor packaging process as claimed in claim 3, characterized in that: Two plastic baffles are arranged at the junction of the upper part and the lower part, and the two plastic baffles are inclined downward; The ends of the two plastic baffles are both in a comb-tooth shape, and the comb-tooth-shaped ends of the two plastic baffles are staggered with each other.

5. A brush mold structure for semiconductor packaging process as claimed in claim 1, characterized in that: Both ends of the brush cylinder are connected with connecting cylinders, and the housing is provided with bearings that cooperate with the connecting cylinders so that the brush cylinder can rotate on the housing; The air supply pipe is connected to an external air source, is located in the connecting tube, and is fixed to the outer wall of the shell through a bracket.

6. A brush mold structure for semiconductor packaging process as claimed in claim 5, characterized in that: The driving mechanism includes a motor and a gear installed at the output end of the motor, and a gear is also installed on the connecting cylinder, and the two gears are meshed and connected; The motor is fixedly mounted on the outer wall of the shell.

7. A brush mold structure for semiconductor packaging process as claimed in claim 1, characterized in that: A plurality of soot blowing port opening and closing control components are installed on the portion of the air supply pipe extending into the brush cylinder; Multiple soot blowing port opening and closing control components correspond one to one with multiple groups of soot blowing ports; The soot blowing port opening and closing control component comprises: A runner, fixedly connected to the air supply pipe; Blocking block, cooperate with the soot blowing port; A connecting piece for connecting the block and the runner; and The limiting sleeve is fixedly mounted on the inner wall of the screen drum and is provided with a through slot that matches the connecting piece; The rotating wheel is provided with an annular groove, annular grooves are provided on both sides of the annular groove, a slider is slidably arranged in each annular groove, the two sliders are connected by a connecting rod, and the connecting piece is hinged on the connecting rod; The annular groove has a concave portion or a convex portion, and when the sliding block moves to the convex portion or the concave portion, the blocking block is separated from the soot blowing port.

8. A brush mold structure for semiconductor packaging process as claimed in claim 7, characterized in that: The slider is a roller or a ball.

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