A brush mold structure for semiconductor packaging process

Abstract

The present invention discloses a brush mold structure for a semiconductor packaging process, comprising two brush mold units corresponding to an upper mold and a lower mold respectively, and a driving mechanism, wherein the output end of the driving mechanism is connected to a bracket for fixing the two brush mold units, the brush mold unit comprising a shell and a roller brush system, a soot blowing system and a dust suction system arranged in the shell, the roller brush system is used for brushing the upper mold and the lower mold, the soot blowing system is used for cleaning the dead corners of the upper mold and the lower mold, and the dust suction system is used for absorbing the dust blown up by the soot blowing system and the dust brushed off by the roller brush system; 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, thereby avoiding uncleaned dead corners, and further realizes the absorption of dust through the cooperation of the dust suction system and the shell, thereby reducing the dust escaping to the outside of the shell and achieving a better cleaning effect.

Description

Technical Field

[0001] The present 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 package 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 a semiconductor packaging process, which can at least solve one problem pointed out in the background art.

[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. The brush mold unit includes a housing and:

[0005] A roller brush system includes 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] The soot blowing unit includes 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. A clamp that matches the filter core plates is installed on the filter frame, 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 multiple filter core plates decrease in sequence, and the multiple filter core plates are spaced apart 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 portion and the lower portion, and the two plastic baffles are inclined downward;

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

[0015] Preferably, both ends of the brush barrel are connected with connecting barrels, and the housing is provided with bearings that cooperate with the connecting barrels so that the brush barrel 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 mounted on the output end of the motor, and a gear is also mounted on the connecting cylinder, and the two gears are meshed and connected;

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

[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 sootblowing port opening and closing control components correspond one to one with multiple groups of sootblowing ports;

[0021] The sootblowing port opening and closing control component includes:

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

[0023] Blocking block, cooperates 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 brush cylinder and is provided with a through groove that cooperates with the connecting piece;

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

[0027] The annular groove has a concave portion or a convex portion, and when the slider 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: 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 the occurrence of uncleaned dead corners. In addition, the dust is absorbed through the cooperation of the dust suction system and the shell, 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 structural diagram of multiple filter core plates of the present invention;

[0034] Figure 5 Schematic diagram of the internal structure of the brush barrel of the present invention;

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

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

[0037] Figure 8 Schematic diagram of the structure 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 embodiment of the present invention is described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0041] like Figures 1 to 8 As shown, an embodiment of the present invention provides a brush mold structure for a 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. The output end of the driving mechanism is connected to a bracket 8 for fixing the two brush mold units. The driving mechanism can be 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 mold brushing unit of this embodiment includes a housing 1 and a roller brush system, a soot blowing system, and a dust suction system arranged in the housing 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 to the connecting barrel 3, and the housing 1 is provided with a bearing that cooperates 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 . A gear 5 is also installed on the connecting cylinder 3 . The two gears 5 are meshed and connected. The motor 4 is fixedly mounted on the outer wall of the housing 1 .

[0046] The soot blowing system includes two soot blowing units. The soot blowing unit includes an air supply pipe 6 and multiple groups of soot blowing ports 7 opened on the brush cylinder 2. The air supply pipe 6 is used to deliver external gas into the brush cylinder 2. The air supply pipe 6 is connected to the external air source. The air supply pipe 6 is located in the connecting tube 3 and is fixed to the outer wall of the shell 1 through the 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 mounted on the bottom of the housing 1. 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. A clamp 10 is mounted on the filter frame and matches the filter core plates 11. 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 multiple filter core plates 11 decrease in sequence, and the multiple filter core plates 11 are spaced apart 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. The air containing dust needs to pass through the filter partition before it can enter the dust collection interface 22.

[0051] In addition, two plastic baffles 14 are provided at the junction of the upper and lower parts, 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 and lower parts to prevent dust from returning to the upper part. During operation, under the action of suction, the two plastic baffles 14 move downward, and a gap is formed between the two, so that the dust collection operation can be completed;

[0052] In addition, 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 toward the interior 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 sootblowing port opening and closing control assembly includes a runner 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 brush cylinder, and a through groove is opened on it to cooperate with the connecting piece 17;

[0056] The connecting member 17 is used to connect the block 16 and the runner 15. Specifically, the runner 15 is provided with an annular groove 21. An annular groove 20 is provided on both sides of the annular groove 21. A slider 19 is slidably provided 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 recess 24 , when the slider 19 moves to the recess 24 , the block 16 contracts inward, and gas is ejected from the sootblowing 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. Under the influence of the block 16, the gas will be ejected toward the brush on the brush cylinder 2, and eventually it 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 present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0061] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods 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 includes 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; The soot blowing unit includes an air supply pipe and a plurality of soot blowing ports opened on the brush barrel, and the air supply pipe is used to send external gas into the brush barrel; A plurality of soot blowing port opening and closing control components are installed on the part of the air supply pipe extending into the brush cylinder. 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, thereby reducing the escape of dust; Multiple sootblowing port opening and closing control components correspond one to one with multiple groups of sootblowing ports; The sootblowing port opening and closing control component includes: A runner is fixedly connected to the air supply pipe; Blocking block, cooperates 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 brush cylinder and is provided with a through groove that cooperates with the connecting piece; The rotating wheel is provided with an annular groove, an annular groove is provided on both sides of the annular groove, a slider is slidably provided in each annular groove, the two sliders are connected by a connecting rod, and the connecting member is hinged on the connecting rod; The annular groove has a concave portion or a convex portion, and when the slider moves to the convex portion or the concave portion, the block is separated from the soot blowing port; When the annular groove has a concave portion, when the slider moves to the concave portion, the block contracts inwards, and gas is ejected from the soot blowing port onto the upper die or lower die; When the annular groove has a convex portion, when the slider moves to the convex portion, the block extends outward, and the outer diameter of the connecting piece is smaller than the outer diameter of the block, so the gas is ejected outward through the gap between the connecting piece and the soot blowing port. Affected by the blockage, the gas will be ejected toward the brush on the brush barrel, and eventually it can be blown onto the upper mold or the lower mold to complete the dust cleaning work.

2. A brush mold structure for semiconductor packaging process according to 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 mounted on the filter frame, and there is a gap between two adjacent clamps.

3. A brush mold structure for semiconductor packaging process according to claim 2, characterized in that: 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, and the widths of the plurality of filter core plates decrease in sequence, and the plurality of filter core plates are spaced apart from the inner wall of the housing. 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 according to claim 3, characterized in that: Two plastic baffles are provided 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 comb-tooth shaped, and the comb-tooth shaped ends of the two plastic baffles are staggered with each other.

5. The brush mold structure for semiconductor packaging process according to claim 1, characterized in that: Both ends of the brush cylinder are connected to 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 according to 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 housing.

7. The brush mold structure for semiconductor packaging process according to claim 1, characterized in that: The slider is a roller or a ball.

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