Cutting and metering mechanism for flaky resin

Abstract

The utility model discloses a cutting and metering mechanism for flaky resin, which comprises a bottom plate, a control unit, a cutting unit, an image acquisition unit positioned above the bottom plate, and two guide columns which are close to one end of the bottom plate and are symmetrically arranged, a flaky resin material roll is close to one end of the bottom plate, and the guide columns are positioned between the flaky resin material roll and the bottom plate. The material head of the flaky resin faces the bottom plate, and the bottom surface of the flaky resin material roll is flush with the top surface of the bottom plate; the image acquisition unit is used for performing image acquisition on the flaky resin below the image acquisition unit and transmitting an image to the control unit; and the control unit is used for calculating the cutting length of the flaky resin under the current image acquisition unit and controlling the cutting unit to cut. According to the cutting and metering mechanism, the image acquisition unit, the control unit and the cutting unit are arranged, so that the metering precision of the cutting length when the flaky resin is cut can be effectively improved, and the flaky resin can be applied to a process with a high quality precision requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of semiconductor packaging, and in particular relates to a cutting and metering mechanism for sheet resin. Background Art

[0002] The cost of sheet resin is low and can effectively reduce the cost of semiconductor plastic packaging, but there is currently no mature application of sheet resin in the semiconductor industry. This is because in the mold compression molding process using sheet resin, it is necessary to accurately cut the resin according to the required area, but there is currently no mechanism for accurately measuring the width of the target sheet resin required in the process of cutting the sheet resin into strips; and some other existing trimming or cutting mechanisms can trim or cut sheet resin, but the measurement accuracy of the size of the cut sheet resin is low, and it is impossible to achieve accurate measurement, resulting in the inability to achieve stable automated production of sheet resin in the semiconductor industry. Utility Model Content

[0003] In view of this, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a cutting and metering mechanism for sheet resin.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cutting and metering mechanism for sheet resin comprises a base plate, a control unit, a cutting unit, an image acquisition unit located above the base plate, and two guide posts symmetrically arranged near one end of the base plate, a sheet resin roll near one end of the base plate, the guide posts located between the sheet resin roll and the base plate, a head of the sheet resin facing the base plate and the bottom surface of the sheet resin roll flush with the top surface of the base plate; the image acquisition unit is used to acquire an image of the sheet resin thereunder and transmit the image to the control unit, and the control unit is used to calculate the cutting length of the sheet resin under the current image acquisition unit and control the cutting unit to perform cutting.

[0006] According to some preferred implementation aspects of the utility model, it also includes two waste reels respectively located above and below the bottom plate, and the two waste reels are respectively used to wind up the protective films on the top and bottom surfaces of the sheet-like resin.

[0007] According to some preferred implementation aspects of the utility model, the base plate includes a first portion and a second portion, a gap is provided between the first portion and the second portion, the second portion is located between the guide column and the first portion, and the image acquisition unit is close to the first portion.

[0008] According to some preferred implementation aspects of the utility model, the first part includes two first fixing plates disposed at intervals, the second part includes two second fixing plates disposed at intervals, and the distance between the two first fixing plates is equal to the distance between the two second fixing plates.

[0009] According to some preferred implementation aspects of the present invention, the width of the sheet-like resin is greater than the distance between the two first fixing plates and less than the distance between the sides of the two first fixing plates and / or the second fixing plates that are away from each other.

[0010] According to some preferred implementation aspects of the utility model, the cutting unit comprises a blade, and during cutting, the blade is located above or below the gap.

[0011] According to some preferred implementation aspects of the utility model, the two guide posts are located in the same vertical direction, and the distance from one guide post to the top surface of the sheet-like resin is equal to the distance from the other guide post to the bottom surface of the sheet-like resin.

[0012] According to some preferred implementation aspects of the utility model, a waste reel located on the same side of the sheet resin is located above or below a corresponding guide post.

[0013] According to some preferred implementation aspects of the utility model, the surface of the guide column is in contact with the protective film wound on one of the waste reels close to it. The setting of the guide column can limit the position where the protective film on the upper and lower surfaces of the sheet resin is separated from the sheet resin, avoiding the protective film on the upper and lower surfaces of the sheet resin from being separated from the sheet resin between the protective films too early, and can better protect the sheet resin.

[0014] According to some preferred implementation aspects of the utility model, it further includes a traction unit, and the traction unit is used to pull the head of the sheet-like resin roll into the bottom plate.

[0015] Due to the adoption of the above technical scheme, compared with the prior art, the utility model is a cutting and metering mechanism for sheet resin, which can clearly capture the image of the sheet resin in the target area by setting an image acquisition unit, a control unit and a cutting unit, and then use the control unit to calculate the area of ​​the acquired image to accurately obtain the cutting length, thereby controlling the cutting unit to cut according to the calculated cutting length, which can effectively improve the accuracy of measuring the cutting length when cutting the sheet resin, so that the sheet resin can be used in processes with high quality precision requirements to expand its application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the cutting and metering mechanism in the preferred embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the cutting and metering mechanism in the preferred embodiment of the utility model;

[0019] Wherein, the accompanying drawings are marked as follows:

[0020] First part-1, first fixing plate-11, second part-2, second fixing plate-21, image acquisition unit-3, cutting unit-4, blade-41, waste reel-5, guide column-6, sheet resin reel-7, sheet resin-71, protective film-72. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0022] Reference Figure 1 and Figure 2 A cutting and metering mechanism for sheet resin in this embodiment includes a base plate, a control unit, a cutting unit 4, a traction unit, an image acquisition unit 3 located above the base plate, two guide columns 6 symmetrically arranged near one end of the base plate, and two waste reels 5 located above and below the base plate respectively. A sheet resin roll 7 is near one end of the base plate, and the guide column 6 is located between the sheet resin roll 7 and the base plate; the head of the sheet resin 71 faces the base plate and the bottom surface of the sheet resin roll 7 is flush with the top surface of the base plate, so that the traction unit can pull the head of the sheet resin roll 7 into the base plate.

[0023] Furthermore, the base plate includes a first part 1 and a second part 2, and there is a gap between the first part 1 and the second part 2. In this embodiment, the blade 41 of the cutting unit 4 is located below the gap. In the process of rotating the blade 41 to cut the sheet resin 71, when the blade 41 is rotated to be perpendicular to the length direction of the base plate, the top of the blade 41 is located above the top surface of the sheet resin 71 transmitted on the base plate.

[0024] Specifically, the second part 2 of the base plate is located between the guide column 6 and the first part 1, the image acquisition unit 3 is close to the first part 1, the first part 1 includes two first fixing plates 11 arranged at intervals, the second part 2 includes two second fixing plates 21 arranged at intervals, the distance between the two first fixing plates 11 is equal to the distance between the two second fixing plates 21, and the width of the sheet resin 71 is greater than the distance between the two first fixing plates 11 and less than the distance between the sides of the two first fixing plates 11 and / or the second fixing plates 21 that are away from each other, ensuring that the sheet resin 71 can be laid on the base plate without falling from the gap between the first fixing plates 11 or the second fixing plates 21.

[0025] Furthermore, the two guide posts 6 are symmetrically arranged about the sheet resin 71 laid on the bottom plate and are located in the same vertical direction, and the distance from one guide post 6 to the top surface of the sheet resin 71 is equal to the distance from the other guide post 6 to the bottom surface of the sheet resin 71. Above the top surface of the sheet resin 71, a waste reel 5 on the same side is located obliquely above one guide post 6; below the bottom surface of the sheet resin 71, a waste reel 5 on the same side is located obliquely below one guide post 6; the two waste reels 5 are used to wind up the protective film 72 on the top and bottom surfaces of the sheet resin 71 pulled out by the sheet resin roll 7, respectively.

[0026] Compared with the waste reel 5, the guide column 6 is closer to the sheet resin material roll 7, and the surface of the guide column 6 is in contact with the protective film 72 wound on a waste reel 5 close to it, so that the protective film 72 on the upper and lower surfaces of the sheet resin 71 can be limited to the position where the protective film 72 is separated from the sheet resin 71, thereby avoiding the protective film 72 on the upper and lower surfaces of the sheet resin 71 from being separated from the sheet resin 71 between the protective films 72 too early, and better protecting the sheet resin 71.

[0027] Furthermore, the image acquisition unit 3 of this embodiment is used to acquire an image of the sheet-like resin 71 thereunder and transmit the image to the control unit. When acquiring an image, the image acquisition unit 3 scans the sheet-like resin 71 thereunder and transmits the image to the control unit to calculate the surface area of ​​the scanned sheet-like resin 71. The specific methods include the following two methods:

[0028] (1) The sheet resin 71 of theoretical length is pulled at one time, and then the image acquisition unit 3 scans the image of the sheet resin 71 within the theoretical length range, and then transmits it to the control unit to accurately calculate the actual area of ​​the sheet resin 71 within the theoretical length range, thereby determining the precise cutting length.

[0029] (2) The image acquisition unit 3 scans the length of the sheet resin 71 in each pixel unit column and transmits the image to the control unit to sum the unit area occupied by it until the required area is reached, and then determine the cutting length.

[0030] The working process of the cutting and metering mechanism for sheet resin of the utility model is as follows:

[0031] The sheet resin roll 7 is manually placed on the reel of the machine, and the upper and lower protective films 72 are peeled off and fixed on the upper and lower waste reels 5 respectively; the traction unit pulls the head of the sheet resin roll 7 forward to the area below the image acquisition unit 3 and starts scanning and transmits the scanned image to the control unit, which accurately calculates the cutting length and controls the cutting unit 4 to move to the precise cutting position to cut the sheet resin 71; and then the cut sheet resin 71 is transported to the mold for molding.

[0032] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A cutting and metering mechanism for sheet resin, characterized in that: The invention comprises a base plate, a control unit, a cutting unit, an image acquisition unit located above the base plate, and two guide columns symmetrically arranged near one end of the base plate, wherein a sheet resin roll is near one end of the base plate, and the guide columns are located between the sheet resin roll and the base plate, wherein the head of the sheet resin faces the base plate and the bottom surface of the sheet resin roll is flush with the top surface of the base plate; the image acquisition unit is used for acquiring an image of the sheet resin thereunder and transmitting the image to the control unit, and the control unit is used for calculating the cutting length of the sheet resin under the current image acquisition unit and controlling the cutting unit to perform cutting.

2. The cutting metering mechanism according to claim 1, characterized in that: It also includes two waste reels respectively located above and below the bottom plate, and the two waste reels are respectively used to wind up the protective films on the top and bottom surfaces of the sheet-like resin.

3. The cutting metering mechanism according to claim 1, characterized in that: The bottom plate includes a first portion and a second portion, a gap is provided between the first portion and the second portion, the second portion is located between the guide column and the first portion, and the image acquisition unit is close to the first portion.

4. The cutting metering mechanism according to claim 3, characterized in that: The first part includes two first fixing plates arranged at intervals, and the second part includes two second fixing plates arranged at intervals, and the distance between the two first fixing plates is equal to the distance between the two second fixing plates.

5. The cutting metering mechanism according to claim 4, characterized in that: The width of the sheet-like resin is greater than the distance between the two first fixing plates and less than the distance between the sides of the two first fixing plates and / or the second fixing plates that are away from each other.

6. The cutting metering mechanism according to claim 3, characterized in that: The cutting unit comprises a blade, and during cutting, the blade is located above or below the gap.

7. The cutting metering mechanism according to claim 1, characterized in that: The two guide posts are located in the same vertical direction, and the distance from one guide post to the top surface of the sheet-like resin is equal to the distance from the other guide post to the bottom surface of the sheet-like resin.

8. The cutting metering mechanism according to claim 2, characterized in that: One of the waste reels located on the same side of the sheet-like resin is located above or below a corresponding one of the guide posts.

9. The cutting metering mechanism according to claim 8, characterized in that: The surface of the guide post is in contact with the protective film wound on one of the waste reels adjacent to the guide post.

10. The cutting metering mechanism according to claim 1, characterized in that: It also includes a traction unit, which is used to pull the head of the sheet-like resin roll into the bottom plate.

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