TWI808702B - Partial film peeling structure (3) - Google Patents

Abstract

A partial film peeling structure comprises an upper bracket, and the upper bracket is connected with a machine rack, and the upper bracket has a front end provided with a first detector to detect a thin plate. The upper bracket has a bottom provided with a plurality of spaced and juxtaposed upper friction blocks, and one upper friction block has a rear end that has a bottom provided with a first arc convex portion. The upper bracket has a rear end connected with a first upper air blowing unit, and the first upper air blowing unit is located above a rear conveying section, so as to blow air toward the downward direction of the first arc convex portion. The first driving member has one end connected with the upper bracket for moving the plurality of upper friction blocks upwardly and downwardly, thereby the first arc convex portion of the plurality of upper friction blocks presses downwardly an upper surface of the thin plate respectively when the thin plate is transported backwardly from a front conveying section through a rear conveying section, so as to peel off a front edge of an upper film of the thin plate upwardly.

Description

Partial Thin Film Peeled Structure (3)

The invention relates to a partial film peeling structure, especially a device that can peel off the front edge of the film smoothly and effectively.

In the manufacturing process of printed circuit boards, before the substrate is exposed, a photoresist layer and a thin film adhered to the surface of the photoresist layer are formed on the upper and lower surfaces of the substrate. After exposure, the film is peeled off to expose the photoresist layer for subsequent development and etching procedures. The way of peeling the film of the existing film peeling machine is mainly to use a front conveying section to convey the thin plate such as the above-mentioned printed circuit board, so that it moves along the conveying direction from front to back. The thin plate is blocked and positioned by a blocking unit, and then rolled on the surface of the film by a set of embossing wheels.

With the above film stripping machine structure, the efficiency of stripping the film can indeed be improved. However, in the actual process of peeling off the film, it was found that since the thickness of the substrate itself is not large, it is easy to have unevenness. When a long straight cylindrical adhesive wheel with the same outer diameter sticks the film, the adhesive force of each sticking position is not exactly the same, and the film cannot be peeled off smoothly and comprehensively. Moreover, because the film is very thin and fragile, after the film is peeled off, some film chips will still adhere to the surface of the photoresist layer, and often cannot be detected because the area of the film chip is too small. This will result in the substrate being scrapped throughout the PCB manufacturing process. Therefore, at present, there are those who use different models to separate the front edge peeling of the film and the subsequent complete film peeling, so as to make the construction more professional and improve the output quality of the film peeling operation through an effective division of labor.

In view of this, in order to provide a structure different from the conventional technology and improve the above-mentioned shortcomings, the author has accumulated many years of experience and continuous research and development, so this creation is produced.

One purpose of this creation is to provide a partial film peeling structure, so as to solve the problem that in the film peeling process of a conventional film peeling machine, a set of embossing wheels need to be rolled on the film surface, and then a set of adhesive wheels are used to gradually peel off the wrinkled film at the front edge, and because the adhesive force of each position of the straight cylindrical adhesive wheel is different, the front edge of the film cannot be peeled off smoothly. The surface of the thin plate is pressed, and the blowing unit is used to blow air at the same time, so as to peel off the structure of the front edge of the film, so that the front edge of the film can be separated from the substrate smoothly and effectively, which is beneficial to the subsequent overall film peeling operation.

In order to achieve the purpose of the above creation, part of the film peeling structure set up in this creation is connected to a frame. The front end of the frame has a front conveying section for conveying a thin plate to move along the conveying direction from the front end to the rear end, and then conveyed backward through a rear conveying section to peel off the upper film on the upper surface of the substrate of the thin plate. Wherein the upper bracket is connected to the frame, and the front end of the upper bracket has a first detector for detecting the thin plate; the bottom of the upper bracket has a plurality of spaced and juxtaposed upper friction blocks, and the rear end bottom of any upper friction block has a first arc protrusion, and the bottom surface of the upper friction block extends upwards with the first arc protrusion toward the front end of the upper friction block; One end of the driving member is connected with the upper bracket for moving up and down a plurality of upper friction blocks.

During implementation, the bottom surface of the upper bracket has a first upper extension and a second upper extension. The rear ends of the plurality of upper friction blocks pass through a first support rod, one end of the first support rod is connected to the first upper extension, and the other end of the first support rod is connected to the second upper extension.

During implementation, the rear ends of the plurality of upper friction blocks have a perforation for passing through the first pole, and there is an annular space between the inner periphery of the perforation and the outer periphery of the first pole for the rear ends of the plurality of upper friction blocks to move up and down relative to the first pole.

During implementation, the first upper blowing unit has a first upper blowing port, and the first upper blowing port is located in the middle of the rear end of the upper bracket.

During implementation, the invention further includes a second upper air blowing unit, which is connected to the front end of the upper bracket and positioned above the front conveying section for blowing air toward the direction below the upper friction block.

When implemented, the invention further includes a second detector, which is located at the rear end of the upper support for detecting thin plates.

During implementation, the invention further includes a lower bracket, a first lower air blowing unit and a second driving member. The lower bracket is connected to the frame, and the top of the lower bracket is provided with a plurality of spaced and juxtaposed lower friction blocks. The bottom of the rear end of the lower friction block has a second arc convex portion. One end of the second driving member is connected to the upper bracket for moving the plurality of lower friction blocks up and down.

During implementation, the top surface of the lower bracket has a first lower extension and a second lower extension. The rear ends of the plurality of lower friction blocks pass through a second support rod. One end of the second support rod is connected to the first lower extension, and the other end of the second support rod is connected to the second lower extension. The front ends of the plurality of lower friction blocks pass through a second pivot.

During implementation, the first lower blowing unit has a first lower blowing port, and the first lower blowing port is located in the middle of the rear end of the lower bracket.

During implementation, the invention further includes a second lower air blowing unit, which is connected to the front end of the lower bracket and is located below the front conveying section for blowing air toward the direction above the lower friction block.

In order to further understand this creation, the following is a preferred embodiment, with the diagram and figure number, the specific composition and effect of this creation are described in detail as follows:

Part of the film peeling structure of this invention mainly includes an upper bracket, the upper bracket is connected to a frame, and the front end of the upper bracket has a first detector to detect the thin plate; the bottom of the upper bracket has a plurality of spaced and parallel upper friction blocks, and the rear end of any upper friction block has a first arc protrusion; There are two upper friction blocks, whereby when a thin plate is conveyed backward by a front conveying section through a rear conveying section, the first arc convex parts of the plurality of upper friction blocks can respectively press down on the upper surface of the substrate, so as to smoothly and effectively peel off the front edge of one of the upper films of a thin plate upward.

Please refer to Figs. 1 to 4, which are a preferred embodiment of the film peeling structure 1 of this invention, so as to peel off the front edge of at least one film of a thin plate 12 on a frame 11. Wherein, one end of frame 11 input sheet 12 is defined as the front end of frame 11, and one end of output sheet 12 is defined as rear end of frame 11. The front end of frame 11 has a front conveying section 13, and the rear end of frame 11 has a rear conveying section 14. In this embodiment, the veneer 12 is preferably placed above the plurality of rollers in the front conveying section 13 in a direction rotated at an angle of 45 degrees, so as to simultaneously peel off the front edge of at least one film and the other adjacent side edge.

The partial film peeling structure 1 mainly includes an upper support 2, a plurality of upper friction blocks 3, a first driving member 4, a lower support 5, a plurality of lower friction blocks 6 and a second driving member 7, wherein the upper support 2 is a rectangular flat plate, one end of the bottom surface of the upper support 2 in the longitudinal direction has a rectangular plate extending downward, and the rectangular plate is used as the first upper extension 21, and the other end of the bottom surface of the upper support 2 in the longitudinal direction has another rectangular plate extending downward. The portion 21 and the second upper extending portion 22 are parallel to each other.

The plurality of upper friction blocks 3 are respectively made of materials such as rubber or plastic, and the plurality of upper friction blocks 3 are arranged laterally at intervals on the same horizontal plane, and the arrangement direction of the plurality of upper friction blocks 3 is perpendicular to the conveying direction of the thin plate 12 . The rear end bottom of any upper friction block 3 has a first arc convex portion 31, and the bottom surface of the upper friction block 3 extends upwards toward the front end of the upper friction block 3 with the first arc convex portion 31, so that the bottom surface of the upper friction block 3 and the plate surface of the thin plate 12 form an acute angle with an open front end. The upper friction block 3 has a through hole 32 at the rear end, and the upper friction block 3 has a positioning hole 33 at the front end. One end of a shaft is connected to the first upper extension 21 , the other end of the shaft is connected to the second upper extension 22 , and the shaft continuously runs through a plurality of positioning holes 33 at the front ends of the upper friction blocks 3 , and the shaft is used as a first pivot 34 . One end of a round bar is connected to the first upper extension 21, and the other end of the round bar is connected to the second upper extension 22. The round bar continuously runs through the perforations 32 at the rear ends of the plurality of upper friction blocks 3, thereby forming an annular space 321 between the inner peripheral edge of the perforation 32 and the outer peripheral edge of the round bar.

The front end of the upper support 2 has a first detector 23 for downward detection of the position of the moving thin plate 12 of the front conveying section 13; the rear end of the upper support 2 has a second detector 24 for downward detection of the position of the aforementioned moving thin plate 12. There is a first upper air blowing unit 25 in the middle of the rear end of the upper bracket 2. The first upper air blowing unit 25 is located above the rear conveying section 14. The bottom end of the first upper air blowing unit 25 has a first upper air blowing port 251. The top of the first upper air blowing unit 25 is connected to the blower, so as to blow air forward obliquely below the first arc protrusion 31 of the upper friction block 3 on the middle position of the plurality of upper friction blocks 3. There is a second upper air blowing unit 26 in the middle of the front end of the upper bracket 2. The second upper air blowing unit 26 is located above the front conveying section 13. The bottom end of the second upper air blowing unit 26 has a second upper air blowing port 261. The top of the second upper air blowing unit 26 communicates with the blower, so as to blow out air towards the obliquely downward direction of the friction block 3 on the middle position of the plurality of upper friction blocks 3.

The first driving member 4 includes two piston groups (41, 41 '), the two piston groups (41, 41 ') are respectively connected on the frame 11, and the bottom ends of the two piston groups (41, 41 ') are respectively connected to the two ends of the longitudinal direction of the upper bracket 2, so as to move the upper bracket 2 and the plurality of upper friction blocks 3 up and down at the same time.

The lower bracket 5 is a rectangular flat plate, and the lower bracket 5 is correspondingly arranged below the upper bracket 2. One end in the longitudinal direction of the top surface of the lower bracket 5 has an upwardly extending rectangular plate.

The plurality of lower friction blocks 6 are respectively made of materials such as rubber or plastic, and the plurality of lower friction blocks 6 are oppositely disposed under the plurality of upper friction blocks 3 . The rear end top of any lower friction block 6 has a second arc convex portion 61, and the top surface of the lower friction block 6 extends downward toward the front end of the lower friction block 6 with the second arc convex portion 61, so that the top surface of the lower friction block 6 and the plate surface of the thin plate 12 form an acute angle with an open front end. The lower friction block 6 has a through hole 62 at the rear end, and the lower friction block 6 has a positioning hole 63 at the front end. One end of a shaft is connected to the first lower extension 51 , the other end of the shaft is connected to the second lower extension 52 , the shaft continuously passes through the positioning holes 63 at the front ends of the plurality of lower friction blocks 6 , and the shaft is used as the second pivot 64 . One end of a round bar is connected to the first lower extension 51, and the other end of the round bar is connected to the second lower extension 52. The round bar continuously runs through the perforations 62 at the rear ends of the plurality of lower friction blocks 6, thereby forming an annular space 621 between the inner peripheral edge of the perforation 62 and the outer peripheral edge of the round bar.

The middle position of the rear end of the lower support 5 has a first lower blowing unit 53, the first lower blowing unit 53 is located above the rear conveying section 14, the top of the first lower blowing unit 53 has a first lower blowing port 531, the bottom of the first lower blowing unit 53 communicates with the blower, so as to blow air forward obliquely above the second arc convex portion 61 of the friction block 6 under the middle position of the plurality of lower friction blocks 6. The middle position of the front end of the lower bracket 5 has a second lower blowing unit 54, the second lower blowing unit 54 is located below the front conveying section 13, the top of the second lower blowing unit 54 has a second lower blowing port 541, and the bottom end of the second lower blowing unit 54 communicates with the blower, so as to blow air towards the oblique upward direction of the friction block 6 below the middle position of the plurality of lower friction blocks 6.

The second driving member 7 includes two piston groups (71, 71 '), the two piston groups (71, 71') are respectively connected to the frame 11, and the tops of the two piston groups (71, 71') are respectively connected to the two ends of the lower bracket 5 in the longitudinal direction, so as to move the lower bracket 5 and the plurality of lower friction blocks 6 up and down at the same time.

5 and 6, when the thin plate 12 is a flat plate such as a printed circuit board, the thin plate 12 mainly includes a substrate 121, the upper surface of the substrate 121 has an upper film 122, and the lower surface of the substrate 121 has a lower film 123. A thin plate 12 is rotated at an angle of 45 degrees to be placed on the plurality of rollers of the front conveying section 13, and when it is conveyed backward from the front conveying section 13 toward the rear conveying section 14, the corner of the thin plate 12 is detected by the first detector 23, the first driving member 4 and the second driving member 7 can be activated simultaneously, the upper bracket 2 is moved downward, and the lower bracket 5 is moved upward. 12, on the upper surface of the plurality of lower friction blocks 6, the second arc convex portion 61 of the friction block 6 presses upward against the lower surface of the thin plate 12, and at the same time, the first upper air blowing unit 25 and the first lower air blowing unit 53 blow air respectively. And when the thin plate 12 continues to move backward, let the plurality of upper friction blocks 3 and the plurality of lower friction blocks 6 press one by one, through the friction resistance between each first arc convex portion 31 and the upper film 122, and the friction resistance between each second arc convex portion 61 and the lower film 123, to peel off the front edge and the adjacent edge of the other side of the upper film 122 and the lower film 123 respectively.

And when the second detector 24 detects the corner of the thin plate 12, it means that part of the peeling operation has been completed. At this time, through the simultaneous actuation of the first driving member 4 and the second driving member 7, the upper support 2 is moved upward and the lower support 5 is moved downward.

To sum up, this invention is equipped with at least one bracket on a frame, and at least one bracket is equipped with a plurality of friction blocks arranged side by side at intervals. Through the detection of the first detector and the simultaneous actuation of the first driving part and the second driving part, the arc convex part of the friction block is pressed against the surface of the thin plate, and at the same time, the front edge of at least one film can be peeled off by blowing air with the blowing unit. As for the curved and uneven thin plate, through a plurality of friction blocks arranged at intervals, the force of lifting the front edge of the film can be generated respectively, so that the front edge of the film can be peeled off smoothly and effectively; and the air is blown backward through the detection of the second detector and the upper and lower air blowing units respectively, so that the part of the upper film and the lower film that were originally peeled off can be flattened on the substrate again, which facilitates the subsequent overall film peeling operation.

Although this creation discloses preferred specific embodiments to achieve the above purpose, it is not intended to limit the structural features of this creation. Anyone with ordinary knowledge in this technical field should know that under the technical spirit of this creation, any easily conceivable changes or modifications are possible, and all of them are covered by the patent application scope of this creation.

1: Partial film peeling structure

11: Rack

12: thin plate

121: Substrate

122: Upper film

123: lower film

13: Front conveying section

14: rear conveying section

2: upper bracket

21: First upper extension

22: Second upper extension

23: First Detector

24:Second detector

25: The first upper blowing unit

251: The first upper blowing port 26: The second upper blowing unit 261: The second upper blowing port 3: Upper friction block 31: The first arc convex part 32,62: perforation 321,621: annular space 33,63: positioning hole 34: First Pivot 35: The first pole 4: The first driver 41,41’, 71,71’: piston group 5: Lower bracket 51: First lower extension 52: second lower extension 53: The first blowing unit 531: The first blowing port 54: The second blowing unit 541: The second blowing port 6: Lower friction block 61: Second arc convex part 64:Second Pivot 65: Second pole 7: The second driver

(Fig. 1) is a three-dimensional appearance schematic diagram of a preferred embodiment of the invention installed on a rack. [Fig. 2] is the three-dimensional appearance diagram of the upper bracket of the preferred embodiment of this creation. [Fig. 3] is the three-dimensional appearance diagram of the bracket under the preferred embodiment of this creation. [Fig. 4] is a combined cross-sectional view of a preferred embodiment of this creation. [Figure 5] is a schematic diagram of the use state of the preferred embodiment of this creation. [Fig. 6] is a three-dimensional schematic diagram of the use state of the preferred embodiment of this creation.

12: thin plate

121: Substrate

122: Upper film

123: lower film

13: Front conveying section

14: rear conveying section

2: upper bracket

23: First Detector

24:Second detector

25: The first upper blowing unit

26: The second upper blowing unit

3: Upper friction block

31: The first arc convex part

4: The first driver

5: Lower bracket

53: The first blowing unit

54: The second blowing unit

6: Lower friction block

61: Second arc convex part

7: The second driver

Claims (10)

A partial film peeling structure, which is connected to a frame. The front end of the frame has a front conveying section for conveying a thin plate to move along the conveying direction from the front end to the rear end, and then transports it backward through a rear conveying section to peel off an upper film on the upper surface of the substrate of the thin plate. The first arc protrusion, the first arc protrusion has a lowest point close to the rear end of the upper friction block, and the bottom surface of the upper friction block extends upwards toward the front end of the upper friction block with the lowest point; a first upper blowing unit, which is connected to the rear end of the upper support, and is located above the rear conveying section, for blowing air toward the direction below the first arc protrusion; The partial film peeling structure of claim 1, wherein the bottom surface of the upper bracket has a first upper extension and a second upper extension, the rear ends of the plurality of upper friction blocks pass through a first support rod, one end of the first support rod is connected to the first upper extension, and the other end of the first support rod is connected to the second upper extension; the front ends of the plurality of upper friction blocks pass through a first pivot, one end of the first pivot is connected to the first upper extension, and the other end of the first pivot is connected to the second upper extension. Partial film peeling structure according to claim 2, wherein the rear ends of the plurality of upper friction blocks have a perforation for passing through the first support rod, and there is an annular space between the inner peripheral edge of the perforation and the outer peripheral edge of the first support rod for the rear ends of the plurality of upper friction blocks to move up and down relative to the first support rod. The partial film peeling structure according to claim 1, wherein the first upper blowing unit has a first upper blowing port, and the first upper blowing port is located in the middle of the rear end of the upper support. The partial film peeling structure as claimed in claim 1 further includes a second upper air blowing unit connected to the front end of the upper bracket and located above the front conveying section for blowing air toward the direction below the upper friction block. The partial film peeling structure according to claim 1 further includes a second detector, which is located at the rear end of the upper support for detecting the thin plate. Part of the film peeling structure according to any one of claims 1 to 6, it further includes a lower support, a first lower air blowing unit and a second driving member, the lower support is connected to the frame, the top of the lower support is provided with a plurality of spaced and parallel lower friction blocks, the bottom of the rear end of the lower friction block has a second arc protrusion, and the top surface of the lower friction block extends downwards with the second arc protrusion towards the front end of the lower friction block; Air is blown out from the direction above the second arc-protruding portion; the second driving element is connected to the frame, and one end of the second driving element is connected to the lower bracket for moving the plurality of lower friction blocks up and down. For example, the partial film peeling structure of claim 7, wherein the top surface of the lower bracket has a first lower extension and a second lower extension, the rear ends of the plurality of lower friction blocks pass through a second support rod, one end of the second support rod is connected to the first lower extension, and the other end of the second rod is connected to the second lower extension; the front ends of the plurality of lower friction blocks pass through a second pivot, one end of the second pivot is connected to the first lower extension, and the other end of the second pivot is connected to the second lower extension. The partial film peeling structure according to claim 7, wherein the first lower blowing unit has a first lower blowing port, and the first lower blowing port is located in the middle of the rear end of the lower support. As the partial film peeling structure of claim 7, it further includes a second lower blowing unit connected to the front end of the lower bracket and located below the front conveying section for blowing air toward the direction above the lower friction block.

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