Film stripping machine for circuit board production
By designing a film stripping machine that uses mechanical devices and hot air fans, the problem of existing equipment using a large amount of tape and shutdown cleaning when stripping film is solved, and an efficient film stripping process without tape is achieved, reducing costs and improving working efficiency.
Patent Information
- Application Number
- CN202422255034.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-14
AI Technical Summary
Existing film stripping equipment requires the use of a large amount of tape when stripping film, which leads to high costs and requires shutdown and cleaning when the tape is wound, which wastes time and labor.
A film stripping machine is designed to peel off the film on the surface of the circuit board through thin lines using mechanical devices, and combine a hot air fan and a film stripping agent to achieve a tape-free film stripping process.
The film is fully peeled off without adhesive, which reduces processing costs, avoids shutdown and cleaning when tape is wound, and saves time and labor costs.
Smart Images
Figure CN223040256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a film stripping machine, in particular to a film stripping machine for printed circuit board production. Background Technique
[0002] During etching processing, a photosensitive ink and an anti-corrosion protective film are pasted on the surface of the printed circuit board. Their functions are both used to protect the areas that do not need to be corroded. For the convenience of subsequent processing, the protective film needs to be stripped off after etching.
[0003] In the existing film stripping equipment, at the film stripping station, a sharp blade is used to lift the film at the corner of the printed circuit board transported on the conveyor line. At the same time, there is a tape on the printed circuit board, and the adhesive layer of the tape faces the side of the printed circuit board. When the film is lifted, the transported tape will adhere to the film, and the film is torn off by rolling the take-up roller to pull the tape. The film is completely stripped by means of adhesion. However, when the above equipment strips the film, for continuous film stripping processing, a large amount of tape is required, which is undoubtedly a relatively large cost output. Moreover, when there is a large amount of tape wound on the roller of the take-up tape film roll, it is necessary to stop the machine for cleaning, which will cause waste of time and labor. Content of the Utility Model
[0004] In order to overcome the shortcomings that when the existing equipment strips the film, for continuous film stripping processing, a large amount of tape is required, which is undoubtedly a relatively large cost output, and when there is a large amount of tape wound on the roller of the take-up tape film roll, it is necessary to stop the machine for cleaning, which will cause waste of time and labor, the purpose is to provide a film stripping machine for printed circuit board production that uses a mechanical device to separate the film, does not require the use of tape adhesion, reduces processing costs and improves work efficiency.
[0005] Technical Solution: A film stripping machine for printed circuit board production includes mounting seats symmetrically arranged on both sides of the conveying device at the film stripping station; a rotating frame rotatably mounted on the upper part of the mounting seats; a torsion spring arranged around the hinge joint of the mounting seat and the rotating frame, with both ends thereof respectively connected to the same-side mounting seat and the rotating frame. Under the action of the torsion spring, the end of the rotating frame away from the hinge point is inclined downward, and the height of this end is lower than the bottom of the mounting seat; a wire tightener fixedly connected to the end of the rotating frame away from the hinge point, composed of a tapered screw and a nut. A groove is opened in the tapered screw, and a through hole is radially opened along the inner side of the screw; a stripping wire passes through the through holes of the two wire tighteners and is firmly clamped by the two wire tighteners, and the stripping wire is in a tensioned state; a connecting plate fixedly arranged on the side of the rotating frame away from the mounting seat and mounted on the lower part of the rotating frame; a roller rotatably mounted on the lower part of the connecting plate, and the lowest point of the roller is slightly lower than the stripping wire.
[0006] In addition, it is particularly preferred that it further includes a housing fixedly connected between the lower top surfaces of the two rotating frames on one side, with an inclination angle consistent with that of the rotating frames; a rotating shaft rotatably installed inside the housing, with two rotating shafts, and a gap for film transmission is left between the two rotating shafts. One end of the front parts of the two rotating shafts passes through the front part of the housing; a transmission group arranged at the front part of the housing, composed of a motor installed on the rotating frame on the front side and two meshing gears, with the two gears respectively installed on the two rotating shafts, and the output shaft of the motor of the transmission group is fixedly connected to the rotating shaft on the left side.
[0007] In addition, it is particularly preferred that it further includes a hot air blower fixedly connected to the right part of the housing, with an inclination angle consistent with that of the housing. An air outlet pipe is connected and communicated to the lower part of the hot air blower, and a plurality of air outlets are opened on the side of the air outlet pipe facing the mounting seat.
[0008] In addition, it is particularly preferred that it further includes a fixing frame installed on the upper right side of the hot air blower; a liquid tank arranged inside the fixing frame; a liquid outlet pump installed at the lower part of the fixing frame, with the input end of the liquid outlet pump penetrating into the inside of the liquid tank; a liquid outlet pipe connected to the output end of the liquid outlet pump, with the pipe orifice of the liquid outlet pipe facing one side of the film stripping line. The liquid outlet pump pumps out the liquid in the liquid tank through the input end and discharges it through the liquid outlet pipe at the output end.
[0009] In addition, it is particularly preferred that it further includes an inclined plate welded inside the housing, with an inclination angle consistent with that of the rotating shaft.
[0010] The utility model achieves the following effects. The utility model peels the thin film adhered to the surface of the circuit board through a thin wire. While completely peeling the thin film, it does not require the method of glue removal, reducing the processing cost of the film stripping station. At the same time, it does not require cleaning the winding roller of the tape in the later stage, saving time and labor costs.
[0011] The utility model heats the film tearing position during film stripping, and by blowing hot air at a preset temperature, the adhesive force between the adhered thin film and the circuit board disappears, realizing simple peeling, leaving no residual glue, and the surface of the circuit board is not contaminated by adhered substances.
[0012] The utility model timely guides and transports the peeled thin film through the rotating shaft, and cooperates with an external collection device to timely clean the peeled thin film, avoiding the accumulation of the peeled thin film at the film stripping station and affecting the normal progress of processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a three-dimensional structural schematic diagram of the utility model.
[0014] Figure 2 is a three-dimensional structural schematic diagram of the film stripping mechanism of the utility model.
[0015] Figure 3 This is a three-dimensional structural schematic diagram of components such as the mounting base, rotating frame, and torsion spring of the present utility model.
[0016] Figure 4 This is a cross-sectional view of components such as the housing of the present utility model.
[0017] Figure 5 This is a three-dimensional structural schematic diagram of components such as the liquid tank, liquid outlet pump, and liquid outlet pipe of the present utility model.
[0018] Figure 6 This is a three-dimensional structural schematic diagram of components such as the air outlet pipe and inclined plate of the present utility model.
[0019] Among them, the above-mentioned drawings include the following reference numerals: 1, mounting base; 2, rotating frame; 3, torsion spring; 4, wire tightener; 5, film stripping wire; 6, connecting plate; 61, roller; 7, housing; 8, rotating shaft; 9, hot air blower; 91, air outlet pipe; 10, transmission group; 11, fixing frame; 12, liquid tank; 13, liquid outlet pump; 131, liquid outlet pipe; 14, inclined plate. Specific Embodiments
[0020] To make the purpose, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concept of the present utility model.
[0021] Embodiment 1:
[0022] A film stripping machine for printed circuit board production, as Figures 1-4As shown in the figure, it includes mounting seats 1 that need to be symmetrically arranged on both sides of the conveying device frame at the film stripping station. A number of screw holes for easy fixation are provided at the lower part of the mounting seats 1. Mounting frames are rotatably connected to the mounting frames. A torsion spring 3 is wound around the hinge joint of the mounting frame 1 and the rotating frame 2. Both ends of the torsion spring 3 are respectively connected to the mounting seat 1 and the rotating frame 2 on the same side. Under the action of the torsion spring 3, one end of the rotating frame 2 far from the hinge point is inclined downward, and the height of this end is lower than the bottom of the mounting seat 1. The purpose of this setting is that when the conveyor belt of the conveying device is lower than its mounting frame, the rotating frame 2 can penetrate into the space between the conveying device frames, be close to the workpieces transported on the conveying device, and the rotating frames 2 need to be distributed on both sides of the conveyor belt of the conveying device. A wire tightener 4 is arranged at the lower position on the side of the rotating frame 2 close to the mounting frame 1 on the same side. The wire tightener 4 is composed of a tapered screw and a nut. A groove is provided in the tapered screw, and through holes are radially provided along the inner side of the screw. When the nut is screwed towards the opening of the groove of the tapered screw, the screw parts on both sides of the groove will be squeezed inward. A film stripping wire 5 passes through the through holes between the two wire tighteners 4 and is firmly clamped after the nuts of the two wire tighteners 4 are rotated. During installation, the film stripping wire 5 needs to be in a tensioned state. The film stripping wire 5 has a small wire diameter and high toughness. The height of the film stripping wire 5 needs to be adjusted to be slightly higher than the conveying device. When the circuit board on the transmission device is transmitted between the rotating plates and contacts the film stripping wire 5, the thinner film stripping wire 5 will penetrate between the circuit board and the film, and the film stripping wire 5 will strip the film on the surface of the circuit board during transmission. A connecting plate 6 is fixedly connected to the side of the rotating frame 2 far from the mounting seat 1. The connecting plate 6 is inclined and is installed at the lower part of the rotating frame 2; a roller 61 is rotatably installed at the lower part of the connecting plate 6. The lowest point of the roller 61 is slightly lower than the film stripping wire 5. The roller 61 will roll-press the circuit board during transmission to limit the circuit board during film stripping and prevent one end of the circuit board from warping during film stripping by the film stripping wire 5, which affects the film stripping effect.
[0023] The film stripping device is installed on the conveying device at the film stripping station. The film stripping device straddles the conveying device. The roller 61 contacts the conveyor belt of the conveying device and rotates with the conveyor belt. Under the action of the roller 61 and the connecting plate 6, the rotating frame 2 will rotate and adjust, and the torsion spring 3 will be twisted under force. Under the action of the torsion spring 3, the lower part of the rotating frame 2 is in a downward pressing force state. At this time, the film stripping wire 5 is at an appropriate height. When the circuit board on the conveying device is transmitted, it should first contact the roller 61, and the thinner film stripping wire 5 will strip the film on the surface of the circuit board. Through continuous feeding of the conveying device and the fixed film stripping wire for continuous film stripping of multiple intermittently incoming circuit boards, the efficiency is relatively high.
[0024] Embodiment 2:
[0025] On the basis of Embodiment 1, when it is necessary to clean the stripped film in time, such as Figure 1 、 Figure 4 、Figure 5 and Figure 6 As shown, it further includes a housing 7 fixedly connected between one side of the lower top surfaces of two rotating frames 2. A cavity with an opening facing downward is provided inside the housing 7. The inclination angle of the housing 7 is the same as that of the rotating frame 2. Two rotating shafts 8 are rotatably installed inside the housing 7. A gap for squeezing and transmitting the film is left between the two rotating shafts 8. One end of the front parts of the two rotating shafts 8 passes through the front part of the housing 7. A transmission group 10 is arranged at the front part of the housing 7. The transmission group 10 is composed of a motor installed on the front-side rotating frame 2 and two meshing gears. The two gears are respectively installed on the two rotating shafts 8. Under the action of the gears, the two rotating shafts 8 rotate towards each other. The output shaft of the motor of the transmission group 10 is fixedly connected to the left rotating shaft 8. When the film is separated by the film stripping line 5, according to the transmission direction of the transmission device, the circuit board will flow from one side of the film stripping line 5 to one side of the housing 7. At this time, one end of the stripped film will penetrate into the cavity of the housing 7 and contact the two rotating shafts 8. When the transmission group 10 works, the rotating shafts 8 start to rotate. Under the rolling action of the rotating shafts 8, the film will be brought into the gap between the two rotating shafts 8. By adjusting the rotation speed of the motor, one end of the film stripped by the rotating shafts 8 pulling the film stripping line 5 can be realized to assist in the film tearing work. The motor rotates counterclockwise. In this way, when there is a film passing through between the two rotating shafts 8, the film can be transmitted to the outside of the housing, and the transmitted film can be timely collected and cleaned through an externally connected collecting device.
[0026] In a specific embodiment: As Figure 1 , Figure 4 , Figure 5 and Figure 6 shown, it further includes a hot air blower 9 fixedly connected to the right part of the housing 7, with the same inclination angle as the housing 7. The hot air blower 9 can generate a heat flow. An air outlet pipe 91 for blowing out the heat flow is connected and communicated to the lower part of the hot air blower 9. A plurality of air outlets are opened on the side of the air outlet pipe 91 facing the mounting base 1. The heat flow blown out from the air outlets will blow towards the position where the film is stripped from the circuit board by the film stripping line 5. The blown hot air can make the adhesive force between the adhered film and the circuit board disappear, realizing simple peeling, leaving no residual glue, and the surface of the circuit board is not contaminated by the adhered substances. The bottom height of the air outlet pipe 91 is slightly higher than that of the film stripping line 5.
[0027] In a specific embodiment: There is also a fixing frame 11, which is installed on the upper right side of the hot air blower 9. A liquid tank 12 is arranged inside the fixing frame 11, and a demoulding agent is provided in the liquid tank 12. When the demoulding agent is coated on the film bonding part, its adhesion to the object will be reduced, making the film easier to fall off. A liquid outlet pump 13 capable of pumping out the liquid agent is installed at the lower part of the fixing frame 11. The pipeline at the input end of the liquid outlet pump 13 penetrates into the interior of the liquid tank 12 and is wrapped by the liquid agent. An outlet pipe 131 is arranged at the output end of the liquid outlet pump 13. The water outlet of the outlet pipe 131 is a pipe surface with a number of small holes. The nozzle of the outlet pipe 131 faces the film peeling line 5. When the film peeling line 5 separates the film and the rotating shaft 8 assists in tearing the film, the liquid outlet pump 13 pumps out the liquid in the liquid tank 12 through the input end and discharges it through the outlet pipe 131 at the output end. The discharged liquid agent is atomized and sprayed on the film tearing place. With the demoulding liquid agent and in cooperation with the hot air blower 9, the demoulding speed is accelerated.
[0028] In a specific embodiment: As Figures 5-6 shown, there is also an inclined plate 14, which is welded inside the housing 7 and has the same inclination angle as the rotating shaft 8. The lower part of the inclined plate 14 is inclined. Near the film peeling line 5 at the lower part, the left side of the upper part corresponds to the gap between the two rotating shafts 8. When the film peeling line 5 peels off one end of the film, the film will enter directly between the two rotating shafts 8 under the guidance of the inclined plate 14, reducing the situation where the film cannot smoothly penetrate into the rotating shaft 8 and requires manual assistance for guidance.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.
Claims
1. A film stripping machine for producing circuit boards, comprising a mounting seat (1) symmetrically arranged on both sides of a film stripping station conveying device; a rotating frame (2) rotatably mounted on the upper part of the mounting seat (1); a torsion spring (3) arranged around the mounting seat and the rotating frame (2) at a hinge, and its two ends are respectively connected to the mounting seat (1) and the rotating frame (2) on the same side, under the action of the torsion spring (3), the end of the rotating frame (2) away from the hinge point is tilted downward, and the height of this end is lower than the bottom of the mounting seat (1); Its characteristics are: It also includes a tensioner (4) fixedly connected to the end of the rotating frame (2) away from the hinge point, consisting of a conical screw and a nut, the conical screw having a groove therein and a through hole radially opened along the inner side of the screw; a film stripping line (5) passing through the two through holes of the tensioner (4) and firmly clamped by the two tensioners (4), the film stripping line (5) being in a tensioned state; a connecting plate (6) fixedly arranged on a side of the rotating frame (2) away from the mounting seat (1) and mounted on the lower part of the rotating frame (2); a roller (61) rotatably mounted on the lower part of the connecting plate (6), the lowest point of the roller (61) being slightly lower than the film stripping line (5).
2. A film stripping machine for circuit board production as claimed in claim 1, characterized in that: It also includes a shell (7) fixedly connected between one side of the lower top surface of the two rotating frames (2), and the inclination angle is consistent with that of the rotating frames (2); a rotating shaft (8) rotatably mounted inside the shell (7), the number of the rotating shafts (8) is two, a gap for film transfer is left between the two rotating shafts (8), and one end of the front of the two rotating shafts (8) passes through the front of the shell (7); a transmission group (10) is arranged at the front of the shell (7), and is composed of a motor mounted on the rotating frame (2) on the front side and two gears meshing with each other, the two gears are respectively mounted on the two rotating shafts (8), and the motor output shaft of the transmission group (10) is fixedly connected to the rotating shaft (8) on the left side.
3. A film stripping machine for circuit board production as claimed in claim 2, characterized in that: It also includes a hot air blower (9) which is fixedly connected to the right part of the shell (7) and has an inclination angle consistent with that of the shell (7). The lower part of the hot air blower (9) is connected to and communicates with an air outlet pipe (91), and the air outlet pipe (91) has a plurality of air outlets on one side facing the mounting seat (1).
4. A film stripping machine for circuit board production as claimed in claim 3, characterized in that: It also includes a fixing frame (11) installed on the upper right side of the hot air blower (9); a liquid tank (12) arranged on the inner side of the fixing frame (11); a liquid outlet pump (13) installed on the lower part of the fixing frame (11), the input end of the liquid outlet pump (13) penetrates into the liquid tank (12); a liquid outlet pipe (131) connected to the output end of the liquid outlet pump (13), the pipe mouth of the liquid outlet pipe (131) faces the side of the film stripping line (5), and the liquid outlet pump (13) draws out the liquid in the liquid tank (12) through the input end and discharges it through the liquid outlet pipe (131) at the output end.
5. A film stripping machine for circuit board production as claimed in claim 4, characterized in that: It also includes an inclined plate (14) which is welded to the inner side of the shell (7) and has an inclination angle consistent with that of the rotating shaft (8).