Circuit board protective film winding device

Abstract

The utility model provides a circuit board protective film winding device which comprises a containing frame and a winding frame, the containing frame is provided with a plurality of rails which are sequentially arranged in a stacked mode in the vertical direction, containing rollers which move along the rails are arranged in the rails, a stopping roller and a winding roller are sequentially arranged on the winding frame, and the stopping roller has the surface adsorption function. The distance between the adjacent containing rollers on the containing frame can be adjusted, so that the total length of the protective film passing through the distance between the containing rollers can be increased, the buffer time for replacing the winding rollers is obtained, and the protective film is prevented from being damaged due to accumulation. The stopping roller enables the protective film to be tightly attached to the surface of the stopping roller through the adsorption performance, then rotation of the stopping roller is stopped, discharging of the protective film is suspended, a winding roller behind the stopping roller can be replaced conveniently, due to the fact that the adsorption function aims at the surface of the whole protective film covering the stopping roller, local large pressure does not exist, and the discharging speed is high. And the protective film is not easy to damage, so that the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board protective film production, in particular to a circuit board protective film winding device. Background Art

[0002] Circuit boards are a widely used product in modern industry, and are widely used in all walks of life, mainly including printed circuit boards (PCB) and flexible circuit boards (FPC). Circuit boards miniaturize and visualize circuits, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout.

[0003] In the production process of circuit boards, in order to protect the circuit boards from being polluted and oxidized by the external environment, a protective film is usually attached to their surface. The protective film can help protect the circuit boards, isolate the circuit boards from the outside air, and prevent damage to the precision circuits inside the circuit boards. In addition, in the manufacturing process of multi-layer printed circuit substrates, the first copper foil involved in the formation of the protective circuit board can be crimped with multiple copper sheet laminates to prevent the pre-pressing plate from exceeding, and can also prevent the copper sheet laminates from bonding with each other and with the copper sheet laminates and the pressing plate.

[0004] At present, the production process of circuit board protective film is carried out in the form of an assembly line. The protective film is tensioned and transported through various rollers to achieve step-by-step processing and finally rolled onto the roller. When the rolling is completed and a new roller is replaced, the rolling needs to be temporarily stopped. If the production line is completely stopped, it will not only delay the production time and affect the production efficiency, but the frequent start and stop of the whole set of equipment will also easily cause various equipment failures. Therefore, a device for pausing the movement of the protective film has emerged. It is set in front of the winding roller, and the protective film is pressed by a clamp to suspend its movement, so that the rear winding roller can be replaced. However, this equipment still has certain problems: first, after the protective film is clamped and stopped, one end of the feed is still working and continuously feeding, which will cause the protective film to accumulate locally and may cause damage to it; second, the thickness of the protective film itself is extremely low. Although it has a certain elasticity, it will still cause damage to the clamping part when it is stopped by the clamp, affecting the product quality. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a circuit board protective film winding device, which solves the problem that the protective film may be damaged and product quality may be affected by the method of clamping the protective film to replace the winding roller without stopping the machine in the prior art.

[0006] According to an embodiment of the utility model, a circuit board protective film winding device comprises a accommodating frame and a winding frame, the accommodating frame is provided with a plurality of tracks stacked in sequence along the vertical direction, the tracks comprise two horizontal guide rails arranged in parallel, a accommodating roller is further provided between the guide rails, the axis of the accommodating roller is perpendicular to the guide rails, and the accommodating roller can move back and forth along the guide rails; a stopping roller and a winding roller are sequentially provided on the winding frame, the stopping roller has a surface adsorption function, and can adsorb and fix the protective film passing through its surface, and the winding roller is detachably provided on the winding frame.

[0007] Furthermore, the guide rail includes a cylindrical shell and a screw coaxially arranged inside the shell. The two screws in the two guide rails of the same track pass through the same end to the receiving frame at the end of the track. A driving shaft perpendicular to the screw is provided inside the receiving frame. The driving shaft is respectively connected to the end of the screw, and one end of the driving shaft is connected to a motor.

[0008] Furthermore, rotating shafts are coaxially provided at both ends of the accommodating roller, and ball bearings are provided at the ends of the rotating shafts. The ball bearings are screw-connected to the screw rod, so that the accommodating roller moves along the screw rod under the drive of the screw rod.

[0009] Furthermore, the driving shaft and the screw are connected by a bevel gear.

[0010] Furthermore, an upper tensioning roller and a lower tensioning roller are respectively provided at the top and bottom ends of the accommodating frame.

[0011] Furthermore, the height of the stopping roller is greater than the height of the winding roller and the lower tensioning roller, so that when the protective film passes through the lower tensioning roller, the stopping roller and the winding roller in sequence, the contact area with the stopping roller is larger.

[0012] Furthermore, the blocking roller comprises a hollow cylindrical shell and a connecting shaft coaxially arranged inside the shell and passing through both ends of the shell, an air extraction cavity is formed between the part of the connecting shaft located inside the shell and the inner wall of the shell, and a plurality of air extraction holes are evenly arranged on the shell;

[0013] A ventilation pipe is fixedly buried inside the connecting shaft, and the ventilation pipe passes through the middle of the connecting shaft toward both sides and is further connected to the air extraction cavity. One end of the ventilation pipe passes through and extends out of the connecting shaft and is connected to a fan through a transfer bearing.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The receiving frame of the utility model has a plurality of tracks stacked in sequence in the vertical direction, the tracks include two horizontal guide rails arranged in parallel, and a receiving roller is arranged between the guide rails, so that the receiving roller can move back and forth along the guide rail direction. When the receiving rollers of different layers are in a vertical parallel state, the total length of the protective film passing along the receiving roller is the shortest, and the material can be discharged normally. When it is necessary to suspend the discharge to replace the winding roller, the adjacent receiving rollers are allowed to move slowly in the opposite direction in sequence, so that the path length of the protective film passing through all the receiving rollers gradually increases until it reaches the maximum when all the receiving rollers are alternately located at both ends of the track. In this process, the discharge of the front protective film can be gradually accommodated, thereby obtaining a buffer time for replacing the winding roller, and ensuring that the protective film is always in a tensioned state, and its surface will not be damaged due to accumulation;

[0016] 2. The stopping roller of the utility model has a surface adsorption function, which can adsorb and fix the protective film passing through its surface. Therefore, when it is necessary to replace the winding roller, the protective film can be tightly attached to the surface of the stopping roller through the adsorption performance. At this time, the rotation of the stopping roller is stopped, and the discharge of the protective film is suspended, which is convenient for replacing the winding roller at the rear. Because the adsorption effect is on the entire surface of the protective film covering the stopping roller, there is no large local pressure, and it is not easy to cause damage to the protective film, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0018] Figure 2 It is a top view schematic diagram of the accommodating frame in the embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the connection between the guide rail and the accommodating roller in the embodiment of the utility model.

[0020] In the above drawings: 1. accommodating frame; 2. winding frame; 3. track; 4. accommodating roller; 5. stopping roller; 6. winding roller; 11. upper tensioning roller; 12. lower tensioning roller; 31. casing; 32. screw; 33. driving shaft; 41. rotating shaft; 42. ball bearing; 51. connecting shaft; 52. exhaust chamber; 53. exhaust hole; 54. ventilation pipe; 55. adapter bearing. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, an embodiment of the utility model provides a circuit board protective film winding device, comprising a containing frame 1 and a winding frame 2 which are sequentially arranged along the running direction of the production line.

[0023] In this embodiment, the receiving frame 1 has six tracks 3 stacked in sequence along the vertical direction, wherein each track 3 includes two horizontal guide rails arranged in parallel, and a receiving roller 4 is provided between the guide rails. The axis of the receiving roller 4 is perpendicular to the guide rail, and the receiving roller 4 can move back and forth along the guide rail.

[0024] like Figure 2 As shown, specifically, the guide rail includes a cylindrical casing 31 and a screw 32 coaxially arranged inside the casing 31. The two screws 32 in the two guide rails of the same track 3 pass through the same end to the receiving frame 1 at the end of the track 3. A driving shaft 33 perpendicular to the screw 32 is arranged inside the receiving frame 1. The driving shaft 33 is connected to the end of the screw 32 by a bevel gear drive, and one end of the driving shaft 33 is connected to a motor. The two ends of the receiving roller 4 are coaxially provided with a rotating shaft 41, and the end of the rotating shaft 41 is provided with a ball bearing 42. The ball bearing 42 is connected to the screw 32 by a screw rod, so that the receiving roller 4 moves along the screw 32 under the drive of the screw 32. That is, when the motor is working, the driving shaft 33 is driven to rotate, and then the screw 32 is driven to rotate, and then the ball bearing 42 and the receiving roller 4 are driven to move along the direction of the screw 32 through the screw rod connection, so that the control of the receiving roller 4 is realized.

[0025] like Figure 3 As shown, the winding frame 2 is provided with a stop roller 5 and a winding roller 6 in sequence. The stop roller 5 has a surface adsorption function and can adsorb and fix the protective film passing through its surface. The winding roller 6 is detachably arranged on the winding frame 2. Further, the stop roller 5 includes a hollow cylindrical shell and a connecting shaft 51 coaxially arranged inside the shell and passing through both ends of the shell. An air extraction cavity 52 is formed between the part of the connecting shaft 51 located inside the shell and the inner wall of the shell. A plurality of air extraction holes 53 are evenly arranged on the shell. Correspondingly, a vent pipe is fixedly buried inside the connecting shaft 51. The vent pipe passes through the middle of the connecting shaft 51 toward both sides and then communicates with the air extraction cavity 52. ​​One end of the vent pipe passes through and extends out of the connecting shaft 51, and is connected to a fan through a transfer bearing 55. The fan is fixedly arranged outside, and its air outlet pipe is also fixedly arranged. The vent pipe rotates with the connecting shaft 51. Therefore, the fan and the ventilation pipe 54 are connected by a transfer bearing 55 to achieve rotational connection.

[0026] Preferably, an upper tensioning roller 11 and a lower tensioning roller 12 are respectively provided at the top and bottom of the receiving frame 1, and the protective film passes through the upper tensioning roller 11, the six receiving rollers 4 and the outside of the lower tensioning roller 12 in sequence, and then passes through the blocking roller 5 to reach the winding roller 6. Further preferably, the height of the blocking roller 5 is greater than the height of the winding roller 6 and the lower tensioning roller 12, so that when the protective film passes through the lower tensioning roller 12, the blocking roller 5 and the winding roller 6 in sequence, the contact area with the blocking roller 5 is larger, so as to increase the adsorption effect of the blocking roller 5 on the protective film.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A circuit board protective film winding device, characterized in that: It includes a accommodating frame and a winding frame, the accommodating frame is provided with a plurality of tracks stacked in sequence along the vertical direction, the tracks include two horizontal guide rails arranged in parallel, a accommodating roller is also provided between the guide rails, the axis of the accommodating roller is perpendicular to the guide rails, and the accommodating roller can move back and forth along the guide rails; the winding frame is sequentially provided with a stopping roller and a winding roller, the stopping roller has a surface adsorption function, and can adsorb and fix the protective film passing through its surface, and the winding roller is detachably provided on the winding frame.

2. A circuit board protective film winding device as claimed in claim 1, characterized in that: The guide rail includes a cylindrical casing and a screw rod coaxially arranged inside the casing. The two screw rods in the two guide rails of the same track pass through the same end to the accommodating frame at the end of the track. A driving shaft perpendicular to the screw rod is provided inside the accommodating frame. The driving shaft is respectively connected to the end of the screw rod, and one end of the driving shaft is connected to a motor.

3. A circuit board protective film winding device as claimed in claim 2, characterized in that: Rotating shafts are coaxially arranged at both ends of the accommodating roller, and ball bearings are arranged at the ends of the rotating shafts. The ball bearings are connected to the screw rod by a screw rod, so that the accommodating roller moves along the screw rod under the drive of the screw rod.

4. A circuit board protective film winding device as claimed in claim 2, characterized in that: The driving shaft and the screw rod are connected by a bevel gear.

5. A circuit board protective film winding device as claimed in claim 1, characterized in that: An upper tensioning roller and a lower tensioning roller are respectively disposed at the top end and the bottom end of the accommodating frame.

6. A circuit board protective film winding device as claimed in claim 5, characterized in that: The height of the stopping roller is greater than that of the winding roller and the lower tensioning roller, so that when the protective film passes through the lower tensioning roller, the stopping roller and the winding roller in sequence, the contact area with the stopping roller is larger.

7. A circuit board protective film winding device as claimed in claim 1, characterized in that: The stopping roller comprises a hollow cylindrical shell and a connecting shaft coaxially arranged inside the shell and passing through both ends of the shell, a suction cavity is formed between the part of the connecting shaft located inside the shell and the inner wall of the shell, and a plurality of suction holes are evenly arranged on the shell; A ventilation pipe is fixedly buried inside the connecting shaft, and the ventilation pipe passes through the middle of the connecting shaft toward both sides and is further connected to the air extraction cavity. One end of the ventilation pipe passes through and extends out of the connecting shaft and is connected to a fan through a transfer bearing.

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