Pretreatment device for flexible circuit board production

Abstract

The invention relates to the field of flexible circuit board production, in particular to a pretreatment device for flexible circuit board production. According to an existing flexible circuit board pretreatment device, the thickness of glue on a flexible circuit board is prone to being different, dust is prone to being attached to the surface of the flexible circuit board, and therefore the pretreatment effect of the flexible circuit board is not good enough. The invention discloses a pretreatment device for flexible circuit board production. The pretreatment device comprises a support frame and the like, the supporting frame is fixedly connected with a mounting frame, the mounting frame is fixedly connected with two electric push rods, and the two electric push rods are symmetrically arranged. A worker starts the two electric push rods and the two friction plates at the same time to flatten and limit the flexible PCB, then the surface of the flexible PCB is coated with glue through the glue sprayer, glue on the surface of the flexible PCB is brushed evenly through the banister brush, in this way, the flexible PCB can be flattened and limited, the glue on the flexible PCB can be brushed evenly through the banister brush, and the working efficiency is improved. Therefore, the glue brushing effect of the flexible PCB can be better.

Description

Technical Field

[0001] The invention relates to the field of flexible circuit board production, and in particular to a pretreatment device for flexible circuit board production. Background Art

[0002] Flexible circuit board is a printed circuit board made of flexible substrate. Compared with traditional rigid printed circuit boards, FPC has the advantages of bendability, light weight and small size, so it has been widely used in modern electronic products. In the manufacturing process of flexible circuit boards, pretreatment is an important step, which directly affects the quality of subsequent processes and the reliability of finished products.

[0003] Most of the current flexible circuit board pretreatment devices manually apply three-proof glue to the flexible circuit board. However, manual glue application can easily lead to uneven glue thickness on the flexible circuit board, and glue dripping is also prone to occur. In addition, it is inconvenient to pre-clean the flexible circuit board during the glue application process, and dust is easily adhered to the surface of the flexible circuit board, resulting in an insufficient pretreatment effect of the flexible circuit board. Summary of the invention

[0004] In view of the shortcomings or deficiencies in the above-mentioned prior art, the present invention provides a pretreatment device for the production of flexible circuit boards, which can evenly distribute glue on the surface of the flexible circuit boards, and can also pre-clean the flexible circuit boards to prevent residual glue from dripping on the flexible circuit boards, thereby improving the pretreatment effect of the flexible circuit boards.

[0005] A pretreatment device for the production of flexible circuit boards, comprising a support frame, a mounting frame fixedly connected to the support frame, two electric push rods fixedly connected to the mounting frame, the two electric push rods are symmetrically arranged, a frame body is slidably connected to the mounting frame, a flexible PCB board is placed on the mounting frame, a glue spraying mechanism is arranged on the frame body, the glue spraying mechanism is used to spray glue on the flexible PCB board, a stretching and fixing mechanism is arranged on the frame body, a glue spreading mechanism is arranged on the frame body, and the glue spreading mechanism is connected to the glue spraying mechanism.

[0006] As a further preferred scheme, the glue spraying mechanism includes a servo motor, the servo motor is fixedly connected to the top of the frame, the placement rack is fixedly connected to the top of the frame, the placement rack is rotatably connected to a screw rod, the placement rack is slidably connected to a movable plate, the top of the movable plate is fixedly connected to a nut, the nut is threadedly connected to the screw rod, the bottom of the movable plate is fixedly connected to a glue sprayer, the glue sprayer is fixedly connected to a glue supply hose, and the glue supply hose is connected to the glue sprayer.

[0007] As a further preferred scheme, the stretching and fixing mechanism includes a fixing frame 1, two fixing frames 1 are fixedly connected to the frame body, the two fixing frames 1 are symmetrically arranged, the two fixing frames 1 are rotatably connected to rocker arms, the two rocker arms are symmetrically arranged, the two rocker arms located on the same fixing frame 1 are symmetrically arranged, a torsion spring 1 is connected between the fixing frame 1 and the two rocker arms in the same group, a friction plate is rotatably connected between the ends of the two rocker arms in the same group away from the fixing frame 1, and a torsion spring 2 is connected between the friction plate and the two rocker arms in the same group.

[0008] As a further preferred scheme, the glue spreading mechanism includes a second fixed frame, the second fixed frame is fixedly connected to the movable plate, a soft brush is slidably connected to the bottom end of the second fixed frame, a guide rod is fixedly connected to the soft brush, a guide groove plate is fixedly connected to the frame body, a guide bevel groove is formed on the guide groove plate, and the top end of the guide rod is located in the guide bevel groove on the guide groove plate.

[0009] As a further preferred embodiment, it also includes a cleaning mechanism, which is arranged on the placement rack, and the cleaning mechanism includes a rotating rod, one end of the screw rod is fixedly connected to the rotating rod, the movable plate is slidably connected to a slotted frame, the slotted frame has a guide straight groove, the end of the rotating rod away from the placement rack is located in the guide straight groove on the slotted frame, the slotted frame is slidably connected to a ring frame, the ring frame is slidably connected to the movable plate, two air pumps are fixedly connected to the movable plate, the two air pumps are symmetrically arranged, both air pumps are fixedly connected to hoses, and the ring frame is fixedly connected to the two hoses.

[0010] As a further preferred embodiment, it also includes a residual glue cleaning mechanism, which is arranged on the placement rack, and the residual glue cleaning mechanism includes a residual glue collecting rack, the placement rack is fixedly connected with the residual glue collecting rack, the residual glue collecting rack is provided with a collecting groove, the collecting groove on the residual glue collecting rack is rotatably connected with an axle rod, two return springs are connected between the axle rod and the residual glue collecting rack, the two return springs are symmetrically arranged, the axle rod is fixedly connected with a rotating rack, and the rotating rack is fixedly connected with a push plate.

[0011] The present invention has the following advantages: first, a staff member places a flexible PCB board on a mounting frame and starts two electric push rods at the same time, a soft brush contacts the surface of the flexible PCB board, two friction plates flatten and limit the flexible PCB board, then a glue sprayer applies glue to the surface of the flexible PCB board, and a soft brush evenly brushes the glue on the surface of the flexible PCB board. In this way, the flexible PCB board can be flattened and limited, and the glue on the flexible PCB board can be evenly brushed by the soft brush, so that the glue brushing effect of the flexible PCB board can be better.

[0012] When the nut drives the movable plate to move horizontally, the air pump will draw external air to spray to the surface of the flexible PCB through the hose, which can blow away the dust on the surface of the flexible PCB and achieve the purpose of pre-cleaning the surface of the flexible PCB. Then the push plate will scrape off the residual glue at the bottom of the glue sprayer, and then the rotating frame will support and bend the bottom of the soft brush, so that the soft brush is out of contact with the flexible PCB, thereby preventing the residual glue on the soft brush from dripping on the flexible PCB. When the nut drives the movable plate to move horizontally in the opposite direction and reset, the air pump will promote the solidification of the glue on the flexible PCB through the two hoses. In this way, the dust on the surface of the flexible PCB can be pre-cleaned, and the solidification of the glue on the flexible PCB can be promoted to a certain extent. It can also clean the residual glue at the bottom of the glue sprayer and prevent the residual glue on the soft brush from dripping on the flexible PCB, thereby achieving a better pretreatment effect on the flexible PCB. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the guide groove plate of the present invention.

[0015] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0016] Figure 4 It is a partial three-dimensional structural schematic diagram of the present invention.

[0017] Figure 5 It is a schematic diagram of the first three-dimensional structure of the stretching and fixing mechanism of the present invention.

[0018] Figure 6 It is a three-dimensional structural schematic diagram of the glue spraying mechanism of the present invention.

[0019] Figure 7 It is a partial three-dimensional structural schematic diagram of the glue spreading mechanism and the dust cleaning mechanism of the present invention.

[0020] Figure 8 It is a schematic diagram of the second three-dimensional structure of the stretching and fixing mechanism of the present invention.

[0021] Fig. 9 It is a schematic diagram of the three-dimensional structure of the guide groove plate of the present invention.

[0022] Fig.10 It is a three-dimensional structural schematic diagram of the residual glue cleaning mechanism of the present invention.

[0023] Fig.11 It is a three-dimensional structural schematic diagram of the shaft rod, rotating frame and push plate of the present invention.

[0024] Fig.12 It is a schematic diagram of the disassembled three-dimensional structure of the support frame, the mounting frame and the frame body of the present invention.

[0025] Fig.13 It is a partial three-dimensional structural schematic diagram of the glue spraying mechanism, glue leveling mechanism and dust cleaning mechanism of the present invention.

[0026] Among them: 1-support frame, 2-mounting frame, 3-electric push rod, 4-frame, 41-flexible PCB board, 51-servo motor, 52-placing frame, 53-screw rod, 54-movable plate, 55-nut, 56-glue sprayer, 57-glue supply hose, 61-fixed frame one, 62-rocker, 63-torsion spring one, 64-friction plate, 65-torsion spring two, 71-fixed frame two, 72-soft brush, 73-guide rod, 74-guide groove plate, 81-rotating rod, 82-slot frame, 83-ring frame, 84-air pump, 85-hose, 91-residual glue collection frame, 92-shaft rod, 93-reset spring, 94-rotating frame, 95-push plate. DETAILED DESCRIPTION

[0027] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can all be customized according to the description in the specification and drawings. The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, and bonding in the prior art, which will not be described in detail here.

[0028] Example 1

[0029] A pretreatment device for producing flexible circuit boards, such as Figure 1-Figure 13 As shown, it includes a support frame 1, a mounting frame 2 is connected to the support frame 1 by bolts, two electric push rods 3 are connected to the mounting frame 2 by bolts, the two electric push rods 3 are symmetrically arranged, a frame body 4 is slidably connected to the mounting frame 2, a flexible PCB board 41 is placed on the mounting frame 2, a glue spraying mechanism is arranged on the frame body 4, the glue spraying mechanism is used to spray glue on the flexible PCB board 41, a stretching and fixing mechanism is arranged on the frame body 4, a glue spreading mechanism is arranged on the frame body 4, and the glue spreading mechanism is connected to the glue spraying mechanism.

[0030] The glue spraying mechanism includes a servo motor 51, the servo motor 51 is connected to the top of the frame 4 by bolts, a placement frame 52 is welded to the top of the frame 4, a screw rod 53 is rotatably connected to the placement frame 52, a movable plate 54 is slidably connected to the placement frame 52, a nut 55 is connected to the top of the movable plate 54 by bolts, the nut 55 is threadedly connected to the screw rod 53, a glue sprayer 56 is connected to the bottom of the movable plate 54 by bolts, a glue supply hose 57 is connected to the glue sprayer 56 by a flange, and the glue supply hose 57 is communicated with the glue sprayer 56.

[0031] The stretching and fixing mechanism includes a fixing frame 61, two fixing frames 61 are connected to the frame body 4 by bolts, the two fixing frames 61 are symmetrically arranged, and the two fixing frames 61 are rotatably connected to the rocker arms 62, the two rocker arms 62 are symmetrically arranged, and the two rocker arms 62 located on the same fixing frame 61 are symmetrically arranged, and a torsion spring 63 is connected to the fixing frame 61 and the two rocker arms 62 of the same group through a hook, and a friction plate 64 is rotatably connected between the ends of the two rocker arms 62 of the same group away from the fixing frame 61, and a torsion spring 2 65 is connected to the friction plate 64 and the two rocker arms 62 of the same group through a hook.

[0032] The glue spreading mechanism includes a second fixing frame 71, the second fixing frame 71 is welded to the movable plate 54, the bottom end of the second fixing frame 71 is slidably connected to a soft brush 72, a guide rod 73 is welded to the soft brush 72, a guide groove plate 74 is welded to the frame body 4, a guide bevel groove is opened on the guide groove plate 74, and the top end of the guide rod 73 is located in the guide bevel groove on the guide groove plate 74.

[0033] At first, the staff will pass the glue into the glue sprayer 56 through the glue supply hose 57. First, the staff will place the flexible PCB board 41 on the mounting frame 2 and start the two electric push rods 3 at the same time. The contraction of the telescopic rods of the two electric push rods 3 will jointly drive the frame body 4 to move downward. The downward movement of the frame body 4 will drive the servo motor 51, the placement frame 52, the screw rod 53, the movable plate 54, the nut 55, the glue sprayer 56, the glue supply hose 57, the fixed frame 1 61, the swing rod 62, the torsion spring 1 63, the friction plate 64 and the torsion spring 2 65 to move downward, and the soft brush 72 will contact the surface of the flexible PCB board 41. The two ends of the flexible PCB board 41 will contact the two friction plates 64 respectively. Then, the two fixed frames 1 61 will squeeze the two friction plates 64 through the two sets of swing rods 62 to move away from each other. The torsion spring 1 63 and the torsion spring 2 65 will move downward. 5 will be twisted, thereby stretching and limiting the flexible PCB board 41, and then the servo motor 51 will drive the screw rod 53 to rotate, the rotation of the screw rod 53 will drive the nut 55 to move horizontally, the horizontal movement of the nut 55 will drive the movable plate 54, the second fixing frame 71 and the glue sprayer 56 to move horizontally, the glue sprayer 56 will apply glue to the surface of the flexible PCB board 41, and the guide rod 73 will reciprocate under the action of the guide groove plate 74 during the horizontal movement. The reciprocating movement of the guide rod 73 will drive the soft brush 72 to reciprocate in the direction of approaching or moving away from the guide groove plate 74, and the soft brush 72 will brush the glue on the surface of the flexible PCB board 41 evenly. In this way, the flexible PCB board 41 can be stretched and limited, and the glue on the flexible PCB board 41 can be brushed evenly by the soft brush 72, so that the glue brushing effect of the flexible PCB board 41 can be better.

[0034] When the flexible PCB board 41 is glued, the two electric push rods 3 will jointly drive the frame 4 to move upward, and the frame 4 will drive the servo motor 51, the placement frame 52, the screw rod 53, the movable plate 54, the nut 55, the glue sprayer 56, the glue supply hose 57, the fixed frame 1 61, the swing rod 62, the torsion spring 1 63, the friction plate 64 and the torsion spring 2 65 to move upward and reset, the flexible PCB board 41 will be out of contact with the two friction plates 64, the torsion spring 1 63 and the torsion spring 2 65 will be reset, and the reset of the torsion spring 1 63 and the torsion spring 2 65 will drive the two friction plates 64 to move toward each other through the two sets of swing rods 62. The soft brush 72 will be out of contact with the flexible PCB board 41, and the servo motor 51 will drive the nut 55 to move horizontally in the opposite direction and reset. The reset of the nut 55 will drive the movable plate 54, the fixed frame 2 71 and the glue sprayer 56 to move horizontally in the opposite direction and reset.

[0035] Example 2

[0036] On the basis of Example 1, Figure 3-Figure 13As shown, a dust cleaning mechanism is also included, which is arranged on the placement frame 52. The dust cleaning mechanism includes a rotating rod 81, and the rotating rod 81 is welded to one end of the screw rod 53. A slotted frame 82 is slidably connected to the movable plate 54, and a guide straight groove is opened on the slotted frame 82. The end of the rotating rod 81 away from the placement frame 52 is located in the guide straight groove on the slotted frame 82, and a ring frame 83 is slidably connected to the slotted frame 82. The ring frame 83 is slidably connected to the movable plate 54. Two air pumps 84 are connected to the movable plate 54 by bolts, and the two air pumps 84 are symmetrically arranged. Both air pumps 84 are connected to hoses 85 by flanges, and the ring frame 83 is fixedly connected to the two hoses 85.

[0037] The residual glue cleaning mechanism is also included, and the residual glue cleaning mechanism is arranged on the placement rack 52. The residual glue cleaning mechanism includes a residual glue collecting rack 91. The placement rack 52 is connected to the residual glue collecting rack 91 by bolts. The residual glue collecting rack 91 is provided with a collecting groove. An axle rod 92 is rotatably connected in the collecting groove of the residual glue collecting rack 91. Two return springs 93 are connected between the axle rod 92 and the residual glue collecting rack 91 by hooks. The two return springs 93 are symmetrically arranged. A rotating rack 94 is connected to the axle rod 92 by bolts, and a push plate 95 is connected to the rotating rack 94 by bolts.

[0038] When the nut 55 drives the movable plate 54 to move horizontally, the movable plate 54 will drive the glue sprayer 56, the ring frame 83, the two air pumps 84 and the two hoses 85 to move horizontally. When the servo motor 51 drives the screw rod 53 to rotate, the screw rod 53 will drive the rotating rod 81 to rotate. The rotation of the rotating roller will push the slotted frame 82 to move back and forth. The reciprocating movement of the slotted frame 82 will drive the bottom ends of the two hoses 85 to move back and forth. The air pump 84 will draw external air through the hose 85 and spray it onto the surface of the flexible PCB board 41, which can blow away the dust on the surface of the flexible PCB board 41, so as to achieve the purpose of pre-cleaning the surface of the flexible PCB board 41. When the glue sprayer 56 moves to the vicinity of the residual glue collection rack 91 after brushing the glue, the bottom of the glue sprayer 56 will contact the push plate 95, and the push plate 95 will scrape off the residual glue at the bottom of the glue sprayer 56. Then the soft brush 72 will contact the rotating rack 94. The movement of the glue sprayer 56 will push the push plate 95 and the rotating rack 94 to swing. When the nut 55 drives the movable plate 54 to move horizontally in the opposite direction to reset, the movable plate 54 drives the glue sprayer 56, the ring frame 83, the two air pumps 84 and the two hoses 85 to move horizontally in the opposite direction to reset. The air pump 84 blows air through the two hoses 85 to promote the solidification of the glue on the flexible PCB board 41. In this way, the dust on the surface of the flexible PCB board 41 can be pre-cleaned, and the solidification of the glue on the flexible PCB board 41 can be promoted to a certain extent. The residual glue at the bottom of the glue sprayer 56 can also be cleaned, and the residual glue on the soft brush 72 can be prevented from dripping on the flexible PCB board 41, thereby achieving a better pretreatment effect on the flexible PCB board 41.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pretreatment device for the production of flexible circuit boards, characterized in that: The invention comprises a support frame (1), a mounting frame (2) being fixedly connected to the support frame (1), two electric push rods (3) being fixedly connected to the mounting frame (2), the two electric push rods (3) being symmetrically arranged, a frame body (4) being slidably connected to the mounting frame (2), a flexible PCB board (41) being placed on the mounting frame (2), a glue spraying mechanism being arranged on the frame body (4), the glue spraying mechanism being used for spraying glue on the flexible PCB board (41), a stretching and fixing mechanism being arranged on the frame body (4), a glue spreading mechanism being arranged on the frame body (4), the glue spreading mechanism being connected to the glue spraying mechanism.

2. A pretreatment device for producing a flexible circuit board according to claim 1, characterized in that: The glue spraying mechanism comprises a servo motor (51), the servo motor (51) is fixedly connected to the top of the frame (4), a placement frame (52) is fixedly connected to the top of the frame (4), a screw rod (53) is rotatably connected to the placement frame (52), a movable plate (54) is slidably connected to the placement frame (52), a nut (55) is fixedly connected to the top of the movable plate (54), the nut (55) is connected to the screw rod (53) by threading, a glue sprayer (56) is fixedly connected to the bottom of the movable plate (54), a glue supply hose (57) is fixedly connected to the glue sprayer (56), and the glue supply hose (57) is communicated with the glue sprayer (56).

3. A pretreatment device for producing a flexible circuit board according to claim 2, characterized in that: The stretching and fixing mechanism comprises a fixing frame (61), two fixing frames (61) are fixedly connected to the frame body (4), the two fixing frames (61) are symmetrically arranged, the two fixing frames (61) are both rotatably connected to a swing rod (62), the two swing rods (62) are symmetrically arranged, the two swing rods (62) located on the same fixing frame (61) are symmetrically arranged, a torsion spring (63) is connected between the fixing frame (61) and the two swing rods (62) of the same group, a friction plate (64) is rotatably connected between the ends of the two swing rods (62) of the same group away from the fixing frame (61), and a torsion spring (65) is connected between the friction plate (64) and the two swing rods (62) of the same group.

4. A pretreatment device for producing a flexible circuit board according to claim 3, characterized in that: The glue spreading mechanism comprises a second fixing frame (71), the second fixing frame (71) is fixedly connected to the movable plate (54), a soft brush (72) is slidably connected to the bottom end of the second fixing frame (71), a guide rod (73) is fixedly connected to the soft brush (72), a guide groove plate (74) is fixedly connected to the frame body (4), a guide inclined groove is formed on the guide groove plate (74), and the top end of the guide rod (73) is located in the guide inclined groove on the guide groove plate (74).

5. A pre-treatment device for producing a flexible circuit board according to claim 4, characterized in that: The utility model also comprises a dust cleaning mechanism, which is arranged on the placement frame (52), and comprises a rotating rod (81), one end of the screw rod (53) is fixedly connected to the rotating rod (81), a slot frame (82) is slidably connected to the movable plate (54), a guide straight groove is opened on the slot frame (82), one end of the rotating rod (81) away from the placement frame (52) is located in the guide straight groove on the slot frame (82), a ring frame (83) is slidably connected to the slot frame (82), the ring frame (83) is slidably connected to the movable plate (54), two air pumps (84) are fixedly connected to the movable plate (54), the two air pumps (84) are symmetrically arranged, the two air pumps (84) are fixedly connected to hoses (85), and the ring frame (83) is fixedly connected to the two hoses (85).

6. A pre-treatment device for producing a flexible circuit board according to claim 5, characterized in that: The invention also comprises a residual glue cleaning mechanism, which is arranged on the placement frame (52), and comprises a residual glue collecting frame (91), the placement frame (52) is fixedly connected with the residual glue collecting frame (91), the residual glue collecting frame (91) is provided with a collecting groove, a shaft rod (92) is rotatably connected in the collecting groove on the residual glue collecting frame (91), two return springs (93) are connected between the shaft rod (92) and the residual glue collecting frame (91), and the two return springs (93) are symmetrically arranged, the shaft rod (92) is fixedly connected with a rotating frame (94), and the rotating frame (94) is fixedly connected with a push plate (95).

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