Circuit board gluing machine

Abstract

The utility model relates to the field of gluing equipment, in particular to a circuit board gluing machine, which is characterized in that a conveying belt is mounted on a rack, a gluing mechanism positioned above the conveying belt is arranged on the rack, and a circuit board positioning mechanism matched with the gluing mechanism is further arranged on the rack; the circuit board positioning mechanism comprises a mounting frame driven by a first air cylinder to ascend and descend, two push rods are movably mounted at the bottom of the mounting frame in the length direction of the conveying belt, and two push plates oppositely arranged in the width direction of the conveying belt are mounted on the inner sides of the push rods. The two push rods are driven to be close to each other synchronously through the positive and negative tooth screw rod, so that the two push rods abut against the front side and the rear side of the circuit board respectively, and then the two push plates are driven to move inwards synchronously through extension of the second air cylinder, so that the two push plates abut against the left side and the right side of the circuit board respectively. Therefore, the circuit boards are pushed to move to the position under the gluing mechanism through the push rod and the push plate, and the positions of the multiple circuit boards are kept consistent during gluing every time.

Description

Technical Field

[0001] The utility model relates to the field of glue coating equipment, in particular to a circuit board glue coating machine. Background Art

[0002] In the production process of printed circuit boards, electronic components often need to be packaged or mounted, so glue coating operations need to be performed.

[0003] The utility model patent with application number CN202320046992.6 discloses a PCB surface coating device, including a PCB coating assembly line and a PCB board gluer. The PCB coating assembly line includes a conveyor belt, a clamping groove, a protective side plate, a positioning plate, a transmission screw and a servo motor. A plurality of clamping grooves are provided on the surface of the conveyor belt, and a PCB board is clamped in the clamping groove. The coating device clamps the PCB board onto the PCB coating assembly line, and the PCB coating assembly line drives the PCB board to move. When the PCB board moves to the position of the PCB board gluer, the PCB board gluer glues it.

[0004] However, the size of the clamping groove of the above coating device is fixed, so it can only be used to apply glue to circuit boards of one size, which has great limitations in use and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a circuit board glue coating machine, which is convenient for gluing circuit boards of different sizes, so as to solve the problems in the prior art.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a circuit board gluing machine, comprising a frame, a conveyor belt is installed on the frame, a gluing mechanism located above the conveyor belt is provided on the frame, and a circuit board positioning mechanism matching the gluing mechanism is also provided on the frame; the circuit board positioning mechanism comprises a mounting frame driven to rise and fall by a first cylinder, two push rods are movably installed at the bottom of the mounting frame along the length direction of the conveyor belt, the push rods extend along the width direction of the conveyor belt, the two push rods are arranged opposite to each other along the length direction of the conveyor belt, and the two push rods are driven by positive and negative screw rods to synchronously approach or move away from each other; two push plates arranged opposite to each other along the width direction of the conveyor belt are installed on the inner side of the push rod, the bottom of the push plate is flush with the bottom of the push rod, and the two push plates are driven by the second cylinder to approach or move away from each other.

[0007] As a further improvement, the push rod is hollow, and a rotating rod driven by an adjusting motor is provided inside the push rod. The rotating rod extends along the width direction of the conveyor belt, and a pressure plate for pressing the circuit board located on the inner side of the push rod is fixedly mounted on the rotating rod. The push rod is provided with a reserved hole for the pressure plate to pass through.

[0008] As a further improvement, the pressure plate is provided with a connecting portion, one end of the connecting portion is fixedly mounted on the rotating rod, a clamping portion is integrally formed at one end of the connecting portion away from the rotating rod, and a guide portion is integrally formed at one end of the clamping portion away from the connecting portion, and when the clamping portion is rotated to a horizontal state on the inner side of the push rod, the guide portion is in a state of extending upwardly and tilted in a direction away from the clamping portion.

[0009] As a further improvement, a mounting plate driven to rise and fall by a third cylinder is provided in the push rod, and the adjusting motor and the rotating rod are both mounted on the mounting plate.

[0010] As a preferred technical solution, the gluing mechanism includes a gantry frame fixedly mounted on the frame, the gantry frame is provided with a first slide which is driven by a first driving mechanism and moves along the width direction of the conveyor belt, the first slide is fixedly mounted with a bracket, the bracket is provided with a second slide which is driven by a second driving mechanism and moves along the length direction of the conveyor belt, the second slide is provided with a gluing cylinder whose piston rod extends downward, and a gluing head is fixedly mounted on the piston rod of the gluing cylinder.

[0011] After adopting the above technical solution, the beneficial effects of the utility model are:

[0012] (1) The present application drives two push rods to approach each other synchronously through the positive and negative screw rods, so that the two push rods are respectively against the front and rear sides of the circuit board, and then drives the two push plates to move inward synchronously through the extension of the second cylinder, so that the two push plates are respectively against the left and right sides of the circuit board, thereby pushing the circuit board to the bottom of the gluing mechanism through the push rods and the push plates, so that the positions of multiple circuit boards are kept consistent each time the gluing is applied. The present application is convenient for matching circuit boards of different sizes for use, and has a wider range of applications;

[0013] (2) In the present application, when the bottom of the push rod contacts the upper surface of the conveyor belt, the motor is adjusted to drive the rotating rod to rotate and the pressing plate is rotated to the inner side of the push rod, so that the edge of the circuit board can be pressed by the pressing plate, thereby preventing the edge of the circuit board from lifting up during the process of the push rod and the push plate pushing the circuit board to move;

[0014] (3) The present application facilitates raising or lowering the mounting plate by extending and retracting the third cylinder, thereby adjusting the distance between the pressing portion and the upper surface of the conveyor belt when the pressing portion rotates to a horizontal state, so as to facilitate pressing circuit boards of different thicknesses by the pressing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a circuit board positioning mechanism of an embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure inside the push rod of an embodiment of the utility model;

[0019] Figure 4 It is a structural schematic diagram of a pressing plate in an embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the gluing mechanism of an embodiment of the utility model.

[0021] In the figure: 1-frame; 2-vertical plate; 3-conveyor belt; 4-circuit board placement area; 5-first cylinder; 6-mounting frame; 7-fixed plate; 8-guide rod; 9-push rod; 10-positive and negative threaded screw; 11-driving motor; 12-nut; 13-push plate; 14-second cylinder; 15-adjusting motor; 16-rotating rod; 17-pressing plate; 18-reserved hole; 19-connecting part; 20-ring; 21-pressing part; 22-guide part; 23-third cylinder; 24-mounting plate; 25-door frame; 26-first slide seat; 27-first slide rod; 28-first screw rod; 29-bracket; 30-second slide seat; 31-second slide rod; 32-second motor; 33-second screw rod; 34-glue coating cylinder; 35-glue injection head; 36-first motor. DETAILED DESCRIPTION

[0022] like Figures 1 to 5As shown, a circuit board gluing machine includes a frame 1, the frame 1 includes two vertical plates 2 arranged opposite to each other on the left and right, a conveyor belt 3 extending forward and backward is installed between the two vertical plates 2, a gluing mechanism located above the conveyor belt 3 is provided on the frame 1, and a circuit board positioning mechanism matching the gluing mechanism is also provided on the frame 1, and the circuit board positioning mechanism is located below the gluing mechanism. The conveyor belt 3 is marked with a plurality of circuit board placement areas 4 evenly spaced along its length direction, and the staff places the circuit board in the circuit board placement area 4 of the conveyor belt 3, and conveys the circuit board backward through the conveyor belt 3. When one of the circuit board placement areas 4 moves to the circuit board positioning mechanism, the conveyor belt 3 stops conveying, and the circuit board in the corresponding circuit board placement area 4 is positioned by the circuit board positioning mechanism, so that the circuit board is aligned with the gluing mechanism, and then the circuit board in the corresponding circuit board placement area 4 is glued by the gluing mechanism.

[0023] like Figure 1 and Figure 2 As shown, the circuit board positioning mechanism includes a mounting frame 6 driven to rise and fall by a first cylinder 5, two mounting frames 6 are arranged opposite to each other on the left and right, and a fixing plate 7 is fixedly installed on the inner side of the two vertical plates 2 by bolts, and the first cylinder 5 is fixedly installed on the two fixing plates 7 by bolts, respectively, and the piston rod of the first cylinder 5 extends downward, and the mounting frame 6 is fixedly installed on the piston rod of the corresponding first cylinder 5 by bolts. In order to improve the stability of the mounting frame 6 when it is raised and lowered, a vertically extending guide rod 8 is also welded on the mounting frame 6, and the guide rod 8 is slidably installed on the corresponding fixing plate 7.

[0024] Two push rods 9 are movably mounted on the bottom of the two mounting frames 6 along the length direction of the conveyor belt 3. The push rods 9 extend left and right along the width direction of the conveyor belt 3. The two push rods 9 are relatively arranged front and back along the length direction of the conveyor belt 3. The two push rods 9 are synchronously driven by the positive and negative threaded rods 10 to approach or move away from each other. Specifically, the two mounting frames 6 are respectively provided with mounting grooves with bottom openings, and a driving motor 11 is installed in the mounting groove by bolts. The positive and negative threaded rods 10 extending front and back along the length direction of the conveyor belt 3 are fixedly mounted on the rotating shaft of the driving motor 11 by a coupling. The end of the positive and negative threaded rods 10 away from the driving motor 11 is rotatably mounted on the inner wall of the mounting groove by a bearing. The tops of the two ends of the push rods 9 are respectively fixed with screw nuts 12 matching the positive and negative threaded rods 10 by bolts, and the two screw nuts 12 are respectively screwed on the positive and negative threaded rods 10 on the corresponding side; the positive and negative threaded rods 10 are symmetrically provided with two sections of external threads with opposite rotation directions, and the screw nuts on the two push rods 9 are respectively screwed on external threads with different rotation directions. The forward and reverse screw rods 10 are driven to rotate by the driving motor 11 , and the forward and reverse screw rods 10 act on the nuts 12 on the two push rods 9 to drive the two push rods 9 to move toward or away from each other synchronously.

[0025] Two push plates 13 are installed on the inner side of the push rod 9 and are arranged opposite to each other in the width direction of the conveyor belt 3. The bottom of the push plate 13 is flush with the bottom of the push rod 9. The two push plates 13 are driven by the second cylinder 14 to move closer to or farther from each other. Specifically, two second cylinders 14 are fixedly installed on the inner side of the push plate 13 by bolts and are arranged opposite to each other in the width direction of the conveyor belt 3. The piston rods of the second cylinders 14 extend inwardly, and the two push plates 13 are fixedly installed on the piston rods of the corresponding second cylinders 14 by bolts.

[0026] When the conveyor belt 3 drives one of the circuit board placement areas 4 to move to the circuit board positioning mechanism, the conveyor belt 3 stops conveying. At this time, the circuit board in the circuit board placement area 4 is located between the two push rods 9; the first cylinder 5 is extended to drive the mounting frame 6 to lower, and the mounting frame 6 drives the bottom of the push rod 9 and the lower end of the push plate 13 to contact the upper surface of the conveyor belt 3, and then the two push rods 9 are driven to approach each other synchronously through the positive and negative screw rods 10, so that the two push rods 9 are respectively against the front and rear sides of the circuit board, and then the second cylinder 14 is extended to drive the two push plates 13 to move inward synchronously, so that the two push plates 13 are respectively against the left and right sides of the circuit board, so that the circuit board is pushed to move to the bottom of the gluing mechanism through the push rods 9 and the push plates 13, so that the positions of multiple circuit boards are kept consistent each time the gluing is applied, so as to improve the gluing quality.

[0027] like Figure 3 As shown, the push rod 9 is in the shape of a hollow square tube, and a rotating rod 16 driven to rotate by an adjusting motor 15 is provided inside the push rod 9. The rotating rod 16 extends left and right along the width direction of the conveyor belt 3. A pressure plate 17 for pressing the circuit board located on the inner side of the push rod 9 is fixedly installed on the rotating rod 16. Two pressure plates 17 are arranged opposite to each other on the left and right, and a reserved hole 18 for the pressure plate 17 to pass through is provided on the inner side wall and the top wall of the push rod 9.

[0028] Specifically, Figure 4 As shown, the pressure plate 17 is provided with a connecting portion 19, one end of which is welded with a collar 20, which is sleeved on the rotating rod 16 and fixedly connected to the rotating rod 16 by bolts, and the end of the connecting portion 19 away from the rotating rod 16 is integrally formed with a clamping portion 21 extending between the two push rods 9, and the end of the clamping portion 21 away from the connecting portion 19 is integrally formed with a guide portion 22, and when the clamping portion 21 is rotated to the inner side of the push rod 9 and is in a horizontal state, the guide portion 22 is in a state of extending upwardly and tilted in a direction away from the clamping portion 21.

[0029] Specifically, when the first cylinder 5 extends and drives the bottom of the push rod 9 to contact the upper surface of the conveyor belt 3, the motor 15 is adjusted to drive the rotating rod 16 to rotate, so that the pressing plate 17 rotates to the inner side of the push rod 9 and the pressing part 21 of the pressing plate 17 is kept horizontal, and then the two push rods 9 are driven to approach each other synchronously through the positive and negative screws 10. In the process of the two push rods 9 approaching each other, the edge of the circuit board enters the bottom of the pressing part 21 of the pressing plate 17 along the guide part 22 of the pressing plate 17, and the edge of the circuit board is pressed by the pressing plate 17, thereby preventing the edge of the circuit board from tilting up during the process of the push rod 9 and the push plate 13 pushing the circuit board to move. When the push rod 9 and the push plate 13 push the circuit board to move to align with the glue coating mechanism, the motor 15 is adjusted to drive the rotating rod 16 to rotate, so that the pressing plate 17 rotates to the top of the push rod 9, thereby preventing the pressing plate 17 from interfering with the glue coating of the circuit board.

[0030] The push rod 9 is provided with a mounting plate 24 driven to rise and fall by the third cylinder 23, and the adjusting motor 15 and the rotating rod 16 are both mounted on the mounting plate 24. Two third cylinders 23 are arranged opposite to each other on the left and right, and the cylinder body of the third cylinder 23 is bolted to the top of the inner cavity of the push rod 9, and the piston rod of the third cylinder 23 extends downward, and the mounting plate 24 is fixedly mounted on the piston rods of the two third cylinders 23 by bolts; the adjusting motor 15 is bolted to the top of the mounting plate 24, one end of the rotating rod 16 is fixedly mounted on the rotating shaft of the adjusting motor 15 by a coupling, and the other end of the rotating rod 16 is rotatably mounted on the bearing seat, and the bearing seat is bolted to the top of the mounting plate 24. The mounting plate 24 can be raised or lowered by the extension and contraction of the third cylinder 23, so as to adjust the distance between the pressing part 21 and the upper surface of the conveyor belt 3 when the pressing part 21 is rotated to a horizontal state, so as to press circuit boards of different thicknesses by the pressing plate 17.

[0031] like Figure 1 and Figure 5As shown, the glue coating mechanism includes a portal frame 25 fixedly mounted on the frame 1, the lower ends of the two vertical walls of the portal frame 25 are respectively fixedly mounted on the tops of the two vertical plates 2 by bolts, the portal frame is provided with a first slide 26 driven by a first driving mechanism and moving left and right along the width direction of the conveyor belt 3, a first slide bar 27 extending left and right is fixedly mounted between the two vertical walls of the portal frame 25 by bolts, the first slide 26 is slidably mounted on the first slide bar 27, the first driving mechanism is a first motor 36 installed on the right vertical wall of the portal frame 25 by bolts, a first screw rod 28 arranged parallel to the first slide bar 27 is fixedly mounted on the rotating shaft of the first motor 36 by a coupling, the left end of the first screw rod 28 is rotatably mounted on the left vertical wall of the portal frame 25 by a bearing, the first slide 26 is threadedly connected to the first screw rod 28; a bracket is fixedly mounted on the bottom of the first slide 26 by bolts 29. The bracket 29 is provided with a second slide 30 which is driven by the second driving mechanism and moves forward and backward along the length direction of the conveyor belt 3. Support plates are fixedly installed at the front and rear ends of the bottom of the bracket 29 by bolts respectively. A second slide bar 31 extending forward and backward is fixedly installed between the two support plates by bolts. The second slide 30 is slidably installed on the second slide bar 31. The second driving mechanism is a second motor 32 which is installed on the support plate located on the front side by bolts. A second screw rod 33 which is arranged parallel to the second slide bar 31 is fixedly installed on the rotating shaft of the second motor 32 by a coupling. The rear end of the second screw rod 33 is rotatably installed on the support plate on the rear side by a bearing. The second slide 30 is threadedly connected to the second screw rod 33. A glue coating cylinder 34 with a piston rod extending downward is fixedly installed on the bottom of the second slide 30 by bolts, and a glue injection head 35 is fixedly installed on the piston rod of the glue coating cylinder 34 by a fixing seat.

[0032] When the push rod 9 and the push plate 13 push the circuit board to move to align with the gluing mechanism, the glue coating cylinder 34 extends to drive the glue injection head 35 to lower and approach the circuit board, and the circuit board is coated with glue by the glue injection head 35; in the process of gluing, the first motor 36 drives the first screw rod 28 to rotate, and then the first slide 26 and the bracket 29 drive the glue injection head 35 to move left and right, and the second motor 32 drives the second screw rod 33 to rotate, and then the second slide 30 drives the glue injection head 35 to move forward and backward, so as to meet different gluing needs.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A circuit board glue coating machine, characterized in that: The machine comprises a frame, on which a conveyor belt is mounted, a gluing mechanism located above the conveyor belt is disposed on the frame, and a circuit board positioning mechanism matching the gluing mechanism is also disposed on the frame; the circuit board positioning mechanism comprises a mounting frame driven to rise and fall by a first cylinder, two push rods are movably mounted on the bottom of the mounting frame along the length direction of the conveyor belt, the push rods extend along the width direction of the conveyor belt, the two push rods are arranged opposite to each other along the length direction of the conveyor belt, and the two push rods are driven by positive and negative screw rods to synchronously approach or move away from each other; two push plates arranged opposite to each other along the width direction of the conveyor belt are mounted on the inner side of the push rod, the bottom of the push plate is flush with the bottom of the push rod, and the two push plates are driven by a second cylinder to approach or move away from each other.

2. A circuit board glue coating machine as claimed in claim 1, characterized in that: The push rod is hollow and has a rotating rod driven by an adjusting motor inside. The rotating rod extends along the width direction of the conveyor belt. A pressure plate for pressing a circuit board located inside the push rod is fixedly mounted on the rotating rod. A reserved hole is provided on the push rod for the pressure plate to pass through.

3. A circuit board glue coating machine as claimed in claim 2, characterized in that: The pressure plate is provided with a connecting portion, one end of the connecting portion is fixedly mounted on the rotating rod, a clamping portion is integrally formed at one end of the connecting portion away from the rotating rod, and a guide portion is integrally formed at one end of the clamping portion away from the connecting portion, and when the clamping portion is rotated to a horizontal state on the inner side of the push rod, the guide portion is in a state of extending upwardly and tilted in a direction away from the clamping portion.

4. A circuit board glue coating machine as claimed in claim 2, characterized in that: A mounting plate driven to rise and fall by a third cylinder is arranged inside the push rod, and the regulating motor and the rotating rod are both mounted on the mounting plate.

5. A circuit board glue coating machine as claimed in claim 1, characterized in that: The glue coating mechanism includes a portal frame fixedly mounted on the frame, a first slide driven by a first driving mechanism and moving along the width direction of the conveyor belt is provided on the portal frame, a bracket is fixedly mounted on the first slide, a second slide driven by a second driving mechanism and moving along the length direction of the conveyor belt is provided on the bracket, a glue coating cylinder with a piston rod extending downward is mounted on the second slide, and a glue injection head is fixedly mounted on the piston rod of the glue coating cylinder.

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