Precise dispensing device for camera module

Abstract

The invention relates to the technical field of camera processing, in particular to a precise dispensing device for a camera module, which comprises a base, a conveying belt, a gantry bracket, a dispensing mechanism, a glue storage box, a mounting plate, a bubble removing mechanism, a feeding mechanism, a feeding control assembly, a controller and a feeding port, the two gantry supports are arranged on the left side and the right side of the top of the base correspondingly, the controller is arranged on the front sides of the gantry supports, and the conveying belt is electrically connected with the controller. Automatic feeding can be achieved, glue is prevented from making contact with a vacuum pump in the feeding process, maintenance is convenient, the technology of combining the vacuum environment and stirring is adopted, the defoaming time is shortened, the technical scheme that the two defoaming mechanisms work alternately is adopted, feeding can be conducted while defoaming work is conducted, it is not needed to wait for defoaming completion, and the production efficiency is improved. The stroke of the plunger rod is controlled by adjusting the inclination angle of the adjusting disc through the pneumatic rod, fine adjustment of the glue output amount is achieved, and the automatic production requirement is met.

Description

Technical Field

[0001] The present invention relates to the technical field of camera processing, and specifically to a precision dispensing device for camera modules. Background Art

[0002] In the production process of camera modules, precision dispensing is a crucial technological process. Traditional dispensing devices have many defects and are difficult to meet the growing demand for automated production. In existing dispensing devices, a glue gun is directly connected to a glue bucket through a glue pipe. By applying pressure to the glue bucket, the glue material in the glue bucket flows through the glue pipe into the glue gun, and the glue gun dispenses glue onto the product. Since the glue raw material is added from the outside, there may be bubbles in the added glue, and the bubbles affect the dispensing effect to a certain extent. However, existing technologies all require defoaming before working. When performing defoaming work, dispensing work cannot be carried out, which is time-consuming and laborious. Moreover, in order to stably and quantitatively extract glue, a pump is needed to transport the glue, but this technical solution is not easy to maintain, and the pneumatic solution cannot guarantee the stability of the transportation process and cannot meet the needs of large-scale automated production. In addition, most existing dispensing components adjust the glue output by adjusting the rotation angle of the motor, but due to the limited rotation accuracy of the motor, fine adjustment of the glue output cannot be achieved. Summary of the Invention

[0003] The purpose of the present invention is to provide a precision dispensing device for camera modules to solve the problems in the prior art that the defoaming of the dispensing device takes a long time, it cannot work for a long time, the pump body is not easy to maintain, and it is not easy to adjust quantitatively.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A precision dispensing device for camera modules, comprising: a base, a conveyor belt, a gantry bracket, a dispensing mechanism, a glue storage tank, a mounting plate, a defoaming mechanism, a feeding mechanism, a feeding control component, a controller, and a feeding port. The conveyor belt is arranged on the top of the base. Two gantry brackets are respectively arranged on the left and right sides of the top of the base. The controller is arranged on the front side of the gantry bracket, and the conveyor belt is electrically connected to the controller. The dispensing mechanism is arranged on the top of the two gantry brackets and is electrically connected to the controller. The glue storage tank is arranged at the rear side of the base. The mounting plate is arranged at the rear side of the two gantry brackets. The number of defoaming mechanisms is two, which are respectively fixedly installed on the left and right sides of the rear side of the mounting plate and are both electrically connected to the controller. The feeding mechanism is arranged on the right side of the glue storage tank and is electrically connected to the controller. The feeding control component is installed on the top of the conveyor belt and is electrically connected to the controller. The feeding port is arranged at the rear side of the glue storage tank.

[0005] Preferably, the purpose is to control the dispensing assembly to complete the dispensing action. The dispensing mechanism includes: a first electric control slide table, a second electric control slide table, a mounting seat, a third electric control slide table, a dispensing assembly bracket, a dispensing assembly, and a glue delivery pipe. There are two first electric control slide tables, which are respectively arranged on the tops of the two gantry brackets and are both electrically connected to the controller; the second electric control slide table is installed at the output ends of the two first electric control slide tables and is electrically connected to the controller; the mounting seat is installed at the output end of the second electric control slide table; the third electric control slide table is fixedly installed at the rear side of the mounting seat and is electrically connected to the controller; the dispensing assembly bracket is arranged at the output end of the third electric control slide table; the dispensing assembly is fixedly installed at the bottom of the dispensing assembly bracket and is electrically connected to the controller; one end of the glue delivery pipe is connected to the dispensing assembly.

[0006] Preferably, the purpose is to finely adjust the glue output of the dispensing. The dispensing assembly includes: a first housing, a glue dropping head, a partition plate, a turntable, a plunger hole, a plunger rod, a second housing, a rotating frame, an adjustment disc, a chute, a slider, a first connecting rod, a servo motor, a pneumatic rod, and a second connecting rod; the first housing is fixedly installed at the bottom of the dispensing assembly bracket; the glue dropping head is arranged at the rear side of the bottom of the first housing; the partition plate is arranged at the bottom of the inner cavity of the first housing. The partition plate divides the first housing into two front and rear inner cavities, and the glue delivery pipe is communicated with the inner cavity at the front side; the turntable is rotatably installed in the inner cavity of the first housing; there are several plunger holes, which are respectively opened along the circumference at the bottom of the turntable; there are several plunger rods, which are respectively slidably installed on the inner cavity side walls of several plunger holes; the second housing is arranged on the top of the first housing; the rotating frame is rotatably installed on the inner cavity side wall of the second housing; the adjustment disc is rotatably installed at the bottom of the rotating frame; there are several chutes, which are respectively opened along the circumference at the top of the adjustment disc; there are several sliders, which are respectively slidably installed on the inner cavity side walls of several chutes; there are several first connecting rods, one ends of which are respectively rotatably installed at the bottoms of several sliders, and the other ends are respectively rotatably installed at the tops of several plunger rods; the servo motor is fixedly installed at the top of the second housing. The output end of the servo motor is fixedly connected to the turntable, and the servo motor is electrically connected to the controller; the pneumatic rod is installed at the left side of the top of the second housing and is electrically connected to the controller; one end of the second connecting rod is rotatably installed at the output end of the pneumatic rod, and the other end is rotatably installed at the left end of the top of the rotating frame.

[0007] Preferably, it aims to provide different air pressure environments to achieve defoaming or feeding. The defoaming mechanism includes: a defoaming box, a feed pipe, a feed valve, a negative pressure pipe, a negative pressure valve, a first pressure relief pipe, a second pressure relief valve, a glue mixing mechanism, a feed pipe, and a feed valve. The defoaming box is fixedly installed at the rear side of the mounting plate; the feed pipe is inserted into the rear side of the top of the defoaming box; the feed valve is arranged at the top of the feed pipe and is electrically connected to the controller; the negative pressure pipe is arranged at the front side of the top of the defoaming box; the negative pressure valve is arranged at the top of the negative pressure pipe and is electrically connected to the controller; the first pressure relief pipe is arranged at the outer side of the top of the defoaming box; the first pressure relief valve is arranged at the top of the first pressure relief pipe and is electrically connected to the controller; the glue mixing mechanism is arranged at the top of the defoaming box and is electrically connected to the controller; the feed pipe is arranged at the bottom of the defoaming box; the feed valve is arranged at the bottom of the feed pipe and is electrically connected to the controller.

[0008] Preferably, it aims to accelerate the defoaming work and shorten the defoaming time. The glue mixing mechanism includes: a motor, a stirring frame, and stirring plates. The motor is fixedly installed at the top of the defoaming box and is electrically connected to the controller; the stirring frame is rotatably installed at the top of the inner cavity of the defoaming box and is fixedly connected to the output end of the motor; the number of stirring plates is several, which are respectively arranged on the outer side of the stirring frame, and the sizes of the several stirring plates are all different.

[0009] Preferably, it aims to provide a negative pressure or vacuum environment in the defoaming box. The feeding mechanism includes: a vacuum pump, a feeding pipe, an air extraction pipe, an exhaust pipe, a second pressure relief pipe, a second pressure relief valve, and a mixing pipe. The vacuum pump is arranged on the right side of the glue storage box and is electrically connected to the controller; one end of the feeding pipe is inserted into the top of the glue storage box, and the other end is connected to the two feed valves; the air extraction pipe is arranged on the top of the vacuum pump, and the other end is connected to the two negative pressure valves; the exhaust pipe is arranged on the top of the vacuum pump, and the other end is connected to the glue storage box; the second pressure relief pipe is arranged on the top of the glue storage box; the second pressure relief valve is arranged at the top of the second pressure relief pipe and is electrically connected to the controller; both ends of the mixing pipe are respectively connected to the two feed valves, and the other end of the glue conveying pipe is connected to the mixing pipe.

[0010] Preferably, it aims to complete the conveying and positioning of the parts to be processed. The loading control component includes: limit blocks, jigs, a sensor bracket, and limit switches. The number of limit blocks is several, and two of them are in a group and are respectively fixedly installed on the top of the conveyor belt; the number of jigs is several, which are respectively installed on the top of the conveyor belt, and the limit blocks limit the jigs; the sensor bracket is installed on the front side of the conveyor belt; the limit switches are fixedly installed on the top of the sensor bracket and are electrically connected to the controller, and the limit switches detect the limit blocks.

[0011] The beneficial effects of the present invention compared with the prior art are as follows: 1. When the feed valve and the negative pressure valve of the present invention are opened, the feeding valve is closed, and both the first pressure relief valve and the second pressure relief valve are closed, the controller controls the vacuum pump to work. The vacuum pump extracts air from the defoaming box through the air extraction pipe and injects the air into the glue storage box. Under the action of the air pressure difference, the glue is pressed into the defoaming box from the feeding pipe, realizing automatic feeding, avoiding the contact between the glue and the vacuum pump during the feeding process, and facilitating maintenance.

[0012] 2. When the feed valve and the feeding valve of the present invention are closed, the second pressure relief valve and the negative pressure valve are opened, the vacuum pump extracts air from the defoaming box to make the defoaming box achieve a vacuum effect, and the excess air is discharged through the second pressure relief valve. During this process, the controller controls the output end of the motor to drive the stirring frame to rotate, so as to better discharge the bubbles. The technology of combining the vacuum environment with stirring is adopted to shorten the defoaming time.

[0013] 3. The present invention adopts the technical scheme of alternately working of two defoaming mechanisms, which can supply materials to the dispensing assembly while discharging bubbles, without waiting for the defoaming to be completed, saving time and effort, and meeting the requirements of automated production.

[0014] 4. The output end of the pneumatic rod of the present invention pushes the rotating frame, thereby adjusting the inclination angle of the adjusting disc, and further adjusting the stroke of the plunger rod to realize fine adjustment of the glue output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 the enlarged view of A in Figure 3 is the front view of the present invention; Figure 4 is the right view of the present invention; Figure 5 is the top view of the present invention; Figure 6 is the right sectional view of the present invention; Figure 7 is the schematic structural diagram of the defoaming mechanism; Figure 8 is the right sectional view of the defoaming mechanism; Figure 9 is the schematic structural diagram of the dispensing assembly; Figure 10 is the left sectional view of the dispensing assembly; Figure 11 is the bottom sectional view of the dispensing assembly.

[0016] In the figure: 1, base; 2, conveyor belt; 3, gantry support; 4, dispensing mechanism; 41, first electric control slide; 42, second electric control slide; 43, mounting seat; 44, third electric control slide; 45, dispensing component support; 46, dispensing component; 461, first housing; 462, glue dropping head; 463, partition board; 464, turntable; 465, plunger hole; 466, plunger rod; 467, second housing; 468, rotating frame; 469, adjusting disc; 4610, chute; 4611, slider; 4612, first connecting rod; 4613, servo motor; 4614, pneumatic rod; 4615, second connecting rod; 47, glue conveying pipe; 5, glue storage tank; 6, mounting plate; 7, defoaming mechanism; 71, defoaming tank; 72, feed pipe; 73, feed valve; 74, negative pressure pipe; 75, negative pressure valve; 76, first pressure relief pipe; 77, first pressure relief valve; 78, glue mixing mechanism; 781, motor; 782, stirring frame; 783, stirring plate; 79, feeding pipe; 710, feeding valve; 8, feeding mechanism; 81, vacuum pump; 82, feeding pipe; 83, air extraction pipe; 84, exhaust pipe; 85, second pressure relief pipe; 86, second pressure relief valve; 87, mixing pipe; 9, feeding control component; 91, limit block; 92, fixture; 93, sensor support; 94, limit switch; 10, controller; 11, feeding port. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-11, to achieve the above object, the present invention provides a technical solution: a precision dispensing device for a camera module, comprising: a base 1, a conveyor belt 2, a gantry bracket 3, a dispensing mechanism 4, a glue storage tank 5, a mounting plate 6, a defoaming mechanism 7, a feeding mechanism 8, a feeding control component 9, a controller 10 and a feeding port 11. The conveyor belt 2 is arranged on the top of the base 1. Two gantry brackets 3 are respectively arranged on the left and right sides of the top of the base 1. The controller 10 is arranged on the front side of the gantry bracket 3, and the conveyor belt 2 is electrically connected to the controller 10. The dispensing mechanism 4 is arranged on the top of the two gantry brackets 3 and is electrically connected to the controller 10. The glue storage tank 5 is arranged at the rear side of the base 1. The mounting plate 6 is arranged at the rear side of the two gantry brackets 3. The number of the defoaming mechanisms 7 is two, which are respectively fixedly installed on the left and right sides of the rear side of the mounting plate 6 and are both electrically connected to the controller 10. The feeding mechanism 8 is arranged on the right side of the glue storage tank 5 and is electrically connected to the controller 10. The feeding control component 9 is installed on the top of the conveyor belt 2 and is electrically connected to the controller 10. The feeding port 11 is arranged at the rear side of the glue storage tank 5.

[0019] As a preferred solution, further, as Figure 2 , Figure 3 and Figure 4 shown, the dispensing mechanism 4 includes: a first electric control slide 41, a second electric control slide 42, a mounting seat 43, a third electric control slide 44, a dispensing component bracket 45, a dispensing component 46 and a glue delivery pipe 47. The number of the first electric control slides 41 is two, which are respectively arranged on the top of the two gantry brackets 3 and are both electrically connected to the controller 10. The second electric control slide 42 is installed at the output end of the two first electric control slides 41 and is electrically connected to the controller 10. The mounting seat 43 is installed at the output end of the second electric control slide 42. The third electric control slide 44 is fixedly installed at the rear side of the mounting seat 43 and is electrically connected to the controller 10. The dispensing component bracket 45 is arranged at the output end of the third electric control slide 44. The dispensing component 46 is fixedly installed at the bottom of the dispensing component bracket 45 and is electrically connected to the controller 10. One end of the glue delivery pipe 47 is connected to the dispensing component 46. The controller 10 controls the first electric control slide 41, the second electric control slide 42 and the third electric control slide 44 to control the dispensing component 46 to move in the front-back, left-right and up-down directions for dispensing. The dispensing component 46 can extract glue from the defoaming tank 71 through the glue delivery pipe 47.

[0020] As a preferred solution, further, as Figure 9 , Figure 10 and Figure 11As shown in the figure, the dispensing assembly 46 includes: a first housing 461, a glue dropping head 462, a partition plate 463, a turntable 464, a plunger hole 465, a plunger rod 466, a second housing 467, a rotating frame 468, an adjustment disk 469, a chute 4610, a slider 4611, a first connecting rod 4612, a servo motor 4613, a pneumatic rod 4614, and a second connecting rod 4615; the first housing 461 is fixedly installed at the bottom of the dispensing assembly bracket 45, the glue dropping head 462 is arranged at the rear side of the bottom of the first housing 461, the partition plate 463 is arranged at the bottom of the inner cavity of the first housing 461, the partition plate 463 divides the first housing 461 into two front and rear inner cavities, and the glue delivery pipe 47 is communicated with the inner cavity at the front side. The turntable 464 is rotatably installed in the inner cavity of the first housing 461. The number of the plunger holes 465 is several, which are respectively arranged along the circumference at the bottom of the turntable 464. The number of the plunger rods 466 is several, which are respectively slidably installed on the inner cavity side walls of several plunger holes 465. The second housing 467 is arranged on the top of the first housing 461. The rotating frame 468 is rotatably installed on the inner cavity side wall of the second housing 467. The adjustment disk 469 is rotatably installed at the bottom of the rotating frame 468. The number of the chutes 4610 is several, which are respectively arranged along the circumference at the top of the adjustment disk 469. The number of the sliders 4611 is several, which are respectively slidably installed on the inner cavity side walls of several chutes 4610. The number of the first connecting rods 4612 is several. One ends of the first connecting rods are respectively rotatably installed at the bottoms of several sliders 4611, and the other ends are respectively rotatably installed at the tops of several plunger rods 466. The servo motor 4613 is fixedly installed at the top of the second housing 467. The output end of the servo motor 4613 is fixedly connected to the turntable 464, and the servo motor 4613 is electrically connected to the controller 10. The controller 10 controls the output end of the servo motor 4613 to drive the turntable 464 to rotate. Under the limiting action of the adjustment disk 469, the chute 4610, the slider 4611, and the first connecting rod 4612, when the plunger rod 466 rotates to the front side of the partition plate 463, the plunger rod 466 moves upward, extracts the glue in the inner cavity at the front side of the partition plate 463 and forms a negative pressure. When the plunger rod 466 rotates to the rear side of the partition plate 463, the plunger rod 466 moves downward, and pushes the glue in the inner cavity of the plunger hole 465 into the inner cavity at the rear side of the partition plate 463. The pneumatic rod 4614 is installed at the left side of the top of the second housing 467 and is electrically connected to the controller 10. One end of the second connecting rod 4615 is rotatably installed at the output end of the pneumatic rod 4614, and the other end is rotatably installed at the left end of the top of the rotating frame 468. The controller 10 controls the output end of the pneumatic rod 4614 to pull the rotating frame 468 to rotate through the second connecting rod 4615. By controlling the tilt angle of the rotating frame 468, the stroke of the plunger rod 466 in the plunger hole 465 can be controlled, so that the glue output amount of the glue dropping head can be accurately controlled.

[0021] More specifically, the controller 10 controls the telescopic movement of the pneumatic rod 4614 according to the dispensing volume requirement, adjusts the tilt angle of the rotating frame 468 through the second connecting rod 4615, and then changes the tilt degree of the adjustment disc 469. The greater the tilt degree, the greater the radial displacement of the slider 4611 in the chute 4610, and the greater the up and down stroke of the plunger rod 466. When the turntable 464 rotates clockwise, the plunger rod 466 rotates synchronously with the turntable 464, and at the same time, the slider 4611 is forced to slide radially in the inclined chute 4610. When the plunger rod 466 rotates to the front side of the partition plate 463, the slider 4611 slides from the outer end to the inner end along the chute 4610, pulls the plunger rod 466 upward through the first connecting rod 4612, and the upward movement of the plunger rod 466 causes a negative pressure to be formed in the inner cavity on the front side of the partition plate 463, and the glue is sucked into the plunger hole 465 through the glue delivery pipe 47. When the plunger rod 466 rotates to the rear side of the partition plate 463, the slider 4611 slides from the inner end to the outer end, pushing the plunger rod 466 downward to extrude the glue to the glue dropping head 462.

[0022] Furthermore, the control process of the tilt angle of the rotating frame 468: When the controller 10 sends an instruction to increase the glue output volume, the output end of the pneumatic rod 4614 elongates, pushes the left end of the rotating frame 468 to swing downward through the second connecting rod 4615, and the rotating frame 468 rotates clockwise around the pin shaft, driving the adjustment disc 469 to form an increasing tilt angle with the left end lower and the right end higher. When it is necessary to reduce the glue output volume, the pneumatic rod 4614 contracts, and the second connecting rod 4615 pulls the left end of the rotating frame 468 to swing upward, and the tilt angle of the adjustment disc 469 decreases.

[0023] Furthermore, the stroke control of the plunger rod 466: The turntable 464 is driven by the servo motor 4613 to rotate clockwise, and the plunger rod 466 makes a circular motion with the turntable 464. At the same time, the slider 4611 slides radially in the chute 4610. When the plunger rod 466 rotates to the glue suction position on the front side of the partition plate 463, the slider 4611 slides from the outer end to the inner end of the chute 4610. Due to the inclination of the chute 4610, the height of the slider 4611 decreases, and the plunger rod 466 is pulled upward through the first connecting rod 4612.

[0024] As a preferred solution, furthermore, as Figure 7 and Figure 8As shown in the figure, the defoaming mechanism 7 includes: a defoaming box 71, a feed pipe 72, a feed valve 73, a negative pressure pipe 74, a negative pressure valve 75, a first pressure relief pipe 76, a first pressure relief valve 77, a glue mixing mechanism 78, a feed pipe 79 and a feed valve 710. The defoaming box 71 is fixedly installed at the rear side of the mounting plate 6. The feed pipe 72 is inserted into the rear side of the top of the defoaming box 71. The feed valve 73 is arranged at the top of the feed pipe 72 and is electrically connected to the controller 10. The negative pressure pipe 74 is arranged at the front side of the top of the defoaming box 71. The negative pressure valve 75 is arranged at the top of the negative pressure pipe 74 and is electrically connected to the controller 10. The first pressure relief pipe 76 is arranged at the outer side of the top of the defoaming box 71. The first pressure relief valve 77 is arranged at the top of the first pressure relief pipe 76 and is electrically connected to the controller 10. The glue mixing mechanism 78 is arranged at the top of the defoaming box 71 and is electrically connected to the controller 10. The feed pipe 79 is arranged at the bottom of the defoaming box 71. The feed valve 710 is arranged at the bottom of the feed pipe 79 and is electrically connected to the controller 10. When feeding the defoaming box 71, the feed valve 73 and the negative pressure valve 75 corresponding to the defoaming box 71 are opened, the feed valve 710 is closed, and both the first pressure relief valve 77 and the second pressure relief valve 86 are closed. The controller 10 controls the vacuum pump 81 to work. The vacuum pump 81 extracts air from the defoaming box 71 through the suction pipe 83 and injects the air into the glue storage tank 5. Under the action of the air pressure difference, the glue is pressed into the defoaming box 71 from the feed pipe 79 to achieve automatic feeding. After the defoaming box 71 is filled with glue, the feed valve 73 is closed, the second pressure relief valve 86 is opened, and the vacuum pump 81 continues to extract air from the defoaming box 71 to make the defoaming box 71 achieve a vacuum effect. The excess air is discharged through the second pressure relief valve 86. During this process, the controller 10 controls the output end of the motor 781 to drive the stirring frame 782 to rotate, so as to better discharge the bubbles.

[0025] As a preferred solution, further, as Figure 8 shown, the glue mixing mechanism 78 includes: a motor 781, a stirring frame 782 and a stirring plate 783. The motor 781 is fixedly installed at the top of the defoaming box 71 and is electrically connected to the controller 10. The stirring frame 782 is rotatably installed at the top of the inner cavity of the defoaming box 71 and is fixedly connected to the output end of the motor 781. The number of the stirring plates 783 is several, which are respectively arranged on the outer side of the stirring frame 782. The sizes of the several stirring plates 783 are all different, so as to better mix the glue and accelerate the discharge of the bubbles.

[0026] As a preferred solution, further, as Figure 4 、 Figure 5 and Figure 6As shown in the figure, the feeding mechanism 8 includes: a vacuum pump 81, a feeding pipe 82, an air extraction pipe 83, an exhaust pipe 84, a second pressure relief pipe 85, a second pressure relief valve 86, and a mixing pipe 87. The vacuum pump 81 is arranged on the right side of the glue storage tank 5 and is electrically connected to the controller 10. One end of the feeding pipe 82 is inserted into the top of the glue storage tank 5, and the other end is connected to two feeding valves 73. The air extraction pipe 83 is arranged on the top of the vacuum pump 81, and the other end is connected to two negative pressure valves 75. The exhaust pipe 84 is arranged on the top of the vacuum pump 81, and the other end is connected to the glue storage tank 5. The second pressure relief pipe 85 is arranged on the top of the glue storage tank 5, and the second pressure relief valve 86 is arranged on the top of the second pressure relief pipe 85 and is electrically connected to the controller 10. Both ends of the mixing pipe 87 are respectively connected to two feeding valves 710, and the other end of the glue delivery pipe 47 is connected to the mixing pipe 87.

[0027] As a preferred solution, further, as Figure 2 shown in the figure, the feeding control assembly 9 includes: a limit block 91, a fixture 92, a sensor bracket 93, and a limit switch 94. The number of limit blocks 91 is several, and two of them are fixed to the top of the conveyor belt 2 as a group. The number of fixtures 92 is several, which are respectively installed on the top of the conveyor belt 2, and the limit block 91 limits the fixture 92. The sensor bracket 93 is installed on the front side of the conveyor belt 2, and the limit switch 94 is fixedly installed on the top of the sensor bracket 93 and is electrically connected to the controller 10. The limit switch 94 detects the limit block 91, and the controller 10 controls the operation of the conveyor belt 2. When the limit switch 94 detects the limit block 91, the fixture 92 reaches the processing position.

[0028] The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

[0029] Step 1, the operator pours glue into the glue storage tank 5 from the feeding port 11 and closes the feeding port 11, places the parts to be processed on the top of the fixture 92, and the controller 10 controls the operation of the conveyor belt 2. When the limit switch 94 detects the limit block 91, the fixture 92 reaches the processing position. The controller 10 controls the first electric control slide 41, the second electric control slide 42, and the third electric control slide 44 to control the operation of the dispensing assembly 46 in the front-back, left-right, and up-down directions, so as to perform dispensing. The dispensing assembly 46 can extract glue from the defoaming tank 71 through the glue delivery pipe 47. Step 2, when feeding the defoaming tank 71, the feeding valve 73 and the negative pressure valve 75 corresponding to the defoaming tank 71 are opened, the feeding valve 710 is closed, both the first pressure relief valve 77 and the second pressure relief valve 86 are closed, and the controller 10 controls the vacuum pump 81 to work. The vacuum pump 81 extracts air from the defoaming tank 71 through the air extraction pipe 83 and injects the air into the glue storage tank 5. Under the action of the pressure difference, the glue is pressed into the defoaming tank 71 from the feeding pipe 79 to achieve automatic feeding. Step 3: After the defoaming tank 71 is filled with glue, close the feed valve 73, open the second pressure relief valve 86, and the vacuum pump 81 continues to extract air from the defoaming tank 71 to achieve a vacuum effect in the defoaming tank 71. The excess air is discharged through the second pressure relief valve 86. During this process, the controller 10 controls the output end of the motor 781 to drive the stirring frame 782 to rotate, so as to better discharge the bubbles. Step 4: When the defoaming tank 71 can supply materials to the dispensing assembly 46, open the first pressure relief valve 77 to balance the air pressure and open the feed valve 710. Step 5: The controller 10 controls the output end of the servo motor 4613 to drive the turntable 464 to rotate. Under the limiting action of the adjustment plate 469, the chute 4610, the slider 4611, and the first connecting rod 4612, when the plunger rod 466 rotates to the front side of the partition plate 463, the plunger rod 466 moves upward to extract the glue in the inner cavity on the front side of the partition plate 463 and form a negative pressure. When the plunger rod 466 rotates to the rear side of the partition plate 463, the plunger rod 466 moves downward to push the glue in the inner cavity of the plunger hole 465 into the inner cavity on the rear side of the partition plate 463. Step 6: The controller 10 controls the output end of the pneumatic rod 4614 to pull the rotating frame 468 to rotate through the second connecting rod 4615. By controlling the inclination angle of the rotating frame 468, the stroke of the plunger rod 466 in the plunger hole 465 can be controlled, so as to accurately control the glue output of the dispensing head.

[0030] The present invention can supply materials to the dispensing assembly while performing the defoaming work, can achieve continuous operation, and the glue does not directly contact the pump body, which is convenient for maintenance. The glue output of the dispensing head can be accurately adjusted to meet the requirements of automated production.

[0031] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent.

Claims

1. A precision dispensing device for a camera module, comprising: A base (1), a conveyor belt (2), a gantry bracket (3), and a controller (10). The conveyor belt (2) is arranged on the top of the base (1). Two gantry brackets (3) are respectively arranged on the left and right sides of the top of the base (1). The controller (10) is arranged on the front side of the gantry bracket (3), and the conveyor belt (2) is electrically connected to the controller (10). It is characterized in that the precision dispensing device for the camera module further includes: A dispensing mechanism (4) arranged on the tops of the two gantry brackets (3) and electrically connected to the controller (10); A glue storage tank (5) arranged at the rear side of the base (1); A mounting plate (6) arranged at the rear sides of the two gantry brackets (3); Two defoaming mechanisms (7) respectively fixedly installed on the left and right sides of the rear side of the mounting plate (6) and both electrically connected to the controller (10); A feeding mechanism (8) arranged on the right side of the glue storage tank (5) and electrically connected to the controller (10); A feeding control component (9) installed on the top of the conveyor belt (2) and electrically connected to the controller (10); A feeding port (11) arranged at the rear side of the glue storage tank (5).

2. The precision dispensing device for a camera module according to claim 1, characterized in that, The dispensing mechanism (4) includes: Two first electric control slides (41) respectively arranged on the tops of the two gantry brackets (3) and both electrically connected to the controller (10); A second electric control slide (42) installed at the output ends of the two first electric control slides (41) and electrically connected to the controller (10); A mounting seat (43) installed at the output end of the second electric control slide (42); A third electric control slide (44) fixedly installed at the rear side of the mounting seat (43) and electrically connected to the controller (10); A dispensing component bracket (45) arranged at the output end of the third electric control slide (44); A dispensing component (46) fixedly installed at the bottom of the dispensing component bracket (45) and electrically connected to the controller (10); A glue delivery pipe (47) with one end connected to the dispensing component (46).

3. The precision dispensing device for a camera module according to claim 2, wherein, The dispensing component (46) includes: A first housing (461) fixedly installed at the bottom of the dispensing component bracket (45); A glue dropping head (462) arranged at the rear side of the bottom of the first housing (461); A partition plate (463) arranged at the bottom of the inner cavity of the first housing (461). The partition plate (463) divides the first housing (461) into two front and rear inner cavities, and the glue delivery pipe (47) is communicated with the front inner cavity; A turntable (464) rotatably installed in the inner cavity of the first housing (461); A plurality of plunger holes (465) respectively opened along the circumferential direction at the bottom of the turntable (464); A plurality of plunger rods (466) respectively slidably installed in the inner cavity side walls of the plurality of plunger holes (465); A second housing (467) arranged on the top of the first housing (461); A rotating rack (468) is rotatably installed on the inner cavity side wall of the second housing (467); An adjustment disk (469) is rotatably installed at the bottom of the rotating rack (468); A plurality of chutes (4610) are circumferentially formed on the top of the adjustment disk (469); A plurality of sliders (4611) are slidably installed on the inner cavity side walls of the plurality of chutes (4610); A plurality of first connecting rods (4612) have one ends rotatably installed at the bottoms of the plurality of sliders (4611) respectively, and the other ends rotatably installed at the tops of the plurality of plunger rods (466) respectively; A servo motor (4613) is fixedly installed on the top of the second housing (467). The output end of the servo motor (4613) is fixedly connected to a turntable (464), and the servo motor (4613) is electrically connected to a controller (10); A pneumatic rod (4614) is installed on the left side of the top of the second housing (467) and is electrically connected to the controller (10); A second connecting rod (4615) has one end rotatably installed at the output end of the pneumatic rod (4614), and the other end rotatably installed at the left end of the top of the rotating rack (468).

4. The precision dispensing device for a camera module according to claim 3, characterized in that, The defoaming mechanism (7) includes: A defoaming box (71) is fixedly installed at the rear side of the mounting plate (6); A feed pipe (72) is inserted into the rear side of the top of the defoaming box (71); A feed valve (73) is arranged at the top of the feed pipe (72) and is electrically connected to the controller (10); A negative pressure pipe (74) is arranged at the front side of the top of the defoaming box (71); A negative pressure valve (75) is arranged at the top of the negative pressure pipe (74) and is electrically connected to the controller (10); A first pressure relief pipe (76) is arranged at the outer side of the top of the defoaming box (71); A first pressure relief valve (77) is arranged at the top of the first pressure relief pipe (76) and is electrically connected to the controller (10); A glue mixing mechanism (78) is arranged at the top of the defoaming box (71) and is electrically connected to the controller (10); A feed pipe (79) is arranged at the bottom of the defoaming box (71); A feed valve (710) is arranged at the bottom of the feed pipe (79) and is electrically connected to the controller (10).

5. The precision dispensing device for a camera module according to claim 4, wherein, The glue mixing mechanism (78) includes: A motor (781) is fixedly installed on the top of the defoaming box (71) and is electrically connected to the controller (10); A stirring rack (782) is rotatably installed at the top of the inner cavity of the defoaming box (71) and is fixedly connected to the output end of the motor (781); A plurality of stirring plates (783) are respectively arranged on the outer side of the stirring rack (782).

6. The precision dispensing device for a camera module according to claim 5, characterized in that, The sizes of the plurality of stirring plates (783) are all different.

7. The precision dispensing device for a camera module according to claim 6, characterized in that, The feeding mechanism (8) includes: A vacuum pump (81) is arranged on the right side of the glue storage tank (5) and is electrically connected to the controller (10); The feeding pipe (82) has one end inserted into the top of the glue storage tank (5) and the other end connected to the two feeding valves (73). The air extraction pipe (83) is arranged on the top of the vacuum pump (81), and the other end is connected to the two negative pressure valves (75). The exhaust pipe (84) is arranged on the top of the vacuum pump (81), and the other end is connected to the glue storage tank (5). The second pressure relief pipe (85) is arranged on the top of the glue storage tank (5). The second pressure relief valve (86) is arranged on the top of the second pressure relief pipe (85) and is electrically connected to the controller (10). The mixing pipe (87) has two ends respectively connected to the two feeding valves (710), and the other end of the glue conveying pipe (47) is connected to the mixing pipe (87).

8. The precision dispensing device for a camera module according to claim 7, characterized in that, The feeding control assembly (9) includes: A plurality of limit blocks (91), with two in a group and fixedly installed on the top of the conveyor belt (2). A plurality of jigs (92) are respectively installed on the top of the conveyor belt (2), and the limit blocks (91) limit the jigs (92). The sensor bracket (93) is installed on the front side of the conveyor belt (2). The limit switch (94) is fixedly installed on the top of the sensor bracket (93) and is electrically connected to the controller (10). The limit switch (94) detects the limit blocks (91).

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