CN218213680U - Conducting resin system of dripping based on light intensity change is judged - Google Patents
Conducting resin system of dripping based on light intensity change is judged Download PDFInfo
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- CN218213680U CN218213680U CN202221437304.0U CN202221437304U CN218213680U CN 218213680 U CN218213680 U CN 218213680U CN 202221437304 U CN202221437304 U CN 202221437304U CN 218213680 U CN218213680 U CN 218213680U
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Abstract
The utility model provides a conductive adhesive dripping system based on light intensity change judgment, which comprises a conductive adhesive dripping system; the conductive adhesive dripping system comprises a dripper, an optical detection assembly sleeved on the dripper, a light source, an optical fiber circulator, a light intensity detection device, a control module and an alarm device; the light source emits light rays which sequentially pass through the first port, the second port, the optical fiber and the self-focusing lens of the optical fiber circulator and then are emitted out, and the light rays are reflected by the reflector and sequentially pass through the self-focusing lens and the optical fiber circulator and then reach the light intensity detection device; detecting the light intensity change through a light intensity detection device to monitor whether the conductive adhesive drips or not; the control module is respectively electrically connected with the light intensity detection device and the alarm device; the control module controls the alarm device to give an alarm when judging that the dripper is abnormal in dripping; the utility model discloses can monitor the position that conductive adhesive dripped under strong electromagnetic interference's the condition.
Description
Technical Field
The utility model relates to a show technical field, concretely relates to conducting resin system of dripping based on light intensity changes and judges.
Background
In the liquid crystal display industry, a liquid crystal display panel is generally powered by an upper substrate and a lower substrate simultaneously, and the electric field of each pixel unit is controlled by a circuit to achieve the purpose of controlling the deflection of liquid crystal, so that the control of the light intensity of a single pixel point is realized. At present, the upper and lower substrates are electrically connected to each other through a conductive adhesive (usually gold adhesive), and when the conductive adhesive is dropped in an abnormal area, the problems of electrostatic breakdown or short circuit of the liquid crystal panel are easily caused, so it is necessary to determine whether the conductive adhesive is dropped at a designated position in the process of dropping the conductive adhesive.
Patent application No. 201910221646.5, published as: 2019.05.24, a conductive adhesive dripping system and a conductive adhesive dripping method are provided, in which an induction coil is sleeved on a dripper, and a control module electrically connected to the induction coil is provided, the induction coil is located outside one end of the dripper, where an outlet of a conductive adhesive channel is provided, the control module energizes the induction coil to generate a magnetic field, when a conductive adhesive drips from the outlet of the conductive adhesive channel of the dripper, a change in the magnetic field is caused, resulting in a change in current on the induction coil, and at this time, the control module obtains a position coordinate of the dripper, and when the position coordinate is a preset specified coordinate, the dripper is determined to perform normal dripping operation, otherwise, the dripper is determined to be abnormal, so as to alarm and effectively monitor the dripping position of the conductive adhesive.
According to the technical scheme disclosed by the patent document, the conductive adhesive dripping system can achieve a normal effect only under the condition of no electromagnetic interference or weak electromagnetic interference because the inductive coil is sleeved on the dripping head and the detection is realized by generating a magnetic field by electrifying the inductive coil; however, when a certain amount of electromagnetic interference exists in the processing environment, the conductive adhesive is likely to drop to cause misjudgment, and further the processing of the product is affected. For this reason, there is a need for a conductive paste dripping system that is less susceptible to electromagnetic interference and that can monitor the position of dripping of conductive paste.
Disclosure of Invention
The utility model provides a conducting resin system of dripping based on light intensity changes judgement utilizes the utility model discloses a dripper is kept away from through light source, light intensity detection device, the control module that will produce electromagnetic interference to the structure, and conducting resin system of dripping can be difficult for under the circumstances that receives electromagnetic interference, monitors conducting resin position of dripping, simultaneously, takes the mode of optics to detect, and feedback speed is fast, detects the accuracy.
In order to achieve the above purpose, the technical scheme of the utility model is that: a conductive adhesive dripping system based on light intensity change judgment comprises a conductive adhesive dripping system; the conductive adhesive dripping system comprises a dripper, an optical detection assembly fixed on the dripper, a light source, an optical fiber circulator, a light intensity detection device, a control module and an alarm device.
A conductive adhesive channel is arranged in the dripper, and an outlet of the conductive adhesive channel is arranged at the lower end of the dripper; the dripper is used for dripping the conductive adhesive passing through the outlet of the conductive adhesive channel to the substrate; the light detection assembly is arranged below the outlet; the optical detection assembly comprises a self-focusing lens and a reflector; the self-focusing lens and the reflector are respectively positioned at two sides of the dripper.
The first port of the optical fiber circulator is connected with the light source through an optical fiber, the second port of the optical fiber circulator is connected with one end of the self-focusing lens through an optical fiber, the other end of the self-focusing lens faces to the position right below the outlet of the conductive adhesive channel, and the central axis of the self-focusing lens is perpendicular to the axis of the outlet of the conductive adhesive channel; the reflector is arranged towards the self-focusing lens; the light source emits light rays which sequentially pass through the first port, the second port, the optical fibers and the self-focusing lens of the optical fiber circulator and then are emitted out, and the light rays which sequentially pass through the self-focusing lens and the optical fiber circulator and then reach the light intensity detection device after being reflected by the reflector.
The control module is respectively electrically connected with the light intensity detection device and the alarm device.
The light source is started, the optical signal enters the first port of the optical fiber circulator through the optical fiber, is emitted from the second port under the non-reversible action of the optical fiber circulator and enters the self-focusing lens through the optical fiber, and the optical signal passes through the self-focusing lens and then is emitted to the reflector; after being reflected by the reflector, the optical signal enters the second port of the optical fiber circulator after passing through the self-focusing lens, is emitted out from the third port of the optical fiber circulator under the non-reversible action of the optical fiber circulator and is transmitted to the light intensity detection device through the optical fiber; therefore, the light intensity detection device can detect the light intensity below the outlet of the conductive adhesive channel; when the conductive adhesive drips from the outlet of the conductive adhesive channel in the dripper, the conductive adhesive passes through a light path formed between the self-focusing lens and the reflector, so that an optical signal is shielded, therefore, when the conductive adhesive drips, the light intensity detection device can detect that the light intensity value changes, and when the light intensity value is smaller than a preset light intensity value, the control module judges that the conductive adhesive normally drips; therefore, the light source, the light intensity detection device, the control module and other devices which can generate electromagnetic interference are far away from the water dropper, the conductive adhesive dripping system can monitor the dripping position of the conductive adhesive under the condition that the conductive adhesive dripping system is not easily subjected to the electromagnetic interference, and meanwhile, the optical mode is adopted for detection, so that the feedback speed is high, and the detection is accurate.
Further, the device also comprises a frame, wherein the substrate is placed on the frame; the dripper is arranged on the frame through a power mechanism; the power mechanism comprises a bracket, an X-axis drive, an X-axis moving frame, a Z-axis drive and a Z-axis moving frame; the support is arranged on the rack, the X-axis drive is arranged between the support and the X-axis moving frame, the Z-axis drive is arranged between the Z-axis moving frames, and the dripper is arranged on the Z-axis moving frame; the control module determines the current coordinate value of the dripper by acquiring signals of the X-axis drive and the Z-axis drive. Therefore, the current coordinate value of the dripper can be indirectly, conveniently and accurately acquired.
Furthermore, the support is of a frame structure, the support is formed by connecting four beams end to end, a moon pool is formed in the support, and the support is fixed on the rack; the X-axis drive is installed at the front and the rear of the support and comprises an X-axis servo motor, an X-axis screw rod and an X-axis nut, the X-axis servo motor is installed on the support, the X-axis screw rod is installed on the support through an X-axis bearing seat and an X-axis bearing, and the X-axis nut is meshed on the X-axis screw rod.
The X-axis moving frame is fixed on an X-axis nut, guide rods are respectively arranged on the support and positioned at two sides of the X-axis screw rod, and a guide block for the guide rods to slide through is arranged on the X-axis moving frame.
The Z-axis drive is arranged on the X-axis moving frame and comprises a Z-axis servo motor, a Z-axis lead screw and a Z-axis nut, the Z-axis servo motor is arranged on the X-axis moving frame, the Z-axis lead screw is arranged on the X-axis moving frame through a Z bearing seat and a Z bearing, and the Z-axis nut is meshed on the Z-axis lead screw; guide rails are respectively arranged on the X-axis moving frame and positioned on two sides of the Z-axis screw rod, a sliding block is arranged at the bottom of the Z-axis moving frame, the sliding block is arranged on the guide rails in a sliding manner, the Z-axis moving frame is fixed on a Z-axis nut, and one end of the Z-axis moving frame protrudes out of one side of the X-axis moving frame and is positioned above the moon pool; a mounting hole is formed in the protruding part of the Z-axis moving frame; the dripper is placed on the mounting hole.
When the control module controls the X-axis servo motor to work, the X-axis servo motor drives the X-axis screw rod to rotate, the rotation of the X-axis screw rod drives the X-axis nut to move linearly, and therefore the X-axis moving frame, the Z-axis driving frame and the Z-axis moving frame can be driven to move along the X-axis direction. When the control module controls the Z-axis servo motor to work, the Z-axis servo motor drives the Z-axis screw rod to rotate, and the rotation of the Z-axis screw rod drives the Z-axis nut to move linearly, so that the Z-axis moving frame is driven to move along the Z axis. In the process, signals of the X-axis servo motor and the Z-axis servo motor are acquired through the control module, and coordinate values of the drippers are obtained.
Further, the inlet of the conductive adhesive channel is arranged at the upper end of the dripper.
Furthermore, the device also comprises a conductive adhesive supply device communicated with the inlet of the conductive adhesive channel through the conductive adhesive channel.
Furthermore, the conductive adhesive supply device comprises an adhesive barrel, a pump arranged in the adhesive barrel and a delivery pipe connected to the outlet of the pump, wherein the delivery pipe is communicated with the conductive adhesive channel; the control module is connected with the pump. In this way, a better provision of the conductive paste can be achieved.
Further, the self-focusing lens is a lens rod.
Further, a sleeve is sleeved outside the lens rod; the optical fiber comprises a fiber core and a protective layer covering the fiber core, one end part of the sleeve is bonded with the protective layer of the optical fiber, and the central axis of the sleeve is vertical to the axis of the outlet of the conductive adhesive channel; thus, the optical signal in the optical fiber can be incident on the lens rod as much as possible, and the detection accuracy is improved.
Further, the light intensity detection device is a PD detector.
Further, the reflector is a right-angle reflector.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic diagram of the focusing function of the self-focusing lens of the present invention.
Fig. 3 is a schematic diagram of the collimating effect of the self-focusing lens of the present invention.
Fig. 4 is a schematic structural diagram of a junction between a lens rod and an optical fiber according to an embodiment of the present invention.
Fig. 5 is a schematic sectional view of the middle dripper, the conductive adhesive passage and the bracket of the present invention.
Fig. 6 is a schematic view of a conductive paste supplying apparatus and a dropping head.
Fig. 7 is a front view of the power mechanism.
Figure 8 is a top view of the power mechanism.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 5, a conductive paste dropping system judged based on a change in light intensity includes a conductive paste dropping system; the conductive adhesive dripping system comprises a dripper 1, an optical detection assembly fixed on the dripper 1, a light source 3, an optical fiber circulator 32, a light intensity detection device 4, a control module 5 and an alarm device 6; in this embodiment, the dripper 1 is provided with a bracket 10a for mounting a pipe inspection assembly. In fig. 4, arrows indicate the propagation direction of optical signals between the optical detection modules.
As shown in fig. 5, a conductive adhesive channel 11 is arranged in the dripper 1, and an outlet 112 of the conductive adhesive channel 11 is arranged at the lower end of the dripper 1; the dripper 1 is used for dripping the conductive adhesive which passes through the outlet 112 of the conductive adhesive channel 11 to the substrate 2; the light detection assembly is disposed below the outlet 112; the light detection assembly comprises a self-focusing lens 33 and a reflector 34, and the self-focusing lens 33 and the reflector 34 are respectively positioned at two sides of the dripper. In the present embodiment, the inlet 111 of the conductive adhesive channel 11 is disposed at the upper end of the dripper 1; as shown in fig. 6, the conductive adhesive supply device 2a includes a glue barrel 21a, a pump 22a disposed in the glue barrel 21a, and a delivery pipe 23a connected to the outlet of the pump, the delivery pipe 23a is communicated with the inlet 111, the control module 5 is connected to the pump 22a, and the upper end of the delivery pipe 23a is a hose long enough for the dripper to move within the substrate. This structure, through control module 5 control pump 22a work, when pump 22a work, then with the conductive adhesive pump of gluing in the bucket 21a to the conveyer pipe, provide conductive adhesive for the body through the conveyer pipe. The glue barrel is placed on the frame 20.
The substrate processing device further comprises a frame 20, wherein the substrate 2 is placed on the frame 20; the dripper 1 is mounted on a frame 20 through a power mechanism 70, and the frame 20 clamps the delivery pipe 23. As shown in fig. 7 and 8, the power mechanism 70 includes a bracket 71, an X-axis drive, an X-axis moving frame 73, a Z-axis drive, and a Z-axis moving frame 75.
The support 71 is a frame structure, the support 71 is formed by connecting four beams end to end, a moon pool 711 is formed in the support 71, and the support 71 is fixed on the frame 20. The front part and the rear part of the bracket 71 are provided with X-axis drives, the X-axis drives comprise an X-axis servo motor 721, an X-axis screw 722 and an X-axis nut 723, the X-axis servo motor 721 is arranged on the bracket 71, the X-axis screw 722 is arranged on the bracket 71 through an X-axis bearing block 724 and an X-axis bearing 725, and the X-axis nut 723 is meshed on the X-axis screw 722.
The X-axis moving frame 73 is fixed to an X-axis nut 723, guide rods are provided on the bracket 71 on both sides of the X-axis lead screw 722, and a guide block through which the guide rods slide is provided on the X-axis moving frame 73, whereby the movement of the X-axis moving frame 73 can be guided.
The Z-axis drive is mounted on the X-axis moving frame 73, and includes a Z-axis servo motor 741, a Z-axis screw 742 and a Z-axis nut (not shown), the Z-axis servo motor 741 is mounted on the X-axis moving frame 73, the Z-axis screw 742 is mounted on the X-axis moving frame 73 through a Z-bearing block 744 and a Z-bearing (not shown), and the Z-axis nut is engaged with the Z-axis screw 742. Guide rails 746 are respectively provided on both sides of the Z-axis screw 742 on the X-axis moving frame 73, a slider 747 is provided at the bottom of the Z-axis moving frame 75, the slider 747 is slidably provided on the guide rails 746, the Z-axis moving frame 75 is fixed to a Z-axis nut, and one end of the Z-axis moving frame 75 protrudes from one side of the X-axis moving frame 73 and is located above the moon pool 711. A mounting hole 751 is provided in a protruding portion of the Z-axis moving frame 75. The dripper 1 is placed on the mounting hole 751.
When the control module controls the X-axis servo motor 721 to work, the X-axis servo motor 721 drives the X-axis lead screw 722 to rotate, and the rotation of the X-axis lead screw drives the X-axis nut 723 to move linearly, so that the X-axis moving frame 73, the Z-axis drive and the Z-axis moving frame 75 can be driven to move along the X-axis direction. When the control module controls the Z-axis servo motor 741 to work, the Z-axis servo motor 741 drives the Z-axis screw 742 to rotate, and the rotation of the Z-axis screw 742 drives the Z-axis nut to move linearly, so as to drive the Z-axis moving frame 75 to move along the Z-axis. In the process, signals of the X-axis servo motor and the Z-axis servo motor are acquired through the control module, and coordinate values of the dripper 1 are obtained.
A first port of the optical fiber circulator 32 is connected with the light source 3 through an optical fiber 31, a second port of the optical fiber circulator 32 is connected with one end of a self-focusing lens 33 through the optical fiber 31, the other end of the self-focusing lens 33 faces to one side right below an outlet 111 of the conductive adhesive channel 11, and a central axis of the self-focusing lens 33 is perpendicular to an axis of the outlet 111 of the conductive adhesive channel 11; the reflector 34 is disposed on the other side right below the outlet 111 of the conductive adhesive channel 11, and the reflector 34 is disposed toward the self-focusing lens 33; the light source 3 emits light rays, the light rays sequentially pass through the first port and the second port of the optical fiber circulator 32, the optical fiber 31 and the self-focusing lens 33 and then are emitted out, and the light rays are reflected by the reflector 34 and sequentially pass through the self-focusing lens 33 and the optical fiber circulator 32 and then reach the light intensity detection device 4; the light intensity change is detected by the light intensity detection device 4 to monitor whether the conductive paste is dropped.
The control module 5 is respectively electrically connected with the light intensity detection device 4 and the alarm device 6. The control module may be a CPU, a PLC, or the like.
The control module 5 controls the alarm device 6 to give an alarm when judging that the dripper 1 has the dripping abnormality.
The control method comprises the following steps:
s1, presetting coordinate values of conductive adhesive to be dripped on a substrate in a control module 5, wherein the coordinate values are set in sequence according to the sequence of the conductive adhesive to be dripped. The control module 5 acquires the current coordinate value of the dripper 1; the acquisition method comprises the following steps: and obtaining through an X-axis servo motor and a Z-axis motor.
S2, judging whether the current coordinate value of the dripper 1 is a preset coordinate value, wherein the preset coordinate value is corresponding to the coordinate value of the conductive adhesive needing to be dripped on the substrate, if so, S3, otherwise, adjusting the position of the dripper 1 and then S3, wherein the steps are as follows: the control module 5 is used for controlling the dripper 1 to perform the following steps according to the current coordinate value (x) of the dripper 1 ，z 1 ) With preset coordinate values (x) 0 ，z 0 ) Then the control module 5 controls a power mechanism for driving the dripper to move to drive the dripper to move for calculating the difference; for example, at the current position of the dripper 1, the coordinate value of the conductive paste to be dripped on the substrate 2 should be (5,3), and then the preset coordinate value of the dripper 1 should also be (5,3), and the control module 5 obtains (5.1,2.9) in the actual acquisition process, and then the difference value in the X-axis direction is 0.1, and the difference value in the Z-axis direction is-0.1, so that the dripper 1 should be adjusted to 0.1 in the negative direction in the X-axis direction and to 0.1 in the positive direction in the Z-axis direction.
S3, starting the light source 3, enabling the optical signal to enter a first port of the optical fiber circulator 32 through the optical fiber 31, enabling the optical signal to enter the self-focusing lens 33 from a second port, and enabling the optical signal to emit to the reflector 34 after passing through the self-focusing lens 33; after being reflected by the reflector 34, the optical signal enters the second port of the optical fiber circulator 32 through the self-focusing lens 33, and exits from the third port of the optical fiber circulator 32, and the optical signal is transmitted to the light intensity detection device 4 through the optical fiber 31.
And S4, detecting the light intensity by the light intensity detection device 4.
S5, dripping conductive adhesive on the substrate 2 by the dripper 1; when the control module 5 judges that the light intensity value is smaller than the preset light intensity value, the dripper 1 is judged to carry out normal dripping operation, otherwise, the dripper 1 is judged to have dripping abnormality, and the step S6 is carried out. In the present invention, if the intensity of light when no conductive paste is dropped is a, when conductive paste is dropped, the intensity of light becomes weak due to shielding by the conductive paste, and if b is set to be b, b is smaller than a.
And S6, the control module 5 outputs a signal to the alarm device 6, and the alarm device 6 gives an alarm.
According to the system, the position of the dripper is judged firstly, the position of the dripper corresponds to a preset coordinate value, and the accuracy of the dripping position of the conductive adhesive is ensured; starting the light source 3, wherein an optical signal enters a first port of the optical fiber circulator 32 through the optical fiber 31, is emitted from a second port under the non-reversible action of the optical fiber circulator 32, and is emitted into the self-focusing lens 33 through the optical fiber 31, the self-focusing lens can refract light transmitted along the axial direction and gradually reduce the distribution of refractive index along the radial direction, so that the emergent light is smoothly and continuously converged to one point, and the optical signal is emitted to the reflector 34 after passing through the self-focusing lens 33; after being reflected by the reflector 34, the optical signal enters the second port of the optical fiber circulator 32 after passing through the self-focusing lens 33, and is emitted out from the third port of the optical fiber circulator 32 under the non-reversible action of the optical fiber circulator 32 and transmitted to the light intensity detection device 4 through the optical fiber 31; thus, the light intensity detection device 4 can detect the light intensity below the outlet 112 of the conductive adhesive channel 11; when the conductive adhesive is dripped from the outlet 112 of the conductive adhesive channel 11 in the dripper 1, the conductive adhesive passes through the optical path formed between the self-focusing lens 33 and the reflector 34, so that an optical signal is shielded, therefore, when the conductive adhesive is dripped, the light intensity detection device 4 can detect the light intensity value to generate amplitude variation, and when the amplitude variation is larger than a preset variable amplitude value, the control module 5 judges that the conductive adhesive is normally dripped, acquires the current position coordinate of the dripper 1, and judges whether the current position coordinate is a preset designated coordinate; if the current position coordinate of the dripper 1 is not in the preset designated coordinate, judging that the dripper 1 is abnormally whirl-coated at a non-designated position; like this, need not to set up solenoid and produce the magnetic field and realize detecting in the one end of gluing the head, and keep away from the water dropper through equipment such as light source, light intensity detection device, the control module that will produce electromagnetic interference, conducting resin system of dripping can be difficult for receiving under the electromagnetic interference's the condition, monitors the position that conducting resin dripped, simultaneously, takes optical mode to detect, and feedback speed is fast, detects accurately.
The light intensity detection device 4 is a PD detector; the light intensity detection device 4 converts the optical signal obtained by the transmission of the optical fiber 31 into an electrical signal and transmits the electrical signal to the control module 5, and then the control module 5 judges whether the conductive adhesive is normally dripped according to the change of the electrical signal.
The self-focusing lens 33 is a lens rod; the reflector 34 is a right-angle reflector; in the above arrangement, the optical signal emitted from the second port of the optical fiber circulator 32 enters the lens rod through the optical fiber 31, and the optical signal is directed to the parallel light 7 emitted from the optical fiber 31 and then emitted to the reflector 34 under the collimation effect of the lens rod; because the reflector 34 is a right-angle reflector, the optical signal incident into the reflector 34 can be reflected at the same angle to enter the lens rod, the optical signal reflected to enter the lens rod enters the optical fiber 31 connected with the second port of the circulator under the focusing effect, and then the reflected optical signal is emitted from the third port under the non-reversible effect of the optical fiber circulator 32 and is transmitted to the light intensity detection device 4 through the optical fiber 31, so that the light intensity detection device 4 can obtain the optical signal with higher light intensity, and the error of the light intensity detection device 4 caused by the lower light intensity of the optical signal is reduced.
As shown in fig. 2, the arrows in the figure represent the propagation directions of the optical signals; the focusing is a light transmission principle of a self-adapting lens in the prior art, when a beam of parallel light 7 is incident from one end face, the light is converged on the other end face after passing through the self-focusing lens 33, and the function of the end face focusing cannot be realized by a traditional curved lens.
As shown in fig. 3, the arrows indicate the propagation direction of the optical signals; collimation is a reversible application of the focusing function, and according to the light transmission principle of the self-focusing lens 33, when the converging light (i.e. the light signal emitted from the optical fiber 31 connected to the second port of the optical fiber circulator 32 and the lens rod in this embodiment) is input from one end surface of the self-focusing lens 33, the converging light is converted into the parallel light 7 after passing through the self-focusing lens 33.
As shown in fig. 4, the arrows in the figure indicate the propagation direction of the optical signal; a sleeve 331 is sleeved outside the lens rod; the optical fiber 31 comprises a fiber core 311 and a protective layer 312 covering the fiber core 311, one end part of the sleeve 331 is bonded with the protective layer 312 of the optical fiber 31 through glue, and the central axis of the sleeve 331 is perpendicular to the axis of the outlet 111 of the conductive glue channel 11; thus, the optical signal in the optical fiber 31 can be incident on the lens rod as much as possible, and the detection accuracy can be improved.
Claims (10)
1. The utility model provides a conducting resin system of dripping based on light intensity changes judgement which characterized in that: comprises a conductive adhesive dripping system; the conductive adhesive dripping system comprises a dripper, an optical detection assembly fixed on the dripper, a light source, an optical fiber circulator, a light intensity detection device, a control module and an alarm device;
a conductive adhesive channel is arranged in the dripper, and an outlet of the conductive adhesive channel is arranged at the lower end of the dripper; the dripper is used for dripping the conductive adhesive passing through the outlet of the conductive adhesive channel to the substrate; the light detection assembly is arranged below the outlet; the optical detection assembly comprises a self-focusing lens and a reflector; the self-focusing lens and the reflector are respectively positioned on two sides of the dripper;
the first port of the optical fiber circulator is connected with the light source through an optical fiber, the second port of the optical fiber circulator is connected with one end of the self-focusing lens through an optical fiber, the other end of the self-focusing lens faces to the position right below the outlet of the conductive adhesive channel, and the central axis of the self-focusing lens is perpendicular to the axis of the outlet of the conductive adhesive channel; the reflector is arranged towards the self-focusing lens; the light source emits light rays which sequentially pass through the first port, the second port, the optical fiber and the self-focusing lens of the optical fiber circulator and then are emitted out, and the light rays are reflected by the reflector and sequentially pass through the self-focusing lens and the optical fiber circulator and then reach the light intensity detection device;
the control module is respectively and electrically connected with the light intensity detection device and the alarm device.
2. The conductive adhesive dripping system according to claim 1, wherein: the substrate positioning device also comprises a rack, wherein the substrate is placed on the rack; the dripper is arranged on the frame through a power mechanism; the power mechanism comprises a bracket, an X-axis drive, an X-axis moving frame, a Z-axis drive and a Z-axis moving frame; the support is arranged on the rack, the X-axis drive is arranged between the support and the X-axis moving frame, the Z-axis drive is arranged between the Z-axis moving frames, and the dripper is arranged on the Z-axis moving frame.
3. The conductive paste dripping system according to claim 2, wherein: the support is of a frame structure, is formed by connecting four beams end to end, is internally provided with a moon pool and is fixed on the frame; the X-axis drive is arranged at the front part and the rear part of the bracket and comprises an X-axis servo motor, an X-axis screw rod and an X-axis nut, the X-axis servo motor is arranged on the bracket, the X-axis screw rod is arranged on the bracket through an X-axis bearing block and an X-axis bearing, and the X-axis nut is meshed on the X-axis screw rod;
the X-axis moving frame is fixed on an X-axis nut, guide rods are respectively arranged on the bracket and positioned at two sides of the X-axis screw rod, and a guide block for the guide rods to slide through is arranged on the X-axis moving frame;
the Z-axis drive is arranged on the X-axis moving frame and comprises a Z-axis servo motor, a Z-axis lead screw and a Z-axis nut, the Z-axis servo motor is arranged on the X-axis moving frame, the Z-axis lead screw is arranged on the X-axis moving frame through a Z bearing seat and a Z bearing, and the Z-axis nut is meshed on the Z-axis lead screw; guide rails are respectively arranged on the X-axis moving frame and positioned on two sides of the Z-axis screw rod, a sliding block is arranged at the bottom of the Z-axis moving frame, the sliding block is arranged on the guide rails in a sliding manner, the Z-axis moving frame is fixed on a Z-axis nut, and one end of the Z-axis moving frame protrudes out of one side of the X-axis moving frame and is positioned above the moon pool; a mounting hole is formed in the protruding part of the Z-axis moving frame; the dripper is placed on the mounting hole.
4. The conductive paste dripping system according to claim 1, wherein: the inlet of the conductive adhesive channel is arranged at the upper end of the dripper.
5. The conductive paste dripping system according to claim 1, wherein: the conductive adhesive supplying device is communicated with the inlet of the conductive adhesive channel through the conductive adhesive channel.
6. The conductive adhesive dripping system according to claim 5, wherein: the conductive adhesive supply device comprises an adhesive barrel, a pump arranged in the adhesive barrel and a conveying pipe connected to the outlet of the pump, wherein the conveying pipe is communicated with a conductive adhesive channel; the control module is connected with the pump.
7. The conductive adhesive dripping system according to claim 1, wherein: the self-focusing lens is a lens bar.
8. The conductive paste dripping system according to claim 7, wherein: the outer side of the lens rod is also sleeved with a sleeve; the optical fiber comprises a fiber core and a protective layer covering the fiber core, one end of the sleeve is bonded with the protective layer of the optical fiber, and the central axis of the sleeve is perpendicular to the axis of the outlet of the conductive adhesive channel.
9. The conductive paste dripping system according to claim 1, wherein: the light intensity detection device is a PD detector.
10. The conductive paste dripping system according to claim 1, wherein: the reflector is a right-angle reflector.
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| CN202221437304.0U CN218213680U (en) | 2022-06-10 | 2022-06-10 | Conducting resin system of dripping based on light intensity change is judged |
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| CN202221437304.0U CN218213680U (en) | 2022-06-10 | 2022-06-10 | Conducting resin system of dripping based on light intensity change is judged |
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2022
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