Special alcohol loop for cleaning machine

Abstract

The invention relates to the technical field of liquid crystal bonding, in particular to an alcohol loop special for a cleaning machine, and mainly solves the technical problems that an existing alcohol loop of the cleaning machine is poor in control precision, and whether alcohol exists at a cleaning head or not cannot be achieved. The structure comprises a supply path, a first control path and a second control path, the supply path comprises an alcohol pot, a dispensing machine, a needle tube, an on-off valve, a detection function block and a cleaning head which are communicated in sequence, the first control path comprises a first pressure regulating valve, and the second control path comprises a second pressure regulating valve and a third pressure regulating valve. According to the structure, the dispensing machine is adopted for supplying alcohol, a tedious alcohol tank system is abandoned, the equipment is cleaner, and the cost is lower; the needle tube is matched with the first control path and the second control path to supply alcohol to the cleaning head, so that the control precision is higher; the detection function block is additionally arranged and is arranged on the adjacent upstream of the cleaning head, so that whether alcohol exists or not can be accurately detected, whether alcohol exists at the cleaning head or not is effectively reflected, and then the reliability of cleaning operation is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal bonding technology, and in particular to an alcohol circuit specifically designed for cleaning machines. Background Technology

[0002] In the LCD bonding industry, using alcohol to wet-clean LCD substrates followed by plasma cleaning can improve the bonding strength between the LCD substrate and the flexible circuit board, reducing issues such as substrate lifting and poor adhesion. The alcohol used for wet cleaning is supplied through an alcohol circuit.

[0003] In the existing technology, the alcohol circuit has the following defects: First, the alcohol tank system is used to supply alcohol to the cleaning head, which results in poor alcohol control accuracy and easy waste of alcohol; Second, due to the limited space at the cleaning head, it is difficult to design a detection sensor, so there is no detection sensor at the cleaning head, which makes it impossible to know whether there is alcohol at the cleaning head, affecting the reliability of the cleaning operation.

[0004] Therefore, there is an urgent need for an alcohol circuit that has high alcohol control precision and can detect the presence or absence of alcohol at the cleaning head. Summary of the Invention

[0005] To overcome the technical defects of existing alcohol circuits in cleaning machines, such as poor control precision and inability to determine whether there is alcohol at the cleaning head, this invention provides a dedicated alcohol circuit for cleaning machines.

[0006] The alcohol circuit for cleaning machines provided by this invention includes:

[0007] The supply path includes an alcohol reservoir, a dispensing machine, a syringe, an on / off valve, a detection function block, and a cleaning head, connected in sequence. The top end of the syringe is connected to the dispensing machine, and the bottom end of the syringe is connected to the on / off valve. The detection function block includes a U-shaped tube, a detection sensor, an air inlet tube, a liquid inlet tube, and a liquid outlet tube. The belly of the U-shaped tube is located at its bottom end. The detection sensor is located on the belly of the U-shaped tube and is used to detect whether there is alcohol in the belly of the U-shaped tube. The two wings of the U-shaped tube are arranged vertically and are respectively connected to the vertically arranged air inlet tube and the horizontally arranged liquid outlet tube. The liquid inlet tube is connected to the side of the middle section of the air inlet tube. The free end of the liquid inlet tube is connected to the on / off valve, and the free end of the liquid outlet tube is connected to the cleaning head.

[0008] The first control circuit includes a first pressure regulating valve, the inlet of which is connected to a positive pressure source, and the outlet of which is connected to the top of the needle tube and is used to drive the bottom of the needle tube to drain liquid by injecting positive pressure gas into the needle tube.

[0009] Second control circuit, it includes second pressure regulating valve and third pressure regulating valve, the air inlet end of second pressure regulating valve and the air inlet end of third pressure regulating valve are used to communicate positive pressure source, the air outlet end of second pressure regulating valve and the air outlet end of third pressure regulating valve are communicated at the top end of the air inlet pipe, second pressure regulating valve is used to drive alcohol to reach the abdomen of the U-shaped pipe by inputting small positive pressure gas to the air inlet pipe, third pressure regulating valve is used to drive alcohol to blow from the liquid outlet pipe by inputting large positive pressure gas to the air inlet pipe.

[0010] Further, the alcohol kettle is provided with a first liquid level sensor.

[0011] Further, the needle tube is provided with a second liquid level sensor.

[0012] Further, the top end of the needle tube is also provided with a manual liquid injection port.

[0013] Further, the detection function block further includes two clamps and a converging block, the two clamps are oppositely arranged, the U-shaped pipe is clamped between the bottoms of the two clamps, one end of the converging block is clamped between the tops of the two clamps and is used to insert the air inlet pipe and the liquid inlet pipe, the other end of the converging block is provided with a bending part and the bending part is used to insert the liquid outlet pipe.

[0014] Further, the detection sensor is a pair of emitter and receiver, the emitter and the receiver are respectively arranged on the two clamps, and the emitter and the receiver are fixed on the bottoms of the corresponding clamps through a U-shaped connecting piece.

[0015] Further, the second control circuit further includes a two-position three-way electromagnetic valve, two input ports of the two-position three-way electromagnetic valve are respectively communicated with the air outlet end of the second pressure regulating valve and the air outlet end of the third pressure regulating valve, and the output port of the two-position three-way electromagnetic valve is communicated with the top end of the air inlet pipe.

[0016] Further, the supply circuit, the first control circuit and the second control circuit form an alcohol pipe set, and the alcohol pipe set is provided with at least two sets.

[0017] Compared with the prior art, the technical scheme provided by the present application has the following advantages:

[0018] The alcohol circuit special for the cleaning machine provided by the present application adopts the glue dispenser to supply alcohol, discards the complicated alcohol tank system, and the equipment is more tidy and the cost is lower; the needle tube cooperates with the first control circuit and the second control circuit to supply alcohol for the cleaning head, and the control precision is higher; the detection function block is additionally arranged at the adjacent upstream of the cleaning head, can accurately detect whether the alcohol exists, thereby effectively reflecting whether the alcohol exists at the cleaning head, and further ensuring the reliability of the cleaning operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced here. Obviously, for those skilled in the field, other drawings can also be obtained based on these drawings without any creative effort.

[0021] Figure 1 A structure schematic diagram of an alcohol circuit in the embodiment of the present application is shown in the figure.

[0022] Figure 2 A structure schematic diagram of a detection function block in the embodiment of the present application is shown in the figure. Figure 1 A partial enlarged view of A in the figure.

[0023] Figure 3 A structure schematic diagram of a U-shaped tube in the embodiment of the present application is shown in the figure.

[0024] Figure 4 A structure schematic diagram of a U-shaped tube in the embodiment of the present application is shown in the figure.

[0025] In the figure:

[0026] 100, supply path; 110, alcohol pot; 111, first liquid level sensor; 120, dispensing machine; 130, needle tube; 131, second liquid level sensor; 132, manual liquid injection port; 140, on-off valve; 150, detection function block; 151, U-shaped tube; 152, detection sensor; 153, air inlet tube; 154, liquid inlet tube; 155, liquid outlet tube; 156, clamping plate; 157, converging block; 158, U-shaped connecting piece; 160, cleaning head;

[0027] 200, first control path; 210, first pressure regulating valve;

[0028] 300, second control path; 310, second pressure regulating valve; 320, third pressure regulating valve; 330, two-position three-way electromagnetic valve. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced here. Obviously, for those skilled in the field, other drawings can also be obtained based on these drawings without any creative effort.

[0030] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced without the specific details. In other instances, well-known methods, procedures and components have not been described in detail so as not to obscure the present application.

[0031] The application will be described in detail below with reference to the accompanying drawings. Figures 1 to 4 The application will be described in detail below with reference to the accompanying drawings.

[0032] The embodiment provides a special alcohol circuit for a cleaning machine, which comprises a supply path 100, a first control path 200 and a second control path 300.

[0033] To meet the actual cleaning requirement, the supply path 100, the first control path 200 and the second control path 300 form an alcohol pipe group, and the alcohol pipe group is provided with at least two sets. For example Figure 1 As shown in the figure, the embodiment is provided with two sets of alcohol pipe groups.

[0034] The supply path 100 comprises an alcohol pot 110, a dispensing machine 120, a needle tube 130, an on-off valve 140, a detection function block 150 and a cleaning head 160 which are sequentially communicated, the top end of the needle tube 130 is communicated with the dispensing machine 120, the bottom end of the needle tube 130 is communicated with the on-off valve 140, the detection function block 150 comprises a U-shaped tube 151, a detection sensor 152, an air inlet pipe 153, a liquid inlet pipe 154 and a liquid outlet pipe 155, the abdomen of the U-shaped tube 151 is located at the bottom end, the detection sensor 152 is arranged at the abdomen of the U-shaped tube 151 and is used to detect whether there is alcohol in the abdomen of the U-shaped tube 151, the two wing parts of the U-shaped tube 151 are vertically arranged and are respectively communicated with the vertically arranged air inlet pipe 153 and the horizontally arranged liquid outlet pipe 155, the liquid inlet pipe 154 is communicated with the side of the middle segment of the air inlet pipe 153, the free end of the liquid inlet pipe 154 is communicated with the on-off valve 140, and the free end of the liquid outlet pipe 155 is communicated with the cleaning head 160.

[0035] To monitor the real-time content of alcohol in the alcohol pot 110, the embodiment further adds a first liquid level sensor 111 on the alcohol pot 110. When the first liquid level sensor 111 detects a low liquid level signal, a buzzer can be configured to trigger the buzzer to alarm, so as to remind the operator to add alcohol to the alcohol pot 110.

[0036] It should be noted that the structure adopts the dispensing machine 120 as the core component for alcohol supply, on the one hand, there is no need to design the existing alcohol tank and its pressure system, the equipment structure is more compact in space, the equipment cost is reduced, and the equipment is more tidy; on the other hand, compared with the alcohol tank, a small amount of alcohol can be supplied, the alcohol amount can be better controlled, and alcohol waste can be avoided. The dispensing machine 120 is a mature structure in the field, and the structure itself is not changed, only a new use of the dispensing machine 120 is developed, and thus the structure is not described herein.

[0037] To monitor the real-time content of alcohol in the needle tube 130, the second liquid level sensor 131 is additionally arranged on the needle tube 130 in the embodiment. In use, the controller can be configured, and the second liquid level sensor 131 and the glue dispenser 120 are both connected with the controller, so as to control the glue dispenser 120 to start adding alcohol to the needle tube 130 when the controller receives the low liquid level signal detected by the second liquid level sensor 131.

[0038] Specifically, the structures of the first liquid level sensor 111 and the second liquid level sensor 131 are not limited, for example Figure 1 and Figure 2 are shown, the first liquid level sensor 111 and the second liquid level sensor 131 are both opposite radiation sensors installed at the corresponding low liquid level. The opposite radiation sensor is composed of a transmitter and a receiver arranged oppositely: when the liquid level is high, the transmitter and the receiver are blocked by alcohol, no signal occurs; when the liquid level drops to the low liquid level, the transmitter and the receiver are not blocked by alcohol, a signal occurs.

[0039] To improve the flexibility of liquid supplementing of the needle tube 130, the manual liquid injection port 132 is additionally arranged at the top end of the needle tube 130 in the embodiment. The needle tube 130 can not only realize automatic liquid supplementing through the glue dispenser 120 cooperating with the second liquid level sensor 131, but also realize manual liquid supplementing through the manual liquid injection port 132.

[0040] It should be noted that the detection function block 150 is a newly designed structure of the whole structure, which mainly overcomes the technical defects of the design difficulty of the detection sensor 152 in the prior art due to the limited space at the cleaning head 160. The detection function block 150 is arranged adjacent to the upstream of the cleaning head 160, and the alcohol required for spraying by the cleaning head 160 is provided by blowing out the trace alcohol stored in the abdomen of the U-shaped tube 151 of the detection function block 150 by the large positive pressure gas. In this way, the alcohol presence / absence state at the cleaning head 160 is completely consistent with the alcohol presence / absence state in the abdomen of the U-shaped tube 151, so that the alcohol presence / absence at the cleaning head 160 can be accurately judged as long as the alcohol presence / absence in the abdomen of the U-shaped tube 151 is detected.

[0041] It is easy to understand that the core components of the detection function block 150, such as the U-shaped tube 151, the detection sensor 152, the air inlet pipe 153, the liquid inlet pipe 154 and the liquid outlet pipe 155, need to be supported by other structures. In the embodiment, as shown in Figure 3 and Figure 4 , the detection function block 150 is provided with the clamping plates 156 and the converging block 157. The clamping plates 156 are arranged oppositely, the U-shaped tube 151 is clamped between the bottoms of the two clamping plates 156, one end of the converging block 157 is clamped between the tops of the two clamping plates 156 and is used to insert the air inlet pipe 153 and the liquid inlet pipe 154, and the other end of the converging block 157 is provided with a bending part and the bending part is used to insert the liquid outlet pipe 155.

[0042] Specifically, the structure of the detection sensor 152 is not limited, for example Figure 3 and Figure 4 As shown in the figure, the detection sensor 152 of the embodiment is a pair of sensors composed of a transmitter and a receiver, the transmitter and the receiver are respectively arranged on the two clamping plates 156, and the transmitter and the receiver are fixed on the bottom of the corresponding clamping plate 156 through the U-shaped connecting piece 158.

[0043] The first control path 200 includes a first pressure regulating valve 210, the gas inlet end of the first pressure regulating valve 210 is connected to the positive pressure source, and the gas outlet end of the first pressure regulating valve 210 is connected to the top end of the needle tube 130 and is used to drive the bottom end of the needle tube 130 to discharge liquid by injecting positive pressure gas into the needle tube 130.

[0044] It is easy to understand that by adjusting the gas pressure injected into the needle tube 130 through the first pressure regulating valve 210, the liquid discharge amount of the needle tube 130 can be accurately controlled.

[0045] The second control path 300 includes a second pressure regulating valve 310 and a third pressure regulating valve 320, the gas inlet end of the second pressure regulating valve 310 and the gas inlet end of the third pressure regulating valve 320 are connected to the positive pressure source, the gas outlet end of the second pressure regulating valve 310 and the gas outlet end of the third pressure regulating valve 320 are connected to the top end of the gas inlet pipe 153, the second pressure regulating valve 310 is used to drive the alcohol to reach the abdomen of the U-shaped tube 151 by inputting small positive pressure gas into the gas inlet pipe 153, and the third pressure regulating valve 320 is used to drive the alcohol to blow out from the liquid outlet pipe 155 by inputting large positive pressure gas into the gas inlet pipe 153.

[0046] In order to avoid the mutual influence of the second pressure regulating valve 310 and the third pressure regulating valve 320, the embodiment further adds a two-position three-way solenoid valve 330, the two input ports of the two-position three-way solenoid valve 330 are respectively connected to the gas outlet end of the second pressure regulating valve 310 and the gas outlet end of the third pressure regulating valve 320, and the output port of the two-position three-way solenoid valve 330 is connected to the top end of the gas inlet pipe 153. The switching of the second pressure regulating valve 310 and the third pressure regulating valve 320 is realized through the two-position three-way valve, which is convenient to operate and reliable in performance.

[0047] It should be noted that since the amount of alcohol sprayed by the cleaning head 160 in a single time is small, the alcohol entering the U-shaped tube 151 is most likely to hover in the wing of the U-shaped tube 151, so the second pressure regulating valve 310 is arranged in the embodiment, and small positive pressure gas is output through the second pressure regulating valve 310 to make the alcohol smoothly reach the abdomen of the U-shaped tube 151. The pressure of the small positive pressure gas is related to the width of the U-shaped tube 151 and the setting position of the liquid inlet pipe 154, etc., which can be determined by the person skilled in the art through a limited number of experiments.

[0048] The working principle of the alcohol circuit special for the cleaning machine of the embodiment is as follows:

[0049] The alcohol is outputted from the alcohol pot 110, injected into the needle tube 130 after passing through the dispenser 120; the first pressure regulating valve 210 injects positive pressure gas into the needle tube 130, drives the alcohol in the needle tube 130 to be outputted quantitatively from the bottom end, and to reach the U-shaped tube 151 after passing through the on-off valve 140; the second pressure regulating valve 310 injects small positive pressure gas into the air inlet tube 153, drives the alcohol to reach the abdomen of the U-shaped tube 151; after the detection sensor 152 detects the alcohol, the two-position three-way electromagnetic valve 330 is switched to the third pressure regulating valve 320 to be conducted, the third pressure regulating valve 320 injects large positive pressure gas into the air inlet tube 153, drives the alcohol to pass through the liquid outlet tube 155 and be sprayed from the cleaning head 160.

[0050] The above merely describes the specific embodiments of the present application, so that those skilled in the art can understand or implement the present application. Although the foregoing embodiments are described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should be covered in the protection scope of the claims.

Claims

1. An alcohol circuit specifically for a cleaning machine, characterized in that, include: A supply path (100) includes an alcohol reservoir (110), a dispensing machine (120), a syringe (130), an on / off valve (140), a detection function block (150), and a cleaning head (160) connected in sequence. The top end of the syringe (130) is connected to the dispensing machine (120), and the bottom end of the syringe (130) is connected to the on / off valve (140). The detection function block (150) includes a U-shaped tube (151), a detection sensor (152), an air inlet pipe (153), a liquid inlet pipe (154), and a liquid outlet pipe (155). The U-shaped tube (151) has... The abdomen is located at its bottom end. The detection sensor (152) is located on the abdomen of the U-shaped tube (151) and is used to detect whether there is alcohol in the abdomen of the U-shaped tube (151). The two wings of the U-shaped tube (151) are arranged vertically and are respectively connected to the vertically arranged air inlet pipe (153) and the horizontally arranged liquid outlet pipe (155). The liquid inlet pipe (154) is connected to the middle section of the air inlet pipe (153). The free end of the liquid inlet pipe (154) is connected to the on / off valve (140). The free end of the liquid outlet pipe (155) is connected to the cleaning head (160). The first control circuit (200) includes a first pressure regulating valve (210), the inlet of which is connected to a positive pressure source, and the outlet of which is connected to the top of the needle tube (130) and is used to drive the bottom of the needle tube (130) to drain liquid by injecting positive pressure gas into the needle tube (130). The second control circuit (300) includes a second pressure regulating valve (310) and a third pressure regulating valve (320). The inlet end of the second pressure regulating valve (310) and the inlet end of the third pressure regulating valve (320) are both connected to a positive pressure source. The outlet end of the second pressure regulating valve (310) and the outlet end of the third pressure regulating valve (320) are both connected to the top of the inlet pipe (153). The second pressure regulating valve (310) is used to drive the alcohol to the belly of the U-shaped tube (151) by inputting a small positive pressure gas into the inlet pipe (153). The third pressure regulating valve (320) is used to drive the alcohol out of the outlet pipe (155) by inputting a large positive pressure gas into the inlet pipe (153).

2. The alcohol circuit for cleaning machines according to claim 1, characterized in that, The alcohol container (110) is equipped with a first liquid level sensor (111).

3. The alcohol circuit for cleaning machines according to claim 1, characterized in that, The syringe (130) is equipped with a second liquid level sensor (131).

4. The alcohol circuit for cleaning machines according to claim 1, characterized in that, The needle (130) is also provided with a manual injection port (132) at the top.

5. The alcohol circuit for a cleaning machine according to claim 1, characterized in that, The detection function block (150) also includes a clamping plate (156) and a manifold (157). There are two clamping plates (156) arranged opposite to each other. The U-shaped tube (151) is clamped between the bottoms of the two clamping plates (156). One end of the manifold (157) is clamped between the tops of the two clamping plates (156) and is used to insert the air inlet pipe (153) and the liquid inlet pipe (154). The other end of the manifold (157) is provided with a bend and the bend is used to insert the liquid outlet pipe (155).

6. The alcohol circuit for a cleaning machine according to claim 5, characterized in that, The detection sensor (152) is a through-beam sensor consisting of a transmitter and a receiver. The transmitter and receiver are respectively set on two clamps (156), and the transmitter and receiver are fixed to the bottom of the corresponding clamps (156) by a U-shaped connector (158).

7. The alcohol circuit for a cleaning machine according to claim 1, characterized in that, The second control circuit (300) also includes a two-position three-way solenoid valve (330). The two input ports of the two-position three-way solenoid valve (330) are respectively connected to the outlet of the second pressure regulating valve (310) and the outlet of the third pressure regulating valve (320). The output port of the two-position three-way solenoid valve (330) is connected to the top of the air inlet pipe (153).

8. The alcohol circuit for a cleaning machine according to any one of claims 1 to 7, characterized in that, The supply path (100), the first control path (200), and the second control path (300) constitute an alcohol tube assembly, and at least two alcohol tube assemblies are provided.

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