Glue dispensing control system and glue dispensing device

Abstract

The present invention relates to the field of glue dispensing equipment, and specifically discloses a glue dispensing control system and a glue dispensing device. The glue dispensing control system includes a rubber hose with a glue outlet, a cylinder, an air supply source, a first air supply pipeline and a second air supply pipeline. The cylinder and the rubber hose are used in conjunction to discharge the glue liquid in the rubber hose from the glue outlet; the first air supply pipeline connects the rodless cavity of the cylinder with the air supply source; the second air supply pipeline connects the rod cavity of the cylinder with the air supply source; wherein the first air supply pipeline includes a first solenoid valve and an air pressure regulating valve; the first solenoid valve and the air pressure regulating valve are sequentially connected between the cylinder and the air supply source through a first pipeline; the second air supply pipeline includes a second solenoid valve; the second solenoid valve is connected between the cylinder and the air supply source through a second pipeline. The glue dispensing control system and the glue dispensing device can solve the problem of excessive glue discharge during glue dispensing.

Description

[Technical field]

[0001] The invention relates to the field of glue dispensing equipment, and in particular to a glue dispensing control system and a glue dispensing device. [Background technology]

[0002] Glue dispensing equipment is specially used to control fluids and apply fluids to the surface or inside of workpieces. In the production and manufacturing of electronic products, glue dispensing equipment is usually used to dispense glue on workpieces to achieve bonding between two workpieces. As the performance of electronic products continues to improve, the requirements for glue dispensing technology are becoming more and more stringent.

[0003] The existing dispensing equipment is generally a three-axis dispensing equipment, which can realize mobile dispensing along the X-axis, Y-axis and Z-axis directions. However, this three-axis dispensing equipment has problems such as slow dispensing speed, inability to achieve smooth transition at the turning point of the line, unsuitable for more complex curve dispensing paths, and inability to achieve one-stop dispensing on multiple surfaces. In addition, the dispensing control system adopts the method of one-way switching of positive and negative pressure of the cylinder, that is, when replacing the hose, the cylinder returns and adopts the method of negative pressure suction. In this way, the following situations are prone to occur when dispensing:

[0004] 1. Since positive and negative pressures share the same gas circuit, the exhaust end of the solenoid valve needs to be blocked. In this way, during normal operation, when the program stops executing positive pressure, the actual pressure will not immediately become 0, but the cylinder will continue to move forward until it is balanced with the resistance in the hose. In this process, more glue will be produced than the predetermined line, that is, the glue will not be cut off in time.

[0005] 2. Whether in standby or operation, the negative pressure must be adjusted to a suitable value to prevent the cylinder from retreating and causing glue back suction when the positive pressure is stopped.

[0006] Therefore, it is necessary to design a dispensing control system and a dispensing device to solve the above problems. [Summary of the invention]

[0007] The object of the present invention is to provide a glue dispensing control system and a glue dispensing device, which can solve the problem of excessive glue dispensing during glue dispensing.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A dispensing control system, comprising:

[0010] A rubber hose having a rubber outlet;

[0011] A cylinder, which is used in conjunction with the rubber hose and can discharge the glue liquid in the rubber hose from the glue outlet;

[0012] Gas supply source;

[0013] A first air supply pipeline connecting the rodless chamber of the cylinder with the air supply source; and

[0014] The second air supply pipeline connects the rod chamber of the cylinder with the air supply source; wherein,

[0015] The first air supply pipeline includes a first solenoid valve and an air pressure regulating valve; the first solenoid valve and the air pressure regulating valve are sequentially connected between the cylinder and the air supply source through a first pipeline;

[0016] The second air supply pipeline includes a second solenoid valve; the second solenoid valve is connected between the cylinder and the air supply source through a second pipeline.

[0017] Furthermore, the first solenoid valve is connected to a PLC controller.

[0018] Furthermore, the second solenoid valve is connected to a knob switch.

[0019] Furthermore, the first solenoid valve and the second solenoid valve are both provided with a muffler.

[0020] A dispensing device comprises the above-mentioned dispensing control system, a connecting seat for carrying the rubber hose and the cylinder, a workbench and a positioning assembly; the connecting seat is connected to the mechanical arm of a six-axis robot; the positioning assembly is connected to the workbench and is used to position the workpiece to be dispensed.

[0021] Furthermore, the positioning assembly includes a positioning fixture and two L-shaped positioning blocks; the two positioning blocks are connected to the top surface of the workbench; a workpiece positioning groove is provided on the top surface of the positioning fixture; and the positioning fixture is locked and connected to the workbench.

[0022] Furthermore, at least two positioning components are provided.

[0023] The beneficial effects of the present invention are:

[0024] 1. The glue dispensing control system of the present invention connects the rodless chamber of the cylinder with the air supply source, and the rod chamber of the cylinder with the air supply source through the first solenoid valve and the second solenoid valve respectively. When the positive pressure stops during program execution, the actual pressure of the cylinder can immediately become 0, thereby solving the problem of excess glue.

[0025] 2. The glue dispensing device of the present invention positions the workpiece to be glued by a positioning component, and driven by a six-axis robot, realizes mobile glue dispensing in the directions of X-axis, Y-axis, Z-axis, U-axis, V-axis and W-axis. The glue dispensing device has high precision and efficiency, and can perform one-stop operations on multiple complex curved surfaces (even multiple mutually perpendicular surfaces).

Brief Description of the Drawings

[0026] Figure 1 It is a circuit / gas circuit schematic diagram of the dispensing control system provided by the present invention;

[0027] Figure 2 It is a structural schematic diagram of a workbench and a positioning component in the glue dispensing device provided by the present invention. [Specific implementation method]

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] like Figure 1 As shown, a dispensing control system includes a rubber hose 10 with a glue outlet, a cylinder 20, an air supply source 30, a first air supply pipeline and a second air supply pipeline. The cylinder 20 is used in conjunction with the rubber hose 10 to discharge the glue liquid in the rubber hose 10 from the glue outlet; the first air supply pipeline connects the rodless cavity 21 of the cylinder 20 with the air supply source 30, and includes a first solenoid valve 42 and an air pressure regulating valve 43, which are sequentially connected between the cylinder 20 and the air supply source 30 through a first pipeline 41; the second air supply pipeline connects the rod cavity of the cylinder 20 with the air supply source 30, and includes a second solenoid valve 52; the second solenoid valve 52 is connected between the cylinder 20 and the air supply source 30 through a second pipeline 51.

[0030] In the present invention, the first solenoid valve 42 has an air outlet A and an air inlet B, wherein the air inlet B of the first solenoid valve 42 is connected to the first pipeline 41. The first solenoid valve 42 is connected to a PLC controller 70, and the PLC controller 70 is connected to the control system of the six-axis robot 80. During operation, the first solenoid valve 42 is powered on or off by the PLC controller 70 to realize the on-off of the first air supply pipeline. The second solenoid valve 52 also has an air outlet A and an air inlet B, wherein the air inlet B of the second solenoid valve 52 is connected to the second pipeline 51. The second solenoid valve 52 is connected to a knob switch 60, and the on-off of the second air supply pipeline is realized by the knob switch 60.

[0031] Furthermore, silencers are provided on the first solenoid valve 42 and the second solenoid valve 52 to prevent foreign particles in the environment from entering the first solenoid valve 42 and the second solenoid valve 52 and causing blockage; at the same time, they play a role in noise reduction.

[0032] In addition, since the air pressure regulating valve 43 is connected between the first solenoid valve 42 and the air supply source 30, in the standby state, that is, when the first solenoid valve 42 is not powered to connect its B air inlet, the actual air pressure of the cylinder 20 can be displayed to facilitate the operator to adjust and confirm.

[0033] The working principle of the glue dispensing control system of the present invention is: when dispensing glue, the PLC controller 70 controls the first solenoid valve 42 to be energized, the B air inlet of the first solenoid valve 42 is connected to the first pipe 41, the first air supply pipeline is in a conducting state, and the gas provided by the air supply source 30 enters the rodless chamber 21 of the cylinder 20 through the first air supply pipeline; at the same time, the A air outlet of the second solenoid valve 52 is connected to the rod chamber 22 of the cylinder 20 through the second pipe 51; thereby, the piston of the cylinder 20 moves, and the glue liquid in the rubber hose 10 is squeezed out from the glue outlet. When glue dispensing is completed, the PLC controller 70 controls the first solenoid valve 42 to cut off the power, the first air supply pipeline is disconnected, and the A outlet port of the first solenoid valve 42 is connected to the rodless chamber 21 of the cylinder 20 through the first pipeline 41; at the same time, the knob switch 60 switches the second solenoid valve 52 to the B air inlet port of the second solenoid valve 52 to be connected to the second pipeline 51, and the second air supply pipeline is in a conducting state. The gas provided by the air supply source 30 enters the rod chamber 22 of the cylinder 20 through the second air supply pipeline, so that the actual pressure of the cylinder 20 can immediately become 0 when glue dispensing is completed, thereby avoiding the occurrence of excessive glue.

[0034] The present invention provides a dispensing device, comprising the above-mentioned dispensing control system, a connecting seat for carrying the rubber tube 10 and the cylinder 20, a workbench 100 and a positioning assembly 130; wherein the connecting seat is connected to the mechanical arm of the six-axis robot 80; the positioning assembly 130 is connected to the workbench 100 and is used to position the workpiece to be dispensed with glue.

[0035] As a preferred embodiment of the present invention, Figure 2 As shown, the positioning assembly 130 includes a positioning fixture 120 and two L-shaped positioning blocks 110. The two positioning blocks 110 are connected to the top surface of the workbench 100 to position the positioning fixture 120; the positioning fixture 120 is fixed to the workbench 100 by screws, and a workpiece positioning groove 121 is opened on the top surface.

[0036] To further improve the working efficiency, at least two positioning assemblies 130 can be set on the workbench 100. When in use, only the program and path need to be set to achieve seamless switching between different workpieces. Among these positioning assemblies 130, positioning fixtures 120 for the same kind of workpieces can be used, or positioning fixtures 120 for multiple workpieces can be used.

[0037] The glue dispensing device of the present invention controls the glue output of the rubber hose 10 through a glue dispensing control system to avoid excessive glue output; by installing the rubber hose 10 and the air cylinder 20 on the mechanical arm of the six-axis robot 80, when dispensing glue on different workpieces, it is sufficient to replace the corresponding fixture without replacing the head of the six-axis robot 80, and the replacement is relatively convenient. When dispensing glue, the workpiece to be dispensed is positioned by the positioning component 130, and under the drive of the six-axis robot 80, mobile dispensing in the directions of the X-axis, Y-axis, Z-axis, U-axis, V-axis and W-axis is realized, and the dispensing glue has high precision and efficiency, and can be performed in one stop for multiple complex curved surfaces (even multiple mutually perpendicular surfaces).

[0038] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations here, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A dispensing control system, characterized in that: include: A rubber hose having a rubber outlet; A cylinder, which is used in conjunction with the rubber hose and can discharge the glue liquid in the rubber hose from the glue outlet; An air supply source, comprising a first air supply source and a second air supply source; A first air supply pipeline connecting the rodless chamber of the cylinder and the first air supply source; and The second air supply pipeline connects the rod chamber of the cylinder with the second air supply source; wherein, The first air supply pipeline includes a first solenoid valve and an air pressure regulating valve; the first solenoid valve has an air outlet A and an air inlet B, and the air inlet B of the first solenoid valve is connected to the first pipeline; the first solenoid valve and the air pressure regulating valve are sequentially connected between the cylinder and the first air supply source through the first pipeline; in the standby state, that is, when the first solenoid valve is not powered and connected to its air inlet B, the air pressure regulating valve can display the actual air pressure of the cylinder; The second air supply pipeline includes a second solenoid valve; the second solenoid valve is connected between the cylinder and the second air supply source through a second pipeline, wherein the second solenoid valve is connected to a knob switch, and the second solenoid valve has the function of switching the second air supply pipeline on and off through the knob switch; the first solenoid valve is connected to a PLC controller; the first solenoid valve and the second solenoid valve are both provided with a muffler; The rodless chamber of the cylinder is connected to the first air supply source, and the rod chamber of the cylinder is connected to the second air supply source through the first solenoid valve and the second solenoid valve respectively; when dispensing is completed, the PLC controller controls the first solenoid valve to cut off the power, the first air supply pipeline is disconnected, and the A outlet of the first solenoid valve is connected to the rodless chamber of the cylinder through the first pipeline; at the same time, the knob switch switches the second solenoid valve to connect the B air inlet of the second solenoid valve to the second pipeline, the second air supply pipeline is in a conducting state, and the gas provided by the air supply source enters the rod chamber of the cylinder through the second air supply pipeline, so that the actual pressure of the cylinder can immediately become 0 when dispensing is completed.

2. A dispensing device, characterized in that: It comprises the dispensing control system described in claim 1, a connecting seat for carrying the rubber hose and the cylinder, a workbench and a positioning assembly; the connecting seat is connected to the mechanical arm of a six-axis robot; the positioning assembly is connected to the workbench and is used to position the workpiece to be dispensed; the positioning assembly comprises a positioning fixture and two L-shaped positioning blocks; the two positioning blocks are connected to the top surface of the workbench; a workpiece positioning groove is provided on the top surface of the positioning fixture; the positioning fixture is locked and connected to the workbench; at least two positioning assemblies are provided.

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