KR20060121393A - Syringe pump type dispensor using motor - Google Patents

Abstract

A syringe pump type dispenser is provided to improve linearity and workability of a product by embodying a basic construction of a dispenser in a syringe pump type. A suction port(2) is formed for a suction of a material(1). A discharge port(3) is formed to discharge the material inhaled through the suction port to a chip or needle chip(5). An input/output change-over valve(4) is disposed between the suction port and the discharge port, and is switched to the suction port or the discharge port during a suction or discharge of the material. A syringe(6) is connected to the input/output change-over valve so that the material inhaled through the suction port and the input/output change-over valve is discharged to the chip or needle chip. A plunger determines suction and discharge amount of the material in the syringe. A ball screw is installed at a lower end of the plunger and causes the plunger to be operated upward and downward. A motor is connected to a lower end of the ball screw and functions as a driver to operate the syringe, the plunger, and ball screw. A controller(10) controls a total operation.

Description

Syringe pump type dispenser using a motor {SYRINGE PUMP TYPE DISPENSOR USING MOTOR}

1 is an overall schematic view of a syringe pump type dispenser using the motor of the present invention.

Figure 2a to 2c is a suction / discharge operation of the syringe pump type dispenser using the motor of the present invention.

3 is a view showing an average discharge amount of a syringe pump type dispenser using the motor of the present invention.

Figure 4 is a control block diagram of a syringe pump type dispense using a motor of the present invention.

* Explanation of symbols for main parts of drawings *

2: inlet port 3: outlet port

4: input / output switching valve 6: syringe

7: flanger 8: ball screw

9: motor 10: controller

11: CPU 12: key input unit

13: display 14: memory

15 output unit 16 power supply unit

The present invention relates to a dispenser, which is a discharge device, and realizes the basic structure of the dispenser by a syringe pump method using a motor (step motor, servo motor, etc.) to improve the linearity and workability of the product, as well as to distribute the discharge amount. The present invention relates to a syringe pump type dispenser using a motor, which enables easy control of fine discharge due to its low number and makes it possible to diversify the application according to the material selection.

In general, a dispenser, which is a discharge device, is currently applied throughout the industry, such as raw material injection in the semiconductor and LCD processes, reagent mixing in the pharmaceutical industry, input and other raw material input such as food industry input.

The most common dispenser is an air (air type) discharge device, which discharges by using air and generates a negative pressure, it is used to add a spill prevention function.

However, since the air discharge device is configured as a negative pressure generator for generating a vacuum by regulating the pressure with a regulator and outputting the product, the discharge amount of the product is large and precise control is impossible, and due to the compression characteristics, As the output characteristics change or the discharge time hardens, there is a disadvantage in that the linearity of the discharge amount is inferior.

Therefore, the present invention is to solve the above problems, an object of the present invention by implementing the basic structure of the dispenser by the syringe pump method using a motor control method, the linearity and workability of the product is improved, as well as the discharge amount It is easy to provide fine discharge control due to the small dispersion, and to provide a dispenser using a motor that can diversify the application according to the material selection.

Another object of the present invention is to stop the liquid spill and return through the reverse rotation step of the motor after the discharge of the material through the shutdown function (Suckback), as well as to control the motor to control all these operations by the controller It is to provide a syringe pump type dispenser used.

Syringe pump type dispenser using the motor of the present invention for achieving the above object, the suction port formed for material suction; A discharge port formed for discharging the material sucked through the suction port to the chip / needle chip; An input / output switching valve configured between the suction port and the discharge port so as to be connected to the suction port and the discharge port at the time of suction or discharge of the material; A syringe connected to the input / output switching valve to serve as a material storage tank to discharge the material sucked through the suction port and the input / output switching valve to the chip or the needle chip through the discharge port; A screw-shaped plunger coupled to the lower portion of the syringe and coupled with an O-ring for sealing the material in the syringe moving up and down to determine the suction amount and the discharge amount of the material in the syringe; A ball screw formed at a lower portion of the flanger to enable vertical movement of the flanger; A motor configured to be connected to a lower end of the ball screw to serve as a driving unit to enable the operation of the syringe, the flanger and the ball screw; And a controller for controlling all the operations.

The controller of the present invention includes a CPU in which a control algorithm is embedded; A key input unit configured to enable a user to set an operation of the dispenser or input a required operation; A display for displaying the input state of the key input unit and the operation state of the dispenser so as to be recognized by a user under control of the CPU; A memory for storing an automatic setting in a work process or a setting mode directly input by a user according to a work process, or storing home position information of a motor; An output unit configured to recognize a user as a buzzer or the like when detecting a dispenser; And a power supply unit for applying operating power to the controller.

The flanger of the present invention is connected to a ball or slide screw together with a sealing role of the syringe, and when operated downward, a shutback operation by suction of material and a reverse rotation step of the motor is performed. It characterized in that the discharge operation to the chip side during operation.

The input / output switching valve of the present invention is connected to the suction port when the syringe moves downward by the drive of the motor to suck the material into the syringe, and when the syringe moves upward, the discharge port to discharge the material stored in the syringe to the discharge port It characterized in that the connection is switched to.

The CPU of the present invention stops the discharge operation when the material stored in the syringe is discharged by a predetermined amount through the discharge port, when the material decreases below the set storage amount, and through the output unit and the display, the remaining alarm sound and the remaining alarm screen It is characterized in that the output to the user to recognize.

The shutback operation of the present invention is characterized in that the liquid can be prevented by adjusting the shutback amount, the operation time and the number of times according to the difference in viscosity of the material.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall schematic view of a syringe pump dispenser using the motor of the present invention, Figures 2a to 2c is a suction / discharge operation of the syringe pump dispenser using the motor of the present invention, Figure 3 is a motor of the present invention The average discharge amount of the syringe pump type dispenser used, FIG. 4 is a control block diagram of the syringe pump type dispenser using the motor of this invention.

As illustrated in FIGS. 1 and 4, the syringe pump type dispenser using the motor of the present invention includes a suction port 2 formed for suctioning the material 1 into the dispenser, and a material sucked through the suction port 2. An ejection opening 3 formed for ejection of the chip 1 from the chip 1 of the NEEDLE chip 5, and a suction opening so as to be connected to the suction opening 2 and the ejection opening 3 when the material 1 is sucked or discharged. An input / output switching valve (4) configured between the (2) and the discharge port (3), and the material (1) sucked through the suction port (2) and the input / output switching valve (4) through the discharge port (3) chip or needle chip A syringe (6) connected to the input / output switching valve (4) to serve as a discharge tank (5) to serve as a storage tank, and a suction amount and a discharge amount of the material (1) in the syringe (6). A screw-shaped plug coupled to the lower portion of the syringe 6 and coupled with an O-ring for sealing the material in the syringe that moves up and down. The lower screw 7 is formed at the lower end of the flanger 7 so as to enable the vertical movement of the lower flanger 7, the syringe 6, the flanger 7 and the ball screw 8. In order to act as a driving unit to enable the operation of the ball screw (8) is configured of a motor (9) connected to the lower end, and the controller 10 for controlling all the operations.

The controller 10 includes a CPU 11 having a built-in control algorithm to enable all operations of the present invention, a key input unit 12 configured to allow a user to set an operation of a dispenser or input a required operation, and the key. Display 13 for displaying the input state of the input unit 12 and the operating state of the dispenser so that the user can be recognized by the control of the CPU 11, the automatic setting in the work process or the user directly input according to the work process Memory 14 for storing one setting mode or the home position information of the motor, an output unit 15 configured to recognize the user with a buzzer or the like when detecting the dispenser abnormality, and the operating power to the controller 10 It consists of the power supply part 16 to apply.

The control algorithm embedded in the CPU 11 discharges the material stored in the syringe 6 by a predetermined amount through the discharge port 3, and stops the discharge operation when the material decreases below the set storage amount. Through the output unit 15 and the display 13, there is a remaining amount detection function for outputting the remaining amount alarm sound and the remaining amount alarm screen to the user to recognize.

The input / output switching valve 4 is connected to the suction port 2 when the plunger 7 is moved downward by the driving of the motor 9 as described in FIGS. 2A to 2B. ) Is sucked into the syringe (6), and when the flanger (7) moves upwards, the connection (1) is switched to the discharge port (3) to discharge the material (1) stored in the syringe (6) through the discharge port (3). According to the raw material, various kinds of valve materials (for example, PVC, PTFE, PFA, etc.) can be selected.

On the other hand, the inlet and the outlet are connected alternately to control the material intake into the syringe 6 and the material discharge into the needle chip (5) through the inlet instead of the input and output switching valve (4) syringe (6) The valve may be configured such that the material suction and discharge are performed at the same time by adjusting the amount of the material sucked into the inside and the amount of the material discharged to the needle chip 5 through the discharge port.

The syringe (Syringe) (6) is in the form of a cylinder can be 5㎛ ~ 50mL or more in size, and can be produced in a variety of materials, such as GLASS, PVC, PTFE, depending on the raw material supplied, of course, cleaning Can be reused by, and detachable with one touch.

The flanger 7 is connected to a ball or slide screw together with a sealing role of the syringe 6 to operate downward and to operate the suction and shutback of the material. Discharge operation toward the chip 5, and the distribution of the discharge amount is discharged as shown in FIG.

The O-ring (not shown) connected to the flanger 7 may be selected from various types of O-rings, such as MBR O-rings and Viton O-rings, depending on the viscosity of the material 1. Seal it.

SUCKBACK is a function for preventing liquid spillage when discharging the material, and as shown in FIG. 3, the shutback is slightly different depending on the viscosity of the material 1, but the material in the syringe 6 is discharged through the discharge port 3. In order to prevent the liquid spill from occurring when stopped immediately after the discharge, the liquid spill is stopped and returned through the reverse rotation step of the motor immediately after discharging the material. At this time, the reverse rotation step is different from the amount and time to reverse the rotation according to the viscosity of the material (1) or by adopting a method of operating the reverse rotation step the same operation twice, it is possible to prevent the liquid spill.

The motor 9 is composed of a servo motor, a step motor, and the like, and a micro step motor may be used.

In the case of the step motor, the discharge is performed in one reverse rotation, and the suction and back (SUCKBACK) operations are performed in the forward rotation. The minimum discharge amount is determined when the step motor is moved by the size of the syringe 6. For example, the minimum motor shift is 0.11133 µl when using a 10 µl syringe and 0.001 ml when using a 50 ml syringe.

The motor 9, the ball screw 7, the plunger 8, the syringe 6 and the input / output switching valve 4 are controlled by a user directly input to the controller 10 according to an automatic setting or a work process. It is automatically controlled by the setting mode of the algorithm.

Looking at the function of the controller 10 as follows.

1.AUTO SHOT MODE Function

When the start signal is input, the discharge operation is automatically performed according to the discharge setting data (discharge amount, discharge time, return to origin, shotback amount, shotback time, etc.) set according to the work flow chart.

2. MANUAL MODE FUNCTION

It operates at the discharge amount per unit time set while inputting the start signal.

3. Origin return mode (ORGIN MODE) function

This mode moves to the origin of the motor (upper cylinder).

After returning to the origin, it initializes the syringe position information and saves the position information of the motor at each suction and discharge, and also backs up the position information to the memory when the power is cut off and resumes operation from the previous state of the motor when the power is applied again. Let's do it.

4. Viscosity compensation mode

In this mode, viscosity is corrected according to the viscosity of the material in order to prevent discharge error due to the difference between the high and low viscosity of the material.

In addition, the dispenser of the present invention is connected to the host computer via a communication (USB drive) to the host computer in order to increase the work efficiency to control from a system device or to visit the workplace in a network (network) or directly wireless The controller 10 may be operated.

Referring to the operation of the syringe pump type dispenser using the motor of the present invention configured as described above are as follows.

First, in a state in which operating power is applied from the power supply unit 16, the control algorithm stored in the memory 14 of the controller 10 is suctioned / discharged according to the working process through the key input unit 12.

After the setting is completed, when the start button formed in the key input unit 12 is pressed, the motor 9 is driven by the control of the CPU 11.

When the motor 9 is driven, the ball screw 8 and the plunger 7 which are connected to each other are driven to operate the dispenser.

Accordingly, the suction and discharge of the material through the suction port 2 and the discharge port 3 are performed according to the rotation (forward or reverse rotation) of the motor 9.

In the reverse rotation of the motor 9, the input / output switching valve 4 is connected to the inlet 2 (FIG. 2A), and the ball screw 8 is rotated by the rotation of the motor 9 so that the ball screw 8 is connected. The plunger 7 is moved downward so that material is sucked into the syringe 6 through the suction port 2.

The material 1 sucked through the suction port 2 and stored in the syringe 6 is discharged through the discharge port 3 by forward rotation of the motor 9 under the control of the CPU 11.

That is, the input / output switching valve 4 is connected to the discharge port 3 from the inlet port 2 by the control of the CPU 11 (FIG. 2B), and the ball screw 8 connected to the motor 9 is rotated. By this, the plunger 7 is moved upward. Accordingly, the material stored in the syringe 6 is discharged to the needle chip 5 through the discharge port 3.

If the material decreases below the set storage amount during this process, the discharging operation is stopped by the control of the CPU 11, and the output is output to the remaining amount alarm sound and the remaining amount alarm screen through the output unit 15 and the display 13. To be aware of.

Meanwhile, in the discharging operation, the plunger 7 is connected to a ball or slide screw and performs a shutback operation together with a sealing role of the syringe 6, as illustrated in FIG. 2B. As shown in the drawing, when the driving of the motor 9 is stopped immediately after discharging the material in the syringe 6 through the discharge port 3, the reverse rotation step of the motor 9 is immediately controlled by the CPU 11. Stopping and returning the liquid by allowing it to be performed.

When the presence or absence of abnormality is detected during the discharge operation of the dispenser, the output unit 15 composed of a buzzer or the like is operated by the control of the CPU 11 to inform the user.

Although the above-described present invention has been described with reference to specific embodiments, the present invention is not limited thereto, and modifications and variations are possible within the scope of the technical idea of the present invention. The scope of the invention is in accordance with the claims.

As described above, the syringe pump dispenser using the motor according to the present invention has various excellent effects as follows.

First, it is possible to apply a material having a stable reproducibility by the pump method using a motor.

Second, the flow and return of the material is possible by controlling the forward and reverse rotation of the motor, so that the accurate amount of material can be distributed.

Third, it is possible to remote control by connection with host computer, and it is helpful for production management by sending application status to host computer by communication mode function.

Fourth, the operation state and abnormality of the dispenser can be easily identified by the display and alarm function.

Claims (6)

A suction port 2 formed for sucking the material 1; A discharge port (3) formed for discharging the material (1) sucked through the suction port (2) to the chip / NEEDLE chip (5); An input / output switching valve (4) configured between the suction port (2) and the discharge port (3) so as to be connected to the suction port (2) and the discharge port (3) at the time of suction or discharge of the material (1); The material 1 sucked through the suction port 2 and the input / output switching valve 4 is connected to the input / output switching valve 4 so as to be discharged to the chip or the needle chip 5 through the discharge port 3. A syringe 6 serving as a storage tank; Combined with an O-ring for sealing of the material 1 in the syringe 6 which is configured to be coupled to the lower part of the syringe 6 to determine the suction amount and the discharge amount of the material 1 in the syringe 6. Screw-shaped plunger 7; A ball screw (8) configured at the lower end of the flanger (7) to enable the vertical operation of the flanger (7); A motor (9) configured to be connected to a lower end of the ball screw (8) to serve as a driving unit to enable the operation of the syringe (6), the flanger (7) and the ball screw (8); And Syringe pump type dispenser using a motor, characterized in that consisting of a controller 10 for controlling all the operations. The method of claim 1, wherein the controller 10 A CPU 11 in which a control algorithm is embedded; A key input unit 12 configured to enable a user to set an operation of the dispenser or input a required operation; A display 13 for displaying the input state of the key input unit 12 so that the user can recognize it under the control of the CPU 11; A memory 14 for storing an automatic setting in a work process or a setting mode directly input by a user according to the work process or storing home position information of a motor; An output unit 15 configured to recognize a user as a buzzer or the like when detecting an abnormality of the dispenser; And Syringe pump type dispenser using a motor, characterized in that consisting of a power supply unit 16 for applying the operating power to the controller (10). The input / output switching valve (4) according to claim 1, wherein the input / output switching valve (4) is connected to the inlet port (2) when the syringe (6) moves downward by driving the motor (9). Suction into the syringe (6) and, when the syringe (6) moves upwards, the material (1) stored in the syringe (6) is switched to the discharge port (3) so as to discharge to the discharge port (3). Syringe pump dispenser The method of claim 1, wherein the CPU 11 discharges the material stored in the syringe 6 by a predetermined amount through the discharge port 3, and stops the discharge operation when the material decreases below the set storage amount. Syringe pump type dispenser using a motor, characterized in that by the control of the output unit 15 and the display 13 through the output of the residual alarm sound and the residual alarm screen to be recognized by the user. The step of suction of the material and the reverse rotation of the motor when the downward movement of the plunger (7) is connected to the ball or slide screw with the sealing role of the syringe (6) Syringe pump type dispenser using a motor, characterized in that for the shutdown (SUCKBACK) operation by the discharge operation to the chip (5) when operating upward. 6. The syringe pump type dispenser using a motor according to claim 5, wherein the shutback operation is capable of preventing liquid spillage by adjusting a shutback amount, an operation time, and a number of times according to a difference in viscosity of the material.

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