Dual-servo variable-ratio metering system

Abstract

The utility model discloses a double servo variable ratio metering system relates to two-component glue delivery system technical field, including lower frame and metering cylinder, the upper surface of lower frame is provided with the upper frame, the output end of servo motor is connected with the screw rod cylinder, the one end of metering cylinder close to the support plate passes through the piston rod, and the piston rod is connected with the screw rod cylinder. And a screw rod shaft is arranged in the screw rod cylinder body. According to the double-servo variable-ratio metering system, in order to set that two-component glue is strictly output according to different proportions and meanwhile ensure that the glue is output in a precise quantity guaranteeing state, two independent movement mechanisms are adopted to execute and guarantee the whole operation system; two sets of servo motors drive a lead screw shaft to rotate, so that a piston rod does piston motion in two metering cylinder bodies, two sets of glue with different components flow from the interiors of the two metering cylinder bodies respectively, and the motion line spacing of the piston rod is accurately controlled by limiting the distance between a sliding block and the end faces of the metering cylinder bodies. Therefore, the output quantity of the two groups of glue is accurately controlled.

Description

Technical Field

[0001] This utility model relates to the technical field of two-component glue delivery systems, specifically a dual-servo variable ratio metering system. Background Technology

[0002] Currently, when metering and conveying adhesives of different components, the different components are often conveyed sequentially. This can cause the later-conveyed adhesive to mix with the residues of the previously conveyed adhesives of different components in the same pipeline, resulting in cross-contamination. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a dual-servo variable ratio metering system, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dual-servo variable ratio metering system, comprising a lower frame and a metering cylinder. An upper frame is mounted on the upper surface of the lower frame, and a servo motor is mounted on one side of the upper frame. The output end of the servo motor is connected to a lead screw cylinder, and a support plate is fixed to the end of the lead screw cylinder away from the servo motor. A support rod is fixed to the side of the support plate, and a metering cylinder is fixed to the end of the support rod away from the support plate. A glue inlet is provided at the bottom of the metering cylinder, and a glue outlet is provided at the top of the metering cylinder. Both the glue outlet and glue inlet ends are equipped with one-way valves. A piston rod passes through the end of the metering cylinder near the support plate. A lead screw shaft is mounted inside the lead screw cylinder, and a movable seat sleeve is fitted on the outer wall of the lead screw shaft. A telescopic rod is connected to the side of the movable seat sleeve.

[0005] Furthermore, a support frame is fixed to the bottom of the lead screw cylinder body, and the lead screw cylinder body is fixed to the upper surface of the lower frame through the support frame and the support plate.

[0006] Furthermore, the support rods are arranged in groups of three, and there are two groups of support rods in total.

[0007] Furthermore, the support rod is perpendicular to the support plate, and a set of the support rods is arranged one-to-one with the metering cylinder.

[0008] Furthermore, one end of the telescopic rod is connected to the output shaft of the servo motor, and the other end of the telescopic rod is fixedly connected to the piston rod.

[0009] Furthermore, a slider is provided at the end of the telescopic rod, and a piston rod is connected to the side of the slider.

[0010] Furthermore, the slider and the side of the metering cylinder are vertically distributed, and the slider and the metering cylinder are arranged one-to-one.

[0011] Furthermore, the bottom of the lower frame is provided with self-locking rollers, and there are a total of four self-locking rollers.

[0012] Furthermore, the upper frame and the lower frame are snap-fitted together, and an observation window is provided on the surface of the upper frame.

[0013] Furthermore, the observation window is located above the metering cylinder and the support plate.

[0014] This utility model provides a dual-servo variable ratio metering system, which has the following beneficial effects:

[0015] 1. This dual-servo variable ratio metering system, in order to ensure the precise output of two-component adhesives under different ratio conditions, employs two independent motion mechanisms to guarantee the overall operation. Specifically, two sets of servo motors drive the lead screw shaft to rotate, causing the piston rod to move inside the two metering cylinders. This allows the two different components of adhesive to flow separately from the two metering cylinders, avoiding cross-contamination. Furthermore, the distance between the slider and the end face of the metering cylinder or a distance sensor is used to precisely control the movement distance of the piston rod, thereby accurately controlling the output amount of the two sets of adhesives. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the upper frame structure of the dual-servo variable ratio metering system of this utility model.

[0017] Figure 2 This is a schematic diagram of the bottom structure of the metering cylinder of the dual-servo variable ratio metering system of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the upper frame of the dual-servo variable ratio metering system of this utility model.

[0019] Figure 4 This utility model relates to a dual-servo variable ratio metering system. Figure 3 Enlarged structural diagram at point A in the middle;

[0020] Figure 5 This is a side view sectional view of the lead screw cylinder of the dual-servo variable ratio metering system of this utility model.

[0021] In the diagram: 1. Lower frame; 2. Upper frame; 3. Servo motor; 4. Lead screw cylinder; 5. Support plate; 6. Support rod; 7. Metering cylinder; 8. Glue inlet; 9. Glue outlet; 10. Check valve; 11. Piston rod; 12. Lead screw shaft; 13. Moving seat sleeve; 14. Telescopic rod; 15. Support frame; 16. Slider; 17. Self-locking roller; 18. Observation window. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figures 1-5 As shown, this utility model provides a technical solution: a dual-servo variable ratio metering system, including a lower frame 1 and a metering cylinder 7. An upper frame 2 is provided on the upper surface of the lower frame 1, and a servo motor 3 is provided on one side of the upper frame 2. The output end of the servo motor 3 is connected to a lead screw cylinder 4, and a support plate 5 is fixed to the end of the lead screw cylinder 4 away from the servo motor 3. A support rod 6 is fixed to the side of the support plate 5, and the metering cylinder 7 is fixed to the end of the support rod 6 away from the support plate 5. A glue inlet 8 is provided at the bottom of the metering cylinder 7, and a glue outlet 9 is provided at the top of the metering cylinder 7. A one-way valve 10 is provided at both the end of the glue outlet 9 and the end of the glue inlet 8. A piston rod 11 passes through the end of the metering cylinder 7 near the support plate 5. A lead screw shaft 12 is provided inside the lead screw cylinder 4, and a movable seat sleeve 13 is fitted on the outer wall of the lead screw shaft 12. A telescopic rod 14 is connected to the side of the movable seat sleeve 13. A support frame 15 is fixed to the bottom of the screw cylinder 4, and the screw cylinder 4 is fixed to the upper surface of the lower frame 1 through the support frame 15 and the support plate 5. The support rods 6 are arranged in groups of three, and there are two groups of support rods 6. The support rods 6 are perpendicular to the support plate 5, and one group of support rods 6 is set one-to-one with the metering cylinder 7. One end of the telescopic rod 14 is connected to the output shaft of the servo motor 3, and the other end of the telescopic rod 14 is fixedly connected to the piston rod 11. The end of the telescopic rod 14 is provided with a slider 16, and the side of the slider 16 is connected to the piston rod 11. The slider 16 is perpendicular to the side of the metering cylinder 7, and the slider 16 is set one-to-one with the metering cylinder 7. The bottom of the lower frame 1 is provided with a self-locking roller 17, and there are four self-locking rollers 17. The upper frame 2 is engaged with the lower frame 1, and the surface of the upper frame 2 is provided with an observation window 18, which is located above the metering cylinder 7 and the support plate 5.

[0024] The specific operation is as follows: the servo motor 3 drives the lead screw shaft 12 to rotate in the forward or reverse direction, so that the moving seat 13 slides along the outer wall of the lead screw shaft 12 toward the servo motor 3 or the metering cylinder 7. When the moving seat 13 slides, it carries the telescopic rod 14 to drive the piston rod 11 to extend and retract along the inside of the metering cylinder 7.

[0025] When the piston rod 11 is pulled outward along the inside of the metering cylinder 7, the one-way valve 10 at the glue inlet 8 opens, while the one-way valve 10 at the glue outlet 9 closes. At this time, the glue enters the two metering cylinders 7 through the glue inlet 8. When the piston rod 11 extends into the inside of the metering cylinder 7, the one-way valve 10 at the glue inlet 8 closes, while the one-way valve 10 at the glue outlet 9 opens. At this time, as the piston rod 11 is pressed in, the glue inside the metering cylinder 7 is discharged outward from the glue outlet 9.

[0026] Since the outer diameter of the slider 16 is larger than the outer diameter of the piston rod 11, as the piston rod 11 is pressed into the metering cylinder 7, the slider 16 gradually approaches the metering cylinder 7 until the slider 16 abuts against the end face of the metering cylinder 7, so that the piston rod 11 can no longer extend into the metering cylinder 7, thereby precisely controlling the amount of glue discharged from the glue outlet 9 each time.

[0027] The observation window 18 allows observation of the state of the slider 16 and piston rod 11 during each extension and translation. The self-locking roller 17 with a self-locking structure allows for easy movement of the entire device for position adjustment when the self-locking roller 17 is unlocked, and when it is self-locked, the entire device can be left idle in a designated position to prevent the device from moving arbitrarily.

[0028] Based on the above description, this utility model establishes a two-component adhesive that is strictly distributed according to different proportions, while ensuring accurate and measured output of the adhesive. It employs two independent motion mechanisms to ensure the overall operation system. Specifically, two servo motors 3 drive the lead screw shaft 12 to rotate, causing the piston rod 11 to move inside the two metering cylinders 7. This allows the two different components of the adhesive to flow from the two metering cylinders 7 respectively. The distance between the slider 16 and the end face of the metering cylinder 7 is used to precisely control the movement distance of the piston rod 11, thereby accurately controlling the output of the two adhesives.

[0029] In summary, when using this dual-servo variable ratio metering system, the servo motor 3 first drives the lead screw shaft 12 to rotate in the forward or reverse direction, so that the moving seat 13 slides along the outer wall of the lead screw shaft 12 toward the servo motor 3 or the metering cylinder 7. When the moving seat 13 slides, it carries the telescopic rod 14 to drive the piston rod 11 to extend and retract along the inside of the metering cylinder 7.

[0030] When the piston rod 11 is pulled outward along the inside of the metering cylinder 7, the one-way valve 10 at the glue inlet 8 opens, while the one-way valve 10 at the glue outlet 9 closes. At this time, the glue enters the two metering cylinders 7 through the glue inlet 8. When the piston rod 11 extends into the inside of the metering cylinder 7, the one-way valve 10 at the glue inlet 8 closes, while the one-way valve 10 at the glue outlet 9 opens. At this time, as the piston rod 11 is pressed in, the glue inside the metering cylinder 7 is discharged outward from the glue outlet 9.

[0031] Since the outer diameter of the slider 16 is larger than that of the piston rod 11, as the piston rod 11 is pressed into the metering cylinder 7, the slider 16 gradually approaches the metering cylinder 7 until the slider 16 abuts against the end face of the metering cylinder 7, preventing the piston rod 11 from extending further into the metering cylinder 7. This allows for precise control of the amount of glue discharged from the glue outlet 9 each time. At the same time, a distance sensor can be embedded on the side of the support plate 5 to monitor the distance between the support plate 5 and the slider 16 in real time. By setting a distance threshold, the servo motor 3 reverses when the slider 16 reaches the upper limit of the distance threshold, and the servo motor 3 rotates forward again when the slider 16 moves back to the lower limit of the distance threshold. This ensures that the piston rod 11 accurately measures the glue each time it extends and retracts to discharge the glue from the metering cylinder 7. The glue discharge volume can be flexibly controlled by changing the distance threshold.

[0032] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A dual-servo variable ratio metering system, comprising a lower frame (1) and a metering cylinder (7), characterized in that: The upper surface of the lower frame (1) is provided with an upper frame (2), and a servo motor (3) is provided on one side of the upper frame (2). The output end of the servo motor (3) is connected to a lead screw cylinder (4), and a support plate (5) is fixed to the end of the lead screw cylinder (4) away from the servo motor (3). A support rod (6) is fixed to the side of the support plate (5), and a metering cylinder (7) is fixed to the end of the support rod (6) away from the support plate (5). The bottom of the metering cylinder (7) is provided with a glue-filled opening. A water inlet (8) is provided, and a glue outlet (9) is provided at the top of the metering cylinder (7). A one-way valve (10) is provided at the end of the glue outlet (9) and the end of the glue inlet (8). A piston rod (11) is provided at one end of the metering cylinder (7) near the support plate (5). A screw shaft (12) is provided inside the screw cylinder (4), and a movable seat sleeve (13) is provided on the outer wall of the screw shaft (12). A telescopic rod (14) is connected to the side of the movable seat sleeve (13).

2. The dual-servo variable ratio metering system according to claim 1, characterized in that: The bottom of the lead screw cylinder (4) is fixed with a support frame (15), and the lead screw cylinder (4) is fixed to the upper surface of the lower frame (1) through the support frame (15) and the support plate (5).

3. The dual-servo variable ratio metering system according to claim 1, characterized in that: The support rods (6) are arranged in groups of three, and there are two groups of support rods (6).

4. The dual-servo variable ratio metering system according to claim 1, characterized in that: The support rod (6) is perpendicular to the support plate (5), and a set of the support rods (6) and the metering cylinder (7) are arranged one-to-one.

5. The dual-servo variable ratio metering system according to claim 1, characterized in that: One end of the telescopic rod (14) is connected to the output shaft of the servo motor (3), and the other end of the telescopic rod (14) is fixedly connected to the piston rod (11).

6. The dual-servo variable ratio metering system according to claim 1, characterized in that: The end of the telescopic rod (14) is provided with a slider (16), and a piston rod (11) is connected to the side of the slider (16).

7. The dual-servo variable ratio metering system according to claim 6, characterized in that: The slider (16) is perpendicular to the side of the metering cylinder (7), and the slider (16) and the metering cylinder (7) are arranged one-to-one.

8. The dual-servo variable ratio metering system according to claim 1, characterized in that: The bottom of the lower frame (1) is provided with self-locking rollers (17), and there are four self-locking rollers (17).

9. The dual-servo variable ratio metering system according to claim 1, characterized in that: The upper frame (2) is engaged with the lower frame (1), and an observation window (18) is provided on the surface of the upper frame (2).

10. The dual-servo variable ratio metering system according to claim 9, characterized in that: The observation window (18) is located above the metering cylinder (7) and the support plate (5).

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