Servo quantitative gluing machine

Abstract

The servo quantitative gluing machine comprises a quantitative assembly and an isolating valve, the quantitative assembly comprises a quantitative cylinder, a glue inlet and a glue outlet, the glue inlet can be controlled to be opened or closed, the isolating valve is arranged in the quantitative cylinder in a single-degree-of-freedom sliding mode and divides the quantitative cylinder into a front cavity and a rear cavity, and the front cavity is communicated with the rear cavity. The rubber inlet is communicated with the front cavity, the rubber outlet is communicated with the rear cavity, and the isolating valve is opened or closed along with sliding of the isolating valve, so that the front cavity and the rear cavity are communicated or isolated; the sizing material inlet and the isolating valve are alternately opened; according to the servo quantitative gluing machine, the quantitative cylinder is arranged and matched with sliding of the isolation valve, it is ensured that the single-time glue discharging amount is stable, the glue discharging speed is uniform, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of glue coating equipment and relates to a servo quantitative glue coating machine. Background Art

[0002] Glue coating machine is a device used to apply high-viscosity glue to the required equipment. Glue coating machine is increasingly widely used in photovoltaic, electronics, automobile and other industries, which can greatly improve work efficiency and reduce manual labor.

[0003] With the development of society, various industries have higher and higher requirements for the glue dispensing accuracy and speed of glue dispensing machines. Existing glue dispensing machines often use pneumatic motors as power sources. The working principle of pneumatic glue dispensing machines is to drive the motor through the power of the air source, and the motor drives the plunger pump to pump glue to complete the coating of the glue. Since the air volume cannot be accurately controlled, the pneumatic glue dispensing machine cannot achieve accurate control of the glue output.

[0004] In order to solve the above problems, a new glue coating machine which can accurately control the glue output amount and glue output speed is needed. Summary of the invention

[0005] In view of this, the present invention provides a servo quantitative glue coating machine, which ensures the stability of the single glue output and the uniform glue output speed by setting a quantitative cylinder and coordinating the sliding of the isolation valve, thereby effectively improving the working efficiency.

[0006] The present invention discloses a servo quantitative glue coating machine, comprising a quantitative component and an isolation valve, wherein the quantitative component comprises a quantitative cylinder, a rubber inlet and a rubber outlet, the rubber inlet can be controlled to be opened or closed, the isolation valve is slidingly arranged in the quantitative cylinder with a single degree of freedom, and separates the quantitative cylinder into a front cavity and a rear cavity, the rubber inlet is connected to the front cavity, the rubber outlet is connected to the rear cavity, and the isolation valve is opened or closed with its own sliding, so that the front cavity and the rear cavity are connected or isolated; the rubber inlet and the isolation valve are opened alternately.

[0007] Furthermore, it also includes an inlet control valve, which is arranged at a position between the rubber inlet and the metering cylinder to control the opening and closing of the rubber inlet, and the inlet control valve and the isolation valve are opened alternately with the sliding of the isolation valve.

[0008] Furthermore, the metering component also includes a fixed seat and a pump seat, and the fixed seat and the pump seat are respectively arranged on both sides of the axial direction of the metering cylinder, the rubber inlet is arranged on the fixed seat and connected with the front cavity of the metering cylinder, and the rubber outlet is arranged on the pump seat and connected with the rear cavity of the metering cylinder.

[0009] Furthermore, it also includes a driving component, which includes a driving source and a piston rod. The piston rod is coaxially arranged with the metering cylinder. One axial end of the piston rod is connected to the driving source, and the other end extends into the metering cylinder and is connected to the isolation valve. The driving source drives the isolation valve to slide through the piston rod.

[0010] Furthermore, the volume of the portion of the piston rod extending into the rear cavity is 1 / 2 of the entire volume of the rear cavity.

[0011] Furthermore, the inlet control valve includes an inlet valve seat, a guide sleeve, a limiting steel ball I and an elastic member I. The fixed seat has a cavity that connects the rubber inlet and the metering cylinder along the axis. The guide sleeve is arranged in the cavity of the fixed seat. The inlet valve seat, the limiting steel ball I and the elastic member I are arranged in sequence from front to back along the axial direction; the limiting steel ball I can be driven to slide along the axial direction to open or close the rubber inlet; the elastic member I is supported by the limiting steel ball I.

[0012] Furthermore, the isolation valve includes an isolation valve seat, a limiting steel ball II and an elastic part II. The isolation valve has an isolation valve inlet, an isolation valve outlet and a valve cavity that are interconnected. The limiting steel ball II and the elastic part II are installed in the valve cavity. The limiting steel ball II can be driven to slide to open or close the isolation valve inlet, and the elastic part II is supported by the limiting steel ball II.

[0013] Furthermore, the drive assembly also includes a reducer, a bearing seat and a transmission pair. The drive source, reducer, transmission pair and piston rod are connected in sequence. The bearing seat is connected to the reducer. A plurality of bearings are arranged in the bearing seat. The plurality of bearings are outer-mounted on the transmission pair to form support and limit for the transmission pair.

[0014] Furthermore, it also includes a connecting component, which includes a connecting rod and a baffle, and the fixed seat and the pump seat are connected by the connecting rod to clamp and fix the metering cylinder; the pump seat is also provided with a connecting seat, and the axial ends of the baffle are respectively connected to the bearing seat and the connecting seat, and multiple baffles are arranged along the circumferential direction.

[0015] Furthermore, it also includes a guide assembly, which includes a guide rod, a guide block and a guide seat;

[0016] The guide rod is arranged along the axial direction, and the two ends of the guide rod are respectively connected to the connecting seat and the bearing seat, and the guide block has a fixed part and a guide part. The fixed part of the guide block is installed at the end of the transmission pair, and the guide part of the guide block is slidably arranged on the guide rod;

[0017] The guide seat is arranged at the axial end of the outlet valve seat, and the connecting seat limits the guide seat to the end of the outlet valve seat in the axial direction; the guide seat is provided with an oil injection nozzle in the radial direction.

[0018] Beneficial effects of the present invention:

[0019] The present invention discloses a servo quantitative glue coating machine. By setting a quantitative cylinder, the glue output in a single working cycle of the glue coating machine is ensured to be constant. An isolation valve is used as a piston to pump the glue outward. The isolation valve can realize two actions of squeezing out glue during a single reciprocating sliding process, realizing the functions of one-way glue replenishment and two-way glue supply. The isolation valve is driven to slide by a driving source in cooperation with a reducer, ensuring uniform and stable power output, thereby ensuring the stability of the glue output speed. The volume of the part of the piston rod extending into the rear cavity is 1 / 2 of the overall volume of the rear cavity, so that the glue output of the two glue outputs during a single reciprocating sliding of the isolation valve is the same, further ensuring the stability of the glue output. The present invention has one-way glue replenishment and two-way glue supply, accurately controls the glue output amount and glue output speed, and effectively improves the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure and medium flow direction under the compression stroke of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure and medium flow direction under the stretching stroke of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the metering cylinder of the present invention;

[0023] Figure 4 It is a schematic diagram of the installation of the reducer seat and the bearing seat of an embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of the installation of the guide block, linear bearing and guide rod of an embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the installation of the pump seat and the connecting seat of the embodiment of the present invention

[0026] Figure 7 It is a schematic diagram of the installation of the guide seat and the pump seat of the present invention;

[0027] Reference numerals:

[0028] 1. Servo motor; 2. Speed ​​reducer; 3. Speed ​​reducer seat; 4. Coupling; 5. Thrust ball bearing; 6. Thrust ball bearing; 7. Needle bearing; 8. Ball screw pair; 9. Bearing seat; 10. Screw; 11. Open sleeve; 12. Sleeve; 13. Bayonet; 14. Piston rod; 15. Side baffle; 16. Connecting seat; 17. Guide seat; 18. Sliding bearing; 19. Pump seat seal ring; 20. Pump seat; 21. Elastic Part II; 22, isolation valve seat; 23, metering cylinder; 24, connecting rod; 25, O-ring; 26, fixed seat; 27, guide sleeve; 28, inlet valve seat; 29, rubber inlet; 30, limit steel ball I; 31, high-pressure sealing ring; 32, rubber outlet; 33, limit steel ball II; 34, oiling nozzle; 35, front and rear baffles; 36, guide rod; 37, linear bearing; 38, guide block; 39, elastic part I. DETAILED DESCRIPTION

[0029] It should be noted that, in the description of this specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise specified, the radial direction in this embodiment is the diameter direction of the metering cylinder, the axial direction is the axial direction of the metering cylinder, and the circumferential direction is the circumferential direction of the metering cylinder.

[0030] As shown in the figure, an embodiment of the present invention provides a servo quantitative glue coating machine, including a quantitative component and an isolation valve, wherein the quantitative component includes a quantitative cylinder 23, a rubber inlet 29 and a rubber outlet 32, wherein the rubber inlet 29 can be controlled to be opened or closed, and the isolation valve is slidably arranged in the quantitative cylinder 23 with a single degree of freedom, and separates the quantitative cylinder 23 into a front cavity and a rear cavity, wherein the rubber inlet 29 is connected to the front cavity, and the rubber outlet 32 ​​is connected to the rear cavity, and the isolation valve is opened or closed with its own sliding, so that the front cavity and the rear cavity are connected or isolated; the rubber inlet 29 and the isolation valve are opened alternately. In this embodiment, an inlet control valve is also included, wherein the inlet control valve is arranged at a position between the rubber inlet 29 and the quantitative cylinder 23 to control the opening and closing of the rubber inlet 29, and the inlet control valve and the isolation valve are opened alternately with the sliding of the isolation valve. In this embodiment, the quantitative assembly further includes a fixing seat 26 and a pump seat 20, and the fixing seat 26 and the pump seat 20 are respectively and correspondingly arranged on both sides of the axial direction of the quantitative cylinder 23, the rubber inlet 29 is arranged on the fixing seat 26 and communicated with the front cavity of the quantitative cylinder 23, and the rubber outlet 32 ​​is arranged on the pump seat 20 and communicated with the rear cavity of the quantitative cylinder 23. In this embodiment, the rubber inlet 29 serves as a rubber replenishing port of the quantitative cylinder 23, and is used to replenish the rubber into the quantitative cylinder 23. The rubber outlet 32 ​​is always in an open state, and the sliding of the isolation valve is accompanied by the opening and closing of the isolation valve, so as to realize the discharging of the rubber. The isolating valve divides the metering cylinder 23 into a front chamber and a rear chamber. The front and the rear here are based on the flow direction of the rubber, and the front is the one into which the rubber flows first. In this embodiment, the front chamber is specifically the cavity between the isolating valve and the rubber inlet 29 in the metering cylinder 23, and the rear chamber is specifically the cavity between the isolating valve and the rubber outlet 32 ​​in the metering cylinder 23. As the isolating valve slides, the actual volumes of the front chamber and the rear chamber change. When the isolating valve slides to the extreme position in the metering cylinder 23, the front cylinder or the rear cylinder may even disappear, but as the isolating valve leaves the extreme position, it will reappear. This is understandable to those skilled in the art and will not be elaborated here.

[0031] In this embodiment, when the isolation valve slides from back to front, that is, in the compression stroke, the isolation valve opens, the front chamber is connected with the rear chamber, and the rubber in the front chamber is axially pressurized to flow toward the rear chamber. At the same time, the pressure of the inlet control valve increases and closes, the rubber inlet 29 is closed, and the rubber replenishment is stopped until the isolation valve slides to the position of the cylinder head that abuts against the metering cylinder 23 (the cylinder head here refers to the inlet of the metering cylinder 23, that is, the mounting end face of the fixed seat 26 shown in the figure in this embodiment), all the rubber in the front chamber enters the rear chamber, and a part of the rubber that enters the rear chamber is discharged through the rubber outlet 32, and the rest is retained in the rear chamber; after the isolation valve slides to the cylinder head that abuts against the metering cylinder 23, it immediately slides in the opposite direction. Move, slide from front to back, that is, stretch stroke, at this time, the isolation valve is closed, the front cavity and the rear cavity become two independent cavities, as the isolation valve slides backward, the remaining rubber is discharged from the rubber outlet 32 ​​under the extrusion of the isolation valve, until the isolation valve slides backward to the bottom of the cylinder (the bottom of the cylinder here refers to the outlet of the metering cylinder 23, that is, the installation end face of the pump seat 20 shown in the figure in this embodiment), the remaining rubber in the rear cavity is completely discharged; in the process of the isolation valve sliding backward, the front cavity becomes a negative pressure state, and at the same time the inlet control valve opens, and starts to replenish the rubber into the metering cylinder 23. When the rubber in the rear cavity is completely discharged, the front cavity is also filled with glue. The above is a working cycle. It can be seen that in one working cycle, the isolation valve slides twice in both directions to achieve two glue discharges, and the unidirectional glue is replenished once, realizing unidirectional glue replenishment and bidirectional glue supply. The alternating opening in this embodiment means that when the isolation valve is opened, the inlet control valve is closed, and when the inlet control valve is opened, the isolation valve is closed. The two are switched alternately, and are not opened or closed at the same time.

[0032] In this embodiment, a driving assembly is also included, and the driving assembly includes a driving source and a piston rod 14. The piston rod 14 is coaxially arranged with the metering cylinder 23. One end of the piston rod 14 is connected to the driving source, and the other end extends into the metering cylinder 23 and is connected to the isolation valve. The driving source drives the isolation valve to slide through the piston rod 14. In this embodiment, the volume of the piston rod 14 extending into the rear cavity is 1 / 2 of the overall volume of the rear cavity. As shown in the figure, in this embodiment, the driving source drives the isolation valve to slide through the piston rod 14 to achieve glue discharge and glue replenishment. The piston rod 14 will enter the rear cavity of the metering cylinder 23 with the sliding of the isolation valve. The sliding of the isolation valve will cause the volume of the front cavity to be compressed, and the compressed volume of the front cavity is converted into the volume of the rear cavity. However, the existence of the piston rod 14 makes the actual volume of the rear cavity smaller than the reduced volume of the front cavity, but the volume of the rubber entering the rear cavity remains unchanged. Therefore, a part of the rubber will be squeezed out of the metering cylinder 23 due to the existence of the piston rod 14, thereby achieving glue discharge. In this embodiment, the volume of the part of the piston rod 14 that enters the metering cylinder 23 is set to 1 / 2 of the volume of the metering cylinder 23, that is, half, which ensures that the glue output in the compression stroke and the glue output in the stretching stroke are the same, both of which are half of the total glue output of the metering cylinder 23.

[0033] In this embodiment, the inlet control valve includes an inlet valve seat 28, a guide sleeve 27, a limiting steel ball Ⅰ30 and an elastic member Ⅰ39. The fixed seat 26 has a cavity that connects the rubber inlet 29 and the metering cylinder 23 along the axis. The guide sleeve 27 is arranged in the cavity of the fixed seat 26. The inlet valve seat 28, the limiting steel ball Ⅰ30 and the elastic member Ⅰ39 are arranged in sequence from front to back along the axial direction; the limiting steel ball Ⅰ30 can be driven to slide along the axial direction to open or close the rubber inlet 29; the elastic member Ⅰ39 is supported by the limiting steel ball Ⅰ30. In this embodiment, the isolation valve includes an isolation valve seat 22, a limit steel ball II 33 and an elastic member II 21. The isolation valve has an isolation valve inlet, an isolation valve outlet and a valve cavity that are interconnected. The limit steel ball II 33 and the elastic member II 21 are installed in the valve cavity. The limit steel ball II 33 can be driven to slide to open or close the isolation valve inlet. The elastic member II 21 abuts against the limit steel ball II 33. The isolation valve seat 22 is also provided with a high-pressure sealing ring 31, which is used to separate the fluids before and after the isolation valve. The inlet control valve and the isolation valve in this embodiment have the same working principle, and both use a steel ball to close the inlet to achieve the opening and closing control of the channel. In the compression stroke, under the dual action of the pressure in the front chamber and the elastic force of the elastic member Ⅰ39, the limit steel ball Ⅰ30 is pressed against the inlet valve seat 28, thereby cutting off the connection between the rubber inlet 29 and the front chamber. At the same time, in the compression stroke, the rubber in the front chamber acts on the limit steel ball Ⅱ33. As the compression progresses, the pressure gradually increases. The rubber pushes the limit steel ball Ⅱ33 open, the isolation valve opens, and the rubber enters the rear chamber. In the stretching stroke, the opposite is true. The rear chamber is compressed, and the pressure in the rear chamber increases. Under the dual action of the pressure of the rear chamber and the elastic force of the elastic member II 21, the limiting steel ball II 33 is pressed against the outlet valve seat, thereby cutting off the connection between the rear chamber and the front chamber, and a vacuum is generated in the front chamber of the metering cylinder 23. When the force generated by the vacuum is greater than the self-weight of the limiting steel ball I 30 and the elastic force of the elastic member I 39, the limiting steel ball I 30 rises, the inlet control valve opens, the front chamber is connected with the rubber inlet 29, and the rubber enters the metering cylinder 23, realizing one-way feeding and two-way feeding. In this embodiment, the elastic member I 39 and the elastic member II 21 are both springs, and the contact position of the inlet valve seat 28 with the limiting steel ball I 30 and the contact position of the outlet valve seat with the limiting steel ball II 33 are both provided with inclined surfaces, so that the contact of the inlet valve seat 28 with the limiting steel ball I 30 and the contact of the outlet valve seat with the limiting steel ball II 33 are both tangent, which effectively improves the sealing performance of the device as a whole.

[0034] In this embodiment, the drive assembly also includes a reducer, a bearing seat 9 and a transmission pair. The drive source, reducer, transmission pair and piston rod 14 are connected in sequence. The bearing seat 9 is connected to the reducer. A plurality of bearings are arranged in the bearing seat 9. The plurality of bearing sleeves 12 are arranged on the transmission pair to form support and limit for the transmission pair. In this embodiment, the drive source is a servo motor 1, the reducer includes a reducer 2 and a reducer seat 3, and the transmission pair is a ball screw pair 8. As shown in the figure, the output shaft of the servo motor 1 is connected to the input shaft of the reducer 2, the output shaft of the reducer 2 is connected to the coupling 4, the coupling 4 is fixedly connected to the ball nut of the ball screw pair 8, the inner hole at the upper end of the coupling 4 is provided with a keyway, and the keyway is matched with the flat key of the output shaft of the reducer 2. There is a step deep in the inner hole of the coupling 4, and the step limits the upper limit position of the ball screw. The reducer 2 is fixed on the reducer seat 3 by screws 10, and the reducer seat 3 is fixed on the bearing seat 9 by screws 10. A thrust ball bearing 5 is also arranged in the reducer seat 3. The inner ring of the thrust ball bearing is connected to the outer circle of the coupling 4 and is placed in the reducer seat 3. The multiple bearings arranged in the bearing seat 9 are combined bearings composed of thrust ball bearings 6 and needle bearings 7. The combined bearing is placed on the outer circle of the ball screw nut, and one end face thereof is pressed against the upper end of the bearing seat 9. The needle bearing 7 is placed in contact with the combined bearing and is placed in the inner hole of the bearing seat 9. The end of the screw of the ball screw pair 8 is fixedly connected with the piston rod 14 through an open sleeve 11, a sleeve 12, and a bayonet 13. The open sleeve 11 is composed of two pairs of halves. The inner circle of the open sleeve 11 is connected with the screw of the ball screw pair 8 and the outer circle of the piston rod 14. The inner hole of the sleeve 12 is in contact with the outer circle of the open sleeve 11. The bayonet 13 clamps the upper end of the piston rod 14 to prevent the sleeve 12 from sliding down. The above is one of the connection methods of the drive assembly in this embodiment. Those skilled in the art may also realize the construction of the drive assembly through other methods or components, preferably with smooth transmission. This is understandable to those skilled in the art and will not be described in detail here. In this embodiment, the servo motor 1 drives the reducer 2 to rotate, the reducer 2 drives the coupling 4 to rotate, the coupling 4 drives the nut of the ball screw to rotate, and then drives the screw shaft of the ball screw and the piston rod 14 to reciprocate up and down. The moving speed and moving position of the piston rod 14 are controlled by controlling the speed and rotation angle of the servo motor 1, thereby realizing accurate control of the glue output amount and glue output speed.

[0035] In this embodiment, a connecting assembly is also included, and the connecting assembly includes a connecting rod 24 and a baffle. The fixing seat 26 and the pump seat 20 are connected through the connecting rod 24 and clamp the metering cylinder 23. The connecting rod 24 in this embodiment is a hexagon socket screw. After the connecting rod 24 connects the inlet valve seat 28 and the outlet valve seat, the inlet valve seat 28 and the outlet valve seat clamp the metering cylinder 23 in the axial direction, so that the inlet valve seat 28, the outlet valve seat and the metering cylinder 23 form a detachable whole as shown in the figure. The contact surfaces of the pump seat 20 and the fixing seat 26 and the metering cylinder 23 are all provided with an O-ring 25 as shown in the figure. The O-ring 25 is made of fluororubber and is used to prevent the fluid in the metering cylinder 23 from leaking.

[0036] In this embodiment, the pump seat 20 is further provided with a connecting seat 16, and the two ends of the baffle plate in the axial direction are respectively connected to the bearing seat 9 and the connecting seat 16, and the baffle plate is provided with a plurality of baffle plates along the circumferential direction. In this embodiment, there are a plurality of baffle plates, namely, a side baffle plate 15 and a front and rear baffle plates 35, and the bearing seat 9 and the connecting seat 16 are fixedly connected through the side baffle plates 15 on the left and right sides and the two front and rear baffle plates 35.

[0037] In this embodiment, a guide assembly is also included, and the guide assembly includes a guide rod 36, a guide block 38 and a guide seat 17;

[0038] The guide rod 36 is arranged axially, and the two axial ends of the guide rod 36 are respectively connected to the connecting seat 16 and the bearing seat 9 accordingly. The guide block 38 has a fixed part and a guiding part. The fixed part of the guide block 38 is installed at the end of the transmission pair, and the guiding part of the guide block 38 is slidably arranged on the guide rod 36; the fixed part of the guide block 38 is fixedly connected to the screw rod of the ball screw through two screws 10, and the linear bearing 37 is fixedly embedded in the guiding part as shown in the figure. One end of the guide rod 36 is connected to the bearing seat 9 through a thread, and the other end is placed in the circular groove on the upper end surface of the connecting seat 16; the guide block 38 and the guide rod 36 have the function of providing guidance for the screw rod. The guide rod 36 can prevent the screw shaft of the ball screw from rotating. When the ball screw reciprocates up and down, it drives the guide block 38 and the linear bearing 37 to slide up and down on the guide rod 36.

[0039] The guide seat 17 is arranged at the axial end of the outlet valve seat, and a sliding bearing 18 and a pump seat sealing ring 19 are arranged in the guide seat 17. The connecting seat 16 limits the guide seat 17 at the end of the outlet valve seat in the axial direction; the guide seat 17 is provided with an oiling nozzle 34 in the radial direction. The sliding bearing 18 guides the piston rod 14 to ensure the straightness of the piston rod 14 running up and down, and the pump seat sealing ring 19 is used to prevent fluid leakage from the inner hole at the lower end of the pump seat 20; the oiling nozzle 34 is a one-way valve, which can regularly inject lubricating oil and plasticizer into the inner hole of the guide seat 17 to lubricate the piston rod 14 and the sliding bearing 18, and dissolve the solidified rubber inside.

[0040] The glue coating machine in this embodiment is also provided with a coating system for coating glue and a glue supply system for supplying glue. The coating system and the glue supply system can be selected according to actual production needs, which can be understood by those skilled in the art and will not be elaborated here.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A servo quantitative glue coating machine, characterized in that: It includes a dosing component and an isolation valve. The dosing component includes a dosing cylinder, a rubber inlet and a rubber outlet. The rubber inlet can be controlled to be opened or closed. The isolation valve is slidably arranged in the dosing cylinder with a single degree of freedom, and separates the dosing cylinder into a front cavity and a rear cavity. The rubber inlet is connected to the front cavity, and the rubber outlet is connected to the rear cavity. The isolation valve opens or closes with its own sliding, so that the front cavity and the rear cavity are connected or isolated; the rubber inlet and the isolation valve are opened alternately.

2. The servo quantitative glue coating machine according to claim 1 is characterized in that: It also includes an inlet control valve, which is arranged between the rubber inlet and the metering cylinder to control the opening and closing of the rubber inlet. The inlet control valve and the isolation valve are opened alternately with the sliding of the isolation valve.

3. The servo quantitative glue coating machine according to claim 2 is characterized in that: The metering component also includes a fixing seat and a pump seat, which are respectively arranged on both sides of the axial direction of the metering cylinder. The rubber inlet is arranged on the fixing seat and communicated with the front cavity of the metering cylinder. The rubber outlet is arranged on the pump seat and communicated with the rear cavity of the metering cylinder.

4. The servo quantitative glue coating machine according to claim 1, characterized in that: It also includes a driving component, which includes a driving source and a piston rod. The piston rod is coaxially arranged with the metering cylinder, one axial end of the piston rod is connected to the driving source, and the other end extends into the metering cylinder and is connected to the isolation valve. The driving source drives the isolation valve to slide through the piston rod.

5. The servo quantitative glue coating machine according to claim 4 is characterized in that: The volume of the portion of the piston rod extending into the rear cavity is 1 / 2 of the overall volume of the rear cavity.

6. The servo quantitative glue coating machine according to claim 3, characterized in that: The inlet control valve includes an inlet valve seat, a guide sleeve, a limiting steel ball I and an elastic member I. The fixed seat has a cavity that connects the rubber inlet and the metering cylinder along the axis. The guide sleeve is arranged in the cavity of the fixed seat. The inlet valve seat, the limiting steel ball I and the elastic member I are arranged in sequence from front to back along the axial direction; the limiting steel ball I can be driven to slide along the axial direction to open or close the rubber inlet; the elastic member I is supported by the limiting steel ball I.

7. The servo quantitative glue coating machine according to claim 1, characterized in that: The isolation valve includes an isolation valve seat, a limiting steel ball II and an elastic part II. The isolation valve has an isolation valve inlet, an isolation valve outlet and a valve cavity that are interconnected. The limiting steel ball II and the elastic part II are installed in the valve cavity. The limiting steel ball II can be driven to slide to open or close the isolation valve inlet, and the elastic part II is supported by the limiting steel ball II.

8. The servo quantitative glue coating machine according to claim 4, characterized in that: The drive assembly also includes a reducer, a bearing seat and a transmission pair. The drive source, reducer, transmission pair and piston rod are connected in sequence. The bearing seat is connected to the reducer. A plurality of bearings are arranged in the bearing seat. The plurality of bearings are outer-mounted on the transmission pair to form support and limit for the transmission pair.

9. The servo quantitative glue coating machine according to claim 3, characterized in that: It also includes a connecting component, which includes a connecting rod and a baffle. The fixed seat and the pump seat are connected by the connecting rod and clamp the metering cylinder. The pump seat is also provided with a connecting seat, and the axial ends of the baffle are respectively connected to the bearing seat and the connecting seat, and multiple baffles are arranged along the circumferential direction.

10. The servo quantitative glue coating machine according to claim 3, characterized in that: It also includes a guide assembly, which includes a guide rod, a guide block and a guide seat; The guide rod is arranged along the axial direction, and the two ends of the guide rod are respectively connected to the connecting seat and the bearing seat, and the guide block has a fixed part and a guide part. The fixed part of the guide block is installed at the end of the transmission pair, and the guide part of the guide block is slidably arranged on the guide rod; The guide seat is arranged at the axial end of the outlet valve seat, and the connecting seat limits the guide seat to the end of the outlet valve seat in the axial direction; the guide seat is provided with an oil injection nozzle in the radial direction.

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