Quantitative glue discharging device for gluing machine

Abstract

The quantitative glue discharging device 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 the isolating valve is arranged in the quantitative cylinder in a single-degree-of-freedom sliding mode. The isolating valve is arranged in the quantitative cylinder and divides the quantitative cylinder into a front cavity and a rear cavity, the sizing material inlet is communicated with the front cavity, the sizing material 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 quantitative glue discharging device for the gluing machine, the quantitative cylinder is arranged and is matched with the sliding of the isolating valve, so that the stable single-time glue discharging amount and the uniform glue discharging speed are ensured, and the working efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gluing equipment relates to a kind of quantitative glue outlet device for gluing machine. BACKGROUND

[0002] The gluing machine is a device for coating high-viscosity glue on the required equipment, and is increasingly widely used in photovoltaic, electronic, automotive and other industries, which can greatly improve work efficiency and reduce manual labor.

[0003] With the development of society, the industries have higher and higher requirements for the glue output precision and speed of the gluing machine. The existing gluing machine commonly uses a pneumatic motor as a power source. The working principle of the pneumatic gluing machine is to drive the motor by air power, and the motor drives the plunger pump to pump glue, thereby completing the coating of the glue. Since the air volume cannot be accurately controlled, the pneumatic gluing machine cannot accurately control the glue output.

[0004] To solve the above problems, a new glue outlet device capable of accurately controlling the glue output and speed is needed. INVENTION CONTENTS

[0005] Therefore, the utility model provides a kind of quantitative glue outlet device for gluing machine, by setting up quantitative cylinder, cooperate the sliding of isolating valve, ensure that single glue output is stable, glue output speed is uniform, effectively improve work efficiency.

[0006] The utility model discloses a kind of quantitative glue outlet device for gluing machine, comprising:

[0007] Quantitative component, the quantitative component includes quantitative cylinder, isolating valve, glue inlet and glue outlet, the glue inlet can be controlled to open or close, the isolating valve single degree of freedom is slid and is arranged in the quantitative cylinder, and the quantitative cylinder is divided into front cavity and rear cavity, the glue inlet is communicated with the front cavity, the glue outlet is communicated with the rear cavity, the isolating valve opens or closes with the sliding of itself, so that the front cavity and rear cavity are communicated or isolated;The glue inlet and the isolating valve are alternately set to open;

[0008] Drive component, the drive component includes drive source, transmission pair and piston rod, the piston rod is coaxially arranged with the quantitative cylinder, piston rod axial one end is connected to the drive source by the transmission pair, the other end extends into the quantitative cylinder and is connected with the isolating valve, the drive source drives the isolating valve to slide by the piston rod.

[0009] Further, 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.

[0010] Further, an inlet control valve is arranged at a position between the rubber material inlet and the metering cylinder to control opening and closing of the rubber material inlet, and the inlet control valve and the isolation valve are alternately opened with sliding of the isolation valve.

[0011] Further, the metering assembly further comprises a fixed seat and a pump seat, which are respectively arranged at two sides of the axial direction of the metering cylinder, the rubber material inlet is arranged at the fixed seat and communicates with the front cavity of the metering cylinder, and the rubber material outlet is arranged at the pump seat and communicates with the rear cavity of the metering cylinder.

[0012] Further, the inlet control valve comprises an inlet valve seat, a guide sleeve, a limiting steel ball I and an elastic element I, the fixed seat has a cavity along the axis to communicate the rubber material inlet and the metering cylinder, the guide sleeve is arranged in the cavity of the fixed seat, the inlet valve seat, the limiting steel ball I and the elastic element I are sequentially arranged 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 material inlet, and the elastic element I abuts against the limiting steel ball I.

[0013] Further, the isolation valve comprises an isolation valve seat, a limiting steel ball II and an elastic element II, the isolation valve has an isolation valve inlet, an isolation valve outlet and a valve cavity which communicate with each other, the limiting steel ball II and the elastic element 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 element II abuts against the limiting steel ball II.

[0014] Further, the drive assembly further comprises a speed reducer and a bearing seat, the drive source, the speed reducer, the transmission pair and the piston rod are sequentially connected, the bearing seat is connected to the speed reducer, a plurality of bearings are arranged in the bearing seat, and the plurality of bearings are sleeved on the transmission pair to form support and limiting of the transmission pair.

[0015] Further, a connecting assembly is further included, the connecting assembly comprises a connecting rod and a baffle, the fixed seat and the pump seat are connected by the connecting rod and clamped and fixed to the metering cylinder, the pump seat is further provided with a connecting seat, axial two ends of the baffle are respectively connected to the bearing seat and the connecting seat, and the baffle is provided with a plurality of baffle plates along the circumferential direction.

[0016] Further, a guide assembly is further included, the guide assembly comprises a guide rod, a guide block and a guide seat.

[0017] The guide rod is arranged along the axial direction, axial two ends of the guide rod are respectively connected to the connecting seat and the bearing seat, 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 slidingly arranged on the guide rod.

[0018] The guide seat is arranged at the axial end of the outlet valve seat, the connecting seat limits the guide seat at the axial end of the outlet valve seat, and the guide seat is provided with an oil injection nozzle in the radial direction.

[0019] The present application has the advantages of:

[0020] The utility model discloses a kind of quantitative glue discharging devices for gluing machine, by setting quantitative cylinder, ensure that the glue discharging amount is constant in single work cycle of gluing machine;Use isolation valve as piston to pump out glue material, realize twice extrusion glue action in the process of single reciprocating sliding of isolation valve, realize the function of one-way glue supplement, bidirectional glue supply;Drive isolation valve sliding by driving source cooperation speed reducer, ensure that power output is uniform and stable, and then ensure that glue discharging speed is stable;The volume of piston rod extension into rear cavity portion is 1 / 2 of the overall volume of rear cavity, so that the glue discharging amount of twice glue discharging in the process of single reciprocating sliding of isolation valve is same, further ensure the stability of glue discharging amount.The utility model one-way glue supplement, bidirectional glue supply, accurately control glue discharging amount and glue discharging speed, effectively improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 For the structure diagram and medium flow direction diagram of the compression stroke of the utility model;

[0022] Figure 2 For the structure diagram and medium flow direction diagram of the stretching stroke of the utility model;

[0023] Figure 3 For the structure diagram of quantitative cylinder of the utility model;

[0024] Figure 4 For the installation diagram of speed reducer seat and bearing seat of the embodiment of the utility model;

[0025] Figure 5 For the installation diagram of guide block, linear bearing and guide rod of the embodiment of the utility model;

[0026] Figure 6 For the installation diagram of pump seat and connecting seat of the embodiment of the utility model

[0027] Figure 7 For the installation diagram of guide seat and pump seat of the utility model;

[0028] REFERENCE SIGNS:

[0029] 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 pin; 14 piston rod; 15 side baffle; 16 connecting seat; 17 guide seat; 18 sliding bearing; 19 pump seat sealing ring; 20 pump seat; 21 elastic member II; 22 isolation valve seat; 23 quantitative cylinder; 24 connecting rod; 25 O-shaped sealing ring; 26 fixed seat; 27 guide sleeve; 28 inlet valve seat; 29 rubber material inlet; 30 limit steel ball I; 31 high pressure sealing ring; 32 rubber material outlet; 33 limit steel ball II; 34 oil injection nozzle; 35 front and rear baffle; 36 guide rod; 37 linear bearing; 38 guide block; 39 elastic member I. DETAILED DESCRIPTION

[0030] It should be noted that in the description of the present application, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. If not otherwise specified, the radial direction in the present embodiment is the diameter direction of the quantitative cylinder, the axial direction is the axis direction of the quantitative cylinder, and the circumferential direction is the circumferential direction of the quantitative cylinder.

[0031] As shown in the figure, the embodiment of the utility model discloses a kind of quantitative glue outlet device for gluing machine, including quantitative component and isolating valve, the quantitative component includes quantitative cylinder 23, glue inlet 29 and glue outlet 32, the glue inlet 29 can be controlled to open or close, the isolating valve single degree of freedom sliding is arranged in the quantitative cylinder 23, and the quantitative cylinder 23 is divided into front cavity and rear cavity, the glue inlet 29 is communicated with the front cavity, the glue outlet 32 is communicated with the rear cavity, the isolating valve opens or closes with the sliding of itself, so that the front cavity and rear cavity are communicated or isolated;The glue inlet 29 is alternately opened with the isolating valve arrangement.This embodiment further includes inlet control valve, the inlet control valve is arranged at the position between the glue inlet 29 and the quantitative cylinder 23 to control the opening and closing of the glue inlet 29, the inlet control valve and the isolating valve are alternately opened with the sliding of the isolating valve.This embodiment, the quantitative component further includes fixed seat 26 and pump seat 20, the fixed seat 26 and pump seat 20 are correspondingly arranged at the axial both sides of the quantitative cylinder 23, the glue inlet 29 is arranged in the fixed seat 26 and communicated with the front cavity of the quantitative cylinder 23, the glue outlet 32 is arranged in the pump seat 20 and communicated with the rear cavity of the quantitative cylinder 23.This embodiment, glue inlet 29 as the glue replenishing port of quantitative cylinder 23, for supplementing glue to quantitative cylinder 23, glue outlet 32 is always in the open state, the sliding of isolating valve is accompanied by the opening and closing of isolating valve, realizes glue outlet.Isolating valve divides quantitative cylinder 23 into front cavity and rear cavity, the front and rear here are based on the flow direction of glue, and glue flows into first as front, in the embodiment, front cavity is specifically the cavity between isolating valve and glue inlet 29 in quantitative cylinder 23, rear cavity is specifically the cavity between isolating valve and glue outlet 32 in quantitative cylinder 23, with the sliding of isolating valve, the actual volume of front cavity and rear cavity is changing, when isolating valve slides to the limit position in quantitative cylinder 23, front cylinder or rear cylinder can even disappear, but with isolating valve leaving limit position, it appears again, this is understood by those skilled in the art, and not described here.

[0032] In the embodiment, when the isolation valve slides from back to front, that is, in the compression stroke, the isolation valve is opened, the front cavity and the rear cavity are communicated, the rubber in the front cavity flows to the rear cavity under axial pressure, at the same time, the pressure of the inlet control valve increases to be closed, the rubber inlet 29 is closed, the rubber supplement is stopped, until the isolation valve slides to the position of the cylinder head of the quantitative cylinder 23 (the cylinder head here is the inlet of the quantitative cylinder 23, that is, the mounting end surface of the fixed seat 26 shown in the embodiment), at which time all the rubber in the front cavity enters the rear cavity, and the rubber entering the rear cavity is partially discharged through the rubber outlet 32, and the remaining rubber is retained in the rear cavity; after the isolation valve slides to the position of the cylinder head of the quantitative cylinder 23, it immediately slides reversely, that is, from front to back, that is, the stretching stroke, at this time the isolation valve is closed, the front cavity and the rear cavity become two independent cavities, with the backward sliding of the isolation valve, the remaining rubber is discharged through the rubber outlet 32 under the extrusion of the isolation valve, until the isolation valve slides to the bottom of the cylinder (the bottom of the cylinder here is the outlet of the quantitative cylinder 23, that is, the mounting end surface of the pump seat 20 shown in the embodiment), at which time the remaining rubber in the rear cavity is completely discharged; in the process of backward sliding of the isolation valve, the front cavity becomes a negative pressure state, at the same time the inlet control valve is opened, and the rubber supplement to the quantitative cylinder 23 is started, when the rubber in the rear cavity is completely discharged, the rubber supplement in the front cavity is also completed, which is one working cycle. As can be seen, in one working cycle, the isolation valve slides twice in two directions, realizes twice rubber discharging, and supplements rubber once in one direction, realizes one-way rubber supplement and two-way rubber supply. The alternate opening in the embodiment means that when the isolation valve is opened, the inlet control valve is closed, when the inlet control valve is opened, the isolation valve is closed, and the two are alternately opened and closed, not opened or closed at the same time.

[0033] The embodiment also comprises a driving assembly, which comprises a driving source and a piston rod 14 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 the embodiment, the volume of the piston rod 14 extending into the rear cavity portion is 1 / 2 of the overall volume of the rear cavity. As shown in the figure, in the embodiment, the driving source drives the isolation valve to slide through the piston rod 14 to realize glue discharge and glue replenishment. The piston rod 14 enters the rear cavity of the metering cylinder 23 with the sliding of the isolation valve. The sliding of the isolation valve causes the volume of the front cavity to be compressed. The volume of the front cavity compressed is converted into the volume of the rear cavity. However, the presence of the piston rod 14 makes the actual volume of the rear cavity smaller than the volume of the front cavity compressed. However, the volume of the glue entering the rear cavity is unchanged. Therefore, a part of the glue is squeezed out of the metering cylinder 23 due to the presence of the piston rod 14, thereby realizing glue discharge. In the embodiment, the volume of the part of the piston rod 14 entering the metering cylinder 23 is set to be 1 / 2 of the volume of the metering cylinder 23, that is, half. Therefore, it is ensured that the glue discharge amount of the compression stroke and the glue discharge amount of the stretching stroke are the same, and both are half of the total glue amount of the metering cylinder 23.

[0034] In the embodiment, the inlet control valve comprises an inlet valve seat 28, a guide sleeve 27, a limiting steel ball I 30 and an elastic member I 39. The fixed seat 26 has a cavity communicating the rubber material 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 I 30 and the elastic member I 39 are sequentially arranged along the axis from front to back. The limiting steel ball I 30 can be driven to slide along the axis to open or close the rubber material inlet 29. The elastic member I 39 abuts against the limiting steel ball I 30. In the embodiment, the isolation valve comprises an isolation valve seat 22, a limiting 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 which are communicated with each other. The limiting steel ball II 33 and the elastic member II 21 are installed in the valve cavity. The limiting 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 limiting steel ball II 33. The isolation valve seat 22 is further provided with a high-pressure sealing ring 31 for separating the fluids before and after the isolation valve. The working principles of the inlet control valve and the isolation valve in the embodiment are the same. Both of them realize the opening and closing control of the passage by the way of closing the inlet through the steel ball. In the compression stroke, under the double action of the pressure in the front cavity and the elastic force of the elastic member I 39, the limiting steel ball I 30 is pressed against the inlet valve seat 28, thereby cutting off the communication between the rubber material inlet 29 and the front cavity. Meanwhile, in the compression stroke, the rubber material in the front cavity acts on the limiting steel ball II 33. With the compression proceeding, the pressure gradually increases. The rubber material pushes the limiting steel ball II 33 away, the isolation valve is opened, and the rubber material enters the rear cavity. In the extension stroke, the rear cavity is compressed, the pressure in the rear cavity increases, under the double action of the pressure in the rear cavity 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 communication between the front cavity and the rear cavity. A vacuum is generated in the front cavity in the metering cylinder 23. When the force generated by the vacuum is greater than the gravity 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 is opened, the front cavity is communicated with the rubber material inlet 29, the rubber material enters the metering cylinder 23, thereby realizing the one-way feeding and two-way feeding. In the embodiment, the elastic member I 39 and the elastic member II 21 are both springs. The contact positions of the inlet valve seat 28 and the limiting steel ball I 30 and the contact positions of the outlet valve seat and the limiting steel ball II 33 are all provided with inclined surfaces, so that the contact of the inlet valve seat 28 and the limiting steel ball I 30 and the contact of the outlet valve seat and the limiting steel ball II 33 are both tangent, thereby effectively improving the overall sealing performance of the device.

[0035] In the embodiment, the driving assembly further comprises a speed reducer, a bearing seat 9 and a transmission pair, the driving source, the speed reducer, the transmission pair and the piston rod 14 are sequentially connected, the bearing seat 9 is connected to the speed reducer, a plurality of bearings are arranged in the bearing seat 9, and the plurality of bearings are sleeved on the transmission pair to form support and limiting of the transmission pair. In the embodiment, the driving source is a servo motor 1, the speed reducer comprises a speed reducer 2 and a speed 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 with the input shaft of the speed reducer 2, the output shaft of the speed reducer 2 is connected with a shaft coupling 4, the shaft coupling 4 is fixedly connected with the ball nut of the ball screw pair 8, a key groove is arranged in the inner hole of the upper end of the shaft coupling 4, the key groove is matched and connected with the flat key of the output shaft of the speed reducer 2, there is a step in the deep part of the inner hole of the shaft coupling 4, and the step limits the upper limit position of the ball screw. The speed reducer 2 is fixed on the speed reducer seat 3 through screws 10, the speed reducer seat 3 is fixed on the bearing seat 9 through the screws 10, a thrust ball bearing 5 is also arranged in the speed reducer seat 3, the inner ring of the thrust ball bearing is connected with the outer circle of the shaft coupling 4 and is arranged in the speed reducer seat 3, the plurality of bearings arranged in the bearing seat 9 are combined bearings composed of thrust ball bearings 6 and needle bearings 7, the combined bearings are arranged on the outer circle of the ball nut of the ball screw pair 8, one end surface of the combined bearings abuts against the upper end of the bearing seat 9, and the needle bearings 7 are in contact with the combined bearings and are arranged in the inner hole of the bearing seat 9. The end of the screw rod of the ball screw pair 8 is fixedly connected with the piston rod 14 through an open sleeve 11, a sleeve 12 and a snap pin 13, the open sleeve 11 is composed of two pairs of half combinations, the inner circle of the open sleeve 11 is in contact with the screw rod 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 snap pin 13 clamps the upper end of the piston rod 14 to prevent the sleeve 12 from sliding downward. The above is one of the connection modes of the driving assembly in the embodiment, and the driving assembly can also be built by other modes or components, and the transmission is smooth, which can be understood by those skilled in the art, and will not be described here. In the embodiment, the servo motor 1 drives the speed reducer 2 to rotate, the speed reducer 2 drives the shaft coupling 4 to rotate, the shaft coupling 4 drives the nut of the ball screw to rotate, and then drives the screw rod shaft of the ball screw and the piston rod 14 to reciprocate up and down, the rotation speed and angle of the servo motor 1 are controlled to control the moving speed and position of the piston rod 14, and then the precise control of the glue output and the glue output speed is realized.

[0036] The connecting assembly in the embodiment includes a connecting rod 24 and a baffle, the fixed seat 26 and the pump seat 20 are connected by the connecting rod 24 and clamped and fixed to the quantitative cylinder 23; the connecting rod 24 in the embodiment is an internal hexagonal screw, the inlet valve seat 28 and the outlet valve seat are connected by the connecting rod 24, and then the inlet valve seat 28 and the outlet valve seat clamp the quantitative cylinder 23 in the axial direction, so that the inlet valve seat 28, the outlet valve seat and the quantitative cylinder 23 form a detachable whole as shown in the figure. The contact surfaces of the pump seat 20, the fixed seat 26 and the quantitative cylinder 23 are all provided with O-shaped sealing rings 25 as shown in the figure, the O-shaped sealing rings 25 are made of fluorine rubber material and are used for preventing fluid in the quantitative cylinder 23 from leaking.

[0037] In the embodiment, the pump seat 20 is also provided with a connecting seat 16, the two ends of the baffle in the axial direction are connected to the bearing seat 9 and the connecting seat 16 respectively, and the baffle is provided in the circumferential direction. In the embodiment, the baffle has multiple, which are side baffles 15 and front and rear baffles 35, and the bearing seat 9 and the connecting seat 16 are fixedly connected by the left and right side baffles 15 and the two front and rear baffles 35.

[0038] In the embodiment, a guide assembly is also included, the guide assembly includes a guide rod 36, a guide block 38 and a guide seat 17;

[0039] The guide rod 36 is arranged in the axial direction, the two ends of the guide rod 36 in the axial direction are connected to the connecting seat 16 and the bearing seat 9 respectively, the guide block 38 has a fixed part and a guide part, the fixed part of the guide block 38 is installed at the end of the transmission pair, and the guide part of the guide block 38 is slidingly 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 by two screws 10, the linear bearing 37 is fixedly embedded in the guide part as shown in the figure, one end of the guide rod 36 is connected to the bearing seat 9 by screwing, and the other end is arranged in the circular groove on the upper end surface of the connecting seat 16; the guide rod 36 of the guide block 38 has the function of providing guidance to the screw rod, the guide rod 36 can prevent the screw rod of the ball screw from rotating, and when the ball screw reciprocates up and down, the guide block 38 and the linear bearing 37 slide up and down on the guide rod 36.

[0040] 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, and 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 oil injection nozzle 34 in the radial direction. The sliding bearing 18 guides the piston rod 14, and ensures the straightness of the up-and-down movement of the piston rod 14, and the pump seat sealing ring 19 is used to prevent fluid leakage in the inner hole of the lower end of the pump seat 20; the oil injection nozzle 34 is a one-way valve, which can periodically inject lubricating oil and plasticizer into the inner hole of the guide seat 17, lubricate the piston rod 14 and the sliding bearing 18, and at the same time dissolve the internal solidified glue.

[0041] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A glue metering device for a gluing machine, characterized in that: The application relates to a quantitative component, a driving component, an inlet control valve, a fixed seat, a pump seat, an inlet valve seat, a guide sleeve, a limiting steel ball I, an elastic element I, a separating valve seat, a limiting steel ball II, an elastic element II, a reducer, a bearing seat, a connecting component, a guide component, a guide rod, a guide block and a guide seat. The quantitative component comprises a quantitative cylinder, an isolation valve, a rubber material inlet and a rubber material outlet, the rubber material inlet can be controlled to be opened or closed, the isolation valve is single-freedom slidingly arranged in the quantitative cylinder and separates the quantitative cylinder into a front cavity and a rear cavity, the rubber material inlet is communicated with the front cavity, the rubber material outlet is communicated with the rear cavity, the isolation valve is opened or closed along with the sliding of the isolation valve to make the front cavity and the rear cavity be communicated or isolated, and the rubber material inlet is alternately opened. The driving component comprises a driving source, a transmission pair and a piston rod, the piston rod is coaxially arranged with the quantitative cylinder, one end of the piston rod is connected to the driving source through the transmission pair, the other end of the piston rod extends into the quantitative cylinder and is connected with the isolation valve, and the driving source drives the isolation valve to slide through the piston rod.

2. The gum dispensing device for a gum applicator according to claim 1, wherein: 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.

3. The gum dispensing device for a gum applicator according to claim 1, wherein: The application further comprises an inlet control valve arranged at a position between the rubber material inlet and the quantitative cylinder to control the opening and closing of the rubber material inlet, and the inlet control valve and the isolation valve are alternately opened along with the sliding of the isolation valve.

4. The glue quantitatively discharging device for the gluing machine according to claim 3, characterized in that: The quantitative component further comprises a fixed seat and a pump seat, the fixed seat and the pump seat are respectively arranged at the two axial sides of the quantitative cylinder, the rubber material inlet is arranged at the fixed seat and communicated with the front cavity of the quantitative cylinder, and the rubber material outlet is arranged at the pump seat and communicated with the rear cavity of the quantitative cylinder.

5. The glue quantitatively discharging device for the gluing machine according to claim 4, characterized in that: The inlet control valve comprises an inlet valve seat, a guide sleeve, a limiting steel ball I and an elastic element I, the fixed seat has a cavity body along an axis to communicate the rubber material inlet with the quantitative cylinder, the guide sleeve is arranged in the cavity body of the fixed seat, the inlet valve seat, the limiting steel ball I and the elastic element I are sequentially arranged along an axis from front to back, the limiting steel ball I can be driven to slide along an axis to open or close the rubber material inlet, and the elastic element I abuts against the limiting steel ball I.

6. The glue quantitatively discharging device for the gluing machine according to claim 1, characterized in that: The separating valve comprises a separating valve seat, a limiting steel ball II and an elastic element II, the separating valve has a separating valve inlet, a separating valve outlet and a valve cavity which are communicated with each other, the limiting steel ball II and the elastic element II are installed in the valve cavity, the limiting steel ball II can be driven to slide to open or close the separating valve inlet, and the elastic element II abuts against the limiting steel ball II.

7. The glue quantitatively discharging device for the gluing machine according to claim 4, characterized in that: The driving component further comprises a reducer and a bearing seat, the driving source, the reducer, the transmission pair and the piston rod are sequentially connected, the bearing seat is connected to the reducer, a plurality of bearings are arranged in the bearing seat, and the plurality of bearings are sleeved on the transmission pair to form support and limiting for the transmission pair.

8. The glue quantitatively discharging device for the gluing machine according to claim 7, characterized in that: The application further comprises a connecting component, the connecting component comprises a connecting rod and a baffle, the fixed seat and the pump seat are connected through the connecting rod and clamped and fixed to the quantitative cylinder, the pump seat is further provided with a connecting seat, the two axial ends of the baffle are respectively connected to the bearing seat and the connecting seat, and the baffle is circumferentially provided with a plurality of baffles.

9. The glue quantitatively discharging device for the gluing machine according to claim 8, characterized in that: The application further comprises a guide component, the guide component comprises a guide rod, a guide block and a guide seat. The guide rod is arranged in an axial direction, and two axial ends of the guide rod are respectively connected to the connecting seat and the bearing seat; the guide block has a fixed part and a guide part, the fixed part of the guide block is mounted at the end of the transmission pair, and the guide part of the guide block is slidingly arranged on the guide rod; The guide seat is arranged at an axial end of the outlet valve seat, the connecting seat limits the guide seat at the end of the outlet valve seat in the axial direction, and the guide seat is provided with an oil injection nozzle in a radial direction.

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