Quantitative gluing system

Abstract

The utility model discloses a quantitative gluing system, which relates to the technical field of gluing equipment, and particularly comprises a glue inlet valve and a glue outlet valve, a glue outlet valve; the quantitative cylinder is of a plunger structure, an inlet of the quantitative cylinder is communicated with the glue inlet valve, and an outlet of the quantitative cylinder is communicated with the glue outlet valve; a heating assembly and / or a heat conducting assembly for heating the inner cavity are / is arranged in the glue inlet valve, the glue outlet valve and the quantitative cylinder; according to the quantitative gluing system, the heating assembly and / or the heat conduction assembly are / is additionally arranged in the glue inlet valve, the glue outlet valve and the quantitative cylinder, glue is heated in the whole process, the glue temperature is effectively increased, the glue viscosity is effectively reduced, then the pressure of the quantitative system is reduced, the equipment loss is reduced, and the problem that glue is difficult to discharge is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of glue coating equipment, and more specifically to a quantitative glue coating system. Background Art

[0002] Some glues are sensitive to temperature. The lower the temperature, the higher the viscosity, and the higher the temperature, the lower the viscosity. The viscosity of the glue affects the gluing pressure of the gluing equipment. If the viscosity of the glue can be reduced, the requirements of the equipment on the driving part can be reduced, and the pressure of the quantitative system can also be reduced, reducing the loss of the equipment.

[0003] Existing glue coating equipment only heats the glue by heating the glue pipeline. However, the glue flows quickly in the pipeline and has a short residence time. If it only relies on the hot glue pipeline, the glue temperature rises slowly.

[0004] Moreover, when the glue enters the metering cylinder, the metering cylinder itself does not have the ability to heat. After the glue enters, some of the heat is dissipated along the cylinder wall of the metering cylinder, which makes it easy for the glue to drop in temperature, resulting in higher viscosity of the glue and difficulty in discharging the glue.

[0005] In summary, how to provide a quantitative glue coating system that can solve the problems of low glue temperature, high viscosity and difficulty in dispensing glue is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a quantitative glue coating system, which adds heating components and / or heat-conducting components in the glue inlet valve, glue outlet valve and quantitative cylinder to heat the glue throughout the process, effectively increase the glue temperature, reduce the glue viscosity, and thereby reduce the pressure of the quantitative system, reduce equipment loss, and solve the problem of difficult glue discharging.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A quantitative glue coating system, comprising:

[0009] Glue inlet valve;

[0010] Glue discharge valve;

[0011] The metering cylinder is a plunger structure, the inlet of which is connected to the glue inlet valve, and the outlet of which is connected to the glue outlet valve; the glue inlet valve, glue outlet valve and metering cylinder are provided with a heating component and / or a heat-conducting component for heating the inner cavity.

[0012] Preferably, a glue inlet pipe is connected in series to the inlet of the glue inlet valve, and a heating component for heating the medium in the pipe is provided in the glue inlet pipe.

[0013] Preferably, the glue inlet valve includes a first valve body, a valve core, a first piston and a first valve needle;

[0014] The first valve body is provided with a piston cavity and a valve core accommodating cavity along the axis;

[0015] The first piston sliding seal is disposed in the piston cavity;

[0016] The outlet of the valve core is communicated with the metering cylinder;

[0017] The first valve needle is fixedly connected to the first piston and passes through the valve core. When the first piston is at the first stroke end point, the first valve needle blocks the inlet and outlet of the valve core. When the first piston is at the second stroke end point, the inlet and outlet of the valve core are in a conducting state.

[0018] Preferably, the first valve body is an aluminum body, and a first temperature sensor and a first heating unit are provided in the first valve body for monitoring and regulating the temperature of the first valve body and the internal medium.

[0019] Preferably, the glue discharge valve is a one-way valve, and when the pressure in the metering cylinder is greater than a set pressure, the glue discharge valve is opened.

[0020] Preferably, the glue discharging valve comprises a cylinder assembly, a second valve body, a glue discharging nozzle and a second valve needle;

[0021] A second piston is provided in a sliding seal within the cylinder assembly, and the second piston is fixedly connected to the second valve needle;

[0022] The inlet of the second valve body is connected to the outlet of the metering cylinder, and the outlet is connected to the glue outlet nozzle;

[0023] When the second piston is at the first stroke end point, the second valve needle blocks the glue outlet nozzle; when the second piston is at the second stroke end point, the glue outlet nozzle is in a conducting state.

[0024] Preferably, a spring is arranged in the cylinder assembly along the movement direction of the second piston, for pushing the second piston to move toward the first stroke end point.

[0025] Preferably, the outlet of the second valve body is fixedly provided with an elongated body, the end of the elongated body is fixedly provided with a nozzle fixing seat, and the glue nozzle is fixedly connected to the nozzle fixing seat;

[0026] A glue outlet passage communicating with the second valve body and the glue outlet nozzle is provided in the elongated body and the glue nozzle fixing seat, and the second valve needle passes through the glue outlet passage;

[0027] A guide and sealing assembly for sealing and guiding the second valve needle is provided in the second valve body, and a guide sleeve for guiding the second valve needle is provided in the nozzle fixing seat.

[0028] Preferably, the elongated body is an aluminum body, and is internally provided with a second temperature sensor and a second heating unit for monitoring and regulating the temperature of the elongated body and the medium therein.

[0029] Preferably, a plunger is provided in the metering cylinder as a sliding seal, a lead screw is connected to the plunger via a thread, and is used to drive the plunger to slide in the metering cylinder, and a driving part is provided at the end of the lead screw to drive it to rotate;

[0030] The metering cylinder is an aluminum body. A heating component and a third temperature sensor are provided in the metering cylinder. The heating component is used to heat the metering cylinder. The third temperature sensor is used to monitor the temperature of the metering cylinder and the internal medium.

[0031] Compared with the prior art, the quantitative glue coating system provided by the present invention has at least the following beneficial effects:

[0032] By integrating heating components or heat-conducting components in the glue inlet valve, glue outlet valve and metering cylinder, the glue can be continuously heated in the glue inlet valve, glue outlet valve or metering cylinder to ensure that the temperature of the glue is high, which helps to reduce the viscosity of the glue, facilitates the discharge of the glue, reduces equipment loss, and solves the problem of difficulty in glue discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] Figure 1 This is a schematic structural diagram of a specific quantitative glue coating system provided by the present utility model;

[0035] Figure 2 This is a cross-sectional view of a specific quantitative glue coating system provided by the utility model;

[0036] Figure 3 This is a schematic diagram of the structure of the specific glue inlet valve provided by the utility model;

[0037] Figure 4 This is a schematic structural diagram of a specific glue discharging valve provided by the utility model.

[0038] Figure 1-Figure 4 middle:

[0039] 1. Glue inlet valve; 101. Valve core; 102. First valve body; 103. First piston; 104. First valve needle; 2. Dosing cylinder; 201. Plunger; 3. Glue outlet valve; 301. End cover; 302. Housing; 303. Second piston; 304. Spring; 305. Guide and sealing assembly; 306. Guide sleeve; 307. Second valve body; 308. Extension body; 309. Second valve needle; 310. Glue nozzle fixing seat; 311. Glue outlet nozzle; 4. Drive unit; 5. Glue inlet hose; 6. Screw. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] The core of this utility model is to provide a quantitative glue coating system, which adds heating components and / or heat-conducting components in the glue inlet valve, glue outlet valve and quantitative cylinder to heat the glue throughout the process, effectively increase the glue temperature, reduce the glue viscosity, and thus reduce the pressure of the quantitative system, reduce equipment loss, and solve the problem of difficult glue discharging.

[0042] Please refer to Figure 1-Figure 4 , a quantitative glue coating system, comprising:

[0043] Glue inlet valve 1;

[0044] Glue discharge valve 3;

[0045] The metering cylinder 2 is a plunger structure, the inlet of which is connected to the glue inlet valve 1, and the outlet of which is connected to the glue outlet valve 3; the glue inlet valve 1, the glue outlet valve 3 and the metering cylinder 2 are provided with a heating component and / or a heat conducting component for heating the inner cavity;

[0046] In actual use, glue enters the metering cylinder 2 through the glue inlet valve 1. When the glue amount in the metering cylinder 2 reaches the set value, the glue inlet valve 1 is closed. At this time, the plunger in the metering cylinder 2 moves to increase the pressure in the metering cylinder 2, and the glue outlet valve 3 is turned on, and the glue is discharged through the glue outlet valve 3.

[0047] In some embodiments, a heating component is added to the glue inlet valve 1 or the glue outlet valve 3 to heat the glue, thereby increasing the glue temperature in the valve body, thereby reducing the viscosity of the glue in the valve body and reducing the resistance of the glue when passing through the glue inlet valve 1 and the glue outlet valve 3, so that the glue can pass through the glue inlet valve 1 and the glue outlet valve 3 quickly;

[0048] In some embodiments, a heating component is added to the metering cylinder 2 to heat the glue in the metering cylinder 2 to reduce its viscosity. Combined with the hot glue entering the glue pipe 5, the glue temperature is continuously maintained at a higher temperature, thereby avoiding the increase in its viscosity and the problem of difficulty in glue discharge.

[0049] In some embodiments, a heating component is provided in one of the components of the glue inlet valve 1, the metering cylinder 2, and the glue outlet valve 3, and a heat-conducting component is added to the remaining two components, thereby achieving a synchronous increase in the glue temperature of the three components, achieving full heating of the glue, ensuring that the glue is always in a low viscosity state, and facilitating rapid glue discharge;

[0050] At the same time, the metering cylinder 2 adopts a plunger structure. When the internal pressure decreases, the glue inlet valve 1 is turned on to enable glue inlet. When the internal pressure increases, the glue outlet valve 3 is turned on to enable glue discharge, thereby achieving the first-in-first-out principle of glue and avoiding glue aging caused by glue staying in the equipment for a long time.

[0051] In some embodiments, as Figure 1 As shown, a glue inlet pipe 5 is connected in series to the inlet of the glue inlet valve 1, and a heating component for heating the medium in the pipe is provided in the glue inlet pipe 5;

[0052] By setting a heating component in the glue inlet pipe 5, the glue entering the device is preliminarily heated so that it has a certain initial temperature, which helps it flow quickly in the glue inlet pipe 5 and has less flow resistance when passing through the glue inlet valve 1.

[0053] In some embodiments, as Figure 3 As shown, the glue inlet valve 1 includes a first valve body 102, a valve core 101, a first piston 103 and a first valve needle 104;

[0054] The first valve body 102 is provided with a piston cavity and a valve core accommodating cavity along the axis;

[0055] The first piston 103 is slidingly and sealingly disposed in the piston cavity;

[0056] The outlet of the valve core 101 is connected to the metering cylinder 2;

[0057] The first valve needle 104 is fixedly connected to the first piston 103 and penetrates the valve core 101. When the first piston 103 is at the first stroke end point, the first valve needle 104 blocks the inlet and outlet of the valve core 101. When the first piston 103 is at the second stroke end point, the inlet and outlet of the valve core 101 are in a conducting state.

[0058] The glue feed valve 1 adopts pneumatic drive to switch on and off. Specifically, high-pressure gas is connected to both ends of the piston cavity. By controlling the conduction of the high-pressure gas at both ends, the movement of the first piston 103 in the piston cavity is controlled. When glue feeding is required, the first piston 103 is moved to the second stroke end point, so that the inlet and outlet of the valve core 101 are connected, and then the glue in the glue feed pipe 5 can enter the metering cylinder 2 through the valve core 101, even if the glue feed valve 1 is in the conducting state; when glue feeding is not required, the high-pressure gas acts to move the first piston 103 to the first stroke end point, so that the first valve needle 104 blocks the inlet and outlet of the valve core 101, even if the glue feed valve 1 is in the cut-off state.

[0059] In some embodiments, the first valve body 102 is an aluminum body, and a first temperature sensor and a first heating unit are provided in the first valve body 102 for monitoring and regulating the temperature of the first valve body 102 and the internal medium;

[0060] The first valve body 102, which is made of aluminum, has good thermal conductivity. When the temperature of the glue inlet pipe 5 or the metering cylinder 2 is high, it can absorb the heat from the high temperature area to heat the glue in the glue inlet valve 1, or directly use the first heating unit to heat it, thereby reducing the viscosity of the glue in the glue inlet valve 1 and reducing the flow resistance of the glue;

[0061] At the same time, a first temperature sensor is added to monitor the temperature of the first valve body 102 and the internal medium. When the temperature is lower than the set temperature, the power of the heating component in the device is increased. When the temperature is higher than the set temperature, the power of the heating component in the device is reduced to slow down the temperature increase of the glue or maintain a constant temperature.

[0062] In some embodiments, the dispensing valve 3 is a one-way valve. When the pressure in the metering cylinder 2 is greater than the set pressure, the dispensing valve 3 is opened.

[0063] The glue discharge valve 3 adopts a one-way valve structure design. When the pressure in the metering cylinder 2 reaches the set value, the glue discharge valve 3 is turned on and the glue is discharged. When the metering cylinder 2 is feeding glue, the glue discharge valve 3 is in the cut-off state, which effectively prevents glue from flowing back.

[0064] In some embodiments, as Figure 4 As shown, the glue discharging valve 3 includes a cylinder assembly, a second valve body 307 , a glue discharging nozzle 311 and a second valve needle 309 ;

[0065] A second piston 303 is provided in a sliding seal within the cylinder assembly, and the second piston 303 is fixedly connected to the second valve needle 309;

[0066] The inlet of the second valve body 307 is connected to the outlet of the metering cylinder 2, and the outlet is connected to the glue outlet nozzle 311;

[0067] When the second piston 303 is at the first stroke end point, the second valve needle 309 blocks the glue outlet nozzle 311. When the second piston 303 is at the second stroke end point, the glue outlet nozzle 311 is in a conducting state.

[0068] The glue discharge valve 3 is pneumatically controlled to be on and off, specifically, it is composed of a cylinder assembly consisting of a shell 302 and an end cover 301, wherein the shell 302 is fixedly connected to the second valve body 307, and high-pressure gas is connected to both ends of the shell 302. Through the action of the high-pressure gas, the second piston 303 is driven to move, thereby controlling the second valve needle 309 to control the sealing of the glue discharge nozzle 311.

[0069] In some embodiments, a spring 304 is arranged in the cylinder assembly along the movement direction of the second piston 303 to push the second piston 303 to move toward the first stroke endpoint;

[0070] like Figure 4 As shown, by adding a spring 304, the second piston 303 is at the first stroke end when not acted upon by an external force. At this time, the second valve needle 309 is at a position to block the glue outlet nozzle 311, that is, the glue outlet valve 3 is in a normally closed state.

[0071] In some embodiments, as Figure 4 As shown, the outlet of the second valve body 307 is fixedly provided with an extension body 308, the end of the extension body 308 is fixedly provided with a nozzle fixing seat 310, and the nozzle 311 is fixedly connected to the nozzle fixing seat 310;

[0072] A glue outlet passage connecting the second valve body 307 and the glue outlet nozzle 311 is provided in the elongated body 308 and the glue nozzle fixing seat 310, and the second valve needle 309 passes through the glue outlet passage;

[0073] A guide and sealing assembly 305 for sealing and guiding the second valve needle 309 is provided in the second valve body 307, and a guide sleeve 306 for guiding the second valve needle 309 is provided in the nozzle fixing seat 310;

[0074] By adding the extension body 308, the length of the glue valve 3 is extended, which is suitable for glue injection of narrow workpieces, and the second valve needle 309 inside is preferably made of tungsten steel, which has high hardness and wear resistance;

[0075] At the same time, a guide and sealing assembly 305 and a guide sleeve 306 are added to guide the second valve needle 309 to ensure the linearity of its movement.

[0076] In some embodiments, the elongated body 308 is an aluminum body, and is internally provided with a second temperature sensor and a second heating unit for monitoring and regulating the temperature of the second valve body 307 and the internal medium;

[0077] The second valve body 307 and / or the extended body 308 are made of aluminum and have good thermal conductivity. They can transfer heat from surrounding high-temperature objects to themselves, thereby heating the internal glue, or a second heating unit is integrated in the second valve body 307 and / or the extended body 308 to directly heat the glue in the glue discharge valve 3, and the temperature is monitored by a second temperature sensor to achieve the function of automatic temperature control.

[0078] In some embodiments, a plunger 201 is provided in a sliding seal within the metering cylinder 2, and a lead screw 6 is connected to the plunger 201 via a thread to drive the plunger 201 to slide within the metering cylinder 2. A driving portion 4 is provided at the end of the lead screw 6 to drive it to rotate;

[0079] The dosing cylinder 2 is made of aluminum. A heating component and a third temperature sensor are provided inside the dosing cylinder 2. The heating component is used to heat the dosing cylinder 2. The third temperature sensor is used to monitor the temperature of the dosing cylinder 2 and the internal medium.

[0080] The metering cylinder 2 adopts a plunger structure, and the glue inlet and glue outlet are located at both ends, that is, the glue is first in, first out, and the aging problem caused by long-term storage of glue in the metering cylinder 2 is avoided;

[0081] At the same time, the plunger 201 in the metering cylinder 2 is driven by the screw 6. By controlling the number of rotations of the screw 6, the feed amount of the plunger 201 can be controlled, and the discharge amount of the glue can be accurately controlled. In the actual design, a combination of a servo motor and a reducer is used as the driving part 4 to drive the screw 6. The rotation angle and number of rotations of the screw 6 can be accurately controlled, that is, the discharge amount of the glue can be accurately controlled.

[0082] At the same time, the metering cylinder 2 adopts an aluminum body with an integrated heating component to heat it and the glue inside it. Combined with the aluminum bodies of the glue inlet valve 1 and the glue outlet valve 3, the heat in the metering cylinder 2 is quickly transferred to the glue inlet valve 1 and the glue outlet valve 3, thereby achieving full heating of the glue, avoiding the increase in viscosity caused by the decrease in its temperature, and thus avoiding the problem of difficulty in glue discharge;

[0083] During the design, a control box is set up inside the equipment, and the control units of all heating components are integrated into the control box to facilitate maintenance and control of the equipment.

[0084] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0085] The above is a detailed introduction to the quantitative glue coating system provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, various improvements and modifications can be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A quantitative glue coating system, characterized in that: include: Glue inlet valve (1); Glue discharge valve (3); The metering cylinder (2) is a plunger structure, the inlet of which is connected to the glue inlet valve (1), and the outlet of which is connected to the glue outlet valve (3); the glue inlet valve (1), the glue outlet valve (3) and the metering cylinder (2) are provided with a heating component and / or a heat-conducting component for heating the inner cavity.

2. The quantitative glue coating system according to claim 1, characterized in that: A glue inlet pipe (5) is connected in series to the inlet of the glue inlet valve (1), and a heating component for heating the medium in the pipe is provided in the glue inlet pipe (5).

3. The quantitative glue coating system according to claim 1, characterized in that: The glue inlet valve (1) comprises a first valve body (102), a valve core (101), a first piston (103) and a first valve needle (104); The first valve body (102) is provided with a piston cavity and a valve core accommodating cavity along the axis; The first piston (103) is slidingly sealed and disposed in the piston cavity; The outlet of the valve core (101) is in communication with the metering cylinder (2); The first valve needle (104) is fixedly connected to the first piston (103), and the first valve needle (104) passes through the valve core (101). When the first piston (103) is at a first stroke end point, the first valve needle (104) blocks the inlet and outlet of the valve core (101). When the first piston (103) is at a second stroke end point, the inlet and outlet of the valve core (101) are in a conducting state.

4. The quantitative glue coating system according to claim 3, characterized in that: The first valve body (102) is an aluminum body, and a first temperature sensor and a first heating unit are provided in the first valve body (102) for monitoring and regulating the temperature of the first valve body (102) and the internal medium.

5. The quantitative glue coating system according to claim 1, characterized in that: The glue discharge valve (3) is a one-way valve, and when the pressure in the metering cylinder (2) is greater than a set pressure, the glue discharge valve (3) is opened.

6. The quantitative glue coating system according to claim 1, characterized in that: The glue discharging valve (3) comprises a cylinder assembly, a second valve body (307), a glue discharging nozzle (311) and a second valve needle (309); A second piston (303) is provided in a sliding seal within the cylinder assembly, and the second piston (303) is fixedly connected to the second valve needle (309); The inlet of the second valve body (307) is communicated with the outlet of the metering cylinder (2), and the outlet is communicated with the glue outlet nozzle (311); When the second piston (303) is at the first stroke end point, the second valve needle (309) blocks the glue outlet nozzle (311); when the second piston (303) is at the second stroke end point, the glue outlet nozzle (311) is in a conducting state.

7. The quantitative glue coating system according to claim 6, characterized in that: A spring (304) is arranged in the cylinder assembly along the movement direction of the second piston (303) for pushing the second piston (303) to move toward the first stroke end point.

8. The quantitative glue coating system according to claim 6, characterized in that: The outlet of the second valve body (307) is fixedly provided with an extension body (308), the end of the extension body (308) is fixedly provided with a nozzle fixing seat (310), and the nozzle (311) is fixedly connected to the nozzle fixing seat (310); A glue outlet channel communicating with the second valve body (307) and the glue outlet nozzle (311) is provided in the elongated body (308) and the glue nozzle fixing seat (310), and the second valve needle (309) passes through the glue outlet channel; A guide and sealing assembly (305) for sealing and guiding the second valve needle (309) is provided in the second valve body (307), and a guide sleeve (306) for guiding the second valve needle (309) is provided in the nozzle fixing seat (310).

9. The quantitative glue coating system according to claim 8, characterized in that: The elongated body (308) is an aluminum main body, and is internally provided with a second temperature sensor and a second heating unit for monitoring and regulating the temperature of the elongated body (308) and the medium therein.

10. The quantitative glue coating system according to any one of claims 1 to 9, characterized in that: A plunger (201) is provided in a sliding seal within the metering cylinder (2), a lead screw (6) is connected to the plunger (201) via a thread, and is used to drive the plunger (201) to slide within the metering cylinder (2), and a driving portion (4) is provided at the end of the lead screw (6) for driving the lead screw (6) to rotate; The metering cylinder (2) is an aluminum body. A heating component and a third temperature sensor are provided in the metering cylinder (2). The heating component is used to heat the metering cylinder (2), and the third temperature sensor is used to monitor the temperature of the metering cylinder (2) and the internal medium.

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