Dispensing device

Abstract

The invention discloses an adhesive dispensing device which comprises a first shell with a first adhesive pressing cavity. The first glue pipe is provided with a glue containing cavity, a lower glue outlet and an upper glue outlet which are communicated with the glue containing cavity are formed in the first glue pipe, the upper glue outlet is formed in the side wall of the first glue pipe, the lower glue outlet is formed in the bottom of the first glue pipe, and the lower glue outlet is communicated with the first glue pressing cavity; a glue inlet of the first glue dispensing head is communicated with the first glue pressing chamber; the first glue injection channel is used for communicating the upper glue outlet with the first glue pressing chamber; and the suction or thrust generation assembly is arranged on the first shell, and the suction or thrust generation assembly is used for injecting the fluorescent glue into the first glue pressing cavity from the upper glue outlet and the lower glue outlet when the suction or thrust generation assembly generates the suction and is also used for dispensing the fluorescent glue in the first glue pressing cavity to the outside from the first dispensing head when the thrust is generated. According to the dispensing device, the concentration difference of dispensed fluorescent glue is reduced when the fluorescent glue in the glue containing cavity is precipitated, so that the dispensing yield is increased.

Description

Technical Field

[0001] The invention relates to the technical field of LED packaging, and in particular to a glue dispensing device. Background Art

[0002] The glue dispensing method of the glue dispensing device used in the LED (Light Emitting Diode) lamp bead packaging is to achieve glue dispensing by cavity pressing, such as Figure 2 As shown, it is a structural diagram of a traditional glue dispensing device, which includes a second push rod 903, a second shell 902 provided with a second glue pressing chamber 904, a second glue dispensing head 905 and a second glue hose 901, wherein the second push rod 903 is arranged on the second shell 902 and one end of the second push rod 903 extends into the second glue pressing chamber 904, the second glue hose 901 is arranged on one side of the second shell 902, and the second glue hose 901 is connected to the second glue pressing chamber 904 through a second glue injection channel 906, wherein the second glue hose 901 and the second glue pressing chamber 904 are both placed vertically.

[0003] Although the glue dispensing device is capable of performing glue dispensing operations, since the second glue tube 901 and the second glue pressing chamber 904 are both placed vertically, the glue dispensing device will stay for a long time without dispensing glue, which will cause precipitation in the second glue tube 901. The second glue tube 901 will have a low concentration of fluorescent glue in the upper part and a low concentration of fluorescent glue in the lower part, resulting in a poor glue dispensing yield.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a glue dispensing device to solve the problem that in the traditional glue dispensing device in the prior art, the fluorescent glue stays for a long time without being dispensed, which will cause precipitation in the second glue tube and the second glue pressing chamber, and the second glue tube and the second glue pressing chamber both have low fluorescent glue concentration in the upper part and low fluorescent glue concentration in the lower part, resulting in poor glue dispensing yield.

[0006] The technical solution adopted by the present invention to solve the technical problem is: to provide a dispensing device, comprising:

[0007] A first housing having a first glue pressing chamber;

[0008] A first rubber tube having a glue holding chamber, the glue holding chamber being used to hold fluorescent glue, the first rubber tube being provided with a lower glue outlet and an upper glue outlet communicating with the glue holding chamber, the upper glue outlet being provided on a side wall of the first rubber tube, the lower glue outlet being provided at the bottom of the first rubber tube, and the lower glue outlet being communicated with the first glue pressing chamber;

[0009] A first glue dispensing head, used for dispensing glue to the outside, wherein a glue inlet of the first glue dispensing head is connected to the first glue pressing chamber;

[0010] A first glue injection channel, used for connecting the upper glue outlet with the first glue pressing chamber;

[0011] A suction or thrust generating component is disposed on the first shell, and is used to inject the fluorescent glue from the upper glue outlet and the lower glue outlet into the first glue pressing chamber when generating suction, and is also used to dispense the fluorescent glue in the first glue pressing chamber from the first glue dispensing head to the outside when generating thrust;

[0012] Wherein, when the fluorescent glue in the glue holding chamber is dispensed after being precipitated, the fluorescent glue with low concentration flows out from the upper glue outlet, and the fluorescent glue with high concentration flows out from the lower glue outlet.

[0013] According to a further configuration of the present invention, when the suction or thrust generating component generates thrust, the fluorescent glue in the first glue pressing chamber moves along a first direction, and the first direction is a direction perpendicular to the direction of gravity.

[0014] In a further configuration of the present invention, the first hose is vertically arranged with respect to the first shell, the first hose is located above the first shell, and the first hose is vertically arranged;

[0015] The glue outlet of the first glue injection channel is located at the bottom of the first glue pressing chamber, the glue outlet of the first glue injection channel is located below the lower glue outlet, and the glue outlet of the first glue injection channel is arranged opposite to the lower glue outlet.

[0016] A further configuration of the present invention is that a first valve body is provided in the communication passage between the glue outlet of the first glue dispensing head and the first glue pressing chamber, when the first valve body is opened, the glue outlet of the first glue dispensing head is communicated with the first glue pressing chamber, and when the first valve body is closed, the first valve body blocks the communication passage between the glue outlet of the first glue dispensing head and the first glue pressing chamber.

[0017] A further configuration of the present invention is that the first valve body includes a first check valve, and the first check valve is arranged in a communication channel between the glue outlet of the first dispensing head and the first glue pressing chamber. When the first check valve is opened, the glue outlet of the first dispensing head is communicated with the first glue pressing chamber. When the first check valve is closed, the first check valve blocks the communication channel between the glue outlet of the first dispensing head and the first glue pressing chamber.

[0018] According to a further configuration of the present invention, a second valve body is provided in the connection passage between the lower glue outlet and the glue containing chamber, and when the second valve body is opened, the lower glue outlet is communicated with the glue containing chamber, and when the second valve body is closed, the second valve body blocks the connection passage between the lower glue outlet and the glue containing chamber;

[0019] A third valve body is provided in the first glue injection channel. When the third valve body is opened, the glue inlet of the first glue injection channel is connected with the glue outlet of the first glue injection channel. When the third valve body is closed, the third valve body blocks the connection channel between the glue inlet of the first glue injection channel and the glue outlet of the first glue injection channel.

[0020] A further configuration of the present invention is that the second valve body includes a second check valve, and the second check valve is arranged in a connecting passage between the lower glue outlet and the glue containing chamber. When the second check valve is opened, the lower glue outlet is connected to the glue containing chamber. When the second check valve is closed, the second valve body blocks the connecting passage between the lower glue outlet and the glue containing chamber.

[0021] According to a further configuration of the present invention, the third valve body includes a third check valve, and the third check valve is arranged in the first glue injection channel. When the third check valve is opened, the glue inlet of the first glue injection channel is connected with the glue outlet of the first glue injection channel. When the third check valve is closed, the third check valve blocks the connection channel between the glue inlet of the first glue injection channel and the glue outlet of the first glue injection channel.

[0022] According to a further configuration of the present invention, the suction or thrust generating assembly includes: a first push rod, which is movably arranged on the first shell, one end of the first push rod passes through the first shell and extends into the first glue pressing chamber, the other end of the first push rod is located outside the first shell, and the circumferential seal of the first push rod abuts against the cavity wall of the first glue pressing chamber.

[0023] A further configuration of the present invention further includes:

[0024] The liquid level detection sensor is used to detect the liquid level of the fluorescent glue in the glue containing chamber, and the liquid level detection sensor is arranged in the glue containing chamber.

[0025] The beneficial effects of the present invention are:

[0026] The present invention provides a glue dispensing device, comprising: a first shell having a first glue pressing chamber; a first glue tube having a glue containing chamber, the glue containing chamber being used to place fluorescent glue, the first glue tube being provided with a lower glue outlet and an upper glue outlet connected to the glue containing chamber, the upper glue outlet being provided on the side wall of the first glue tube, the lower glue outlet being provided at the bottom of the first glue tube, the lower glue outlet being connected to the first glue pressing chamber; a first glue dispensing head being used to dispense glue to the outside, the glue inlet of the first glue dispensing head being connected to the first glue pressing chamber; a first injection A glue channel is used to connect the upper glue outlet and the first glue pressing chamber; a suction or thrust generating component is arranged on the first shell, and the suction or thrust generating component is used to inject the fluorescent glue from the upper glue outlet and the lower glue outlet into the first glue pressing chamber when suction is generated, and is also used to make the fluorescent glue in the first glue pressing chamber be dispensed to the outside from the first glue dispensing head when thrust is generated; wherein, when the fluorescent glue in the glue containing chamber is dispensed after precipitation, the fluorescent glue with low concentration flows out from the upper glue outlet, and the fluorescent glue with high concentration flows out from the lower glue outlet. According to the technical solution of the present invention, during glue injection, suction is generated by a suction or thrust generating component, so that the fluorescent glue is injected into the first glue pressing chamber from the upper glue outlet and the lower glue outlet. When the fluorescent glue is precipitated, the upper glue outlet flows out fluorescent glue with low concentration, and the lower glue outlet flows out fluorescent glue with high concentration, so that the high-concentration fluorescent glue and the low-concentration fluorescent glue are mixed in the first glue pressing chamber. After that, the suction or thrust generating component generates thrust and dispenses the mixed fluorescent glue outward through the first glue dispensing head. It can be seen that the concentration difference of the fluorescent glue dispensed by the glue dispensing device when the fluorescent glue in the glue holding chamber is precipitated is reduced, so that the yield rate of glue dispensing is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 It is a cross-sectional view of the structural diagram of the glue dispensing device in the present invention.

[0029] Figure 2 It is a cross-sectional view of the structure diagram of a traditional dispensing device.

[0030] The marks in the accompanying drawings are: 10, first shell; 101, first glue pressing chamber; 102, second notch; 103, third notch; 20, first rubber hose; 201, glue containing chamber; 2011, upper glue outlet; 2012, lower glue outlet; 30, first glue dispensing head; 301, third horizontal channel; 302, third vertical channel; 303, first notch; 40, first glue injection channel; 401, first horizontal channel; 402, first vertical channel; 403, second horizontal channel; 404, second vertical channel; 50, suction or thrust generating component; 501, first push rod; 60, first valve body; 70, second valve body; 80, third valve body; 901, second rubber hose; 902, second shell; 903, second push rod; 904, second glue pressing chamber; 905, second glue dispensing head; 906, second glue injection channel. DETAILED DESCRIPTION

[0031] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0032] like Figure 1 As shown, a glue dispensing device provided by the present invention may include a first shell 10 with a first glue pressing chamber 101, a first glue tube 20 with a glue containing chamber 201, a first glue dispensing head 30, a first glue injection channel 40 and a suction or thrust generating component 50.

[0033] The glue holding chamber 201 is used to place fluorescent glue, and the first glue tube 20 is provided with a lower glue outlet 2012 and an upper glue outlet 2011 which are connected to the glue holding chamber 201. The upper glue outlet 2011 is arranged on the side wall of the first glue tube 20, and the lower glue outlet 2012 is arranged at the bottom of the first glue tube 20. The lower glue outlet 2012 is connected to the first glue pressing chamber 101; the first glue dispensing head 30 is used to dispense glue to the outside, and the glue inlet of the first glue dispensing head 30 is connected to the first glue pressing chamber 101; the first glue injection channel 40 is used to connect the upper glue outlet 2011 with the first glue pressing chamber 101. Glue chamber 101; suction or thrust generating component 50 is arranged on the first shell 10, and the suction or thrust generating component 50 is used to inject the fluorescent glue from the upper glue outlet 2011 and the lower glue outlet 2012 into the first glue pressing chamber 101 when suction is generated. The suction or thrust generating component 50 is also used to make the fluorescent glue in the first glue pressing chamber 101 be dispensed to the outside from the first glue dispensing head 30 when thrust is generated; wherein, when the fluorescent glue in the glue chamber 201 is dispensed after precipitation, the fluorescent glue with low concentration flows out from the upper glue outlet, and the fluorescent glue with high concentration flows out from the lower glue outlet.

[0034] Specifically, the first rubber hose 20 can be a cylindrical rubber hose. The glue-containing chamber 201 in the first rubber hose 20 can also be a cylindrical chamber. When the glue-containing chamber 201 is specifically set, the specific volume of the glue-containing chamber 201 can be determined according to actual conditions, wherein when dispensing glue, the cylindrical chamber is filled with fluorescent glue. The first shell 10 can be a cylindrical shell. The first glue pressing chamber 101 in the first shell 10 can also be a cylindrical glue pressing chamber. When the first glue pressing chamber 101 is specifically set, the specific volume of the first glue pressing chamber 101 can be determined according to actual conditions, wherein when the suction or thrust generating component 50 generates suction, suction is generated in the first glue pressing chamber 101, and when the suction or thrust generating component 50 generates thrust, an outward thrust is generated in the first glue pressing chamber 101, so that the fluorescent glue in the first glue pressing chamber 101 is dispensed from the first glue dispensing head 30.

[0035] During the specific glue dispensing, suction is generated by the suction or thrust generating component 50, and the fluorescent glue in the glue holding chamber 201 is injected into the first glue pressing chamber 101 from the upper glue outlet 2011 and the lower glue outlet 2012. When the fluorescent glue precipitates, the fluorescent glue is layered in the glue holding chamber 201, with the upper layer being fluorescent glue with low concentration and the lower layer being fluorescent glue with high concentration. When the fluorescent glue precipitates, the fluorescent glue with low concentration flows out of the upper glue outlet and the fluorescent glue with high concentration flows out of the lower glue outlet, so that the fluorescent glue injected into the first glue pressing chamber 101 through the upper glue outlet 2011 is mixed with the fluorescent glue injected into the first glue pressing chamber 101 through the lower glue outlet 2012. Thereafter, thrust is generated by the suction or thrust generating component 50, and the mixed fluorescent glue in the first glue pressing chamber 101 is dispensed outward through the glue outlet.

[0036] Among them, when the fluorescent glue precipitates in the glue holding chamber 201, the concentration of the fluorescent glue injected into the first glue pressing chamber 101 through the upper glue outlet 2011 is low (i.e., low-concentration fluorescent glue), and the concentration of the fluorescent glue injected into the first glue pressing chamber 101 through the lower glue outlet 2012 is high (i.e., high-concentration fluorescent glue), and the low-concentration fluorescent glue and the high-concentration fluorescent glue are mixed in the first glue pressing chamber 101.

[0037] It can be seen that when the fluorescent glue in the glue containing chamber 201 is precipitated, the concentration difference of the fluorescent glue dispensed by the glue dispensing device is reduced, so that the yield rate of glue dispensing is improved.

[0038] It should be noted that when the upper glue outlet 2011 is set, under the condition that the above requirements are met (that is, after the fluorescent glue in the glue containing chamber 201 is precipitated, the fluorescent glue with low concentration can flow out from the upper glue outlet into the first glue pressing chamber 101 under the action of the suction generated by the suction or thrust generating component 50 during glue dispensing), technical personnel in this field can open the specific position of the upper glue outlet 2011 according to actual conditions.

[0039] In a specific embodiment, the lower glue outlet 2012 is disposed at the bottom of the first rubber tube 20 , and the upper glue outlet 2011 is disposed at a position half the height of the first rubber tube 20 .

[0040] When the dispensing device is used, there may be fluorescent glue in the first glue pressing chamber 101 that has not been completely dispensed. After the dispensing device is placed for a period of time, the fluorescent glue that has not been completely dispensed in the first glue pressing chamber 101 will precipitate. In order to solve the problem that the concentration difference of the dispensed fluorescent glue caused by the precipitation in the first glue pressing chamber 101 affects the dispensing yield, as shown in FIG. Figure 1 As shown, when the first glue pressing chamber 101 is set and the suction or thrust generating assembly 50 generates thrust, the fluorescent glue in the first glue pressing chamber 101 flows in a direction perpendicular to gravity (ie, the first direction).

[0041] Since the fluorescent glue in the first glue pressing chamber 101 flows in a direction perpendicular to gravity when the suction or thrust generating component 50 generates thrust, the fluorescent glue dispensed by the first glue dispensing head 30 includes both high-concentration fluorescent glue and low-concentration fluorescent glue, thereby reducing the concentration difference of the fluorescent glue dispensed by the first glue dispensing head 30 and further improving the yield.

[0042] In some embodiments, Figure 1 As shown, when the first glue hose 20 and the first shell 10 are set, the first glue hose 20 and the first shell 10 are set vertically, the first glue hose 20 is located above the first shell 10, and the first glue hose 20 is set vertically; the glue outlet of the first glue injection channel 40 is located at the bottom of the first glue pressing chamber 101, the glue outlet of the first glue injection channel 40 is located below the lower glue outlet 2012, and the glue outlet of the first glue injection channel 40 is arranged opposite to the lower glue outlet 2012.

[0043] Specifically, the first shell 10 is horizontally arranged, the first glue dispensing head 30 is arranged at one end of the first shell 10, and the glue outlet of the first glue dispensing head 30 is arranged downward, the suction or thrust generating component 50 is arranged at the other end of the first shell 10, and can generate suction or thrust in the first glue pressing chamber 101.

[0044] When the first rubber hose 20 is installed, the first rubber hose 20 is vertically installed on the first housing 10 and close to one end of the first dispensing head 30 , and the lower glue outlet 2012 of the first rubber hose 20 is connected to the first glue pressing chamber 101 .

[0045] When the upper glue outlet 2011 is connected to the first glue pressing chamber 101 , the glue inlet of the first glue injection channel 40 is connected to the upper glue outlet 2011 , and the glue outlet of the first glue injection channel 40 is connected to the first glue pressing chamber 101 .

[0046] Specifically, the first glue injection channel 40 may include a first horizontal channel 401, a first vertical channel 402, a second horizontal channel 403 and a second vertical channel 404, one end of the first horizontal channel 401 is connected to one end of the first vertical channel 402, the other end of the first vertical channel 402 is connected to one end of the second horizontal channel 403, the other end of the second horizontal channel 403 is connected to one end of the second vertical channel 404, the other end of the second vertical channel 404 is connected to the first glue pressing chamber 101, and the other end of the second vertical channel 404 is located at the bottom of the first glue pressing chamber 101, and is arranged opposite to the lower glue outlet 2012.

[0047] It should be noted that the other end of the second vertical channel 404 is the glue outlet of the first glue injection channel 40 , and the other end of the first horizontal channel 401 is the glue inlet of the first glue injection channel 40 .

[0048] When the suction or thrust generating component 50 generates suction, the lower glue outlet 2012 will flow out the fluorescent glue into the first glue pressing chamber 101. At the same time, the upper glue outlet 2011 will flow out the fluorescent glue into the first glue pressing chamber 101 through the first horizontal channel 401, the first vertical channel 402, the second horizontal channel 403 and the second vertical channel 404. Since the upper glue outlet 2011 and the glue outlet of the first glue injection channel 40 are arranged opposite to each other, and the glue outlet of the first glue injection channel 40 is located below the upper glue outlet 2011, the fluorescent glue in the upper glue outlet 2011 and the fluorescent glue in the first glue injection channel 40 can be better mixed, thereby further reducing the concentration difference of the fluorescent glue, that is, further improving the glue dispensing yield.

[0049] In some embodiments, Figure 1As shown, a first valve body 60 is provided in the communication channel between the glue outlet of the first glue dispensing head 30 and the first glue pressing chamber 101. When the first valve body 60 is opened, the glue outlet of the first glue dispensing head 30 is connected with the first glue pressing chamber 101. When the first valve body 60 is closed, the first valve body 60 blocks the communication channel between the glue outlet of the first glue dispensing head 30 and the first glue pressing chamber 101.

[0050] Specifically, the first dispensing head 30 may include a third horizontal channel 301 and a third vertical channel 302, one end of the third horizontal channel 301 is connected to the first glue pressing chamber 101, the other end of the third horizontal channel 301 is connected to one end of the third vertical channel 302, and the other end of the third vertical channel 302 is the glue outlet of the first dispensing head 30.

[0051] When the first valve body 60 is provided, it can be provided in the third vertical channel 302 or in the third horizontal channel 301. In a specific embodiment, the first valve body 60 is provided in the third vertical channel 302.

[0052] In specific applications, when the fluorescent glue is sucked into the first glue pressing chamber 101 through the suction or thrust generating component 50, the first valve body 60 can be closed. At this time, the connecting channel between the first glue pressing chamber 101 and the glue outlet of the first glue dispensing head 30 is blocked, which effectively avoids the problem of sucking air into the first glue pressing chamber 101 when the suction or thrust generating component 50 generates suction.

[0053] In some embodiments, the first valve body 60 may include a first check valve, which is disposed in a communication channel between a glue outlet of the first glue dispensing head 30 and the first glue pressing chamber 101. When the first check valve is opened, the glue outlet of the first glue dispensing head 30 is connected to the first glue pressing chamber 101. When the first check valve is closed, the first check valve blocks the communication channel between the glue outlet of the first glue dispensing head 30 and the first glue pressing chamber 101.

[0054] Specifically, the first check valve is installed in the third vertical channel 302, and a first slot 303 is provided in the third vertical channel 302 at a position opposite to the first check valve. When the first check valve is opened, the valve core of the first check valve is not in the first slot 303. At this time, the first glue pressing chamber 101 is connected to the glue outlet of the first glue dispensing head 30; when the first check valve is closed, the valve core of the first check valve is in the first slot 303. At this time, the connecting channel between the first glue pressing chamber 101 and the glue outlet of the first glue dispensing head 30 is blocked.

[0055] In some embodiments, Figure 1As shown, a second valve body 70 is provided in the connection channel between the lower glue outlet 2012 and the glue containing chamber 201. When the second valve body 70 is opened, the lower glue outlet 2012 is connected to the glue containing chamber 201. When the second valve body 70 is closed, the second valve body 70 blocks the connection channel between the lower glue outlet 2012 and the glue containing chamber 201.

[0056] A third valve body 80 is provided in the first glue injection channel 40. When the third valve body 80 is opened, the glue inlet of the first glue injection channel 40 is connected with the glue outlet of the first glue injection channel 40. When the third valve body 80 is closed, the third valve body 80 blocks the connection channel between the glue inlet of the first glue injection channel 40 and the glue outlet of the first glue injection channel 40.

[0057] In this embodiment, when the fluorescent glue is sucked into the first glue pressing chamber 101, the first valve body 60 (first check valve) is closed, so that the suction or thrust generating assembly 50 generates suction, and the lower glue outlet 2012 flows out the fluorescent glue into the first glue pressing chamber 101, and the upper glue outlet 2011 flows out the fluorescent glue into the first glue pressing chamber 101. When dispensing glue through the first glue dispensing head 30, the third valve body 80 and the second valve body 70 are closed, and the first valve body 60 is opened, so that the suction or thrust generating assembly 50 generates thrust, so that the fluorescent glue in the first glue pressing chamber 101 is dispensed through the first glue dispensing head 30.

[0058] In this embodiment, closing the second valve body 70 and the third valve body 80 can prevent the glue dispensing from being affected by the first glue injection channel 40 and the first glue hose 20 , thereby increasing the glue dispensing speed.

[0059] In addition, when the liquid level of the fluorescent glue is lower than the position of the upper glue outlet 2011, if glue dispensing is still needed, the third valve body 80 can be closed. At this time, the suction or thrust generating component 50 can suck out the fluorescent glue through the lower glue outlet 2012. If you want to use up the fluorescent glue in the glue chamber 201, you can inject glue by closing the third valve body 80 until all the fluorescent glue in the glue chamber 201 is used up.

[0060] In some embodiments, the second valve body includes a second check valve, which is arranged in the connecting channel between the lower glue outlet 2012 and the glue containing chamber 201. When the second check valve is opened, the lower glue outlet 2012 is connected to the glue containing chamber 201. When the second check valve is opened, the second valve body 70 blocks the connecting channel between the lower glue outlet 2012 and the glue containing chamber 201.

[0061] Specifically, the second check valve is arranged in the connecting passage between the lower glue outlet 2012 and the first glue pressing chamber 101, and a second slot 102 is provided in the connecting passage between the lower glue outlet 2012 and the first glue pressing chamber 101 at a position opposite to the second check valve. When the second check valve is opened, the valve core of the second check valve is not in the second slot 102, and at this time, the lower glue outlet 2012 is connected to the first glue pressing chamber 101; when the second check valve is closed, the valve core of the second check valve is in the second slot 102, and at this time, the connecting passage between the lower glue outlet 2012 and the first glue pressing chamber 101 is blocked.

[0062] In some embodiments, the third valve body 80 includes a third check valve, which is disposed in the first glue injection channel 40. When the third check valve is opened, the glue inlet of the first glue injection channel 40 is connected to the glue outlet of the first glue injection channel 40. When the third check valve is closed, the third check valve blocks the connection channel between the glue inlet of the first glue injection channel 40 and the glue outlet of the first glue injection channel 40.

[0063] Specifically, the third check valve is arranged in the second vertical channel 404, and a third slot 103 is arranged at a position opposite to the third check valve in the second vertical channel 404. When the third check valve is opened, the valve core of the third check valve is not in the third slot 103, and at this time, the upper glue outlet 2011 is connected with the first glue pressing chamber 101; when the third check valve is closed, the valve core of the third check valve is in the third slot 103, and at this time, the connection channel between the upper glue outlet 2011 and the first glue pressing chamber 101 is blocked.

[0064] In some embodiments, Figure 1 As shown, the suction or thrust generating assembly 50 may include a first push rod 501, which is movably disposed on the first shell 10, one end of the first push rod 501 passes through the first shell 10 and extends into the first glue pressing chamber 101, and the other end of the first push rod 501 is located outside the first shell 10, and the circumferential seal of the first push rod 501 abuts against the cavity wall of the first glue pressing chamber 101.

[0065] Specifically, the first glue pressing chamber 101 can be a cylindrical glue pressing chamber, and correspondingly, the first push rod 501 is a cylindrical rod. When the cylindrical rod is set, the diameter of the cylindrical rod is slightly smaller than the inner diameter of the cylindrical glue pressing chamber, so that the circumference of the first push rod 501 and the cylindrical glue pressing chamber can achieve a sealing effect.

[0066] In the specific setting, the difference between the diameter of the cylindrical rod and the cylindrical glue pressing chamber is within the range of 0.1mm. For example, the difference between the diameter of the cylindrical rod and the cylindrical glue pressing chamber is 0.05mm. Of course, the difference between the diameter of the cylindrical rod and the cylindrical glue pressing chamber can also be 0.03mm, 0.08mm, 0.09mm, etc.

[0067] In this embodiment, since the first push rod 501 is movably arranged on the first shell 10 and forms a seal with the first glue pressing chamber 101 in the circumferential direction, when the first push rod 501 is pulled outward, suction is generated in the first glue pressing chamber 101, and when the first push rod 501 is pushed inward, thrust is generated in the first glue pressing chamber 101.

[0068] In specific applications, when the fluorescent glue is sucked into the first glue pressing chamber 101, the first check valve is closed (i.e., the first valve body 60 is closed), the second check valve (i.e., the second valve body 70 is opened) and the third check valve (i.e., the third valve body 80 is opened), the first push rod 501 is pulled outward, and the lower glue outlet 2012 and the upper glue outlet 2011 respectively flow out the fluorescent glue into the first glue pressing chamber 101; when the fluorescent glue is injected outward through the first glue dispensing head 30, the first check valve is opened, the second check valve and the third check valve are closed, and the first push rod 501 is pushed inward, so that the glue can be injected to the outside through the first glue dispensing head 30.

[0069] In some embodiments, the glue dispensing device further includes a liquid level detection sensor, which is used to detect the liquid level of the fluorescent glue in the glue containing chamber 201 , and the liquid level detection sensor is disposed in the glue containing chamber 201 .

[0070] Specifically, the liquid level detection sensor is connected to the controller of the packaging machine. The liquid level detection sensor detects the liquid level of the fluorescent glue in the glue chamber 201 and transmits it to the controller. The operator can obtain the liquid level of the fluorescent glue in the glue chamber 201 through the packaging machine.

[0071] In a specific embodiment, the liquid level detection sensor is arranged at a position slightly lower than the upper glue outlet 2011 in the glue chamber 201. When the liquid level detection sensor detects that the liquid level of the fluorescent glue in the glue chamber 201 is lower than the upper glue outlet 2011, the packaging machine will alarm to remind the operator to add fluorescent glue to the glue chamber 201.

[0072] In summary, the present invention provides a dispensing device, which has the following beneficial effects:

[0073] When injecting glue, suction is generated by the suction or thrust generating component 50, so that the fluorescent glue is injected into the first glue pressing chamber 101 from the upper glue outlet 2011 and the lower glue outlet 2012. When the fluorescent glue is precipitated, the upper glue outlet 2011 flows out the fluorescent glue with low concentration, and the lower glue outlet 2012 flows out the fluorescent glue with high concentration, so that the fluorescent glue with high concentration and the fluorescent glue with low concentration are mixed in the first glue pressing chamber 101. After that, the suction or thrust generating component 50 generates thrust and dispenses the mixed fluorescent glue outward through the first glue dispensing head 30. It can be seen that the concentration difference of the fluorescent glue dispensed by the glue dispensing device when the fluorescent glue in the glue holding chamber 201 is precipitated is reduced, so that the yield rate of glue dispensing is improved.

[0074] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A dispensing device, characterized in that: include: A first housing having a first glue pressing chamber; A first rubber tube having a glue holding chamber, the glue holding chamber being used to hold fluorescent glue, the first rubber tube being provided with a lower glue outlet and an upper glue outlet communicating with the glue holding chamber, the upper glue outlet being provided on a side wall of the first rubber tube, the lower glue outlet being provided at the bottom of the first rubber tube, and the lower glue outlet being communicated with the first glue pressing chamber; A first glue dispensing head, used for dispensing glue to the outside, wherein a glue inlet of the first glue dispensing head is connected to the first glue pressing chamber; A first glue injection channel, used for connecting the upper glue outlet with the first glue pressing chamber; A suction or thrust generating component is disposed on the first shell, and is used to inject the fluorescent glue from the upper glue outlet and the lower glue outlet into the first glue pressing chamber when generating suction, and is also used to dispense the fluorescent glue in the first glue pressing chamber from the first glue dispensing head to the outside when generating thrust; Wherein, when the fluorescent glue in the glue holding chamber is dispensed after being precipitated, the fluorescent glue with low concentration flows out from the upper glue outlet, and the fluorescent glue with high concentration flows out from the lower glue outlet.

2. The dispensing device according to claim 1, characterized in that: When the suction or thrust generating component generates thrust, the fluorescent glue in the first glue pressing chamber moves along a first direction, and the first direction is a direction perpendicular to the direction of gravity.

3. The dispensing device according to claim 2, characterized in that: The first rubber hose is vertically arranged with respect to the first shell, the first rubber hose is located above the first shell, and the first rubber hose is vertically arranged; The glue outlet of the first glue injection channel is located at the bottom of the first glue pressing chamber, the glue outlet of the first glue injection channel is located below the lower glue outlet, and the glue outlet of the first glue injection channel is arranged opposite to the lower glue outlet.

4. The dispensing device according to any one of claims 1 to 3, characterized in that: A first valve body is provided in the communication passage between the glue outlet of the first glue dispensing head and the first glue pressing chamber. When the first valve body is opened, the glue outlet of the first glue dispensing head is communicated with the first glue pressing chamber. When the first valve body is closed, the first valve body blocks the communication passage between the glue outlet of the first glue dispensing head and the first glue pressing chamber.

5. The glue dispensing device according to claim 4, characterized in that: The first valve body includes a first check valve, which is arranged in a communication passage between the glue outlet of the first glue dispensing head and the first glue pressing chamber. When the first check valve is opened, the glue outlet of the first glue dispensing head is communicated with the first glue pressing chamber. When the first check valve is closed, the first check valve blocks the communication passage between the glue outlet of the first glue dispensing head and the first glue pressing chamber.

6. The dispensing device according to claim 5, characterized in that: A second valve body is provided in the connection passage between the lower glue outlet and the glue containing chamber. When the second valve body is opened, the lower glue outlet is connected to the glue containing chamber. When the second valve body is closed, the second valve body blocks the connection passage between the lower glue outlet and the glue containing chamber. A third valve body is provided in the first glue injection channel. When the third valve body is opened, the glue inlet of the first glue injection channel is connected with the glue outlet of the first glue injection channel. When the third valve body is closed, the third valve body blocks the connection channel between the glue inlet of the first glue injection channel and the glue outlet of the first glue injection channel.

7. The dispensing device according to claim 6, characterized in that: The second valve body includes a second check valve, which is arranged in a connecting passage between the lower glue outlet and the glue containing chamber. When the second check valve is opened, the lower glue outlet is connected to the glue containing chamber. When the second check valve is closed, the second valve body blocks the connecting passage between the lower glue outlet and the glue containing chamber.

8. The dispensing device according to claim 7, characterized in that: The third valve body includes a third check valve, and the third check valve is arranged in the first glue injection channel. When the third check valve is opened, the glue inlet of the first glue injection channel is connected with the glue outlet of the first glue injection channel. When the third check valve is closed, the third check valve blocks the connection channel between the glue inlet of the first glue injection channel and the glue outlet of the first glue injection channel.

9. The dispensing device according to claim 8, characterized in that: The suction or thrust generating assembly includes: a first push rod, which is movably arranged on the first shell, one end of the first push rod passes through the first shell and extends into the first glue pressing chamber, the other end of the first push rod is located outside the first shell, and the circumferential seal of the first push rod abuts against the cavity wall of the first glue pressing chamber.

10. The dispensing device according to claim 1, characterized in that: Also includes: The liquid level detection sensor is used to detect the liquid level of the fluorescent glue in the glue containing chamber, and the liquid level detection sensor is arranged in the glue containing chamber.

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