Dispensing device

Abstract

The application discloses a dispensing device, which comprises a first shell with a first glue pressing chamber; a first glue pipe with a glue containing chamber, the first glue pipe is provided with a lower glue outlet and an upper glue outlet which are communicated with the glue containing chamber, the upper glue outlet is arranged on the side wall of the first glue pipe, the lower glue outlet is arranged on the bottom of the first glue pipe, and the lower glue outlet is communicated with the first glue pressing chamber; a first dispensing head, the glue inlet of the first dispensing head is communicated with the first glue pressing chamber; a first glue injection channel for connecting the upper glue outlet and the first glue pressing chamber; a suction force or thrust force generating assembly arranged on the first shell, the suction force or thrust force generating assembly is used for injecting fluorescent glue from the upper glue outlet and the lower glue outlet into the first glue pressing chamber when the suction force is generated, and is also used for dispensing the fluorescent glue in the first glue pressing chamber to the outside from the first dispensing head when the thrust force is generated. The dispensing device reduces the concentration difference of the fluorescent glue dispensed when the fluorescent glue in the glue containing chamber is deposited, and improves the yield of dispensing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED packaging, in particular to a dispensing device. BACKGROUND

[0002] The dispensing device used in LED (Light Emitting Diode) lamp bead packaging dispensing is realized by the way of cavity glue pressing, as shown in the structure diagram of a traditional dispensing device, the dispensing device comprises a second push rod 903, a second shell 902 provided with a second glue pressing cavity 904, a second dispensing head 905 and a second glue pipe 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 cavity 904, the second glue pipe 901 is arranged on one side of the second shell 902, and the second glue pipe 901 and the second glue pressing cavity 904 are communicated through a second glue injection channel 906, wherein the second glue pipe 901 and the second glue pressing cavity 904 are vertically placed. Figure 2 Although the dispensing device can perform dispensing operation, since the second glue pipe 901 and the second glue pressing cavity 904 are vertically placed, the deposition phenomenon occurs in the second glue pipe 901 when the dispensing device stays for a long time without dispensing, the phenomenon that the concentration of fluorescent glue in the upper part of the second glue pipe 901 is low and the concentration of fluorescent glue in the lower part is low occurs, and the dispensing yield is poor.

[0003] Therefore, the prior art still needs to be improved and developed.

[0004] SUMMARY In view of the above problems of the prior art, the purpose of the present application is to provide a dispensing device to solve the problem that the deposition phenomenon occurs in the second glue pipe and the second glue pressing cavity when the traditional dispensing device in the prior art stays for a long time without dispensing, the phenomenon that the concentration of fluorescent glue in the upper part of the second glue pipe and the second glue pressing cavity is low and the concentration of fluorescent glue in the lower part is low occurs, and the dispensing yield is poor.

[0005] The technical scheme adopted by the present application to solve the technical problem is to provide a dispensing device, comprising:

[0006] a first shell having a first glue pressing cavity;

[0007] a first glue pipe having a glue containing cavity for placing fluorescent glue, the first glue pipe is provided with a lower glue outlet and an upper glue outlet communicated with the glue containing cavity, the upper glue outlet is arranged on the side wall of the first glue pipe, the lower glue outlet is arranged on the bottom of the first glue pipe, and the lower glue outlet is communicated with the first glue pressing cavity;

[0008]

[0009] ​A first glue dispensing head is configured to dispense glue to the outside, and a glue inlet of the first glue dispensing head is communicated with the first glue pressing chamber;

[0010] A first glue injection channel is configured to communicate the upper glue outlet with the first glue pressing chamber.

[0011] A suction force or pushing force generating assembly is arranged on the first housing, and the suction force or pushing force generating assembly is configured to inject the fluorescent glue from the upper glue outlet and the lower glue outlet into the first glue pressing chamber when the suction force is generated, and configured to dispense the fluorescent glue in the first glue pressing chamber from the first glue dispensing head to the outside when the pushing force is generated.

[0012] When the fluorescent glue in the glue containing chamber is precipitated and then dispensed, 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] In a further arrangement of the present application, when the suction force or pushing force generating assembly generates the pushing force, the fluorescent glue in the first glue pressing chamber moves in a first direction, and the first direction is perpendicular to the direction of gravity.

[0014] In a further arrangement of the present application, the first glue pipe is arranged perpendicularly to the first housing, the first glue pipe is arranged above the first housing, and the first glue pipe is arranged vertically.

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

[0016] In a further arrangement of the present application, a first valve body is arranged in the communication channel between the glue outlet of the first glue dispensing head and the first glue pressing chamber, the first valve body is opened to communicate the glue outlet of the first glue dispensing head with the first glue pressing chamber, and the first valve body is closed to block the communication between the glue outlet of the first glue dispensing head and the first glue pressing chamber.

[0017] In a further arrangement of the present application, the first valve body comprises a first check valve, the first check valve is arranged in the communication channel between the glue outlet of the first glue dispensing head and the first glue pressing chamber, the first check valve is opened to communicate the glue outlet of the first glue dispensing head with the first glue pressing chamber, and the first check valve is closed to block the communication between the glue outlet of the first glue dispensing head and the first glue pressing chamber.

[0018] Further, the lower glue outlet is connected with the glue storage chamber through a connecting channel, and a second valve is arranged in the connecting channel.

[0019] A third valve is arranged in the first glue injection channel, and the third valve is opened to connect the glue inlet of the first glue injection channel with the glue outlet of the first glue injection channel, and the third valve is closed to block the connecting channel between the glue inlet of the first glue injection channel and the glue outlet of the first glue injection channel.

[0020] Further, the second valve comprises a second check valve arranged in the connecting channel between the lower glue outlet and the glue storage chamber, and the second check valve is opened to connect the lower glue outlet with the glue storage chamber, and the second check valve is closed to block the connecting channel between the lower glue outlet and the glue storage chamber.

[0021] Further, the third valve comprises a third check valve arranged in the first glue injection channel, and the third check valve is opened to connect the glue inlet of the first glue injection channel with the glue outlet of the first glue injection channel, and the third check valve is closed to block the connecting channel between the glue inlet of the first glue injection channel and the glue outlet of the first glue injection channel.

[0022] Further, the suction force or pushing force generating assembly comprises a first pushing rod movably arranged on the first housing, one end of the first pushing rod penetrating through the first housing and extending into the first glue pressing chamber, and the other end of the first pushing rod being located outside the first housing, and the first pushing rod being peripherally sealed to the cavity wall of the first glue pressing chamber.

[0023] Further, the suction force or pushing force generating assembly comprises a first pushing rod movably arranged on the first housing, one end of the first pushing rod penetrating through the first housing and extending into the first glue pressing chamber, and the other end of the first pushing rod being located outside the first housing, and the first pushing rod being peripherally sealed to the cavity wall of the first glue pressing chamber.

[0024] A liquid level detection sensor is arranged in the glue storage chamber to detect the liquid level of the fluorescent glue in the glue storage chamber.

[0025] The present application has the following beneficial effects:

[0026] This invention provides a dispensing device, comprising: a first housing having a first pressing chamber; a first adhesive tube having an adhesive receiving chamber for holding fluorescent adhesive, the adhesive receiving chamber being provided with a lower adhesive outlet and an upper adhesive outlet communicating with the adhesive receiving chamber, the upper adhesive outlet being disposed on the side wall of the first adhesive tube, the lower adhesive outlet being disposed at the bottom of the first adhesive tube, and the lower adhesive outlet communicating with the first pressing chamber; a first dispensing head for dispensing adhesive externally, the adhesive inlet of the first dispensing head communicating with the first pressing chamber; and a first injection... A glue channel is provided to connect the upper glue outlet with the first glue-pressing chamber. A suction or thrust generating component is disposed on the first housing. The suction or thrust generating component is used to inject 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 dispense fluorescent glue in the first glue-pressing chamber from the first dispensing head to the outside when thrust is generated. In this case, when the fluorescent glue in the glue-containing chamber settles and is dispensed, the fluorescent glue with a lower concentration flows out from the upper glue outlet, and the fluorescent glue with a higher concentration flows out from the lower glue outlet. The technical solution of this invention, during dispensing, uses a suction or thrust generating component to generate suction, causing fluorescent adhesive to be injected into the first pressing chamber from the upper and lower dispensing ports. When the fluorescent adhesive settles, low-concentration fluorescent adhesive flows out from the upper dispensing port, and high-concentration fluorescent adhesive flows out from the lower dispensing port, allowing the high-concentration and low-concentration fluorescent adhesives to mix in the first pressing chamber. Then, the suction or thrust generating component generates thrust to dispense the mixed fluorescent adhesive outward through the first dispensing head. Thus, the concentration difference of the dispensing adhesive is reduced when the fluorescent adhesive settles in the dispensing chamber, resulting in a higher dispensing yield. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional view of the structure of the dispensing device in this invention.

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

[0030] The same reference signs in the drawings indicate the same components: 10, first housing; 101, first glue pressing chamber; 102, second notch; 103, third notch; 20, first glue pipe; 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 force or thrust force generating assembly; 501, first push rod; 60, first valve body; 70, second valve body; 80, third valve body; 901, second glue pipe; 902, second housing; 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, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical solutions, and cannot be understood as indicating that the devices or elements referred to must have a particular direction, therefore it cannot be understood as a limitation on the present application.

[0032] As shown in Figure 1 A glue dispensing device provided by the present application can include a first housing 10 having a first glue pressing chamber 101, a first glue pipe 20 having a glue containing chamber 201, a first glue dispensing head 30, a first glue injection channel 40, and a suction force or thrust force generating assembly 50.

[0033] The first glue pipe 20 is provided with a lower glue outlet 2012 and an upper glue outlet 2011 which are in communication with the glue containing chamber 201. The upper glue outlet 2011 is arranged on the side wall of the first glue pipe 20, and the lower glue outlet 2012 is arranged on the bottom of the first glue pipe 20. The lower glue outlet 2012 is in communication with the first glue pressing chamber 101. The first glue dispensing head 30 is used for dispensing glue externally. The glue inlet of the first glue dispensing head 30 is in communication with the first glue pressing chamber 101. The first glue injection channel 40 is used for connecting the upper glue outlet 2011 and the first glue pressing chamber 101. The suction force or thrust force generating assembly 50 is arranged on the first shell 10. When the suction force is generated, the suction force or thrust force generating assembly 50 is used for injecting the fluorescent glue from the upper glue outlet 2011 and the lower glue outlet 2012 into the first glue pressing chamber 101. When the thrust force is generated, the suction force or thrust force generating assembly 50 is used for dispensing the fluorescent glue in the first glue pressing chamber 101 from the first glue dispensing head 30 to the outside. When the fluorescent glue in the glue containing chamber 201 is precipitated and then dispensed, 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 glue pipe 20 can be a cylindrical glue pipe. The glue containing chamber 201 in the first glue pipe 20 can also be a cylindrical chamber. The specific volume of the glue containing chamber 201 can be determined according to the actual situation when the glue containing chamber 201 is arranged. The cylindrical chamber is filled with fluorescent glue when dispensing 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. The specific volume of the first glue pressing chamber 101 can be determined according to the actual situation when the first glue pressing chamber 101 is arranged. When the suction force or thrust force generating assembly 50 generates the suction force, the suction force is generated in the first glue pressing chamber 101. When the suction force or thrust force generating assembly 50 generates the thrust force, the outward thrust force 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] When dispensing glue, the suction force or thrust force generating assembly 50 generates the suction force to inject the fluorescent glue in the glue containing chamber 201 from the upper glue outlet 2011 and the lower glue outlet 2012 into the first glue pressing chamber 101. When the fluorescent glue is precipitated, the fluorescent glue is stratified in the glue containing chamber 201. The upper layer is the fluorescent glue with low concentration, and the lower layer is the fluorescent glue with high concentration. When the fluorescent glue is 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. The fluorescent glue injected into the first glue pressing chamber 101 from the upper glue outlet 2011 is mixed with the fluorescent glue injected into the first glue pressing chamber 101 from the lower glue outlet 2012. Then, the suction force or thrust force generating assembly 50 generates the thrust force to dispense the mixed fluorescent glue in the first glue pressing chamber 101 to the outside through the glue outlet.

[0036] When the fluorescent adhesive in the adhesive accommodating chamber 201 is precipitated, the concentration of the fluorescent adhesive injected into the first adhesive pressing chamber 101 through the upper adhesive outlet 2011 is low (i.e., low-concentration fluorescent adhesive), and the concentration of the fluorescent adhesive injected into the first adhesive pressing chamber 101 through the lower adhesive outlet 2012 is high (i.e., high-concentration fluorescent adhesive). The low-concentration fluorescent adhesive and the high-concentration fluorescent adhesive are mixed in the first adhesive pressing chamber 101.

[0037] Therefore, the concentration difference of the fluorescent adhesive dispensed by the adhesive dispensing device is reduced when the fluorescent adhesive in the adhesive accommodating chamber 201 is precipitated, and the yield of the dispensing is improved.

[0038] It should be noted that when the upper adhesive outlet 2011 is arranged, the above requirements are met (i.e., the low-concentration fluorescent adhesive can flow into the first adhesive pressing chamber 101 from the upper adhesive outlet under the action of the suction force generated by the suction force or pushing force generating assembly 50 after the fluorescent adhesive in the adhesive accommodating chamber 201 is precipitated), and the specific position of the upper adhesive outlet 2011 can be opened according to the actual situation by those skilled in the art.

[0039] In a specific embodiment, the lower adhesive outlet 2012 is arranged at the bottom of the first adhesive pipe 20, and the upper adhesive outlet 2011 is arranged at a position at half the height of the first adhesive pipe 20.

[0040] When the adhesive dispensing device is applied, the fluorescent adhesive in the first adhesive pressing chamber 101 may not be dispensed completely, and then the fluorescent adhesive not dispensed completely in the first adhesive pressing chamber 101 will be precipitated after the adhesive dispensing device is placed for a period of time. In order to solve the problem that the concentration difference of the fluorescent adhesive dispensed by the adhesive dispensing device is affected by the precipitation in the first adhesive pressing chamber 101, the adhesive dispensing device is arranged as shown in Figure 1 When the pushing force generating assembly 50 generates the pushing force, the fluorescent adhesive in the first adhesive pressing chamber 101 flows in a direction perpendicular to the gravity (i.e., the first direction).

[0041] Since the fluorescent adhesive in the first adhesive pressing chamber 101 flows in a direction perpendicular to the gravity when the pushing force generating assembly 50 generates the pushing force, the fluorescent adhesive dispensed by the first adhesive dispensing head 30 includes both high-concentration fluorescent adhesive and low-concentration fluorescent adhesive, which reduces the concentration difference of the fluorescent adhesive dispensed by the first adhesive dispensing head 30 and further improves the yield.

[0042] In some embodiments, as shown in Figure 1 When the first adhesive pipe 20 and the first housing 10 are arranged, the first adhesive pipe 20 and the first housing 10 are arranged vertically, the first adhesive pipe 20 is located above the first housing 10, and the first adhesive pipe 20 is arranged vertically; the adhesive outlet of the first adhesive injection channel 40 is located at the bottom of the first adhesive pressing chamber 101, the adhesive outlet of the first adhesive injection channel 40 is located below the lower adhesive outlet 2012, and the adhesive outlet of the first adhesive injection channel 40 and the lower adhesive outlet 2012 are arranged oppositely.

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

[0044] When the first glue pipe 20 is arranged, the first glue pipe 20 is vertically arranged on the first shell 10 and close to one end of the first dispensing head 30, and the lower glue outlet 2012 of the first glue pipe 20 is communicated with the first glue pressing chamber 101.

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

[0046] Specifically, the first glue injection channel 40 can 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 communicated with one end of the first vertical channel 402, the other end of the first vertical channel 402 is communicated with one end of the second horizontal channel 403, the other end of the second horizontal channel 403 is communicated with one end of the second vertical channel 404, the other end of the second vertical channel 404 is communicated with 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 force or push force generating assembly 50 generates suction force, 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 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 is arranged opposite to the glue outlet of the first glue injection channel 40, and the glue outlet of the first glue injection channel 40 is located below the upper glue outlet 2011, the fluorescent glue of the upper glue outlet 2011 and the fluorescent glue of the first glue injection channel 40 can be better mixed, further reducing the concentration difference of the fluorescent glue, that is, further improving the dispensing yield.

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

[0050] Specifically, the first glue dispensing head 30 can include a third horizontal passage 301 and a third vertical passage 302. One end of the third horizontal passage 301 is in communication with the first glue pressing chamber 101, and the other end of the third horizontal passage 301 is in communication with one end of the third vertical passage 302. The other end of the third vertical passage 302 is the glue outlet of the first glue dispensing head 30.

[0051] In some embodiments, the first valve body 60 can be arranged in the third vertical passage 302 or the third horizontal passage 301. In a specific embodiment, the first valve body 60 is arranged in the third vertical passage 302.

[0052] In a specific application, when the first glue pressing chamber 101 is filled with fluorescent glue by the suction or thrust generating assembly 50, the first valve body 60 can be closed. At this time, the communication passage between the first glue pressing chamber 101 and the glue outlet of the first glue dispensing head 30 is blocked, effectively avoiding the problem of air being sucked into the first glue pressing chamber 101 when the suction or thrust generating assembly 50 generates suction.

[0053] In some embodiments, the first valve body 60 can include a first check valve arranged in the communication passage between the 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 in communication with the first glue pressing chamber 101. 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 30 and the first glue pressing chamber 101.

[0054] Specifically, the first check valve is arranged in the third vertical passage 302. A first notch 303 is formed in the third vertical passage 302 opposite the first check valve. When the first check valve is opened, the valve core of the first check valve is not in the first notch 303. At this time, the first glue pressing chamber 101 is in communication with 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 notch 303. At this time, the communication passage between the first glue pressing chamber 101 and the glue outlet of the first glue dispensing head 30 is blocked.

[0055] In some embodiments, as shown in FIG. 6, the first check valve is arranged in the third horizontal passage 301. Figure 1As shown, the second valve body 70 is arranged in the connecting passage 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 in communication with the glue containing chamber 201. When the second valve body 70 is closed, the second valve body 70 blocks the connecting passage between the lower glue outlet 2012 and the glue containing chamber 201.

[0056] The third valve body 80 is arranged in the first glue injection passage 40. When the third valve body 80 is opened, the glue inlet of the first glue injection passage 40 is in communication with the glue outlet of the first glue injection passage 40. When the third valve body 80 is closed, the third valve body 80 blocks the connecting passage between the glue inlet of the first glue injection passage 40 and the glue outlet of the first glue injection passage 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, the suction force or pushing force generating assembly 50 generates suction force, the fluorescent glue flows out of the lower glue outlet 2012 into the first glue pressing chamber 101, and the fluorescent glue flows out of the upper glue outlet 2011 into the first glue pressing chamber 101. When the fluorescent glue is dispensed 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 force or pushing force generating assembly 50 generates pushing force, and the fluorescent glue in the first glue pressing chamber 101 is dispensed through the first glue dispensing head 30.

[0058] In this embodiment, the second valve body 70 and the third valve body 80 are closed, so that the dispensing is not affected by the first glue injection passage 40 and the first glue pipe 20, and the dispensing speed is improved.

[0059] In addition, when the liquid level of the fluorescent glue is lower than the position of the upper glue outlet 2011, if the fluorescent glue still needs to be dispensed, the third valve body 80 can be closed, at this time, the suction force or pushing force generating assembly 50 can suck the fluorescent glue through the lower glue outlet 2012. If it is intended to use up the fluorescent glue in the glue containing chamber 201, the third valve body 80 can be closed to inject glue until the fluorescent glue in the glue containing chamber 201 is completely used up.

[0060] In some embodiments, the second valve body comprises a second check valve, the check valve is arranged in the connecting passage 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 in communication with the glue containing chamber 201. When the second check valve is closed, the second valve body 70 blocks the connecting passage between the lower glue outlet 2012 and the glue containing chamber 201.

[0061] Specifically, the second check valve is installed in the connection channel between the lower glue outlet 2012 and the first glue pressing chamber 101. A second slot 102 is provided in the connection channel 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. 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. At this time, the connection channel 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 open, 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 between the glue inlet and the glue outlet of the first glue injection channel 40.

[0063] Specifically, the third check valve is disposed in the second vertical channel 404. A third slot 103 is disposed in the second vertical channel 404 opposite to the third check valve. When the third check valve is opened, the valve core of the third check valve is not in the third slot 103. At this time, the upper glue outlet 2011 is connected to 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. 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, such as Figure 1 As shown, the suction or thrust generating component 50 may include a first push rod 501, which is movably disposed on the first housing 10. One end of the first push rod 501 passes through the first housing 10 and extends into the first pressing chamber 101, while the other end of the first push rod 501 is located outside the first housing 10. The circumferential seal of the first push rod 501 abuts against the cavity wall of the first pressing chamber 101.

[0065] Specifically, the first pressing chamber 101 can be a cylindrical 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 pressing chamber, so that the circumference of the first push rod 501 and the cylindrical pressing chamber can achieve a sealing effect.

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

[0067] In the embodiment, since the first push rod 501 is movably arranged on the first housing 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, pushing force is generated in the first glue pressing chamber 101.

[0068] In a specific application, when the fluorescent glue is sucked into the first glue pressing chamber 101, the first check valve (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) are closed, the first push rod 501 is pulled outward, and the lower glue outlet 2012 and the upper glue outlet 2011 respectively flow the fluorescent glue into the first glue pressing chamber 101; when the fluorescent glue is injected outward through the first glue 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 fluorescent glue can be injected outward through the first glue head 30.

[0069] In some embodiments, the glue dispensing device further comprises a liquid level detection sensor arranged in the glue containing chamber 201.

[0070] Specifically, the liquid level detection sensor is connected with the controller of the packaging machine, the liquid level detection sensor detects the liquid level of the fluorescent glue in the glue containing chamber 201 and transmits it to the controller, and the operator can obtain the liquid level of the fluorescent glue in the glue containing 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 containing chamber 201, when the liquid level detection sensor detects that the liquid level of the fluorescent glue in the glue containing chamber 201 is lower than the upper glue outlet 2011, the packaging machine alarms to remind the operator to add fluorescent glue to the glue containing chamber 201.

[0072] In summary, the present application provides a glue dispensing device with the following advantages:

[0073] When injecting glue, the suction force generating assembly 50 generates suction force 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 the fluorescent glue is deposited, 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, and then the suction force generating assembly 50 generates pushing force to inject the mixed fluorescent glue outward through the first glue head 30, so it can be seen that the concentration difference of the fluorescent glue injected by the glue dispensing device when the fluorescent glue in the glue containing chamber 201 is deposited is reduced, and the yield of the glue dispensing is improved.

[0074] It can be understood that the above embodiments only express the preferred embodiments of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation to the patent scope of the present application; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and several modifications and improvements can be made, which all belong to the protection scope of the present application; therefore, any equivalent transformation and modification made to the patent claim scope of the present application shall belong to the coverage of the patent claim of the present application.

Claims

1. A dispensing device, characterized in that, include: A first housing having a first pressure-bonding chamber; A first tube having a glue-containing chamber for holding fluorescent glue, the first tube having a lower glue outlet and an upper glue outlet communicating with the glue-containing chamber, the upper glue outlet being located on the side wall of the first tube, the lower glue outlet being located at the bottom of the first tube, and the lower glue outlet communicating with the first glue-pressing chamber. The first dispensing head is used to dispense adhesive to the outside, and the inlet of the first dispensing head is connected to the first pressing chamber. The first glue injection channel is used to connect the upper glue outlet with the first glue pressing chamber; A suction or thrust generating component is disposed on the first housing. The suction or thrust generating component is used to inject fluorescent adhesive from the upper adhesive outlet and the lower adhesive outlet into the first pressing chamber when generating suction, and is also used to dispense fluorescent adhesive in the first pressing chamber from the first dispensing head to the outside when generating thrust. When the fluorescent adhesive in the adhesive chamber is deposited and then dispensed, the fluorescent adhesive with a lower concentration flows out from the upper outlet, and the fluorescent adhesive with a higher concentration flows out from the lower outlet.

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

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

4. The dispensing apparatus according to any one of claims 1-3, characterized in that, A first valve body is provided in the communication channel between the glue outlet of the first glue dispensing head and the first pressure chamber. When the first valve body is open, the glue outlet of the first glue dispensing head is connected to the first pressure chamber. When the first valve body is closed, the first valve body blocks the communication channel between the glue outlet of the first glue dispensing head and the first pressure chamber.

5. The dispensing device according to claim 4, characterized in that, The first valve body includes a first check valve, which is disposed in the communication channel between the glue outlet of the first glue dispensing head and the first pressure chamber. When the first check valve is open, the glue outlet of the first glue dispensing head is connected to the first pressure chamber. 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 and the first pressure chamber.

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

8. The dispensing device according to claim 7, characterized in that, The third valve body includes a third check valve, which is disposed in the first glue injection channel. When the third check valve is open, the glue inlet of the first glue injection channel is connected to the glue outlet of the first glue injection channel. When the third check valve is closed, the third check valve blocks the connection between the glue inlet 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 component includes: a first push rod, which is movably disposed on the first housing, one end of the first push rod passing through the first housing and extending into the first pressing chamber, the other end of the first push rod being located outside the first housing, and the first push rod circumferentially sealingly abutting against the cavity wall of the first pressing chamber.

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

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