Dispensing device

Abstract

The utility model discloses a glue dispensing device which comprises a glue dispensing head, a first glue inlet and a second glue inlet, the first glue pipe is provided with a containing cavity and a second glue outlet communicated with the containing cavity; the base is provided with a first glue pressing chamber communicated with the first glue inlet and the second glue outlet and a second glue pressing chamber communicated with the first glue inlet and the second glue outlet; the on-off assembly is arranged on the base and comprises a first state and a second state, and the force generating mechanism is arranged on the base. When dispensing is carried out, the on-off assembly is alternately in the first state and the second state, continuous dispensing operation can be carried out, the dispensing efficiency is improved, the phenomenon that fluorescent glue in the dispensing head drips due to gravity is avoided due to continuous operation, and the fluorescent glue is further saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED packaging technical field especially relates to a point gum device. BACKGROUND

[0002] The dispensing mode of the dispensing device used when LED (Light Emitting Diode) lamp bead packaging dispensing is realized by the way of cavity glue pressing. When dispensing, the traditional dispensing device carries out glue sucking or glue pressing by pulling, wherein glue sucking refers to sucking fluorescent glue from the first glue pipe into the glue pressing chamber when suction force is generated in the glue pressing chamber of the dispensing device, and glue pressing refers to dispensing from the glue pressing chamber to the workpiece when pushing force is generated in the glue pressing chamber of the dispensing device.

[0003] Although the traditional dispensing device can carry out dispensing operation, when carrying out glue sucking operation, the traditional dispensing device needs to pause dispensing operation, which affects dispensing operation efficiency, and when pausing dispensing, the fluorescent glue in the dispensing head will appear dripping phenomenon due to gravity, therefore, after completing glue sucking, it is necessary to carry out glue discharging to empty the gap in the dispensing head caused by fluorescent glue dripping, which exists the problem of wasting fluorescent glue.

[0004] Therefore, the prior art still needs to be improved and developed. INVENTION CONTENTS

[0005] In view of the above problems of the prior art, the purpose of the utility model is to provide a dispensing device to solve the problem that the dispensing device in the prior art needs to pause dispensing operation when carrying out glue sucking operation, which affects dispensing operation efficiency, and when pausing dispensing, the fluorescent glue in the dispensing head will appear dripping phenomenon due to gravity, therefore, after completing glue sucking, it is necessary to carry out glue discharging to empty the gap in the dispensing head caused by fluorescent glue dripping, which exists the problem of wasting fluorescent glue.

[0006] The utility model provides a dispensing device, which comprises:

[0007] The dispensing head comprises a first glue inlet;

[0008] The first glue pipe is provided with a containing chamber for containing fluorescent glue and a second glue outlet communicated with the containing chamber;

[0009] The base is provided with a first glue pressing chamber communicated with the first glue inlet and the second glue outlet and a second glue pressing chamber communicated with the first glue inlet and the second glue outlet;

[0010] An on / off component is disposed on the base. The on / off component includes a first state and a second state. In the first state, the connection between the first glue-pressing chamber and the second glue outlet is in a connected state, and the connection between the first glue-pressing chamber and the first glue inlet is in a disconnected state. The connection between the second glue-pressing chamber and the second glue outlet is in a disconnected state, and the connection between the second glue-pressing chamber and the first glue inlet is in a connected state. In the second state, the connection between the first glue-pressing chamber and the second glue outlet is in a disconnected state, and the connection between the first glue-pressing chamber and the first glue inlet is in a connected state. The connection between the second glue-pressing chamber and the second glue outlet is in a connected state, and the connection between the second glue-pressing chamber and the first glue inlet is in a disconnected state.

[0011] A force generating mechanism is disposed on the base, wherein, when the on / off component is in the first state, the force generating mechanism is used to generate suction in the first pressing chamber and thrust in the second pressing chamber; when the on / off component is in the second state, the force generating mechanism is used to generate thrust in the first pressing chamber and suction in the second pressing chamber.

[0012] In a further embodiment of this invention, the on / off component includes:

[0013] A first valve body having a connection channel is disposed on the base and located at the second dispensing port;

[0014] A second valve body with a connection channel is disposed on the base and located at the first glue inlet;

[0015] Wherein, when the on / off component is in the first state, the connection channel of the first valve body connects the connection path between the first pressing chamber and the second dispensing port, the first valve body disconnects the connection path between the second pressing chamber and the second dispensing port, the second valve body disconnects the connection path between the first pressing chamber and the second dispensing port, and the connection channel of the second valve body connects the connection path between the second pressing chamber and the first dispensing port.

[0016] When the on / off component is in the second state, the first valve body disconnects the connection between the first pressing chamber and the second dispensing port, the connection channel of the first valve body connects the connection between the second pressing chamber and the second dispensing port, the connection channel of the second valve body connects the connection between the first pressing chamber and the second dispensing port, and the second valve body disconnects the connection between the second pressing chamber and the first dispensing port.

[0017] In a further embodiment of this invention, the first valve body is a single-channel rotary valve or a dual-channel on / off valve.

[0018] In a further embodiment of this invention, the second valve body is a single-channel rotary valve or a dual-channel on / off valve.

[0019] In a further embodiment of this invention, the first pressing chamber and the second pressing chamber are symmetrically arranged, and the distance from the first pressing chamber to the second glue outlet is equal to the distance from the second pressing chamber to the second glue outlet, and the distance from the first pressing chamber to the first glue inlet is equal to the distance from the second pressing chamber to the first glue inlet.

[0020] In a further embodiment of this invention, the force generating mechanism includes:

[0021] A first force generating component is disposed on the base. When the on / off component is in the first state, the first force generating component is used to generate suction in the first pressing chamber. When the on / off component is in the second state, the first force generating component is used to generate thrust in the first pressing chamber.

[0022] A second force generating component is disposed on the base. When the on / off component is in the first state, the second force generating component is used to generate a thrust in the second pressing chamber. When the on / off component is in the second state, the second force generating component is used to generate a suction in the second pressing chamber.

[0023] In a further embodiment of this invention, the first force generating component includes:

[0024] The first push rod has its outer side wall sliding against the inner side wall of the first pressing chamber, so that the first push rod is in sealed contact with the first pressing chamber.

[0025] In a further embodiment of this invention, the second force generating component includes:

[0026] The second push rod has its outer side wall sliding against the inner side wall of the second pressing chamber, so that the second push rod is in sealed contact with the second pressing chamber.

[0027] In a further embodiment of this invention, the first rubber tube is disposed on the base.

[0028] When the dispensing device of this invention is dispensing adhesive, with the on / off component in the first state, the first pressure chamber is connected to the second outlet, and disconnected from the first inlet. The second pressure chamber is disconnected from the second outlet, and connected to the first inlet. At this time, a suction force is generated in the first pressure chamber, drawing the fluorescent adhesive from the receiving chamber into the first pressure chamber. A thrust force is generated in the second pressure chamber, pressing the fluorescent adhesive in the second pressure chamber into the first pressure chamber. Dispensing is performed through the dispensing head. When the on / off component is in the second state, the first pressure chamber is disconnected from the second outlet, while the first pressure chamber is connected to the first inlet. The second pressure chamber is connected to the second outlet, while the second pressure chamber is disconnected from the first inlet. At this time, a thrust is generated in the first pressure chamber, pressing the fluorescent adhesive in it to the dispensing head for dispensing. A suction force is generated in the second pressure chamber, drawing the fluorescent adhesive from the receiving chamber into the second pressure chamber. Therefore, by alternating between the first and second states during dispensing, continuous dispensing can be performed, improving dispensing efficiency. Furthermore, continuous operation avoids the dripping of fluorescent adhesive from the dispensing head due to gravity, further conserving fluorescent adhesive. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a structural diagram of the dispensing device of the on / off component in the first state of this utility model.

[0031] Figure 2 This is a structural diagram of the dispensing device of the on / off component in the second state of this utility model.

[0032] Figure 3 This is a schematic diagram of the dispensing device with fluorescent adhesive flow direction in the first state of the on / off component of this utility model.

[0033] Figure 4 This is a schematic diagram of the dispensing device with fluorescent adhesive flow direction in this utility model.

[0034] Figure 5 This is a schematic diagram of a traditional dispensing device.

[0035] The following labels in the attached diagram represent the following: 100, first adhesive tube; 101, receiving chamber; 102, second adhesive outlet; 200, base; 201, first pressure chamber; 202, second pressure chamber; 203, first adhesive passage; 204, second adhesive passage; 205, third adhesive passage; 206, fourth adhesive passage; 300, force generating mechanism; 301, first force generating component; 3011, first push rod; 302, second force generating component; 3021, second push rod; 400, dispensing head; 401, first adhesive inlet; 402, first adhesive outlet; 500, on / off component; 501, first valve body; 502, second valve body; 601, second adhesive tube; 602, third push rod; 603, third pressure chamber; 604, third valve body; 605, fourth valve body. Detailed Implementation

[0036] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0037] like Figure 5 The diagram shows the structure of a traditional dispensing device. During dispensing, the fourth valve body 605 is closed, the third valve body 604 is opened, and the third push rod 602 is pulled outwards, creating suction in the third pressure chamber 603. This suction draws the fluorescent adhesive from the second tube 601 into the third pressure chamber 603. Subsequently, the fourth valve body 605 is opened, the third valve body 604 is closed, and the third push rod 602 is pushed inwards, dispensing the fluorescent adhesive from the third pressure chamber 603 onto the workpiece. After the fluorescent adhesive in the pressure chamber 603 is dispensed, the fourth valve 605 is closed again, the third valve 604 is opened, and the third push rod 602 is pulled outward, creating suction in the third pressure chamber 603 to draw the fluorescent adhesive in the second tube 601 into the third pressure chamber 603. Then, the fourth valve 605 is opened, the third valve 604 is closed, and the third push rod 602 is pushed inward to dispense the fluorescent adhesive from the third pressure chamber 603 onto the workpiece. This dispensing operation is repeated. This dispensing device requires pausing the dispensing process, affecting efficiency. Furthermore, during pauses, the fluorescent adhesive in the dispensing head of traditional dispensing devices drips due to gravity. Therefore, after dispensing is completed, the adhesive needs to be drained to remove the gaps inside the dispensing head caused by dripping, resulting in wasted adhesive.

[0038] To address the aforementioned technical problems, this utility model provides a dispensing device. For example... Figure 1 , Figure 2 As shown, the dispensing device may include a dispensing head 400, a first glue tube 100, a base 200, and an on / off assembly 500.

[0039] The dispensing head 400 includes a first inlet 401 and a first outlet 402. When dispensing through the dispensing head 400, fluorescent adhesive enters through the first inlet 401 and flows through the first outlet 402 to the workpiece, which can be a bracket cup for LED beads. The first adhesive tube 100 has a receiving chamber 101 for holding the fluorescent adhesive and a second outlet 102 communicating with the receiving chamber 101. The base 200 has a first pressing chamber 201 communicating with the first inlet 401 and the second outlet 102, and a second pressing chamber 202 communicating with the first inlet 401 and the second outlet 102. The on / off component 500 is disposed on the base 200. The on / off component 500 includes a first state and a second state. In the first state, the connection between the first pressing chamber 201 and the second dispensing port 102 is in a connected state, and the connection between the first pressing chamber 201 and the first dispensing port 401 is in a disconnected state. The connection between the second pressing chamber 202 and the second dispensing port 102 is in a disconnected state, and the connection between the second pressing chamber 202 and the first dispensing port 401 is in a connected state. In the second state, the connection between the first pressing chamber 201 and the second dispensing port 102 is in a disconnected state, and the connection between the first pressing chamber 201 and the first dispensing port 401 is in a connected state. The connection between the second pressing chamber 202 and the second dispensing port 102 is in a connected state, and the connection between the second pressing chamber 202 and the first dispensing port 401 is in a disconnected state. A force generating mechanism 300 is disposed on the base 200. When the on / off component 500 is in the first state, the force generating mechanism 300 is used to generate suction in the first pressing chamber 201 and thrust in the second pressing chamber 202. When the on / off component 500 is in the second state, the force generating mechanism 300 is used to generate thrust in the first pressing chamber 201 and suction in the second pressing chamber 202.

[0040] Specifically, the first tubing 100 can be a cylindrical first tubing 100, wherein the receiving chamber 101 can be configured as a cylindrical chamber, and the second outlet 102 can be located at the bottom of the first tubing 100.

[0041] Specifically, when connecting the second glue outlet 102 and the first pressing chamber 201, a first glue passage 203 can be provided on the base 200, connecting the second glue outlet 102 and the first pressing chamber 201 through the first glue passage 203. When connecting the first pressing chamber 201 and the first glue inlet 401, a second glue passage 204 can be provided on the base 200, connecting the first pressing chamber 201 and the first glue inlet 401 through the second glue passage 204. When connecting the second glue outlet 102 and the second pressing chamber 202, a third glue passage 205 can be provided on the base 200, connecting the second glue outlet 102 and the second pressing chamber 202 through the third glue passage 205. When connecting the second pressing chamber 202 and the first glue inlet 401, a fourth glue passage 206 can be provided on the base 200 to connect the second pressing chamber 202 and the first glue inlet 401.

[0042] During dispensing, the second pressure chamber 202 can be filled with fluorescent adhesive first, and the on / off component 500 can be in the first state. The first pressure chamber 201 is connected to the second outlet 102, and disconnected from the first inlet 401. The second pressure chamber 202 is disconnected from the second outlet 102, and connected to the first inlet 401. At this time, a suction force is generated in the first pressure chamber 201, and the fluorescent adhesive in the receiving chamber 101 is drawn into the first pressure chamber 201. A thrust force is generated in the second pressure chamber 202, and the fluorescent adhesive in the second pressure chamber 202 is pressed to the dispensing head 400 for dispensing. Afterwards, the on / off component 500 is... When 00 is in the second state, the first pressing chamber 201 and the second dispensing port 102 are disconnected, the first pressing chamber 201 and the first dispensing port 401 are connected, the second pressing chamber 202 and the second dispensing port 102 are connected, and the second pressing chamber 202 and the first dispensing port 401 are disconnected. At this time, a thrust is generated in the first pressing chamber 201, and the fluorescent adhesive in the first pressing chamber 201 is pressed to the dispensing head 400 for dispensing. A suction force is generated in the second pressing chamber 202, and the fluorescent adhesive in the receiving chamber 101 is sucked into the second pressing chamber 202. This process is repeated, so that the on / off component 500 alternately repeats the first state and the second state, so that the dispensing device performs continuous dispensing operation.

[0043] It can be seen that the dispensing device can perform continuous dispensing operations, which improves dispensing efficiency. Furthermore, since continuous operation avoids the phenomenon of fluorescent adhesive dripping down the dispensing head 400 due to gravity, it further saves fluorescent adhesive.

[0044] In some embodiments, such as Figure 1 , Figure 2As shown, the on / off assembly 500 may include a first valve body 501 having a connection channel and a second valve body 502 having a connection channel; the first valve body 501 is disposed on the base 200 and located at the second glue outlet 102; the second valve body 502 is disposed on the base 200 and located at the first glue inlet 401; wherein, when the on / off assembly 500 is in the first state, the connection channel of the first valve body 501 connects the first glue pressing chamber 201 and the second glue outlet 102, the first valve body 501 disconnects the connection between the second glue pressing chamber 202 and the second glue outlet 102, and the second valve body 502 disconnects the first glue pressing chamber 202. The first valve body 501 connects the first pressure chamber 202 and the second glue outlet 102, and the connecting channel of the second valve body 502 connects the second pressure chamber 202 and the first glue inlet 401. When the on / off assembly 500 is in the second state, the first valve body 501 disconnects the connection between the first pressure chamber 201 and the second glue outlet 102, the connecting channel of the first valve body 501 connects the second pressure chamber 202 and the second glue outlet 102, the connecting channel of the second valve body 502 connects the first pressure chamber 201 and the second glue outlet 102, and the second valve body 502 disconnects the connection between the second pressure chamber 202 and the first glue inlet 401.

[0045] Specifically, the first valve body 501 is disposed on the second glue outlet 102, the first glue passage 203 is connected to the first valve body 501, and the third glue passage 205 is connected to the first valve body 501. The second valve body 502 is disposed on the first glue inlet 401, the second glue passage 204 is connected to the second valve body 502, and the fourth glue passage 206 is connected to the second valve body 502.

[0046] When the on / off component 500 is in the first state, the first glue passage 203 is connected to the second glue outlet 102 through the connecting channel of the first valve body 501, the second glue outlet 102 is disconnected from the third glue passage 205 through the first valve body 501, the second glue passage 204 is disconnected from the first glue inlet 401 through the second valve body 502, and the fourth glue passage 206 is connected to the first glue inlet 401 through the connecting channel of the second valve body 502. At this time, when a suction force is generated in the first pressing chamber 201, the fluorescent glue in the receiving chamber 101 can be drawn into the first pressing chamber 201. When a thrust force is generated in the second pressing chamber 202, the fluorescent glue in the second pressing chamber 202 is pressed to the dispensing head 400 for dispensing.

[0047] When the on / off component 500 is in the second state, the first glue passage 203 is disconnected from the second glue outlet 102 through the first valve body 501, the third glue outlet 102 is connected to the second glue outlet 102 through the connecting channel of the first valve body 501, the second glue passage 204 is connected to the first glue inlet 401 through the connecting channel of the second valve body 502, and the fourth glue passage 206 is disconnected from the first glue inlet 401 through the second valve body 502. At this time, when a thrust is generated in the first pressing chamber 201, the fluorescent glue in the first pressing chamber 201 is applied to the pressing head for dispensing. When a suction is generated in the second pressing chamber 202, the fluorescent glue in the receiving chamber 101 can be drawn into the second pressing chamber 202.

[0048] In some embodiments, the first valve body 501 may be a single-channel rotary valve or a dual-channel on / off valve.

[0049] Specifically, when the first valve body 501 is a single-channel rotary valve, when connecting the second glue outlet 102 and the first glue-pressing chamber 201, rotating the single-channel rotary valve counterclockwise connects the second glue outlet 102 and the first glue-passing channel 203 through the channel of the single-channel rotary valve. At this time, the second glue outlet 102 is connected to the first glue-pressing chamber 201, and the connection between the second glue outlet 102 and the second glue-pressing chamber 202 is broken. When connecting the second glue outlet 102 and the second glue-pressing chamber 202, rotating the single-channel rotary valve clockwise connects the second glue outlet 102 and the third glue-passing channel 205 through the channel of the single-channel rotary valve. At this time, the second glue outlet 102 is connected to the second glue-pressing chamber 202, and the connection between the second glue outlet 102 and the first glue-pressing chamber 201 is broken.

[0050] When the first valve body 501 is a dual-channel switching valve, the inlet end of one channel of the dual-channel switching valve is connected to the second glue outlet 102, and the outlet end of this channel is connected to one end of the first glue passage 203. The inlet end of the other channel of the dual-channel switching valve is connected to the second glue outlet 102, and the outlet end of this channel is connected to one end of the third glue passage 205. When connecting the second glue outlet 102 and the first glue pressing chamber 201, simply open the channel on the dual-channel switching valve connected to the first glue passage 203. When disconnecting the connection between the second glue outlet 102 and the first glue pressing chamber 201, simply close the channel on the dual-channel switching valve connected to the first glue passage 203. When connecting the second glue outlet 102 and the second glue pressing chamber 202, simply open the channel on the dual-channel switch valve connected to the third glue passage 205. When disconnecting the connection between the second glue outlet 102 and the second glue pressing chamber 202, simply close the channel on the dual-channel switch valve connected to the third glue passage 205.

[0051] In some embodiments, the second valve body 502 is a single-channel rotary valve or a dual-channel on / off valve.

[0052] Specifically, when the second valve body 502 is a single-channel rotary valve, when connecting the first glue inlet 401 and the first glue pressing chamber 201, rotating the single-channel rotary valve clockwise connects the first glue inlet 401 and the second glue passage 204 through the channel of the single-channel rotary valve. At this time, the first glue inlet 401 and the first glue pressing chamber 201 are connected, and the connection between the first glue inlet 401 and the second glue pressing chamber 202 is broken. When connecting the first glue inlet 401 and the second glue pressing chamber 202, rotating the single-channel rotary valve counterclockwise connects the first glue inlet 401 and the fourth glue passage 206 through the channel of the single-channel rotary valve. At this time, the first glue inlet 401 and the second glue pressing chamber 202 are connected, and the connection between the first glue inlet 401 and the first glue pressing chamber 201 is broken.

[0053] When the second valve body 502 is a dual-channel switching valve, the inlet end of one channel of the dual-channel switching valve is connected to one end of the second glue-passing channel 204, and the outlet end of this channel is connected to the first glue inlet 401. The inlet end of the other channel of the dual-channel switching valve is connected to the fourth glue-passing channel 206, and the outlet end of this channel is connected to the first glue inlet 401. When connecting the first glue-pressing chamber 201 and the first glue inlet 401, simply open the channel on the dual-channel switching valve connected to the second glue-passing channel 204. When disconnecting the connection between the first glue-pressing chamber 201 and the first glue inlet 401, simply close the channel on the dual-channel switching valve connected to the second glue-passing channel 204. When connecting the second pressing chamber 202 and the first glue inlet 401, simply open the channel on the dual-channel switch valve connected to the fourth glue passage 206. When disconnecting the connection between the second pressing chamber 202 and the first glue inlet 401, simply close the channel on the dual-channel switch valve connected to the fourth glue passage 206.

[0054] In a preferred embodiment, the first valve body 501 is a single-channel rotary valve, and the second valve body 502 is also a single-channel rotary valve. The single-channel rotary valve is simple and convenient to use.

[0055] In some embodiments, such as Figure 1 , Figure 2 As shown, the first pressing chamber 201 and the second pressing chamber 202 are symmetrically arranged, and the distance from the first pressing chamber 201 to the second glue outlet 102 is equal to the distance from the second pressing chamber 202 to the second glue outlet 102. The distance from the first pressing chamber 201 to the first glue inlet 401 is equal to the distance from the second pressing chamber 202 to the first glue inlet 401.

[0056] Specifically, when the first pressing chamber 201 is set, the first pressing chamber 201 and the second pressing chamber 202 are set at approximately a 45° angle to the vertical line, and the volume of the first pressing chamber 201 is equal to the volume of the second pressing chamber (the first pressing chamber 201 and the second pressing chamber 202 are set as two chambers of the same specifications). The distance from the second glue outlet 102 to the first pressing chamber 201 is equal to the distance from the second glue outlet 102 to the second pressing chamber 202 (the first glue passage 203 and the third glue passage 205 can be set as two channels of the same specifications and symmetrically arranged). The distance from the first pressing chamber 201 to the first glue inlet 401 is equal to the distance from the second pressing chamber 202 to the first glue inlet 401 (the second glue passage 204 and the fourth glue passage 206 can be set as two channels of the same specifications and symmetrically arranged).

[0057] In this embodiment, since the first pressing chamber 201 and the second pressing chamber 202 are symmetrically arranged, and the distance from the first pressing chamber 201 to the first glue inlet 401 is equal to the distance from the second pressing chamber 202 to the first glue inlet 401, and the distance from the second glue outlet 102 to the first pressing chamber 201 is equal to the distance from the second glue outlet 102 to the second pressing chamber 202, it is possible to achieve uniform glue dispensing in the first pressing chamber 201 and the second pressing chamber 202, and consistent length of the extruded fluorescent glue.

[0058] In some embodiments, such as Figure 1 , Figure 2 As shown, the force generating mechanism 300 may include a first force generating component 301 and a second force generating component 302. The first force generating component 301 is disposed on the base 200. When the on / off component 500 is in a first state, the first force generating component 301 is used to generate suction in the first pressing chamber 201. When the on / off component 500 is in a second state, the first force generating component 301 is used to generate thrust in the first pressing chamber 201. The second force generating component 302 is disposed on the base 200. When the on / off component 500 is in the first state, the second force generating component 302 is used to generate thrust in the second pressing chamber 202. When the on / off component 500 is in the second state, the second force generating component 302 is used to generate suction in the second pressing chamber 202.

[0059] In some embodiments, such as Figure 1 , Figure 2 As shown, the first force generating component 301 may include a first push rod 3011, the outer side wall of the first push rod 3011 slidingly abutting against the inner side wall of the first pressing chamber 201, so that the first push rod 3011 is sealed to the first pressing chamber 201.

[0060] Specifically, the first pressing chamber 201 can be a cylindrical pressing chamber, and correspondingly, the first push rod 3011 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 outer wall of the first push rod 3011 can abut against the inner wall of the first pressing chamber 201, so that the first push rod 3011 can achieve a sealing effect while being pushed and pulled in the first pressing chamber 201.

[0061] In this embodiment, since the first push rod 3011 is slidably disposed within the first adhesive pressing chamber 201 and forms a circumferential seal with the first adhesive pressing chamber 201, a suction force is generated within the first adhesive pressing chamber 201 when the first push rod 3011 is pulled outward, and a thrust force is generated within the first adhesive pressing chamber 201 when the first push rod 3011 is pushed inward. When the first push rod 3011 is pulled outward, the second adhesive outlet 102 is connected to the first adhesive pressing chamber 201, and the connection between the first adhesive pressing chamber 201 and the first adhesive inlet 401 is broken, so the fluorescent adhesive in the receiving chamber 101 can be drawn into the first adhesive pressing chamber 201. When the first push rod 3011 is pushed inward, the connection between the second glue outlet 102 and the first glue pressing chamber 201 is broken, and the first glue pressing chamber 201 is connected to the first glue inlet 401. Then, the fluorescent glue in the first glue pressing chamber 201 can be pressed by the glue dispensing head 400 for dispensing.

[0062] In some embodiments, such as Figure 1 , Figure 2 As shown, the second force generating component 302 may include a second push rod 3021, the outer side wall of the second push rod 3021 slidingly abutting against the inner side wall of the second pressure chamber 202, so that the second push rod 3021 is sealed to the second pressure chamber 202.

[0063] Specifically, the second pressing chamber 202 can be a cylindrical pressing chamber, and correspondingly, the second push rod 3021 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 outer wall of the second push rod 3021 can abut against the inner wall of the second pressing chamber 202, so that the second push rod 3021 can achieve a sealing effect while being pushed and pulled in the first pressing chamber 201.

[0064] In this embodiment, since the second push rod 3021 is movably mounted on the first housing and forms a circumferential seal with the first pressure-adhesion chamber 201, when the first push rod 3021 is pulled outward, a suction force is generated in the first pressure-adhesion chamber 201; when the first push rod 3021 is pushed inward, a thrust force is generated in the first pressure-adhesion chamber 201. When the first push rod 3021 is pulled outward, the second glue outlet 102 is connected to the first pressure-adhesion chamber 201, and the connection between the first pressure-adhesion chamber 201 and the first glue inlet 401 is broken, so the fluorescent adhesive in the receiving chamber 101 can be drawn into the first pressure-adhesion chamber 201. When the first push rod 3021 is pushed inward, the connection between the second glue outlet 102 and the first pressure-adhesion chamber 201 is broken, and the first pressure-adhesion chamber 201 is connected to the first glue inlet 401, so the fluorescent adhesive in the first pressure-adhesion chamber 201 can be pressed against the dispensing head 400 for dispensing.

[0065] like Figure 3 , Figure 4 As shown, during dispensing, the dispensing device is mounted on a dispensing machine. By adjusting the first push rod 3011 and the second push rod 3021, the first pressing chamber 201 is filled with fluorescent adhesive, while the second pressing chamber 202 is not filled with fluorescent adhesive. The second push rod 3021 is positioned at the bottom of the second pressing chamber 202. The dispensing machine pushes the first push rod 3011 inward and pulls the second push rod 3021 outward. At this time, the thrust generated by the first push rod 3011 in the first pressing chamber 201 propels the fluorescent adhesive from the first pressing chamber 201 to the workpiece through the dispensing head 400. The second push rod 3021 in the second pressing chamber 202... The suction generated in chamber 02 draws the fluorescent adhesive from the receiving chamber 101 into the second pressing chamber 202. After the fluorescent adhesive in the first pressing chamber 201 is exhausted, the dispensing machine pushes the second push rod 3021 inward and pulls the first push rod 3011 outward. At this time, the first push rod 3011 generates suction in the first pressing chamber 201 to draw the fluorescent adhesive from the receiving chamber 101 into the first pressing chamber 201. The second push rod 3021 generates thrust in the second pressing chamber 202 to apply the fluorescent adhesive from the second pressing chamber 202 to the workpiece through the dispensing head 400. The first push rod 3011 and the second push rod 3021 are repeated in sequence to achieve continuous dispensing.

[0066] It should be noted that when the first push rod 3011 generates a pushing force in the first pressing chamber 201, the connection between the second glue outlet 102 and the first pressing chamber 201 needs to be disconnected, and the first pressing chamber 201 is connected to the first glue inlet 401. When the second push rod 3021 generates a suction force in the second pressing chamber 202, the second glue outlet 102 is connected to the second pressing chamber 202, and the connection between the second pressing chamber 202 and the first glue inlet 401 is disconnected. Conversely, when the first push rod 3011 generates suction in the first pressing chamber 201, the second glue outlet 102 is connected to the first pressing chamber 201, and the first pressing chamber 201 is disconnected from the first glue inlet 401. When the second push rod 3021 generates thrust in the second pressing chamber 202, the connection between the second pressing chamber 202 and the second glue outlet 102 is broken, and the second pressing chamber 202 is connected to the first glue inlet 401.

[0067] In summary, this utility model provides a dispensing device with the following advantages:

[0068] When dispensing, the on / off component 500 alternates between the first and second states to perform continuous dispensing, which improves dispensing efficiency. Furthermore, since continuous operation avoids the phenomenon of fluorescent adhesive dripping from the dispensing head 400 due to gravity, it further saves fluorescent adhesive.

[0069] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A dispensing device, characterized in that, include: Dispensing head, including the first dispensing inlet; The first tube is provided with a receiving chamber for holding fluorescent adhesive and a second outlet communicating with the receiving chamber; The base is provided with a first pressing chamber communicating with the first glue inlet and the second glue outlet, and a second pressing chamber communicating with the first glue inlet and the second glue outlet; An on / off component is disposed on the base. The on / off component includes a first state and a second state. In the first state, the connection between the first glue-pressing chamber and the second glue outlet is in a connected state, and the connection between the first glue-pressing chamber and the first glue inlet is in a disconnected state. The connection between the second glue-pressing chamber and the second glue outlet is in a disconnected state, and the connection between the second glue-pressing chamber and the first glue inlet is in a connected state. In the second state, the connection between the first glue-pressing chamber and the second glue outlet is in a disconnected state, and the connection between the first glue-pressing chamber and the first glue inlet is in a connected state. The connection between the second glue-pressing chamber and the second glue outlet is in a connected state, and the connection between the second glue-pressing chamber and the first glue inlet is in a disconnected state. A force generating mechanism is disposed on the base, wherein, when the on / off component is in the first state, the force generating mechanism is used to generate suction in the first pressing chamber and thrust in the second pressing chamber; when the on / off component is in the second state, the force generating mechanism is used to generate thrust in the first pressing chamber and suction in the second pressing chamber.

2. The dispensing device according to claim 1, characterized in that, The on / off component includes: A first valve body having a connection channel is disposed on the base and located at the second dispensing port; A second valve body with a connection channel is disposed on the base and located at the first glue inlet; Wherein, when the on / off component is in the first state, the connection channel of the first valve body connects the connection path between the first pressing chamber and the second dispensing port, the first valve body disconnects the connection path between the second pressing chamber and the second dispensing port, the second valve body disconnects the connection path between the first pressing chamber and the second dispensing port, and the connection channel of the second valve body connects the connection path between the second pressing chamber and the first dispensing port. When the on / off component is in the second state, the first valve body disconnects the connection between the first pressing chamber and the second dispensing port, the connection channel of the first valve body connects the connection between the second pressing chamber and the second dispensing port, the connection channel of the second valve body connects the connection between the first pressing chamber and the second dispensing port, and the second valve body disconnects the connection between the second pressing chamber and the first dispensing port.

3. The dispensing device according to claim 2, characterized in that, The first valve body is a single-channel rotary valve or a dual-channel on / off valve.

4. The dispensing device according to claim 2, characterized in that, The second valve body is a single-channel rotary valve or a dual-channel on / off valve.

5. The dispensing device according to claim 1, characterized in that, The first and second pressing chambers are symmetrically arranged, and the distance from the first pressing chamber to the second glue outlet is equal to the distance from the second pressing chamber to the second glue outlet, and the distance from the first pressing chamber to the first glue inlet is equal to the distance from the second pressing chamber to the first glue inlet.

6. The dispensing device according to claim 1, characterized in that, The force generating mechanism includes: A first force generating component is disposed on the base. When the on / off component is in the first state, the first force generating component is used to generate suction in the first pressing chamber. When the on / off component is in the second state, the first force generating component is used to generate thrust in the first pressing chamber. A second force generating component is disposed on the base. When the on / off component is in the first state, the second force generating component is used to generate a thrust in the second pressing chamber. When the on / off component is in the second state, the second force generating component is used to generate a suction in the second pressing chamber.

7. The dispensing device according to claim 6, characterized in that, The first force generating component includes: The first push rod has its outer side wall sliding against the inner side wall of the first pressing chamber, so that the first push rod is in sealed contact with the first pressing chamber.

8. The dispensing device according to claim 6, characterized in that, The second force generating component includes: The second push rod has its outer side wall sliding against the inner side wall of the second pressing chamber, so that the second push rod is in sealed contact with the second pressing chamber.

9. The dispensing device according to claim 1, characterized in that, The first tubing is disposed on the base.

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