Auxiliary glue discharging structure and glue dispensing device

Abstract

The application relates to the technical field of packaging box manufacturing, in particular to an auxiliary glue discharging structure and a glue dispensing device. The application provides an auxiliary glue discharging structure, which comprises a base, a glue gun mounting portion and a guide portion connected to the base, the glue gun mounting portion being used for connecting a glue gun; a moving piece having a moving degree of freedom relative to the guide portion in a first direction; a glue discharging assembly comprising a pressing piece and a glue discharging piece, the glue discharging piece being connected to the moving piece, and the pressing piece being used for being connected to the glue gun; the pressing piece is inserted into the glue discharging piece and forms a glue containing cavity with the glue discharging piece, the glue discharging piece has a moving degree of freedom relative to the pressing piece in the first direction, the glue discharging piece is provided with a plurality of glue discharging holes in communication with the glue containing cavity, and the pressing piece is provided with a channel in communication with the glue containing cavity; and an elastic piece is arranged between the base and the moving piece in the first direction and connected to the base and the moving piece. The auxiliary glue discharging structure provided by the application can reduce the amount of glue used and improve the sticking reliability under the premise of meeting the glue spreading requirement.

Description

Technical Field

[0001] This application relates to the field of packaging box manufacturing technology, and in particular to an auxiliary glue dispensing structure and glue dispensing device. Background Technology

[0002] In the field of mobile phone packaging box assembly, the glue dispensing device is a key piece of equipment for bonding and fixing the various sub-components of the packaging box. The glue dispensing device usually includes a glue gun, which dispenses dots of glue at fixed points on the sub-components through its dispensing end. The glue spreads into a bonding surface that meets the requirements through subsequent pressing steps, thereby achieving bonding and fixing between the various sub-components.

[0003] However, in order to meet the requirements for glue diffusion, the amount of glue dispensed at the end of the glue gun is currently large. After pressing, the glue remains wet and slippery, resulting in poor adhesion between sub-components and making them prone to mold growth, thus affecting the reliability of the adhesion. Utility Model Content

[0004] This application provides an auxiliary glue dispensing structure and a glue dispensing device, which can reduce the amount of glue used and improve the bonding reliability while meeting the glue diffusion requirements.

[0005] To achieve the above objectives, the technical solution of this application is as follows:

[0006] In a first aspect, this application provides an auxiliary glue dispensing structure, comprising: a base, including a glue gun mounting portion and a guide portion connected to each other, the glue gun mounting portion being used to connect a glue gun, and the guide portion extending along a first direction; a movable member, disposed on the base and movably connected to the guide portion, the movable member having a degree of freedom of movement relative to the guide portion along the first direction; a glue dispensing assembly, disposed on the movable member, the glue dispensing assembly including a squeezing member and a glue dispensing member, the glue dispensing member being connected to the movable member, the squeezing member being used to connect to the glue gun; the squeezing member being inserted into the glue dispensing member and forming a glue-containing cavity between the glue dispensing member and the glue dispensing member, the glue dispensing member having a degree of freedom of movement relative to the squeezing member along the first direction, the glue dispensing member having a plurality of glue dispensing holes communicating with the glue-containing cavity, and the squeezing member having a channel communicating with the glue-containing cavity; and an elastic member, extendable and retractable along the first direction and connected between the base and the movable member.

[0007] In one possible implementation, the auxiliary dispensing structure provided in this application has a dispensing hole diameter greater than or equal to 0.3 mm and less than or equal to 0.5 mm; and / or, the distance between two adjacent dispensing holes is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0008] In one possible implementation, the auxiliary dispensing structure provided in this application further includes a machine mounting section, which includes multiple enclosures. The multiple enclosures and the glue gun mounting section are connected to form a through-hole movable cavity. At least a portion of the movable member is located in the movable cavity, and there is a predetermined gap between the movable member and the inner wall of the machine mounting section.

[0009] In one possible implementation, the auxiliary dispensing structure provided in this application includes a dispensing component comprising a side plate and a dispensing base plate connected to the side plate. The side plate and the dispensing base plate form an accommodating cavity with an opening. At least a portion of the extruder is located in the accommodating cavity and is slidably connected to the side plate. The side plate is connected to a moving component. A plurality of dispensing holes are located on the dispensing base plate and are disposed through the thickness of the dispensing base plate itself.

[0010] In one possible implementation, the auxiliary dispensing structure provided in this application includes an extrusion body and an elastic seal sleeved on the extrusion body. The extrusion body has a channel communicating with the dispensing cavity, and the elastic seal is located between the extrusion body and the side plate.

[0011] In one possible implementation, the auxiliary dispensing structure provided in this application has a boss on the side of the extrusion body facing the side plate, and the elastic seal includes multiple sealing parts, each of which is sleeved on the extrusion body and abuts against the boss in a first direction.

[0012] In one possible implementation, the auxiliary dispensing structure provided in this application has a guide portion having an annular cavity, which is disposed through in a first direction; one end of the elastic member is fixedly connected to the base, and the other end is fixedly connected to the movable member, at least a portion of the movable member is located in the annular cavity and is slidably connected to the inner wall of the guide portion.

[0013] In one possible implementation, the auxiliary dispensing structure provided in this application further includes a guide post, which is connected to the base, and a movable member is slidably connected to the guide portion, with the side of the movable member facing the guide post being slidably connected to the guide post; an elastic member is sleeved on the guide post and abuts against the base and the movable member; wherein, one of the guide portion and the movable member has a slide rail, and the other has a slider that matches the slide rail.

[0014] In one possible implementation, the auxiliary dispensing structure provided in this application includes an elastic element comprising one of a helical spring, a compression spring, a wave spring, and an elastic rubber column.

[0015] Secondly, this application provides a dispensing device, including a machine body, a glue gun connected to the machine body, and the aforementioned auxiliary dispensing structure, wherein the auxiliary dispensing structure is connected to the glue gun.

[0016] The auxiliary dispensing structure and dispensing device provided in this application include a base, a movable component, a dispensing assembly, and an elastic component. The base includes a glue gun mounting portion and a guide portion connected together. The glue gun mounting portion is used to connect the glue gun. The movable component is disposed on the base and movably connected to the guide portion. The guide portion provides guidance for the movable component. The elastic component is telescopically disposed along a first direction and connected between the base and the movable component, so that the movable component can move relative to the guide portion along the first direction. The dispensing assembly includes a squeezing component and a dispensing component. The dispensing component is connected to the movable component, and the squeezing component is used to connect to the glue gun. The dispensing component has multiple dispensing holes communicating with a glue-containing cavity, and the squeezing component has a channel communicating with the glue-containing cavity. As the glue gun moves the extrusion nozzle toward the part to be glued, the dispensing nozzle first contacts the part and stops moving due to its obstruction. Meanwhile, the extrusion nozzle continues to move along the first direction with the glue gun, causing a relative displacement between it and the dispensing nozzle. The volume of the glue-containing cavity decreases as the extrusion nozzle penetrates deeper, allowing the glue entering the cavity through the channel to be evenly extruded through the dispensing holes under the pressure of the extrusion nozzle. Multiple dispensing holes simultaneously extrude small amounts of glue, which spread and combine to form the target bonding surface. This reduces the amount of glue used, lowers the probability of slipperiness and mold growth due to excessive glue, and thus improves bonding reliability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the auxiliary dispensing structure provided in the embodiments of this application;

[0019] Figure 2 for Figure 1 Another perspective illustration;

[0020] Figure 3 for Figure 1 Another perspective illustration;

[0021] Figure 4 for Figure 3 A sectional view of section AA in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the guide section provided in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10-Auxiliary glue dispensing structure;

[0025] 100 - Base; 110 - Glue gun mounting part; 120 - Guide part; 121 - Annular cavity;

[0026] 200 - Moving parts;

[0027] 300 - Dispensing assembly; 310 - Extrusion part; 311 - Channel; 312 - Extrusion body; 313 - Elastic seal; 313a - Sealing part; 314 - Boss part; 320 - Dispensing part; 321 - Dispensing hole; 322 - Side plate; 323 - Dispensing base plate; 324 - Receiving cavity; 330 - Glue receiving cavity;

[0028] 400 - Elastic component;

[0029] 500 - Machine mounting section; 510 - Enclosure panel; 520 - Moving cavity;

[0030] 600-Guide column;

[0031] 20-Glue Gun;

[0032] X - First direction.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the preferred embodiments of this application will be described in more detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] It should be noted that in the description of the embodiments of this application, the terms "upper", "lower", "inner", "outer" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0036] Furthermore, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In the field of mobile phone packaging box assembly, the glue dispensing device is a key piece of equipment for bonding and fixing the various sub-components of the packaging box. The glue dispensing device usually includes a glue gun, which dispenses dots of glue at fixed points on the sub-components through its dispensing end. The glue spreads into a bonding surface that meets the requirements through subsequent pressing steps, thereby achieving bonding and fixing between the various sub-components.

[0039] However, in order to meet the requirements for glue diffusion, the amount of glue dispensed at the end of the glue gun is currently large. After pressing, the glue remains wet and slippery, resulting in poor adhesion between sub-components and making them prone to mold growth, thus affecting the reliability of the adhesion.

[0040] In view of this, the present application provides an auxiliary dispensing structure and a dispensing device. The auxiliary dispensing structure includes a base, a movable member, a dispensing assembly, and an elastic member. The base includes a glue gun mounting part and a guide part connected together. The glue gun mounting part is used to connect the glue gun. The movable member is disposed on the base and movably connected to the guide part. The guide part is used to provide guidance for the movable member. The elastic member is telescopically disposed along a first direction and connected between the base and the movable member, so that the movable member can move relative to the guide part along the first direction. The dispensing assembly includes a squeezing member and a dispensing member. The dispensing member is connected to the movable member, and the squeezing member is used to connect to the glue gun. The dispensing member has multiple dispensing holes communicating with the glue cavity, and the squeezing member has a channel communicating with the glue cavity. As the glue gun moves the extrusion nozzle toward the part to be glued, the dispensing nozzle first contacts the part and stops moving due to its obstruction. Meanwhile, the extrusion nozzle continues to move along the first direction with the glue gun, causing a relative displacement between it and the dispensing nozzle. The volume of the glue-containing cavity decreases as the extrusion nozzle penetrates deeper, allowing the glue entering the cavity through the channel to be evenly extruded through the dispensing holes under the pressure of the extrusion nozzle. Multiple dispensing holes simultaneously extrude small amounts of glue, which spread and combine to form the target bonding surface. This reduces the amount of glue used, lowers the probability of slipperiness and mold growth due to excessive glue, and thus improves bonding reliability.

[0041] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] See Figure 1 , Figure 2 and Figure 4 This application provides an auxiliary glue dispensing structure 10, including a base 100, a movable member 200, a glue dispensing assembly 300, and an elastic member 400. The base 100 includes a glue gun mounting portion 110 and a guide portion 120 connected together. The glue gun mounting portion 110 is used to connect a glue gun 20, and the guide portion 120 extends along a first direction X. The movable member 200 is disposed on the base 100 and movably connected to the guide portion 120, and the movable member 200 has a degree of freedom of movement relative to the guide portion 120 along the first direction X. The glue dispensing assembly 300 is disposed on the movable member 200, and the glue dispensing assembly 300 includes a squeezing member 310 and a glue dispensing member 320. The glue dispensing member 320 is connected to the movable member 200, and the squeezing member 310 is used to connect to the glue gun 20. The extrusion member 310 is inserted into the dispensing member 320 and forms a dispensing cavity 330 between them. The dispensing member 320 has a degree of freedom of movement relative to the extrusion member 310 along the first direction X. The dispensing member 320 has multiple dispensing holes 321 communicating with the dispensing cavity 330. The extrusion member 310 has a channel 311 communicating with the dispensing cavity 330. The elastic member 400 is telescopically disposed along the first direction X and connected between the base 100 and the moving member 200.

[0043] It should be noted that the base 100 may include a glue gun mounting part 110 and a guide part 120. The glue gun mounting part 110 can be detachably connected to the glue gun 20 via threaded connection, snap-fit ​​connection, flange connection, etc. Taking the threaded connection as an example, the glue gun mounting part 110 may include a plate-shaped part with threaded holes. Bolts are passed through the glue gun mounting part 110 and the glue gun 20 in sequence, and tightened by rotation to achieve a stable connection between the glue gun mounting part 110 and the glue gun 20, so as to prevent the glue gun 20 from shaking during glue dispensing.

[0044] The guide portion 120 extends along a first direction X, where the first direction X can be understood as a vertical direction, or as the up-down or height direction of the glue gun 20. Optionally, the guide portion 120 may be provided with a guide rail or a groove. For example, the guide portion 120 may be provided with a cuboid guide rail with protruding ridges to ensure the smoothness and mobility of the moving part 200 when it moves along the first direction X.

[0045] Understandably, in order to achieve relative sliding between the movable member 200 and the guide portion 120 in the first direction X, the movable member 200 may be provided with a sliding structure that matches the guide portion 120. Optionally, a groove matching the protrusion of the guide portion 120 may be provided on the side of the movable member 200 facing the guide portion 120, thereby allowing the movable member 200 to slide along the first direction X on the guide portion 120. Thus, when no external force is applied to the guide portion 120 or the movable member 200, the movable member 200 can be in its initial position relative to the guide portion 120. When driven by an external force, relative movement can occur between the guide portion 120 and the movable member 200.

[0046] The dispensing assembly 300 may include an extruder 310 and a dispensing component 320. One end of the extruder 310 is connected to the dispensing nozzle of the glue gun 20. Optionally, the extruder 310 can be connected to the glue gun 20 via a plug-in or threaded connection. For example, the extruder 310 may include a plug-in portion with a sealing ring, forming an interference fit with the groove of the dispensing nozzle of the glue gun 20, thereby reducing the probability of glue leakage during transmission. The other end of the extruder 310 is plugged into the dispensing component 320. In the first direction X, a preset distance may be provided between the bottom of the extruder 310 and the dispensing component 320 so that the extruder 310 and the dispensing component 320 together enclose a glue-containing cavity 330. The dispensing component 320 and the extruder 310 can move toward or away from each other in the first direction X, thereby adjusting the volume of the glue-containing cavity 330.

[0047] In a specific implementation, the dispensing component 320 is provided with a plurality of dispensing holes 321 communicating with the adhesive cavity 330. Optionally, the diameter, number, and arrangement of the dispensing holes 321 can be set according to the actual dispensing requirements. For example, the dispensing holes 321 can be distributed in a ring array on the dispensing component 320 to achieve uniform dispensing, thereby forming a circular bonding surface. The embodiments of this application are not limited herein.

[0048] The extruder 310 has a channel 311 inside that communicates with the glue-containing cavity 330. The cross-sectional shape of the channel 311 can be set to a circle, a square, etc., to introduce glue from the glue gun 20 into the glue-containing cavity 330.

[0049] It should also be noted that the auxiliary dispensing structure 10 may further include an elastic element 400, which is telescopically disposed between the base 100 and the movable element 200 along the first direction X. Optionally, the elastic element 400 may include a spring, an elastic rubber column, etc., one end of which may be connected to the glue gun mounting part 110 of the base 100, and the other end connected to the movable element 200. When the movable element 200 moves along the first direction X, the elastic element 400 is compressed or stretched, storing elastic potential energy; when the external driving force disappears, the elastic element 400 releases the potential energy, pushing the movable element 200 to reset, thereby realizing automatic control of the dispensing process.

[0050] In the actual dispensing process, when the glue gun 20 moves the auxiliary dispensing structure 10 toward the part to be dispensed, the dispensing component 320 first contacts the part and stops moving due to its obstruction. Meanwhile, the extrusion component 310 continues to move along the first direction X with the glue gun 20, causing a relative displacement between the extrusion component 310 and the dispensing component 320. The elastic component 400 is gradually compressed to store elastic potential energy. The volume of the glue-containing cavity 330 decreases due to the deepening of the extrusion component 310, so that the glue entering the glue-containing cavity 330 through the channel 311 is evenly extruded through each dispensing hole 321 under the extrusion force of the extrusion component 310. Multiple dispensing holes 321 simultaneously extrude a small amount of glue, which extends and merges to form the target bonding surface. Thus, the target bonding surface can be formed without reserving glue diffusion margin, thereby reducing the amount of glue used and reducing the probability of wetness and mold due to excessive glue, thereby improving bonding reliability. When the dispensing work is completed, the glue gun 20 moves the auxiliary dispensing structure 10 away from the part to be dispensed, and the elastic element 400 releases its elastic potential energy, pushing the moving part 200 and the dispensing part 320 to reset, thereby stopping the dispensing.

[0051] The parts to be glued can include packaging boxes, etc. The target bonding surface can be understood as the bonding surface that meets the requirements for glue diffusion.

[0052] It should be noted that in this application, the target bonding surface can be achieved by extruding and molding the adhesive through the interaction between the extruder 310 and the dispensing part 320. Compared to the related technology where adhesive is dispensed in dots through a glue gun 20, and the adhesive diffuses into a suitable bonding surface through subsequent pressing steps, the auxiliary dispensing structure 10 provided in this application can reduce the amount of adhesive used, reduce the probability of slippage and mold growth due to excessive adhesive, thereby improving bonding reliability. In addition, the auxiliary dispensing structure 10 provided in this application can also save the intermediate pressing and diffusion process, effectively improving production efficiency and simplifying the dispensing process.

[0053] Taking some mobile phone packaging box assembly lines as an example, the adhesive diffusion requirement is that the adhesive needs to be compressed and diffused outwards to form a circular pattern with a diameter greater than 35mm. In related technologies, adhesive dots are dispensed from a glue gun at 20 points. These dots need to diffuse laterally to form the target bonding surface. According to diffusion kinetics, the adhesive layer gradually thins as the adhesive diffuses from the center outwards, which can easily lead to insufficient adhesive at the edges of the target bonding surface. To ensure effective bonding, a margin for adhesive diffusion is required. In related technologies, 0.325g ± 0.1g of adhesive is needed to meet the requirement that the diameter of the target bonding surface is greater than 35mm. In this application, multiple dispensing holes 321 simultaneously extrude micro-volumes of adhesive, allowing the adhesive to contact and spread evenly with the parts to be bonded at multiple points simultaneously, forming a uniform adhesive layer without the need for additional adhesive to fill the edges of the target bonding surface. With the auxiliary dispensing structure of this application, only 0.1g ± 0.05g of glue is needed to meet the requirement that the diameter of the target bonding surface is greater than 35mm.

[0054] Furthermore, in related technologies, adhesive is dispensed in 20 dots using a glue gun. To meet diffusion requirements, a diffusion allowance is set. However, as the adhesive layer gradually thins from the center outwards, it eventually forms a bonding surface that is thicker in the center and thinner at the edges. This can cause excessively thick adhesive in some areas of the bonding surface, resulting in a slippery adhesive state, which hinders moisture evaporation, leads to poor bonding tightness, and easily induces mold growth. In this application, multiple glue dispensing holes 321 simultaneously extrude micro-volumes of adhesive, allowing the adhesive to contact and spread evenly with the parts to be bonded at multiple points simultaneously. The resulting bonding surface is more uniform than that formed by related technologies, and the adhesive layer is relatively thinner, thus facilitating moisture evaporation, reducing the probability of slipperiness and mold growth, and thereby improving bonding reliability.

[0055] See Figure 2 In some embodiments, the diameter of the dispensing hole 321 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

[0056] When the diameter of the dispensing hole 321 is set to be greater than 0.5mm, it is easy for glue to leak through the dispensing hole 321 in the non-dispensing state of the auxiliary dispensing structure 10, causing contamination of the non-dispensing area. In addition, it is also easy to cause excessive glue to flow out during the dispensing process, resulting in excessive glue output, which increases the probability of wetness and mold growth.

[0057] When the diameter of the dispensing hole 321 is set to less than 0.3mm, the adhesive has a certain viscosity, which increases the resistance when the adhesive flows through the dispensing hole 321. This results in a higher extrusion pressure being required to drive the adhesive to be extruded. Furthermore, fluctuations in extrusion pressure may cause discontinuous dispensing, affecting the integrity of the target bonding surface.

[0058] Therefore, the diameter of the glue outlet 321 can be set within the range of 0.3mm to 0.5mm, including the two extreme values ​​of 0.3mm and 0.5mm. This setting ensures that the glue flows smoothly through the glue outlet 321 under reasonable pressure, while also effectively controlling the flow range of the glue and reducing leakage.

[0059] In some alternative embodiments, the distance between two adjacent dispensing holes 321 is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0060] Understandably, the spacing between two adjacent glue dispensing holes 321 affects the molding quality of the target bonding surface. If the spacing between two adjacent glue dispensing holes 321 is greater than 2mm, the glue droplets extruded from each glue dispensing hole 321 will be too far apart on the surface of the part to be bonded. This can easily lead to the glue droplets not fully fusing to form a continuous and complete glue layer, resulting in blank areas not covered by glue between adjacent glue droplets. This reduces the effective contact area of ​​the bonding surface and thus affects the bonding strength.

[0061] If the spacing is less than 0.5mm, adjacent glue dots will fuse rapidly after extrusion due to surface tension, easily leading to glue accumulation and increasing the probability of slipperiness and mold growth. In addition, the excessively small spacing also increases the processing difficulty of the glue dispensing part 320. The thin-walled structure between adjacent glue dispensing holes 321 is prone to deformation or damage during long-term use, affecting the service life of the glue dispensing auxiliary structure.

[0062] Therefore, setting the spacing between two adjacent glue outlets 321 within the range of 0.5mm to 2mm, including the two extreme values ​​of 0.5mm and 2mm, ensures that the glue droplets extruded from each glue outlet 321 can fully fuse to form a continuous glue layer on the glue-to-apply surface, without causing bonding defects due to glue accumulation.

[0063] See Figure 1In some embodiments, the machine mounting part 500 is also included. The machine mounting part 500 includes a plurality of enclosures 510. The plurality of enclosures 510 and the glue gun mounting part 110 are connected to form a through-hole movable cavity 520. At least a portion of the movable member 200 is located in the movable cavity 520, and there is a predetermined gap between the movable member 200 and the inner wall of the machine mounting part 500.

[0064] It is understood that the enclosure panels 510 and the machine mounting section 500 and glue gun mounting section 110 can be securely connected by bolts or tenon joints to form a through-hole movable cavity 520. At least one of the enclosure panels 510 can be detachably connected to the machine body of the dispensing device by bolts, snap-fit ​​connections, or other means. This connection to the machine body improves the stability of the auxiliary dispensing structure 10 relative to the dispensing device, reducing the risk of shaking or detachment during use. The predetermined gap between the moving part 200 and the inner wall of the machine mounting section 500 provides space for the reciprocating movement of the moving part 200 along the guide section 120, while the enclosure panels 510 limit the lateral displacement of the moving part 200.

[0065] Optionally, the enclosure 510 of the machine mounting section 500 can be made of rigid materials, such as aluminum alloy or engineering plastics. This can protect the components (such as the moving part 200) inside the moving cavity 520, thereby improving the reliability and service life of the auxiliary dispensing structure 10.

[0066] See Figure 2 In some embodiments, the dispensing member 320 includes a side plate 322 and a dispensing base plate 323 connected to the side plate 322. The side plate 322 and the dispensing base plate 323 surround a receiving cavity 324 with an opening. At least a portion of the extruding member 310 is located in the receiving cavity 324 and is slidably connected to the side plate 322. The side plate 322 is connected to the moving member 200. A plurality of dispensing holes 321 are all located in the dispensing base plate 323, and the dispensing holes 321 are disposed through the thickness direction of the dispensing base plate 323 itself.

[0067] In a specific implementation, the dispensing component 320 may include a side plate 322 and a dispensing base plate 323. Optionally, the side plate 322 and the dispensing base plate 323 may be integrally molded, thereby facilitating the production and processing of the dispensing component 320. The side plate 322 may be annular, rectangular, or similar in shape; that is, the orthographic projection of the side plate 322 in the first direction X may be circular, rectangular, or similar in shape. Matching the side plate 322, the orthographic projection of the dispensing base plate 323 in the first direction X may be circular, rectangular, or similar in shape. Specifically, the configuration can be tailored to the dispensing requirements, and this embodiment does not impose any limitations on this.

[0068] The extrusion member 310 extends at least partially into the receiving cavity 324, and its outer wall forms a sliding fit with the inner wall of the side plate 322, ensuring that the extrusion member 310 slides stably relative to the side plate 322 along the first direction X, and ensuring the controllability of the volume change of the receiving cavity 330.

[0069] The outer side of the side plate 322 can be rigidly connected to the moving member 200 through a connecting structure (such as a connecting plate or connecting block), so that the two can form a synchronously moving whole. When the moving member 200 moves along the guide portion 120, the moving member 200 can drive the dispensing member 320 to move synchronously. The sliding connection between the extruder 310 and the side plate 322 allows the extruder 310 to move independently relative to the side plate 322 (and the dispensing base plate 323) under the drive of the glue gun 20. When the glue gun 20 drives the extruder 310 to penetrate deeper into the receiving cavity 324, the volume of the receiving cavity 330 formed by the extruder 310 and the dispensing member 320 gradually decreases, and the glue in the receiving cavity 330 gathers towards the dispensing base plate 323 under the action of extrusion force. When the dispensing member 320 is reset under the drive of the moving member 200, the volume of the receiving cavity 330 is restored, so that glue can be replenished through the channel 311.

[0070] Multiple dispensing holes 321 are evenly distributed on the dispensing base plate 323 and are arranged through the thickness of the dispensing base plate 323. The axis of the dispensing holes 321 can be set perpendicular to the part to be glued, so that the glue can act perpendicularly on the surface of the part to be glued when it is extruded, avoiding uneven bonding surface caused by tilted dispensing.

[0071] See Figure 3 and Figure 4 In some embodiments, the extrusion member 310 includes an extrusion body 312 and an elastic seal 313 sleeved on the extrusion body 312. The extrusion body 312 has a channel 311 communicating with the adhesive cavity 330, and the elastic seal 313 is located between the extrusion body 312 and the side plate 322.

[0072] It should be noted that the extruder 310 may include an extrusion body 312, which may include a rod-shaped portion and an extrusion platform connected to the rod-shaped portion. The channel 311 may extend through the rod-shaped portion and the extrusion platform. Optionally, the extrusion platform may include a rubber extrusion platform, the periphery of which abuts against the side plate 322. Thus, while extruding adhesive from the extruder 310, the sealing between the extruder 310 and the side plate 322 can be ensured. Alternatively, the extruder 310 may also include an elastic seal 313. For example, the elastic seal 313 may include a rubber ring, the inner diameter of which is interference-fitted with the outer diameter of the extrusion body 312, and the outer diameter of the elastic seal 313 forms a sealing contact with the inner wall of the side plate 322. When the extrusion body 312 slides relative to the side plate 322, the elastic seal 313 compensates for the small gap between the extrusion body 312 and the side plate 322 through its own elastic deformation. While maintaining the freedom of sliding, it effectively prevents the glue in the glue cavity 330 from leaking from the mating point between the extrusion body 312 and the side plate 322.

[0073] By sealing the glue-containing cavity 330 with an elastic seal 313, it is ensured that the extrusion force generated by the extruder 310 during movement is fully applied to the glue, preventing unstable glue output due to pressure leakage. When the glue gun 20 drives the extrusion body 312 deeper into the receiving cavity 324, the elastic seal 313 moves synchronously with the extrusion body 312. The pressure generated by the reduced volume of the glue-containing cavity 330 forces the glue to be evenly extruded from the glue outlet 321. When the glue outlet 320 returns to its original position under the action of the elastic element 400 and the moving part 200, the elastic seal 313, in conjunction with the channel 311, draws in glue, and the volume of the glue-containing cavity 330 recovers. Thus, through the dynamic sealing function of the elastic seal 313, the flow of glue in the glue-containing cavity 330 is ensured to be controllable, preventing glue leakage or glue pressure loss, thereby achieving stability and accuracy in glue output.

[0074] See Figure 4 In some embodiments, the extrusion body 312 is provided with a boss 314 on the side facing the side plate 322, and the elastic seal 313 includes a plurality of sealing parts 313a, each sealing part 313a being sleeved on the extrusion body 312 and abutting against the boss 314 in the first direction X.

[0075] To further improve sealing reliability, the extrusion body 312 may be provided with a boss portion 314. Optionally, the sealing portion 313a may include two portions, with the boss portion 314 located at the center of the extrusion body 312 along its thickness direction and surrounding the extrusion body 312. The two sealing portions 313a are located on opposite sides of the boss portion 314 along its thickness direction and are both fitted onto the extrusion body 312. The boss portion 314 serves as an axial positioning structure for the sealing portion 313a, restricting the movement of the sealing portion 313a in the first direction X, thereby preventing the sealing portion 313a from detaching from the extrusion body 312. Alternatively, the sealing portion 313a may also include three or more portions, which is not limited in this embodiment.

[0076] See Figure 5 In some embodiments, the guide portion 120 has an annular cavity 121 that extends through the guide portion 120 in a first direction X. One end of the elastic member 400 is fixedly connected to the base 100, and the other end is fixedly connected to the movable member 200. At least a portion of the movable member 200 is located within the annular cavity 121 and is slidably connected to the inner wall of the guide portion 120.

[0077] In other words, the guide portion 120 can adopt a hollow columnar structure, with an annular cavity 121 extending along the first direction X inside. The cross-section of the annular cavity 121 can be circular, square, or other shapes, specifically matching the cross-sectional shape of the moving member 200. At least a portion of the moving member 200 is embedded in the annular cavity 121, and the outer wall of the moving member 200 forms a sliding fit with the inner wall of the guide portion 120. For example, the guide portion 120 can be provided with longitudinal guide protrusions or grooves, and the moving member 200 can be provided with matching grooves or guide rails at corresponding positions, thereby ensuring that the moving member 200 can reciprocate along the first direction X and improving the movement accuracy.

[0078] The elastic element 400 has two rigid connections to the base 100 and the moving element 200, respectively. One end is fixed to the base 100 by bolts, clips, or an embedded structure, while the other end is fixedly connected to the moving element 200. When the elastic element 400 undergoes compression or tensile deformation, the moving element 200 moves along the first direction X within the annular cavity 121, and the elastic element 400 serves as the power source for elastic buffering and resetting. For example, when the glue gun 20 drives the extruder 310 to press down, the moving element 200 moves upward relative to the base 100 within the annular cavity 121 due to the resistance of the surface of the part to be glued, and the elastic element 400 is compressed and stores elastic potential energy. After dispensing is completed, the elastic potential energy is released, driving the moving element 200 to reset along the annular cavity 121, ensuring that the glue dispensing assembly 300 returns to its initial position.

[0079] The through-hole design of the annular cavity 121 and its sliding fit with the moving part 200 provide limiting support for the moving part 200, effectively reducing lateral swaying of the moving part 200 during movement or uneven force application. The fixing method at both ends of the elastic member 400 ensures that its axis is parallel to the first direction X, guaranteeing uniform transmission of elastic force along the first direction X and preventing torque deviation. Furthermore, the inner wall of the guide portion 120 and the outer wall of the moving part 200 can be coated with a lubricating coating to reduce frictional resistance and wear, thereby extending service life.

[0080] See Figure 4 In some alternative embodiments, the auxiliary dispensing structure 10 may further include a guide post 600 connected to the base 100, and a movable member 200 slidably connected to the guide portion 120, with the movable member 200 slidably connected to the guide post 600 on the side facing the guide post 600. An elastic member 400 is sleeved on the guide post 600 and abuts against the base 100 and the movable member 200. One of the guide portion 120 and the movable member 200 has a slide rail, and the other has a slider that matches the slide rail.

[0081] In a specific implementation, one end of the guide post 600 can be fixedly connected to the base 100 via a threaded connection, welding, or an embedded structure, and extends perpendicularly along the first direction X, providing support and guidance for the elastic element 400. The moving element 200 forms a sliding fit with the guide portion 120 and the guide post 600. Specifically, the side of the moving element 200 facing the guide portion 120 is provided with a slider that matches the guide portion 120 (or the guide portion 120 is provided with a slider and the moving element 200 is provided with a slide rail). The side of the moving element 200 facing the guide post 600 is provided with a guide hole or a sliding sleeve, forming a sliding connection with the outer peripheral surface of the guide post 600.

[0082] The elastic element 400 is sleeved outside the guide post 600 and abuts against the base 100 and the movable element 200. One end of the elastic element 400 is fixed to the base 100, and the other end is fixedly connected to the movable element 200. Thus, by setting the guide post 600, the extension and retraction direction of the elastic element 400 is limited to the first direction X, avoiding bending or torsional deformation caused by lateral forces and ensuring that the elastic potential energy is uniformly transmitted along the axial direction.

[0083] See Figure 1 In some embodiments, the elastic element 400 includes one of a helical spring, a compression spring, a wave spring, and an elastic rubber column.

[0084] Optionally, the elastic element 400 may include a helical spring, in which the coils deform in parallel during compression and tension, ensuring that the elastic force is concentrated and transmitted along the first direction X. Alternatively, the elastic element 400 may also include a compression spring, which can effectively buffer the impact force when the dispensing part 320 contacts the part to be dispensed. Alternatively, the elastic element 400 may also include a wave spring, which is composed of multiple annular thin sheets with alternating peaks and troughs. It has a small axial height and a high elastic modulus, which can reduce the axial installation space while ensuring the elastic force, making the auxiliary dispensing structure 10 more compact.

[0085] In addition, the elastic element 400 may also include an elastic rubber column made of highly elastic rubber material. The columnar structure may have a hollow channel 311 inside to adjust the elastic modulus and compression deformation. The fatigue resistance of the rubber material allows it to maintain stable elastic properties during high-frequency reciprocating motion, extending its service life.

[0086] Based on the above embodiments, this application provides a dispensing device, including a machine body, a glue gun 20 connected to the machine body, and an auxiliary dispensing structure 10 provided in any of the above embodiments, wherein the auxiliary dispensing structure 10 is connected to the glue gun 20.

[0087] The auxiliary dispensing structure 10 has been described in detail in the above embodiments and will not be repeated here.

[0088] It is understood that the auxiliary dispensing structure 10 may include a glue gun mounting part 110 and a machine mounting part 500. The glue gun mounting part 110 is detachably connected to the glue gun 20, and the machine mounting part 500 is connected to the machine body. This ensures the stability of the auxiliary dispensing structure 10 during use. By setting the auxiliary dispensing structure 10, the target bonding surface can be formed without reserving glue diffusion allowance, thereby reducing glue consumption and the probability of slippage and mold growth caused by excessive glue, thus improving bonding reliability.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An auxiliary glue dispensing structure, characterized in that, include: The base includes a glue gun mounting part and a guide part connected to each other, the glue gun mounting part being used to connect a glue gun, and the guide part extending along a first direction; A movable component is disposed on the base and movably connected to the guide portion, and the movable component has a degree of freedom of movement relative to the guide portion along the first direction; A glue dispensing assembly is disposed on the movable component. The glue dispensing assembly includes an extruder and a glue dispensing component. The glue dispensing component is connected to the movable component. The extruder is used to connect to a glue gun. The extruder is inserted into the glue dispensing component and forms a glue-containing cavity with the glue dispensing component. The glue dispensing component has a degree of freedom of movement relative to the extruder in the first direction. The glue dispensing component has a plurality of glue dispensing holes communicating with the glue-containing cavity. The extruder has a channel communicating with the glue-containing cavity. An elastic element is telescopically disposed along the first direction and connected between the base and the movable element.

2. The auxiliary dispensing structure according to claim 1, characterized in that, The diameter of the dispensing hole is greater than or equal to 0.3 mm and less than or equal to 0.5 mm; And / or, the distance between two adjacent dispensing holes is greater than or equal to 0.5 mm and less than or equal to 2 mm.

3. The auxiliary dispensing structure according to claim 1, characterized in that, It also includes a machine mounting section, which includes multiple enclosures. The multiple enclosures and the glue gun mounting section are connected to form a through-hole movable cavity. At least a portion of the movable member is located in the movable cavity, and there is a predetermined gap between the movable member and the inner wall of the machine mounting section.

4. The auxiliary dispensing structure according to claim 1, characterized in that, The dispensing component includes a side plate and a dispensing base plate connected to the side plate. The side plate and the dispensing base plate form an accommodating cavity with an opening. At least a portion of the extrusion component is located in the accommodating cavity and is slidably connected to the side plate. The side plate is connected to the moving component. The plurality of dispensing holes are all located on the dispensing base plate, and the dispensing holes are arranged through the thickness of the dispensing base plate itself.

5. The auxiliary dispensing structure according to claim 4, characterized in that, The extrusion component includes an extrusion body and an elastic seal sleeved on the extrusion body. The extrusion body has a channel communicating with the adhesive cavity, and the elastic seal is located between the extrusion body and the side plate.

6. The auxiliary dispensing structure according to claim 5, characterized in that, The extrusion body has a boss on the side facing the side plate, and the elastic seal includes multiple sealing parts, each of which is sleeved on the extrusion body and abuts against the boss in the first direction.

7. The auxiliary dispensing structure according to claim 1, characterized in that, The guide portion has an annular cavity, which is disposed through the first direction; One end of the elastic member is fixedly connected to the base, and the other end is fixedly connected to the movable member. At least a portion of the movable member is located within the annular cavity and is slidably connected to the inner wall of the guide portion.

8. The auxiliary dispensing structure according to claim 1, characterized in that, It also includes a guide post, which is connected to the base, and the movable member is slidably connected to the guide portion, with the side of the movable member facing the guide post being slidably connected to the guide post. The elastic element is sleeved on the guide post and abuts against the base and the movable element; The guide portion and the moving part each have a slide rail, and the other has a slider that matches the slide rail.

9. The auxiliary dispensing structure according to claim 7 or 8, characterized in that, The elastic element includes one of a helical spring, a compression spring, a wave spring, and an elastic rubber column.

10. A dispensing device, characterized in that, It includes a machine body, a glue gun connected to the machine body, and an auxiliary glue dispensing structure as described in any one of claims 1 to 9, wherein the auxiliary glue dispensing structure is connected to the glue gun.

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