A dispensing machine

Abstract

The present invention relates to the technical field of glue dispensing equipment, and in particular to a glue dispensing machine, which comprises a bracket and a glue dispensing valve. When glue dispensing is required, when glue begins to enter an extrusion channel, a rotating conveying auger conveys the glue to a glue injection head. When the glue flows in the extrusion channel, a stirring member stirs and mixes the glue. The pitch of the conveying auger is in a gradual state. As the glue is closer to the injection head, the squeezing force of the conveying auger on the glue is stronger. If there are bubbles in the glue, the bubbles gradually float up in the extrusion channel under the action of the squeezing force of the conveying auger on the glue. Since the flowing glue will carry the bubbles downward, the bubbles have a balanced state in the extrusion channel. When the bubbles reach a balanced state, the bubbles are in a static state in the extrusion channel, thereby preventing the bubbles from being discharged from the extrusion channel through the glue injection head, thereby reducing the scrap rate of the product.

Description

Technical Field

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

[0002] Glue dispensing machines play an extremely important role in modern industrial production. They can accurately drip and apply various fluid glues on the surface or inside of products. They are widely used in many fields such as electronics, automobiles, aerospace, etc., greatly improving production efficiency and the accuracy and consistency of glue coating process. Existing glue dispensing machines are mainly composed of glue dispensing mechanism, driving mechanism and control system. The glue dispensing valve in the glue dispensing mechanism is a key component, which is usually composed of a mixing piece and a glue dispensing nozzle.

[0003] However, when the existing dispensing valve is working, if there are bubbles inside the glue, the bubbles will be dispersed or gathered by the mixing part when the mixing part is mixing the glue. These bubbles will cause the dispensing nozzle to be unstable during the dispensing process, either the amount of glue dispensed is too small to meet the gluing requirements of the product; or there will be a blank phenomenon, that is, the glue liquid fails to be properly coated on the product, which is extremely harmful to the product quality, greatly increases the defective rate of the product, not only causes the waste of raw materials, but also increases the production cost. In addition, during the shutdown stage of the dispensing machine, the existing dispensing valve is prone to colloid dripping, which destroys the appearance integrity of the product and the uniformity requirements of the glue coating. This uneven glue coating may further affect the performance and reliability of the product, and even lead to the scrapping of the entire product. Summary of the invention

[0004] The invention provides a glue dispensing machine to solve the problem that the existing glue dispensing machine easily increases the production scrap rate.

[0005] A dispensing machine of the present invention adopts the following technical solution:

[0006] A glue dispensing machine comprises a bracket and a glue dispensing valve.

[0007] A glue supply hose is arranged on the bracket, and one end of the glue supply hose is connected to the glue supply pump; the glue dispensing valve comprises a shell, a conveying auger and a stirring piece; the shell is arranged on the bracket, and an extrusion channel is arranged on the shell, and a glue injection head is arranged on the shell, and the glue injection head is connected with the extrusion channel; a glue supply port connecting the extrusion channel with the external environment is arranged on the shell, and the glue supply hose is connected with the glue supply port; the conveying auger is a variable pitch auger, and the closer the distance between the conveying auger and the glue injection head is, the smaller the pitch of the conveying auger gradually decreases; the conveying auger is rotatably arranged in the extrusion channel; the stirring piece is used to mix and stir the glue when the conveying auger conveys the glue; the stirring piece can also prevent the glue from dripping from the glue injection head when the glue dispensing is stopped; the stirring piece comprises a stirring auger, and the pitch of the stirring auger is the same as that of the conveying auger The screw pitch of the conveying auger is the same as that of the conveying auger, and a plurality of first notches are arranged on the stirring auger, and the plurality of first notches are evenly arranged along the extension direction of the stirring auger. The stirring auger rotates synchronously with the conveying auger, and the stirring auger can move relative to the conveying auger in the axial direction; the stirring element also includes a blocking auger, and the screw pitch of the blocking auger is the same as that of the conveying auger, and a plurality of second notches are arranged on the blocking auger, and the plurality of second notches are evenly arranged along the extension direction of the blocking auger. The blocking auger rotates synchronously with the stirring auger, and the blocking auger can move relative to the conveying auger in the axial direction. At the same time, the blocking auger can move relative to the stirring auger in the axial direction. The blocking auger can block the first notch, and the stirring auger can block the second notch.

[0008] Furthermore, a driving member is provided on the shell, and the driving member can drive the stirring auger and the conveying auger to have relative movement in the axial direction, and the driving member can also drive the blocking auger and the stirring auger to have relative movement in the axial direction.

[0009] Furthermore, the driving part includes a sliding sleeve, a first electromagnetic block and a first fixed magnetic block; the conveying auger has a rotating shaft, and the sliding sleeve is coaxially slidably connected to the rotating shaft; the sliding sleeve is fixedly connected to the stirring auger; the first fixed magnetic block is fixedly arranged on the shell, and the first electromagnetic block is fixedly arranged on the sliding sleeve, the magnetic pole of the first electromagnetic block can be switched back and forth, and the first electromagnetic block can absorb or repel the first fixed magnetic block, so that the sliding sleeve slides back and forth up and down on the rotating shaft.

[0010] Furthermore, the driving member also includes a connecting ring, a second electromagnetic block and a second fixed magnetic block. The connecting ring is fixedly connected to the sealing auger, the connecting ring is coaxially slidably connected to the rotating shaft, the second fixed magnetic block is fixedly arranged on the connecting ring, a plug-in slot is arranged on the sliding sleeve, the second electromagnetic block is fixedly arranged in the plug-in slot, and the second fixed magnetic block is slidably inserted in the plug-in slot; the magnetic poles of the second electromagnetic block can switch back and forth, and the second electromagnetic block can adsorb or repel the second fixed magnetic block.

[0011] Furthermore, an active motor is arranged on the shell, and the active motor is used to drive the rotating shaft to rotate.

[0012] Furthermore, a control board is provided on the shell, and the control board can control the start and stop of the active motor, and the control board can also regulate the magnetic poles of the first electromagnetic block and the second electromagnetic block.

[0013] Furthermore, a sealing plug is arranged on the shell, the sealing plug is arranged inside the extrusion channel, the sealing plug is arranged above the glue supply port, the rotating shaft passes through the sealing plug, and the rotating shaft and the sealing plug are sealed and connected.

[0014] Furthermore, a first guide rail and a second guide rail are provided on the bracket, the first guide rail and the second guide rail are cross-intersectingly arranged, the first guide rail is slidingly arranged on the bracket along a first direction, the second guide rail is slidingly arranged on the bracket along a second direction, the first direction and the second direction are coplanar and perpendicular, and the shell is arranged at the intersection of the first guide rail and the second guide rail.

[0015] The beneficial effects of the present invention are as follows: a glue dispensing machine of the present invention comprises a bracket and a glue dispensing valve. When glue dispensing is required, the glue supply pump is first controlled to start, and the glue supply pump conveys glue to the extrusion channel through the glue supply hose. When the glue begins to enter the extrusion channel, the conveying auger starts to rotate, and the rotating conveying auger conveys the glue to the glue injection head. When the glue flows in the extrusion channel, the stirring element stirs and mixes the glue. Generally, the glue is mixed by a variety of different components. The glue is mixed by the stirring element so that the glue is in a uniform state in the extrusion channel, thereby reducing the scrap rate of the product. Since the pitch of the conveying auger is in a gradual state, as the glue is closer to the injection head, the extrusion pressure of the conveying auger on the glue is stronger. If there are bubbles in the glue, the bubbles will gradually float up in the extrusion channel under the action of the extrusion pressure of the conveying auger on the glue. Since the flowing glue will carry the bubbles downward, the bubbles will have a balanced state in the extrusion channel. When the bubbles reach a balanced state, they will be stationary in the extrusion channel, thereby preventing the bubbles from being discharged from the extrusion channel through the injection head, thereby reducing the scrap rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A structural schematic diagram of a glue dispensing machine provided by an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the structure of a glue dispensing valve in a glue dispensing machine provided in an embodiment of the present invention;

[0019] Figure 3A side view of a glue dispensing valve in a glue dispensing machine provided by an embodiment of the present invention;

[0020] Figure 4 for Figure 3 Sectional view in the AA direction;

[0021] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0022] Figure 6 A schematic diagram of the structure of a conveying auger, a stirring auger, and a blocking auger in a dispensing valve in a dispensing machine provided in an embodiment of the present invention;

[0023] Figure 7 for Figure 6 A partial enlarged view of point C in the middle;

[0024] Figure 8 for Figure 6 Cross-sectional view in the middle DD direction;

[0025] Fig. 9 for Figure 8 A partial enlarged view of point E in the middle.

[0026] In the figure: 110, bracket; 111, first guide rail; 112, second guide rail; 120, shell; 130, conveying auger; 140, glue injection head; 150, glue supply port; 160, sealing plug; 170, driving motor; 210, stirring auger; 211, first gap; 220, sealing auger; 221, second gap; 230, rotating shaft; 310, sliding sleeve; 340, connecting ring; 350, second electromagnetic block; 360, second fixed magnetic block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] like Figures 1 to 9 As shown, an embodiment of the present invention provides a glue dispensing machine, which includes a bracket 110 and a glue dispensing valve.

[0031] The support 110 is arranged on the ground or on the operating table, and the workpiece can be placed on the support 110. The support 110 is provided with a glue supply pump, and the glue supply pump has a plurality of glue extraction tubes, and each glue extraction tube can extract a type of glue. The support 110 is provided with a glue supply tube, and one end of the glue supply tube is connected to the glue supply pump, and the glue extracted by the glue supply pump can be transported to the inside of the glue supply tube.

[0032] The dispensing valve includes a housing 120, a conveying auger 130 and a stirring member; the housing 120 is arranged on the bracket 110, the housing 120 is arranged vertically on the bracket 110, an extrusion channel is arranged on the housing 120, the extrusion channel is arranged vertically, a glue injection head 140 is arranged on the housing 120, the glue injection head 140 is connected with the extrusion channel, and the glue entering the extrusion channel can be separated from the extrusion channel through the glue injection head 140. The housing 120 is provided with a glue supply port 150 connecting the extrusion channel with the external environment, the glue supply hose is connected with the glue supply port 150, and the side wall of the glue supply hose is sealed and connected with the side wall of the glue supply port 150 to prevent the glue from overflowing from the glue supply port 150. The conveying auger 130 is coaxially rotatably arranged in the extrusion channel, and the edge of the conveying auger 130 abuts against the inner side wall of the extrusion channel. When the conveying auger 130 rotates, the conveying auger 130 conveys the glue entering the extrusion channel. Furthermore, the conveying auger 130 is a variable pitch auger. The closer the distance between the conveying auger 130 and the glue injection head 140 is, the smaller the pitch of the conveying auger 130 is. When the glue enters the inside of the extrusion channel, the conveying auger 130 starts to rotate. The conveying auger 130 squeezes the glue while conveying the glue. If there are bubbles in the glue, after squeezing the glue, the pressure of the glue rises, and the bubbles in the glue gradually float up. Since the flowing glue will carry the bubbles downward, the bubbles have a balanced state in the extrusion channel. When the bubbles reach a balanced state, the bubbles are in a static state in the extrusion channel, thereby preventing the bubbles from being discharged from the extrusion channel through the glue injection head 140. The stirring member is used to mix and stir the glue when the conveying auger 130 conveys the glue. The stirring member can also prevent the glue from dripping from the glue injection head 140 when the glue dispensing is stopped. Specifically, if multiple types of glue enter the extrusion channel at the same time, the stirring member is started, and the stirring member mixes and stirs the glue in the extrusion channel, so that the multiple types of glue can be evenly mixed. After the multiple types of glue are mixed, they are discharged from the extrusion channel through the glue injection head 140, thereby realizing glue dispensing. In addition, when glue dispensing stops, there is a certain gravity in the glue inside the glue injection head 140, and the glue inside the glue injection head 140 may drip autonomously. At this time, the stirring member prevents the glue from dripping from the glue injection head 140, thereby preventing the dripping glue from damaging the glued product.

[0033] A glue dispensing machine of the present invention, when glue dispensing is required, first controls the glue supply pump to start, and the glue supply pump conveys glue to the extrusion channel through the glue supply pipe. When the glue begins to enter the extrusion channel, the conveying auger 130 begins to rotate, and the rotating conveying auger 130 conveys the glue to the glue injection head 140. When the glue flows in the extrusion channel, the stirring element stirs and mixes the glue. Generally, the glue is mixed with a variety of different components. The mixing of the glue by the stirring element makes the glue in a uniform state in the extrusion channel, thereby reducing the scrap rate of the product. Since the pitch of the conveying auger 130 is in a gradual state, as the glue is closer to the injection head, the extrusion force of the conveying auger 130 on the glue is stronger. If there are bubbles in the glue, under the action of the extrusion force of the conveying auger 130 on the glue, the bubbles gradually float up in the extrusion channel, and fit the lower side wall of the conveying auger 130 during the floating process of the bubbles. Since the flowing glue will carry the bubbles downward, the bubbles will be in a balanced state in the extrusion channel. When the bubbles reach a balanced state, they will be stationary in the extrusion channel, thereby preventing the bubbles from being discharged from the extrusion channel through the glue injection head 140, thereby reducing the scrap rate of the product.

[0034] In one embodiment, the stirring member includes a stirring auger 210. The pitch of the stirring auger 210 is the same as the pitch of the conveying auger 130. The spiral direction of the stirring auger 210 is the same as the spiral direction of the conveying auger 130. The stirring auger 210 is coaxially arranged with the conveying auger 130. The stirring auger 210 can rotate in the extrusion channel. The edge of the stirring auger 210 abuts against the inner wall of the extrusion channel. A plurality of first notches 211 are arranged on the stirring auger 210. The plurality of first notches 211 are evenly arranged along the extension direction of the stirring auger 210. The stirring auger 210 rotates synchronously with the conveying auger 130. The stirring auger 210 can move relative to the conveying auger 130 in the axial direction. Specifically, when the conveying auger 130 conveys glue, the stirring auger 210 rotates synchronously in the extrusion channel. At the same time, the stirring auger 210 and the conveying auger 130 move relative to each other in the axial direction. In the initial state, at any one At a horizontal height, the distance between the upper side wall of the stirring auger 210 and the lower side wall of the conveying auger 130 is equal to the distance between the lower side wall of the stirring auger 210 and the upper side wall of the conveying auger 130. When the stirring auger 210 and the conveying auger 130 undergo relative movement in the axial direction, the glue conveyed by the conveying auger 130 can be stirred and mixed. When the conveying auger 130 rotates, the stirring auger 210 and the conveying auger 130 rotate synchronously, and the stirring auger 210 and the conveying auger 130 undergo relative movement in the axial direction.

[0035] In one embodiment, the stirring member further comprises a plugging auger 220, the pitch of the plugging auger 220 is the same as the pitch of the conveying auger 130, the spiral direction of the plugging auger 220 is the same as the spiral direction of the conveying auger 130, the plugging auger 220 is coaxially arranged with the conveying auger 130, the plugging auger 220 can rotate in the extrusion channel, and the edge of the plugging auger 220 abuts against the inner wall of the extrusion channel. The plugging auger 220 is provided with a plurality of second notches 221, and the plurality of second notches 221 are evenly arranged along the extension direction of the plugging auger 220, the plugging auger 220 rotates synchronously with the stirring auger 210, the plugging auger 220 can move relative to the conveying auger 130 in the axial direction, and at the same time, the plugging auger 220 can move relative to the stirring auger 210 in the axial direction, the plugging auger 220 can block the first notch 211, and the stirring auger 210 can block the second notch 221. Specifically, it is initially set that the blocking auger 220 and the conveying auger 130 are in a state of being far away from each other, that is, the first gap 211 is not blocked by the blocking auger 220, and the second gap 221 is not blocked by the stirring auger 210. At this time, when the conveying auger 130 rotates, the blocking auger 220 and the stirring auger 210 rotate at the same time. At this time, the stirring auger 210 and the conveying auger 130 have relative movement in the axial direction. The stirring auger 210 drives the blocking auger 220 to synchronously move with the conveying auger 130 in the axial direction. Then, the stirring auger 210 and the blocking auger 220 stir and mix the glue at the same time.

[0036] Furthermore, when dispensing glue is stopped, the conveying auger 130, the blocking auger 220 and the stirring auger 210 stop rotating at the same time, and the blocking auger 220 moves in the axial direction of the conveying auger 130, so that the blocking auger 220 and the stirring auger 210 are attached to each other, and the blocking auger 220 blocks the first notch 211, and the stirring auger 210 blocks the second notch 221, and then the blocking auger 220 and the stirring auger 210 move upward in the axial direction of the conveying auger 130 synchronously. Since the glue is in a state of being attached to the lower side wall of the conveying auger 130, when the blocking auger 220 and the stirring auger 210 move upward in the axial direction of the conveying auger 130 synchronously, the bubbles in the glue are squeezed, and the glue in the extrusion channel is extracted upward at the same time, reducing the probability of the glue inside the glue injection head 140 dripping autonomously.

[0037] In one embodiment, a driving member is provided on the housing 120, and the driving member can drive the stirring auger 210 and the conveying auger 130 to move relative to each other in the axial direction, and the driving member can also drive the blocking auger 220 and the stirring auger 210 to move relative to each other in the axial direction. By setting the driving member to control the blocking auger 220 and the stirring auger 210, it is ensured that the stirring of glue and the probability of reducing the autonomous dripping of glue inside the glue injection head 140 can be smoothly carried out. For example, the driving member is a first driving cylinder and a second driving cylinder, and the first driving cylinder and the second driving cylinder are both parallel to the axis of the conveying auger 130, and the conveying auger 130 is provided with a first auxiliary ring, and the first auxiliary ring can slide on the conveying auger 130, and the first auxiliary ring is provided with an annular groove, one end of the first driving cylinder is connected to the housing 120, and the other end of the first driving cylinder is slidably arranged in the annular groove, the first auxiliary ring is fixedly connected to the stirring auger 210, and the length of the first driving cylinder changes back and forth when the conveying auger 130 rotates. A second auxiliary ring is fixedly provided on the sealing auger 220, and the second auxiliary ring can slide on the conveying auger 130. The second driving cylinder is arranged between the first auxiliary ring and the second auxiliary ring. The second driving cylinder is in the longest state in the initial state. When dispensing stops, the second driving cylinder begins to gradually shorten.

[0038] In one embodiment, the driving member includes a sliding sleeve 310, a first electromagnetic block and a first fixed magnetic block; the conveying auger 130 has a rotating shaft 230, and an active motor 170 is arranged on the housing 120, and the active motor 170 is used to drive the rotating shaft 230 to rotate. The sliding sleeve 310 is coaxially slidably connected with the rotating shaft 230, and when the conveying auger 130 rotates, the sliding sleeve 310 and the conveying auger 130 rotate synchronously. The sliding sleeve 310 is fixedly connected with the stirring auger 210, and the stirring auger 210 and the conveying auger 130 rotate synchronously through the transmission of the sliding sleeve 310. The first fixed magnetic block is fixedly arranged on the housing 120, and the first electromagnetic block is fixedly arranged on the sliding sleeve 310. The magnetic pole of the first electromagnetic block can be switched back and forth, and the first electromagnetic block can absorb or repel the first fixed magnetic block, so that the sliding sleeve 310 slides back and forth up and down on the rotating shaft 230. Specifically, the first electromagnetic block and the first fixed magnetic block are both arranged in an annular shape and are coaxial with the rotating shaft 230 . When the magnetic pole of the first electromagnetic block changes, the sliding sleeve 310 can slide in the axial direction of the rotating shaft 230 .

[0039] In one embodiment, the driving member further includes a connecting ring 340, a second electromagnetic block 350 and a second fixed magnetic block 360. The connecting ring 340 is fixedly connected to the plugging auger 220. The connecting ring 340 is coaxially slidably connected to the rotating shaft 230. Through the transmission of the connecting ring 340, the plugging auger 220 and the conveying auger 130 are synchronously rotated. The second fixed magnetic block 360 is fixedly arranged on the connecting ring 340. A plug-in slot is arranged on the sliding sleeve 310. The second electromagnetic block 350 is fixedly arranged in the plug-in slot. The second fixed magnetic block 360 is slidably plugged into the plug-in slot. Under the action of the second fixed magnetic block 360, the plugging auger 220 and the stirring auger 210 are synchronously rotated. The magnetic poles of the second electromagnetic block 350 can be switched back and forth, and the second electromagnetic block 350 can adsorb or repel the second fixed magnetic block 360. In the initial setting, the second electromagnetic block 350 and the second fixed magnetic block 360 are in a state of mutual repulsion, so that the stirring auger 210 and the sealing auger 220 are in a state of non-fitting each other. When dispensing is stopped, the magnetic poles of the second electromagnetic block 350 are switched, and the second electromagnetic block 350 and the second fixed magnetic block 360 are mutually attracted, so that the stirring auger 210 and the sealing auger 220 are fitted to each other.

[0040] In one embodiment, a control panel is provided on the housing 120, and the control panel can control the start and stop of the active motor 170, and can also adjust the magnetic poles of the first electromagnetic block and the second electromagnetic block 350. Specifically, the control panel has a control program inside, and the staff can adjust the control program. By setting the control panel, the precision of the control of the start and stop of the active motor 170 and the change of the magnetic poles of the first electromagnetic block and the second electromagnetic block 350 is improved, thereby improving the accuracy of the control of the conveying auger 130, the stirring auger 210 and the plugging auger 220.

[0041] In one embodiment, a sealing plug 160 is provided on the housing 120, the sealing plug 160 is provided inside the extrusion channel, the sealing plug 160 is provided above the glue supply port 150, the rotating shaft 230 passes through the sealing plug 160, and the rotating shaft 230 is sealed and connected with the sealing plug 160. By providing the sealing plug 160, the glue entering the extrusion channel is prevented from flowing backward.

[0042] In one embodiment, the bracket 110 is provided with a first guide rail 111 and a second guide rail 112, the first guide rail 111 and the second guide rail 112 are cross-intersected, the first guide rail 111 and the second guide rail 112 are slidably connected, the first guide rail 111 is slidably arranged on the bracket 110 along a first direction, the second guide rail 112 is slidably arranged on the bracket 110 along a second direction, the first direction and the second direction are coplanar and perpendicular, and the housing 120 is arranged at the intersection of the first guide rail 111 and the second guide rail 112. Specifically, in the same plane, the first direction is the X-axis, the second direction is the Y-axis, and the intersection of the first guide rail 111 and the second guide rail 112 can stay at any position, thereby ensuring that the glue injection head 140 can dispense glue at any position in the plane where the workpiece is located.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dispensing machine, characterized in that: include: A bracket, on which a glue supply hose is arranged, one end of which is connected to a glue supply pump; The dispensing valve includes a shell, a conveying auger and a stirring piece; the shell is arranged on a bracket, an extrusion channel is arranged on the shell, a glue injection head is arranged on the shell, and the glue injection head is connected with the extrusion channel; a glue supply port connecting the extrusion channel with the external environment is arranged on the shell, and the glue supply hose is connected with the glue supply port; the conveying auger is a variable pitch auger, and the closer the distance between the conveying auger and the glue injection head is, the smaller the pitch of the conveying auger is; the conveying auger is rotatably arranged in the extrusion channel, and the conveying auger squeezes the glue while conveying the glue, so that the bubbles are in a stationary state in the extrusion channel, and the bubbles are prevented from being discharged from the extrusion channel through the glue injection head; the stirring piece is used to mix and stir the glue when the conveying auger conveys the glue; the stirring piece can also prevent the glue from dripping from the glue injection head when the dispensing is stopped; The stirring member comprises a stirring auger, the pitch of the stirring auger is the same as the pitch of the conveying auger, a plurality of first notches are arranged on the stirring auger, and the plurality of first notches are evenly arranged along the extension direction of the stirring auger. The stirring auger rotates synchronously with the conveying auger, and the stirring auger can move relative to the conveying auger in the axial direction; The stirring member also includes a plugging auger, the pitch of the plugging auger is the same as the pitch of the conveying auger, a plurality of second notches are arranged on the plugging auger, and the plurality of second notches are evenly arranged along the extension direction of the plugging auger, the plugging auger rotates synchronously with the stirring auger, the plugging auger can move relative to the conveying auger in the axial direction, and at the same time, the plugging auger can move relative to the stirring auger in the axial direction, the plugging auger can block the first notch, and the stirring auger can block the second notch; When the conveying auger is conveying glue, the stirring auger drives the sealing auger to move synchronously with the conveying auger in the axial direction to stir and mix the glue; when the glue dispensing stops, the sealing auger and the stirring auger move upward in the axial direction of the conveying auger synchronously, the bubbles in the glue are squeezed, and the glue in the extrusion channel is extracted upward at the same time.

2. A glue dispensing machine according to claim 1, characterized in that: A driving member is arranged on the shell, and the driving member can drive the stirring auger and the conveying auger to move relative to each other in the axial direction, and the driving member can also drive the blocking auger and the stirring auger to move relative to each other in the axial direction.

3. A glue dispensing machine according to claim 2, characterized in that: The driving part includes a sliding sleeve, a first electromagnetic block and a first fixed magnetic block; the conveying auger has a rotating shaft, and the sliding sleeve is coaxially slidably connected with the rotating shaft; the sliding sleeve is fixedly connected with the stirring auger; the first fixed magnetic block is fixedly arranged on the shell, and the first electromagnetic block is fixedly arranged on the sliding sleeve, the magnetic pole of the first electromagnetic block can be switched back and forth, and the first electromagnetic block can absorb or repel the first fixed magnetic block, so that the sliding sleeve slides back and forth up and down on the rotating shaft.

4. A glue dispensing machine according to claim 3, characterized in that: The driving member also includes a connecting ring, a second electromagnetic block and a second fixed magnetic block. The connecting ring is fixedly connected to the sealing auger, the connecting ring is coaxially slidably connected to the rotating shaft, the second fixed magnetic block is fixedly arranged on the connecting ring, a plug-in groove is arranged on the sliding sleeve, the second electromagnetic block is fixedly arranged in the plug-in groove, and the second fixed magnetic block is slidably inserted in the plug-in groove; the magnetic poles of the second electromagnetic block can switch back and forth, and the second electromagnetic block can adsorb or repel the second fixed magnetic block.

5. A glue dispensing machine according to claim 4, characterized in that: The shell is provided with an active motor, which is used to drive the rotating shaft to rotate.

6. A glue dispensing machine according to claim 5, characterized in that: A control board is arranged on the shell, and the control board can control the start and stop of the active motor, and the control board can also regulate the magnetic poles of the first electromagnetic block and the second electromagnetic block.

7. A glue dispensing machine according to claim 3, characterized in that: A sealing plug is arranged on the shell, the sealing plug is arranged inside the extrusion channel, the sealing plug is arranged above the glue supply port, the rotating shaft passes through the sealing plug, and the rotating shaft and the sealing plug are sealed and connected.

8. The glue dispensing machine according to claim 1, characterized in that: The bracket is provided with a first guide rail and a second guide rail, the first guide rail and the second guide rail are cross-intersected, the first guide rail is slidably arranged on the bracket along a first direction, and the second guide rail is slidably arranged on the bracket along a second direction, the first direction and the second direction are coplanar and perpendicular, and the shell is arranged at the intersection of the first guide rail and the second guide rail.

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