Glue solution injection valve device with external displacement sensor and dispensing equipment with glue solution injection valve device

Abstract

The utility model discloses a displacement sensor external glue injection valve device and dispensing equipment with the same, the glue injection valve device comprises a valve body, a driving piston, a piston rod, a magnetic piece and an external magnetostrictive displacement sensor, the valve body is provided with a valve cavity, one end of the valve body is provided with a first air port, and the other end of the valve body is provided with a second air port; the driving piston is arranged in the valve cavity in a sliding mode and divides the valve cavity into a first cavity body and a second cavity body, the first air port is communicated with the first cavity body, and the second air port is communicated with the second cavity body. One end of the piston rod is located in the valve cavity and connected with the driving piston, and the other end of the piston rod is located outside the valve cavity and used for pushing glue; the magnetic part is arranged on the driving piston so as to move along with the driving piston; the external magnetostriction displacement sensor is arranged outside the valve body, extends in the length direction of the piston rod and is used for detecting the moving distance of the magnetic piece. The glue solution injection valve device disclosed by the utility model is high in glue supply precision and strong in stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to point gum technical field especially, it relates to a displacement sensor external type glue liquid injection valve device and have its point gum equipment. BACKGROUND

[0002] In modern industrial automation production, point gum technology as an important process means is widely used in electronic, semiconductor, automobile and other industries. The automatic point gum equipment is driven by pneumatic system, which is a common realization mode at present. The core mechanism of such equipment usually includes cylinder, piston, glue cylinder and point gum valve and other key components.

[0003] Its working principle is to use compressed air as power source, and the piston in the glue cylinder is subjected to the thrust of the air rod in the cylinder. Under the action of air pressure, the piston moves in the glue cylinder, so that the glue material in the glue cylinder is extruded and delivered to the point gum valve. As the terminal actuating mechanism for controlling the flow of glue, the point gum valve is responsible for accurately applying glue to the specified position of the workpiece. In this glue supply system, the control of glue supply amount mainly depends on two key parameters: air pressure and glue supply time. The operator usually sets the required air pressure value and sets the duration of glue supply through the control system to adjust the glue supply amount.

[0004] However, this kind of glue supply control mode based on air pressure has inherent limitations. First of all, the compressed air system itself has certain volatility, and factors such as the running state of the air compressor, the air pressure loss in the pipeline and the change of environmental temperature will affect the stability of the air pressure. Secondly, the physical properties of the glue material, such as viscosity and thixotropy, will change with factors such as temperature and time, which requires the air pressure control system to adapt to these changes. However, in actual application, simple air pressure control often cannot quickly respond to these changes. These problems eventually lead to poor repeatability of glue supply amount, and there is obvious deviation in glue amount under the same parameter setting. At the same time, the glue supply precision is not high, which is difficult to meet the requirements of high-precision point gum process. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving one of the technical problems in the related art at least to some extent. Therefore, the purpose of the utility model is to provide a displacement sensor external type glue liquid injection valve device and a point gum equipment with it.

[0006] To achieve the above-mentioned purpose, on the one hand, according to the displacement sensor external type glue liquid injection valve device of the utility model embodiment, it comprises:

[0007] The valve body has a valve cavity, one end of the valve body is provided with a first air port, and the other end of the valve body is provided with a second air port;

[0008] An active piston is slidably arranged in the valve cavity and separates the valve cavity into a first cavity and a second cavity, the first gas port communicates with the first cavity, and the second gas port communicates with the second cavity;

[0009] A piston rod has one end located in the valve cavity and connected with the active piston, and the other end located outside the valve cavity to inject glue solution;

[0010] A magnetic member is arranged on the active piston to move with the active piston;

[0011] An external magnetostrictive displacement sensor is arranged outside the valve body and extends along the length direction of the piston rod to detect the moving distance of the magnetic member.

[0012] The displacement sensor external glue injection valve device provided by the embodiment of the present application can detect the displacement of the active piston in real time and accurately, thereby indirectly monitoring the advancing distance of the piston rod. Since the displacement of the piston rod and the output of the glue solution have a certain corresponding relationship, the design can accurately control the injection amount of the glue solution, and effectively avoids the problem of low glue supply precision caused by unstable air pressure in the traditional air pressure control mode. At the same time, the external magnetostrictive displacement sensor is installed externally, which not only facilitates the installation and maintenance of the sensor, but also effectively prevents the sensor from being contaminated by the glue solution, thereby improving the reliability and service life of the equipment. In addition, the device is conducive to real-time monitoring and closed-loop control of the glue injection process, can timely find and correct the glue supply deviation, and significantly improves the precision and stability of the glue supply.

[0013] In addition, the displacement sensor external glue injection valve device according to the above embodiment of the present application can have the following additional technical features:

[0014] According to one embodiment of the present application, the active piston comprises:

[0015] A plug body connected with the piston rod;

[0016] A sealing ring arranged around the outer circumferential surface of the plug body and forming a seal with the inner wall of the valve cavity;

[0017] The magnetic member is a permanent magnet, the outer circumferential surface of the plug body is provided with a mounting hole, and the magnetic member is embedded in the mounting hole.

[0018] According to one embodiment of the present application, the sealing ring is two, the outer circumferential surface of the plug body is provided with two annular grooves, and an annular ridge is formed between the two annular grooves.

[0019] Two sealing rings correspond to two annular grooves, each sealing ring is sleeved in the corresponding annular groove, and the mounting hole is arranged on the outer circumferential surface of the annular ring.

[0020] According to an embodiment of the utility model, the displacement sensor external type glue liquid push injection valve device still includes glue cylinder, the glue cavity has piston port in one end of glue cavity, the other end of glue cavity has glue outlet,

[0021] Glue cylinder detachable connection is established in valve body, the other end of piston rod is equipped with driven piston, driven piston from piston port extends into glue cavity and with the inner wall of glue cavity sliding fit, with to extrude the colloid in glue cavity from glue outlet.

[0022] According to an embodiment of the utility model, the piston rod is two, two piston rods are parallelly arranged and are connected with the driving piston,

[0023] The glue cavity is two, two glue cavities correspond to two piston rods, and the driven piston on each piston rod is in sliding fit with the corresponding glue cavity.

[0024] According to an embodiment of the utility model, the displacement sensor external type glue liquid push injection valve device still includes mixing glue pipe, mixing glue pipe is connected with the other end of glue cylinder, to mix two kinds of colloid extruded in two glue cavities.

[0025] According to an embodiment of the utility model, the displacement sensor external type glue liquid push injection valve device still includes locking seat, the locking seat is fixed in the other end of valve body, and the glue cylinder is detachably installed on the locking seat and is locked and fixed on the valve body through the locking seat.

[0026] According to an embodiment of the utility model, the locking seat includes a fixed seat, a turnover seat and a threaded locking piece, the fixed seat is fixed to the other end of the valve body, the turnover seat is pivotally connected to the fixed seat, and a clamping cavity for accommodating the one end of the glue cylinder is defined between the fixed seat and the turnover seat.

[0027] The threaded locking piece is arranged on the fixed seat and is configured to lock the turnover seat and the fixed seat when the turnover seat is relatively closed with the fixed seat, so that the one end of the glue cylinder is clamped and fixed in the clamping cavity.

[0028] According to an embodiment of the utility model, the side wall of the clamping cavity has a stepped surface, and the one end of the glue cylinder has a stopper along, which stops above the stepped surface.

[0029] In another aspect, the glue dispensing equipment according to the embodiment of the present application has the displacement sensor external glue liquid injection valve device as described above.

[0030] The glue dispensing equipment according to the embodiment of the present application has the displacement sensor external glue liquid injection valve device as described above, so that the glue supply precision is high, and the precision and stability of glue supply are significantly improved.

[0031] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in these drawings without creative labor for those skilled in the art.

[0033] Figure 1 is a structure schematic diagram of one embodiment of the displacement sensor external glue liquid injection valve device of the present application;

[0034] Figure 2 is a sectional view of one embodiment of the displacement sensor external glue liquid injection valve device of the present application;

[0035] Figure 3 is an exploded view of one embodiment of the displacement sensor external glue liquid injection valve device of the present application;

[0036] Figure 4 is a structure schematic diagram of another embodiment of the displacement sensor external glue liquid injection valve device of the present application;

[0037] Figure 5 is an exploded view of another embodiment of the displacement sensor external glue liquid injection valve device of the present application.

[0038] Reference signs:

[0039] 10, valve body;

[0040] P10, valve cavity;

[0041] 20, driving piston;

[0042] 201, plug body;

[0043] 2011, annular flange;

[0044] 202, sealing ring;

[0045] H201, annular groove;

[0046] H202, mounting hole;

[0047] 30, piston rod;

[0048] 40, magnetic piece;

[0049] 50, external magnetostrictive displacement sensor;

[0050] 60, rubber tube;

[0051] P60, rubber cavity;

[0052] 61, driven piston;

[0053] 70, glue mixing pipe;

[0054] 80, locking seat;

[0055] 801, fixed seat;

[0056] 802, turnover seat;

[0057] 803, threaded locking piece.

[0058] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0059] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0060] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms 'center', 'longitudinal', 'transverse', 'length', 'width', 'thickness', 'upper', 'lower', 'front','rear', 'left', 'right','vertical', 'horizontal', 'top', 'bottom', 'inner', 'outer', 'clockwise', 'counterclockwise', 'axial', 'circumferential', 'radial' and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0061] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0062] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can include direct contact between the first and second features, or it can include indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0064] The displacement sensor external type glue liquid injection valve device and the point glue equipment with it are described in detail below with reference to the drawings.

[0065] Referring to Figures 1 to 5 As shown in the drawings, the displacement sensor external type glue liquid injection valve device provided by the embodiment of the present application comprises a valve body 10, a driving piston 20, a piston rod 30, a magnetic member 40 and an external magnetostrictive displacement sensor 50.

[0066] Specifically, the valve body 10 has a valve cavity P10 for driving the piston 20 to move. One end of the valve body 10 is provided with a first air port, and the other end of the valve body 10 is provided with a second air port. Exemplarily, the first air port is arranged on the side surface of one end of the valve body 10, and the second air port is arranged on the side surface of the other end of the valve body 10.

[0067] The main piston 20 is slidably arranged in the valve cavity P10 and separates the valve cavity P10 into a first cavity and a second cavity. The first gas port is in communication with the first cavity, and the second gas port is in communication with the second cavity. In a specific application, the first gas port and the second gas port are connected to a gas circuit system, and the first gas port and the second gas port are used for air intake or air exhaust to realize the reciprocating movement of the piston in the valve cavity P10.

[0068] One end of the piston rod 30 is located in the valve cavity P10 and connected to the main piston 20, and the other end of the piston rod 30 is located outside the valve cavity P10 and used for injecting glue. The other end of the piston rod 30 can be connected to a glue supply device, and when the main piston 20 moves under the action of air pressure, the piston rod 30 moves with it, thereby pushing the glue in the glue supply device to be quantitatively output.

[0069] The magnetic member 40 is arranged on the main piston 20 to move with the main piston 20. The magnetic member 40 can be a permanent magnet or other magnetic component, and its installation position and manner ensure that it can move synchronously with the main piston 20.

[0070] The external magnetostrictive displacement sensor 50 is arranged outside the valve body 10 and extends along the length direction of the piston rod to detect the movement distance of the magnetic member 40. That is, the external magnetostrictive displacement sensor 50 is fixed outside the valve body 10 in an external mounting manner, and its extension direction is parallel to the movement direction of the piston rod 30. The external magnetostrictive displacement sensor 50 can detect the position change of the magnetic member 40 in real time and convert the displacement information into an electrical signal output.

[0071] In actual work process, when compressed air enters the first cavity through the first gas port, it will push the main piston 20 to move towards the second gas port. The movement of the main piston 20 drives the piston rod 30 to move, and the magnetic member 40 also moves with it. The external magnetostrictive displacement sensor 50 can accurately obtain the real-time position of the main piston 20 by detecting the position change of the magnetic member 40, and further calculate the advancing distance of the piston rod 30. These data can be used to realize the accurate control and real-time monitoring of the glue output.

[0072] The displacement sensor external type glue liquid push injection valve device provided by the embodiment of the utility model can detect the displacement of the driving piston 20 in real time and accurately, thereby indirectly monitoring the advancing distance of the piston rod 30. Since the displacement of the piston rod 30 and the output of the glue liquid have a certain corresponding relationship, the design can accurately control the push injection amount of the glue liquid, and effectively avoid the problem of low glue supply precision caused by unstable air pressure in the traditional air pressure control mode. Meanwhile, the external type magnetostrictive displacement sensor 50 is installed externally, which not only facilitates the installation and maintenance of the sensor, but also effectively prevents the sensor from being polluted by the glue liquid, thereby improving the reliability and service life of the equipment. In addition, the device is beneficial to real-time monitoring and closed-loop control of the glue liquid push injection process, can timely find and correct the glue supply deviation, and significantly improves the precision and stability of glue supply.

[0073] Referring to Figure 2 and Figure 3 In an embodiment of the utility model, the driving piston 20 comprises a plug body 201 and a sealing ring 202, and the piston rod 30 is connected with the plug body 201; the sealing ring 202 is arranged around the outer circumferential surface of the plug body 201 and forms a seal with the inner wall of the valve cavity P10; wherein the magnetic member 40 is a permanent magnet, the outer circumferential surface of the plug body 201 is provided with a mounting hole H202, and the magnetic member 40 is embedded in the mounting hole H202.

[0074] The magnetic member 40 in the embodiment adopts a permanent magnet, and the permanent magnet has the characteristics of stable magnetic field strength and long service life. In order to install the permanent magnet, the mounting hole H202 is arranged on the outer circumferential surface of the plug body 201. The permanent magnet is installed in an embedded mode and is completely embedded in the mounting hole H202. This embedded installation mode ensures the stability of the magnetic member 40 and avoids interference between the permanent magnet and the inner wall of the valve cavity P10, thereby protecting the permanent magnet from friction damage and not affecting the normal movement of the driving piston 20. In addition, the permanent magnet is installed on the outer circumferential surface of the plug body 201, so that the distance between the permanent magnet and the external external magnetostrictive displacement sensor 50 is smaller, thereby improving the accuracy of position detection.

[0075] Referring to Figure 2 In an embodiment of the utility model, the sealing ring 202 is two, the outer circumferential surface of the plug body 201 is provided with two annular grooves H201, and an annular ring 2011 is formed between the two annular grooves H201.

[0076] The two sealing rings 202 correspond to the two annular grooves H201 one by one, each sealing ring 202 is sleeved in the corresponding annular groove H201, and the mounting hole H202 is arranged on the outer circumferential surface of the annular ring 2011.

[0077] In this embodiment, the design of the double sealing ring 202 forms a series sealing structure, even if one of the sealing rings 202 has a slight leakage, the other sealing ring 202 can still maintain effective sealing, improving the reliability of the sealing. The area between the two annular grooves H201 forms an annular ridge 2011. The annular ridge 2011 not only plays the role of separating the two sealing rings 202, but also provides a space for installing a permanent magnet. Specifically, a mounting hole H202 for installing a permanent magnet is arranged on the outer circumferential surface of the annular ridge 2011, and the permanent magnet is embedded in the mounting hole H202. This arrangement allows the permanent magnet to be located in the middle position between the two sealing rings 202, and the axial direction of the mounting hole H202 is perpendicular to the axial direction of the plug body 201, so that the magnetic field direction of the permanent magnet is suitable for detection by the external magnetostrictive displacement sensor 50, improving the accuracy of detection. In addition, the presence of the annular ridge 2011 can also reduce the swing of the driving piston 20 during movement, improving the stability of movement.

[0078] Referring to Figures 4 to 5 As shown in the utility model, in one embodiment of the utility model, the displacement sensor external glue injection valve device further comprises a glue cylinder 60, the glue cylinder 60 has a glue cavity P60, one end of the glue cavity P60 has a piston port for the entry and movement of a driven piston 61, and the other end of the glue cavity P60 has a glue outlet for the discharge of glue.

[0079] The glue cylinder 60 is detachably connected to the valve body 10, and this detachable connection facilitates the replacement and cleaning and maintenance of the glue cylinder 60, and also allows the selection of a suitable specification of glue cylinder 60 according to the characteristics or use requirements of different glue. In addition, when the glue is used up or needs to be replaced with a different type of glue, the replacement operation can be quickly completed, improving work efficiency.

[0080] The other end of the piston rod 30 is provided with a driven piston 61, the driven piston 61 extends into the glue cavity P60 from the piston port and is in sliding fit with the inner circumferential wall of the glue cavity P60, so as to extrude the glue in the glue cavity P60 from the glue outlet.

[0081] During operation, when the driving piston 20 is driven to move by air pressure, the driven piston 61 is moved in the glue cavity P60 by the piston rod 30. The forward movement of the driven piston 61 generates pressure on the glue in the glue cavity P60, forcing the glue to be output quantitatively from the glue outlet. At the same time, since the entire injection process is accurately monitored by the external magnetostrictive displacement sensor 50, the displacement of the driven piston 61 can be accurately controlled, thereby achieving accurate control of the output glue amount.

[0082] In the embodiment, the cooperation of the driven piston 61 and the glue cavity P60 ensures the reliability and quantification of the glue delivery. In cooperation with the external magnetostrictive displacement sensor 50, the precise correspondence from mechanical movement to glue output is realized, which provides a guarantee for high-precision glue injection.

[0083] Referring to Figure 2 and Figures 4 to 5 As shown in the drawings, in some embodiments of the utility model, the piston rod 30 is two, two said piston rod 30 parallelly arranged and all with said driving piston 20 is connected, thus, it is ensured that two piston rods 30 can be driven by driving piston 20 and move synchronously, and the synchronization and consistency of double-path output are guaranteed.

[0084] The glue cavity P60 is two, and the two glue cavities P60 are used for storing different glue respectively. Two said glue cavities P60 correspond to two said piston rods 30 one by one, and the driven piston 61 on each said piston rod 30 is in sliding cooperation with the corresponding said glue cavity P60.

[0085] In actual application, this double-path structure can deliver two different glue at the same time, which is used for the application scene that needs two-component mixing. Specifically, two glue cavities P60 can set their diameter size according to the mixing ratio requirement. Since two piston rods 30 are driven by the same driving piston 20, when the driving piston 20 moves, it can drive two piston rods 30 to move synchronously, and then synchronously extrude two kinds of glue with corresponding proportion, and the displacement of the driving piston 20 is accurately monitored by the external magnetostrictive displacement sensor 50, so the output of the two glue paths has high synchronization and consistency. This synchronous driving method can better guarantee the synchronization of double-path output than using two independent control systems, and thus guarantees the output mixing of two kinds of glue according to the predetermined proportion.

[0086] In the embodiment, the synchronous and accurate delivery of double-path glue is realized, which significantly improves the functionality and applicability of the equipment and can meet the two-component dispensing application scene. Moreover, the synchronous driving of the driving piston 20 ensures the consistency of double-path output, avoiding the synchronization error that may be caused by multiple control systems.

[0087] Referring to Figures 4 to 5 As shown in the drawings, in one embodiment of the utility model, the displacement sensor external glue injection valve device further comprises a glue mixing pipe 70, which is connected with the other end of the glue cylinder 60, and is used for mixing two kinds of glue extruded in two said glue cavities P60. That is, the glue mixing pipe 70 is used as a convergence and mixing device for two-component glue.

[0088] In actual work process, different glue liquids in two glue cavities P60 are pushed by respective slave pistons 61, and then output through glue outlets, and then converge and mix in glue mixing pipe 70. Since two piston rods 30 are driven by same driving piston 20, output rates of two glue liquids are kept synchronous, which helps to keep stable proportion of two glue liquids. Mixing process in glue mixing pipe 70 is continuous, and mixed glue liquid can be directly used for subsequent processes such as coating or dispensing.

[0089] The configuration of the embodiment is particularly suitable for two-component glue liquid applications requiring mixing, such as mixing of epoxy resin and curing agent, dispensing of two-component sealant, etc. The arrangement of glue mixing pipe 70 avoids curing problem of glue liquid caused by pre-mixing, and ensures use performance of mixed glue liquid. Meanwhile, since two glue liquids are transported in a mechanical synchronous manner, accuracy and stability of proportion are reliably ensured.

[0090] Referring to Figures 4 to 5 As shown in the utility model, in some embodiments of the utility model, the displacement sensor external glue liquid push injection valve device still includes locking seat 80, locking seat 80 is fixed on the other end of valve body 10, glue cylinder 60 can be detachably installed on locking seat 80, and locking seat 80 is locked and fixed on valve body 10.

[0091] In actual application process, the detachable design of locking seat 80 significantly improves operation convenience. When glue cylinder 60 needs to be replaced, the operator can easily unlock locking seat 80, and quickly complete the replacement operation of glue cylinder 60. This quick replacement mode not only saves operation time, but also reduces downtime of production line. Meanwhile, the convenient disassembly and assembly characteristics are also conducive to daily cleaning and maintenance of equipment.

[0092] In addition, when glue cylinder 60 is installed in place and locked, locking seat 80 can provide sufficient fixing force, to ensure that glue cylinder 60 does not displace or loosen during work process. This stable connection mode is conducive to ensuring reliability of dispensing.

[0093] Referring to Figures 4 to 5 As shown in the utility model, in one embodiment of the utility model, locking seat 80 includes fixed seat 801, turnover seat 802 and threaded locking member 803, fixed seat 801 is fixed on the other end of valve body 10, for example, fixed on valve body 10 by screws or other fasteners.

[0094] The turnover seat 802 is pivotally connected with the fixed seat 801, and a clamping cavity for accommodating one end of the glue cylinder 60 is defined between the fixed seat 801 and the turnover seat 802. When it is necessary to install or replace the glue cylinder 60, an operator can rotate the turnover seat 802 to open, and easily put in or take out the glue cylinder 60. Preferably, the inner wall of the turnover seat 802 is designed with a positioning structure matched with the shape of the glue cylinder 60, so that the glue cylinder 60 can be accurately positioned after being put in.

[0095] The threaded locking piece 803 is arranged on the fixed seat 801 and is configured to lock the turnover seat 802 and the fixed seat 801 when the turnover seat 802 is relatively closed with the fixed seat 801, so that one end of the glue cylinder 60 is clamped and fixed in the clamping cavity. The threaded locking piece 803 usually adopts a structure such as a bolt. When the turnover seat 802 is closed with the fixed seat 801, the threaded locking piece 803 can be tightened to generate a stable locking force, so that the turnover seat 802 is firmly locked on the fixed seat 801. This locking mode can ensure that the fixed seat 801 and the turnover seat 802 form a reliable closed state, and then the glue cylinder 60 is stably clamped in the clamping cavity.

[0096] The structure of the locking seat 80 adopts a turnover structure to realize quick installation and removal of the glue cylinder 60, greatly improves the operation efficiency, meets the needs of quick replacement and stable fixation of the glue cylinder 60 of the glue liquid injection valve device in actual application, and ensures the stability and reliability of the structure.

[0097] In an embodiment of the utility model, the side wall of the clamping cavity has a stepped surface, and the one end of the glue cylinder 60 has a stopper edge which is stopped above the stepped surface.

[0098] That is, when the locking seat 80 is closed and locked, the stopper edge is reliably stopped above the stepped surface, and this stopper mode ensures the reliability of the connection between the glue cylinder 60 and the valve body 10, and prevents the glue cylinder 60 from being axially displaced in the use process. At the same time, the convenience during assembly is also improved.

[0099] The utility model embodiment further provides a point gluing equipment with the displacement sensor external type glue liquid injection valve device as described in the above embodiment.

[0100] According to the point gluing equipment provided by the utility model embodiment, the displacement sensor external type glue liquid injection valve device is provided, so that the glue supply precision is high, and the precision and stability of glue supply can be significantly improved.

[0101] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0102] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or directly / indirectly applied in other related technical fields under the application concept of the present application are included in the patent protection scope of the present application.

Claims

1. A displacement sensor external glue injection valve device, characterized in that, The valve device comprises: a valve body having a valve cavity, one end of the valve body being provided with a first gas port, the other end of the valve body being provided with a second gas port; a driving piston slidably arranged in the valve cavity and separating the valve cavity into a first cavity and a second cavity, the first gas port being communicated with the first cavity, the second gas port being communicated with the second cavity; a piston rod, one end of the piston rod being located in the valve cavity and connected with the driving piston, the other end of the piston rod being located outside the valve cavity and used for injecting glue; a magnetic member arranged on the driving piston to follow the movement of the driving piston; an external magnetostrictive displacement sensor arranged outside the valve body and extending along the length direction of the piston rod to detect the moving distance of the magnetic member.

2. The displacement sensor off-the-shelf glue bolus valve device of claim 1, wherein, The driving piston comprises: a plug body connected with the piston rod; a sealing ring arranged around the outer circumferential surface of the plug body and forming a seal with the inner wall of the valve cavity; wherein the magnetic member is a permanent magnet, the outer circumferential surface of the plug body is provided with a mounting hole, and the magnetic member is embedded in the mounting hole.

3. The displacement sensor off-the-shelf glue bolus valve device of claim 2, wherein, The sealing ring is two, the outer circumferential surface of the plug body is provided with two annular grooves, and an annular ridge is formed between the two annular grooves; The two sealing rings correspond to the two annular grooves one by one, each sealing ring is sleeved in the corresponding annular groove, and the mounting hole is arranged on the outer circumferential surface of the annular ridge.

4. The displacement sensor off-the-shelf glue bolus valve device of claim 1, wherein, The displacement sensor external glue injection valve device further comprises a glue cylinder having a glue cavity, one end of the glue cavity having a piston port, and the other end of the glue cavity having a glue outlet; The glue cylinder is detachably connected to the valve body, the other end of the piston rod is provided with a driven piston, the driven piston extends into the glue cavity from the piston port and is in sliding fit with the inner circumferential wall of the glue cavity, and the glue in the glue cavity is extruded from the glue outlet.

5. The displacement sensor off-the-shelf glue bolus valve device of claim 4, wherein, The piston rod is two, two piston rods are arranged in parallel and connected with the driving piston; The glue cavity is two, two glue cavities correspond to two piston rods one by one, and the driven piston on each piston rod is in sliding fit with the corresponding glue cavity.

6. The displacement sensor off-the-shelf glue bolus valve device of claim 5, wherein, The displacement sensor external glue injection valve device further comprises a glue mixing pipe connected with the other end of the glue cylinder to mix two kinds of glue extruded from the two glue cavities.

7. The displacement sensor off-the-shelf glue bolus valve device of claim 4, wherein, The displacement sensor external glue injection valve device further comprises a locking seat fixed to the other end of the valve body, the glue cylinder is detachably mounted on the locking seat and locked and fixed on the valve body through the locking seat.

8. The displacement sensor off-the-shelf glue bolus valve device of claim 7, wherein, The locking seat comprises a fixed seat, a turnover seat and a threaded locking member, the fixed seat is fixed to the other end of the valve body, the turnover seat is pivotally connected with the fixed seat, and a clamping cavity for accommodating the one end of the glue cylinder is defined between the fixed seat and the turnover seat; The thread locking member is arranged on the fixed seat and is configured to lock the turnover seat and the fixed seat when the turnover seat and the fixed seat are relatively closed, so that one end of the rubber tube is clamped and fixed in the clamping cavity.

9. The displacement sensor off-the-shelf glue bolus valve device of claim 8, wherein, The side wall of the clamping cavity has a stepped surface, and the one end of the rubber tube has a stopper edge which stops above the stepped surface.

10. A dispensing apparatus, comprising: A displacement sensor external glue injection valve device having any one of claims 1 to 9.

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