Glue path and gas path isolation glue gun

Abstract

The invention discloses a glue path and gas path isolation glue gun which comprises a basic module, a gas path valve module and a front end module, the gas path valve module is fixedly connected with the basic module, and the front end module is fixedly connected with the gas path valve module. A glue feeding pipeline, a gas feeding pipeline and a glue returning pipeline which are communicated with one another are arranged in the basic module, the gas circuit valve module and the front-end module, a glue feeding inlet, a gas circuit inlet and a glue returning outlet are formed in the basic module, a glue feeding outlet, a gas circuit outlet and a glue returning inlet are formed in the front-end module, the front-end module comprises a nozzle, and the nozzle is communicated with the gas circuit valve module. The gas path outlet and the glue feeding outlet on the front-end module are communicated with the nozzle through an electromagnetic valve, the glue returning inlet is communicated with the glue feeding outlet through the electromagnetic valve, and at least one filtering assembly is arranged on the gas feeding pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of glue gun gas path isolation, in particular to a glue gun with glue path and gas path isolation. Background Art

[0002] The glue circuit and gas circuit of the glue gun are separated by a sealing ring. After the glue gun has been running for a long time, the seal is worn and the anti-corrosion material enters the gas circuit through the worn seal. Adding an isolation protection device to the glue gun gas circuit can prevent the anti-corrosion material from entering the gas circuit through the sealing ring and damaging the gas circuit components, which can reduce the quality problems of subsequent car body production. With the increase in production capacity, it is imperative to prevent gas circuit pollution from causing damage to the electrical structure and affecting the quality of the car body. Summary of the invention

[0003] In order to solve at least one aspect of the above problems, the present invention provides a glue gun that isolates glue circuits and air circuits, comprising: a basic module, an air circuit valve module and a front-end module, the air circuit valve module is fixedly connected to the basic module, the front-end module is fixedly connected to the air circuit valve module, the basic module, the air circuit valve module and the front-end module are provided with connected glue delivery pipelines, air delivery pipelines and glue return pipelines, the basic module is provided with a glue delivery inlet, an air circuit inlet and a glue return outlet, the front-end module is provided with a glue delivery outlet, an air circuit outlet and a glue return inlet, the front-end module comprises a nozzle, the air circuit outlet on the front-end module and the glue delivery outlet are connected to the nozzle through a solenoid valve, the glue return inlet is connected to the glue delivery outlet through the solenoid valve, and at least one filter component is provided on the air delivery pipeline.

[0004] Preferably, the filter assembly includes a filter screen and a fastener, the projection of the filter screen on the cross-section of the air supply pipeline is greater than or equal to the cross-sectional area of ​​the air supply pipeline, and the fastener is used to fix the filter screen and the air supply pipeline.

[0005] Preferably, the filter assembly comprises a first filter assembly and a second filter assembly, wherein the first filter assembly is arranged on the air supply pipeline of the air circuit valve module, and the second filter assembly is arranged on the air supply pipeline in the basic module.

[0006] Preferably, the first filter assembly includes a first filter screen and a first fastener, the first filter assembly is fixedly arranged on the needle valve upper cover of the air circuit valve module, the needle valve upper cover is provided with a first air circuit through hole, the first filter screen is sealed at the first air circuit through hole, an installation groove is provided on the inner wall of the first air circuit through hole, the first fastener is arranged in the installation groove, and the edge of the first filter screen is arranged between the first fastener and the inner wall of the installation groove.

[0007] Preferably, the second filter assembly includes a second filter screen and a second fastener, the second filter assembly is fixedly arranged on the base of the basic module, a second air path hole is opened on the base, the second filter screen is sealed at the second air path hole, an installation groove is arranged on the inner wall of the second air path hole, the second fastener is arranged in the installation groove, and the edge of the second filter screen is arranged between the second fastener and the inner wall of the installation groove.

[0008] Preferably, the mesh openings of the first filter screen and the second filter screen are smaller than 60 um.

[0009] Preferably, the first filter screen adopts a circular structure, and the first fastener adopts a rubber ring.

[0010] Preferably, the second filter screen adopts an elliptical structure, and the second fastener adopts a rubber ring.

[0011] Preferably, the front-end module includes multiple nozzles and multiple solenoid valves, the multiple nozzles correspond one-to-one to the solenoid valves, the glue delivery pipeline includes multiple glue delivery branches, the multiple glue delivery branches are respectively connected to the glue delivery inlet, and the outlets of the multiple glue delivery branches are respectively connected to the multiple nozzles through the multiple solenoid valves.

[0012] The glue path and air path isolation glue gun of the present invention has the following beneficial effects: the glue path and air path of the glue gun are separated by a sealing ring. After the glue gun has been running for a long time, the seal is worn, and the anti-corrosion material enters the air path through the worn seal. When the compressed air mixed with pollutants is coarsely filtered through the first filter component and then finely filtered through the second filter component, the pollutants are fully filtered out without affecting the normal operation of other pneumatic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0014] Figure 1 A schematic structural diagram of an air circuit valve module and a front-end module of a glue gun for isolating a glue circuit and an air circuit according to an embodiment of the present invention is shown;

[0015] Figure 2 It shows a schematic structural diagram of a basic module of a glue path and gas path isolation glue gun according to an embodiment of the present invention;

[0016] Figure 3A schematic structural diagram of a needle valve upper cover of a glue gun for isolating a glue path and a gas path according to an embodiment of the present invention is shown;

[0017] Figure 4 A schematic diagram of the base structure of a basic module of a glue gun for isolating glue and gas paths according to an embodiment of the present invention is shown;

[0018] Figure 5 A schematic diagram showing the structure of the first filter assembly of the glue path and gas path isolation glue gun according to an embodiment of the present invention

[0019] Figure 6 A schematic structural diagram of a second isolation component of a glue gun for isolating glue paths and gas paths according to an embodiment of the present invention is shown.

[0020] Reference numerals

[0021] 1. Basic module; 2. Air path valve module; 3. Front end module; 11. Base; 21. Needle valve cover; 110. Second air path through hole; 210. First air path through hole; 101. First fastener; 102. First filter; 201. Second fastener; 202. Second filter. DETAILED DESCRIPTION

[0022] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0023] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0024] In order to at least partially solve one or more of the above-mentioned problems and other potential problems, an embodiment of the present invention proposes a glue gun for isolating glue circuits and air circuits, comprising: a basic module 1, an air circuit valve module 2 and a front-end module, the air circuit valve module 2 is fixedly connected to the basic module 1, the front-end module 3 is fixedly connected to the air circuit valve module 2, the basic module 1, the air circuit valve module 2 and the front-end module 3 are provided with connected glue delivery pipelines, air delivery pipelines and glue return pipelines, the basic module 1 is provided with a glue delivery inlet, an air circuit inlet and a glue return outlet, the front-end module 3 is provided with a glue delivery outlet, an air circuit outlet and a glue return inlet, the front-end module 3 includes a nozzle, the air circuit outlet and the glue delivery outlet on the front-end module 3 are connected to the nozzle through a solenoid valve, the glue return inlet is connected to the glue delivery outlet through a solenoid valve, and at least one filter component is provided on the air delivery pipeline.

[0025] Specifically, Figure 1 As shown, the basic module 1, the gas circuit valve module 2 and the front-end module 3 are connected in sequence, and the material enters the glue feeding pipeline through the glue feeding inlet on the basic module 1. When the solenoid valve controls the glue feeding outlet to be connected with the nozzle, the material flows from the glue feeding outlet to the nozzle and flows out from the nozzle. The gas enters the gas circuit pipeline through the gas circuit inlet on the basic module 1, and when the solenoid valve controls the gas circuit outlet to be connected with the nozzle, the gas flows from the gas circuit outlet to the nozzle. When glue spraying is not required, the solenoid valve controls the glue return inlet and the glue feeding outlet to be connected, so that the material flows from the glue feeding outlet to the glue return inlet, and further flows out from the glue return outlet through the glue return pipeline. At least one filter component is arranged on the air supply pipeline, and the filter component is used to filter the material entering the air supply pipeline through the sealing ring to avoid damage to the gas circuit components after the material enters the air supply pipeline.

[0026] In some embodiments, the filter assembly includes a filter screen and a fastener, the projection of the filter screen on the cross-section of the air supply pipeline is greater than or equal to the cross-sectional area of ​​the air supply pipeline, and the fastener is used to fix the filter screen and the air supply pipeline.

[0027] Specifically, the filter screen of the filter assembly is arranged parallel to the cross section of the air supply pipeline, so that the filter screen completely covers the air supply passage of the air supply pipeline, and the fastener is used to fix the filter screen and the air supply pipeline, so that the filter screen is stationary relative to the air supply pipeline, thereby increasing the stability of the filter assembly. In another embodiment, the filter screen and the cross section of the air supply pipeline form an acute angle, and the projection of the filter screen on the cross section of the air supply pipeline is greater than or equal to the cross-sectional area of ​​the air supply pipeline, the filter screen completely covers the air supply passage of the air supply pipeline, and the fastener fixes the filter screen and the air supply pipeline.

[0028] In some embodiments, the filter assembly includes a first filter assembly and a second filter assembly. The first filter assembly is arranged on the air supply pipeline of the air circuit valve module 2 , and the second filter assembly is arranged on the air supply pipeline in the basic module 1 .

[0029] Specifically, the first filter assembly and the second filter assembly are sequentially arranged on the air supply pipeline, so that the material entering the air supply pipeline is filtered by the first filter assembly and the second filter assembly, thereby increasing the cleaning strength of the material entering the air supply pipeline.

[0030] In some embodiments, the first filter assembly includes a first filter screen 102 and a first fastener 101. The first filter assembly is fixedly disposed on the needle valve cover 21 of the air path valve module 2. The needle valve cover 21 is provided with a first air path hole 210. The first filter screen 102 is sealed at the first air path hole 210. An installation groove is provided on the inner wall of the first air path hole 210. The first fastener 101 is disposed in the installation groove. The edge of the first filter screen 102 is disposed between the first fastener 101 and the inner wall of the installation groove.

[0031] Specifically, Figure 3 As shown, the first filter assembly is arranged on the needle valve cover 21 at the connection between the air path valve module 2 and the front end module 3, the first air path through hole 210 is a part of the air supply pipeline on the needle valve cover 21, and a mounting groove is opened at one end of the first air path through hole 210, and the mounting groove is an annular recessed platform opened on the needle valve cover 21. The first filter screen 102 covers one end of the mounting groove opened in the first air path through hole 210, so that the edge of the first filter screen 102 is placed on the annular recessed platform, and the first fastener 101 is snapped into the annular recessed platform of the mounting groove to fix and squeeze the edge of the first filter screen 102 between the first fastener 101 and the annular recessed platform.

[0032] In some embodiments, the second filter assembly includes a second filter screen 202 and a second fastener 201. The second filter assembly is fixedly mounted on the base 11 of the basic module 1. A second air path hole 110 is provided on the base 11. The second filter screen 202 is sealed at the second air path hole 110. An installation groove is provided on the inner wall of the second air path hole 110. The second fastener 201 is provided in the installation groove. The edge of the second filter screen 202 is provided between the second fastener 201 and the inner wall of the installation groove.

[0033] Specifically, Figure 4 As shown, the second filter assembly is arranged on the fixed base 11 of the basic module 1, the second air path through hole 110 is a part of the air supply pipeline on the base 11, and an installation groove is opened at one end of the second air path through hole 110, and the installation groove is an annular recess opened on the base 11. The second filter screen 202 covers one end of the installation groove opened in the second air path through hole 110, so that the edge of the second filter screen 202 is placed on the annular recess, and the second fastener 201 is snapped into the annular recess of the installation groove to fix and squeeze the edge of the second filter screen 202 between the second fastener 201 and the annular recess.

[0034] In some embodiments, the mesh size of the first filter 102 and the second filter 202 is less than 60 um.

[0035] Specifically, Figure 5 and Figure 6 As shown, the first filter screen 102 and the second filter screen 202 are made of alloy material, and the overall device is thin and tough and not easy to deform. The mesh size is less than 60um, which does not affect the delivery of compressed air in the air delivery pipeline, and can completely filter out the powder and material mixed residue caused by seal wear.

[0036] In some embodiments, the first filter screen 102 is a circular structure, and the first fastener 101 is a rubber ring.

[0037] Specifically, Figure 5 As shown, the first filter screen 102 adopts a circular mesh structure, the area of ​​the first filter screen 102 is larger than the area of ​​the first air path through hole 210, the first fastener 101 adopts a rubber ring, and the diameter of the first fastener 101 is greater than or equal to the diameter of the annular recess, so that the first fastener 101 and the inner wall of the annular recess are interference fit to achieve extrusion and fixation of the edge of the first filter screen 102.

[0038] In some embodiments, the second filter screen 202 is an elliptical structure, and the second fastener 201 is a rubber ring.

[0039] Specifically, Figure 6 As shown, the second filter 202 adopts an elliptical mesh structure, the area of ​​the second filter 202 is larger than the area of ​​the second air path through hole 110, the second fastener 201 adopts a rubber ring, and the circumference of the second fastener 201 is greater than or equal to the diameter of the annular recess of the second air path through hole 110, so that the second fastener 201 and the inner wall of the annular recess are interference fit to achieve extrusion and fixation of the edge of the second filter 202.

[0040] In some embodiments, the front-end module 3 includes multiple nozzles and multiple solenoid valves, the multiple nozzles correspond one-to-one to the solenoid valves, the glue delivery pipeline includes multiple glue delivery branches, the multiple glue delivery branches are respectively connected to the glue delivery inlets, and the glue delivery outlets of the multiple glue delivery branches are respectively connected to the multiple nozzles through multiple solenoid valves.

[0041] Specifically, the glue delivery pipeline includes three glue delivery branches, and the front-end module 3 includes three solenoid valves and three nozzles, and the angles of the three nozzles are 0 degrees, 45 degrees, and 90 degrees respectively. The glue delivery outlets of the three glue delivery branches are connected to the three nozzles through three solenoid valves respectively.

[0042] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.

Claims

1. A glue gun for isolating glue path and gas path, characterized in that: include: A basic module, an air circuit valve module and a front-end module, the air circuit valve module is fixedly connected to the basic module, the front-end module is fixedly connected to the air circuit valve module, the basic module, the air circuit valve module and the front-end module are provided with connected glue delivery pipelines, air delivery pipelines and glue return pipelines, the basic module is provided with a glue delivery inlet, an air circuit inlet and a glue return outlet, the front-end module is provided with a glue delivery outlet, an air circuit outlet and a glue return inlet, the front-end module includes a nozzle, the air circuit outlet on the front-end module and the glue delivery outlet are connected to the nozzle through a solenoid valve, the glue return inlet is connected to the glue delivery outlet through the solenoid valve, and at least one filter component is provided on the air delivery pipeline.

2. The glue gun according to claim 1, characterized in that: The filter assembly includes a filter screen and a fastener, the projection of the filter screen on the cross section of the air supply pipeline is greater than or equal to the cross-sectional area of ​​the air supply pipeline, and the fastener is used to fix the filter screen and the air supply pipeline.

3. The glue gun according to claim 2, characterized in that: The filter assembly includes a first filter assembly and a second filter assembly. The first filter assembly is arranged on the air supply pipeline of the air circuit valve module, and the second filter assembly is arranged on the air supply pipeline in the basic module.

4. The glue gun according to claim 3, characterized in that: The first filter assembly includes a first filter screen and a first fastener. The first filter assembly is fixedly arranged on the needle valve upper cover of the air path valve module. The needle valve upper cover is provided with a first air path through hole. The first filter screen is sealed at the first air path through hole. An installation groove is provided on the inner wall of the first air path through hole. The first fastener is arranged in the installation groove. The edge of the first filter screen is arranged between the first fastener and the inner wall of the installation groove.

5. The glue gun according to claim 4, characterized in that: The second filter assembly includes a second filter screen and a second fastener. The second filter assembly is fixedly arranged on the base of the basic module. A second air path hole is opened on the base. The second filter screen is sealed at the second air path hole. An installation groove is arranged on the inner wall of the second air path hole. The second fastener is arranged in the installation groove. The edge of the second filter screen is arranged between the second fastener and the inner wall of the installation groove.

6. The glue gun according to claim 5, characterized in that: The mesh size of the first filter screen and the second filter screen is less than 60 um.

7. The glue gun according to claim 6, characterized in that: The first filter screen adopts a circular structure, and the first fastener adopts a rubber ring.

8. The glue gun according to claim 7, characterized in that: The second filter screen adopts an elliptical structure, and the second fastener adopts a rubber ring.

9. The glue gun according to claim 8, characterized in that: The front-end module includes multiple nozzles and multiple solenoid valves, and the multiple nozzles correspond to the solenoid valves one by one. The glue delivery pipeline includes multiple glue delivery branches, and the multiple glue delivery branches are respectively connected to the glue delivery inlet, and the outlets of the multiple glue delivery branches are respectively connected to the multiple nozzles through the multiple solenoid valves.

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