Pneumatic glue gun

Abstract

The utility model relates to a pneumatic glue gun. The pneumatic glue gun comprises a main gun body, an air cylinder arranged on the main gun body, a glue supporting frame connected with the air cylinder, and at least one push plate connected with the air cylinder and positioned in the glue supporting frame. The air cylinder comprises a cylinder body, a piston and at least one piston rod, and the piston is arranged in the cylinder body and divides the cylinder body into a first air chamber and a second air chamber. The main gun body comprises a shell, an air inlet connector, a ventilation valve body, a ventilation valve body, a ventilation handle, a first ventilation pipe, a second ventilation pipe and a ventilation button, the air inlet connector is connected with the bottom of the shell, one end of the ventilation valve body is communicated with the air inlet connector, the other end of the ventilation valve body is communicated with the ventilation valve body, and the ventilation handle is movably connected with the ventilation valve body; the two ends of the first ventilation pipe communicate with the ventilation valve body and the first air chamber correspondingly, the two ends of the second ventilation pipe communicate with the ventilation valve body and the second air chamber correspondingly, and the ventilation button is installed on the shell and used for controlling the opening and closing states of the first ventilation pipe, the second ventilation pipe and the ventilation valve body. Operation is intelligent and simple, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of glue guns, in particular to a pneumatic glue gun. Background Art

[0002] In our daily life and work, we often face various tasks involving sticking, filling, mending and coating, such as the need to bond and mend different objects together, or the need to fill, seal and repair certain holes and gaps, or the need to coat and reconstruct the surface of objects, etc. Undoubtedly, such operations all require the delivery of various paste media with extrudable flow characteristics such as adhesives, glass glue, pastes or fillers to specific target parts. As we all know, in order to facilitate storage, transportation and use, the above-mentioned paste media are usually sealed in small packages in packaging tubes or packaging bags such as hard tube shells or soft tube shells until they are needed and then squeezed out to the target area with the help of specific tools, which are usually called glue guns. At present, there are many types of glue guns, including manual glue guns that rely purely on manpower, electric glue guns driven by electric motors, and pneumatic glue guns driven by cylinders as extrusion forces. The above-mentioned glue guns are numerous and have their own advantages. Among them, pneumatic glue guns are more popular with operators for their lightness, labor-saving, easy maintenance and stable extrusion quality.

[0003] However, when the existing pneumatic glue gun needs to dismantle the original hard tube glue barrel and replace it with a new one after completing the gluing work on the hard tube glue barrel, it is generally necessary to shut off the air intake source of the cylinder and then manually push the cylinder piston rod back to the filling station. The operation is not smart, cumbersome and inefficient. Utility Model Content

[0004] Based on this, it is necessary to provide a pneumatic glue gun with intelligent, simple operation and high efficiency to address the problems existing in pneumatic glue guns.

[0005] A pneumatic glue gun, comprising: a main gun body, a cylinder mounted on the main gun body, a glue support frame connected to the cylinder, and at least one push plate connected to the cylinder and located in the glue support frame; the cylinder comprises a cylinder body, a piston and at least one piston rod, the piston is arranged in the cylinder body and divides the cylinder body into a first air chamber and a second air chamber, one end of the piston rod is fixedly connected to the piston, and the other end of the piston rod passes through the cylinder body and extends into the glue support frame to be connected to the push plate; the main gun body comprises an outer shell, an air inlet joint, a vent valve body, a gas exchange valve body, and a vent handle , a first ventilation pipe, a second ventilation pipe and a ventilation button, the air inlet connector is connected to the bottom of the outer shell, one end of the ventilation valve body is connected to the air inlet connector, the other end of the ventilation valve body is connected to the ventilation valve body, the ventilation handle is movably connected to the ventilation valve body, the two ends of the first ventilation pipe are respectively connected to the ventilation valve body and the first air chamber, the two ends of the second ventilation pipe are respectively connected to the ventilation valve body and the second air chamber, and the ventilation button is installed on the outer shell to control the open and closed states of the first ventilation pipe, the second ventilation pipe and the ventilation valve body.

[0006] The above-mentioned pneumatic glue gun can control the air pressure state of the first air chamber and the second air chamber in the cylinder body as needed by setting the air inlet joint, the ventilation valve body, the ventilation valve body, the ventilation handle, the first ventilation pipe, the second ventilation pipe and the ventilation button, so as to control the piston rod to move forward or backward. When in use, the air inlet joint is connected to the external air source, and the ventilation handle is pressed. At this time, the gas enters the first air chamber, and the piston rod moves forward under the action of the air pressure, so that the push plate squeezes the rubber cylinder to squeeze out the glue in the rubber cylinder through the glue nozzle. When a new rubber cylinder needs to be replaced, first press the ventilation button and then press the ventilation handle. At this time, the gas enters the second air chamber, and the piston rod retreats under the action of the air pressure. When the ventilation handle is first released and then the ventilation button is released, the piston rod retreats and stops. The pneumatic glue gun can coordinate the control of the air pressure state of the first air chamber and the second air chamber in the cylinder body through the ventilation handle and the ventilation button, so as to control the piston rod to move forward or backward. There is no need to manually operate the piston rod. The operation is intelligent, simple and efficient.

[0007] In one of the embodiments, a rubber cylinder fixing seat and a fixing spring are movably installed on the rubber support frame, and the end of the piston rod away from the piston passes through the fixing spring and the rubber cylinder fixing seat in sequence and is connected to the push plate, and the two ends of the fixing spring are respectively in contact with the inner wall of the rubber support frame and the end of the rubber cylinder fixing seat away from the push plate.

[0008] In one of the embodiments, the rubber cylinder fixing seat has two clamping and fixing stations, and the number of the fixing springs is two.

[0009] In one embodiment, there are two push plates and two piston rods.

[0010] In one of the embodiments, an air volume regulating valve is installed on the air inlet connector.

[0011] In one of the embodiments, the main gun body further comprises an air intake pipe installed in the outer shell, and two ends of the air intake pipe are respectively connected to the air intake joint and the ventilation valve body.

[0012] In one embodiment, first sealing rings are installed at both ends of the air intake pipe, wherein one of the first sealing rings abuts against the inner wall of the air intake connector, and the other first sealing ring abuts against the inner wall of the ventilation valve body.

[0013] In one of the embodiments, an airway guide pin is installed on the ventilation valve body, and the airway guide pin is movably connected to the ventilation handle.

[0014] In one of the embodiments, a ventilation guide pin is installed on the ventilation valve body, and the ventilation guide pin is connected to the ventilation button.

[0015] In one of the embodiments, a button spring is also installed on the ventilation valve body, and the button spring is sleeved on the ventilation button. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a pneumatic glue gun of the utility model from one viewing angle;

[0017] Figure 2 for Figure 1 The exploded schematic diagram of the main gun body in the pneumatic glue gun shown;

[0018] Figure 3 for Figure 1 A partial exploded schematic diagram of a cylinder in a pneumatic glue gun shown;

[0019] Figure 4 for Figure 1 Schematic diagram of the exploded view of the glue support frame in the pneumatic glue gun shown. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element in the middle. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element in the middle at the same time. In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments, such as "inside", "outside", "left", "right" and similar expressions are only for the purpose of explanation and are not intended to limit the present invention.

[0023] Please refer to Figures 1 to 4 , is a schematic diagram of a pneumatic glue gun 100 of the utility model, the pneumatic glue gun 100 is used in conjunction with a glue nozzle and a glue cartridge to dispense glue from the glue cartridge, wherein the pneumatic glue gun 100 of the utility model is used in conjunction with a glue nozzle and a glue cartridge to dispense glue from the glue cartridge, Figure 1 The main gun body 20 and the cylinder 30 are shown in a side view, and the rubber support frame 40 and the push plate 50 are shown in a top view.

[0024] Furthermore, the pneumatic glue gun 100 includes a main gun body 20, a cylinder 30 mounted on the main gun body 20, a glue support frame 40 connected to the cylinder 30, and at least one push plate 50 connected to the cylinder 30 and located in the glue support frame 40. The cylinder 30 can drive the push plate 50 to move in the glue support frame 40, thereby squeezing the glue in the glue cylinder on the glue support frame 40 out of the glue nozzle. The glue support frame 40 is fixed to the main gun body 20 through a fixing plate 60 with screws.

[0025] Furthermore, the cylinder 30 includes a cylinder body 31, a piston 32 and at least one piston rod 33. The piston 32 is disposed in the cylinder body 31 and divides the cylinder body 31 into a first air chamber (not shown) and a second air chamber (not shown). One end of the piston rod 33 is fixedly connected to the piston 32, and the other end of the piston rod 33 passes through the cylinder body 31 and extends into the rubber support frame 40 to be connected to the push plate 50. In order to ensure the sealing of the first air chamber and the second air chamber, a piston sealing ring 34 is installed on the piston 32, and the piston sealing ring 34 abuts against the inner wall of the cylinder body 31. In this embodiment, the first air chamber is located on the side of the piston 32 away from the rubber support frame 40, and the second air chamber is located on the side of the piston 32 close to the rubber support frame 40.

[0026] Further, the main gun body 20 includes a shell 21, an air inlet connector 22, a vent valve body 23, a gas exchange valve body 24, a vent handle 25, a first vent pipe 26, a second vent pipe 27 and a gas exchange button 28, the air inlet connector 22 is connected to the bottom of the shell 21, one end of the vent valve body 23 is connected to the air inlet connector 22, the other end of the vent valve body 23 is connected to the gas exchange valve body 24, the vent handle 25 is movably connected to the vent valve body 23, the two ends of the first vent pipe 26 are respectively connected to the gas exchange valve body 24 and the first air chamber, the two ends of the second vent pipe are respectively connected to the gas exchange valve body 24 and the second air chamber, and the gas exchange button 28 is installed on the shell 21 for controlling the opening and closing states of the first vent pipe, the second vent pipe and the gas exchange valve body 24. The shell 21 is formed by two parts of the shell being locked by screws.

[0027] Furthermore, in one embodiment, the number of the push plates 50 is two, and the number of the piston rods 33 is two, so that a two-component pneumatic glue gun can be formed, which can drive two glue cylinders to glue at the same time, thereby improving the glue efficiency. Among them, an air volume regulating valve 221 is installed on the air inlet connector 22, and the air volume regulating valve 221 is used to adjust the air volume entering from the external air source. In order to increase the service life, a few drops of lubricating oil are dripped on the interface of the air inlet connector 22.

[0028] Furthermore, the main gun body 20 also includes an air intake pipe 222 installed in the housing 21, and the two ends of the air intake pipe 222 are respectively connected to the air intake connector 22 and the air vent body 23. Specifically, first sealing rings 223 are installed at both ends of the air intake pipe 222, one of the first sealing rings 223 abuts against the inner wall of the air intake connector 22, and the other first sealing ring 223 abuts against the inner wall of the air vent body 23.

[0029] Furthermore, an airway guide pin 231 is installed on the vent valve body 23, and the airway guide pin 231 is movably connected to the vent handle 25. When the vent handle 25 is pressed, the airway guide pin 231 opens the airway of the vent valve body 23, and when the vent handle 25 is released, the airway guide pin 231 blocks the airway of the vent valve body 23. Specifically, a sealing ring and a return spring are installed on the airway guide pin 231, and the sealing ring abuts against the inner wall of the vent valve body 23.

[0030] Furthermore, a ventilation guide pin 241 is installed on the ventilation valve body 24, and the ventilation guide pin 241 is connected to the ventilation button 28. Specifically, a button spring 242 is also installed on the ventilation valve body 24, and the button spring 242 is mounted on the ventilation button 28, wherein the two ends of the pressing spring 242 are respectively in contact with the inner wall of the ventilation valve 24 and the inner wall of the end of the ventilation button 28 away from the ventilation valve body 24. When in use, when the ventilation button 28 is not pressed, the air passage of the ventilation valve body 24 is in communication with the first ventilation pipe 26 and the first air chamber, and the air passage of the ventilation valve body 24 and the second ventilation pipe 27 and the second air chamber are blocked by the ventilation guide pin 241; when the ventilation button 28 is pressed, the button spring 242 is compressed, the air passage of the ventilation valve body 24 and the first ventilation pipe 26 and the first air chamber are blocked by the ventilation guide pin 241, and the air passage of the ventilation valve body 24 is in communication with the second ventilation pipe 27 and the second air chamber. Specifically, a sealing ring is installed on the ventilation guide pin 241, and the sealing ring abuts against the inner wall of the ventilation valve body 24.

[0031] Furthermore, a rubber cylinder fixing seat 41 and a fixing spring 42 are movably mounted on the rubber support frame 40, and the end of the piston rod 33 away from the piston 32 passes through the fixing spring 42, the rubber cylinder fixing seat 41 and is connected to the push plate 50 in sequence, and the two ends of the fixing spring 42 are respectively abutted against the inner wall of the rubber support frame 40 and the end of the rubber cylinder fixing seat 41 away from the push plate 50. When in use, the rubber cylinder fixing seat 41 can move a certain distance along the length direction of the rubber support frame 40 under the action of the fixing spring 42, so as to clamp and fix the rubber cylinder in the degumming frame 4. Furthermore, the rubber cylinder fixing seat 41 has two clamping and fixing stations, and the number of the fixing springs 42 is two, so that it can form a two-component pneumatic glue gun with the push plate 50 and the piston rod 33, and can drive the two rubber cylinders to glue at the same time, thereby improving the glue application efficiency.

[0032] The pneumatic glue gun 100 can control the air pressure state of the first air chamber and the second air chamber in the cylinder body 31 as needed by setting the air inlet connector 22, the vent valve body 23, the air exchange valve body 24, the vent handle 25, the first vent pipe 26, the second vent pipe 27 and the air exchange button 28, thereby controlling the piston rod 33 to move forward or backward. When in use, the air inlet connector 22 is connected to the external air source, and the vent handle 25 is pressed. At this time, the gas enters the first air chamber, and the piston rod 33 moves forward under the action of the air pressure, thereby causing the push plate 50 to squeeze the rubber cylinder to squeeze out the glue in the rubber cylinder through the glue nozzle. When a new rubber cylinder needs to be replaced, first press the air exchange button 28 and then press the vent handle 25. At this time, the gas enters the second air chamber, and the piston rod 33 moves backward under the action of the air pressure. When the vent handle is first released and then the air exchange button 28 is released, the piston rod 33 stops moving backward. The pneumatic glue gun 100 can coordinately control the air pressure states of the first air chamber and the second air chamber in the cylinder body 31 through the ventilation handle 25 and the air exchange button 28, thereby controlling the piston rod 33 to move forward or backward. There is no need to manually operate the piston rod 33, and the operation is intelligent, simple and efficient.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pneumatic glue gun, characterized in that: include: A main gun body, a cylinder mounted on the main gun body, a rubber support frame connected to the cylinder, and at least one push plate connected to the cylinder and located in the rubber support frame; the cylinder includes a cylinder body, a piston and at least one piston rod, the piston is arranged in the cylinder body, and the cylinder body is divided into a first air chamber and a second air chamber, one end of the piston rod is fixedly connected to the piston, and the other end of the piston rod passes through the cylinder body and extends into the rubber support frame to be connected to the push plate; the main gun body includes an outer shell, an air inlet joint, a vent valve body, a gas exchange valve body, a vent handle, a first vent Tube, a second ventilation tube and a ventilation button, the air inlet connector is connected to the bottom of the shell, one end of the ventilation valve body is connected to the air inlet connector, the other end of the ventilation valve body is connected to the ventilation valve body, the ventilation handle is movably connected to the ventilation valve body, the two ends of the first ventilation tube are respectively connected to the ventilation valve body and the first air chamber, the two ends of the second ventilation tube are respectively connected to the ventilation valve body and the second air chamber, and the ventilation button is installed on the shell to control the open and closed states of the first ventilation tube, the second ventilation tube and the ventilation valve body.

2. The pneumatic glue gun according to claim 1, characterized in that: A rubber cylinder fixing seat and a fixing spring are movably installed on the rubber supporting frame, and the end of the piston rod away from the piston passes through the fixing spring and the rubber cylinder fixing seat in sequence and is connected to the push plate, and the two ends of the fixing spring are respectively in contact with the inner wall of the rubber supporting frame and the end of the rubber cylinder fixing seat away from the push plate.

3. The pneumatic glue gun according to claim 2, characterized in that: The rubber cylinder fixing seat has two clamping and fixing stations, and the number of the fixing springs is two.

4. The pneumatic glue gun according to claim 1, characterized in that: The number of the push plates is two, and the number of the piston rods is two.

5. The pneumatic glue gun according to claim 1, characterized in that: An air volume regulating valve is installed on the air inlet joint.

6. The pneumatic glue gun according to claim 1, characterized in that: The main gun body also includes an air intake pipe installed in the shell, and two ends of the air intake pipe are respectively connected to the air intake joint and the ventilation valve body.

7. The pneumatic glue gun according to claim 6, characterized in that: First sealing rings are installed at both ends of the intake pipe, wherein one of the first sealing rings abuts against the inner wall of the intake joint, and the other first sealing ring abuts against the inner wall of the ventilation valve body.

8. The pneumatic glue gun according to claim 1, characterized in that: An airway guide pin is installed on the ventilation valve body, and the airway guide pin is movably connected to the ventilation handle.

9. The pneumatic glue gun according to claim 1, characterized in that: A ventilation guide pin is installed on the ventilation valve body, and the ventilation guide pin is connected to the ventilation button.

10. The pneumatic glue gun according to claim 9, characterized in that: A button spring is also installed on the ventilation valve body, and the button spring is sleeved on the ventilation button.

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