Gas protection device

Abstract

The utility model discloses a gas protection device which comprises a shell, two gas pipe joints are fixedly connected to the bottom of the shell, a sealing plate is fixedly connected to the top of the shell, a pressing shaft in sliding connection with the sealing plate is arranged on the sealing plate in a penetrating mode, and the pressing shaft is located in the shell and in sliding connection with the shell. A gas guide column is arranged in the shell, the gas pipe connector is communicated with the gas guide column, a gas outflow groove is formed in the pressing shaft, a fixing column in sliding connection with the gas outflow groove is arranged in the gas outflow groove, the bottom of the fixing column is located in the gas guide column and fixedly connected with the gas guide column, and the outer wall of the pressing shaft is sleeved with a spring. The two ends of the spring are fixedly connected with the shell and the pressing shaft respectively. After glue dispensing is paused, inert gas can be released to prevent glue from being oxidized, air is isolated, the valve body cannot be blocked, and repeated use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of dispensing machines, in particular to a gas protection device. Background Technique

[0002] A dispensing machine, also known as a glue coating machine, a glue dropping machine, a glue applying machine, a potting machine, etc., is specifically used to control fluids; and it is an automated machine that drops and coats fluids on the surface or inside of products.

[0003] When the existing automated dispensing machine equipment is suspended from use, glue still remains in the dispensing valve cavity. When the glue contacts the air, the glue will solidify, causing the valve body to be blocked, which seriously affects the reuse. To solve the above problems, a gas protection device is proposed in this application. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a gas protection device is proposed. After the dispensing is suspended from use, it can release inert gas to prevent the glue from oxidizing, isolate the air, will not cause the valve body to be blocked, and is conducive to repeated use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A gas protection device, including a housing, two air pipe connectors are fixedly connected to the bottom of the housing, a sealing plate is fixedly connected to the top of the housing, a pressing shaft penetrating through and slidably connected to the sealing plate is arranged on the sealing plate, the pressing shaft is located inside the housing and is slidably connected to the housing, a gas guiding column is arranged inside the housing, the air pipe connector is communicated with the gas guiding column, a gas outflow groove is arranged on the pressing shaft, a fixing column slidably connected to the gas outflow groove is arranged in the gas outflow groove, the bottom of the fixing column is located inside the gas guiding column and is fixedly connected to the gas guiding column, a spring is sleeved on the outer wall of the pressing shaft, and two ends of the spring are respectively fixedly connected to the housing and the pressing shaft, a magnet ring is fixedly connected to the outer wall of the pressing shaft, a magnetic switch is fixedly connected to the housing, a first sealing ring is installed on the top of the pressing shaft, a second sealing ring is installed on the fixing column, a third sealing ring is installed on the housing, a gas flow channel is arranged at the bottom of the fixing column, a through hole is penetratingly arranged on the fixing column, and two ends of the through hole are respectively communicated with the gas flow channel and the gas outflow groove.

[0007] Preferably, an external thread is arranged on the outer wall of the top of the air pipe connector, an internal thread is arranged at the bottom of the inner wall of the gas guiding column, and the external thread is matched with the internal thread.

[0008] Preferably, the housing and the sealing plate are installed and fixed through a plurality of bolts.

[0009] Preferably, the inner wall diameter of the gas outflow groove is wider at the top and narrower at the bottom.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. Press the pressing shaft to drive the pressing shaft and the magnet ring to move downward. The downward movement of the magnet ring triggers the magnetic switch to release inert gas. The inert gas flows through the tracheal connector, the air guide column, the gas flow channel, the through hole, and the gas outflow groove, protecting the glue in the dispensing valve needle from curing.

[0012] 2. When the pressing shaft is not pressed, under the action of the spring, the pressing shaft and the magnet ring move upward to reset. At this time, the magnetic switch is not triggered and no more inert gas is released. Moreover, the upward movement of the pressing shaft can block the through hole, so that the inert gas remains in the gas flow channel, the air guide column, and the tracheal connector.

[0013] In summary, after the dispensing is paused, inert gas can be released to prevent the glue from oxidizing, isolating the air, preventing the valve body from being blocked, and facilitating repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic structural diagram of a gas protection device proposed by the present utility model;

[0015] Figure 2 FIG. is a sectional view of a gas protection device proposed by the present utility model.

[0016] In the figure: 1 housing, 2 tracheal connector, 3 sealing plate, 4 pressing shaft, 5 air guide column, 6 fixing column, 7 gas outflow groove, 8 spring, 9 magnet ring, 10 magnetic switch, 11 first sealing ring, 12 second sealing ring, 13 third sealing ring, 14 gas flow channel, 15 through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0018] Refer to Figure 1 - Figure 2 , a gas protection device, including a housing 1. Two tracheal connectors 2 are fixedly connected to the bottom of the housing 1. The outer wall of the top of the tracheal connector 2 is provided with an external thread, and the inner wall of the bottom of the air guide column 5 is provided with an internal thread. The external thread is matched with the internal thread. One end of the tracheal connector 2 is connected with inert gas, and the opening and closing of the inert gas are controlled by the magnetic switch 10.

[0019] A sealing plate 3 is fixedly connected to the top of the housing 1. The housing 1 and the sealing plate 3 are fixedly installed through a plurality of bolts. A pressing shaft 4 that is slidably connected to the sealing plate 3 penetrates through the sealing plate 3. The pressing shaft 4 is located inside the housing 1 and is slidably connected to the housing 1. By pressing the pressing shaft 4, it can move up and down.

[0020] An air guide column 5 is provided inside the housing 1. The air pipe joint 2 is communicated with the air guide column 5. An air outlet groove 7 is provided on the pressing shaft 4. The inner wall diameter of the air outlet groove 7 is wider at the top and narrower at the bottom. A fixed column 6 that is slidably connected to the air outlet groove 7 is provided inside the air outlet groove 7. The bottom of the fixed column 6 is located inside the air guide column 5 and is fixedly connected to the air guide column 5. Due to the inner wall diameter of the air outlet groove 7 being wider at the top and narrower at the bottom, when the pressing shaft 4 is pressed downwards, the through hole 15 is opened in cooperation with the wide wall of the air outlet groove 7. When the pressing shaft 4 moves upwards and resets, the through hole 15 is blocked in cooperation with the narrow wall of the air outlet groove 7.

[0021] A spring 8 is sleeved on the outer wall of the pressing shaft 4. The two ends of the spring 8 are respectively fixedly connected to the housing 1 and the pressing shaft 4, which can enable the pressing shaft 4 to move up and down. A magnet ring 9 is fixedly connected to the outer wall of the pressing shaft 4. A magnetic switch 10 is fixedly connected to the housing 1. When the pressing shaft 4 moves downwards, the magnet ring 9 can trigger the magnetic switch 10 to open for the opening and circulation of inert gas.

[0022] A first sealing ring 11 is installed at the top of the pressing shaft 4. The top of the pressing shaft 4 is connected to a dispensing valve needle tip. The first sealing ring 11 ensures the sealing performance. A second sealing ring 12 is installed on the fixed column 6 to ensure the sealing performance between the fixed column 6 and the pressing shaft 4. A third sealing ring 13 is installed on the housing 1 to ensure the sealing performance between the pressing shaft 4 and the housing 1. An air flow channel 14 is provided at the bottom of the fixed column 6. The air flow channel 14 is communicated with the air guide column 5. A through hole 15 is provided through the fixed column 6. The two ends of the through hole 15 are respectively communicated with the air flow channel 14 and the air outlet groove 7. The present utility model protects the glue in the dispensing valve needle tip from being cured by releasing inert gas.

[0023] In the present utility model, pressing the pressing shaft 4 drives the pressing shaft 4 and the magnet ring 9 to press downwards (in this process, the spring 8 is compressed). The magnet ring 9 moves downwards to trigger the magnetic switch 10 to release inert gas. The inert gas flows through the air pipe joint 2, the air guide column 5, the air flow channel 14, the through hole 15, and the air outlet groove 7 to protect the glue in the dispensing valve needle tip from being cured. When the pressing shaft 4 is not pressed, under the action of the spring 8, the pressing shaft 4 and the magnet ring 9 are driven to move upwards and reset. At this time, the magnetic switch 10 is not triggered and no longer releases inert gas, and the pressing shaft 4 moving upwards can block the through hole 15 (the through hole 15 changes from not being blocked by the wide surface to being in contact with the narrow surface for blocking), so that the inert gas remains in the air flow channel 14, the air guide column 5, and the air pipe joint 2.

[0024] Inert gas flow path: tracheal connector 2, gas guiding column 5, gas flow channel 14, through hole 15, gas outflow groove 7.

[0025] When the pressing shaft 4 moves upward, the through hole 15 abuts against the narrow surface of the gas outflow groove 7 for sealing at this time; when the pressing shaft 4 moves downward, the through hole 15 does not contact the wide surface of the gas outflow groove 7 at this time, and the through hole 15 is opened to flow inert gas.

[0026] After the dispensing of the present utility model is paused, inert gas can be released to prevent the glue from oxidizing, solving the problem that in the prior art, when an automated dispensing machine is paused, glue still remains in the dispensing valve cavity. When the glue contacts air, the glue will solidify, causing the valve body to be blocked, which seriously affects reuse.

Claims

1. A gas protection device, comprising a housing (1), characterized in that, Two air pipe connectors (2) are fixedly connected to the bottom of the housing (1). A sealing plate (3) is fixedly connected to the top of the housing (1). A pressing shaft (4) which is slidably connected to the sealing plate (3) penetrates through the sealing plate (3). The pressing shaft (4) is located inside the housing (1) and is slidably connected to the housing (1). An air guiding column (5) is formed inside the housing (1). The air pipe connector (2) is communicated with the air guiding column (5). An air outflow groove (7) is formed in the pressing shaft (4). A fixing column (6) which is slidably connected to the air outflow groove (7) is arranged in the air outflow groove (7). The bottom of the fixing column (6) is located inside the air guiding column (5) and is fixedly connected to the air guiding column (5). A spring (8) is sleeved on the outer wall of the pressing shaft (4). The two ends of the spring (8) are respectively fixedly connected to the housing (1) and the pressing shaft (4). A magnet ring (9) is fixedly connected to the outer wall of the pressing shaft (4). A magnetic switch (10) is fixedly connected to the housing (1). A first sealing ring (11) is installed at the top of the pressing shaft (4). A second sealing ring (12) is installed on the fixing column (6). A third sealing ring (13) is installed on the housing (1). An air flow channel (14) is formed at the bottom of the fixing column (6). A through hole (15) penetrates through the fixing column (6). The two ends of the through hole (15) are respectively communicated with the air flow channel (14) and the air outflow groove (7).

2. The gas protection device according to claim 1, characterized in that, External threads are provided on the outer wall of the top of the air pipe connector (2), and internal threads are provided at the bottom of the inner wall of the air guiding column (5). The external threads are matched with the internal threads.

3. A gas protection device according to claim 1, characterized in that, The housing (1) and the sealing plate (3) are fixedly installed through a plurality of bolts.

4. A gas protection device according to claim 1, characterized in that, The inner wall diameter of the air outflow groove (7) is wider at the top and narrower at the bottom.

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