Foaming gun liquid spraying shape control device

Abstract

The utility model discloses a liquid spraying shape control device of a foaming gun, which solves the problem that the existing foaming agent is single in liquid spraying shape and cannot well adapt to actual application requirements, structurally comprises a connecting seat, and is characterized in that the connecting seat is used for being connected to a gun nozzle of the foaming gun, and a sliding cavity is arranged in the connecting seat; the sliding cavity penetrates through the connecting base in the axial direction of the connecting base, the end, used for facing the gun nozzle, of the sliding cavity is a liquid inlet end, and the other end of the sliding cavity is a liquid spraying end. A sliding pipe is coaxially arranged in the sliding cavity, a flow guide through hole is axially formed in the sliding pipe, the sliding pipe and the sliding cavity are in liquid sealing, and a liquid outlet structure communicated with the flow guide through hole is arranged at the end, facing the liquid spraying end of the sliding cavity, of the sliding pipe; an actuating mechanism is arranged on the connecting seat and is used for driving the sliding pipe to axially slide in the sliding cavity, and the liquid spraying shape is controlled through the relative position change of the liquid outlet structure and the liquid spraying end.

Description

Technical Field

[0001] The utility model relates to a foaming gun, in particular to a control device on the foaming gun which can realize the control of the spray shape of the foaming agent. Background Art

[0002] Foaming agents are often used in building decoration. Foaming agents are mainly used to coat the gaps between boards or other structures. The foaming agent accumulated in the gaps will be sealed at the gaps after foaming and solidification, thus achieving sealing of the gaps. When applying the foaming agent, it is generally achieved with the help of a foaming gun. The structure of the foaming gun mainly includes a gun body and a gun barrel. A needle rod is provided in the gun barrel. A liquid cavity is provided in the gun body. An adapter is used to connect with the foaming tank. The adapter has an integrated connecting tube. A transparent channel is provided at the axial position of the connecting tube. The foaming agent sprayed from the nozzle of the foaming tank will pass through the channel and enter the liquid cavity in the gun body. A trigger is provided on the gun body, and the trigger is connected to the needle bar. When the trigger is pulled, the needle bar will move with the trigger. After the needle bar moves toward the rear side of the gun body under the drive of the trigger, a gap will be formed between the end of the needle bar and the gun nozzle provided at the outer end of the gun barrel. The foaming agent will flow out of the gap to the outside of the gun barrel. The size of the gap is related to the flow rate of the foaming agent. When the foaming agent is discharged, the foaming agent is sprayed out from the gun nozzle in the form of a columnar liquid strip, which has an obvious effect on the construction of building caulking, but for the panel bonding operation, the construction efficiency is relatively low, and there will be more hollows on the back of the panel, which will affect the bonding effect of the panel.

[0003] A Chinese patent document (publication number: CN 111151390A) discloses a liquid outlet shape control device, including a liquid inlet end and a liquid outlet end, a flow channel for liquid flow is provided between the liquid inlet end and the liquid outlet end, the liquid outlet end includes a liquid outlet, the shape of the liquid outlet is a rotationally symmetrical figure, the liquid inlet end includes a liquid inlet, the liquid inlet is provided at one end of the flow channel, a liquid outlet channel is provided between the liquid outlet and the other end of the flow channel, and the liquid outlet channel is connected to the flow channel, and the cross-sectional shapes of the liquid outlet channel at different positions along the liquid outlet direction are respectively rotationally symmetrical figures corresponding to the liquid outlet. The present invention adopts a liquid outlet with a rotationally symmetrical shape and a corresponding liquid outlet channel, so that the liquid column flowing out is subjected to the force of liquid molecules in the air, and forms a liquid column with a special shape.

[0004] This liquid shape control device is not suitable for being set on a foaming gun, and the existing foaming gun does not involve controlling the shape of the liquid spray, which makes the foaming gun spray liquid in a columnar liquid strip, and the liquid spraying method is single, which sometimes cannot adapt well to actual construction needs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a foaming gun spray shape control device, which can change the liquid outlet shape of the foaming agent and can effectively meet actual construction needs.

[0006] Technical measures taken to solve the technical problems: a device for controlling the spray shape of a foaming gun, comprising a connecting seat, characterized in that the connecting seat is used to be connected to the gun nozzle of the foaming gun, a sliding cavity is provided in the connecting seat, the sliding cavity penetrates the connecting seat in the axial direction of the connecting seat, one end of the sliding cavity facing the gun nozzle is a liquid inlet end, and the other end of the sliding cavity is a spray end; a sliding tube is coaxially provided in the sliding cavity, a guide hole is axially provided in the sliding tube, the sliding tube and the sliding cavity are liquid-tight, and a liquid outlet structure communicated with the guide hole is provided on the end of the sliding tube facing the spray end of the sliding cavity; an action mechanism is provided on the connecting seat, the action mechanism is used to drive the sliding tube to slide axially in the sliding cavity, and the control of the spray shape is achieved by the relative position change between the liquid outlet structure and the spray end.

[0007] When in use, the connection seat can be directly connected to the gun nozzle, or it can be connected to the gun nozzle through a transition piece. When not in use, the control device can be removed from the gun nozzle, so that the foaming gun can be constructed in the existing ordinary liquid spraying form. The action mechanism can be the rotating wheel structure described below, or it can be a push button structure to drive the sliding tube to slide in the sliding cavity. The foaming gun is provided with the control device, which can realize the liquid spraying form of a large area, and can also realize the liquid spraying form of a strip liquid column by retracting the outer end of the sliding tube into the connection seat.

[0008] Furthermore, a mounting port is provided on the connection seat, the sliding cavity passes through the mounting port, a rotating wheel is rotatably provided in the mounting port, the rotating wheel is sleeved on the sliding tube, and the rotating wheel is threadedly connected to the sliding tube. The sliding tube can slide in its axial direction by turning the rotating wheel, which is very convenient to operate. The sliding tube has good axial stability in the sliding cavity, which is conducive to the stability of the spray shape during construction.

[0009] Furthermore, the installation opening passes through the connection seat, and the rotating wheel protrudes to the opposite sides of the connection seat. This allows the rotating wheel to be moved from the opposite sides of the connection seat, which can well adapt to the left-handed working habits of different operators. In addition, on the basis of meeting the installation requirements of the rotating wheel, the thickness of the connection seat can also be effectively reduced, so as to effectively reduce the weight of the control device, and the setting of the control device will not affect the light use effect of the foaming gun.

[0010] Furthermore, the liquid outlet structure extends to the side of the sliding tube. By limiting the relative position between the liquid outlet structure and the sliding tube, the liquid outlet structure reacts sensitively to the change of the axial position of the sliding tube, which facilitates the adjustment of the shape of the foaming agent liquid outlet.

[0011] Furthermore, the liquid outlet structure is a liquid outlet arranged at the end of the sliding tube, and the liquid outlet penetrates the sliding tube in the radial direction of the sliding tube. The structure of the liquid outlet is simple and easy to process.

[0012] Furthermore, the liquid outlet is located at the axial position of the sliding tube and extends along the axial direction of the sliding tube. The structure of the liquid outlet is simple, which is conducive to the smooth discharge of the foaming agent.

[0013] Furthermore, the thickness of the liquid outlet is slightly smaller than the diameter of the flow-guiding hole. The difference between the two is at the millimeter level, generally not exceeding 1 mm. The size difference between the two enables the flow rate of the liquid outlet to effectively match the flow rate of the flow-guiding hole, and the shape of the liquid outlet of the foaming agent can be adjusted and shaped.

[0014] Furthermore, the connection seat is flat, which can further reduce the weight and also facilitate the connection seat to be firmly connected to the nozzle of the foaming gun.

[0015] The utility model has the following beneficial effects: the control device is provided, and the spray shape of the foaming gun can be controlled by whether the control device is installed as needed, so that the liquid discharged from the foaming gun can be sprayed in the form of columns or in the form of surfaces, thereby being able to well adapt to the requirements for the spraying method in the actual construction process and improving the construction efficiency. When the panel is pasted, the hollowing phenomenon formed on the back side of the panel can be effectively reduced on the basis of ensuring the construction efficiency. The sliding tube is coaxially arranged in the sliding cavity, and the shape of the foaming agent spray is changed by changing the relative position of the end of the sliding tube and the spray end of the connecting seat. The structure is simple and the control of the position of the sliding tube is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a reference diagram of the usage status of this control device.

[0017] Figure 2 It is an enlarged stereogram of this control device.

[0018] Figure 3 It is an exploded view of the control device in one direction.

[0019] Figure 4 It is an exploded view of the control device in another direction.

[0020] In the figure, 1, foaming gun; 2, gun nozzle; 3, connecting seat; 31, mounting port; 4, connecting nut; 5, rotating wheel; 6, O-ring; 7, sliding tube; 71, liquid outlet. DETAILED DESCRIPTION

[0021] In conjunction with the drawings in the specification, the spray shape control device of the foaming gun is generally detachably connected to the nozzle 2 of the foaming gun 1. When panel pasting construction is required, the foaming agent needs to be sprayed in the form of a surface; when caulking operations are performed, the foaming agent needs to be sprayed in the form of columns.

[0022] See Figure 3 , 4 The structure of the control device includes a block-shaped connection seat 3, and an external thread is provided on one end of the connection seat 3 facing the gun nozzle 2. The end of the connection seat 3 is inserted into the connection nut 4 and is threadedly connected with the connection nut 4. An external thread is provided on the outer peripheral surface of the gun nozzle 2 of the foaming gun 1, and the connection nut 4 is threadedly connected to the gun nozzle 2, thereby realizing the connection between the connection seat 3 and the gun nozzle 2.

[0023] A sliding cavity is provided in the connection seat 3, and the sliding cavity penetrates the connection seat 3 in the axial direction of the connection seat 3. The end of the sliding cavity facing the gun nozzle 2 is the liquid inlet end, and the foaming agent sprayed from the gun nozzle 2 will enter the liquid inlet end; the other end of the sliding cavity is the liquid spray end, and the foaming agent will be sprayed from the liquid spray end side of the sliding cavity in a certain shape. A sliding tube 7 is coaxially provided in the sliding cavity, and the sliding tube 7 is cylindrical. A guide hole is axially provided in the sliding tube 7, and the guide hole realizes the communication between the two opposite ends of the sliding tube 7. An O-ring 6 is sleeved on the outer peripheral surface of the end of the sliding tube 7 facing the gun nozzle 2, and the O-ring 6 realizes liquid sealing between the sliding tube 7 and the sliding cavity. A liquid outlet structure is provided on the end of the sliding tube 7 facing the liquid spray end of the sliding cavity, and the liquid outlet structure is communicated with the guide hole. The sliding tube 7 can slide axially in the sliding cavity, so that the relative position between the liquid outlet structure and the liquid spray end on the connection seat 3 can be changed, and the shape of the foaming agent spray can be changed.

[0024] The liquid outlet structure extends to the side of the sliding tube 7. After the sliding tube 7 is completely retracted into the connecting seat 3, the foaming agent is sprayed out in the form of columns; when the liquid outlet structure extends to the outside of the connecting seat 3, the foaming agent sprays outward from the side of the sliding tube 7, thereby forming a scattered spraying surface. The figure shows that the liquid outlet structure is a liquid outlet 71 set at the end of the sliding tube 7. The liquid outlet 71 is generally formed by machining the end of the sliding tube 7 with a milling machine. The liquid outlet 71 penetrates the sliding tube 7 in the radial direction of the sliding tube 7, and the liquid outlet 71 is rectangular. The liquid outlet 71 is located at the axial position of the sliding tube 7 and extends along the axial direction of the sliding tube 7. The thickness of the liquid outlet 71 is slightly smaller than the diameter of the guide hole, so that the pressure of the foaming agent when sprayed from the liquid outlet 71 can be effectively guaranteed. With regard to the liquid outlet 71 of this structure, when the sliding tube 7 extends to the outside of the liquid spraying end on the connecting seat 3, the foaming agent will be sprayed out in the form of a fan-shaped surface from both sides and the front end of the liquid outlet 71, and as the sliding tube 7 gradually extends outward, the area of ​​the obtained fan-shaped surface also gradually increases, thereby realizing the control of the shape of the foaming agent spray.

[0025] Of course, the liquid outlet structure can also be an oblique cutout machined at the outer end of the sliding tube 7, and the outlet end of the guide hole is an oblique structure. However, this liquid outlet structure makes the foaming agent spray out in an oblique manner, which will have a certain impact on the stability of the foaming gun 1. The liquid outlet structure can also be combined with other cross-sectional shapes of the guide hole to make certain deformations, such as the cross-sectional shape of the guide hole can be set to cotton, triangle, prism, etc., so that when in use, the foaming gun 1 can spray a variety of shapes of spray surfaces.

[0026] The connecting seat 3 is provided with an action mechanism, which is transmission-connected with the sliding tube 7. The action mechanism is used to drive the sliding tube 7 to slide axially in the sliding cavity, so as to change the relative position between the liquid outlet structure and the liquid spraying end on the connecting seat 3. As shown in the figure, the action mechanism includes a rotating wheel 5, and a mounting opening 31 is provided on the connecting seat 3. The sliding cavity passes through the mounting opening 31, and the rotating wheel 5 is rotatably mounted in the mounting opening 31. The sliding tube 7 passes through the mounting opening 31, and the rotating wheel 5 is sleeved on the sliding tube 7, and the rotating wheel 5 is threadedly connected with the sliding tube 7. As shown in the figure, the connecting seat 3 is flat, and the mounting opening 31 passes through the connecting seat 3, and the rotating wheel 5 protrudes to the opposite sides of the connecting seat 3.

Claims

1. A foaming gun spray shape control device, comprising a connecting seat, characterized in that: The connecting seat is used to be connected to the gun nozzle of the foaming gun, and a sliding cavity is provided in the connecting seat, and the sliding cavity penetrates the connecting seat in the axial direction of the connecting seat, and one end of the sliding cavity facing the gun nozzle is the liquid inlet end, and the other end of the sliding cavity is the liquid spraying end; a sliding tube is coaxially provided in the sliding cavity, and a guide hole is axially provided in the sliding tube, and the sliding tube and the sliding cavity are liquid-tight, and a liquid outlet structure communicated with the guide hole is provided on the end of the sliding tube facing the liquid spraying end of the sliding cavity; an action mechanism is provided on the connecting seat, and the action mechanism is used to drive the sliding tube to slide axially in the sliding cavity, and the shape of the liquid spraying is controlled by the relative position change between the liquid outlet structure and the liquid spraying end.

2. The foaming gun spray shape control device according to claim 1, characterized in that: The connecting seat is provided with an installation opening, the sliding cavity passes through the installation opening, a rotating wheel is rotatably provided in the installation opening, the rotating wheel is sleeved on the sliding tube, and the rotating wheel is threadedly connected with the sliding tube.

3. The foaming gun spray shape control device according to claim 2, characterized in that: The installation opening passes through the connection seat, and the rotating wheel protrudes to the opposite sides of the connection seat.

4. The foaming gun spray shape control device according to claim 1, 2 or 3, characterized in that: The liquid outlet structure extends onto the side surface of the sliding tube.

5. The foaming gun spray shape control device according to claim 4, characterized in that: The liquid outlet structure is a liquid outlet arranged at the end of the sliding tube, and the liquid outlet penetrates the sliding tube in the radial direction of the sliding tube.

6. The foaming gun spray shape control device according to claim 5, characterized in that: The liquid outlet is located at the axial position of the sliding tube and extends along the axial direction of the sliding tube.

7. The foaming gun spray shape control device according to claim 5, characterized in that: The thickness of the liquid outlet is slightly smaller than the diameter of the flow-conducting hole.

8. The foaming gun spray shape control device according to claim 4, characterized in that: The connecting seat is flat.

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