A high-pressure foaming filling nozzle for PU composite panels

Abstract

The present invention discloses a high-pressure foaming filling nozzle for PU composite panels, which belongs to the field of building material processing technology. The nozzle comprises a main pipe, a plurality of branch pipes are connected to the main pipe, and a cut-off assembly is connected to the branch pipe to prevent the foaming agent from dripping; one end of the main pipe is connected to a cleaning assembly, and the cleaning assembly comprises a filler that can be inserted into the main pipe, and the filler fits the inner pipe wall of the main pipe. When the filler is inserted into the main pipe, the residual foaming agent in the main pipe is squeezed out. Through the provided filler, gas can be filled into the sealed box after the pressure is released, and the filler is squeezed into the main pipe, so that the residual foaming agent can be squeezed out during the process of the filler continuously extending into the main pipe, thereby avoiding foaming and clogging of the foaming agent in the main pipe. Through the provided extrusion assembly, the recycled filler can be squeezed to prevent the foaming agent adhering to the filler from entering the filler, so that the filler can be rolled up normally.

Description

Technical Field

[0001] The invention belongs to the technical field of building material processing, and in particular relates to a high-pressure foaming filling nozzle for a PU composite board. Background Art

[0002] PU composite board is a building material with excellent thermal insulation and fireproof properties. It is mainly used on the exterior walls of various buildings. Generally, the middle layer of PU composite board is filled with foaming agent. The foaming agent is filled between the upper and lower panels. After foaming, the upper and lower panels are combined together to form an integrated board.

[0003] PU composite panels are filled with high-pressure foaming agents, and the filling pipes have multiple outlets to ensure uniform filling of the foaming agent on the lower panel. However, due to the long foaming agent pipes, when the foaming filling and pressure relief are completed, the foaming agent in the nozzle cannot be completely discharged, and it is easy to automatically foam in the pipe, causing the nozzle to be blocked, and it takes a lot of time to clean it during use; in addition, the pipe opening is long, and after the pressure is relieved, some foaming agent is still dripping in the pipe. When transferring equipment or changing the panel type, the foaming agent is likely to drip everywhere, which is inconvenient to clean. Summary of the Invention

[0004] In view of the above problems, the present invention provides a high-pressure foaming filling nozzle for PU composite panels, which is used to solve the problems that the foaming agent is not discharged cleanly in the nozzle, is easily foamed and blocked, and the pipe mouth is prone to dripping of the foaming agent.

[0005] To achieve the above object, the present invention adopts the following technical solution: a high-pressure foaming filling nozzle for PU composite panels, comprising a main pipe, a plurality of branch pipes are connected to the main pipe, and a cut-off component for preventing foaming agent from dripping is connected to the branch pipes;

[0006] One end of the main pipe is connected to a cleaning assembly, which includes a filling piece that can be inserted into the main pipe. The filling piece fits the inner pipe wall of the main pipe. When the filling piece is inserted into the main pipe, the residual foaming agent in the main pipe is squeezed out.

[0007] As a further improvement of the above solution, the cleaning assembly further comprises a sealing box fixed to one end of the main pipe, and the sealing box is provided with an air inlet portion for inflating air into the sealing box;

[0008] The filling piece is a hose, and the filling piece is arranged outwardly and extends into the main pipe.

[0009] As a further improvement of the above solution, an air intake seat is fixed in the inner cavity of the sealing box. After the port of the filling piece passes through the air intake seat, it is turned outward and fixed on the air intake seat. The air intake seat extends into the main pipe and is sealed with the port of the main pipe.

[0010] As a further improvement of the above solution, a roller for rolling up the filling piece is rotatably provided in the sealing box; and an extrusion assembly for extruding the filling piece is provided below the roller.

[0011] As a further improvement of the above solution, the cut-off assembly includes a connector, a flexible tube and a rotating head fixedly connected to each other, and the rotating head is rotatably arranged;

[0012] The flexible tube is twisted into a spiral shape with a reduced inner diameter to prevent the foaming agent from dripping;

[0013] When the rotating head rotates, the diameter of the flexible tube is driven to expand to allow the foaming agent to pass through.

[0014] As a further improvement to the above solution, a support seat fixed to the connecting head is provided on the outer side of the rotating head, and an elastic member for pulling the rotating head to rotate and reset is provided between the support seat and the rotating head;

[0015] An extension platform is fixedly arranged on the outer side wall of the rotating head, and a limiting platform for limiting the rotation of the extension platform is fixedly arranged on the supporting seat.

[0016] As a further improvement of the above solution, when the foaming agent is introduced into the flexible tube, the support seat is pushed to rotate automatically.

[0017] As a further improvement of the above solution, a gear ring is provided on the outer ring of the rotating head, and a toggle member that can engage with the gear ring is hingedly provided inside the support seat; a motor is also provided on the support seat to engage with the gear ring through a gear.

[0018] As a further improvement of the above solution, a support rod and a sealing cover are fixedly arranged between the connector and the support seat, a number of support rods are centrally symmetrically arranged, and the sealing cover is sleeved on the outside of the support rod.

[0019] As a further improvement of the above solution, the lower end of the support seat is threadedly connected to an end head that supports the rotating head, and the end head and the rotating head rotate relative to each other.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the provided filling piece, gas can be filled into the sealed box after the pressure is released, and the filling piece is squeezed into the main pipe. As the filling piece continues to extend into the main pipe, the residual foaming agent can be squeezed out to avoid foaming and clogging of the main pipe.

[0022] 2. The extrusion wheel can be used to squeeze the recycled filling parts to prevent the foaming agent adhering to the filling parts from entering the filling parts, so that the filling parts can be rolled up normally.

[0023] 3. The cut-off component can be set to close the discharge port immediately after the pressure is released, reducing the dripping of the foaming agent at the discharge pipe. It can also prevent the foaming agent from dripping everywhere when transferring equipment or changing the plate type.

[0024] 4. The flexible tube is formed into a spiral shape by rotation and twisting, and its inner walls fit together. In the absence of pressure, the foaming agent inside will not drip. When the foaming agent is filled, the flexible tube and the rotating head can be squeezed by the foaming agent's own pressure to drive the rotating head to rotate, so that the inner diameter of the flexible tube is expanded, and automatic discharge is achieved. When the conveying is stopped, the flexible tube can continue to twist under the pull of the elastic member to cut off the foaming agent and reduce dripping.

[0025] 5. Through the provided toggle member and motor, the rotation of the rotating head can be controlled manually or automatically, and the size of the aperture in the flexible tube can be controlled, thereby adjusting the flow rate of the sprayed foaming agent. When cleaning the internal foaming agent of the main tube, the flexible tube can be opened to discharge the excess foaming agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0028] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0029] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at C in the middle;

[0030] Figure 5 This is a schematic diagram of the working state where the filling piece extends into the main pipe;

[0031] Figure 6 Schematic diagram of the exploded structure of the cut-off component;

[0032] Figure 7 Schematic diagram of the overall structure of the cut-off component;

[0033] Figure 8 This is a schematic diagram of the internal structure of the cut-off component after the cover is removed;

[0034] Figure 9 for Figure 8 Schematic diagram of the structure along the DD direction after the end is removed.

[0035] In the figure: 10, main pipe; 11, branch pipe; 13, filling piece; 14, sealing box; 141, air inlet; 15, air inlet seat; 16, roller; 17, extrusion assembly; 171, extrusion wheel; 172, connecting rod; 20, cut-off assembly; 201, connector; 202, flexible tube; 203, rotating head; 2031, gear ring; 204, support seat; 205, elastic member; 206, limiting platform; 207, extension platform; 208, toggle member; 209, motor; 210, support rod; 211, sealing cover; 212, end head. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0037] See also Figure 1-9 In a specific embodiment, a high-pressure foaming filling nozzle for a PU composite panel includes a main pipe 10, the main pipe 10 is connected to a material storage box, the main pipe 10 is connected to a plurality of branch pipes 11, and the branch pipes 11 are connected to a cut-off assembly 20 to prevent the foaming agent from dripping. When filling the foaming agent, after being introduced through the main pipe 10, it is separated through the branch pipes 11 and filled into the lower panel to ensure uniform filling of the foaming agent.

[0038] One end of the main pipe 10 is connected to a cleaning component, which is mainly used to remove the foaming agent remaining in the main pipe 10 to prevent the foaming agent from foaming and solidifying in the main pipe 10 and clogging the main pipe 10. Specifically, the cleaning component includes a filling member 13 that can be inserted into the main pipe 10. In this embodiment, the filling member 13 is a hose, and the filling member 13 is arranged outward and inserted into the main pipe 10. The filling member 13 and the inner pipe wall of the main pipe 10 are in contact with each other. During the process of the filling member 13 being inserted into the main pipe 10, the residual foaming agent in the main pipe 10 is squeezed out. Please refer to the attached figure for details. Figure 5 By squeezing the filling piece 13, the foaming agent in the main pipe 10 can be discharged outward, and when re-foaming and filling are performed, the filling piece 13 can be retracted. The filling piece 13 occupies a small area and is more convenient and quick to operate.

[0039] like Figure 1 As shown, as a preferred embodiment of the above embodiment, the cleaning assembly further includes a sealing box 14 fixed to one end of the main pipe 10, and an air inlet portion 141 for inflating the sealed box 14 is provided on the sealed box 14. The air inlet portion 141 is connected to the air source, and the air inlet portion is specifically a connection port provided. An air inlet seat 15 is fixedly provided in the inner cavity of the sealed box 14, and the port of the filling member 13 passes through the air inlet seat 15 and is fixed on the air inlet seat 15 after being turned outward. Figure 3As shown, the air inlet seat 15 extends into the main pipe 10 and is sealed with the port of the main pipe 10. By filling the sealed box 14 with air, the air pressure in the sealed box 14 can be increased. The set air inlet seat 15 can make the filled gas more easily enter the outward-turned filling member 13. By continuously filling the sealed box 14 with air, the gas will push the filling member 13 to continue to turn outward and move into the main pipe 10; and thus, the residual foaming agent in the main pipe 10 can be squeezed outward during the movement into the main pipe 10.

[0040] A roller 16 for rolling up and storing the filler 13 is provided in the sealing box 14. A driving motor is connected to the roller 16. The motor and the sealing box 14 are fixed to each other. An extrusion assembly 17 for extruding the filler 13 is provided below the roller 16. Figure 4 As shown, the specific structure is that it includes extrusion wheels 171 arranged at the upper and lower sides of the filling piece 13, a connecting rod 172 is rotatably provided between the extrusion wheels 171, and the rotating shaft of the extrusion wheel 171 on the lower side and the sealing box 14 are rotatably provided with each other, a slide groove is provided on the connecting rod 172, and a slide rod arranged up and down is slidably provided on the slide groove, a permanent magnet is fixedly provided at the end of the slide rod, and an electromagnet opposite to the permanent magnet is fixedly provided on the bottom wall of the sealing box 14. When the filling piece 13 is to be taken out of the sealing box 14, the sealing box 14 is opened. When the filling piece 13 is fed into the main pipe 10, the electromagnet can be energized by controlling the mutual repulsion between the electromagnet and the permanent magnet, so that the slide bar moves upward, thereby increasing the interval between the upper and lower extrusion wheels 171, making it more convenient to transport the filling piece 13. When the filling piece 13 is retracted, the electromagnet is energized in the opposite direction to make the slide bar move downward, thereby causing the upper and lower extrusion wheels 171 to squeeze the filling piece 13 in the middle, so as to prevent the filling piece 13 from bringing back the foaming agent when it is recovered, which makes it difficult to reel up the roller 16.

[0041] like Figure 6 As shown, as a preferred embodiment of the above embodiment, the cut-off assembly 20 includes a connector 201, a flexible tube 202, and a rotating head 203 fixedly connected to each other, and the rotating head 203 is rotatably arranged; the flexible tube 202 is twisted into a spiral shape with a reduced inner diameter to prevent the foaming agent from dripping. The flexible tube 202 is specifically a flexible hose. The twisted shape of the flexible tube 202 is manually twisted into a spiral shape during installation, and its inner diameter is 0. At this time, the state of the flexible tube 202 is the general state of the cut-off assembly 20 without any external interference, so the cut-off assembly 20 is in a normally closed state.

[0042] When the rotating head 203 rotates, the diameter of the flexible tube 202 is driven to expand to allow the foaming agent to pass through. The direction of rotation of the rotating head 203 is opposite to the twisting direction of the flexible tube 202, which can make the flexible tube 202 rotate in the opposite direction to expand the diameter of the flexible tube 202.

[0043] like Figure 1 As shown in the figure, as a preferred embodiment of the above, the outer side of the rotating head 203 is provided with a support base 204 fixed to the connecting head 201, and an elastic member 205 for pulling the rotating head 203 to rotate and reset is provided between the support base 204 and the rotating head 203. Figure 9 As shown, the elastic member 205 is specifically a spring, and can also be an elastic member with elastic expansion and contraction such as a shrapnel, an elastic rope, etc.; an extension platform 207 is fixedly provided on the outer wall of the rotating head 203, and a limiting platform 206 that limits the rotation of the extension platform 207 is fixedly provided on the support seat 204. The elastic member 205 is provided to pull the flexible tube 202 to continue to reset to a twisted state after the flexible tube 202 rotates to expand its inner diameter. The limiting platform 206 and the extension platform 207 can support each other to limit the rotating head 203, so that the rotating head 203 will not continue to move under the pull of the spring, and the flexible tube 202 can be twisted to a suitable state.

[0044] By providing the connecting head 201, the flexible tube 202 and the rotating head 203, when the foaming agent is introduced into the flexible tube 202, the pressure of the foaming agent can push the support seat 204 to rotate automatically, so as to expand the inner diameter of the flexible tube 202 to transport the foaming agent outward. After the pressure is released, the flexible tube 202 is twisted by automatically pulling and resetting the elastic member 205 to prevent the foaming agent from dripping.

[0045] like Figure 6 、 9 As shown, as a preferred embodiment of the above embodiment, a ring gear 2031 is provided on the outer ring of the rotating head 203, and a toggle member 208 that can mesh with the ring gear 2031 is hingedly provided in the support seat 204. The toggle member 208 is specifically an incomplete gear, and a force rod is connected to the incomplete gear, and the force rod passes through the support seat 204 outward to facilitate manual toggling; a motor 209 is also provided on the support seat 204, which meshes with the ring gear 2031 through a gear. Through the toggle member 208 and the motor 209, the rotating head 203 can be actively driven to rotate manually or electrically to expand the diameter of the flexible tube 202, thereby realizing the control of the output flow rate of the foaming agent, and can be opened when the foaming agent is discharged outward from the main pipe 10 to facilitate the discharge of the foaming agent from the main pipe 10.

[0046] like Figure 6 、 7As shown in FIG8 , as a preferred embodiment of the above embodiment, a support rod 210 and a sealing cover 211 are fixedly provided between the connector 201 and the support seat 204. A plurality of support rods 210 are arranged symmetrically around the center. The support rods 210, the connector 201 and the sealing cover 211 are screw-fastened to each other. The sealing cover 211 is sleeved on the outside of the support rod 210. The sealing cover 211 is split and fastened by bolts. Figure 7 , mainly for protecting the internal flexible tube 202.

[0047] The lower end of the support base 204 is threadedly connected to an end head 212 that supports the rotating head 203. The end head 212 and the rotating head 203 rotate with each other. The end head 212 is mainly used to isolate the gears, springs and other components installed in the support base 204, and to support the rotating head 203 to prevent the rotating head 203 from falling.

[0048] When the cut-off assembly 20 is used, in the absence of human interference, the self-generated pressure of the foaming agent can automatically push the flexible tube 202 and the rotating head 203 to rotate, so that the inner diameter of the flexible tube 202 is expanded, thereby realizing automatic filling of the foaming agent. After the pressure is released, the foaming agent loses pressure on the flexible tube 202, and the flexible tube 202 can continue to be twisted under the pull of the elastic member 205, so that the foaming agent inside will not drip after the pressure is released; on the other hand, it can be manually controlled by the toggle member 208 or the motor 209, which can play a role in regulating the flow rate and prevent the foaming agent from being blocked and unable to flow out when cleaning the main tube 10.

[0049] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should all be regarded as the scope of protection of the present invention.

Claims

1. A high-pressure foaming filling nozzle for PU composite panels, characterized in that: It comprises a main pipe (10), a plurality of branch pipes (11) are connected to the main pipe (10), and a cut-off component (20) for preventing the foaming agent from dripping is connected to the branch pipes (11); One end of the main pipe (10) is connected to a cleaning assembly, the cleaning assembly comprising a filling piece (13) that can be inserted into the main pipe (10), the filling piece (13) and the inner pipe wall of the main pipe (10) being in contact with each other, and when the filling piece (13) is inserted into the main pipe (10), the residual foaming agent in the main pipe (10) is squeezed out; The cleaning assembly further comprises a sealing box (14) fixed to one end of the main pipe (10), and the sealing box (14) is provided with an air inlet (141) for inflating air into the sealing box (14); The filling piece (13) is a hose, and the filling piece (13) is arranged outwardly and extends into the main pipe (10); A roller (16) for rolling up the filling piece (13) is rotatably provided in the sealing box (14); an extrusion assembly (17) for extruding the filling piece (13) is provided below the roller (16); the extrusion assembly (17) includes extrusion wheels (171) provided at upper and lower sides of the filling piece (13); a connecting rod (172) is rotatably provided between the extrusion wheels (171), and the rotating shaft of the lower extrusion wheel (171) and the sealing box (14) are rotatably provided with each other; a slide groove is provided on the connecting rod (172), and a slide rod arranged up and down is slidably provided on the slide groove; a permanent magnet is fixedly provided at the end of the slide rod, and an electromagnet opposite to the permanent magnet is fixedly provided on the bottom wall of the sealing box (14). The cut-off assembly (20) comprises a connector (201), a flexible tube (202), and a rotating head (203) that are fixedly connected to each other, and the rotating head (203) is rotatably arranged; The flexible tube (202) is twisted into a spiral shape with a reduced inner diameter to prevent the foaming agent from dripping; When the rotating head (203) rotates, the diameter of the flexible tube (202) is driven to expand so as to allow the foaming agent to pass through; A support seat (204) fixed to the connecting head (201) is provided on the outer side of the rotating head (203), and an elastic member (205) for pulling the rotating head (203) to rotate and reset is provided between the support seat (204) and the rotating head (203); An extension platform (207) is fixedly provided on the outer side wall of the rotating head (203), and a limiting platform (206) for limiting the rotation of the extension platform (207) is fixedly provided on the support seat (204).

2. The high-pressure foaming filling nozzle for PU composite board according to claim 1, characterized in that: An air intake seat (15) is fixedly provided in the inner cavity of the sealing box (14); the port of the filling member (13) passes through the air intake seat (15) and is fixed on the air intake seat (15) in an outward manner; the air intake seat (15) extends into the main pipe (10) and is sealed with the port of the main pipe (10).

3. The high-pressure foaming filling nozzle for PU composite board according to claim 1, characterized in that: When the foaming agent is introduced into the flexible tube (202), the support seat (204) is pushed to rotate automatically.

4. The high-pressure foaming filling nozzle for PU composite board according to claim 1, characterized in that: A gear ring (2031) is provided on the outer ring of the rotating head (203), and a toggle member (208) capable of meshing with the gear ring (2031) is hingedly provided inside the support seat (204); a motor (209) is also provided on the support seat (204) and meshes with the gear ring (2031) via a gear.

5. The high-pressure foaming filling nozzle for PU composite board according to claim 1, characterized in that: A support rod (210) and a sealing cover (211) are fixedly arranged between the connector (201) and the support seat (204). A plurality of support rods (210) are centrally symmetrically arranged, and the sealing cover (211) is sleeved on the outside of the support rod (210).

6. The high-pressure foaming filling nozzle for PU composite board according to claim 1, characterized in that: The lower end of the support seat (204) is threadedly connected to an end head (212) supporting the rotating head (203), and the end head (212) and the rotating head (203) rotate with each other.

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