A reciprocating spraying machine, a composite nozzle and a reciprocating glue spraying system for color steel sandwich panels

Abstract

The utility model discloses a reciprocating spraying machine, composite nozzle and reciprocating glue spraying system for color steel sandwich board, reciprocating spraying machine includes support body, is equipped with A glue liquid pipe, B glue liquid pipe, gas pipe and composite nozzle on the support body, is equipped with A glue liquid inlet, B glue liquid inlet, gas inlet and mixing chamber on the composite nozzle, A glue liquid pipe is connected with A glue liquid inlet on the composite nozzle, B glue liquid pipe is connected with B glue liquid inlet on the composite nozzle, gas pipe is connected with the gas inlet on the composite nozzle, be equipped with the mixing structure for mixing A glue liquid and B glue liquid in the mixing chamber, be equipped with first solenoid valve on A glue liquid pipe, be equipped with second solenoid valve on B glue liquid pipe, be equipped with third solenoid valve and throttle valve in parallel on the gas pipe. Adopt above -mentioned structure, and its intentional effect is: after shutdown, the problem that glue liquid backflow or air mixes into pipeline will not appear, and glue will not solidify in mixing chamber, ensure that the bonding quality of product is good.

Description

Technical Field

[0001] This utility model belongs to the field of color steel sandwich panel production and processing technology. Specifically, it relates to a reciprocating spraying machine, a composite nozzle, and a reciprocating adhesive spraying system for color steel sandwich panels. Background Technology

[0002] Color-coated steel sandwich panels are a new type of building envelope material that integrates load-bearing, thermal insulation, waterproofing, and decoration. They can be widely used in various construction applications, including roofs, walls, and interior / exterior wall decorations for industrial plants, public buildings, warehouses, special buildings, and large-span steel structure houses. Color-coated steel sandwich panels use color-coated steel sheets as the face material and self-extinguishing polystyrene, polyurethane, glass wool, rock wool, etc., as the core material. During production, A-adhesive and B-adhesive are typically applied to the face and face materials of the color-coated steel sheets, respectively. After coating, the specific gel time allows for reliable bonding between the sheet material and the core material. Then, through processes such as lamination and edge trimming, the color-coated steel sandwich panels are formed.

[0003] Existing color steel sandwich panels have two dispensing tubes at the dispensing station, with several dispensing nozzles evenly spaced on each tube. These nozzles are typically long, tapered tips. During forward dispensing, the axes of all nozzles are tilted downwards towards the underside of the color steel panel; during reverse dispensing, the axes of all nozzles are tilted upwards towards the topside of the color steel panel. However, existing dispensing devices have four problems in actual operation: First, if the system malfunctions and is shut down, adhesive backflow or air mixing into the pipeline is likely to occur. The viscosity characteristics of adhesive A and adhesive B in a two-component adhesive differ, and when restarting after a discontinuity, the two adhesives are difficult to deliver synchronously, easily resulting in one component arriving at the mixing point prematurely or late. This leads to discontinuous adhesive flow, frequent discontinuities, and mixing ratio deviations, ultimately affecting bonding quality. Second, if the system malfunctions and is shut down, adhesive A and adhesive B will continue to flow out, causing significant waste of raw materials and potential overflows that contaminate equipment and the working environment. Third, if the system malfunctions and other equipment on the production line requires maintenance, separate personnel are needed to collect and clean the adhesive, significantly extending maintenance time, impacting production efficiency, and increasing losses due to line downtime. Fourth, during reverse dispensing, it cannot be ensured that all conical nozzles can contact the color steel plate surface material, thus preventing the adhesive from landing on the surface material and causing mixing ratio deviations at corresponding locations, affecting product bonding quality.

[0004] Therefore, improvements are necessary. Utility Model Content

[0005] The first objective of this invention is to provide a reciprocating spraying machine for color steel sandwich panels, addressing issues such as severe glue waste, glue solidification leading to unstable quality after shutdown, and complex maintenance of the coating device when existing color steel sandwich panel production lines malfunction. The second objective of this invention is to provide a composite nozzle.

[0006] To solve the above problems, the present invention adopts the following technical solution: As a first aspect of this utility model, a reciprocating spraying machine for color steel sandwich panels includes a support body, on which an A-adhesive pipe, a B-adhesive pipe, an air pipe and a composite nozzle are provided. The composite nozzle is provided with an A-adhesive inlet, a B-adhesive inlet, an air inlet and a mixing chamber. The A-adhesive pipe is connected to the A-adhesive inlet on the composite nozzle, the B-adhesive pipe is connected to the B-adhesive inlet on the composite nozzle, the air pipe is connected to the air inlet on the composite nozzle, and the mixing chamber is provided with a mixing structure for mixing the A-adhesive and B-adhesive. The A-type adhesive tube is equipped with a first solenoid valve, the B-type adhesive tube is equipped with a second solenoid valve, and the air tube is equipped with a third solenoid valve and a throttle valve connected in parallel. The A-adhesive pipe is also equipped with a first controllable speed regulating valve; the B-adhesive pipe is also equipped with a second controllable speed regulating valve. The first and second controllable speed regulating valves ensure that, when a process in the production line malfunctions and the line resumes operation, the A-adhesive and B-adhesive are always supplied at a specific flow rate. This maintains a constant mixing ratio of the A-adhesive and B-adhesive entering the composite nozzle, preventing discontinuous adhesive flow, adhesive breaks, or mixing ratio deviations that could ultimately affect the bonding quality.

[0007] According to this utility model, the bracket body is provided with a first detection element, a second detection element, and a trigger block for limiting the spraying range of the composite nozzle. The trigger block moves synchronously with the composite nozzle. In use, the first detection element and the second detection element are triggered sequentially by the trigger block, thereby accurately controlling the spraying origin and spraying end point of the nozzle, and thus controlling the spraying range of the composite nozzle.

[0008] Both the first and second detection elements are photoelectric sensors, and the trigger block is a baffle.

[0009] The support body is provided with a telescopic arm and a drive mechanism for controlling the linear movement of the telescopic arm, and the front end of the telescopic arm is provided with the composite nozzle.

[0010] Furthermore, the drive mechanism includes a linear slide rail, a connecting member, and a motor that drives the synchronous belt to rotate. The connecting member is fixed to the synchronous belt, and a slider is provided below the connecting member, which can slide relative to the linear slide rail. The connecting member is fixed above the telescopic arm. During operation, the motor starts, driving the drive pulley to rotate, thereby driving the synchronous belt to move. The movement of the synchronous belt causes the connecting member to slide along the linear slide rail, while simultaneously driving the telescopic arm to move linearly.

[0011] According to this utility model, the composite nozzle includes a connector and a nozzle body. The nozzle body is provided with the mixing chamber, and the connector is provided with the A glue inlet, the B glue inlet, and the air inlet. The connector and the nozzle body are detachably connected.

[0012] According to this utility model, the connector and the nozzle body are threadedly connected; or, the connector and the nozzle body are snap-fit ​​connected.

[0013] Furthermore, the mixing structure is a spiral mixing structure, which consists of spiral blades. The spiral blades and the mixing chamber form a spiral mixing chamber. When the A liquid, B liquid, and gas flow through the spiral blades, they are repeatedly divided, sheared, and recombine to achieve thorough mixing. Alternatively, the spiral mixing structure can be a spiral pipe.

[0014] According to this utility model, the support body is provided with a toolbox for storage.

[0015] As a second aspect of this utility model, a composite nozzle is provided with an A-glue inlet, a B-glue inlet, an air inlet, and a mixing chamber, wherein the mixing chamber is provided with a mixing structure for mixing A-glue liquid and B-glue liquid.

[0016] According to this utility model, the composite nozzle includes a connector and a nozzle body. The nozzle body is provided with the mixing chamber, and the connector is provided with the A glue inlet, the B glue inlet, and the air inlet. The connector and the nozzle body are detachably connected.

[0017] According to this utility model, the composite nozzle further includes a nozzle head, which is fixedly or detachably connected to the nozzle body.

[0018] According to this utility model, the connector and the nozzle body are threadedly connected; or, the connector and the nozzle body are snap-fit ​​connected.

[0019] Furthermore, the mixing structure is a spiral mixing structure, which consists of spiral blades. The spiral blades and the mixing chamber form a spiral mixing chamber. When the A liquid, B liquid, and gas flow through the spiral blades, they are repeatedly divided, sheared, and recombine to achieve thorough mixing. Alternatively, the spiral mixing structure can be a spiral pipe.

[0020] As a third aspect of this utility model, a reciprocating adhesive spraying system for color steel sandwich panels includes an A-adhesive tank, a B-adhesive tank, a compressor, and the aforementioned reciprocating spraying machine for color steel sandwich panels. The B-adhesive tank is connected to the B-adhesive inlet on a composite nozzle via a B-adhesive pipe. The compressor is connected to the air inlet on the composite nozzle via an air pipe. The mixing chamber is equipped with a mixing structure for mixing the A-adhesive and B-adhesive. In use, compressed air generated by the compressor is sent into the composite nozzle through the air pipe, and the A-adhesive and B-adhesive are fully mixed together by the mixing structure.

[0021] The reciprocating spraying machine for color steel sandwich panels of this utility model has the following advantages: 1. The coordinated design of the first, second, and third solenoid valves and the throttle valve ensures that during production, the compressed air entering the mixing chamber collides and mixes with the adhesive within, simultaneously breaking the mixed adhesive into fine mist particles, ultimately providing the propulsion for forward spraying. When production stops, compressed air enters the composite nozzle directly, at high speed and with a large flow rate through the third solenoid valve. This allows for the rapid spraying of any remaining two-component adhesive from the nozzle onto the upper or lower material of the color steel sheet, preventing the adhesive from solidifying within the mixing chamber after flow ceases, thus ensuring that the composite nozzle is not clogged upon the next startup.

[0022] 2. The design of the first, second, and third solenoid valves ensures that when the production line encounters a malfunction, the first and second solenoid valves close, stopping the liquid supply. This prevents the adhesive from continuing to be supplied to the glue, avoiding problems such as adhesive backflow or air entering the pipeline. Furthermore, during startup or shutdown, it ensures that the two solenoid valves on the A and B glue pipes operate simultaneously, preventing the problem of excessive flow of one component of adhesive due to a time difference in closing, thus ensuring the instantaneous stability of the mixing ratio and consequently ensuring good bonding quality of the product. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a reciprocating spraying machine for color steel sandwich panels according to this utility model; wherein... Figure 1 The composite nozzles face upwards, used to spray onto the surface material of the color steel sheet; Figure 2 This is a structural schematic diagram of a reciprocating spraying machine for color steel sandwich panels according to this utility model; wherein... Figure 2 The composite nozzle faces downwards and is used to spray onto the underside of the color steel plate; Figure 3 This is a partial schematic diagram of the reciprocating spraying machine for color steel sandwich panels according to this utility model (for clarity, the outer shell of the reciprocating spraying machine and the toolbox below are partially omitted in the figure). Figure 4 This is a schematic diagram of the reciprocating spraying system for color steel sandwich panels according to this utility model.

[0024] Drawing number explanation: 1. Support body; 11. Telescopic arm; 12. Linear guide rail; 13. Synchronous belt; 14. Connecting parts; 15. Motor; 16. Slider; 2. A. Adhesive liquid tubing; 21. First solenoid valve; 22. First controllable speed regulating valve; 3. B-type adhesive tubing; 31. Second solenoid valve; 32. Second controllable speed control valve; 4. Trachea; 41. Third solenoid valve; 42. Throttle valve; 5. Composite nozzle; 51. A-type glue inlet; 52. B-type glue inlet; 53. Air inlet; 54. Mixing chamber; 55. Spiral blade; 56. Connector; 57. Nozzle body; 58. Spray head; 61. First detection element; 62. Second detection element; 63. Trigger block. Detailed Implementation

[0025] The specific embodiments of this utility model are further described below with reference to the accompanying drawings. This utility model is not limited to the descriptions of the following embodiments.

[0026] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0029] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0030] Example 1 like Figure 1 , Figure 2 and Figure 3As shown, a reciprocating spraying machine for color steel sandwich panels includes a support body 1. The support body 1 is provided with an A-adhesive pipe 2, a B-adhesive pipe 3, an air pipe 4, and a composite nozzle 5. The composite nozzle 5 is provided with an A-adhesive inlet 51, a B-adhesive inlet 52, an air inlet 53, and a mixing chamber 54. The A-adhesive pipe 2 is connected to the A-adhesive inlet 51 on the composite nozzle, the B-adhesive pipe 3 is connected to the B-adhesive inlet 52 on the composite nozzle, the air pipe 4 is connected to the air inlet 53 on the composite nozzle, and the mixing chamber 54 is provided with a mixing structure for mixing A-adhesive and B-adhesive. The A-type adhesive pipe 2 is equipped with a first solenoid valve 21, the B-type adhesive pipe 3 is equipped with a second solenoid valve 31, and the air pipe 4 is equipped with a third solenoid valve 41 and a throttle valve 42 connected in parallel. It should be noted that in this embodiment of the reciprocating spraying machine for color steel sandwich panels, when adhesive needs to be sprayed onto the lower material of the color steel panel, the composite nozzle faces downwards; when adhesive needs to be sprayed onto the upper material of the color steel panel, the composite nozzle faces upwards.

[0031] During production, the first solenoid valve 21 and the second solenoid valve 31 are open, the third solenoid valve 41 is closed, and the throttle valve 42 is open. Under the pump pressure of their respective pipelines, adhesive A and adhesive B flow through the open first solenoid valve 21 and second solenoid valve 31 to the compounding nozzle 5. Compressed air generated by the compressor enters the compounding nozzle 5 through the throttle valve. It should be noted that the throttle valve 42 limits the airflow and pressure to a suitable and stable value. During production, the compressed air entering the mixing chamber collides and mixes with the adhesive in the mixing chamber, simultaneously breaking the mixed adhesive into fine mist particles, ultimately providing the propulsion for forward spraying. When production stops, the first solenoid valve 21 and the second solenoid valve 31 are closed, the third solenoid valve 41 is open, and the throttle valve 42 is closed. At this time, adhesive A and adhesive B stop being fed into the mixing chamber. At the same time, compressed air enters the composite nozzle 5 directly, at high speed and with a large flow rate through the third solenoid valve 41. This is used to quickly spray the remaining two-component adhesive inside the composite nozzle onto the upper or lower material of the color steel plate, preventing the two-component adhesive from solidifying in the mixing chamber after it stops flowing, thus ensuring that the composite nozzle will not be blocked when the machine is started again.

[0032] The first solenoid valve 21 and the second solenoid valve 31 are designed so that when the production line encounters a fault, the first solenoid valve and the second solenoid valve will close and stop the liquid supply. This can prevent the glue liquid from continuing to be supplied to the adhesive and will not cause problems such as glue liquid backflow or air mixing into the pipeline.

[0033] It should be noted that the first solenoid valve 21, the second solenoid valve 31, and the third solenoid valve 41 of this utility model are directly connected to the PLC on the color steel sandwich panel production line to achieve fully automatic control. When a system malfunction occurs, multiple valves can be closed simultaneously within seconds through PLC control, preventing continuous leakage of adhesive and avoiding significant waste. Simultaneously, it will not cause a serious imbalance in the mixing ratio of adhesive A and adhesive B.

[0034] The A-adhesive pipe 2 is also equipped with a first controllable speed regulating valve 22; the B-adhesive pipe 3 is also equipped with a second controllable speed regulating valve 32. Before production, the mixing ratio of A-adhesive and B-adhesive is tested, and the flow rates of the A-adhesive pipe and the B-adhesive pipe are set by the first controllable speed regulating valve 22 and the second controllable speed regulating valve 32. The setting of the first controllable speed regulating valve 22 and the second controllable speed regulating valve 32 ensures that when the production line is restarted after a shutdown, A-adhesive and B-adhesive are always supplied at a specific flow rate, so that the mixing ratio of A-adhesive and B-adhesive entering the composite nozzle is constant, and there will be no problems such as discontinuous adhesive, adhesive breakage, or mixing ratio deviation, which will ultimately affect the bonding quality.

[0035] The reciprocating spraying machine further includes a first detection element 61, a second detection element 62, and a trigger block 63. The first detection element 61 and the second detection element 62 are mounted on the support body. The trigger block 63 moves synchronously with the composite nozzle 5. In use, the trigger block sequentially triggers the first detection element 61 and the second detection element 62, thereby precisely controlling the spray origin and spray endpoint of the nozzle, and thus controlling the spraying range of the composite nozzle 5. In this embodiment, the trigger block 63 is mounted on the connector 14, and the first detection element 61 and the second detection element 62 are mounted on a linear slide rail.

[0036] When adjusting the width, it is only necessary to adjust the installation position of the first detection element 61 and the second detection element 62 on the bracket body 1. After installation, the first detection element 61 and the second detection element 62 are fixed on the bracket body 1, and the trigger block 63 moves together with the nozzle.

[0037] The first detection element 61 and the second detection element 62 are both photoelectric sensors, and the trigger block is a baffle.

[0038] The support body is provided with a telescopic arm 11 and a drive mechanism for controlling the linear movement of the telescopic arm. The front end of the telescopic arm 11 is provided with the composite nozzle 5.

[0039] It should be noted that there are various drive mechanisms for controlling the linear movement of the telescopic arm. For example, the drive mechanism includes a linear slide rail 12, a timing belt 13, a connecting member 14, and a motor 15 that drives the timing belt 13 to rotate. The connecting member 14 is fixed to the timing belt 13, and a slider 16 is provided below the connecting member 14, which can slide relative to the linear slide rail 12. The upper part of the connecting member 14 is fixed to the telescopic arm 11. During operation, the motor 15 starts, driving the drive pulley to rotate, which in turn drives the timing belt 13 to move. The movement of the timing belt 13 causes the connecting member 14 to slide along the linear slide rail, while simultaneously driving the telescopic arm 11 to move linearly. It should be noted that in this embodiment, the connecting member 14, the trigger block 63, and the slider 16 can be integrated into one unit during processing.

[0040] The composite nozzle 5 includes a connector 56 and a nozzle body 57. The nozzle body 57 is provided with the mixing chamber. The connector 56 is provided with the A glue inlet 51, the B glue inlet 52, and the air inlet 53. The connector 56 and the nozzle body 57 are detachably connected.

[0041] It should be noted that there are several ways in which the connector 56 and the nozzle body 57 can be detachably connected: In one embodiment, the connector and the nozzle body 57 are threadedly connected.

[0042] In another embodiment, the connector and the nozzle body are snap-fitted together; In another embodiment, the connector and the nozzle body are connected by fasteners (nuts and bolts).

[0043] The mixing structure is a spiral mixing structure, which consists of a spiral blade 55. The spiral blade and the mixing chamber form a spiral mixing chamber. Under the drive of compressed air, adhesive A and adhesive B are mixed. When adhesive A, adhesive B and gas flow through the spiral blade 55, they are repeatedly divided, sheared and recombine, thereby achieving thorough mixing.

[0044] In another embodiment, the hybrid structure is a spiral pipe.

[0045] The mixing structure described in this embodiment can, in principle, be a mixing structure that utilizes fluid kinetic energy to achieve thorough mixing. This embodiment employs a spiral mixing structure, which, with the assistance of compressed gas, achieves thorough mixing. It is low in cost and simple in structure.

[0046] The support body 1 is equipped with a toolbox 7 for storage.

[0047] It should be noted that the installation position of the composite nozzle in this embodiment is adjustable. Installation grooves are provided on all four sides of the telescopic arm of the aluminum profile. When it is necessary to bond the upper material of the color steel sandwich panel to the core material, the liquid outlet of the composite nozzle is installed facing upwards (e.g., Figure 1 As shown); when bonding the lower material of the color steel sandwich panel to the core material, the composite nozzle should be installed with the liquid outlet facing downwards (as shown). Figure 2 (As shown).

[0048] Example 2 like Figure 4 As shown, a composite nozzle 5 is provided with an A-adhesive inlet 51, a B-adhesive inlet 52, an air inlet 53, and a mixing chamber 54. The mixing chamber 54 is provided with a mixing structure for mixing A-adhesive liquid and B-adhesive liquid.

[0049] The composite nozzle 5 includes a connector 56 and a nozzle body 57. The nozzle body 57 is provided with the mixing chamber 54. The connector 56 is provided with the A glue inlet 51, the B glue inlet 52 and the air inlet 53. The connector 56 and the nozzle body 57 are detachably connected for easy maintenance.

[0050] The nozzle body 57 is also provided with a nozzle head 58, which is fixedly or detachably connected to the nozzle body 57.

[0051] It should be noted that there are multiple ways in which the connector 56 and the nozzle body 57 can be detachably connected. The following example illustrates the detachable connection method between the connector 56 and the nozzle body 57: In one embodiment, the connector and the nozzle body 57 are threadedly connected.

[0052] In another embodiment, the connector and the nozzle body are snap-fitted together.

[0053] The mixing structure is a spiral mixing structure, which consists of a spiral blade 55. The spiral blade and the mixing chamber form a spiral mixing chamber. When the A liquid, B liquid and gas flow through the spiral blade 55, they are repeatedly divided, sheared and recombine, thereby achieving thorough mixing.

[0054] In another embodiment, the hybrid structure is a spiral pipe.

[0055] The mixing structure described in this embodiment can, in principle, be a mixing structure that utilizes fluid kinetic energy to achieve thorough mixing. This embodiment employs a spiral mixing structure, which, with the assistance of compressed gas, achieves thorough mixing. It is low in cost and simple in structure.

[0056] Example 3: A reciprocating spraying system for color steel sandwich panels like Figure 3As shown, a reciprocating spraying system for color steel sandwich panels includes an A-adhesive tank, a B-adhesive tank, a compressor, and the aforementioned reciprocating spraying machine for color steel sandwich panels. The B-adhesive tank is connected to the B-adhesive inlet 52 on the composite nozzle via a B-adhesive pipe 3. The compressor is connected to the air inlet 53 on the composite nozzle 5 via an air pipe 4. The mixing chamber 54 is equipped with a mixing structure for mixing the A-adhesive and B-adhesive. In use, compressed air generated by the compressor is sent into the composite nozzle through the air pipe, and the A-adhesive and B-adhesive are fully mixed together by the mixing structure.

[0057] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the protection scope of the present invention.

Claims

1. A reciprocating spraying machine for color steel sandwich panel, comprising a support body, characterized in that, The support body is provided with an A glue liquid pipe, a B glue liquid pipe, an air pipe and a composite nozzle, the composite nozzle is provided with an A glue liquid inlet, a B glue liquid inlet, an air inlet and a mixing cavity, the A glue liquid pipe is connected with the A glue liquid inlet of the composite nozzle, the B glue liquid pipe is connected with the B glue liquid inlet of the composite nozzle, the air pipe is connected with the air inlet of the composite nozzle, and the mixing cavity is provided with a mixing structure for mixing A glue liquid and B glue liquid. The A glue liquid pipe is provided with a first electromagnetic valve and a first controllable speed regulating valve, the B glue liquid pipe is provided with a second electromagnetic valve and a second controllable speed regulating valve, and the air pipe is provided with a third electromagnetic valve and a throttle valve in parallel.

2. The reciprocating spray machine for color steel sandwich panels according to claim 1, characterized in that, The support body is further provided with a first detection element, a second detection element and a trigger block for limiting the glue spraying range of the composite nozzle.

3. The reciprocating spray machine for color steel sandwich panels according to claim 1, characterized in that, The composite nozzle comprises a connector and a nozzle body, the nozzle body is provided with the mixing cavity, the connector is provided with the A glue liquid inlet, the B glue liquid inlet and the air inlet, and the connector and the nozzle body are detachably connected.

4. The reciprocating spray machine for color steel sandwich panels according to claim 1, characterized in that, The mixing structure is a spiral mixing structure, the spiral mixing structure is a spiral blade, and a spiral mixing cavity is formed between the spiral blade and the mixing cavity; or The spiral mixing structure is a spiral pipeline.

5. The reciprocating spray machine for color steel sandwich panels according to claim 1, characterized in that, The support body is provided with a tool box.

6. The reciprocating spray machine for color steel sandwich panel according to any one of claims 1-5, characterized in that, The support body is provided with a telescopic arm and a driving mechanism for controlling the linear movement of the telescopic arm, and the front end of the telescopic arm is provided with the composite nozzle.

7. A compound nozzle characterized by, The composite nozzle comprises a connector and a nozzle body, the nozzle body is fixedly or detachably connected with a nozzle head, and the connector and the nozzle body are detachably connected; The nozzle body is provided with a mixing cavity, and the mixing cavity is provided with a mixing structure for mixing A glue liquid and B glue. The connector is provided with an A glue liquid inlet, a B glue liquid inlet and an air inlet.

8. The composite nozzle of claim 7 wherein, The connector and the nozzle body are threadedly connected; or The connector and the nozzle body are buckled; or The connector and the nozzle body are detachably connected through a fixing member.

9. The composite nozzle of claim 7 wherein, The mixing structure is a spiral mixing structure, the spiral mixing structure is a spiral blade, a spiral mixing cavity is formed between the spiral blade and the mixing cavity; or The spiral mixed structure is a spiral pipeline.

10. A reciprocating glue spraying system for color steel sandwich panel, characterized in that, The composite nozzle comprises a connector and a nozzle body, the nozzle body is fixedly ordetachably connected with a nozzle head, and the connector and the nozzle body are detachably connected; A mixing cavity is arranged on the nozzle body, and a mixing structure for mixing A glue liquid and B glue liquid is arranged in the mixing cavity; The connector is provided with an A glue liquid inlet, a B glue liquid inlet and an airinlet. The connector and the nozzle body are threadedly connected; or The connector and the nozzle are buckled; or The connector and the nozzle body are detachably connected through a fixing element. The mixing structure is a spiral mixing structure, the spiral mixing structure is a spiral blade, anda spiral mixing cavity is formed between the spiral blade and the mixing cavity; or The spiral mixedstructure is a spiral pipeline. The composite nozzle comprises a connector and a nozzle body, the nozzle bodyis fixedly or detachably connected with a nozzle head, and the connector and the nozzle body aredetachably connected; A mixing cavity is arranged on the nozzle body, and a mixing structure for mixingA glue liquid and B glue liquid is arranged in the mixing cavity; The connector is provided with anA glue liquid inlet, a B glue liquid inlet and an air inlet. The connector and the nozzle are threadedly connected; or The connector and the nozzle are buckled; or Theconnector and the nozzle body are detachably connected through a fixing element. The mixing structure is a spiralmixing structure, the spiral mixing structure is a spiral blade, and a spiral mixing cavity is formedbetween the spiral blade and the mixing cavity; or The spiral mixed structure is a spiral pipeline. A glue liquid barrel, a B glue liquid barrel, a compressor and the reciprocating spraying machine for color steel sandwich panels according to any one of claims 1-6 are comprised, the B glue liquid barrel is connected with the B glue liquid inlet of the composite nozzle through a B glue liquid pipe, the compressor is connected with the air inlet of the composite nozzle through an air pipe, and a mixing structure for mixing A glue liquid and B glue is arranged in the mixing cavity.

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