Cooling blowing detection device

Abstract

The invention discloses a cooling blowing detection device. The device comprises a cooling module, a conveying module, an air blowing module and a detection module, the cooling module is used for cooling a workpiece, the cooled workpiece is conveyed to the air blowing module through the conveying module, the air blowing module is used for blowing air to the cooled workpiece, and the detection module is used for detecting whether the workpiece is cooled or not. The blown workpieces are conveyed to the detection module through the conveying module, and the detection module is used for conducting temperature detection on the blown workpieces. A welded workpiece in a high-temperature state is cooled through the cooling module, residual heat on the surface of the workpiece is rapidly taken away, and cooling time is shortened; the waste heat on the surface of the workpiece primarily cooled by the cooling module is blown away by the blowing module, so that the rewarming phenomenon of the workpiece due to the influence of the environment temperature in the transfer stage is avoided, and the temperature of the workpiece is stably reduced to a safe range; and the detection module accurately controls the temperature, so that the procedure connection efficiency is further guaranteed, and the overall production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling detection testing, and particularly relates to a cooling blowing detection device. BACKGROUND

[0002] In the field of household air conditioner manufacturing, the air conditioner outdoor unit as a core component, its assembly production process involves multiple precision processes, and the assembly and welding process of the four-way valve component has a key influence on product performance and production efficiency. The four-way valve component, as the core component for switching between cooling and heating modes of the air conditioner outdoor unit, is usually assembled by copper pipes, valve bodies, stainless steel silencers and other parts. After the preliminary assembly of each part is completed, the fixed connection and sealing between the components are realized through the welding process to ensure the normal operation of the subsequent air conditioning system.

[0003] At present, the industry generally adopts manual brazing process for the welding of copper pipes in the four-way valve component. The specific operation process is as follows: the worker holds a high-temperature flame gun, uses the flame to heat the filler metal to melt and fill the interface of two or more copper pipes to be welded, and completes the welding after the filler metal solidifies. However, this traditional welding process has significant technical defects and safety hazards in actual production application, and the specific problems are as follows: 1. Long cooling waiting time and low production efficiency: Because the heating temperature of the high-temperature flame gun in the brazing process is extremely high, a large amount of heat will be left on the surface of the copper pipe after welding, and the temperature needs to be naturally cooled for a long time before it can be safely touched by workers. During this cooling stage, the worker needs to wait continuously and cannot immediately take the four-way valve component after welding and operate the subsequent process, which prolongs the cycle of a single process and seriously restricts the flow efficiency of the entire air conditioner outdoor unit production line, especially in batch production scenarios, the efficiency bottleneck problem is more prominent.

[0004] 2. Inaccurate cooling completion time judgment and strong subjective operation: In the current production process, whether the copper pipe is cooled to a safe temperature completely depends on the subjective experience of the worker, and there is no objective and accurate judgment basis. Workers usually judge the cooling state by observing the color change of the copper pipe surface or by feeling the temperature through trial and error, which is easily affected by factors such as worker experience differences, workshop light and temperature, and it is difficult to accurately grasp the best time to take the material. If the judgment is too early, the copper pipe is not fully cooled, which increases the risk of subsequent operation; if the judgment is too late, it further prolongs the waiting time and exacerbates the problem of low production efficiency.

[0005] 3. Artificial operation safety hidden danger is outstanding, the influence is more remarkable in summer: when the worker judges the cooling state error, or because the production progress pressure contacts the copper pipe that has not cooled sufficiently rashly, the hand burns accident is easy to occur, causes the direct threat to the worker's personal safety. Especially in summer high temperature weather, on the one hand, the workshop environment temperature itself is higher, can reduce the worker's tolerance to high temperature and judgment; On the other hand, the high temperature environment can slow down the natural cooling speed of copper pipe, further increase the anxiety of worker in the waiting process, lead to the probability of illegal operation rise, make the risk of safety hidden danger such as burns greatly increase, not only influence the worker's operation safety, also can cause production line interruption due to the work injury accident, cause additional production loss.

[0006] In summary, the existing household air conditioner outdoor unit four-way valve component welding process, because the production efficiency is low, the safety hidden danger is big and so on problem that exists because of depending on artificial subjective judgment copper pipe cooling state, has become the key bottleneck that restricts the efficient, safe production of household air conditioner manufacturing industry, urgently needs to propose a kind of technical scheme that can accurately judge copper pipe cooling completion time, reduce artificial operation risk, to solve the above industry pain points. SUMMARY

[0007] The purpose of the present application is to overcome the deficiencies of the prior art, and to provide a cooling air blowing detection device.

[0008] In order to solve the above technical problems, the technical scheme is as follows: The cooling air blowing detection device provided by the embodiment of the present application comprises a cooling module, a conveying module, an air blowing module and a detection module, the cooling module is used for cooling the workpiece, the cooled workpiece is conveyed to the air blowing module through the conveying module, the air blowing module is used for blowing the cooled workpiece, and the blown workpiece is conveyed to the detection module through the conveying module, and the detection module is used for detecting the temperature of the blown workpiece.

[0009] In a specific embodiment, the cooling module comprises a cooling pool, a photoelectric sensor and a liquid feeding assembly, the photoelectric sensor is in communication connection with the liquid feeding assembly, the cooling pool is used for cooling the workpiece, and the photoelectric sensor is used for detecting the capacity scale line of the cooling liquid in the cooling pool; when the capacity scale line of the cooling liquid in the cooling pool is lower than a set value, the photoelectric sensor transmits a liquid supplement signal to the liquid feeding assembly, the liquid feeding assembly starts to feed liquid to the cooling pool until the capacity scale line of the cooling liquid in the cooling pool reaches the set value.

[0010] In a specific embodiment, the liquid feeding assembly comprises a liquid feeding pipe and a control switch, one end of the liquid feeding pipe is connected with an external liquid storage mechanism, the other end corresponds to the cooling pool, and the control switch is used for communication connection between the external liquid storage mechanism and the photoelectric sensor.

[0011] In an embodiment, the blowing module comprises a fixing frame corresponding to the conveying module and a blowing piece connected to the fixing frame, at least one end of the blowing piece is provided with an air inlet hole connected to an external air charging mechanism, and a side of the blowing piece facing the conveying module is provided with a plurality of air outlet holes.

[0012] In an embodiment, both ends of the blowing piece are provided with the air inlet holes, and the blowing piece is uniformly provided with 4-12 air outlet holes along the length direction.

[0013] In an embodiment, the detection module comprises a mounting frame corresponding to the conveying module, a temperature measuring instrument and a pushing cylinder, the temperature measuring instrument and the pushing cylinder are installed on the mounting frame; when the workpiece after blowing is conveyed to the temperature measuring instrument through the conveying module, the temperature measuring instrument scans and measures the temperature of the workpiece, if the temperature detection is lower than the set threshold, the workpiece is normal, if the temperature detection is higher than the set threshold, the temperature measuring instrument synchronously transmits a signal to the pushing cylinder, and the pushing cylinder starts to push the workpiece to separate from the conveying module.

[0014] In an embodiment, the detection module further comprises a material receiving table located on the opposite side of the pushing cylinder, and the pushing cylinder starts to push the workpiece to separate from the conveying module to the material receiving table.

[0015] In an embodiment, the detection module further comprises an alarm for communication connection with the temperature measuring instrument; when the temperature measuring instrument scans and measures the temperature of the workpiece and the temperature detection is higher than the set threshold, the temperature measuring instrument synchronously transmits a signal to the alarm, and the alarm starts to issue an alarm.

[0016] In an embodiment, the cooling, blowing and detection device further comprises a positioning tool module for positioning the workpiece to complete welding of the workpiece.

[0017] In an embodiment, the positioning tool module comprises a base disc, a support frame rotatably connected to the base disc and a support rod connected to the support frame, and the support rod is used for positioning the workpiece.

[0018] The cooling blowing detection device of the application has the beneficial effects compared with the prior art: the workpiece in a high-temperature state after welding is directly cooled by the cooling module, a large amount of heat remaining on the surface of the workpiece is quickly taken away, the efficiency limitation of natural cooling is broken, and the cooling time is shortened from the source; the workpiece preliminarily cooled by the cooling module is further blown to remove the residual heat on the surface of the workpiece during the transfer process of the conveying module, on the one hand, the re-warming phenomenon of the workpiece due to the influence of the ambient temperature during the transfer stage is avoided, and on the other hand, the temperature of the workpiece can be precisely controlled for the second time to ensure that the temperature of the workpiece is stably reduced to the safe range close to room temperature; the detection module precisely controls the temperature to avoid the problem of "judgment failure leading to too early / late material taking", further ensures the process connection efficiency, and finally realizes the overall production efficiency improvement of the post-processing process of the four-way valve component of the outdoor unit of the household air conditioner after welding; in addition, the detection module can perform real-time and accurate temperature detection on the workpiece after blowing, and the objective temperature data replace the subjective judgment mode of traditional manual "color observation and body feeling" - only when the detection data show that the temperature of the workpiece is reduced to the safety threshold (such as the normal temperature range that can be contacted by the human body), the workpiece will enter the subsequent manual operation link (if necessary), forming a safety control closed loop of "temperature not meeting the standard, not flowing to the manual end", eliminating the possibility of "high-temperature workpiece flowing into the manual link" from the technical level, and completely solving the safety hazard of manual scalding.

[0019] The application will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A structure schematic diagram of the cooling blowing detection device provided by the application is shown in the figure. Figure 2 A structure schematic diagram of the blowing module provided by the application is shown in the figure. Figure 3 An internal structure schematic diagram of the blowing module provided by the application is shown in the figure. Figure 4 A structure schematic diagram of the positioning tool module provided by the application is shown in the figure. Figure 5 A structure schematic diagram of the workpiece provided by the application is shown in the figure.

[0022] Reference signs: Cooling module 10, cooling pool 11, liquid feeding assembly 12, liquid feeding pipe 121, conveying module 20, blowing module 30, fixing frame 31, blowing piece 32, air inlet hole 321, air outlet hole 322, detection module 40, mounting frame 41, temperature detector 42, pushing cylinder 43, receiving table 44, alarm 45, positioning tool module 50, base disc 51, support frame 52, support rod 53, four-way valve component 60. DETAILED DESCRIPTION

[0023] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example: it can be connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0029] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0030] Referring to Figures 1 to 5 As shown, the present application discloses a specific embodiment of a cooling and blowing detection device, which comprises a cooling module 10, a conveying module 20, a blowing module 30 and a detection module 40. The cooling module 10 is used for cooling workpieces, and the cooled workpieces are conveyed to the blowing module 30 through the conveying module 20. The blowing module 30 is used for blowing the cooled workpieces, and the blown workpieces are conveyed to the detection module 40 through the conveying module 20. The detection module 40 is used for temperature detection of the blown workpieces.

[0031] Specifically, referring to Figure 5 As shown, the workpiece is a four-way valve component 60. More specifically, the cooling module 10 can adopt a "water cooling + air cooling composite cooling" structure, which is specifically arranged as follows: The cooling module 10 is composed of an annular cooling jacket, a cooling water tank, a micro circulating water pump and a heat dissipation fan; wherein the inner wall of the annular cooling jacket is adapted to the shape of the workpiece (the copper pipe welding part of the four-way valve component 60), a closed loop cooling water channel is arranged inside the annular cooling jacket, the water inlet of the cooling water channel is connected to the water outlet of the cooling water tank through a pipeline, the water outlet of the cooling water channel is connected to the water inlet of the micro circulating water pump through a pipeline, and the water outlet of the micro circulating water pump is connected to the water return port of the cooling water tank, forming a water cooling circulation system; meanwhile, 3-4 heat dissipation fans are evenly arranged on the outside of the annular cooling jacket, and the air outlet direction of the fan is opposite to the annular cooling jacket and the non-welding area of the workpiece. When the high-temperature workpiece (the surface temperature of the copper pipe is about 300-500°C) after welding is transferred to the cooling module 10, the annular cooling jacket is sleeved on the copper pipe welding part of the workpiece by artificial or mechanical arm, the micro circulating water pump is started, and the cooling water (initial temperature 20-25°C) in the cooling water tank circulates in the cooling water channel, and a large amount of heat at the copper pipe welding part is taken away through heat conduction; at the same time, the heat dissipation fan is started, and the annular cooling jacket and other areas of the workpiece are assisted by air cooling to accelerate heat diffusion; the working time of the cooling module 10 can be preset by a timer (set to 15-20 seconds according to the initial temperature of the workpiece and the target temperature drop interval), and after the preset time is reached, the annular cooling jacket automatically separates from the workpiece, and the preliminary cooling is completed.

[0032] The conveying module 20 can adopt a "chain conveyor belt + positioning clamp" structure, which is specifically set as follows: The conveying module 20 includes a stainless steel chain conveyor belt (the belt width is adapted to the size of the workpiece, the conveying speed can be adjusted, and the range is 0.5-1 m / min), a plurality of workpiece positioning clamps (uniformly fixed on the conveyor belt, the inner side of the clamp is provided with a rubber non-slip pad, matched with the shape of the valve body of the four-way valve component 60, and the quick fixing and releasing of the workpiece can be realized through the spring buckle), a conveyor belt driving motor and a travel sensor (respectively installed at the outlet of the cooling module 10, the inlet of the blowing module 30, the inlet of the detection module 40 and the outlet of the detection module 40). After the cooling module 10 completes the preliminary cooling, the cooled workpiece is placed on the conveyor belt by artificial or mechanical arm, the travel sensor detects the workpiece, sends a signal to the driving motor, the conveyor belt starts and conveys the positioning clamp with the workpiece to the inlet of the blowing module 30; at this time, the travel sensor at the inlet of the blowing module 30 triggers a signal, and the conveyor belt is paused (the pause time is synchronized with the blowing time), and after the blowing is completed, the conveyor belt starts again to convey the workpiece to the inlet of the detection module 40; the travel sensor at the inlet of the detection module 40 triggers a signal, and the conveyor belt is paused, and after the detection is completed, if the temperature meets the standard, the conveyor belt conveys the workpiece to the next process; if the temperature does not meet the standard, the conveyor belt conveys the workpiece to the return channel and returns to the cooling module 10 for recooling.

[0033] The blowing module 30 can adopt a "multi-directional airflow nozzle + constant temperature air source" structure, which is specifically set as follows: The blowing module 30 comprises four adjustable angle metal air flow nozzles (respectively installed in the upper, lower, left and right directions of the workpiece, the nozzle aperture is 5-8 mm, and the distance from the nozzle to the copper pipe area of the workpiece can be adjusted to 10-15 cm), a constant temperature fan (the outlet temperature can be set to 20-25 DEG C, the wind speed can be adjusted, and the range is 3-5 m / s), an air flow distributor (connecting the constant temperature fan and the four nozzles to realize uniform distribution of air flow), and a blowing timer (linked with the pause time of the conveying module 20). When the conveying module 20 sends the workpiece to the entrance of the blowing module 30 and pauses, the constant temperature fan starts, the normal temperature air flow of 20-25 DEG C is distributed to the four nozzles through the air flow distributor, and the nozzles blow the copper pipe area and the valve body surface of the workpiece from four directions (the blowing time is set to 10-15 seconds); during the process, the nozzle angle can be adjusted to ensure that the air flow covers the gap and corner area of the copper pipe welding place, and blows away the residual heat and tiny welding slag generated during welding; after blowing is completed, the constant temperature fan is turned off, and the conveying module 20 starts to send the workpiece to the detection module 40.

[0034] The detection module 40 can adopt an "infrared temperature measurement sensor + PLC control system" structure, and the specific settings are as follows: The detection module 40 comprises a high-precision infrared temperature measurement sensor (the measurement range is -50-600 DEG C, the accuracy is ±1 DEG C, and the sensor is installed directly above the copper pipe welding place of the workpiece, and the distance can be adjusted to 8-10 cm), a display screen (real-time display of detection temperature), a PLC controller (preset safety temperature threshold, such as ≤60 DEG C), and an alarm lamp (divided into green "qualified" and red "unqualified"); at the same time, the PLC controller is linked with the conveying module 20, and can control the flow direction of the conveying belt according to the detection result.

[0035] When the conveying module 20 sends the workpiece to the entrance of the detection module 40 and pauses, the infrared temperature measurement sensor starts, and the copper pipe welding place is measured for three times (with an interval of 1 second), and the average value is taken as the final detection temperature; if the average temperature is ≤60 DEG C (safety threshold), the PLC controller determines "qualified", the green alarm lamp is turned on, and a signal is sent to the conveying module 20, and the conveying belt starts to convey the workpiece to the next process; if the average temperature is > 60 DEG C, the PLC controller determines "unqualified", the red alarm lamp is turned on, and a signal is sent to the conveying module 20, and the conveying belt conveys the workpiece to the backflow channel and returns to the cooling module 10 for recooling; all detection data are stored through the PLC controller, and can be exported and traced at any time.

[0036] That is, through the specific implementation and coordinated linkage of the cooling, conveying, blowing, and detection modules 40 described above, the device realizes the full-process automatic processing of "high-temperature workpiece → preliminary cooling by the cooling module 10 → transfer by the conveying module 20 → secondary cooling by the blowing module 30 → transfer by the conveying module 20 → accurate temperature measurement by the detection module 40 → qualified workpiece circulation / unqualified workpiece backflow", and compared with the traditional manual operation mode, the following technical effects are achieved: the cooling module 10 directly cools the workpiece in a high-temperature state after welding, quickly removes a large amount of heat remaining on the surface of the workpiece, breaks the efficiency limit of natural cooling, and shortens the cooling time from the source; the workpiece preliminarily cooled by the cooling module 10 is further blown to remove the residual heat on the surface of the workpiece by the blowing module 30 during the transfer process of the conveying module 20, which on the one hand avoids the re-heating of the workpiece due to the influence of the ambient temperature during the transfer stage, and on the other hand accurately controls the temperature of the workpiece for the second time to ensure that the temperature of the workpiece stably decreases to a safe range close to room temperature; the accurate control of the temperature by the detection module 40 avoids the problem of "incorrect judgment leading to too early / too late material taking", further guarantees the efficiency of the process connection, and finally realizes the overall production efficiency improvement of the processing procedure after welding of the four-way valve component 60 of the household air conditioner outdoor unit; in addition, the detection module 40 can detect the temperature of the workpiece after blowing in real time and accurately, and the objective temperature data replace the subjective judgment mode of the traditional manual "color observation and body feeling" - only when the detection data show that the temperature of the workpiece decreases to a safe threshold (such as the normal temperature range that can be contacted by the human body), the workpiece will enter the subsequent manual operation link (if necessary), forming a safe control closed loop of "temperature not meeting the standard, then not circulating to the manual end", which technically eliminates the possibility of "high-temperature workpiece flowing into the manual link", and completely solves the safety hazard of manual scalding.

[0037] In an embodiment, the cooling module 10 comprises a cooling pool 11, a photoelectric sensor, and a liquid feeding assembly 12, the photoelectric sensor is in communication connection with the liquid feeding assembly 12, the cooling pool 11 is used for cooling the workpiece, and the photoelectric sensor is used for detecting the capacity scale line of the cooling liquid in the cooling pool 11; when the capacity scale line of the cooling liquid in the cooling pool 11 is lower than a set value, the photoelectric sensor transmits a liquid supplement signal to the liquid feeding assembly 12, and the liquid feeding assembly 12 starts to feed the cooling pool 11 until the capacity scale line of the cooling liquid in the cooling pool 11 reaches the set value.

[0038] Specifically, referring to Figure 1As shown, the cooling pool 11 is integrally stamped from stainless steel material, and has a structure of a "rectangular groove body". The specific size is adapted to the shape of the workpiece. An arc-shaped groove is arranged at the bottom of the groove body (matching the profile of the bottom of the workpiece valve body) for positioning the workpiece to avoid displacement of the workpiece during cooling. Capacity scale lines are marked on the inner side wall of the groove body along the height direction. The lowest scale line ("water replenishment threshold line") corresponds to the position where the workpiece copper pipe welding part can be completely immersed, and the highest scale line ("full liquid threshold line") corresponds to a 4cm deep space reserved for overflow. At the same time, a drain valve is arranged at one side of the bottom of the groove body for regular replacement of the cooling liquid (such as once every 7 days to prevent the accumulation of impurities in the water affecting the cooling effect). Before use, the cooling pool 11 is first filled with normal temperature tap water (initial temperature 20-25°C, low cost and easy to obtain) until the liquid level reaches the "full liquid threshold line". At this time, the cooling liquid can completely cover the workpiece placed in the arc-shaped groove, ensuring the cooling contact area. In addition, a diffuse reflection type infrared photoelectric sensor (detection accuracy ±0.5mm, response time ≤10ms) is fixed on the outer side wall of the cooling pool 11 through a support. The detection head of the sensor is directly opposite the "water replenishment threshold line" on the inner side of the groove body. The sensor has a built-in signal processing unit, which can preset the trigger condition of "liquid level below threshold value", and is in communication connection with the controller of the liquid feeding assembly 12 through wires to realize real-time signal transmission. The sensor scans the liquid level in the cooling pool 11 by emitting infrared light: when the liquid level is higher than the "water replenishment threshold line", the infrared light is reflected by the cooling liquid, and the sensor determines that the "liquid level is normal" and does not send a signal; when the cooling liquid evaporates for a long time and the liquid level is lower than the "water replenishment threshold line", the infrared light cannot be effectively reflected (or the reflection intensity is lower than the preset value), and the sensor immediately determines that the "liquid level is insufficient" and sends a high-level liquid replenishment signal to the liquid feeding assembly 12. At the same time, the sensor also synchronously scans the profile of the workpiece in the cooling pool 11 (by identifying the boundary between the workpiece and the cooling liquid through infrared light), and secondarily confirms whether the "current liquid level has failed to cover the workpiece copper pipe welding part", to avoid false triggering of liquid replenishment due to "low pool liquid level when the workpiece is not placed".

[0039] The liquid feeding assembly 12 comprises a liquid storage tank (stainless steel, with a liquid inlet at the top and a liquid outlet at the bottom), a micro electromagnetic pump (adjustable flow, rated flow 1 L / min, voltage 220V), a liquid supplement pipeline (PVC pipe, one end connected to the water outlet of the electromagnetic pump, the other end extending to the top of the cooling pool 11, with a splash-proof nozzle at the pipe opening), and a controller (with a signal receiving module, which can receive the liquid supplement signal of the photoelectric sensor and control the start and stop of the electromagnetic pump). When the controller receives the "low liquid level" signal from the photoelectric sensor, the micro electromagnetic pump is immediately started, and the tap water in the liquid storage tank is injected into the cooling pool 11 through the liquid supplement pipeline and the splash-proof nozzle. During the liquid supplement process, the photoelectric sensor continuously monitors the liquid level, and when the liquid level rises to the "full liquid threshold line", the sensor sends a "liquid level meets the standard" signal to the controller. After receiving the "liquid level meets the standard" signal, the controller immediately turns off the micro electromagnetic pump and stops the liquid supplement. If the liquid level in the liquid storage tank is too low (an additional water tank liquid level sensor can be provided), the controller will trigger an audible and visual alarm to remind the operator to supplement tap water to the tank to ensure the continuous availability of the liquid feeding assembly 12.

[0040] That is, the conventional cooling pool 11 relies on manual periodic inspection of the liquid level, and if the worker is negligent (such as rapid evaporation in summer without timely water replenishment), it will cause the cooling liquid to fail to cover the copper pipe welding position of the workpiece, resulting in a "local non-cooling" phenomenon - not only prolonging the cooling time, but also possibly affecting the subsequent welding sealing due to the high temperature of the local workpiece. In the present embodiment, the photoelectric sensor monitors the liquid level in real time, and cooperates with the liquid feeding assembly 12 to automatically supplement liquid, so as to ensure that the liquid level in the cooling pool 11 is always maintained within the range of "completely covering the workpiece", without the need for manual intervention to ensure the continuous and effective cooling process, and to avoid cooling failure or workpiece quality problems caused by liquid level problems.

[0041] In one embodiment, the liquid feeding assembly 12 comprises a liquid feeding pipe 121 and a control switch, one end of the liquid feeding pipe 121 is connected to an external liquid storage mechanism, the other end corresponds to the cooling pool 11, and the control switch is used for communication connection between the external liquid storage mechanism and the photoelectric sensor.

[0042] Specifically, the liquid delivery pipe 121 is made of silica gel, which has the characteristics of high temperature resistance (-40°C~200°C), aging resistance, and strong flexibility. It can meet the delivery requirements of the cooling liquid in the cooling pool 11 at room temperature, and can also avoid cracking and odor after long-term contact with water. At the same time, the inner wall of the silica gel pipe is smooth and less likely to retain impurities, which can reduce the risk of blockage during the delivery of the cooling liquid. In addition, one end of the liquid delivery pipe 121 is connected to the external liquid storage mechanism (such as the liquid outlet of the workshop centralized liquid supply pipeline or an independent liquid storage tank) through a quick connector. The quick connector has a built-in rubber sealing ring to ensure that there is no leakage at the connection. The other end extends above the cooling pool 11, and the pipe opening is equipped with an L-shaped metal flow guide nozzle. The outlet of the flow guide nozzle is inclined downward and aligned with the inner side wall of the cooling pool 11 (about 10 cm away from the liquid surface), which can prevent the cooling liquid from directly impacting the workpiece during liquid replenishment, causing the workpiece to shift, and also prevents the liquid surface from splashing and polluting the workshop environment. In addition, the middle section of the liquid delivery pipe 121 is fixed to the workshop support through a pipe clamp to prevent the pipe opening from shifting due to pipe shaking and ensure the stability of the liquid replenishment position.

[0043] The control switch is an electromagnetic control valve (voltage 220V, diameter 10mm, matching the inner diameter of the liquid delivery pipe 121). It has a built-in signal receiving module and a valve core driving unit, which are connected to the liquid supply pump of the external liquid storage mechanism (or directly connected to the liquid outlet of the independent liquid storage tank) through wires. The electromagnetic control valve can receive the electrical signals sent by the photoelectric sensor and control the opening and closing of the valve core according to the signal instructions. When the "low liquid level" signal is received, the valve core opens to allow the cooling liquid to flow. When the "liquid level meets the standard" signal is received, the valve core closes to cut off the cooling liquid delivery.

[0044] The linkage process of the electromagnetic control valve and the photoelectric sensor is as follows: the photoelectric sensor monitors the liquid level of the cooling pool 11 in real time. When the liquid surface is below the "water replenishment threshold line", it sends a continuous high-level signal to the electromagnetic control valve. After receiving the high-level signal, the valve core of the electromagnetic control valve opens quickly within 0.5 seconds, and the cooling liquid from the external liquid storage mechanism is injected into the cooling pool 11 through the liquid delivery pipe 121 and the flow guide nozzle. When the liquid level of the cooling pool 11 rises to the "full liquid threshold line", the photoelectric sensor switches to a low-level signal. After receiving the low-level signal, the valve core of the electromagnetic control valve closes within 0.3 seconds, and the liquid replenishment stops. At the same time, the electromagnetic control valve also has a manual emergency switch (installed on the outside of the valve body). When the automatic control fails, workers can directly control the liquid replenishment through the manual switch to ensure uninterrupted production.

[0045] That is, compared with the traditional liquid delivery assembly 12 containing a liquid storage tank and a miniature electromagnetic pump, the present embodiment directly utilizes an external liquid storage mechanism (such as an existing liquid supply system in a workshop) to realize cooling liquid supply through the simplified design of “liquid delivery pipe 121 + electromagnetic control valve”, thereby reducing the procurement and installation costs of components such as the liquid storage tank and the pump body; at the same time, the reduction in the number of components reduces the failure points (such as the motor and impeller of the pump body that do not need to be maintained), and only the aging of the liquid delivery pipe 121 and the jamming of the electromagnetic control valve core need to be checked daily, thereby reducing the maintenance workload and the equipment operation and maintenance pressure of the production line.

[0046] In an embodiment, the blowing module 30 comprises a fixed frame 31 corresponding to the conveying module 20 and a blowing piece 32 connected to the fixed frame 31, at least one end of the blowing piece 32 is provided with an air inlet hole 321 connected to an external air charging mechanism, and a side of the blowing piece 32 facing the conveying module 20 is provided with a plurality of air outlet holes 322.

[0047] Specifically, referring to Figures 1 to 3 As shown, the fixed frame 31 is welded by a stainless steel square tube and has a “door type” frame structure as a whole, that is, vertical support columns on both sides (adapted to the width of the conveying belt of the conveying module 20), and a horizontal beam at the top (slightly longer than the width of the conveying belt, and each end is extended by 10 cm). The square tube has sufficient structural strength and can avoid frame deformation caused by long-term stress or workshop vibration. The bottom of the support column is fixed to the ground of the workshop (connected to the foundation embedded parts on both sides of the conveying belt) through expansion bolts, so as to ensure that the relative position of the fixed frame 31 and the conveying module 20 is stable and has no displacement deviation. Long strip adjusting holes are formed on the horizontal beam along the length direction, the blowing piece 32 is connected to the adjusting holes through bolts, and the left-right position and the up-down height of the blowing piece 32 on the horizontal beam can be flexibly adjusted according to the width and height of the workpiece, so as to ensure that the air outlet holes 322 of the blowing piece 32 can accurately align with the core cooling area of the workpiece (such as the copper pipe welding position of the four-way valve component 60).

[0048] The blowing member 32 is a stainless steel rectangular tube (length matching the width of the conveying belt), which has the characteristics of corrosion resistance and air flow impact resistance, and is suitable for long-term use in a humid workshop environment. One end of the rectangular tube (non-air inlet end) is sealed with a sealing end cover welded to prevent air leakage; the other end (air inlet end) is welded with an external threaded joint, which is sealed and connected to the external inflation mechanism (such as a workshop high-pressure air pump, with adjustable air pressure of 0.3-0.5 MPa) through an air pipe quick connector. The side of the blowing member 32 facing the conveying module 20 (i.e. the downward side) is evenly provided with a plurality of air outlets 322 along the length direction: the air outlets 322 can be processed at a downward 45° angle (45° angle with the side of the blowing member 32), so that the air flow can act on the surface of the workpiece obliquely, rather than vertically impacting - which not only expands the air flow coverage, but also avoids the workpiece from being offset on the conveying belt due to vertical air flow. At the same time, a flow regulating valve is installed on the air path of the external inflation mechanism, which can adjust the air flow intensity of the blowing member 32 (range 5-10 m / s) according to the cooling needs of the workpiece and the surface moisture, and realize on-demand air supply. When the conveying belt of the conveying module 20 conveys the workpiece (surface attached with moisture) cooled by the cooling pool 11 to the position below the "gate-type" fixing frame 31, the external inflation mechanism continuously supplies high-pressure gas to the blowing member 32, which is blown to the surface of the workpiece at a 45° angle through the air outlets 322: on the one hand, the air flow takes away the residual heat of the workpiece, further cooling it; on the other hand, the air flow quickly blows away the residual moisture (water droplets attached after cooling by the cooling pool 11) on the surface of the workpiece, avoiding the moisture from being brought into the subsequent detection module 40 or assembly process. The time of the workpiece passing through the blowing area is about 5-8 seconds (controlled by the conveying belt speed), ensuring that the air flow has sufficient time to complete the cooling and drying.

[0049] That is, in the traditional process, the workpiece needs to be separately set up after cooling in the cooling pool 11 "dry process" (manual cloth wiping surface moisture), or wait for natural drying (time-consuming 1-2 minutes), increasing the process complexity and time cost. The air blowing piece 32 of the embodiment can complete the secondary cooling and surface water removal of the workpiece by "one-time air blowing to achieve cooling+drying", without additional process, shortening the post-processing time of single workpiece; at the same time, the airflow cooling further reduces the temperature difference between the workpiece and the room temperature, providing favorable conditions for accurate temperature measurement of the subsequent detection module 40, and reducing the detection error caused by temperature fluctuation. In addition, the air outlets 322 are uniformly distributed and have a uniform angle, so that the airflow can uniformly cover the surface of the workpiece, avoiding the local airflow dead angle (such as the edge area of the workpiece) existing in the traditional "single nozzle air blowing", ensuring that the cooling amplitude and drying effect of each workpiece are consistent. The 45° oblique air outlet 322 design reduces the horizontal impact force of the airflow on the workpiece to the minimum, and cooperates with the positioning clamp on the conveying belt, which can effectively avoid the workpiece from deviating or tilting during air blowing, and reduce the loss caused by workpiece collision, such as valve body deformation and copper pipe bending. In addition, the external air charging mechanism and the air blowing piece 32 form a continuous air supply mode, without manual start-stop operation. When the workpiece passes, it automatically receives airflow treatment, and after the workpiece leaves, it still maintains continuous air blowing (to avoid the air outlet 322 being blocked by the reverse suction of impurities due to instantaneous air stop), without the need for workers to stay on duty. Compared with the traditional manual air gun blowing, the manual labor is completely liberated, the labor cost is reduced, and the processing effect difference caused by inconsistent manual operation force and angle is avoided.

[0050] In an embodiment, both ends of the air blowing piece 32 are provided with the air inlet hole 321, and the air blowing piece 32 is uniformly distributed with 4-12 air outlet holes 322 along the length direction.

[0051] Specifically, the air blowing piece 32 is welded with an external threaded joint at both ends as the air inlet hole 321, and the two end joints are consistent in specification, which can be connected to the branch valve of the external air charging mechanism through the air pipe quick connector. The branch valve is connected with the workshop high-pressure air pump, which can uniformly distribute the high-pressure gas to the two air inlet holes 321 of the air blowing piece 32, ensuring that the gas enters the inside of the air blowing piece 32 from both ends at the same time. At the same time, a flow regulating valve is separately installed on the air pipe of each air inlet hole 321, which can fine-tune the air inlet amount of both ends according to the actual demand, and ensure the balance of the air pressure in the air blowing piece 32. According to the width specification of the workpiece (for example, four-way valve parts 60 with a width of about 10 cm correspond to 4 air outlet holes 322, and large parts with a width of about 30 cm correspond to 12 air outlet holes 322), the air outlet holes 322 are equally spaced along the length direction on the side (downward side) of the air blowing piece 32 facing the conveying module 20.

[0052] That is, compared with the single inlet hole 321 design, the double inlet hole 321 synchronously supplies gas from both ends of the blowing piece 32, which can avoid the problem of "high gas pressure at the near end and low gas pressure at the far end" caused by resistance in long-distance gas transportation. In addition, the modular layout of 4-12 outlet holes 322 enables the same blowing piece 32 to adapt to different width and size of four-way valve components 60 by adjusting the number of outlet holes 322 (or selecting the corresponding hole position to block the unused outlet holes 322). For example, 4 outlet holes 322 are used when producing small workpieces to avoid gas waste; 12 outlet holes 322 are used when producing large workpieces to ensure full coverage. In addition, the double inlet hole 321 cooperates with the equidistant outlet hole 322 to form a stable "parallel gas flow field", and the angle of the downward inclined outlet hole 322 further reduces the horizontal impact force of the gas flow on the workpiece while expanding the coverage range.

[0053] In an embodiment, the detection module 40 includes a mounting frame 41 corresponding to the conveying module 20, a temperature measuring instrument 42 and a pushing cylinder 43 installed on the mounting frame 41; when the workpiece after blowing is conveyed to the temperature measuring instrument 42 by the conveying module 20, the temperature measuring instrument 42 scans and measures the temperature of the workpiece, if the temperature detection is lower than the set threshold, the workpiece is normal, if the temperature detection is higher than the set threshold, the temperature measuring instrument 42 synchronously transmits the signal to the pushing cylinder 43, and the pushing cylinder 43 starts to push the workpiece to separate from the conveying module 20.

[0054] Specifically, referring to Figure 1As shown, the mounting rack 41 adopts an aluminum alloy profile splicing structure, and is in the shape of "L" as a whole - the vertical section is fixed on the workshop floor on the side of the conveying belt of the conveying module 20 through expansion bolts, and the horizontal section extends upwards above the conveying belt (parallel to the plane of the conveying belt). A T-shaped sliding groove is formed in the bottom of the horizontal section along the length direction of the conveying belt, and the temperature measuring instrument 42 and the pushing cylinder 43 are connected through the sliding block and the sliding groove, so that the transverse distance can be flexibly adjusted according to the position of the workpiece on the conveying belt (adjustment range ±15 cm); at the same time, a locking knob is arranged on the sliding block, and the component position can be fixed by tightening the knob after adjustment, so as to ensure that the temperature measuring instrument 42 and the pushing cylinder 43 are always aligned with the detection area and the pushing point of the workpiece. The temperature measuring instrument 42 selects an online infrared temperature measuring instrument 42 (measurement range -20℃~500℃, accuracy ±0.8℃), which is installed on the sliding block of the sliding groove of the horizontal section of the mounting rack 41 through a support, and the temperature measuring probe is vertically downward, and the distance from the workpiece on the conveying belt is kept at 15 cm (the best temperature measuring distance calibrated). The temperature measuring instrument 42 is provided with a built-in laser sight, which can accurately position the copper pipe welding position (core temperature measuring point) of the workpiece through a red laser point; at the same time, a signal output module is provided, which is connected in communication with the controller of the pushing cylinder 43 and the PLC system of the workshop production line through wires, can transmit the temperature data to the PLC system in real time, and send a trigger signal to the pushing cylinder 43 immediately when the temperature exceeds the threshold value. The temperature threshold value of the temperature measuring instrument 42 can be set through the matching software (combined with the safe contact temperature of the workpiece, preset to ≤55℃), and the online modification of the threshold value parameter is supported.

[0055] The pushing cylinder 43 selects a small pneumatic sliding table cylinder, which is installed on the downstream side of the temperature measuring instrument 42 along the conveying direction of the conveying belt (20 cm away from the temperature measuring instrument 42, to ensure enough judgment time after the temperature measurement is completed), the piston rod of the cylinder faces the inside of the conveying belt, and an arc-shaped rubber push head is installed at the end of the piston rod (the arc is matched with the outer profile of the workpiece valve body to avoid damaging the surface of the workpiece during pushing). The gas inlet end of the cylinder is connected with the compressed air pipeline of the workshop, and is linked with the signal output module of the temperature measuring instrument 42 through an electromagnetic valve: when receiving the "temperature threshold value" signal sent by the temperature measuring instrument 42, the electromagnetic valve is powered on and reversed, the compressed air drives the piston rod to extend, and the unqualified workpiece is pushed from the conveying belt to the opposite inclined tool table (the distance between the tool table and the side of the conveying belt is 5 cm, and the inclination angle of the table top is 10°, and the workpiece can automatically slide to the storage basket at the bottom of the table after being pushed on); after the pushing is completed, the electromagnetic valve is powered off and reset, the piston rod is retracted to the initial position, and waits for the next trigger signal.

[0056] That is, compared with the traditional artificial subjective judgment temperature, the high-precision scanning (accuracy ±0.8℃) and laser aiming positioning of the infrared thermometer 42 ensure that the temperature measurement data truly reflect the core area temperature of the workpiece, avoiding misjudgment caused by inaccurate temperature measurement; at the same time, the fast response of the pushing cylinder 43≤0.2 seconds can complete the diversion at the moment when the unqualified workpiece reaches the pushing position, preventing high-temperature workpieces from flowing into the subsequent manual operation link. In addition, the cooperation of the arc-shaped rubber push head and the inclined tooling table not only avoids scratching and damaging the surface of the workpiece during pushing, but also realizes the directional storage of unqualified workpieces, preventing the workpiece from falling to the ground and causing deformation or damage. At the same time, the unqualified workpieces in the storage basket can be concentrated for secondary cooling treatment, without the need to find scattered unqualified products separately, reducing the increase of production cost caused by workpiece loss.

[0057] In an embodiment, the detection module 40 further comprises a receiving table 44 located on the opposite side of the pushing cylinder 43, which starts to push the workpiece away from the conveying module 20 to the receiving table 44.

[0058] Specifically, the receiving table 44 adopts a multi-layer steel structure frame design, with a distance of 5cm between the edge of the conveying belt on the opposite side of the pushing cylinder 43, ensuring that the workpiece pushed by the pushing cylinder 43 can accurately fall into the table body. The frame body is made of 4cm×4cm angle steel welded together, and 4 universal wheels with brakes are installed at the bottom, which can be flexibly adjusted according to the layout of the production line, and after adjustment, the brake can be locked to fix it. The receiving table 44 is internally provided with three layers of buffer storage structure from top to bottom: the uppermost layer is an inclined guide plate (inclination angle 12°, made of 2mm thick stainless steel plate, with 5mm thick silicone buffer pad pasted on the surface), the edge of the guide plate is flush with the side of the conveying belt, and the workpiece is first dropped on the guide plate after being pushed out by the pushing cylinder 43, and the impact is reduced through the double action of the inclination angle and the silicone pad; the middle layer is a diversion partition plate (2 evenly arranged along the length direction of the guide plate, dividing the space below the guide plate into 3 storage areas), which is used for preliminary classification of unqualified workpieces of different specifications; the lower layer is a drawer type storage box (3, corresponding to the 3 storage areas of the middle layer, the box body is made of transparent acrylic material, and a label slot is provided on the front surface, which can be marked with categories such as “to be cooled again” and “to be rechecked”), and the storage box is installed with a slide rail at the bottom, which can be directly pulled out, facilitating subsequent concentrated processing. In addition, a limiting baffle is provided at the end of the guide plate of the receiving table 44 to prevent the workpiece from sliding off the end of the guide plate due to inertia; a protective fence is installed on the outside of the frame to prevent the workpiece from falling off when transferring the receiving table 44.

[0059] That is, compared with the design of the traditional inclined tooling table that relies on the natural sliding of the inclination, the silicone buffer guide plate and the limiting baffle of the material receiving table 44 can effectively reduce the impact during the workpiece pushing process, avoiding the concave and deformation of the valve body and copper pipe on the surface of the workpiece due to collision. The transparent acrylic material of the drawer-type storage box can not only directly observe the number of workpieces inside, but also prevent the workpieces from scratching each other during storage. In addition, the design of the middle layer shunt baffle and the classification storage box can preliminarily classify the unqualified workpieces according to actual production needs (such as different temperature tolerance values and different workpiece models), avoiding the tedious process of manually selecting and classifying one by one during subsequent processing. For example, workpieces with a temperature tolerance within 10°C are placed in the "second cooling" box, and workpieces with a temperature tolerance above 10°C are placed in the "reinspection" box. Subsequently, different processing measures (second cooling or manual inspection of welding quality) can be taken, the processing time of single batch of unqualified workpieces is shortened, and the flow efficiency of the production line is improved. In addition, the universal wheel with a brake allows the material receiving table 44 to be flexibly moved according to the position of the conveying belt and the production area adjustment needs of the workshop, improving the adaptability compared with the fixed tooling table. The protective fence on the outside of the frame solves the problem of workpiece falling in the traditional storage method, especially when the material receiving table 44 is full and needs to be transported, ensuring the safety of the workpieces and reducing the clutter and cleaning cost of the workshop floor caused by workpiece falling.

[0060] In an embodiment, the detection module 40 further comprises an alarm 45, which is communicatively connected to the temperature measuring instrument 42. When the temperature measuring instrument 42 scans and measures the temperature of the workpiece, and the temperature detected is higher than the set threshold, the temperature measuring instrument 42 synchronously transmits a signal to the alarm 45, and the alarm 45 is started to issue an alarm.

[0061] Specifically, referring to FIG. 4, Figure 1 As shown, the alarm 45 adopts an audible and visual integrated alarm device, the shell is made of flame-retardant ABS material (with impact resistance and high and low temperature resistance characteristics, suitable for complex workshop environment), and the inside is integrated with a red LED warning light (luminous intensity ≥8000 mcd, light diffusion angle 120°) and a piezoelectric buzzer (volume adjustable, range 60-100 dB). The back of the alarm 45 is provided with a buckle type mounting seat, which can be directly clamped on the side of the horizontal section of the detection module 40 mounting bracket 41 (located between the temperature measuring instrument 42 and the material pushing cylinder 43, the height is flush with the line of sight of the operator, ensuring that the warning signal can be quickly captured), and is equipped with a shielding signal line, which is communicatively connected to the signal output module of the temperature measuring instrument 42 through the terminal interface, avoiding the interruption of signal transmission caused by electromagnetic interference in the workshop.

[0062] The preset temperature safety threshold (e.g., ≤55℃) of the temperature detector 42 is written into the internal control system. When the temperature of the workpiece is greater than 55℃, the signal output module of the temperature detector 42 sends a high-level trigger signal to the pushing cylinder 43 and the alarm 45 at the same time. The response delay of the two is less than or equal to 0.1 second, ensuring that the alarm and the diversion action are started synchronously. In addition, the alarm 45 is set to the default mode of “light always on + intermittent buzzing of the buzzer” (the buzzing frequency is 1 time per second, and each time lasts for 0.5 second). This mode can not only avoid the noise pollution caused by continuous buzzing, but also attract the attention of the operator through regular signals. At the same time, the alarm 45 is provided with a manual reset button on the side. When the operator has finished processing the unqualified workpiece, the alarm can be turned off by pressing the button. If the alarm is not manually reset, it will automatically stop after 5 minutes of continuous triggering (to prevent long-term occupation of the acoustic environment in the workshop). The alarm 45 is provided with a built-in current detection unit. If the line is loose or the power supply fails, the alarm 45 will send a fault signal to the temperature detector 42 through the signal line in the reverse direction. The temperature detector 42 will upload the fault information to the PLC system of the workshop, and the PLC system will display the prompt of “alarm 45 fault” on the main control screen of the production line, so that the fault can be checked and repaired in time.

[0063] That is, compared with the traditional mode of relying only on the pushing cylinder 43 for diversion, the audible and visual signals of the alarm 45 can first convey the information of “high-temperature workpiece” to the operator of the production line (especially the person responsible for processing the unqualified workpiece), avoid the overflow problem of the storage box caused by the accumulation of unqualified workpieces, and improve the timeliness of the abnormal processing of the production line. In addition, the alarm 45 and the pushing cylinder 43 form a dual control of “diversion + early warning”. On the one hand, the pushing cylinder 43 physically intercepts the high-temperature workpiece to prevent it from flowing into the subsequent process. On the other hand, the alarm 45 reminds the operator to pay attention to the abnormality through audible and visual signals, avoiding the risk that the operator cannot discover in time when the high-temperature workpiece is not diverted due to the failure of the pushing cylinder 43 (e.g., the electromagnetic valve is stuck). In addition, the red LED warning light has high luminous intensity. Even in a strong light environment in the workshop (e.g., direct sunlight in summer), it can still be clearly identified within a range of 10 meters, avoiding the risk that the warning signal is ignored due to light interference. The adjustable volume of 60-100 dB can be flexibly set according to the background noise in the workshop (e.g., the running noise of the conveyor belt and the air pump is about 70 dB), ensuring that the alarm sound can be effectively identified and does not exceed the noise standard in the workshop (≤85 dB), avoiding auditory interference on the operator. The buckle type installation and the manual reset button design not only facilitate the installation and disassembly and maintenance of the alarm 45, but also enable the operator to quickly terminate the alarm, improving the convenience of use.

[0064] In an embodiment, the cooling blowing detection device further comprises a positioning tool module 50 for positioning the workpiece to complete the welding of the workpiece.

[0065] Specifically, referring to Figure 1 andFigure 4 As shown, the positioning tool module 50 can adopt a modular combined structure, the main body is a cast iron material base (size 50 cm x 30 cm x 10 cm, weight 20 kg, to ensure that the tool is placed stable and does not shake), the surface of the base is connected with three groups of adjustable positioning components through T-shaped groove sliding rails, which correspond to the valve body positioning, copper pipe support positioning and splicing interface positioning of the workpiece respectively: Valve body positioning component: composed of arc-shaped positioning block (the arc is matched with the outer profile of the four-way valve body, and the inner side is pasted with 3mm thick rubber non-slip pad) and height adjusting screw, the arc-shaped positioning block is fixed on the base sliding rail through the screw, the interval can be adjusted horizontally (adjustment range 10-20 cm) according to the size of the valve body, and the screw is tightened after adjustment to lock the position, realizing the horizontal direction limiting of the valve body; Copper pipe support positioning component: V-shaped groove support block (groove angle 60°, suitable for copper pipes of different diameters) is adopted, the support block is connected with the base sliding rail through the sliding block at the bottom, and can be adjusted forward and backward along the extension direction of the copper pipe (adjustment range 0-30 cm), and the top of the support block is provided with an openable pressing piece (locked through a butterfly bolt), the pressing piece is closed after the copper pipe is placed in the V-shaped groove, realizing the vertical direction fixing of the copper pipe; Splicing interface positioning component: precision adjustable positioning pin and guide sleeve structure, the positioning pin is installed on the base near the copper pipe splicing position, and the guide sleeve is sleeved on the positioning pin, the end face of the guide sleeve is flush with the designed position of the copper pipe splicing interface, when the copper pipe is placed on the support block, the splicing end is pushed to abut against the end face of the guide sleeve, which can ensure the coaxiality of the interface (error ≤0.1 mm), and the guide sleeve is removed for welding after positioning is completed.

[0066] In addition, tool hangers are arranged at the edges of the base, which can place auxiliary tools such as filler for welding and cleaning brush, improving the operation convenience.

[0067] The operator places the four-way valve body between the arc-shaped positioning blocks, adjusts the interval of the positioning blocks and locks them; then places the copper pipe to be welded into the V-shaped groove support block, adjusts the position of the support block to make one end of the copper pipe align with the valve body interface, and the other end abuts against the guide sleeve of the splicing interface positioning component, and closes the pressing piece to lock the copper pipe; after confirming that there is no deviation at the copper pipe splicing interface and the coaxiality meets the requirements through naked eye observation or with the help of ruler auxiliary measurement, the guide sleeve is removed; the operator holds the high temperature flame gun and starts heating from one side of the splicing interface, fills the filler when the temperature reaches the melting temperature of the filler (about 800-900℃), and continues until the filler uniformly fills the interface gap and solidifies; during the welding process, the positioning tool keeps the workpiece completely fixed to avoid the deviation of the interface welding caused by the shaking of the workpiece; after the welding is completed, the adjusting screw of the arc-shaped positioning block and the pressing piece of the V-shaped groove are loosened, and then the welded workpiece can be taken off from the tool and transferred to the subsequent cooling process.

[0068] That is, when the workpiece is manually held for welding, the copper pipe splicing is prone to coaxiality deviation, resulting in problems such as gaps and virtual welding at the welded interface. The positioning tool module 50 controls the coaxiality error of the copper pipe splicing to be within 0.1 mm through the cooperative limiting of multiple positioning assemblies, improves the sealing performance qualification rate of the welded interface, reduces the rework rate, and greatly reduces the material waste and working time loss caused by welding quality problems. In addition, when the workpiece is manually held for welding, the position of the workpiece and the operation of the flame gun need to be maintained at the same time, which is labor-intensive. The positioning tool module 50 realizes stable fixation of the workpiece, and the operator does not need to hold the workpiece, but can focus on the precise control of the angle of the flame gun and the filler metal filling, the time consumption of single workpiece welding is shortened, and the welding efficiency is improved; at the same time, the modular adjustment design makes the tool adapt to the positioning needs of different specifications of workpieces, and the tool adjustment time is shortened when the workpiece type is replaced, further improving the overall process efficiency.

[0069] In an embodiment, the positioning tool module 50 includes a base disc 51, a support frame 52, and a support rod 53, the support frame 52 is rotationally connected to the base disc 51, and the support rod 53 is connected to the support frame 52, and the support rod 53 is used for workpiece positioning.

[0070] Specifically, referring to Figure 1 and Figure 4As shown, the base disc 51 is made of steel forging, and the bottom is uniformly distributed with four universal wheels with brakes, which can facilitate the movement of the tooling module in the workshop and lock the position through the brake. A circular groove is formed in the center of the upper surface of the disc, and a deep groove ball bearing is embedded in the groove. The inner ring of the bearing is in interference fit with the rotating shaft at the bottom of the support frame 52, so as to realize the flexible rotation of the support frame 52. At the same time, a positioning hole is formed at every 30° along the circumferential direction of the edge of the disc, which can be fixed with the locking pin on the support frame 52 to fix the support frame 52 at a specific rotating angle, so as to meet the needs of different welding orientations. The support frame 52 is an aluminum alloy profile welded frame, and the rotating shaft is welded at the bottom (adapted to the inner ring of the bearing of the base disc 51). The top of the rotating shaft is provided with a limiting flange to prevent the support frame 52 from falling off the base disc 51. The height of the two side columns of the support frame 52 can be adjusted. The spring type locking pin (adapted to the positioning hole of the base disc 51) is installed near the bottom of the support frame 52. The rotating restriction of the support frame 52 can be unlocked by pressing the pin rod, and the pin rod is inserted into the positioning hole under the action of the spring after being rotated to the position, so as to realize the angle fixation of the support frame 52. The support rod 53 is made of stainless steel round rod (the length can be customized according to the size of the workpiece), and 3-4 support rods 53 are arranged. The bottom of each support rod 53 is connected with the T-shaped sliding groove of the crossbeam of the support frame 52 through a sliding block, and the sliding block is provided with a locking knob to adjust the horizontal spacing (adjustment range 5-30 cm) of the support rod 53 on the crossbeam. The top of the support rod 53 is welded with an arc-shaped positioning claw (the arc is adapted to the outer profile of the workpiece valve body, and a 2mm thick silica gel pad is pasted on the inner side to prevent scratching the surface of the workpiece), which can rotate 360° around the axis of the support rod 53 and lock the angle through a top pin. In addition, the middle of the support rod 53 is provided with an expansion joint (adjustment range ±5 cm) to finely adjust the height of the positioning claw, so as to ensure that the positioning claw can accurately fit the positioning needs of different parts of the workpiece.

[0071] That is, the traditional fixed positioning tooling needs the operator to move around the workpiece to complete the multi-directional welding, which is complicated and easy to cause fatigue. The rotating cooperation of the base disc 51 and the support frame 52 can make the workpiece rotate 360° with the support frame 52, and be fixed at any angle through the positioning hole. The operator does not need to move the position to operate the workpiece, the operation moving distance in the single workpiece welding process is reduced, and the welding efficiency is improved. In addition, the height adjustment of the support frame 52 and the horizontal spacing adjustment and expansion adjustment of the support rod 53 make the positioning tooling module 50 adapt to different sizes of four-way valve workpieces, so that it is not necessary to customize tooling for each specification, the tooling adaptation range is expanded, and the tooling procurement cost and workshop storage space occupation are reduced.

[0072] The above embodiment is a preferred implementation scheme of the present application. In addition to this, the present application can be implemented in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the present application.

Claims

1. A cooling air blowing detection device, characterized in that, include: The system includes a cooling module, a conveying module, an air blowing module, and a detection module. The cooling module is used to cool the workpiece. The cooled workpiece is conveyed to the air blowing module via the conveying module. The air blowing module is used to blow air onto the cooled workpiece. The air-blown workpiece is then conveyed to the detection module via the conveying module. The detection module is used to detect the temperature of the air-blown workpiece.

2. The cooling air blowing detection device according to claim 1, characterized in that, The cooling module includes a cooling pool, a photoelectric sensor, and a liquid delivery assembly. The photoelectric sensor is communicatively connected to the liquid delivery assembly. The cooling pool is used to cool the workpiece, and the photoelectric sensor is used to detect the volume scale line of the coolant in the cooling pool. When the volume scale line of the coolant in the cooling pool is lower than a set value, the photoelectric sensor transmits a liquid replenishment signal to the liquid delivery assembly, and the liquid delivery assembly starts to deliver liquid to the cooling pool until the volume scale line of the coolant in the cooling pool reaches the set value.

3. The cooling air blowing detection device according to claim 2, characterized in that, The liquid delivery assembly includes a liquid delivery pipe and a control switch. One end of the liquid delivery pipe is connected to an external liquid storage mechanism, and the other end corresponds to the cooling pool. The control switch is used to communicate with the external liquid storage mechanism and the photoelectric sensor.

4. The cooling air blowing detection device according to claim 1, characterized in that, The air blowing module includes a fixed frame and an air blowing component. The fixed frame corresponds to the conveying module, and the air blowing component is connected to the fixed frame. At least one end of the air blowing component is provided with an air inlet, which is connected to an external inflation mechanism. The air blowing component is provided with a plurality of air outlets on the side facing the conveying module.

5. The cooling air blowing detection device according to claim 4, characterized in that, The air blowing component has air inlets at both ends and 4-12 air outlets evenly distributed along its length.

6. The cooling air blowing detection device according to claim 1, characterized in that, The detection module includes a mounting frame, a temperature measuring instrument, and a pusher cylinder. The mounting frame corresponds to the conveying module, and the temperature measuring instrument and the pusher cylinder are mounted on the mounting frame. When the workpiece after air blowing is conveyed to the temperature measuring instrument via the conveying module, the temperature measuring instrument scans and measures the temperature of the workpiece. If the temperature is lower than the set threshold, the workpiece passes normally. If the temperature is higher than the set threshold, the temperature measuring instrument simultaneously transmits a signal to the pusher cylinder, and the pusher cylinder is activated to push the workpiece away from the conveying module.

7. The cooling air blowing detection device according to claim 6, characterized in that, The detection module also includes a receiving platform, which is located on the opposite side of the pusher cylinder. When the pusher cylinder is activated, it pushes the workpiece away from the conveying module and onto the receiving platform.

8. The cooling air blowing detection device according to claim 6, characterized in that, The detection module also includes an alarm, which is used to communicate with the temperature measuring instrument. When the temperature measuring instrument scans and measures the temperature of the workpiece and the detected temperature is higher than a set threshold, the temperature measuring instrument synchronously transmits a signal to the alarm, and the alarm is activated to issue an alarm.

9. The cooling air blowing detection device according to claim 1, characterized in that, The cooling air blowing detection device also includes a positioning fixture module, which is used for positioning the workpiece so that the workpiece can be welded.

10. The cooling air blowing detection device according to claim 9, characterized in that, The positioning fixture module includes a base disc, a support frame, and a support rod. The support frame is rotatably connected to the base disc, and the support rod is connected to the support frame. The support rod is used for workpiece positioning.

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