Multi-station water detection equipment for inner container of water heater

Abstract

The utility model provides a water heater inner container multi-station water detection device which comprises a multi-station rotary table rack, a multi-station water test detection mechanism and a follow-up lifting water tank mechanism, and the multi-station water test detection mechanism comprises a centering clamping mechanism, a rotary driving mechanism, a follow-up limiting mechanism, an inner container inflation mechanism and an inner container inflation head assembly. The multi-station rotary table rack is an equipment carrying body and rotates by 360 degrees to conduct station conversion. After the centering clamping mechanism moves towards the center to clamp the inner container workpiece, the rotary driving mechanism and the follow-up limiting mechanism act at the same time to rotate the inner container workpiece to a specified posture, and after the operation is completed, the inner container inflation head assembly moves and extends out of the inner container inflation head assembly, and inflation water detection is prepared; and the accompanying lifting water tank mechanism can test water. The device is suitable for water test detection of the sealing performance of the water heater liners of various sizes, and multi-station automatic water test detection is realized, so that the detection efficiency is greatly improved, the labor cost is reduced, and automatic production of a water heater liner assembly line is realized.

Description

Technical Field

[0001] The utility model relates to the field of water heater inner tank assembly, in particular to a multi-station water inspection device for the inner tank of a water heater. Background Art

[0002] Thanks to the increasing improvement in people's lives in my country, my country's water heater industry is ushering in a period of comprehensive growth in market demand; with the increasing demand for water heaters in the future, the water heater industry will develop rapidly. As an important water storage device in the water heater, the inner tank of the water heater must ensure the hard requirements of heat preservation, pressure resistance, rust resistance, and watertightness. Therefore, the inner tank is often made of stainless steel. However, the welding of stainless steel inner tanks is difficult, and the welding quality of different manufacturers varies. It is often easy to have cold welding and leaking welding, and the sealing cannot be guaranteed, causing great safety hazards. Therefore, manufacturers often conduct water testing after the welding of the inner tank of the water heater is completed to ensure the sealing and safety of the inner tank of the water heater.

[0003] In the prior art, the water test method is generally used to detect the sealing of the water heater tank. The water inlet and outlet of the water heater tank are respectively inflated and sealed, and the sealing of the water heater tank is judged by observing whether bubbles are generated. The current manual inspection is complicated and difficult, especially in the leak detection work, and the operation is cumbersome and inconvenient, and the efficiency is low.

[0004] Therefore, there is an urgent need for a device with a high degree of automation and high detection efficiency to alleviate manual labor and improve production efficiency. Utility Model Content

[0005] In view of the existing technology and room for improvement, the utility model provides a multi-station water inspection equipment for the inner tank of a water heater, and studies and designs its main multi-station turntable mechanism and multi-station water testing and leak detection mechanism and their matching components to solve the problems of low production efficiency, large manpower labor, unstable detection quality, etc. of the traditional water heater inner tank production line.

[0006] To achieve the above-mentioned purpose, according to the utility model, a multi-station water inspection device for the inner tank of a water heater is provided, which includes a multi-station turntable frame, a multi-station water testing and detection mechanism and an accompanying lifting water tank mechanism.

[0007] The multi-station turntable frame is equipped with a multi-station water testing and detection mechanism and an accompanying lifting water tank mechanism. Its top can rotate 360 ​​degrees for multi-station conversion.

[0008] There are four groups of multi-station water testing and detection mechanisms, which are arranged at 90 degrees around the multi-station turntable frame. They specifically include: centering clamping mechanism, rotation drive mechanism, follow-up limit mechanism, liner inflation mechanism, and liner inflation head assembly.

[0009] The centering clamping mechanism is used to connect the multi-station water testing and detection mechanism with the multi-station turntable frame. It has a gantry structure, including a synchronous centering mechanism and square tube arms on both sides. The synchronous centering mechanism is connected to the multi-station turntable frame; the two square tube arms are respectively fixed at different output ends of the synchronous centering mechanism.

[0010] The square tube arms on both sides are driven by the synchronous centering mechanism to move synchronously toward the center to clamp the liner workpiece; the inner wall of one of the square tube arms is connected to the rotary drive mechanism, and the inner wall of the other square tube arm is connected to the follow-up limiting mechanism.

[0011] The liner inflation mechanism is assembled on the follow-up limiting mechanism. After the liner workpiece is clamped by the centering clamping mechanism, the rotary drive mechanism and the follow-up limiting mechanism rotate simultaneously to rotate the liner counterclockwise 90 degrees and limit the positioning.

[0012] The output end of the liner inflation mechanism is connected to the liner inflation head assembly. After the workpiece to be tested is in place, the liner inflation head assembly is extended to align with the two water outlets of the workpiece to prepare for inflation testing.

[0013] The accompanying lifting water tank mechanism is located on one side of the multi-station turntable frame. When the multi-station turntable frame transfers the inner tank workpiece to the accompanying lifting water tank mechanism, the water tank is filled with water and the water test is started.

[0014] The multi-station turntable frame includes: a frame, a multi-station turntable and a water tank lifting power mechanism.

[0015] The frame is welded from multi-profile square tube plates.

[0016] The multi-station turntable comprises a turntable body, a transmission gear set and a servo motor. The servo motor drives the driving gear of the transmission gear set, and the driven gear of the transmission gear set is rotatably installed on the frame; the turntable body can rotate with the driven gear.

[0017] The water tank lifting power mechanism is used to drive the lifting of the water tank lifting mechanism and is built in the frame.

[0018] The synchronous centering mechanism comprises a centering frame which is connected to the multi-station turntable via a connecting plate.

[0019] The power mechanism is a cylinder, which is fixed to the centering frame of the synchronous centering mechanism, and its output end forms the first output end of the synchronous centering mechanism and is connected to the square tube arm on the rotating drive mechanism side.

[0020] The slide rails are fixed to the centering frame for the two square tube arms to move.

[0021] The synchronous gear is rotatably mounted on the connecting piece, and the connecting piece is mounted on the connecting plate.

[0022] A pair of racks are located on both sides of the synchronous gear and mesh with the outside of the synchronous gear. The pair of racks are fixed to different square tube arms; the racks connected to the follow-up limiting mechanism form the second output end of the synchronous centering mechanism.

[0023] After the square tube arm connected to the rotating drive mechanism is subjected to force by the power mechanism, the two racks move toward or in the opposite direction through the central synchronous wheel, thereby driving the square tube arms on both sides installed on the slide rail to move, thereby clamping and releasing the inner liner.

[0024] The rotary drive mechanism comprises: a power transmission mechanism, an induction device and an inner tank clamp.

[0025] The power transmission mechanism is installed in one of the two side square tube arms, and uses the motor as the power source to perform belt transmission to rotate the inner liner clamping claw 1 to change the posture of the inner liner workpiece, which specifically includes:

[0026] Motor one.

[0027] The belt transmission unit has a driving pulley connected to the output end of the motor 1, and a driven pulley connected to one end of the driving transmission shaft assembly; the other end of the driving transmission shaft assembly is fixed to the inner tank clamp 1.

[0028] The driving shaft of the active transmission shaft assembly is the axle of the driven pulley, which is rotatably mounted on the corresponding square tube arm.

[0029] The sensing device comprises a sensor and a sensing sheet.

[0030] The sensors are distributed on the sleeve of the active transmission shaft assembly along the circumference. The sleeve is sleeved on the active shaft and fixed on the corresponding square tube arm.

[0031] The induction sheet is fixed on the circular ring, and the circular ring is sleeved on the driving shaft.

[0032] The follow-up limiting mechanism comprises: a follow-up mechanism and two inner tank clamping claws.

[0033] The follower mechanism is installed in the square tube arm on the other side. When the inner tank workpiece rotates, it is rotated by the rotational power of the rotary drive mechanism.

[0034] The follower mechanism comprises a cylinder guide assembly, a follower transmission shaft assembly and a horizontal positioning plate.

[0035] The cylinder guide assembly comprises: a cylinder and a roller; the cylinder is fixed to the corresponding square tube arm; and the roller is rotatably installed on the output end of the cylinder.

[0036] One end of the follow-up transmission shaft assembly is fixed to the second inner tank clamping claw, and the other end is installed with a horizontal positioning plate; a track matching the roller is opened on the horizontal positioning plate.

[0037] The inner liner inflation mechanism comprises an inner liner inflation frame, a servo screw transmission mechanism and an inflation component.

[0038] The inner liner inflation frame is installed on the inner liner clamping claw 2 of the follow-up limiting mechanism.

[0039] The servo screw transmission mechanism includes: a servo motor 2, which is installed on the inner liner inflation frame, and its output end is connected to the screw transmission mechanism, and the output end of the screw transmission mechanism is connected to the inflation component.

[0040] The inner liner inflation head assembly comprises an inflation head, a silicone pad and a plug pressing sheet in sequence.

[0041] The inflation head is connected to the output end of the inflation component to perform extension and retraction actions and also serves as an air source connection piece.

[0042] The silicone pad is embedded in the inflation head to buffer the inner liner workpiece pipe interface, and the plug pressing piece is installed at the bottom of the inflation head to guide the inner liner workpiece pipe interface.

[0043] There are two groups of liner inflation head components, one group is connected to the water inlet of the liner workpiece, and the other group is connected to the water outlet of the liner workpiece.

[0044] When the water test begins, one liner inflation head assembly admits air to the water inlet, and the other liner inflation head assembly seals the liner workpiece, and the water outlet is closed to form a sealed cavity.

[0045] After the inspection is completed, the inner liner inflation head assembly opens the water outlet to release the pressure, and the inner liner inflation head assembly is retracted to wait for the next inner liner workpiece to be inspected.

[0046] The accompanying lifting water tank mechanism comprises a water tank and a lifting slide rail mechanism.

[0047] The lifting slide rail mechanism is connected to the water tank lifting power mechanism. After the multi-station turntable frame station is converted, the workpiece to be tested is transferred here, the water tank is raised, and the water test is started.

[0048] Compared with the prior art, the utility model has the following advantages:

[0049] The above-mentioned multi-station turntable frame is the main body of the equipment structure, carrying the remaining mechanism components, and its top can rotate 360 ​​degrees for multi-station conversion; there are four groups of multi-station water testing and detection mechanisms, which are arranged 90 degrees around the multi-station turntable frame. The centering clamping mechanism is the interconnecting part between the multi-station water testing and detection mechanism and the multi-station turntable frame. The centering clamping mechanism is a gantry structure, consisting of a synchronous centering mechanism and movable square tube arms on both sides. The square tube arms on both sides are driven by the synchronous centering mechanism and move synchronously to the center to clamp the liner workpiece; the square tube arms on both sides are respectively mounted The rotating drive mechanism and the follow-up limiting mechanism are carried out, and the inner liner inflation mechanism is assembled on the follow-up limiting mechanism. After the inner liner workpiece is clamped by the centering clamping mechanism, the rotating drive mechanism and the follow-up limiting mechanism act at the same time to clamp and rotate the inner liner 90 degrees and limit the positioning; after the inner liner inflation mechanism to be tested workpiece is in place, the inner liner inflation head assembly is extended to align the two water inlets of the workpiece to prepare for inflation testing; the accompanying lifting water tank mechanism is distributed on one side of the multi-station turntable frame, and the multi-station turntable frame position is converted to transfer the workpiece to this place, and the water tank is raised to start the water test and inflation test.

[0050] The multi-station water inspection equipment for water heater tanks is suitable for water testing of water heater tanks of various sizes. It replaces the original manual single-station water testing with a multi-station automated system, and uses servo module transfer and inflation testing methods to work, which speeds up the testing cycle, improves product production quality and efficiency, and realizes the automated production of water heater tank water inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is an overall structural diagram of a multi-station water inspection device for the inner tank of a water heater in the utility model.

[0052] Figure 2 It is a structural diagram of a multi-station turntable frame in the utility model.

[0053] Figure 3 It is a structural diagram of a multi-station water testing mechanism in the utility model.

[0054] Figure 4 It is a schematic diagram of the multi-station water testing and detecting mechanism for converting the posture of the inner tank workpiece in the utility model.

[0055] Figure 5 It is a structural diagram of the centering clamping mechanism in the utility model.

[0056] Figure 6 It is a structural diagram of the rotary drive mechanism in the utility model.

[0057] Figure 7 It is a structural diagram of the follow-up limiting mechanism in the utility model.

[0058] Figure 8It is a structural diagram of a cylinder guide assembly and a follower transmission shaft assembly in the follower mechanism of the utility model.

[0059] Fig. 9 It is a structural diagram of the inner liner inflation mechanism in the utility model.

[0060] Fig.10 It is a bottom view of the inner liner inflation mechanism structure of the utility model.

[0061] Fig.11 This is a diagram of the inner liner inflation head assembly and the inner liner inflation posture in the utility model.

[0062] Fig.12 It is a structural diagram of the inner liner inflation head assembly in the utility model.

[0063] Fig.13 It is the structural diagram of the portable lifting water tank mechanism.

[0064] Fig.14 It is a stereoscopic diagram of the rotary drive mechanism in the utility model.

[0065] Fig.15 It is a three-dimensional diagram of the follow-up limiting mechanism in the utility model.

[0066] Fig.16 It is a schematic diagram of the installation position of the rack in the synchronous centering mechanism of the utility model.

[0067] In the figure: 100-multi-station turntable frame, 200-multi-station water testing mechanism, 300-accompanying lifting water tank mechanism, 110-frame, 120-multi-station turntable, 130-water tank lifting power mechanism, 210-centering clamping mechanism, 211-synchronous centering mechanism, 212-side square tube arms, 220-rotation drive mechanism, 221-power transmission mechanism, 222-sensing device, 223-inner tank clamping claw , 230-follow-up limiting mechanism, 231-follow-up mechanism, 232-inner liner clamping claw 2, 234-roller, 235-horizontal positioning plate, 240-inner liner inflation mechanism, 241-inner liner inflation rack, 242-servo screw transmission mechanism, 243-inflating assembly, 250-inner liner inflation head assembly, 251-inflating head, 252-silicone pad, 253-plugging sheet, 310-water tank, 320-lifting slide rail mechanism. DETAILED DESCRIPTION

[0068] The technical solution of the utility model is described in detail below with reference to the accompanying drawings:

[0069] The following is combined with Figure 1-16 Further details on the application:

[0070] See also Figure 1The utility model discloses a multi-station water inspection device for a water heater inner tank, comprising a multi-station turntable frame 100, a multi-station water testing and detection mechanism 200, and an accompanying lifting water tank mechanism 300.

[0071] The multi-station turntable frame 100 is the main body of the equipment structure, carrying a multi-station water testing and detection mechanism 200 and an accompanying lifting water tank mechanism 300.

[0072] There are four groups of multi-station water testing and detection mechanisms 200, which are connected and distributed around the multi-station turntable frame 100 at 90 degrees.

[0073] The accompanying lifting water tank mechanism 300 is distributed on one side of the multi-station turntable frame 100. When the multi-station turntable frame 100 is switched, the workpiece to be tested is transferred here, the water tank is raised, and the water test is started.

[0074] like Figure 2 As shown, the multi-station turntable frame 100 is composed of a frame 110, a multi-station turntable 120 and a water tank lifting power mechanism 130, which improves the detection efficiency.

[0075] The frame 110 is welded from square tube plates with multiple profiles and is stable and reliable.

[0076] The multi-station turntable 120 is composed of pneumatic slip rings and servo reducers. It adopts gear transmission. The servo reducer drives the slewing bearing to rotate, which can quickly and accurately switch the station and ensure the station position.

[0077] Specifically, the multi-station turntable 120 includes a turntable body, a transmission gear set and a servo motor 1. The servo motor 1 drives the driving gear of the transmission gear set, and the driven gear of the transmission gear set is rotatably installed on the frame 110; the turntable body can rotate with the driven gear.

[0078] The water tank lifting power mechanism 130 is a lifting power mechanism of the accompanying water tank lifting mechanism 300, which is fixed to the frame 110, adopts a guide rail and sprocket design, uses a horizontal reducer as a power source, and is provided with a counterweight block to ensure the stability of the water tank lifting.

[0079] like Figure 3 As shown, the multi-station water testing and detection mechanism 200 is composed of a centering clamping mechanism 210, a rotation driving mechanism 220, a follow-up limiting mechanism 230, an inner liner inflation mechanism 240, and an inner liner inflation head assembly 250.

[0080] The multi-station water testing and detection mechanism 200 is based on a central clamping mechanism 210 and is a gantry-type structure that carries various mechanisms.

[0081] The rotary drive mechanism 220 and the follow-up limiting mechanism 230 are respectively installed on both sides of the centering clamping mechanism 210 and are installed opposite to each other.

[0082] The liner inflation mechanism 240 is installed on the same side as the follow-up limiting mechanism 230 and is connected to the clamping claw plate on the follow-up limiting mechanism 230 .

[0083] When the liner workpiece is in place, the middle clamping mechanism 210 moves toward the center, driving the rotary drive mechanism 220 and the follower limit mechanism 230 to move toward the middle. After the clamping jaws of the two mechanisms clamp the liner workpiece, they rotate 90 degrees.

[0084] like Figure 4 As shown, the liner workpiece is rotated from a horizontal posture to a vertical posture, and the liner inflation mechanism 240 mounted on the follower limiting mechanism 230 rotates 90 degrees accordingly, and the screw rod of the liner inflation mechanism 240 synchronously moves the liner inflation head assembly 250 to the water inlet of the liner workpiece, and the inflation test starts after the multi-station turntable 120 rotates to the station to be inspected.

[0085] like Figure 5 As shown, the main body of the centering clamping mechanism 210 is a gantry structure, including a synchronous centering mechanism 211 and two side square tube arms 212. The two square tube arms 212 are respectively fixed to different output ends of the synchronous centering mechanism 211;

[0086] The synchronous centering mechanism 211 is connected to the multi-station turntable frame 100 .

[0087] The synchronous centering mechanism 211 comprises:

[0088] The centering frame is connected to the multi-station turntable 120 via a connecting plate;

[0089] The power mechanism is a cylinder, which is fixed to the centering frame of the synchronous centering mechanism 211, and its output end forms the first output end of the synchronous centering mechanism 211 and is connected to the square tube arm 212 on the side of the rotation drive mechanism 220;

[0090] A slide rail, fixed to the centering frame, for the two square tube arms 212 to move;

[0091] A synchronous gear is rotatably mounted on the connecting piece, and the connecting piece is mounted on the connecting plate;

[0092] and a pair of racks, located on both sides of the synchronous gear, both meshing with the outside of the synchronous gear, the pair of racks being fixed to different square tube arms 212; connected to the rack of the follower limiting mechanism 230, forming the second output end of the synchronous centering mechanism 211;

[0093] After the square tube arm connected to the rotary drive mechanism 220 is subjected to force by the power mechanism, the two racks move toward or in the opposite direction via the central synchronous wheel, thereby driving the square tube arms 212 on both sides installed on the slide rail to move, thereby clamping and releasing the inner liner.

[0094] The square tube arms 212 on both sides are carriers of the rotary drive mechanism 220 and the follow-up limiting mechanism 230. Some connecting parts are thickened to ensure the connection strength, and the whole is waterproof and rust-proof.

[0095] like Figure 6 As shown, the rotary drive mechanism 220 is composed of a power transmission mechanism 221, a sensing device 222, and an inner container clamp 223.

[0096] The power transmission mechanism 221 is installed inside one side of the two side square tube arms 212, and uses a motor as a power source to perform synchronous belt drive to rotate the inner liner clamp 223 to change the posture of the inner liner workpiece.

[0097] The inner liner clamping jaw 223 is designed in the form of a non-metallic and metal nesting, which increases the gripping force of the clamping jaw and the inner liner workpiece while ensuring the hardness of the clamping jaw, and also reduces the damage of the clamping jaw to the inner liner workpiece.

[0098] The induction device 222 is composed of an induction sensor and an induction sheet, and a plurality of sensors are installed to ensure that the inner tank workpiece is rotated into position.

[0099] Specifically, the rotation driving mechanism 220 includes: a power transmission mechanism 221, a sensing device 222, and an inner container clamping claw 223;

[0100] The power transmission mechanism 221 is installed in one of the two side square tube arms 212, and uses the motor as the power source to perform belt transmission to rotate the inner liner clamp 223 to change the posture of the inner liner workpiece, which specifically includes:

[0101] Motor 1;

[0102] The belt transmission unit has a driving pulley connected to the output end of the motor 1, and a driven pulley connected to one end of the driving transmission shaft assembly; the other end (driving shaft) of the driving transmission shaft assembly is fixed to the inner tank clamp 1 223;

[0103] The driving shaft of the driving transmission shaft assembly is the axle of the driven pulley, which is rotatably mounted on the corresponding square tube arm 212;

[0104] The sensing device 222 includes a sensor and a sensing sheet;

[0105] The sensors are distributed along the circumference of the sleeve of the active transmission shaft assembly. The sleeve is sleeved on the active shaft and fixed to the corresponding square tube arm 212; wherein the active shaft extends out of the sleeve.

[0106] The induction sheet is fixed on the circular ring, and the circular ring is sleeved on the driving shaft.

[0107] That is, the sensor does not move, and the sensing plate rotates with the active shaft to sense sensors at different positions.

[0108] like Figure 7 , Figure 8 As shown, the follow-up limiting mechanism 230 is composed of a follow-up mechanism 231 and an inner container clamping claw 232.

[0109] The follower mechanism 231 is installed in the other side of the two side square tube arms 212, and the rotary drive mechanism 220 and the follower limit mechanism 230 are installed relatively to each other, so as to align and move towards each other to clamp the inner liner workpiece or move away from each other to put down the inner liner workpiece. At the same time, when the inner liner workpiece rotates, it rotates with the rotary drive mechanism 220's rotary power, saving the power mechanism.

[0110] like Figure 8 As shown, the follower mechanism 231 includes a cylinder guide assembly, a follower transmission shaft assembly, and a horizontal positioning plate 235;

[0111] The cylinder guide assembly includes: a cylinder and a roller 234; the cylinder is fixed to the corresponding square tube arm 212; the roller 234 is rotatably mounted on the output end of the cylinder;

[0112] One end of the follower transmission shaft assembly is fixed to the second inner container clamping jaw 232, and the other end is installed with a horizontal positioning plate 235; the horizontal positioning plate 235 is provided with a track matching the roller 234.

[0113] When the roller 234 of the cylinder guide assembly is embedded in the track of the horizontal positioning plate 235 of the follower transmission shaft, the follower limiting mechanism 230 is subjected to the force of the rotary drive mechanism 220 to perform a follow-up motion and rotate, which limits the rotation track, increases stability, and does not deviate. The track groove is designed to be a 1 / 4 circle, which serves as a dead limit for the inner liner workpiece to rotate 90 degrees, thereby improving the accuracy of the inner liner workpiece's rotation posture.

[0114] When the cylinder-guided roller 234 separates from the track of the horizontal positioning plate 235 of the follower transmission shaft, it can rotate 360 ​​degrees, which is convenient for later maintenance and protection of the mechanism.

[0115] like Fig. 9 , Fig.10 As shown, the inner liner inflation mechanism 240 is assembled on the follower limiting mechanism 230. After the inner liner workpiece is clamped by the centering clamping mechanism 210, the rotary drive mechanism 220 and the follower limiting mechanism 230 simultaneously rotate to rotate the inner liner counterclockwise by 90 degrees and perform limited positioning;

[0116] The inner liner inflation mechanism 240 has its output end connected to the inner liner inflation head assembly 250. After the workpiece to be inspected is in place, the inner liner inflation head assembly 250 is extended to align with two water inlets of the workpiece to prepare for inflation inspection.

[0117] The inner liner inflation mechanism 240 is composed of an inner liner inflation frame 241 , a servo screw transmission mechanism 242 and an inflation component 243 .

[0118] The inner liner inflation frame 241 is installed on the inner liner clamping claw 232 of the follow-up limiting mechanism 230, and its frame structure is provided with a plurality of weight-reducing holes to reduce the weight of the mechanism itself.

[0119] The servo screw transmission mechanism 242 includes: a servo motor 2, which is installed on the inner liner inflation frame 241, and its output end is connected to the screw transmission mechanism, and the output end of the screw transmission mechanism is connected to the inflation component 243.

[0120] The servo screw drive mechanism 242 is driven by a servo motor to provide a power source for the screw drive, and is positioned by multiple sensors on its side, so as to accurately control the relative position of the mobile inflatable component 243. After the position is determined, the cylinder extends out to prepare for inflation detection.

[0121] like Fig.11 , Fig.12 As shown, the inner liner inflation head assembly 250 is composed of an inflation head 251, a silicone pad 252 and a plug pressing piece 253 in sequence.

[0122] The inflation head 251 is controlled by the inflation component 243 to perform extension and retraction actions, and at the same time serves as an air source connection piece. The silicone pad 252 is embedded in the inflation head 251 to buffer the inner liner workpiece pipe interface. The plug pressing piece 253 is installed at the bottom of the inflation head 251 to guide the inner liner workpiece pipe interface.

[0123] like Fig.11 As shown, there are two groups of liner inflation head assemblies 250, one group is connected to the water inlet of the liner workpiece, and the other group is connected to the water outlet of the liner workpiece.

[0124] When the water test begins, the inner liner inflation head assembly 250 inflates the water inlet, and another assembly seals the inner liner workpiece, and the water outlet is closed to form a sealed cavity. After the test is completed, the inner liner inflation head assembly opens the water outlet to release pressure, and the inner liner inflation head assembly 250 is retracted to wait for the next inner liner workpiece to be tested.

[0125] like Fig.13 As shown, the accompanying lifting water tank mechanism 300 is composed of a water tank 310 and a lifting slide rail mechanism 320, which are distributed on one side of the multi-station turntable frame.

[0126] The lifting slide rail mechanism 320 is connected to the water tank lifting power mechanism 130. After the multi-station turntable rack 100 is switched, the workpiece to be tested is transferred here, the water tank is raised, and the water test is started.

[0127] The specific use process of the multi-station water inspection device for the water heater tank of the utility model is described in detail below.

[0128] The hot water tank workpiece is transported to the clamping station in a horizontal posture along the assembly line, and starts working after the equipment receives the signal that the hot water tank workpiece is in place.

[0129] First, the multi-station water testing and detection mechanism 200 starts to work, and the cylinder of its centering clamping mechanism 210 pushes one side of the square tube arm to move in the center, and the other side of the square tube arm is synchronously driven by the rack and the center synchronous wheel to move in the center.

[0130] When the claws of the rotating drive mechanism 220 and the follower limiting mechanism 230 loaded on the two side square tube arms 212 clamp the inner liner, the motor of the power transmission mechanism 221 is activated to rotate the inner liner workpiece counterclockwise 90 degrees, converting the inner liner from a horizontal posture to a vertical posture, and the follower limiting mechanism 230 rotates with the inner liner and performs rotational limitation.

[0131] At the same time, the screw rod of the liner inflation mechanism 240 moves to move the inflation assembly 243 to the specified position to ensure the relative concentric position of the liner inflation head assembly 250 and the liner workpiece. After confirmation, the cylinder pushes the liner inflation head assembly 250 against the two water outlets of the liner workpiece.

[0132] Subsequently, the multi-station turntable 120 starts to move and change the station, converting the multi-station water testing and detection mechanism 200 that clamps the inner liner to the water tank lifting mechanism 300 station, and starts preparing for inflation; there are two groups of inner liner inflation head assemblies 250, one group is connected to the water inlet of the inner liner workpiece, and the other group is connected to the water outlet of the inner liner workpiece. One inner liner inflation head assembly inflates the water inlet, and the other seals the inner liner workpiece, and the water outlet is closed to form a sealed cavity. After 4 seconds of inflation, when the pressure reaches the set value, inflation is stopped to maintain pressure.

[0133] The motor of the water tank lifting power mechanism 130 is started to rotate, and the sprocket drives the water tank 310 to rise. After the inner tank workpiece is completely immersed in water, the rise stops. The inner tank workpiece is left in the water for 3 to 5 seconds to observe whether there are continuous bubbles rising. If no bubbles are generated, it means that the sealing of the inner tank workpiece is qualified.

[0134] After the inspection is completed, the water tank 310 descends. When the inner tank workpiece is separated from the water tank 310, the inner tank inflation head assembly at the water outlet opens the pressure relief valve to relieve pressure and exhaust gas. After the gas is exhausted, the cylinder of the inner tank inflation mechanism 240 retracts the inner tank inflation head assembly 250.

[0135] The multi-station turntable 120 starts to move and switches to the next station. After rotating the inspected liner workpiece clockwise by 90 degrees, the clamp is released and the liner workpiece is put down to flow to the next process along the assembly line. The inspection is repeated in this way.

[0136] Through the above-mentioned equipment scheme, a multi-station water inspection equipment for water heater tanks of the utility model is suitable for water testing of water heater tanks of various sizes. The original manual single-station water testing is replaced by a multi-station automated water testing, and a servo module is used for loading and inflation testing. This speeds up the testing cycle, improves the production quality and efficiency of the product, and realizes automated testing of water in water heater tanks.

[0137] The above describes the implementation methods of the present application in detail, but the present patent is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present patent.

Claims

1. A multi-station water inspection device for water heater tank, characterized in that: include: A multi-station turntable frame (100), a multi-station water testing and detection mechanism (200) and an accompanying lifting water tank mechanism (300); The multi-station turntable frame (100) is equipped with a multi-station water testing mechanism (200) and an accompanying lifting water tank mechanism (300), and its top can rotate 360 ​​degrees for multi-station conversion; The multi-station water testing mechanism (200) comprises four groups in total, which are arranged around the multi-station turntable frame (100) at 90 degrees, and specifically comprise: a centering clamping mechanism (210), a rotation driving mechanism (220), a follow-up limiting mechanism (230), an inner liner inflation mechanism (240), and an inner liner inflation head assembly (250); The centering clamping mechanism (210) is used to connect the multi-station water testing and detection mechanism (200) and the multi-station turntable frame (100), and is of a gantry structure, comprising a synchronous centering mechanism (211) and square tube arms (212) on both sides, wherein the synchronous centering mechanism (211) is connected to the multi-station turntable frame (100); the two square tube arms (212) are respectively fixed to different output ends of the synchronous centering mechanism (211); The square tube arms (212) on both sides are driven by the synchronous centering mechanism to synchronously move toward the center to clamp the inner liner workpiece; the inner wall of one of the square tube arms (212) is connected to the rotary drive mechanism (220), and the inner wall of the other square tube arm (212) is connected to the follow-up limiting mechanism (230); The inner liner inflation mechanism (240) is assembled on the follower limiting mechanism (230), and after the inner liner workpiece is clamped by the centering clamping mechanism (210), the rotary drive mechanism (220) and the follower limiting mechanism (230) simultaneously rotate to rotate the inner liner counterclockwise by 90 degrees and perform limited positioning; The inner liner inflation mechanism (240) has an output end connected to the inner liner inflation head assembly (250). After the workpiece to be inspected is in place, the inner liner inflation head assembly (250) is extended to align with two water inlets of the workpiece to prepare for inflation inspection; The accompanying lifting water tank mechanism (300) is located at one side of the multi-station turntable frame (100). When the multi-station turntable frame (100) transfers the inner tank workpiece to the accompanying lifting water tank mechanism (300), the water tank is filled with water and a water test is started.

2. A multi-station water inspection device for water heater tank according to claim 1, characterized in that: The multi-station turntable frame (100) comprises: a frame (110), a multi-station turntable (120) and a water tank lifting power mechanism (130); The frame (110) is welded from square tube plates with multiple profiles; The multi-station turntable (120) comprises a turntable body, a transmission gear set and a servo motor 1, wherein the servo motor 1 drives the driving gear of the transmission gear set, and the driven gear of the transmission gear set is rotatably mounted on the frame (110); the turntable body can rotate with the driven gear; The water tank lifting power mechanism (130) is used to drive the lifting of the water tank lifting mechanism (300) and is built in the frame (110).

3. A multi-station water inspection device for water heater tank according to claim 2, characterized in that: The synchronous centering mechanism (211) comprises: A centering frame connected to the multi-station turntable (120) via a connecting plate; The power mechanism is a cylinder, which is fixed to the centering frame of the synchronous centering mechanism (211), and the output end of the cylinder forms the first output end of the synchronous centering mechanism (211) and is connected to the square tube arm (212) on the side of the rotation drive mechanism (220); A slide rail fixed to the centering frame for movement of the two square tube arms (212); A synchronous gear, rotatably mounted on a connecting member, wherein the connecting member is mounted on the connecting plate; and a pair of racks, located on both sides of the synchronous gear and meshing with the outside of the synchronous gear, the pair of racks being fixed to different square tube arms (212); connected to the rack of the follower limiting mechanism (230) to form a second output end of the synchronous centering mechanism (211); After the square tube arm connected to the rotary drive mechanism (220) is subjected to force by the power mechanism, the two racks move toward or in opposite directions via the central synchronous wheel, thereby driving the square tube arms (212) on both sides mounted on the slide rail to move, thereby clamping and releasing the inner container.

4. A multi-station water inspection device for water heater tank according to claim 3, characterized in that: The rotary drive mechanism (220) comprises: a power transmission mechanism (221), a sensing device (222), and an inner container clamping claw (223); The power transmission mechanism (221) is installed in one of the two side square tube arms (212), and uses a motor as a power source to perform belt transmission to rotate the inner liner clamping claw 1 (223) to change the posture of the inner liner workpiece, which specifically includes: Motor 1; A belt transmission unit, wherein the driving pulley is connected to the output end of the motor 1, and the driven pulley is connected to one end of the driving transmission shaft assembly; the other end of the driving transmission shaft assembly is fixed to the inner tank clamping claw 1 (223); The driving shaft of the driving transmission shaft assembly is the axle of the driven pulley, which is rotatably mounted on the corresponding square tube arm (212); The sensing device (222) comprises a sensor and a sensing sheet; The sensors are distributed along the circumference of the sleeve of the active transmission shaft assembly, and the sleeve is sleeved on the active shaft and fixed to the corresponding square tube arm (212); The induction sheet is fixed on a circular ring, and the circular ring is sleeved on the driving shaft.

5. A multi-station water inspection device for water heater tank according to claim 4, characterized in that: The follow-up limiting mechanism (230) comprises: a follow-up mechanism (231) and a second inner container clamping claw (232); The follower mechanism (231) is installed in the square tube arm (212) on the other side, and when the inner container workpiece rotates, it receives the rotational power of the rotation drive mechanism (220) to perform a follower action and rotate; The follower mechanism (231) comprises a cylinder guide assembly, a follower transmission shaft assembly, and a horizontal positioning plate (235); The cylinder guide assembly comprises: a cylinder and a roller (234); the cylinder is fixed to the corresponding square tube arm (212); the roller (234) is rotatably mounted on the output end of the cylinder; One end of the follower transmission shaft assembly is fixed to the second inner container clamping jaw (232), and the other end is installed with a horizontal positioning plate (235); a track matching the roller (234) is provided on the horizontal positioning plate (235).

6. The multi-station water inspection device for the inner tank of a water heater according to claim 5, characterized in that: The inner liner inflation mechanism (240) comprises an inner liner inflation frame (241), a servo screw transmission mechanism (242) and an inflation component (243); The inner liner inflation frame (241) is installed on the inner liner clamping claw 2 (232) of the follow-up limiting mechanism (230); The servo screw transmission mechanism (242) comprises: a second servo motor installed on the inner liner inflation frame (241), the output end of which is connected to the screw transmission mechanism, and the output end of the screw transmission mechanism is connected to the inflation assembly (243).

7. A multi-station water inspection device for water heater tank according to claim 6, characterized in that: The inner liner inflation head assembly (250) comprises an inflation head (251), a silicone pad (252) and a plugging pressing sheet (253) in sequence; The inflation head (251) is connected to the output end of the inflation component (243) to perform extension and retraction actions, and also serves as an air source connection piece; The silicone pad (252) is embedded in the inflation head (251) to buffer the inner liner workpiece pipe interface, and the plugging pressing piece (253) is installed at the bottom of the inflation head (251) to guide the inner liner workpiece pipe interface; The inner liner inflation head assembly (250) has two groups, one group is connected to the water inlet of the inner liner workpiece, and the other group is connected to the water outlet of the inner liner workpiece; When the water test begins, one of the inner liner inflation head assemblies (250) allows air to enter the water inlet, and the other inner liner inflation head assembly (250) seals the inner liner workpiece, and the water outlet is closed, thereby forming a sealed cavity; After the inspection is completed, the inner liner inflation head assembly opens the water outlet to release the pressure, and the inner liner inflation head assembly (250) is retracted to wait for the next inner liner workpiece to be inspected.

8. The multi-station water inspection device for water heater tank according to claim 1, characterized in that: The accompanying lifting water tank mechanism (300) comprises a water tank (310) and a lifting slide rail mechanism (320); The lifting slide rail mechanism (320) is connected to the water tank lifting power mechanism (130), and when the multi-station turntable frame (100) is switched to a different station, the workpiece to be tested is transferred to this station, the water tank is raised, and water testing begins.

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