Acrylic bathtub and high-stability forming process

Abstract

The application relates to the field of bathtubs, in particular to an acrylic bathtub and a high-stability forming process, which comprises a bathtub body, the upper end of the bathtub body is provided with a water storage groove, the groove bottom of the water storage groove is provided with a containing groove, the groove bottom of the containing groove is provided with a water outlet, the water outlet penetrates the bathtub body in the vertical direction, and the groove bottom of the water storage groove and the groove wall of the containing groove are smoothly connected. The groove bottom of the water storage groove and the groove wall of the containing groove form a step, the step is used for abutting against the head or upper body of a user, the height of the head is higher, drowning is not easy, the probability of safety accidents is reduced, and the comfort of the user is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of bathtubs, in particular to an acrylic bathtub and a high-stability forming process. BACKGROUND

[0002] The acrylic bathtub is made of PMMA plastic material, and the bathtub body is composed of a surface layer (an acrylic layer) and an inner layer (a glass fiber resin reinforcing layer). The acrylic bathtub is characterized by rich modeling, light weight, good surface finish, low price, slow heat transfer, and good heat preservation effect. Even in cold winter, the skin touching the surface of the acrylic bathtub body will not feel "cold".

[0003] However, young children often lack enough strength and skills to deal with unexpected situations when using the bathtub. If the children are not properly supervised by their parents, they may be at risk of drowning once they fall into the water. Adults may fall asleep in the bathtub due to fatigue or intoxication, which may also lead to drowning. SUMMARY

[0004] In order to reduce the occurrence of safety accidents, the application provides an acrylic bathtub and a high-stability forming process.

[0005] In a first aspect, the application provides an acrylic bathtub using the following technical solution:

[0006] An acrylic bathtub includes a bathtub body, the upper end of the bathtub body is provided with a water storage tank, the tank bottom of the water storage tank is provided with a containing groove, the groove bottom of the containing groove is provided with a water outlet, the water outlet penetrates the bathtub body in the vertical direction, and the groove bottom of the water storage tank and the groove wall of the containing groove are smoothly connected.

[0007] By using the above technical solution, the groove bottom of the water storage tank and the groove wall of the containing groove form a step, which is used for the head or upper body of the user to lean against, so that the height of the head is higher, and it is not easy to drown, thereby reducing the probability of safety accidents and improving the comfort of the user.

[0008] Preferably, the detection assembly further includes a cylinder, a floating ball, a guide column, an infrared sensor and a controller, the lower end of the cylinder is fixedly connected to the groove bottom of the water storage tank, the floating ball slides up and down in the cylinder, the outer wall of the cylinder is provided with a guide opening, the length direction of the guide opening is vertical, the guide column is fixedly connected to the outer wall of the floating ball, the guide column is slidingly connected to the inner wall of the guide opening, the infrared sensor is connected to the outer wall of the floating ball, and the controller is electrically connected to the infrared sensor.

[0009] By adopting the technical scheme, the guide column slides in the guide opening, the guide column guides the up-and-down sliding of the floating ball, the infrared sensor stably detects whether the person in the cylinder body drowns, the floating ball moves with the water level, the infrared sensor detects whether there is a person on the water surface, when there is no person on the water surface for a period of time, the controller judges that there may be a person drowning, and the probability of safety accidents is reduced.

[0010] Preferably, the alarm bell is electrically connected to the controller.

[0011] By adopting the technical scheme, when the controller judges that there may be a person drowning, the controller controls the alarm bell to issue an alarm, reminds the drowning person to wake up and other people at home to rescue, and the probability of safety accidents is reduced.

[0012] Preferably, the rotating column, the flap and the driving motor are further included, the groove wall of the containing groove is provided with a drain opening, the rotating column is fixedly connected to the outer wall of the flap, the axis of the rotating column is collinear with a diameter of the flap, the rotating column is rotationally connected to the inner wall of the drain opening around the axis thereof, the flap is used for covering the drain opening, the motor shaft of the driving motor is coaxially fixedly connected to the rotating column, and the driving motor is electrically connected to the controller.

[0013] By adopting the technical scheme, when the controller judges that there may be a person drowning, the controller controls the driving motor to drive the flap to rotate, opens the drain opening, and drains the water in the cylinder body, so that the probability of safety accidents is reduced.

[0014] Preferably, the locking assembly further includes a hinged column and a blocking rod, the hinged column is fixedly connected to the outer wall of the cylinder body, the hinged column is arranged at the outer periphery of the drain opening, the axis of the hinged column is parallel to the axis of the drain opening, the blocking rod is provided with a hinge opening, the outer wall of the hinged column is attached to the inner wall of the hinge opening, the blocking rod rotates around the axis of the hinged column, and the blocking rod is used for abutting against the flap.

[0015] By adopting the technical scheme, when there is no person in the cylinder body, the blocking rod abuts against the flap, so that the flap cannot rotate, the probability that the flap mistakenly opens the drain opening when the cylinder body is filled with water is reduced, and the user is facilitated to use.

[0016] Preferably, the locking assembly further comprises a control column, a connecting rod, a locking block, a fixing block and a pull rope, the control column is rotatably connected to the bottom of the water tank around its own axis, the rotation axis of the control column is vertical, one end of the connecting rod is fixedly connected to the outer wall of the control column, the locking block is fixedly connected to the other end of the connecting rod, the locking block is used to extend into the guide port, the lower end of the locking block is used to abut against the guide column, the height of the infrared sensor is greater than the height of the guide column, the locking block is used to shield the infrared sensor, the fixing block is fixedly connected to the outer wall of the cylinder body, the fixing block is provided with a wire passing hole, one end of the pull rope is fixedly connected to the outer wall of the control column, the other end of the pull rope is fixedly connected to the stop rod through the wire passing hole, when the locking block extends into the guide port, the pull rope is taut, so that the stop rod abuts against the flap, and the drain port cannot be opened, when the locking block leaves the guide port, the pull rope is relaxed, and the stop rod rotates away from the flap.

[0017] By adopting the above technical scheme, when the user does not enter the cylinder body, the locking block extends into the guide port, the locking block limits the floating ball, so that the floating ball does not float with the water, the locking block shields the infrared sensor, so that the infrared sensor senses that there is a person, and the probability of mistakenly opening the drain port is reduced, after the water storage is completed, the user enters the cylinder body to take a bath, the control column is rotated to make the locking block away from the guide port, the floating ball floats up, and the detection assembly can normally work, thereby facilitating the user to use.

[0018] Preferably, the locking assembly further comprises a limiting plate, a supporting rod and a distance sensor, the limiting plate slides up and down in the cylinder body, the limiting plate is arranged above the floating ball, the supporting rod is detachably connected to the cylinder body, the supporting rod is used to support the limiting plate, the distance sensor is fixedly connected to the lower end of the limiting plate, the distance sensor is electrically connected to the controller, and the distance sensor is used to detect the distance between the limiting plate and the floating ball, when the distance between the limiting plate and the floating ball is less than a preset value, the controller controls the flap to flip and open the drain port.

[0019] By adopting the above technical scheme, the safety water level height of the cylinder body can be set according to different users, when the water level in the cylinder body exceeds the preset height, the drain port is opened, and the probability of safety accidents is reduced.

[0020] Preferably, the locking assembly further comprises an electromagnet, the electromagnet is fixedly connected to the upper end of the floating ball, the electromagnet is electrically connected to the controller, and the supporting rod is a metal rod.

[0021] By adopting the above technical scheme, when the controller judges that a person may drown, the electromagnet is electrified and the metal rod is attracted to each other, the positions of the floating ball and the limiting plate are relatively fixed, the water in the bathtub can be completely drained, and the probability of safety accidents is reduced.

[0022] Preferably, the water storage tank further comprises an air bag, an air pipe and an air pump, the air bag is embedded in the accommodating groove, the bottom of the accommodating groove is provided with a through hole, the nozzle of the air bag is fixedly connected to the inner wall of the through hole, one end of the air pipe is communicated with the nozzle of the air bag, the other end of the air pipe is communicated with the air outlet of the air pump, and the air pump is electrically connected to the controller.

[0023] By adopting the technical scheme, when the controller determines that a person may be drowning, the air pump starts to inflate the air bag to lift the head of the user, and at the same time, the user is reminded to be awake, thereby reducing the probability of safety accidents.

[0024] In a second aspect, the application provides a high-stability forming process for an acrylic bathtub, which adopts the following technical scheme.

[0025] A high-stability forming process for an acrylic bathtub comprises the following steps.

[0026] A forming film tool is prepared and processed according to a bathtub design drawing;

[0027] Raw materials are prepared, and acrylic plates for manufacturing a cylinder body and a skirt are prepared;

[0028] The cylinder body is formed, the acrylic plate cut according to the requirements of the cylinder body is heated and softened in the furnace of a vacuum forming machine, the softened plate is pressed on a forming mold by a machine, the plate is stretched and deformed by air blowing or vacuum suction, and is adsorbed on the wall of the forming mold, a cooling fan is started to make the plate harden and form, and then the forming bathtub is demolded and taken out;

[0029] The skirt is installed, the acrylic plate cut according to the requirements of the skirt is heated and softened, and the skirt is installed around the outer periphery of the cylinder body, the skirt and the cylinder body are connected by an adhesive, and the formed bathtub is formed after cooling;

[0030] Holes are punched according to the installation requirements.

[0031] By adopting the technical scheme, the cylinder body and the skirt are manufactured separately and then assembled, the manufacturing efficiency of the bathtub is improved, the stability of the bathtub is improved by the skirt, and the bathtub is convenient for drainage and use.

[0032] In summary, the application has at least one of the following beneficial technical effects:

[0033] 1. The bottom of the water storage tank and the wall of the accommodating groove form a step, the step is used for abutting against the head or upper body of the user, the height of the head is higher, the user is less likely to drown, the probability of safety accidents is reduced, and the comfort of the user is improved;

[0034] 2. The guide column slides in the guide port, and the guide column guides the up and down sliding of the floating ball, so that the infrared sensor stably detects whether the person in the cylinder body drowns, the floating ball moves with the water level, the infrared sensor detects whether there is a person on the water surface, when the water surface is empty for a period of time, the controller judges that there may be a person drowning, and reduces the probability of safety accidents;

[0035] 3. When the user does not enter the cylinder body, the locking block extends into the guide port, the locking block limits the floating ball, so that the floating ball does not float with the water, the locking block shields the infrared sensor, so that the infrared sensor senses that there is a person, and reduces the probability of misoperation of opening the drain port, when the water storage is completed, the user enters the cylinder body to take a bath, rotates the control column to make the locking block away from the guide port, the floating ball floats up, and the detection assembly can normally work, which is convenient for the user to use. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a schematic view of the overall structure of the cylinder body and the skirt.

[0037] Figure 2 It is a schematic view of the overall structure of the acrylic bathtub.

[0038] Figure 3 It is a schematic view of the overall structure of the acrylic bathtub, mainly used for showing the air pipe, the air pump and the locking assembly.

[0039] Figure 4 It is an exploded view of the detection assembly, the locking assembly and the auxiliary assembly.

[0040] Figure 5 It is a schematic view of the overall structure of the detection assembly, the protection assembly and the locking assembly.

[0041] Figure 6 It is a schematic view of the overall structure of the cylinder body, the skirt and the detection assembly.

[0042] Explanation of reference signs: 1, cylinder body; 11, water storage groove; 111, placing groove; 112, through port; 12, containing groove; 121, drain port; 13, water outlet; 2, skirt; 3, sewer; 4, detection assembly; 41, cylinder; 411, guide port; 412, water passage; 42, floating ball; 43, guide column; 44, infrared sensor; 45, controller; 5, protection assembly; 51, warning bell; 52, rotating column; 53, flap; 54, driving motor; 55, air bag; 56, air pipe; 57, air pump; 6, locking assembly; 61, hinged column; 62, blocking rod; 621, hinge; 63, control column; 64, connecting rod; 65, locking block; 66, fixed block; 661, wire passage; 67, pull rope; 7, auxiliary assembly; 71, limiting plate; 711, guide rod; 72, supporting rod; 73, distance sensor; 74, electromagnet. DETAILED DESCRIPTION

[0043] The application will be further described below in conjunction with the accompanying drawings. Figures 1-6 The application will be further described below in conjunction with the accompanying drawings.

[0044] The application discloses an acrylic bathtub. Referring to Figure 1 An acrylic bathtub comprises a bathtub body 1, a skirt 2 and a drain 3.

[0045] The upper end of the bathtub body 1 is provided with a water storage groove 11, the groove bottom of the water storage groove 11 is provided with a containing groove 12, the groove bottom of the water storage groove 11 and the groove wall of the containing groove 12 form a step, the thickness of the bathtub body 1 is uniform, the groove bottom of the containing groove 12 is provided with a water outlet 13, the water outlet 13 penetrates the bathtub body 1 along the vertical direction, the drain 3 is fixedly connected to the inner wall of the water outlet 13, and the drain 3 is used for controlling the on-off of the water outlet 13. In the embodiment, the drain 3 is a bounce drain.

[0046] The groove bottom of the water storage groove 11 and the groove wall of the containing groove 12 are smoothly connected. The skirt 2 is sleeved on the outer periphery of the bathtub body 1, the inner wall of the skirt 2 is fixedly connected to the outer wall of the bathtub body 1, the upper end of the skirt 2 is smoothly connected to the upper end of the bathtub body 1, the lower end of the skirt 2 abuts against the ground, and the height of the lower end of the bathtub body 1 is greater than that of the lower end of the skirt 2, thereby facilitating water drainage.

[0047] Referring to Figure 2 and Figure 3 The acrylic bathtub further comprises a detection assembly 4, a protection assembly 5, a locking assembly 6 and an auxiliary assembly 7.

[0048] Referring to Figure 2 and Figure 4 The detection assembly 4 comprises a cylinder 41, a floating ball 42, a guide column 43, an infrared sensor 44 and a controller 45. The cylinder 41 is arranged at an angle of the water storage groove 11 away from the containing groove 12, and the lower end of the cylinder 41 is fixedly connected to the groove bottom of the water storage groove 11. The floating ball 42 slides up and down in the cylinder 41. The outer wall of the cylinder 41 is provided with guide openings 411, the length direction of the guide openings 411 is vertical, and the two guide openings 411 are uniformly and spacedly arranged around the axis of the cylinder 41, one of the two guide openings 411 is directed to the containing groove 12. The outer wall of the cylinder 41 is provided with water passages 412, the water passages 412 are provided in plurality, the plurality of water passages 412 are uniformly and spacedly arranged around the axis of the cylinder 41, and the plurality of water passages 412 are uniformly and spacedly arranged along the axis direction of the cylinder 41.

[0049] Referring to Figure 4The guide column 43 is fixedly connected to the outer wall of the floating ball 42, two guide columns 43 are arranged, the guide column 43 is arranged in one-to-one correspondence with the guide port 411, the guide column 43 is slidably connected to the inner wall of the guide port 411, the infrared sensor 44 is fixedly connected to the outer wall of the floating ball 42 facing the guide port 411, the height of the infrared sensor 44 is greater than the height of the guide column 43, the infrared sensor 44 is used for detecting whether there is a person above the water surface, the controller 45 is fixedly connected to the upper end of the cylinder body 41, and the controller 45 is electrically connected to the infrared sensor 44.

[0050] With reference to Figure 2 and Figure 5 The protection assembly 5 comprises a warning bell 51, a rotating column 52, a flap 53 and a driving motor 54. The warning bell 51 is fixedly connected to the outer wall of the skirt 2, and the warning bell 51 is electrically connected to the controller 45. The controller 45 performs data processing based on the signal sent by the infrared sensor 44. If there is no one on the water surface for a period of time, it is judged that a person may be drowning. The controller 45 controls the warning bell 51 to emit a sound, reminding the drowning person to wake up and other people at home to rescue.

[0051] The groove wall of the containing groove 12 away from the cylinder body 41 is provided with a drainage port 121. The rotating column 52 is fixedly connected to the outer wall of the flap 53, and the axis of the rotating column 52 is collinear with a diameter of the flap 53. Two rotating columns 52 are uniformly and spacedly arranged around the axis of the flap 53. The rotating column 52 is rotationally connected to the inner wall of the drainage port 121 about the axis thereof. The rotating axis of the rotating column 52 is horizontal. The flap 53 is used for covering the drainage port 121. The motor shaft of the driving motor 54 is coaxially fixedly connected to the rotating column 52. The driving motor 54 is electrically connected to the controller 45.

[0052] With reference to Figure 2 and Figure 3 The protection assembly 5 further comprises an air bag 55, an air pipe 56 and an air pump 57.

[0053] With reference to Figure 2 and Figure 6 The groove bottom of the water storage tank 11 is provided with a placing groove 111, and the placing groove 111 is arranged close to the containing groove 12. The air bag 55 is embedded in the placing groove 111. The groove bottom of the placing groove 111 is provided with a through port 112. The bag mouth of the air bag 55 is fixedly connected to the inner wall of the through port 112, and the bag mouth of the air bag 55 extends out of the through port 112 downward.

[0054] With reference to Figure 3 and Figure 6 One end of the air pipe 56 is communicated with the bag mouth of the air bag 55, and the other end of the air pipe 56 is communicated with the air outlet of the air pump 57. The pump shell of the air pump 57 is fixedly connected to the outer wall of the cylinder body 1. The air pump 57 is electrically connected to the controller 45.

[0055] With reference to Figure 4 andFigure 5 The locking assembly 6 comprises a hinged column 61, a blocking rod 62, a control column 63, a connecting rod 64, a locking block 65, a fixing block 66 and a pull rope 67.

[0056] With reference to Figure 3 and Figure 5 The hinged column 61 is fixedly connected to the outer wall of the cylinder body 1, is arranged at the outer periphery of the drain port 121, has an axis parallel to the axis of the drain port 121, has a height smaller than that of the rotating column 52 and greater than that of the lowermost end of the drain port 121, and is provided with a hinged port 621, with the outer wall of the hinged column 61 abutting the inner wall of the hinged port 621. The blocking rod 62 rotates about the axis of the hinged column 61 and is used to abut the flap 53.

[0057] With reference to Figure 3 and Figure 4 The control column 63 is rotationally connected to the bottom of the water storage tank 11 about its own axis, has a vertical rotation axis, and has a lower end extending out of the cylinder body 1. One end of the connecting rod 64 is fixedly connected to the outer wall of the control column 63, and the other end of the connecting rod 64 is fixedly connected to the locking block 65. The locking block 65 is used to extend into the guide port 411 and has a lower end used to abut the upper end of the guide column 43 and to shield the infrared sensor 44.

[0058] With reference to Figure 3 and Figure 5 The fixing block 66 is fixedly connected to the outer wall of the cylinder body 1 and is arranged below the hinged column 61. The fixing block 66 is provided with a wire passing port 661 that penetrates the fixing block 66 in the vertical direction. The pull rope 67 is arranged below the cylinder body 1, has one end fixedly connected to the outer wall of the control column 63, and has the other end fixedly connected to the end of the blocking rod 62 with a smaller force arm after passing through the wire passing port 661. When the locking block 65 extends into the guide port 411, the pull rope 67 is pulled tight, so that the blocking rod 62 abuts the flap 53 and the drain port 121 cannot be opened. When the locking block 65 leaves the guide port 411, the pull rope 67 is relaxed, and the blocking rod 62 rotates away from the flap 53 under the action of gravity.

[0059] With reference to Figure 3 and Figure 4The auxiliary assembly 7 comprises a limiting plate 71, a support rod 72, a distance sensor 73 and an electromagnet 74. The limiting plate 71 slides up and down in the cylinder body 41 and is arranged above the floating ball 42. The outer wall of the limiting plate 71 is fixedly connected with guide rods 711. The guide rods 711 are arranged in pairs and correspond to the guide openings 411. The guide rods 711 are slidingly connected to the inner walls of the guide openings 411. Six water passages 412 are arranged around the outer wall of the cylinder body 41. The support rod 72 penetrates through two opposite water passages 412 and is used for supporting the limiting plate 71. The distance sensor 73 is fixedly connected to the lower end of the limiting plate 71 and is electrically connected to the controller 45. The distance sensor 73 is used for detecting the distance between the limiting plate 71 and the floating ball 42. When the distance between the limiting plate 71 and the floating ball 42 is less than a preset value, the controller 45 controls the flap 53 to flip and the drain 121 to open. The electromagnet 74 is fixedly connected to the upper end of the floating ball 42 and is electrically connected to the controller 45. The support rod 72 is a metal rod.

[0060] The implementation principle of the acrylic bathtub is as follows: when the bathtub is empty, the locking assembly 6 makes the locking block 65 block the infrared sensor 44, so that the infrared sensor 44 determines that there is a person, the blocking rod 62 blocks the flap 53 from flipping, and the drain 121 is in a closed state. When the bathtub is filled with water, the user manually rotates the hinge column 61 to make the locking block 65 away from the guide opening 411, the blocking rod 62 away from the flap 53, and the floating ball 42 float up. When the infrared sensor 44 detects that there is no one on the water surface, the controller 45 processes the data. When there is no one on the water surface for a period of time, the alarm bell 51 issues an alarm, the flap 53 flips, the drain 121 opens, the air pump 57 starts, the air bag 55 inflates, the electromagnet 74 is powered on, the position of the floating ball 42 is fixed relative to the limiting plate 71, and stable drainage is ensured. When the cylinder body 1 is filled with water, the limiting plate 71 presets the highest water level, and the distance sensor 73 detects the distance from the detection point to the water surface. When the distance is less than a preset value, the controller 45 controls the drain 121 to open.

[0061] The embodiment of the application also discloses a high-stability forming process for the acrylic bathtub. Figure 1 The high-stability forming process for the acrylic bathtub comprises the following steps:

[0062] Prepare a forming film tool according to a bathtub design drawing;

[0063] Prepare raw materials, acrylic plates for manufacturing the cylinder body 1 and the skirt 2;

[0064] The cylinder 1 is formed, the acrylic plate cut according to the requirement of the cylinder 1 is heated and softened in the furnace of the plastic forming machine, the softened plate is pressed on the forming die by the machine, the plate is stretched and deformed by the blowing suction of the compressed air or vacuum, is adsorbed on the wall of the forming die, the cooling fan is started, the plate is hardened and formed, then is demoulded, and the formed bathtub is taken out;

[0065] The skirt 2 is installed, the acrylic plate cut according to the requirement of the skirt 2 is heated and softened, the skirt 2 is installed around the outer periphery of the cylinder 1, the skirt 2 is connected with the cylinder 1 through the adhesive, and the formed bathtub is formed after cooling;

[0066] Punching, punching is performed on the formed bathtub according to the installation requirement.

[0067] The implementation principle of the high-stability forming process of the acrylic bathtub is that the cylinder 1 and the skirt 2 are manufactured separately and assembled, the manufacturing efficiency of the bathtub is improved, the stability of the bathtub is improved by the skirt 2, drainage is facilitated, and the user is facilitated to use.

[0068] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. An acrylic bathtub, characterized in that: Includes a cylinder body (1), the upper end of which is provided with a water storage tank (11), the bottom of which is provided with a receiving tank (12), and the bottom of which is provided with a drain outlet (121). It also includes a detection component (4), which includes a cylinder (41), a float (42), a guide post (43), an infrared sensor (44), and a controller (45). The lower end of the cylinder (41) is fixedly connected to the bottom of the water storage tank (11). The float (42) slides up and down inside the cylinder (41). The outer wall of the cylinder (41) is provided with a guide opening (411). The length direction of the guide opening (411) is vertical. The guide post (43) is fixedly connected to the outer wall of the float (42). The guide post (43) is slidably connected to the inner wall of the guide opening (411). The infrared sensor (44) is connected to the outer wall of the float (42). The controller (45) is electrically connected to the infrared sensor (44). It also includes a rotating column (52), a flap (53) and a drive motor (54). The wall of the receiving groove (12) is provided with a drain outlet (121). The rotating column (52) is fixedly connected to the outer wall of the flap (53). The axis of the rotating column (52) is collinear with one diameter of the flap (53). The rotating column (52) is rotatably connected to the inner wall of the drain outlet (121) around its own axis. The flap (53) is used to cover the drain outlet (121). The motor shaft of the drive motor (54) is coaxially fixedly connected to the rotating column (52). The drive motor (54) is electrically connected to the controller (45). It also includes a locking assembly (6), which includes a hinge pin (61) and a stop bar (62). The hinge pin (61) is fixedly connected to the outer wall of the cylinder body (1). The hinge pin (61) is located on the outer periphery of the drain port (121). The axis of the hinge pin (61) is parallel to the axis of the drain port (121). The stop bar (62) is provided with a hinge interface (621). The outer wall of the hinge pin (61) is attached to the inner wall of the hinge interface (621). The stop bar (62) rotates around the axis of the hinge pin (61). The stop bar (62) is used to abut against the flap (53). The locking assembly (6) further includes a control post (63), a connecting rod (64), a locking block (65), a fixing block (66), and a pull rope (67). The control post (63) is rotatably connected to the bottom of the water storage tank (11) around its own axis. The rotation axis of the control post (63) is vertical. One end of the connecting rod (64) is fixedly connected to the outer wall of the control post (63). The locking block (65) is fixedly connected to the other end of the connecting rod (64). The locking block (65) is used to extend into the guide port (411). The lower end of the locking block (65) is used for the guide post (43) to abut against. The height of the infrared sensor (44) is greater than the height of the guide post (43). The locking block (65) is used to block the infrared sensor (44). The fixing block (66) is fixedly connected to the outer wall of the cylinder (1). The fixing block (66) is provided with a wire passage (661). One end of the pull rope (67) is fixedly connected to the outer wall of the control column (63). The other end of the pull rope (67) passes through the wire passage (661) and is fixedly connected to the stop bar (62). When the locking block (65) is inserted into the guide port (411), the pull rope (67) is tightened, so that the stop bar (62) abuts against the flap (53) and the drain port (121) cannot be opened. When the locking block (65) leaves the guide port (411), the pull rope (67) is loosened and the stop bar (62) rotates away from the flap (53).

2. An acrylic bathtub according to claim 1, characterized in that: It also includes an alarm bell (51), which is electrically connected to the controller (45).

3. An acrylic bathtub according to claim 1, characterized in that: It also includes a limiting plate (71), a support rod (72) and a distance sensor (73). The limiting plate (71) slides up and down inside the cylinder (41). The limiting plate (71) is located above the float (42). The support rod (72) is detachably connected to the cylinder (41) and is used to support the limiting plate (71). The distance sensor (73) is fixedly connected to the lower end of the limiting plate (71) and is electrically connected to the controller (45). The distance sensor (73) is used to detect the distance from the limiting plate (71) to the float (42). When the distance from the limiting plate (71) to the float (42) is less than a preset value, the controller (45) controls the flap (53) to flip and the drain outlet (121) to open.

4. An acrylic bathtub according to claim 3, characterized in that: It also includes an electromagnet (74), which is fixedly connected to the upper end of the float (42), and the electromagnet (74) is electrically connected to the controller (45). The support rod (72) is a metal rod.

5. An acrylic bathtub according to claim 1, characterized in that: It also includes an airbag (55), an air tube (56) and an air pump (57). The bottom of the water tank (11) is placed in a groove (111). The airbag (55) is embedded in the groove (111). The bottom of the groove (111) is provided with an opening (112). The nozzle of the airbag (55) is fixedly connected to the inner wall of the opening (112). One end of the air tube (56) is connected to the nozzle of the airbag (55). The other end of the air tube (56) is connected to the air outlet of the air pump (57). The air pump (57) is electrically connected to the controller (45).

6. A high-stability molding process for acrylic bathtubs, applied to an acrylic bathtub as described in any one of claims 1-5, characterized in that, Includes the following steps: Prepare the molding mold and process the molding mold according to the bathtub design drawings; Raw material preparation: Prepare acrylic sheets for manufacturing cylinder body (1) and skirt (2); Cylinder body (1) forming: The acrylic sheet cut according to the requirements of cylinder body (1) is heated and softened in the furnace of the vacuum forming machine. The softened sheet is mechanically pressed onto the forming mold. The sheet is stretched and deformed by compressed air or vacuum blowing and suction, adsorbed onto the wall of the forming mold. The cooling fan is started to harden the sheet and form it. Then the mold is demolded and the formed bathtub is taken out. Skirt (2) installation: The acrylic sheet cut according to the skirt (2) requirements is heated and softened, and the skirt (2) is installed around the outer periphery of the tub (1). The skirt (2) and the tub (1) are connected by adhesive, and after cooling, a molded bathtub is formed. Drill holes in the molded bathtub according to the installation requirements.

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