Toothpaste simulation preparation device

By designing a toothpaste paste simulation preparation device and using transparent cans and light-chasing light belts to simulate the paste preparation process, the problem that the existing intelligent experience production line cannot realize real-time visualization of paste preparation is solved, and the user's sense of participation and satisfaction is significantly improved.

CN223022812UActive Publication Date: 2025-06-24CHONGQING DENCARE CORP
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Patent Information

Application Number
CN202422209343.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-09
Publication Date
2025-06-24
Estimated Expiration
2034-09-09

AI Technical Summary

Technical Problem

The existing intelligent experience production line cannot achieve real-time visualization during paste preparation, resulting in users being unable to witness the mixing and stirring of raw materials with their own eyes, reducing users' sense of participation and satisfaction.

Method used

A toothpaste paste simulation preparation device is designed, including a mounting rack, a transparent raw material tank, a mixing and stirring tank and a simulated paste conveying area. The liquid flow is simulated through the light-chasing light belt to show the mixing and stirring process of paste raw materials.

Benefits of technology

Through intuitive visual display, users' sense of participation and satisfaction are enhanced, making it feel as if they have personally participated in the production process of toothpaste. At the same time, the device simplifies the complex mixing and stirring process, allowing non-professionals to understand the basic process of toothpaste production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of industrial simulation and display, and discloses a toothpaste body simulation preparation device which comprises a mounting frame, a plurality of raw material tanks and a mixing and stirring tank, the raw material tanks and the mixing and stirring tank are fixedly mounted on the mounting frame, discharge ports of the plurality of raw material tanks are communicated with a feed port of the mixing and stirring tank through raw material pipes, and the feed port of the mixing and stirring tank is communicated with a discharge port of the mixing and stirring tank. A discharge hole of the mixing and stirring tank is communicated with the simulated paste conveying area through a raw material pipe; the raw material tank, the mixing and stirring tank and the raw material pipe are all transparent tank bodies or transparent pipe bodies, colorless liquid is filled in the raw material tank, the mixing and stirring tank and the raw material pipe, and the raw material tank, the mixing and stirring tank and the raw material pipe are all provided with follow spot lamp belts used for simulating liquid flowing. The color of the lamp strip of the raw material pipe is the same as that of the lamp strip of the tank body of the discharge port communicated with the raw material pipe; the colors of the lamp strips of different raw material tanks and mixing and stirring tanks are different; the technical problem that a paste raw material preparation process cannot be displayed in the prior art is solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of industrial simulation and display, and in particular to a toothpaste paste simulation preparation device. Background Art

[0002] In today's market environment that pursues personalization and participation, the smart experience production line has emerged to meet consumers' curiosity and desire to participate in the product production process. This innovative production model not only transforms the traditional production process into an interactive and attractive user experience, but also gives users a unique opportunity to customize their own products. Through the smart experience production line, users can witness and participate in the birth process of their own exclusive products, from the selection of raw materials to the production of finished products.

[0003] However, in the existing smart experience production line, although the linear visualization of the entire process from filling, packaging to product pickup has been achieved, there is still a technical bottleneck in the key link of paste preparation. Since paste products such as toothpaste often have a variety of flavor formulas, in order to ensure the quality and consistency of the final product, the paste raw materials usually need to be prefabricated in advance. This means that the pastes directly filled on the visualized production line are all prefabricated products, rather than being prepared on site in real time.

[0004] This makes it impossible for users to witness the mixing, stirring and other preparation processes of the paste raw materials on the production line, and thus they cannot get a complete production line experience. The incompleteness of this experience greatly reduces the user's sense of participation and satisfaction. Utility Model Content

[0005] The utility model aims to provide a toothpaste paste simulation preparation device to solve the technical problem that the prior art cannot display the preparation process of the paste raw materials.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a toothpaste paste simulation preparation device, comprising a mounting frame, a raw material tank and a mixing and stirring tank, the raw material tank and the mixing and stirring tank are fixedly mounted on the mounting frame, there are multiple raw material tanks, the discharge ports of the multiple raw material tanks are connected to the feed port of the mixing and stirring tank through a raw material pipe, and the discharge port of the mixing and stirring tank is connected to the simulated paste delivery area through the raw material pipe;

[0007] The raw material tank, mixing tank and raw material tube are all transparent tank bodies or transparent tube bodies, and are filled with colorless liquid. The raw material tank, mixing tank and raw material tube are all provided with a spotlight strip for simulating liquid flow. The color of the light strip of the raw material tube is the same as the color of the light strip of the tank body of the discharge port connected to it, and the light strips of different raw material tanks and mixing tanks have different colors.

[0008] The principle and advantages of this solution are as follows: In practical applications, the effect of liquid flow is simulated by a follow-up light belt. The first raw material tank and the second raw material tank simulate different toothpaste raw materials through different colors, such as red and blue liquids or lighting effects. Each raw material flows into the mixing and stirring tank through its respective pipeline, namely the first raw material pipe and the second raw material pipe; in the mixing and stirring tank, the two raw materials are fully mixed and stirred to form a simulated paste product, and the color is the mixture of the colors of the two raw materials, such as purple. The finished paste flows to the simulated paste output area to display the preparation process and final form of the paste.

[0009] Through the transparent tank body and pipe body, users can clearly see the entire process of toothpaste raw materials from the raw material tank to the mixing and stirring tank and then to the simulated paste output area. This intuitive visual display greatly enhances the user's sense of participation and satisfaction, making them feel as if they have personally participated in the toothpaste production process. Moreover, the device simplifies the complex paste mixing and stirring process into an intuitively visible liquid flow and color change. This visual simplification enables non-professionals to easily understand the basic process of toothpaste production and enhances the display effect.

[0010] As an improvement, it also includes a cleaning pipeline. The cleaning pipeline includes a main cleaning pipe and cleaning branch pipes. The liquid outlet of the main cleaning pipe is connected to multiple cleaning branch pipes, and the liquid outlets of each cleaning branch pipe are respectively connected to the raw material tank and the mixing and stirring tank; the cleaning branch pipes are transparent pipe bodies, the cleaning branch pipes are filled with colorless liquid, the cleaning branch pipes are provided with the light belts, and the color of the light belts of the cleaning branch pipes is different from the color of the light belts of the raw material tank and the mixing and stirring tank; valves are provided on both the cleaning branch pipes and the raw material pipes connected to the raw material tank.

[0011] The beneficial effect of this improvement is that when it is necessary to simulate the preparation of pastes with different flavors, control the light belts of the cleaning branch pipes to light up, indicating that the cleaning operation is in progress. The cleaning process includes injecting liquid into each tank body through the cleaning branch pipes to ensure the cleanliness of the raw material tank and the mixing and stirring tank and avoid cross-flavor contamination. After the cleaning is completed, change the color of the liquid in the raw material tank to simulate new flavor raw materials. By simulating the cleaning process, the device can more realistically restore the emphasis on equipment cleaning in actual production. Make the entire simulation process more vivid and lifelike.

[0012] The use process of this technical means closely adheres to the logical sequence of processing toothpastes with multiple flavors in actual production. From cleaning the equipment to changing raw materials, each step is strictly simulated according to the production process, enabling the audience to clearly understand the entire production process. This highly restored production logic not only enhances the trust of the audience but also strengthens their recognition of the brand's professionalism and production capacity.

[0013] As an improvement, it also includes a return water pipeline. The return water pipeline includes multiple return water pipes, the return water pipes are hidden, each return water pipe is respectively connected to the simulated paste output area and the raw material tank, and valves and water pumps are provided on the return water pipes.

[0014] The beneficial effects of this improvement are as follows: The design of the return water pipeline allows the recycled use of the liquid after use during the simulated preparation process. By controlling the opening and closing of the valves, these liquids can be pumped back from the simulated paste feeding area or the raw material tank after cleaning, avoiding unnecessary waste, thus realizing the circulating flow of water. The valves and water pumps provided on the return water pipeline offer flexible multi-directional control functions. As needed, different return water pipelines can be opened individually or simultaneously to direct the liquid to the designated position for recycling or reuse.

[0015] As an improvement, the front part of the mounting frame is the user tour area, and the rear part of the mounting frame is used to install the electric control system. A maintenance door is provided beside the mounting frame. The simulated paste feeding area includes a transparent tube group, which is arranged on the front of the maintenance door. The transparent tube group includes multiple transparent tubes arranged along the width direction of the maintenance door, and the transparent tube group is provided with the light strip.

[0016] The beneficial effects of this improvement are as follows: By setting the user tour area at the front of the mounting frame and installing the electric control system at the rear, and cleverly using the production line as a partition, the tourist visit area and the equipment maintenance area are effectively distinguished. The maintenance door is cleverly arranged inside the device, avoiding the problem that the production continuity may be interrupted when setting the maintenance door in the subsequent process. The transparent tube group presents a linearly connected effect visually. Even if the maintenance door is hidden, the entire production line still appears beautiful and complete, enhancing the overall display effect.

[0017] As an improvement, a water pump is provided on the raw material pipe connecting the mixing and stirring tank and the simulated paste feeding area.

[0018] The beneficial effects of this improvement are as follows: The addition of the water pump significantly enhances the liquid transportation capacity in the raw material pipe. It can ensure that the simulated liquid prepared in the mixing and stirring tank can be stably and quickly transported to the simulated paste feeding area, thus meeting the flow rate and pressure requirements during the simulated display process.

[0019] As an improvement, a stainless steel stirring paddle is provided inside the mixing and stirring tank.

[0020] The beneficial effects of this improvement are as follows: It makes the stirring operation more intuitive and obvious.

[0021] As an improvement, support feet and casters are provided at the bottom of the mounting frame and the maintenance door. The support feet are movably connected to the mounting frame and the maintenance door, and rubber foot pads are provided at the bottom of the support feet.

[0022] The beneficial effects of this improvement are as follows: The addition of the casters enables the entire device to be easily moved between different positions. Description of the Drawings

[0023] Figure 1Schematic diagram of pipeline connection for an embodiment of the present utility model.

[0024] Figure 2 Schematic structural diagram of an embodiment of the present utility model. Detailed implementation manners

[0025] The following is a further detailed description through specific implementation manners:

[0026] Reference numerals in the accompanying drawings of the specification include: first raw material tank 1, second raw material tank 2, mixing and stirring tank 3, first raw material pipe 4, second raw material pipe 5, third raw material pipe 6, main cleaning pipe 7, cleaning branch pipe 8, return water pipeline 9, first pneumatic butterfly valve 10, second pneumatic butterfly valve 11, third pneumatic butterfly valve 12, fourth pneumatic butterfly valve 13, fifth pneumatic butterfly valve 14, sixth pneumatic butterfly valve 15, seventh pneumatic butterfly valve 16, first water pump 17, second water pump 18, third water pump 19, simulated paste feeding area 20, mounting rack 21, maintenance door 22, support feet 23 and casters 24.

[0027] Embodiment

[0028] Basically as shown in the attached Figure 1 figures, a toothpaste paste simulation preparation device is provided. This toothpaste paste simulation preparation device is arranged beside a toothpaste filling machine and is located at the front end of the route for users to visit the production line; the front part of the toothpaste paste simulation preparation device is the tourist area for users, and the rear part of the toothpaste paste simulation preparation device is used for installing an electric control system to control the operation of each electrical component and provide power.

[0029] The toothpaste paste simulation preparation device includes a mounting rack 21. The raw material tanks and the mixing and stirring tank 3 are fixedly installed inside the mounting rack 21. There are two raw material tanks, namely the first raw material tank 1 and the second raw material tank 2; the first raw material tank 1 and the second raw material tank 2 are distributed left and right above the mixing and stirring tank 3.

[0030] The inlets and outlets of the first raw material tank 1, the second raw material tank 2 and the mixing and stirring tank 3 are respectively located at the top and bottom of the tank body. The outlets of the first raw material tank 1 and the second raw material tank 2 are respectively communicated with the inlets of the mixing and stirring tank 3 through the first raw material pipe 4 and the second raw material pipe 5. The mixing and stirring tank 3 is communicated with the simulated paste feeding area 20 through the third raw material pipe 6.

[0031] A cleaning pipeline is also provided between the raw material tanks and the mixing and stirring tank 3. The cleaning pipeline includes a main cleaning pipe 7 and cleaning branch pipes 8. The main cleaning pipe 7 includes a liquid inlet and a liquid outlet. The liquid of the toothpaste paste simulation preparation device is poured into the main cleaning pipe 7 from the liquid inlet. The liquid outlet of the main cleaning pipe 7 is communicated with the cleaning branch pipes 8. There are 3 cleaning branch pipes 8, which are respectively communicated with the first raw material tank 1, the second raw material tank 2 and the mixing and stirring tank 3 by the main cleaning pipe 7.

[0032] A return water pipeline 9 is also provided between the raw material tank and the mixing and stirring tank 3. The return water pipeline 9 includes multiple return water pipes, which are hidden. Each return water pipe connects the simulated paste conveying area 20 with the first raw material tank 1 and the second raw material tank 2.

[0033] Pneumatic butterfly valves are provided on the pipe body. A first pneumatic butterfly valve 10 is provided on the cleaning branch pipe 8 connected to the feed inlet of the first raw material tank 1, a second pneumatic butterfly valve 11 is provided on the cleaning branch pipe 8 connected to the feed inlet of the second raw material tank 2, and a third pneumatic butterfly valve 12 is provided on the cleaning branch pipe 8 connected to the feed inlet of the mixing and stirring tank 3; a fourth pneumatic butterfly valve 13 and a fifth pneumatic butterfly valve 14 are respectively provided on the first raw material pipe 4 and the second raw material pipe 5, and sixth pneumatic butterfly valves 15 and seventh pneumatic butterfly valves 16 are respectively provided on the return water pipes connecting the first raw material tank 1 and the second raw material tank 2.

[0034] A water pump is also provided on the pipe body. A first water pump 17 is provided on the third raw material pipe 6, and second water pumps 18 and third water pumps 19 are respectively provided on the return water pipes connecting the first raw material tank 1 and the second raw material tank 2.

[0035] The pipe body and the tank body of the toothpaste paste simulation preparation device are both filled with colorless liquid, and the raw material tank, the mixing and stirring tank 3, the raw material pipes and the cleaning pipeline are all made of transparent tank bodies or transparent pipe bodies. The transparent tank body or transparent pipe body is made of plexiglass, and a stirring paddle made of stainless steel is provided inside the mixing and stirring tank 3.

[0036] Light chasing light belts for simulating liquid flow are provided on the raw material tank, the mixing and stirring tank 3, the raw material pipes and the cleaning pipeline. The light chasing light belt is a lighting product that combines light chasing technology and light belt design, and usually can produce flowing and changing light effects. The light chasing light belt uses LED technology and is powered by a constant current power supply. The positive and negative poles of the LED lamp are connected to the constant current source through resistors. When the power supply outputs voltage, according to Ohm's law and Kirchhoff's voltage law, the LED lamp starts to emit light, and flowing, changing and other light effects are realized through a specific circuit design.

[0037] The light belt colors of the first raw material pipe 4, the second raw material pipe 5 and the third raw material pipe 6 are respectively the same as the light belt colors of the first raw material tank 1, the second raw material tank 2 and the mixing and stirring tank 3, and the light belt colors of the first raw material pipe 4, the second raw material pipe 5, the third raw material pipe 6 and the cleaning pipeline are all different.

[0038] As shown in the Figure 2 appendix, the toothpaste paste simulation preparation device further includes a maintenance door 22. The maintenance door 22 is arranged on the left side of the mounting frame 21. The maintenance door 22 and the mounting frame 21 are fixedly connected. The simulated paste conveying area 20 includes a transparent pipe group. The transparent pipe group is arranged on the front of the maintenance door 22. The transparent pipe group includes multiple transparent pipes arranged along the width direction of the maintenance door 22, and the light chasing light belt is provided on the transparent pipe group.

[0039] The arrangement of the transparent pipe group presents the third raw material pipe 6 connecting to the mixing and stirring tank 3. Through ingenious layout, it simulates the flow path of the paste, showing that the prepared paste raw material is transported from the mixing and stirring tank 3, passes through the maintenance door 22 and then moves up to the second-floor storage area, while the raw material for actual filling on the production line is transported downward from the prefabricated paste on the second floor through the material pipeline. The transparent pipe group does not actually directly participate in the actual preparation of the paste, but serves as a visual guide. It forms a situation where it seems that the paste is flowing out of the simulated mixing and stirring tank 3, passing through the set path, including the area of the maintenance door 22, and finally "rising" to the simulated storage area on the second floor. This ensures the separation and complementarity of production efficiency and simulation display.

[0040] Even if it does not directly participate in actual production, the simulated paste conveying area 20 complements the complete production chain from raw material mixing to product filling through its visual design, making the display more comprehensive and vivid. By using modern display means such as transparent pipe bodies and spotlight belts, it innovatively simulates the process of paste flow, breaking the limitations of traditional static displays. Although the simulated paste conveying area 20 mainly serves for display, its design is flexible, and the layout and display content can be adjusted according to actual needs to adapt to the display requirements of different occasions. Compared with directly displaying the actual production process, the simulated paste conveying area 20 is more economical in cost and can achieve similar or even better display effects.

[0041] Among them, since the tour area and the electric control system are blocked by the production line, and the production line is continuous in the whole process, in order to facilitate the staff to enter the electric control system at the back from the front, the maintenance door 22 is set inside the toothpaste paste simulation preparation device, avoiding interrupting the production continuity caused by setting the maintenance door 22 in the subsequent process.

[0042] Then the liquid does not flow in the transparent pipe in front of the maintenance door 22. The transparent pipe group is in a three-section form. One section is connected to the third raw material pipe 6 and is truncated at the connection between the mounting bracket 21 and the maintenance door 22; one section is truncated from the connection between the mounting bracket 21 and the maintenance door 22 to the top of the maintenance door 22, and both ends of this section are closed and set inside the maintenance door 22; one section is from the top of the maintenance door 22 to the ceiling area; although the three-section transparent pipe group is not connected to each other, it shows a linear connection visually. The maintenance door 22 is concealed, making the whole production line more beautiful and complete.

[0043] The light belts of different transparent pipes in the transparent pipe group present different colors, simulating pastes of different flavors prepared by the mixing and stirring tank 3. The light belts of different colors directly correspond to pastes of different flavors, enabling the clear perception of the product diversity in a non-physical display environment.

[0044] The bottom of the mounting bracket 21 and the maintenance door 22 is provided with feet 23 and casters 24. The feet 23 are threadedly connected to the mounting bracket 21 and the maintenance door 22. By rotating the feet 23, the length of the feet 23 extending out of the mounting bracket 21 and the maintenance door 22 can be adjusted. When the casters 24 are required to function, rotate the feet 23 to shorten them, so that the casters 24 serve as the main support points, enabling the staff to push the mounting bracket 21 and the maintenance door 22 for easy movement; when the feet 23 function, rotate the feet 23 to extend them, so that the feet 23 serve as the main support points and the casters 24 are suspended, facilitating the fixed placement of the mounting bracket 21 and the maintenance door 22. The bottom of the feet 23 is provided with rubber foot pads to prevent the mounting bracket 21 and the maintenance door 22 from sliding.

[0045] The specific implementation process is as follows:

[0046] The liquid inlet of the main cleaning pipe 7 is responsible for filling the entire system with a flowing liquid, namely water or a special transparent liquid, to simulate the flow of raw materials. The first raw material tank 1 and the second raw material tank 2 simulate different toothpaste raw materials through different colors, such as red and blue liquids or lighting effects. Each raw material flows into the mixing and stirring tank 3 through its respective pipeline, namely the first raw material pipe 4 and the second raw material pipe 5.

[0047] In the mixing and stirring tank 3, the two raw materials are fully mixed and stirred to form a simulated paste finished product, the color of which is a mixture of the colors of the two raw materials, such as purple. The finished paste flows to the simulated paste conveying area 20 to display the preparation process and the final form of the paste.

[0048] When it is necessary to simulate the preparation of pastes with different flavors, the light strip of the cleaning branch pipe 8 is controlled to light up, indicating that the cleaning operation is in progress. The cleaning process includes injecting liquid into each tank via the cleaning branch pipe 8 to ensure the cleanliness of the raw material tanks and the mixing and stirring tank 3 and avoid flavor cross-contamination. After the cleaning is completed, the liquid color in the raw material tanks is changed to simulate new flavor raw materials.

[0049] The liquid flowing out of the mixing and stirring tank 3 flows back to the first raw material tank 1 and the second raw material tank 2 through the hidden water return pipe, and the circulation is realized by the driving of the second water pump 18 and the third water pump 19. This saves water resources.

[0050] The water return pipeline 9 not only connects the simulated paste conveying area 20 with the first raw material tank 1 and the second raw material tank 2, but also has a water return pipe connected to the cleaning branch pipe 8. Moreover, the second water pump 18 and the third water pump 19 are respectively located before the bifurcation of the pipeline connecting the raw material tank and the cleaning pipeline, providing driving force for the entire loop. By controlling the pneumatic butterfly valves on each pipe, the control of the water flow direction is further realized to better cooperate with the lighting display.

[0051] The change of the light strip in the toothpaste paste simulation preparation device is actually an abstraction and simplification of the key steps such as mixing and stirring, and flow filling in the actual production line, enabling the audience to have a general understanding of the complex production process in a short time.

[0052] The above are only the embodiments of the present invention, and the specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and other records in the specification can be used to interpret the content of the claims.

Claims

1. A toothpaste paste simulation preparation device, characterized in that: It includes a mounting frame, a raw material tank and a mixing and stirring tank, the raw material tank and the mixing and stirring tank are fixedly mounted on the mounting frame, there are multiple raw material tanks, the discharge ports of the multiple raw material tanks are connected to the feed port of the mixing and stirring tank through a raw material pipe, and the discharge port of the mixing and stirring tank is connected to the simulated ointment delivery area through the raw material pipe; The raw material tank, mixing tank and raw material tube are all transparent tank bodies or transparent tube bodies, and are filled with colorless liquid. The raw material tank, mixing tank and raw material tube are all provided with a spotlight strip for simulating liquid flow. The color of the light strip of the raw material tube is the same as the color of the light strip of the tank body of the discharge port connected to it, and the light strips of different raw material tanks and mixing tanks have different colors.

2. The toothpaste paste simulation preparation device according to claim 1, characterized in that: It also includes a cleaning pipeline, which includes a cleaning main pipe and a cleaning branch pipe. The liquid outlet of the cleaning main pipe is connected to multiple cleaning branch pipes, and the liquid outlets of each cleaning branch pipe are respectively connected to the raw material tank and the mixing and stirring tank; the cleaning branch pipe is a transparent tube body, and the cleaning branch pipe is filled with colorless liquid. The cleaning branch pipe is provided with the light strip, and the color of the light strip of the cleaning branch pipe is different from the color of the light strip of the raw material tank and the mixing and stirring tank; valves are provided on the cleaning branch pipe and the raw material pipe connected to the raw material tank.

3. The toothpaste paste simulation preparation device according to claim 2, characterized in that: It also includes a return water pipeline, which includes multiple return water pipes. The return water pipes are hidden, and each return water pipe is connected to the simulated ointment delivery area and the raw material tank respectively. The return water pipes are provided with valves and water pumps.

4. The toothpaste simulation preparation device according to claim 3, characterized in that: The front part of the mounting frame is a user tour area, the rear part of the mounting frame is used to install the electric control system, a maintenance door is provided next to the mounting frame, the simulated ointment infusion area includes a transparent tube group, the transparent tube group is arranged in front of the maintenance door, the transparent tube group includes a plurality of transparent tubes arranged along the width direction of the maintenance door, and the transparent tube group is provided with the light strip.

5. The toothpaste simulation preparation device according to claim 4, characterized in that: A water pump is provided on the raw material pipe connecting the mixing and stirring tank and the simulated ointment delivery area.

6. The toothpaste simulation preparation device according to claim 5, characterized in that: A stainless steel stirring paddle is arranged in the mixing and stirring tank.

7. The toothpaste simulation preparation device according to claim 6, characterized in that: The bottom of the mounting frame and the maintenance door are provided with supporting feet and casters, the supporting feet are movably connected with the mounting frame and the maintenance door, and the bottom of the supporting feet is provided with rubber foot pads.