A calendering apparatus for producing a silica gel pad and a method of using the same

Abstract

The application provides a calendering equipment for silica gel pad production, which comprises an oiling device above a first compression roller; the oiling device comprises an oil supply structure and a brush roller structure; the brush roller structure comprises a supporting roller, a brush roller and a scraping roller; the supporting roller is driven to rotate by a first motor; the supporting roller is provided with an oil cavity and a groove, and the groove is communicated with the oil cavity through a column cavity; the brush roller is installed at the groove and is used for contacting and oiling the first compression roller, and the brush roller is driven to rotate by a second motor; the scraping roller is driven to rotate by a third motor, so as to realize the communication or interruption between the groove and the oil cavity; the outer wall of the scraping roller is provided with a scraper, which is used for scraping and removing oil from the outer wall of the brush roller; the oil supply structure is used for oil supply and oil extraction in the oil cavity; the oil supply structure can change the position of the component for oiling, automatically supplement oil, and remove excessive oil, so that the component for oiling can provide appropriate oiling amount, and the overall oiling quality is effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of calendering equipment, and more specifically, to a calendering equipment for producing silicone pads and its method of use. Background Technology

[0002] In the production and processing of silicone pads, calenders are a commonly used molding equipment. They use rollers to extrude the raw material into a flat structure of the required thickness. Since silicone raw material has a certain degree of adhesion, the rollers need to be oiled before use to prevent the material from adhering to the rollers.

[0003] Currently, the main methods for meeting the application requirements include the following: 1. Direct manual intervention, manually brushing or smearing; 2. Installing an oil spraying device to apply oil to the pressure roller through atomized oil spraying; 3. Applying oil through direct contact between the oil roller and the pressure roller.

[0004] While the above-mentioned methods can achieve the desired oiling effect, they also have significant drawbacks. For example, the first method, manual intervention, poses certain safety hazards, requiring machine shutdown and impacting overall efficiency. The second method, with its expanded spraying area, results in overlapping coverage areas and uneven distribution at the edges. The third method, which involves directly installing an oil trough on one side of the pressure roller and immersing the roller in it to directly transfer oil to the pressure roller, makes it difficult to control the amount of oil applied, potentially affecting product quality. All of these structures have corresponding problems and defects and therefore require improvement. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to propose a calendering equipment for silicone pad production and its usage method. The equipment has a novel structure and adopts a contact-type oiling method to improve the oiling coverage. It can reposition the parts that transfer the oiling to achieve automatic oil replenishment and squeeze out excess oil, so that the parts being oiled are provided with an appropriate amount of oil, effectively ensuring the overall oiling quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This invention provides a calendering apparatus for producing silicone pads, including a calender body with a first pressure roller and a second pressure roller rotatably mounted on it. The first pressure roller is rotatably mounted on a slide block, and the height of the slide block is adjusted by a screw to adjust the distance between the first and second pressure rollers. It also includes an oiling device installed between two opposing slide blocks, above the first pressure roller. The oiling device includes a bracket, an oil supply structure, and a brush roller structure. The brush roller structure includes a support roller, an oil brushing roller, and an oil scraping roller. The support roller is rotatably mounted on the bracket and is driven to rotate by a first motor. The support roller has an internal oil cavity and a groove on its side wall. The groove and the oil cavity are connected by a cylindrical cavity. The brush roller is installed in the groove, with its side away from the oil cavity protruding from the outside of the groove opening. It can contact the first pressure roller to apply oil. The brush roller is driven to rotate by a second motor. The scraper roller is rotatably located in the cylindrical cavity and is driven to rotate by a third motor to achieve the connection or disconnection between the groove and the oil cavity. The outer wall of the scraper roller is equipped with a scraper. When the scraper is adjusted to the correct position, it can push and scrape the oil off the outer wall of the brush roller. The oil supply structure is used to supply oil to and pump oil from the inside of the oil cavity.

[0008] In a preferred embodiment of the present invention, the support roller includes a first roller body, an oil cavity and a cylindrical cavity extending axially through both ends of the first roller body, and a gap between the two ends of the groove and the two end faces of the first roller body; the top of the cylindrical cavity is connected to the bottom of the groove, and the bottom of the cylindrical cavity is connected to the oil cavity through a strip-shaped opening; a first recessed cavity and a second recessed cavity are respectively provided at both ends of the first roller body for installing a second motor and a third motor; a first end cover and a second end cover are respectively installed at both ends of the first roller body to seal the ends of the oil cavity, the cylindrical cavity, the first recessed cavity, and the second recessed cavity; both the brushing roller and the scraping roller are rotatably installed between the first end cover and the second end cover; the output shaft of the second motor passes through the first end cover and is drivenly connected to the brushing roller; the output shaft of the third motor passes through the second end cover and is drivenly connected to the scraping roller; an oil supply pipe is connected in the middle of the first end cover, and an electro-hydraulic slip ring is installed at the end of the oil supply pipe; the oil supply structure is connected to the oil supply pipe through the electro-hydraulic slip ring; the second motor and the third motor are connected to the outside through the electro-hydraulic slip ring.

[0009] In a preferred embodiment of the present invention, the outer walls of the first end cap and the second end cap are respectively fixed with protrusions, the protrusions extend toward the center of the support roller, and the protrusions are provided with a first through hole; the brushing roller includes a second roller body and a sponge sleeve sleeved on the outer wall of the second roller body, the second roller body is rotatably mounted between the two protrusions through the second support shafts at both ends; the side of the second roller body near the oil cavity is located inside the groove.

[0010] In a preferred embodiment of the present invention, the oil scraping roller includes a third roller body and a scraper fixedly disposed on the outer wall of the third roller body; the length of the third roller body is the same as the length of the first roller body, and a third support shaft at one end of the third roller body near the second end cover passes through the second end cover, and a third motor is connected to the third support shaft for transmission; the length of the scraper is adapted to the length of the groove, the scraper is placed inside the bottom of the groove, and the distance from the end of the scraper to the outer wall of the third roller body is greater than the distance from the sponge sleeve to the outer wall of the third roller body, and less than the distance from the outer wall of the second roller body to the outer wall of the third roller body; the oil scraping roller is provided with an oil channel, and when the sponge sleeve is replenished with oil and the oil scraping roller scrapes oil from the sponge sleeve, the groove and the oil cavity are connected through the oil channel; when the brushing roller applies oil to the outside, the oil channel and the oil cavity are not connected to each other.

[0011] In a preferred embodiment of the present invention, the oil channel includes a first channel, a second channel, and a third channel that are interconnected. The first channel is located on one side opposite to the scraper, and the second and third channels are located on both sides of the scraper. The first, second, and third channels converge at the center of the third roller body to form a Y-shaped structure. The lengths of the first, second, and third channels are adapted to the length of the groove. When the sponge sleeve is replenished with oil, and when the scraper roller scrapes oil from the sponge sleeve, the first channel is connected to the corresponding slot, and the second and / or third channel is connected to the groove. When the brush roller applies oil to the outside, the first channel rotates to the cavity wall of the column cavity and is not connected to the slot.

[0012] In a preferred embodiment of the present invention, the cross-section of the groove is fan-shaped, and the two walls of the groove are inclined surfaces; when the scraper swings to align with the axis of the brushing roller, the second flow channel and the third flow channel correspond to the two walls of the groove respectively.

[0013] In a preferred embodiment of the present invention, the oil supply structure includes an electric push rod, an oil storage tank, a piston, and an oil delivery pipe; one end of the oil delivery pipe is connected to the oil storage tank, and the other end is connected to an oil slip ring; the electric push rod moves the piston to realize the pushing and pulling of the oil.

[0014] The present invention also provides a method of using a calendering device for producing silicone pads, which includes the following steps when replenishing oil to the brushing roller:

[0015] S1, the first motor drives the support roller to rotate to the preset position, so that the groove opening faces upward, and the brushing roller is located at the top position of the support roller;

[0016] S2, the third motor starts, adjusts the position of the oil scraper roller so that the first flow channel corresponds to the position of the strip opening, and connects;

[0017] S3, the electric push rod starts, the push piston moves forward by a preset stroke, and the oil enters the groove through the oil passage to soak the bottom of the brush roller;

[0018] S4, the second motor starts, driving the brush roller to rotate, which allows the sponge sleeve to fully contact the oil, adsorbing and picking up the oil;

[0019] S5, after the brush roller has finished rotating, the electric push rod is started, which drives the piston to move backward by a preset stroke, and the oil flows back into the oil chamber;

[0020] S6, the second motor continues to drive, the scraper is pressed against the sponge sleeve, at this time the scraper will squeeze out the oil absorbed on the sponge sleeve, reducing the amount of oil stored in the sponge sleeve; the squeezed oil flows into the oil cavity through the oil channel.

[0021] S7. After the oil scraping is completed, the third motor starts, which drives the scraper to deviate from the oil brushing roller and aligns the first flow channel with the inner wall of the column cavity, resetting it to the state of cut-off and blockage.

[0022] S8, the first motor starts, driving the entire support roller to rotate to the preset position, so that the oil brush roller contacts the outer wall of the first pressure roller to apply oil.

[0023] The beneficial effects of this invention are as follows:

[0024] This invention provides a calendering device for producing silicone pads and its method of use, including an oiling device installed between two opposing slides and located above a first pressure roller; the oiling device includes an oil supply structure and a brush roller structure;

[0025] The brush roller structure includes a support roller, an oil brushing roller, and an oil scraping roller. The support roller is rotatably mounted on a bracket and is driven to rotate by a first motor. The support roller has an oil cavity inside and a groove on its side wall, with the groove and oil cavity connected by a cylindrical cavity. The oil brushing roller is installed in the groove, with its side away from the oil cavity protruding beyond the groove opening, allowing it to contact and apply oil to the first pressure roller. The oil brushing roller is driven to rotate by a second motor. The oil scraping roller is rotatably located within the cylindrical cavity and is driven to rotate by a third motor, achieving communication between the groove and the oil cavity. The oil supply structure is used to supply and extract oil into the oil cavity. When it is necessary to replenish the oil brush roller, the orientation of the support roller can be rotated to make the oil brush roller face upward. Then, by adjusting the scraper roller, the groove and the oil cavity are connected. Then, the oil supply structure supplies oil into the oil cavity. The oil enters the groove and makes an immersion contact with the bottom of the oil brush roller. The rotation of the oil brush roller can ensure that enough oil is adsorbed on the oil brush roller to improve the subsequent oiling coverage.

[0026] Then, the oil is drawn back through the oil supply structure and flows back into the oil chamber, so the brush roller is no longer immersed in oil. In addition, the outer wall of the brush roller is equipped with a scraper. When the scraper is adjusted to the correct position, it can hold against the outer wall of the brush roller. The second motor drives the brush roller to rotate, squeezing out the excess oil absorbed on the brush roller, reducing the amount of oil stored in the sponge sleeve, so that it can provide a relatively suitable amount of oil for the first pressure roller, effectively ensuring the overall oiling quality. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a calendering device for producing silicone pads provided in a specific embodiment of the present invention;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of the oiling device provided in a specific embodiment of the present invention;

[0029] Figure 3 This is a three-dimensional unfolded structural diagram of the oiling device provided in a specific embodiment of the present invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the brush roller structure provided in a specific embodiment of the present invention;

[0031] Figure 5 This is a three-dimensional unfolded structural diagram of the brush roller structure provided in a specific embodiment of the present invention;

[0032] Figure 6 This is a three-dimensional structural diagram of the first roller body from a first perspective provided in a specific embodiment of the present invention;

[0033] Figure 7 This is a three-dimensional structural diagram of the first roller body from a second perspective provided in a specific embodiment of the present invention;

[0034] Figure 8 This is a cross-sectional view of the oil scraper provided in a specific embodiment of the present invention;

[0035] Figure 9 This is a cross-sectional view of the brush roller structure in a connected state provided in a specific embodiment of the present invention;

[0036] Figure 10 This is a cross-sectional view of the brush roller structure in a truncated state provided in a specific embodiment of the present invention;

[0037] Figure 11 This is a three-dimensional structural diagram of the oil supply structure provided in a specific embodiment of the present invention;

[0038] Figure 12 This is a three-dimensional unfolded structural diagram of the oil supply structure provided in a specific embodiment of the present invention.

[0039] In the picture:

[0040] 100. Calender body; 110. First pressure roller; 200. Oiling device; 210. Support; 220. Oil supply structure; 221. Electric push rod; 222. Oil storage tank; 223. Piston; 224. Oil delivery pipe; 230. Brush roller structure; 300. Support roller; 310. Oil cavity; 320. Groove; 330. Column cavity; 340. First roller body; 341. First recessed cavity; 342. Second recessed cavity; 350. Strip-shaped opening; 36. 0. First end cap; 361. Oil supply pipe; 370. Second end cap; 380. Electro-hydraulic slip ring; 390. Protrusion; 391. First perforation; 400. Oil brush roller; 410. Second roller body; 420. Sponge sleeve; 500. Oil scraper roller; 510. Scraper; 520. Third roller body; 531. First flow channel; 532. Second flow channel; 533. Third flow channel; 610. First motor; 620. Second motor; 630. Third motor. Detailed Implementation

[0041] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] like Figures 1 to 5 As shown in the figure, a specific embodiment of the present invention discloses a calendering device for producing silicone pads, including a calendering machine body 100, on which a first pressure roller 110 and a second pressure roller are rotatably mounted; the first pressure roller is rotatably mounted on a slide block, and the height of the slide block is adjusted by a screw to adjust the distance between the first pressure roller and the second pressure roller; it includes an oiling device 200, which is installed between two opposing slide blocks and located above the first pressure roller 110; the oiling device 200 includes a bracket 210, an oil supply structure 220, and a brush roller structure 230; the brush roller structure 230 includes a support The system includes a roller 300, an oil brushing roller 400, and an oil scraping roller 500. A support roller 300 is rotatably mounted on a bracket 210 and is driven to rotate by a first motor 610. The support roller 300 has an oil cavity 310 inside and a groove 320 on its side wall, which is connected to the oil cavity 310 via a cylindrical cavity 330. The oil brushing roller 400 is installed in the groove 320, with its side away from the oil cavity 310 protruding outside the groove opening, allowing it to contact and apply oil to the first pressure roller 110. The oil brushing roller 400 is driven to rotate by a second motor 620. Figure 9 , Figure 10As shown, the oil scraper roller 500 is rotatably mounted inside the column cavity 330. The oil scraper roller 500 is driven to rotate by the third motor 630 to realize the connection or cut-off between the groove and the oil cavity. The outer wall of the oil scraper roller 500 is provided with a scraper 510. The scraper 510, when adjusted to the correct position, can push and scrape the oil off the outer wall of the brush roller 400. The oil supply structure 220 is used to supply oil and extract oil into the oil cavity 310. The electrical components of the oil supply structure and the brush roller structure are all connected to the electrical control box of the calender body for unified and coordinated operation.

[0043] The aforementioned calendering equipment for producing silicone pads includes an oiling device, which is installed between two opposing slides and located above the first pressure roller; the oiling device includes an oil supply structure and a brush roller structure.

[0044] The brush roller structure includes a support roller, an oil brushing roller, and an oil scraping roller. The support roller is rotatably mounted on a bracket and is driven to rotate by a first motor. The support roller has an oil cavity inside and a groove on its side wall, with the groove and oil cavity connected by a cylindrical cavity. The oil brushing roller is installed in the groove, with its side away from the oil cavity protruding beyond the groove opening, allowing it to contact and apply oil to the first pressure roller. The oil brushing roller is driven to rotate by a second motor. The oil scraping roller is rotatably located within the cylindrical cavity and is driven to rotate by a third motor, achieving communication between the groove and the oil cavity. The oil supply structure is used to supply and extract oil into the oil cavity. When it is necessary to replenish the oil brush roller, the orientation of the support roller can be rotated to make the oil brush roller face upward. Then, by adjusting the scraper roller, the groove and the oil cavity are connected. Then, the oil supply structure supplies oil into the oil cavity. The oil enters the groove and makes an immersion contact with the bottom of the oil brush roller. The rotation of the oil brush roller can ensure that enough oil is adsorbed on the oil brush roller to improve the subsequent oiling coverage.

[0045] Then, the oil is drawn back through the oil supply structure and flows back into the oil chamber, so the brush roller is no longer immersed in the oil. In addition, the outer wall of the brush roller is equipped with a scraper. When the scraper is adjusted to the correct position, it can hold against the outer wall of the brush roller. The second motor drives the brush roller to rotate, squeezing out the excess oil absorbed on the brush roller, reducing the amount of oil stored in the sponge sleeve, so that it can provide a relatively suitable amount of oil for the first pressure roller, effectively ensuring the overall oiling quality.

[0046] It should be noted that calenders are common processing and molding equipment in the production of silicone and plastics, and can be purchased and used on the market. Their specific structure will not be described in detail.

[0047] Furthermore, such as Figures 4 to 7As shown, the support roller 300 includes a first roller body 340, an oil cavity 310 and a cylindrical cavity 330 extending axially through both ends of the first roller body 340, and a gap between the two ends of the groove 320 and the two end faces of the first roller body 340; the top of the cylindrical cavity 330 is connected to the bottom of the groove 320, and the bottom of the cylindrical cavity 330 is connected to the oil cavity 310 through a strip-shaped opening 350; the two ends of the first roller body 340 are respectively provided with a first recessed cavity 341 and a second recessed cavity 342 for installing a second motor 620 and a third motor 630; the two ends of the first roller body 340 are respectively provided with a first end cap 360 and a second end cap 370 to seal the ends of the oil cavity, the cylindrical cavity, the first recessed cavity, and the second recessed cavity; Both the brushing roller and the scraping roller are rotatably mounted between the first end cover and the second end cover. The output shaft of the second motor passes through the first end cover and is connected to the brushing roller for transmission. The output shaft of the third motor passes through the second end cover and is connected to the scraping roller for transmission. An oil supply pipe 361 is connected to the middle of the first end cover 360. An electro-hydraulic slip ring 380 is installed at the end of the oil supply pipe 361. The oil supply structure is connected to the oil supply pipe through the electro-hydraulic slip ring. The second and third motors are connected to external power through the electro-hydraulic slip ring. The whole structure adopts an assembly structure, which can facilitate the processing, production and assembly of each structural component. Especially the first end cover and the second end cover... The two end caps have a detachable structure, which facilitates the installation of the brushing roller and the scraping roller. The bottom of both the first and second recessed chambers has wire holes, and the inner walls of the first and second end caps have corresponding wire grooves. The wiring for the second and third motors is routed through the wire holes and grooves, and the wiring is also connected to the electro-hydraulic slip ring, achieving simultaneous rotation and power supply without interference. The electro-hydraulic slip ring can also be used as a rotating oil supply component, enabling oil delivery without affecting the rotation of the support roller. It should be noted that the electro-hydraulic slip ring can be purchased directly from the market; its specific structure will not be elaborated upon.

[0048] Furthermore, the bracket has symmetrical first upright plates on both sides of its bottom, and the support roller is mounted between the two first upright plates via bearings; the outer wall of the second end cover is fixed with a first support shaft, which is connected to the output shaft of the first motor via a synchronous belt pulley assembly. The first motor is mounted on the bracket and drives the support roller to rotate, so that the brushing roller is positioned at the top of the support roller for oil replenishment; alternatively, the brushing roller can be positioned at the bottom of the support roller to contact the first pressure roller for oil application.

[0049] Furthermore, the outer walls of the first end cap 360 and the second end cap 370 are respectively provided with protrusions 390, which extend towards the center of the support roller. The protrusions 390 are provided with first through holes 391. The brushing roller 400 includes a second roller body 410 and a sponge sleeve 420 sleeved on the outer wall of the second roller body 410. The second roller body 420 is rotatably mounted between the two protrusions 390 through the second support shafts at both ends. The side of the second roller body 420 near the oil cavity 310 is located inside the groove 320. Both the first end cap and the second end cap are detachable structures, which facilitates the disassembly and replacement of the brushing roller. Moreover, the brushing roller is partially immersed in the groove. When oil is added, it can be effectively soaked and absorbed. When oil is squeezed out, the groove can receive and guide the squeezed-out oil, so that the oil flows back into the oil cavity.

[0050] Furthermore, the output shaft of the second motor is connected to the adjacent second support shaft via a synchronous belt pulley assembly; the length of the second roller body is adapted to the length of the groove, and the two ends of the second roller body slide against the end face of the groove, so that the brush roller is immersed and installed in the groove, and can make full contact with the oil; and the second motor drives the brush roller to rotate, which can contact the scraper to squeeze out the excess oil, so that the sponge sleeve contains an appropriate amount of oil.

[0051] Furthermore, such as Figure 8 As shown, the oil scraper roller 500 includes a third roller body 520 and a scraper 510 fixedly disposed on the outer wall of the third roller body 520. The length of the third roller body is the same as the length of the first roller body. A third support shaft at one end of the third roller body near the second end cover passes through the second end cover, and a third motor is connected to the third support shaft for transmission. The length of the scraper 510 is adapted to the length of the groove 320. The scraper 510 is placed inside the bottom of the groove 320. The distance from the end of the scraper to the outer wall of the third roller body is greater than the distance from the sponge sleeve to the outer wall of the third roller body, and less than the distance from the outer wall of the second roller body to the outer wall of the third roller body. Spacing; a third support shaft is provided at the other end of the third roller body, and the end of the third roller body is movably abutted against the inner wall of the first end cover; when the oil scraper roller is installed, due to the scraper and the structure of the groove, the other end face is a flat structure to shorten the overall length; in actual installation, the third support shaft can be first inserted from the port of the column cavity outwards, and after adjustment, it can be installed into the column cavity; in addition, the scraper can also adopt a detachable structure. After the third roller body is installed, the scraper can be installed on the third roller body to achieve the overall assembly and fit effect;

[0052] The oil scraper roller is equipped with oil channels. When the sponge sleeve is replenished with oil and the oil scraper roller scrapes oil off the sponge sleeve, the groove and the oil cavity are connected through the oil channels. When the brush roller applies oil to the outside, the oil channels and the oil cavity are not connected. By rotating and adjusting the position of the oil scraper roller, the position of the oil channels and the column cavity can be changed, thereby realizing the adjustment of conduction and cutoff.

[0053] Furthermore, the side of the scraper away from the third roller has an outwardly convex arc shape to prevent the edges and corners from scratching the sponge sleeve.

[0054] Furthermore, such as Figures 8 to 10 As shown, the oil passage includes a first flow channel 531, a second flow channel 532, and a third flow channel 533 that are interconnected. The first flow channel 531 is located on one side of the scraper 510, and the second and third flow channels 532 are located on both sides of the scraper 510. The first, second, and third flow channels 531, 532, and 533 converge at the center of the third roller body 520, forming a Y-shaped structure. The lengths of the first, second, and third flow channels 531, 532, and 533 are related to the groove 3. The length is 20mm; when the sponge sleeve is replenished with oil, and the scraper roller scrapes oil from the sponge sleeve, the first flow channel is connected to the corresponding slot, and the second and / or third flow channel is connected to the groove; when the brush roller applies oil to the outside, the first flow channel rotates to the cavity wall of the column cavity and is not connected to the slot; more specifically, when replenishing oil to the brush roller, the first motor drives the support roller to rotate to a preset position, so that the groove opening faces upward; then the third motor is started to adjust the position of the scraper roller, so that the first flow... The channel aligns with the slotted opening and is connected. Then, the oil supply structure is activated, supplying oil into the oil chamber. The oil enters the groove through the oil channel, soaking the bottom of the brush roller. Next, the second motor starts, rotating the brush roller to ensure the sponge sleeve fully contacts and absorbs the oil. After the brush roller completes its rotation, the oil supply structure is activated and moves in the opposite direction, returning the oil in the groove to the oil chamber. The second motor continues to drive, with the scraper pressed against the sponge sleeve. The scraper then squeezes out the oil absorbed by the sponge sleeve, reducing the amount of oil stored within it. The squeezed-out oil flows through the oil channel into the oil chamber. After scraping, the third motor starts, moving the scraper away from the brush roller and aligning the first flow channel with the inner wall of the column cavity, resetting to a blocked state. Finally, the first motor starts, rotating the entire support roller to a preset position, allowing the brush roller to contact the outer wall of the first pressure roller for oil application. The scraper is in a blocked position, preventing oil seepage and dripping.

[0055] Furthermore, the cross-section of the groove 320 is fan-shaped, and the two walls of the groove are inclined slopes. When the scraper 510 swings to align with the axis of the brush roller 400, the second flow channel 532 and the third flow channel 533 correspond to the two walls of the groove 320 respectively. The oil flows into the second flow channel and the third flow channel along the inclined slope, accelerating the return of the oil to the inside of the oil cavity. In addition, it ensures that the oil will not stagnate inside the groove, preventing the oil from dripping when the groove rotates to the point where the groove opening faces downward.

[0056] Furthermore, such as Figure 11 , Figure 12As shown, the oil supply structure 220 includes an electric push rod 221, an oil storage tank 222, a piston 223, and an oil delivery pipe 224. One end of the oil delivery pipe 224 is connected to the oil storage tank 222, and the other end is connected to the oil slip ring 380. The electric push rod 221 moves the piston 223 to push and pull the oil. The oil storage tank includes a tank body open at both ends, with a first tank cover and a second tank cover sealed at both ends. The first tank cover has a discharge port in the middle, and one end of the oil delivery pipe is connected to the discharge port. The outer side; the middle of the second end cap is provided with a guide hole, and a sealed linear bearing is installed on the outer side of the guide hole; the piston includes a plug and a push rod, the outer wall of the plug slides against the inner wall of the tank, the push rod passes through the sealed linear bearing, and the end of the push rod is connected and fixed to the end of the piston rod of the electric push rod through a mating part, and the piston moves back and forth through the electric push rod; the outer wall of the tank is provided with a feeding port, and a cover is installed on the outer side of the feeding port, through which lubricating oil can be added or replaced, which is convenient for use.

[0057] Furthermore, level sensors can be installed inside the tank, inside the oil chamber, and on the inner wall of the groove to detect the remaining oil level, facilitating timely replenishment. They can also provide timely feedback on the amount of oil entering the groove to prevent overflow. Of course, the approximate remaining level can be calculated by the number of times oil is replenished, allowing for timely reminders and replenishment.

[0058] The present invention also provides a method of using a calendering device for producing silicone pads, which includes the following steps when replenishing oil to the brushing roller:

[0059] S1, the first motor drives the support roller to rotate to the preset position, so that the groove opening faces upward, and the brushing roller is located at the top position of the support roller;

[0060] S2, the third motor starts, adjusts the position of the oil scraper roller so that the first flow channel corresponds to the position of the strip opening, and connects;

[0061] S3, the electric push rod starts, the push piston moves forward by a preset stroke, and the oil enters the groove through the oil passage to soak the bottom of the brush roller;

[0062] S4, the second motor starts, driving the brush roller to rotate, which allows the sponge sleeve to fully contact the oil, adsorbing and picking up the oil;

[0063] S5, after the brush roller has finished rotating, the electric push rod is started, which drives the piston to move backward by a preset stroke, and the oil flows back into the oil chamber;

[0064] S6, the second motor continues to drive, the scraper is pressed against the sponge sleeve, at this time the scraper will squeeze out the oil absorbed on the sponge sleeve, reducing the amount of oil stored in the sponge sleeve; the squeezed oil flows into the oil cavity through the oil channel.

[0065] S7. After the oil scraping is completed, the third motor starts, which drives the scraper to deviate from the oil brushing roller and aligns the first flow channel with the inner wall of the column cavity, resetting it to the state of cut-off and blockage.

[0066] S8, the first motor starts, driving the entire support roller to rotate to the preset position, so that the oil brush roller contacts the outer wall of the first pressure roller to apply oil.

[0067] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A calendering apparatus for producing silicone pads, comprising a calender body, on which a first pressure roller and a second pressure roller are rotatably mounted; the first pressure roller is rotatably mounted on a slide block, and the height of the slide block is adjusted by a screw to adjust the distance between the first pressure roller and the second pressure roller; characterized in that: It includes an oiling device, which is installed between two opposing slides and above the first pressure roller; The oiling device includes a bracket, an oil supply structure, and a brush roller structure; The brush roller structure includes a support roller, an oil brushing roller, and an oil scraping roller; The support roller is rotatably mounted on the bracket and is driven to rotate by the first motor. The support roller has an oil cavity inside and a groove on its side wall. The groove and the oil cavity are connected by a cylindrical cavity. The brush roller is installed in the groove. The side of the brush roller away from the oil cavity protrudes out of the groove opening and is used to apply oil to the first pressure roller. The brush roller is driven to rotate by the second motor. The oil scraper roller is rotatably mounted inside the cylindrical cavity. The oil scraper roller is equipped with oil channels, including a first channel, a second channel, and a third channel that are interconnected. The first channel is located on one side opposite the scraper, and the second and third channels are located on both sides of the scraper. The first, second, and third channels converge at the center of the third roller body to form a Y-shaped structure. The oil scraper roller is driven to rotate by a third motor, which changes the placement of the first channel to achieve the connection or disconnection between the groove and the oil cavity. The outer wall of the oil scraping roller is equipped with a scraper. When the scraper swings to be aligned with the axis of the oil brushing roller, it is used to scrape the oil off the outer wall of the oil brushing roller. The oil supply structure is used to supply oil to and pump oil from the inside of the oil chamber.

2. The calendering equipment for producing silicone pads according to claim 1, characterized in that: The support roller includes a first roller body, an oil cavity and a cylindrical cavity that extend axially through both ends of the first roller body, and a gap between the two ends of the groove and the two end faces of the first roller body; the top of the cylindrical cavity is connected to the bottom of the groove, and the bottom of the cylindrical cavity is connected to the oil cavity through a strip-shaped opening; The first roller body has a first recessed cavity and a second recessed cavity at its two ends, which are used to install the second motor and the third motor; The first roller body is equipped with a first end cap and a second end cap at both ends to seal the ends of the oil cavity, the column cavity, the first sink cavity, and the second sink cavity; The oil scraper roller is rotatably installed between the first end cover and the second end cover. The output shaft of the second motor passes through the first end cover and is connected to the oil brush roller. The output shaft of the third motor passes through the second end cover and is connected to the oil scraper roller. The middle part of the first end cap is connected to an oil supply pipe, and an electro-hydraulic slip ring is installed at the end of the oil supply pipe. The oil supply structure is connected to the oil supply pipe through the electro-hydraulic slip ring. The second motor and the third motor are connected to the outside through the electro-hydraulic slip ring.

3. The calendering equipment for producing silicone pads according to claim 2, characterized in that: The outer walls of the first end cap and the second end cap are respectively fixed with protrusions, which extend toward the center of the support roller, and the protrusions are provided with a first through hole. The brushing roller includes a second roller body and a sponge sleeve fitted on the outer wall of the second roller body. The second roller body is rotatably mounted between two protrusions via second support shafts at both ends. The side of the second roller closest to the oil cavity is located inside the groove.

4. The calendering equipment for producing silicone pads according to claim 3, characterized in that: The oil scraper includes a third roller body and a scraper fixedly disposed on the outer wall of the third roller body; The length of the third roller is the same as that of the first roller. The third support shaft of the third roller near the second end cover passes through the second end cover. The third motor is connected to the third support shaft for transmission. The length of the scraper is matched with the length of the groove. The scraper is placed inside the bottom of the groove. The distance from the end of the scraper to the outer wall of the third roller is greater than the distance from the sponge sleeve to the outer wall of the third roller, and less than the distance from the outer wall of the second roller to the outer wall of the third roller. When the sponge sleeve is replenished with oil, or when the oil scraper roller scrapes oil off the sponge sleeve, the groove and the oil cavity are connected by oil channels. When the brush roller applies oil to the outside, the oil channel and the oil cavity are not connected.

5. A calendering apparatus for producing silicone pads according to claim 4, characterized in that: The lengths of the first flow channel, the second flow channel, and the third flow channel are matched with the length of the groove; When the sponge sleeve is replenished with oil, or when the oil scraper roller scrapes oil off the sponge sleeve, the first flow channel is connected to the corresponding strip opening, and the second flow channel and / or the third flow channel is connected to the groove. When the brush roller applies oil to the outside, the first flow channel rotates to the cavity wall of the column cavity and is not connected to the strip opening.

6. The calendering equipment for producing silicone pads according to claim 5, characterized in that: The groove has a fan-shaped cross-section, and the two walls of the groove are inclined surfaces. When the scraper swings to align with the axis of the brush roller, the second and third flow channels correspond to the two walls of the groove, respectively.

7. A calendering apparatus for producing silicone pads according to claim 6, characterized in that: The oil supply structure includes an electric push rod, an oil storage tank, a piston, and an oil delivery pipe; One end of the oil pipeline is connected to the oil storage tank, and the other end is connected to the electro-hydraulic slip ring; the electric push rod moves the piston to push and pull the oil.

8. A method of using the calendering equipment for producing silicone pads as described in claim 7, characterized in that: When replenishing oil to the brush roller, the following steps are included: S1, the first motor drives the support roller to rotate to the preset position, so that the groove opening faces upward, and the brushing roller is located at the top position of the support roller; S2, the third motor starts, adjusts the position of the oil scraper roller so that the first flow channel corresponds to the position of the strip opening, and connects; S3, the electric push rod starts, the push piston moves forward by a preset stroke, and the oil enters the groove through the oil passage to soak the bottom of the brush roller; S4, the second motor starts, driving the brush roller to rotate, which allows the sponge sleeve to fully contact the oil, adsorbing and picking up the oil; S5, after the brush roller has finished rotating, the electric push rod is started, which drives the piston to move backward by a preset stroke, and the oil flows back into the oil chamber; S6, the second motor continues to drive, the scraper is pressed against the sponge sleeve, at this time the scraper will squeeze out the oil absorbed on the sponge sleeve, reducing the amount of oil stored in the sponge sleeve; the squeezed oil flows into the oil cavity through the oil channel. S7. After the oil scraping is completed, the third motor starts, which drives the scraper to deviate from the oil brushing roller and aligns the first flow channel with the inner wall of the column cavity, resetting it to the state of cut-off and blockage. S8, the first motor starts, driving the entire support roller to rotate to the preset position, so that the oil brush roller contacts the outer wall of the first pressure roller to apply oil.

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