An MLCC high-speed precision thin-film casting machine

Abstract

The present invention relates to the technical field of fully automatic film casting machines, and specifically relates to an MLCC high-speed precision film casting machine, which includes a pushing plate and a coating roller; the pushing plate is hydraulically driven, and on one side of the pushing plate, there is a supply measurement unit that provides hydraulic driving force for the pushing plate. The supply measurement unit includes a storage tank and a first pressure sensor. The storage tank stores hydraulic oil, and the storage tank supplies oil to the pushing plate. The first pressure sensor is arranged at the bottom of the storage tank. The horizontal cross-sectional area of the storage tank is constant. The first pressure sensor is used to monitor the mass change of the hydraulic oil in the storage tank when the pushing plate moves. A processor is also arranged on the storage tank. The processor calculates the height change of the hydraulic oil based on the mass change and the horizontal cross-sectional area of the storage tank. The height change is the same as the total movement change of the two pushing plates. The present invention reduces the use cost and ensures the accuracy of the substrate thickness.

Description

Technical Field

[0001] The present invention relates to the technical field of fully automatic film casting machines, and specifically relates to an MLCC high-speed precision film casting machine. Background Art

[0002] Multi-layer ceramic capacitors (MLCCs), also known as chip capacitors, have increasingly stringent requirements for the thickness of MLCC thin films in the prior art. However, existing MLCC film casting machines are difficult to precisely control the thickness of MLCC films.

[0003] Chinese Patent CN114905683B discloses an MLCC high-speed precision fully automatic film casting machine for coating slurry on the surface of a substrate, including a material guiding device, and a feeding device, a coating device, a drying device, and an aggregating device sequentially arranged along the advancing direction of the substrate; the material guiding device is respectively arranged between the feeding device and the coating device, between the coating device and the drying device, and between the drying device and the aggregating device; the feeding device is used for placing a to-be-processed material roll and releasing the to-be-processed substrate in the to-be-processed material roll; the coating device includes a coating bracket, a thickness adjusting mechanism, and a coating die head. The thickness adjusting mechanism includes a gap adjusting driving member installed on the coating bracket and two coating rollers rotatably installed on the coating bracket and arranged in parallel. The gap adjusting driving member is connected to the coating rollers to adjust the gap between the two coating rollers. The coating die head is installed on the coating bracket and is used for coating slurry on the substrate conveyed by the coating rollers; the drying device is used for drying the substrate coated with slurry; the aggregating device is used for winding the dried substrate into a finished material roll.

[0004] The above solution controls the substrate thickness by adjusting the gap between the two coating rollers. However, controlling the thickness only by adjusting the distance between the two coating rollers has limitations. The existing adjusting device has limited precision during adjustment, and errors are likely to occur due to mechanical wear after long-term use. Therefore, when adjusting the coating rollers through the adjusting device, there is likely to be an error between the actual thickness and the preset thickness between the two coating rollers, and the precision cannot be guaranteed after long-term use. Summary of the Invention

[0005] To solve the above problems, an MLCC high-speed precision thin-film casting machine is provided. Before use, two coating rollers approach and contact each other, and the distance between the coating rollers is zero at this time. A hydraulic chamber is sleeved outside the push plate, and the push plate can slide in the hydraulic chamber. Subsequently, the storage tank supplies hydraulic oil to the two hydraulic chambers. Under the action of the hydraulic oil, the two push plates drive the two coating rollers to separate respectively. Since the hydraulic oil in the storage tank needs to be equally supplied to the two hydraulic chambers, and the horizontal cross-sectional areas of the two hydraulic chambers are the same as the horizontal cross-sectional area of the storage tank, the total movement amount of the two push plates is the same as the height change amount of the hydraulic oil in the storage tank. The distance between the two coating rollers is controlled by the hydraulic oil, avoiding the traditional adjustment device from controlling the movement of the coating rollers mechanically. A first pressure sensor is provided at the bottom of the storage tank, and the height change amount of the hydraulic oil in the storage tank is calculated by inferring from the mass change amount of the hydraulic oil detected by the first pressure sensor, without the need to set an additional rangefinder to monitor the moving coating rollers, reducing the use cost and ensuring accuracy at the same time. Moreover, the hydraulic method is used to drive the movement of the coating rollers, and after reaching the specified position, it is locked by hydraulic pressure, avoiding mechanical wear during traditional mechanical transmission, having high precision, and enabling the thin-film casting machine to adapt to the processing of substrates with a relatively thin thickness.

[0006] To solve the problems of the prior art, the present invention provides an MLCC high-speed precision thin-film casting machine, which includes two vertically arranged push plates and coating rollers arranged on the two push plates; the two push plates can drive the two coating rollers to approach or move away from each other, the push plates are driven by hydraulic pressure, and a supply measurement unit for providing hydraulic driving force for the push plates is arranged on one side of the push plates. The supply measurement unit includes a storage tank and a first pressure sensor. Hydraulic oil is stored in the storage tank, the storage tank supplies oil to the push plates, the first pressure sensor is arranged at the bottom of the storage tank, the horizontal cross-sectional area of the storage tank is constant, the first pressure sensor is used to monitor the mass change amount of the hydraulic oil in the storage tank when the push plates move, and a processor is also arranged on the storage tank. The processor calculates the height change amount of the hydraulic oil according to the mass change amount and the horizontal cross-sectional area of the storage tank, and the height change amount is the same as the total movement change amount of the two push plates.

[0007] Preferably, the change volume of the hydraulic oil is calculated by the density of the hydraulic oil and the mass change amount of the hydraulic oil in the storage tank, and the height change amount of the hydraulic oil in the storage tank is calculated by dividing the change volume by the horizontal cross-sectional area of the storage tank.

[0008] Preferably, a second pressure sensor is arranged on the circumferential wall of the coating roller. Before use, the two push plates drive the two coating rollers to approach each other respectively. When the two coating rollers contact, the second pressure sensor monitors the pressure value, and the push plates stop moving.

[0009] Preferably, when the two pushing plates drive the two coating rollers away from each other respectively, the hydraulic oil in the storage tank is discharged, and when the two pushing plates drive the two coating rollers closer to each other respectively, the hydraulic oil flows back into the storage tank.

[0010] Preferably, the supply measurement unit includes two vertically arranged hydraulic chambers and a first connecting pipe connecting the two hydraulic chambers. A second connecting pipe is connected to the first connecting pipe, and the end of the second connecting pipe far from the first connecting pipe communicates with the storage tank. The pushing plate is arranged to move vertically in the hydraulic chamber, and the pushing plate and the hydraulic chamber on the side where it is close to the first connecting pipe form a hydraulic cavity, and the first connecting pipe communicates with the hydraulic cavity.

[0011] Preferably, a synchronization unit is arranged between the two pushing plates. The synchronization unit includes two winding rollers, the ends of the two winding rollers are fixedly connected, the two winding rollers rotate synchronously when rotating, a synchronization rope is wound on the winding rollers, and the synchronization ropes on the two winding rollers are respectively fixedly connected to the two vertically arranged pushing plates.

[0012] Preferably, a winding unit capable of driving the winding roller to rotate is arranged at the end of the winding roller. When the winding unit drives the winding roller to rotate, the winding roller can wind the synchronization rope. At this time, the two pushing plates approach each other. When the winding unit drives the winding roller to rotate, the rotation direction of the winding roller is opposite to the rotation direction of the winding roller when the two coating rollers are separated from each other, and the winding unit starts when the two coating rollers approach each other.

[0013] Preferably, a clamping disk is fixedly arranged at the end of the winding roller. Clamping grooves are evenly formed on the peripheral wall of the clamping disk around the axis of the clamping disk. The winding unit includes a rotating ring rotating around the axis of the clamping disk. Elastic pieces are evenly arranged on the inner ring of the rotating ring around the axis of the rotating ring. The elastic pieces are in clamping fit with the clamping grooves. When the two pushing plates move away from each other, the elastic pieces retract into the rotating ring. Before the two pushing plates approach each other, the elastic pieces pop out of the rotating ring and are clamped with the clamping grooves on the clamping disk.

[0014] Preferably, a third connecting pipe connecting the two hydraulic chambers is vertically arranged on one side of the first connecting pipe. A fourth connecting pipe is arranged on the third connecting pipe and communicates with the third connecting pipe. A driving unit for driving the rotating ring to rotate is arranged on the fourth connecting pipe. When the two pushing plates approach each other, the oil in the hydraulic chamber is discharged into the fourth connecting pipe through the third connecting pipe, and the flowing oil in the fourth connecting pipe can drive the driving unit.

[0015] Preferably, an elastic sleeve is arranged on the upper part of the storage tank. The elastic sleeve communicates with the storage tank. When the hydraulic oil in the storage tank is discharged, the elastic sleeve shrinks, and when the hydraulic oil in the storage tank increases, the elastic sleeve expands.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] Before the present invention is used, two coating rollers approach and contact each other. At this time, the distance between the coating rollers is zero. A hydraulic chamber is sleeved outside the pushing plate, and the pushing plate can slide in the hydraulic chamber. Subsequently, the storage tank supplies hydraulic oil to the two hydraulic chambers. Under the action of the hydraulic oil, the two pushing plates drive the two coating rollers to separate respectively. Since the hydraulic oil in the storage tank needs to be supplied to the two hydraulic chambers in equal parts, and the horizontal cross-sectional areas of the two hydraulic chambers are the same as the horizontal cross-sectional area of the storage tank, the total movement amount of the two pushing plates is the same as the height change amount of the hydraulic oil in the storage tank. The distance between the two coating rollers is controlled by hydraulic oil, avoiding the traditional adjustment device from controlling the movement of the coating rollers mechanically. A first pressure sensor is arranged at the bottom of the storage tank, and the height change amount of the hydraulic oil in the storage tank is deduced from the mass change amount of the hydraulic oil detected by the first pressure sensor. There is no need to set an additional rangefinder to monitor the moving coating rollers, reducing the use cost and ensuring accuracy at the same time. Moreover, the coating rollers are driven to move by a hydraulic method and are locked hydraulically after reaching the specified position, avoiding mechanical wear during traditional mechanical transmission, having high precision, and enabling the film casting machine to adapt to the processing of substrates with relatively thin thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of an MLCC high-speed precision film casting machine Figure 1 .

[0019] Figure 2 is a side view of an MLCC high-speed precision film casting machine.

[0020] Figure 3 is an MLCC high-speed precision film casting machine Figure 2 sectional schematic view taken along line A-A in

[0021] Figure 4 is an MLCC high-speed precision film casting machine Figure 3 partial enlarged schematic view at B in

[0022] Figure 5 is an MLCC high-speed precision film casting machine Figure 3 partial enlarged schematic view at C in

[0023] Figure 6 is a cutaway three-dimensional schematic diagram of an MLCC high-speed precision film casting machine.

[0024] Figure 7 is an MLCC high-speed precision film casting machine Figure 6 partial enlarged schematic view at D in

[0025] Figure 8 is a three-dimensional schematic diagram of an MLCC high-speed precision film casting machineFigure 2 。

[0026] Figure 9 is a three-dimensional schematic diagram of an MLCC high-speed precision thin-film casting machine Figure 3 。

[0027] Figure 10 is a three-dimensional schematic diagram of an MLCC high-speed precision thin-film casting machine after removing the coating roller and part of the push plate

[0028] The reference numerals in the figure are as follows:

[0029] 1. Push plate; 2. Coating roller; 3. Substrate; 4. Supply measurement unit; 41. Storage tank; 411. Elastic sleeve; 42. Hydraulic chamber; 43. First connecting pipe; 44. Second connecting pipe; 441. Pump body; 45. Synchronization unit; 451. Synchronization rope; 452. Take-up roller; 453. Take-up unit; 4531. Rotating ring; 4532. Elastic piece; 4533. Clamping disc; 4534. Annular side plate; 4535. Hydraulic pump; 454. Driving unit; 4541. Turbine pump; 4542. Synchronization wheel; 4543. Synchronization ring; 4544. Synchronization belt; 455. Third connecting pipe; 456. Fourth connecting pipe Specific embodiments

[0030] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments

[0031] Refer to Figure 1 and Figure 2 : An MLCC high-speed precision thin-film casting machine includes two vertically arranged push plates 1 and a coating roller 2 arranged on the two push plates 1; the two push plates 1 can drive the two coating rollers 2 to approach or move away from each other, the push plates 1 are hydraulically driven, and on one side of the push plates 1, a supply measurement unit 4 for providing hydraulic driving force for the push plates 1 is arranged. The supply measurement unit 4 includes a storage tank 41 and a first pressure sensor. Hydraulic oil is stored in the storage tank 41, the storage tank 41 supplies oil to the push plates 1, the first pressure sensor is arranged at the bottom of the storage tank 41, the horizontal cross-sectional area of the storage tank 41 is constant, the first pressure sensor is used to monitor the mass change of the hydraulic oil in the storage tank 41 when the push plates 1 move, and a processor is further arranged on the storage tank 41. The processor calculates the height change of the hydraulic oil according to the mass change and the horizontal cross-sectional area of the storage tank 41, and the height change is the same as the total movement change of the two push plates 1

[0032] The two coating rollers 2 are mainly used to limit the thickness of the substrate 3. The substrate 3 passes through between the two coating rollers 2. By controlling the distance between the two coating rollers 2, the thickness of the substrate 3 is controlled. The working principle is as follows. Before use, the two coating rollers 2 approach and contact each other, and at this time, the distance between the coating rollers 2 is zero. A hydraulic chamber 42 is sleeved outside the pushing plate 1, and the pushing plate 1 can slide in the hydraulic chamber 42. Subsequently, the storage tank 41 supplies hydraulic oil to the two hydraulic chambers 42. Under the action of the hydraulic oil, the two pushing plates 1 drive the two coating rollers 2 to separate respectively. Since the hydraulic oil in the storage tank 41 needs to be equally supplied to the two hydraulic chambers 42, and the horizontal cross-sectional areas of the two hydraulic chambers 42 are the same as the horizontal cross-sectional area of the storage tank 41, the total movement amount of the two pushing plates 1 is the same as the height change amount of the hydraulic oil in the storage tank 41. Controlling the distance between the two coating rollers 2 through hydraulic oil avoids the traditional regulating device from controlling the movement of the coating rollers 2 mechanically. A first pressure sensor is arranged at the bottom of the storage tank 41, and the height change amount of the hydraulic oil in the storage tank 41 is calculated by inferring from the mass change amount of the hydraulic oil detected by the first pressure sensor. There is no need to set an additional rangefinder to monitor the moving coating rollers 2, which reduces the use cost and also ensures the accuracy. Moreover, the hydraulic method is used to drive the movement of the coating rollers 2, and after reaching the specified position, it is locked by hydraulic pressure, avoiding mechanical wear during traditional mechanical transmission, with high precision, enabling the film casting machine to adapt to the processing of substrates 3 with relatively thin thicknesses.

[0033] Refer to Figures 1 - 10 : Calculate the changed volume of the hydraulic oil by the density of the hydraulic oil and the mass change amount of the hydraulic oil in the storage tank 41, and calculate the height change amount of the hydraulic oil in the storage tank 41 by dividing the changed volume by the horizontal cross-sectional area of the storage tank 41.

[0034] Since the density of the hydraulic oil remains constant, according to the density formula, when the mass change amount is known, the volume can be inferred, and then the height change amount of the hydraulic oil in the storage tank 41 can be inferred.

[0035] Refer to Figures 1 - 10 : A second pressure sensor is arranged on the peripheral wall of the coating roller 2. Before use, the two pushing plates 1 drive the two coating rollers 2 to approach each other respectively. When the two coating rollers 2 contact, the second pressure sensor monitors the pressure value, and the pushing plate 1 stops moving.

[0036] Before placing the substrate 3 between the two coating rollers 2, it is necessary to zero-correct the distance between the two coating rollers 2. By driving the two coating rollers 2 to approach each other respectively through the two pushing plates 1 until they come into contact, the distance between the two coating rollers 2 is reduced to zero, and the movement stops after the second pressure sensor monitors the pressure value. Subsequently, the two pushing plates 1 start to separate synchronously. The total movement amount of the two pushing plates 1 is the same as the height change amount in the storage tank 41. In this way, after zeroing the distance between the two coating rollers 2, the accuracy of adjusting the distance between the two coating rollers 2 subsequently can be ensured.

[0037] Refer to Figures 1 - 10 : When the two pushing plates 1 drive the two coating rollers 2 to move away from each other respectively, the hydraulic oil in the storage tank 41 is discharged. When the two pushing plates 1 drive the two coating rollers 2 to approach each other respectively, the hydraulic oil flows back to the storage tank 41.

[0038] Refer to Figure 1 、 Figure 8 and Figure 9 : The supply measurement unit 4 includes two vertically arranged hydraulic chambers 42 and a first connecting pipe 43 connecting the two hydraulic chambers 42. A second connecting pipe 44 is connected to the first connecting pipe 43. The end of the second connecting pipe 44 away from the first connecting pipe 43 communicates with the storage tank 41. The pushing plate 1 is arranged to move vertically in the hydraulic chamber 42. The pushing plate 1 and the hydraulic chamber 42 on its side close to the first connecting pipe 43 form a hydraulic cavity, and the first connecting pipe 43 communicates with the hydraulic cavity.

[0039] A pump body 441 is arranged on the second connecting pipe 44. The pump body 441 can pump the hydraulic oil in the storage tank 41 into the hydraulic chamber 42 through the second connecting pipe 44 and the first connecting pipe 43. When the hydraulic oil enters the hydraulic chamber 42, the pushing plate 1 located in the hydraulic chamber 42 drives the coating roller 2 to move. At this time, the two coating rollers 2 move away from each other. When the hydraulic oil is pumped back from the hydraulic chamber 42 to the storage tank 41 by the pump body 441, the two coating rollers 2 approach each other.

[0040] Refer to Figure 6 and Figure 7 : A synchronization unit 45 is arranged between the two pushing plates 1. The synchronization unit 45 includes two winding rollers 452. The ends of the two winding rollers 452 are fixedly connected. The two winding rollers 452 rotate synchronously when rotating. A synchronization rope 451 is wound around the winding rollers 452. The synchronization ropes 451 on the two winding rollers 452 are respectively fixedly connected to the two vertically arranged pushing plates 1.

[0041] The synchronous rope 451 is preferably a polyester static rope. Since the ends of the two winding rollers 452 are fixedly connected to each other, the two winding rollers 452 will necessarily rotate synchronously when rotating. When the two pushing plates 1 move away from each other, the pushing plate 1 pulls the corresponding synchronous rope 451 out from the winding roller 452 around which the synchronous rope 451 is wound. When the synchronous rope 451 is released, it drives the winding roller 452 to rotate. Since the two winding rollers 452 are fixedly connected, the two winding rollers 452 rotate synchronously. If the synchronous unit 45 is not provided, since the two hydraulic chambers 42 are connected by the first connecting pipe 43, when the second connecting pipe 44 injects hydraulic oil into the two hydraulic chambers 42 through the first connecting pipe 43, there will be a situation where more oil is injected into one hydraulic chamber and less oil is injected into the other hydraulic chamber. After the synchronous unit 45 is provided, through the two winding rollers 452 and the synchronous rope 451 wound around the winding roller, the two pushing plates 1 can move synchronously when separating. When the two pushing plates 1 drive the two coating rollers 2 to separate from each other, it is after the coating rollers 2 are zeroed. After the synchronous unit 45 is provided, when the two coating rollers 2 separate, the height of the symmetry line of the two coating rollers 2 will not change. Otherwise, if the upper coating roller 2 rises faster due to more oil injection by the corresponding pushing plate 1, it will necessarily cause the lower coating roller 2 to descend slower. In this way, although the total movement amount of the two coating rollers 2 remains unchanged, the symmetry height of the two coating rollers 2 changes, resulting in the bending of the substrate when passing through the two coating rollers 2. Therefore, ensuring that the height of the symmetry line between the two coating rollers 2 does not change can ensure that the substrate 3 will not be damaged when passing between the two coating rollers 2.

[0042] Refer to Figure 2 and Figure 9 : A winding unit 453 capable of driving the winding roller 452 to rotate is provided at the end of the winding roller 452. When the winding unit 453 drives the winding roller 452 to rotate, the winding roller 452 can wind the synchronous rope 451. At this time, the two pushing plates 1 move closer to each other. When the winding unit 453 drives the winding roller 452 to rotate, the rotation direction of the winding roller 452 is opposite to the rotation direction of the winding roller 452 when the two coating rollers 2 separate from each other. The winding unit 453 is started when the two coating rollers 2 move closer to each other.

[0043] The synchronous rope 451 located on the winding roller 452 is always in a vertical state before and after being released and wound. In the prior art, the fact that the above-mentioned synchronous rope 451 is in a vertical state can guide the winding synchronous rope 451 through a rope guide, so that the synchronous rope 451 is always in a vertical state. The diameter of the synchronous rope 451 when it is wound on the winding roller 452 is d. Thus, the circumference of the synchronous rope 451 wound around one week is C = πd. The height change of the hydraulic oil in the hydraulic chamber 42 is h1, the horizontal area of the hydraulic chamber 42 is S, and the changed volume of the hydraulic chamber 42 is V1 = h1 * S. The transmission ratio between the turbine pump 4541 and the winding roller 452 is k2. Let the number of rotation turns of the turbine pump 4541 be q1, and the number of rotation turns of the winding roller 452 be q2. Then the following formula can be obtained: q2 = k2 * q1. Let the actual winding length of the synchronous rope 451 be h2, h2 = q2 * C, that is, h2 = q2 * πd. The number of rotation turns of the turbine pump 4541 is in a proportional relationship with the volume V1 discharged from the hydraulic chamber 42. The proportionality coefficient is set as k1. The following formula can be obtained: V1 = k1 * q1, q1 = V1 / k1. Substitute q1 into the ratio formula of q2 and q1 to get q2 = k2 * V1 / k1. Here, k2 / k1 is a constant. Therefore, k2 / k1 is set as k, and q2 = k * V1 is obtained. The actual winding length of the synchronous rope 451 is h2 = k * V1 * πd. Substitute V1 = h1 * S into h2 = k * V1 * πd to get h2 = k * S * πd * h1. If h2 = h1 is to be achieved, only k * S * πd = 1 needs to be satisfied. Among them, both k and π are constants, S is the horizontal area of the hydraulic chamber 42, and d is the diameter of the synchronous rope 451 when it is wound on the winding roller 452. Thus, it is proved that the actual winding length h2 of the synchronous rope 451 can be the same as the height change h1 of the hydraulic oil in the hydraulic chamber 42.

[0044] Refer to Figure 4 、 Figure 5 and Figures 7 - 9 : A clamping disc 4533 is fixedly arranged at the end of the winding roller 452. Clamping grooves are evenly formed on the peripheral wall of the clamping disc 4533 around the axis of the clamping disc 4533. The winding unit 453 includes a rotating ring 4531 that rotates around the axis of the clamping disc 4533. Elastic pieces 4532 are evenly arranged on the inner ring of the rotating ring 4531 around the axis of the rotating ring 4531. The elastic pieces 4532 are in clamping cooperation with the clamping grooves. When the two pushing plates 1 move away from each other, the elastic pieces 4532 retract into the rotating ring 4531. Before the two pushing plates 1 move close to each other, the elastic pieces 4532 pop out from the rotating ring 4531 and are clamped with the clamping grooves on the clamping disc 4533.

[0045] The shrapnel 4532 is hydraulically driven. The winding unit 453 further includes an annular side plate 4534 and a hydraulic pump 4535. An annular cavity is provided inside the rotating ring 4531, and the annular cavity is filled with hydraulic oil. An annular groove is formed on the periphery of the rotating ring 4531. The annular side plate 4534 is disposed on the annular groove. The hydraulic pump 4535 is disposed on one side of the annular side plate 4534 and communicates with the annular cavity. When the hydraulic pump 4535 pumps hydraulic oil into the annular cavity, the shrapnel 4532 pops out from the inside of the rotating ring 4531. When the hydraulic pump 4535 pumps out the hydraulic oil in the annular cavity, the shrapnel 4532 retracts from the rotating ring 4531. When the rotating ring 4531 rotates, the annular side plate 4534 does not rotate.

[0046] Refer to Figures 7 - 10 : A third connecting pipe 455 that connects the two hydraulic chambers 42 is vertically provided on one side of the first connecting pipe 43. A fourth connecting pipe 456 is disposed on the third connecting pipe and communicates with the third connecting pipe. A driving unit 454 for driving the rotation of the rotating ring 4531 is provided on the fourth connecting pipe 456. When the two pushing plates 1 approach each other, the oil in the hydraulic chamber 42 is discharged into the fourth connecting pipe 456 through the third connecting pipe 455. When the oil in the fourth connecting pipe 456 flows, it can drive the driving unit 454.

[0047] Before the two coating rollers 2 approach each other, the first connecting pipe 43 is in a disconnected state. When the hydraulic oil in the hydraulic chamber 42 is discharged, it can only be discharged into the fourth connecting pipe 456 through the third connecting pipe 455. The driving unit 454 includes a turbine pump 4541, a synchronous pulley 4542, a synchronous ring 4543, and a synchronous belt 4544. The turbine pump 4541 is arranged on the fourth connecting pipe 456. When the hydraulic oil flows in the fourth connecting pipe 456, the output end of the turbine pump 4541 is driven to rotate. The synchronous pulley 4542 is fixedly arranged on the output end of the turbine pump 4541. The synchronous ring 4543 is fixedly arranged at the end of the rotating ring 4531. The axis of the synchronous ring 4543 is collinear with the axis of the rotating ring 4531. The synchronous belt 4544 is sleeved on the synchronous pulley 4542 and the synchronous ring 4543 respectively, and the synchronous belt 4544 is in transmission cooperation with the synchronous pulley 4542 and the synchronous ring 4543 respectively. It should be noted that within a unit time, the total discharge amount of the hydraulic oil in the two hydraulic chambers 42 is the same as the discharge amount of the turbine pump 4541. After the output end of the turbine pump 4541 rotates, under the transmission of the synchronous pulley 4542, the synchronous ring 4543, and the synchronous belt 4544, the rotating ring 4531 can rotate smoothly. The elastic piece 4532 on the rotating ring 4531 is in a popped-up state, and the elastic piece 4532 is in snap-fit with the snap groove on the snap disk 4533. After the rotating ring 4531 rotates, the snap disk 4533 rotates synchronously with the rotating ring 4531. The snap disk 4533 drives the winding roller 452 to wind the synchronous rope 451. The length of the synchronous rope 451 wound within a unit time is the same as the height change amount of the hydraulic oil in the hydraulic chamber 42. The fourth connecting pipe 456 is communicated with the second connecting pipe 44, and the fourth connecting pipe 456 can guide the hydraulic oil in the hydraulic chamber 42 back to the storage tank 41.

[0048] Refer to Figure 1 , Figure 2 and Figure 9 : An elastic sleeve 411 is arranged at the upper part of the storage tank 41. The elastic sleeve 411 is communicated with the storage tank 41. When the hydraulic oil in the storage tank 41 is discharged, the elastic sleeve 411 shrinks. When the hydraulic oil in the storage tank 41 increases, the elastic sleeve 411 expands.

[0049] An elastic sleeve 411 is provided on the storage tank 41. When the hydraulic oil in the storage tank 41 is drained and flows back, the air in the storage tank 41 can be discharged through the elastic sleeve 411. That is, when the hydraulic oil in the storage tank 41 is drained, the hydraulic oil in the storage tank 41 decreases, and the air in the storage tank 41 increases. Thus, the air in the elastic sleeve 411 surges into the storage tank 41, causing the elastic sleeve 411 to shrink. On the contrary, when the hydraulic oil flows back into the storage tank 41, the air in the storage tank 41 needs to be discharged. The discharged air enters the elastic sleeve 411, causing the elastic sleeve 411 to expand. This prevents the air in the storage tank 41 from coming into contact with the outside world, ensuring that the water vapor in the outside air does not mix into the hydraulic oil in the storage tank 41, preventing the hydraulic oil from deteriorating, and ensuring that the density of the hydraulic oil remains constant.

[0050] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An MLCC high-speed precision film casting machine, comprising two vertically arranged push plates (1) and a coating roller (2) arranged on the two push plates (1); It is characterized in that The two push plates (1) can drive the two coating rollers (2) to move closer to or farther from each other. The push plates (1) are driven by hydraulic pressure. A supply measurement unit (4) for providing hydraulic driving force for the push plates (1) is arranged on one side of the push plates (1). The supply measurement unit (4) comprises a storage box (41) and a first pressure sensor. Hydraulic oil is stored in the storage box (41). The storage box (41) supplies oil to the push plates (1). The first pressure sensor is arranged at the bottom of the storage box (41). The horizontal cross-sectional area of ​​the storage box (41) is constant. The first pressure sensor is used to monitor the mass change of the hydraulic oil in the storage box (41) when the push plates (1) move. The storage box (41) is also provided with a processor. The processor calculates the height change of the hydraulic oil according to the mass change and the horizontal cross-sectional area of ​​the storage box (41). The height change is the same as the total movement change of the two push plates (1). A synchronization unit (45) is provided between the two pushing plates (1), and the synchronization unit (45) comprises two winding rollers (452); A winding unit (453) capable of driving the winding roller (452) to rotate is provided at the end of the winding roller (452); A hydraulic chamber (42) is sleeved on the outer side of the push plate (1), and the push plate (1) can slide in the hydraulic chamber (42); When the two push plates (1) respectively drive the two coating rollers (2) away from each other, the hydraulic oil in the storage box (41) is discharged; when the two push plates (1) respectively drive the two coating rollers (2) toward each other, the hydraulic oil flows back into the storage box (41); The ends of the two winding rollers (452) are fixedly connected, the two winding rollers (452) rotate synchronously when rotating, a synchronization rope (451) is wound around the winding rollers (452), and the synchronization ropes (451) on the two winding rollers (452) are respectively fixedly connected to two vertically arranged push plates (1).

2. The MLCC high-speed precision film casting machine according to claim 1, characterized in that: The changed volume of the hydraulic oil is calculated by the density of the hydraulic oil and the mass change of the hydraulic oil in the storage tank (41), and the height change of the hydraulic oil in the storage tank (41) is calculated by dividing the changed volume by the horizontal cross-sectional area of ​​the storage tank (41).

3. The MLCC high-speed precision film casting machine according to claim 1, characterized in that: A second pressure sensor is arranged on the peripheral wall of the coating roller (2). Before use, the two coating rollers (2) are driven to approach each other by the two pushing plates (1). When the two coating rollers (2) are in contact, the second pressure sensor detects a pressure value and the pushing plate (1) stops moving.

4. The MLCC high-speed precision film casting machine according to claim 1, characterized in that: The supply measurement unit (4) comprises two hydraulic chambers (42) arranged vertically and a first connecting pipe (43) connecting the two hydraulic chambers (42); a second connecting pipe (44) is connected to the first connecting pipe (43); an end of the second connecting pipe (44) away from the first connecting pipe (43) is connected to the storage box (41); a push plate (1) is arranged in the hydraulic chamber (42) to move in a vertical direction; the push plate (1) and the hydraulic chamber (42) on a side close to the first connecting pipe (43) form a hydraulic chamber; and the first connecting pipe (43) is connected to the hydraulic chamber.

5. The MLCC high-speed precision film casting machine according to claim 1, characterized in that: When the winding unit (453) drives the winding roller (452) to rotate, the winding roller (452) can reel in the synchronous rope (451), and at this time, the two pushing plates (1) approach each other. When the winding unit (453) drives the winding roller (452) to rotate, the rotation direction of the winding roller (452) is opposite to the rotation direction of the winding roller (452) when the two coating rollers (2) are separated from each other. The winding unit (453) is started when the two coating rollers (2) approach each other.

6. The MLCC high-speed precision film casting machine according to claim 5, characterized in that: A clamping disc (4533) is fixedly arranged at the end of the winding roller (452), and clamping grooves are evenly arranged on the outer peripheral wall of the clamping disc (4533) around the axis of the clamping disc (4533). The winding unit (453) comprises a rotating ring (4531) rotating around the axis of the clamping disc (4533), and spring pieces (4532) are evenly arranged on the inner ring of the rotating ring (4531) around the axis of the rotating ring (4531). The spring pieces (4532) are clamped and matched with the clamping grooves. When the two push plates (1) move away from each other, the spring pieces (4532) retract into the rotating ring (4531), and before the two push plates (1) move closer to each other, the spring pieces (4532) pop out from the rotating ring (4531) and are clamped with the clamping grooves on the clamping disc (4533).

7. The MLCC high-speed precision film casting machine according to claim 6, characterized in that: A third connecting pipe (455) is vertically arranged on one side of the first connecting pipe (43) for connecting the two hydraulic chambers (42); a fourth connecting pipe (456) is arranged on the third connecting pipe and is connected to the third connecting pipe; a driving unit (454) for driving the rotating ring (4531) to rotate is arranged on the fourth connecting pipe (456); when the two push plates (1) approach each other, the oil in the hydraulic chamber (42) is discharged into the fourth connecting pipe (456) through the third connecting pipe (455); when the oil in the fourth connecting pipe (456) flows, the driving unit (454) can be driven.

8. The MLCC high-speed precision film casting machine according to claim 1, characterized in that: An elastic sleeve (411) is arranged on the upper part of the storage box (41). The elastic sleeve (411) is in communication with the storage box (41). When the hydraulic oil in the storage box (41) is discharged, the elastic sleeve (411) shrinks. When the hydraulic oil in the storage box (41) increases, the elastic sleeve (411) expands.

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