A mold rotating turntable device

Abstract

This invention discloses a mold rotating turntable device, belonging to the technical field of mold rotating turntable devices. This solution aims to solve the problem of shaft wear caused by eccentric molds. The device includes a feedback component equipped with a pressure sensor, an adjustable preload support component, an oil replenishment component with pressure linkage compensation function, and an automatic adjustment component. Through a quantitative correction process, it presets the optimal static support force distribution for a specific mold, effectively offsetting the overturning moment and ensuring smooth shaft operation. Simultaneously, the unique mechanical linkage design allows for real-time matching of lubrication intensity and load, achieving on-demand oil supply. The system's operating status is digitally monitored throughout, and it can provide early warning of mechanical failures when the pressure remains abnormal after lubrication, significantly improving equipment reliability, lifespan, and maintainability.

Description

Technical Field

[0001] This invention relates to the field of mold rotating turntable devices, and particularly to a mold rotating turntable device. Background Technology

[0002] In industrial production, the mold rotary table device is a core process equipment. Its core function is to carry and periodically change the position and station of the mold through the precise rotation of the turntable, so as to meet the needs of multi-process integration or synchronous operation in continuous and automated production. Specific application examples include: in multi-station injection molding machines, the turntable drives the mold to complete mold closing, injection, cooling, and mold opening and part removal sequentially; in die casting units, the mold is circulated between the pouring, molding, and cooling stations; in tire forming machines, the drum and mold are driven to perform layering and shaping. In actual production, due to the product shape determining the asymmetrical distribution of the cavity (such as the cavity of an automobile bumper mold being biased to one side due to its arc structure), and the fact that functional components such as the hot runner system and hydraulic core pulling mechanism are concentrated on one side of the mold due to space constraints, coupled with positioning errors during installation and uneven pre-tightening force of fasteners, the center of mass of the mold is often difficult to completely coincide with the rotation axis of the turntable. In these scenarios, the mold itself usually has a large mass, ranging from hundreds of kilograms to several tons, and needs to maintain stable support and precise positioning during rotation.

[0003] However, due to the objective existence of the aforementioned mold structure asymmetry or installation errors, when the mold's center of mass deviates from the turntable's rotation axis, an eccentric gravity force is generated, always pointing vertically downwards. The magnitude of this gravity force is determined by the mold's mass and eccentricity, remaining constant within the same mold's operating cycle. When the turntable rotates, the point of application of this eccentric gravity force undergoes circular motion relative to the main body of the equipment, thereby generating a radial overturning moment with a periodically changing direction on the rotating shaft. It is particularly important to note that the actual load effect generated by this moment varies significantly at different angular positions on the rotating shaft: when the mold's eccentric mass rotates to directly below the rotating shaft (i.e., at the 6 o'clock position), the overturning moment generated by the eccentric gravity is superimposed in the same direction as the rotating shaft's own weight, and the resultant force acts directly and concentratedly on the support area below the rotating shaft, forming significant local high pressure; while when the mold's eccentric mass is directly above the rotating shaft (i.e., at the 12 o'clock position), although the eccentric gravity force is still vertically downwards, its effect is manifested as applying an outward tilting tendency to the upper end of the rotating shaft. At this time, the load is shared by multiple support points above and below, and the pressure at a single point is significantly reduced. This periodic, non-uniform load distribution causes the shaft to wobble periodically within the rotating sleeve, continuously applying high stress to localized contact areas in a specific direction.

[0004] Traditional rigid bearing support structures employ fixed geometric constraints, failing to adapt to dynamic load changes. They passively withstand periodic impacts, leading to uneven and abnormal wear between the shaft and rotating sleeve in high-pressure areas. Furthermore, conventional timed and metered lubrication methods supply lubricant at fixed intervals and volumes, failing to detect instantaneous load variations. This results in insufficient oil film thickness and load-bearing capacity at critical moments when the shaft deflects to high-pressure positions, causing direct metal-to-metal contact and further exacerbating wear. Ultimately, these problems lead to a series of engineering challenges, including decreased equipment operating accuracy, increased vibration and noise, shortened maintenance cycles, and even premature failure of critical components. Summary of the Invention

[0005] This invention provides a mold rotating turntable device, which can solve the problem of abnormal wear of the rotating shaft caused by the static gravitational torque generated by the eccentric mold in the prior art.

[0006] A mold rotating turntable device includes: a mold rotating turntable body, including a rotating sleeve installed inside the mold rotating turntable body, and a rotating shaft disposed inside the rotating sleeve, the rotating shaft being connected to a turntable for mounting a mold; a feedback assembly installed inside the mold rotating turntable body, including a feedback ring with multiple pressure sensors; a support assembly including a support ring, the support ring having an adjusting support cylinder threadedly connected to it, the pressure change inside the adjusting support cylinder being detectable by pressure sensors on the feedback ring; an oil replenishment assembly including a lubrication ring connected to the support ring, which supplies oil to the rotating sleeve and each supporting arc-shaped lubrication block through an oil passage; and an adjustment assembly movably disposed on the side of the lubrication ring, used to drive any adjusting support cylinder to rotate, thereby adjusting its preload on the rotating shaft.

[0007] Preferably, the feedback component includes a pair of connecting posts, one end of which is connected to a feedback ring away from each other. The feedback ring is mounted on the main body of the mold rotating turntable, and a plurality of pressure sensors are mounted on the feedback ring. A fixing ring is installed at one end of each connecting post.

[0008] Preferably, the support ring is connected to the fixed ring via a connecting rod, and the top of the adjusting support cylinder is provided with a connected feedback support cylinder, and the adjusting support cylinder and the feedback support cylinder are rotatably connected via a bearing. The adjusting support cylinder is provided with a sealing groove, and a sealing ring is embedded in the sealing groove. The sealing ring is interference-fitted with the feedback support cylinder.

[0009] Preferably, a compression sealing rod is installed inside the adjusting support cylinder, and a plurality of first elastic support strips are installed on the inner wall of the adjusting support cylinder. The first elastic support strips are connected to the compression sealing rod. A supporting arc-shaped lubricating block is installed at one end of the compression sealing rod that passes through the fixing ring and extends to the inner side of the fixing ring. The supporting arc-shaped lubricating block abuts against the rotating shaft.

[0010] Preferably, a feedback sealing rod is installed inside the feedback support cylinder, and a plurality of second elastic support bars are installed inside the feedback support cylinder. The second elastic support bars are connected to the feedback sealing rod, and the feedback sealing rod abuts against the pressure sensor.

[0011] Preferably, the lubrication ring is connected to the support ring, and an oil replenishment pipe is installed at the top of the lubrication ring. The top of the oil replenishment pipe passes through the feedback ring and extends to the outside of the feedback ring. A lubrication channel is provided inside the lubrication ring, and lubricating oil is provided inside the lubrication channel. Multiple telescopic sleeves are installed on the lubrication ring. The telescopic sleeves are connected to the lubrication channel and are connected to the supporting arc-shaped lubrication block.

[0012] Preferably, a first lubrication replenishment pipe is installed at the bottom end of the lubrication ring. The first lubrication replenishment pipe is connected to the lubrication flow channel, and a plurality of lubrication nozzles are installed at the bottom end of the first lubrication replenishment pipe. The lubrication nozzles are connected to the rotating sleeve.

[0013] Preferably, a compensation pipe is installed at one end of the first lubrication replenishment pipe and connected thereto. A backflow prevention check valve is installed at the connection between the compensation pipe and the first lubrication replenishment pipe. A compensation sealing cylinder is installed at one end of the compensation pipe and connected thereto. A compensation sealing rod is installed inside the compensation sealing cylinder. The compensation sealing cylinder is connected to the uppermost feedback sealing rod.

[0014] Preferably, a reset check valve is installed at the outer end of the compensation sealing cylinder, and multiple reset strips are installed inside the compensation sealing cylinder, the reset strips being connected to the compensation sealing rod.

[0015] Preferably, the adjustment assembly includes an electric slide rail mounted on one side of the lubrication ring, and an electric slider installed inside the electric slide rail. A first electric push rod is installed at the output end of the electric slider, a second electric push rod is installed at the output end of the first electric push rod, an adjustment frame is installed at the output end of the second electric push rod, and a pair of electric rollers are installed on the adjustment frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) This invention uses a four-point benchmark step-by-step diameter balance standardization correction process based on quantitative sensing feedback to pre-set an optimal static support force distribution for the device after installing a specific mold. This correction actively constructs a support torque that counteracts the static gravity torque of the mold by coordinating the adjustment of the support cylinders in the key vertical orientation. This ensures that the shaft is in an elastic bending state with moderate stress level and reasonable distribution before rotation begins. This not only effectively offsets the main overturning torque and transforms the complex load matching problem into a definable and repeatable engineering operation, but also makes the change of the bending state of the shaft smooth and continuous during subsequent dynamic rotation, significantly reducing the starting impact and running vibration, and laying a mechanical foundation for achieving stable, low-wear long-cycle operation.

[0018] (2) This solution uses a unique mechanical linkage design, with the feedback sealing rod driving the compensation sealing rod, to achieve adaptive and proportional linkage between lubrication pressure and support load. This ensures that enhanced lubrication can be automatically triggered when the shaft load increases, providing precise protection for high wear risk points. This breaks through the limitations of traditional timed lubrication. At the same time, the operating status of the entire system is digitally monitored throughout the process by the pressure sensor on the feedback loop. If the pressure data remains abnormal after enhanced lubrication, the system can immediately determine that there is a mechanical fault that exceeds the lubrication adjustment capacity and issue an alarm, which greatly improves the reliability and maintainability of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the mold rotating turntable device provided by the present invention;

[0020] Figure 2 A three-dimensional structural diagram of the mold rotating turntable device provided by the present invention;

[0021] Figure 3 A three-dimensional structural diagram of the feedback component provided by the present invention;

[0022] Figure 4 A three-dimensional structural diagram of the support component provided by the present invention;

[0023] Figure 5 A three-dimensional structural diagram of the oil replenishment component provided by the present invention;

[0024] Figure 6 A schematic diagram of the specific structure of the oil replenishment component provided by the present invention;

[0025] Figure 7 This is a schematic diagram of the rotating shaft and rotating sleeve structure provided by the present invention;

[0026] Figure 8 A schematic diagram of the internal structure of the support component provided by the present invention;

[0027] Figure 9 This is a schematic diagram of the adjusting support cylinder and feedback support cylinder structure provided by the present invention;

[0028] Figure 10 This is a schematic diagram of the lubrication ring structure provided by the present invention;

[0029] Figure 11 A schematic diagram of the compensating sealing cylinder structure provided by the present invention;

[0030] Figure 12 This is a three-dimensional structural diagram of the adjustment component provided by the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Mold rotating turntable body; 2. Feedback component; 3. Support component; 4. Oil replenishment component; 5. Adjustment component; 11. Turntable; 12. Rotating shaft; 13. Rotating sleeve; 21. Connecting column; 22. Fixing ring; 23. Feedback ring; 31. Support ring; 32. Adjusting support cylinder; 33. Support arc-shaped lubricating block; 34. Feedback support cylinder; 35. Extrusion sealing rod; 36. First elastic support bar; 37. Feedback sealing rod; 38. Second elastic support bar; 41. Lubrication ring; 42. Telescopic sleeve; 43. Oil replenishment pipe; 44. Compensation pipe; 45. Compensation sealing cylinder; 46. Compensation sealing rod; 47. First lubrication oil replenishment pipe; 51. Electric slide rail; 52. Electric slider; 53. First electric push rod; 54. Second electric push rod; 55. Adjustment frame; 56. Electric roller. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0034] like Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a mold rotating turntable device, comprising: a mold rotating turntable body 1, including a rotating sleeve 13 installed in the mold rotating turntable body 1, and a rotating shaft 12 disposed in the rotating sleeve 13, the rotating shaft 12 being connected to a turntable 11 for mounting a mold; a feedback component 2, installed in the mold rotating turntable body 1, including a feedback ring 23 with multiple pressure sensors; a support component 3, including a support ring 31, on which an adjusting support cylinder 32 is threadedly connected, the pressure change in the adjusting support cylinder 32 being detectable by the pressure sensors on the feedback ring 23; an oil replenishment component 4, including a lubrication ring 41 connected to the support ring 31, which supplies oil to the rotating sleeve 13 and each supporting arc-shaped lubrication block 33 through an oil passage; and an adjustment component 5, movably disposed on the side of the lubrication ring 41, for driving any adjusting support cylinder 32 to rotate, thereby adjusting its preload on the rotating shaft 12.

[0035] The mold rotating turntable device provided in this solution aims to systematically solve the technical problem of abnormal wear of the rotating shaft 12 caused by the static gravitational torque generated by the eccentric mold. The core of the problem is that the mold installed on the turntable 11 generates an eccentric gravity that is always vertically downward because its center of mass is off the axis of rotation.

[0036] When the turntable 11 rotates, this gravity is converted into a radial overturning moment that changes periodically on the rotating shaft 12, forcing the rotating shaft 12 to oscillate periodically within the rotating sleeve 13, resulting in local high pressure and severe wear. Traditional rigid support and timed lubrication methods cannot adaptively compensate for and protect against this dynamic load.

[0037] This solution uses a standardized correction process based on a four-point benchmark step-by-step diagonal balance based on quantitative sensor feedback to pre-determine the optimal static support force distribution for the device after installing a specific mold.

[0038] This process actively constructs a supporting torque that counteracts the static gravitational torque of the mold by diagonally adjusting key positions such as 0° and 180° of the support cylinder 32, so that the rotating shaft 12 is in an elastic bending state with moderate stress level and reasonable distribution before the rotation begins.

[0039] This not only effectively offset the main overturning moment, transforming the complex load matching problem into a definable and repeatable engineering operation, but also made the bending shape of the shaft change smoothly and continuously during subsequent dynamic rotation, significantly reducing start-up impact and running vibration, and laying a mechanical foundation for achieving stable, low-wear long-cycle operation.

[0040] Based on this, this solution further achieves intelligent coordination between lubrication and load through a unique mechanical linkage design. Specifically, the displacement of the feedback sealing rod 37 drives the compensation sealing rod 46, thereby establishing an adaptive and proportional linkage between lubrication pressure and support load.

[0041] This mechanism ensures that enhanced lubrication is automatically triggered at critical moments when the shaft load increases instantaneously, providing precise protection for high wear risk points, thus overcoming the limitations of traditional timed lubrication.

[0042] Meanwhile, the health status of the entire system is digitally monitored throughout the process through the pressure sensor on the feedback loop 23, giving the device the ability to perceive its status and diagnose faults.

[0043] If the pressure data remains abnormal after enhanced lubrication, the system can immediately determine that there is a mechanical fault exceeding the lubrication adjustment capacity, such as structural damage or jamming, and issue an alarm. This not only greatly improves the reliability and maintainability of the equipment, but also transforms it from a passive maintenance to a proactive and preventative intelligent operation and maintenance mode.

[0044] like Figures 3 to 9 As shown, the feedback component 2 includes a pair of connecting posts 21. The two connecting posts 21 are connected to a feedback ring 23 at one end, which is away from each other. The feedback ring 23 is installed on the main body 1 of the mold rotating turntable. Multiple pressure sensors are installed on the feedback ring 23. A fixing ring 22 is installed at one end of the connecting posts 21.

[0045] The support ring 31 is connected to the fixed ring 22 via a connecting rod. The top of the adjusting support cylinder 32 is provided with a connected feedback support cylinder 34. The adjusting support cylinder 32 and the feedback support cylinder 34 are rotatably connected via a bearing. The adjusting support cylinder 32 is provided with a sealing groove, and a sealing ring is embedded in the sealing groove. The sealing ring and the feedback support cylinder 34 are interference-fitted.

[0046] An extrusion sealing rod 35 is installed inside the adjusting support cylinder 32, and a plurality of first elastic support strips 36 are installed on the inner wall of the adjusting support cylinder 32. The first elastic support strips 36 are connected to the extrusion sealing rod 35. The extrusion sealing rod 35 passes through the fixing ring 22 and extends to one end of the fixing ring 22, where a support arc-shaped lubricating block 33 is installed. The support arc-shaped lubricating block 33 abuts against the rotating shaft 12.

[0047] A feedback sealing rod 37 is installed inside the feedback support cylinder 34, and multiple second elastic support bars 38 are installed inside the feedback support cylinder 34. The second elastic support bars 38 are connected to the feedback sealing rod 37, and the feedback sealing rod 37 abuts against the pressure sensor.

[0048] In this invention, the problem of wear on the rotating shaft 12 caused by eccentric load on the mold rotating turntable is addressed by providing a support device with quantifiable initial correction and real-time monitoring functions. The device consists of a feedback component 2, a support component 3, and an adjustment component 5. It converts the lateral force on the rotating shaft 12, which dynamically changes with the mold angle, into a precisely measurable pressure signal. First, it sets the optimal working base point for the device through a systematic correction process, thereby laying the foundation for solving the matching problem between dynamic torque and static compensation structure.

[0049] To ensure that the device provides effective support for a specific mold, a repeatable mechanical calibration process must be performed first. The calibration is aimed at the fact that since the mold is mounted on the turntable 11 and its center of mass is not on the rotation center line of the rotating shaft 12, an eccentric gravity is generated that is always vertically downward. The magnitude of this gravity is determined by the mass of the mold and remains unchanged during the operating cycle of the same mold.

[0050] When the turntable 11 rotates, the point of application of this gravity moves in a circular motion relative to the main body 1 of the mold rotating turntable, thereby generating a radial overturning moment with a periodically changing direction on the rotating shaft 12. The actual load effect generated by this moment varies significantly at different angular positions of the rotating shaft. This moment is the fundamental reason why the rotating shaft 12 periodically presses the arc-shaped lubricating block 33 supporting different directions.

[0051] It should be noted that the load on the shaft is most severe when the mold is at the 180° position (i.e., the 6 o'clock direction). The reason is that at this time, the eccentric mass of the mold is directly below the shaft, and the overturning moment generated by the eccentric gravity is in the same direction as the weight of the shaft. The two are superimposed in the same direction, and the resultant force is directly and concentrated on the supporting arc-shaped lubricating block 33 below the shaft, generating significant local high pressure.

[0052] When the mold is at the 0° position (i.e., the 12 o'clock direction), the eccentric mass of the mold is located directly above the shaft. Although the eccentric gravity is still vertically downward, its effect is to exert a downward pulling tendency on the shaft. At this time, the shaft exhibits a bending deformation tendency with the upper end tilting outward and the lower end contracting inward. This deformation is constrained by the support points above and below, and the load is distributed among multiple support points, significantly reducing the pressure borne by a single point.

[0053] Therefore, the instantaneous contact pressure at the 6 o'clock position is much higher than that at the 12 o'clock position, making it the position where shaft wear is most likely to occur and is most severe. This is the fundamental mechanical basis for prioritizing this direction in the calibration process.

[0054] In the actual operation of the turntable, since the turntable only performs periodic low-speed rotation rather than high-speed continuous rotation, the radial impact of the centrifugal force generated by the uneven mass distribution on the shaft is small. Compared with the continuous bias pressure effect of the static eccentric gravity moment on the shaft, it can be ignored. Therefore, the correction of this device is mainly aimed at the wear problem dominated by the static eccentric gravity moment, which runs through the entire process of the turntable operation.

[0055] The calibration follows a four-point reference and step-by-step diagonal balance standardization method based on quantitative sensor feedback. This method first defines the angular reference of the turntable 11: with the axis of the rotating shaft 12 as the center, when viewed from the front, the top is defined as 0°, and the clockwise directions are 90° (right side), 180° (bottom), and 270° (left side). The description of azimuth angles in this manual will follow this definition and will no longer use clock direction expressions.

[0056] The calibration first focuses on four key positions: 0°, 90°, 180°, and 270°. The fundamental reason is that the eccentric gravity of the mold is always vertically downward. When the eccentric mass is located in the 0° or 180° direction, the bending effect of the gravitational moment on the rotating shaft 12 in the vertical plane is the most significant, which is the most severe load on the rotating shaft 12 and must be prioritized for balancing. When the eccentric mass is located in the 90° or 270° direction, the gravitational moment mainly acts in the horizontal plane. Since there are symmetrical supports on both sides of the rotating shaft 12, the load is relatively balanced, and the support points mainly undertake the constraint function of stabilizing and centering.

[0057] The maximum allowable safety support pressure of the system is defined as P-max, which is determined by the elastic limit of the first elastic support bar 36, the allowable contact stress of the material of the support arc lubrication block 33, and the bending strength of the rotating shaft 12. The specific value should be determined by calculation or test based on the mechanical property parameters of the selected material.

[0058] Before performing any specific correction operations, the azimuth angle of the mold's eccentric mass relative to the turntable must first be determined. This step is a prerequisite for all subsequent positioning operations.

[0059] The direction of eccentricity can be identified using one of the following methods:

[0060] The first method is the static free-fall method, which is suitable for situations where the turntable can rotate freely and the frictional resistance is small. The rotation locking mechanism of the turntable is released, so that the turntable is in a state of free rotation. Under the action of the eccentric gravity of the mold, the turntable will rotate spontaneously until the eccentric mass moves to the lowest point (i.e., the 180° direction) and then tends to stop. At this time, the angle position of a certain fixed mark point on the mold relative to the turntable reference scale is recorded, which is the initial azimuth angle of the eccentric mass. In subsequent calibration, the mold is rotated to this angle, which corresponds to the eccentric mass being located at the 180° position.

[0061] The second method is the dynamic pressure scanning method, which is suitable for situations where the turntable has high frictional resistance or cannot rotate freely. The turntable is rotated at a low speed for a complete cycle, and the readings of the pressure sensors in each direction are recorded simultaneously. The angle at which the pressure peak appears corresponds to the moment when the sensor bears the maximum load in that direction. For a sensor in the 180° direction, the turntable angle corresponding to the appearance of its pressure peak is the state where the eccentric mass is located at 180°. Based on this, the correspondence between the mold marking point and the eccentric direction can be established.

[0062] The third method is the known parameter calibration method, which is suitable for situations where the centroid position is clearly marked in the mold design drawings. Based on the drawings, the azimuth angle of the eccentric mass relative to the mold installation reference is calculated. Combined with the actual installation angle of the mold on the turntable, the azimuth angle of the eccentric mass relative to the turntable angle reference is directly calculated.

[0063] After identifying the eccentricity direction, a permanent mark should be set on the mold or turntable to record the correspondence between the eccentric mass direction and the turntable angle reference, so as to quickly locate it during subsequent calibration and re-inspection.

[0064] The specific calibration operation consists of two steps:

[0065] The first step is to adjust the main load balance: rotate the mold so that its eccentric mass is at the 180° position (i.e. directly below the shaft). At this time, the eccentric gravity of the mold and the weight of the shaft are superimposed in the same direction, generating an outward radial thrust on the lower end of the shaft 12, causing the shaft 12 to exhibit a bending trend of the lower end tilting outward and the upper end contracting inward. The supporting arc-shaped lubricating block 33 in the 180° direction bears the maximum contact pressure.

[0066] Based on the aforementioned mechanical properties, adjusting the 180° direction of the adjusting support cylinder 32 by adjusting component 5 at this time essentially reduces its rigid constraint on the bending of the rotating shaft 12, allowing the rotating shaft 12 to rebound moderately within the elastic range to release the abnormal high pressure at that point; at the same time, tightening the 0° direction of the adjusting support cylinder 32 increases its active support force on the upper end of the rotating shaft 12, so as to provide a reverse bending moment to balance the influence of the eccentric gravity moment and prevent the upper end of the rotating shaft 12 from generating excessive displacement due to insufficient constraint.

[0067] This vertical two-point (0° and 180°) adjustment does not aim to make the pressure at the two points equal, but rather optimizes the bending shape of the shaft 12 in the vertical plane by adjusting the constraint stiffness at both ends, so that the pressure sensor readings F0 and F180 at the two points both meet the following requirements: their values ​​are between 30% and 70% of the maximum allowable support pressure P-max, and the absolute value of the difference between the two is not greater than 20% of the maximum allowable support pressure P-max.

[0068] The specific operating procedure is as follows: First, with the eccentric mass of the mold at the 180° position, record the initial reading F180 initial of the pressure sensor in the 180° direction and the initial reading F0 initial of the pressure sensor in the 0° direction.

[0069] Then, operate the adjustment component 5 to loosen the adjustment support cylinder 32 in the 180° direction. Pause after each quarter turn of loosening and observe the real-time reading change of F180. Stop loosening when F180 drops to the target range (i.e., between 30% and 70% of P-max) and record the reading F180 at this time.

[0070] Then, the adjustment support cylinder 32 in the 0° direction is tightened. Similarly, after tightening it by a quarter turn, the real-time reading of F0 is observed. When F0 rises to the target range and the absolute value of the difference between F0 and the adjusted F180 is not greater than 20% of P-max, the tightening is stopped.

[0071] If, during the adjustment process, one reading enters the target range while another reading exceeds the range, fine-tuning should be performed alternately until both readings simultaneously meet the conditions.

[0072] The above correction parameter range is set based on the following: controlling the single-point pressure between 30% and 70% of P-max is to ensure that each support point has sufficient load-bearing capacity to prevent excessive sway of the shaft 12, while also retaining sufficient safety margin to cope with dynamic load fluctuations during operation.

[0073] Limiting the pressure difference between two opposing points (0° and 180°) in the vertical direction to less than 20% of P-max is to ensure that the bending shape of the shaft 12 in the vertical plane is relatively symmetrical, and to avoid periodic impacts during operation due to excessive or insufficient constraint on one side.

[0074] The horizontal support force is set to 10% to 40% of P-max because this direction mainly bears the function of centering constraint rather than main load-bearing. Excessive preload will increase frictional resistance and wear. The above parameter range can be adjusted adaptively according to the specific equipment's working conditions and operating experience.

[0075] After completing the above adjustments, rotate the mold 180° so that its eccentric mass is at the 0° position (i.e., directly above the shaft) for retesting. At this time, the force state of the shaft is reversed. It should be observed that the values ​​of F0 and F180 change accordingly but remain within the allowable range. Read the values ​​of F0 and F180 again to confirm that they are still within the target range. If the deviation exceeds the allowable range, repeat the above fine-tuning process to consolidate this balance.

[0076] It should be noted that the diagonal adjustment strategy adopted in the first step of the main load balance adjustment is based on a systematic optimization of the stress pattern of the rotating shaft 12 under eccentric load, which is fundamentally different from a simple local force enhancement support scheme.

[0077] When the mold is fixed at 180°, the gravitational torque causes the rotating shaft 12 to bend in the 180° direction. If the support force of the adjusting support cylinder 32 at this position is increased to directly resist this deformation, although the position of the rotating shaft 12 can be maintained in a static state, the following adverse consequences will occur: First, the supporting arc-shaped lubricating block 33 and the rotating shaft 12 will bear excessively high local contact stress in the contact area, thereby drastically increasing wear; Second, the bending deformation of the rotating shaft 12 is excessively constrained, and its internal stress state is unbalanced. When the device starts to rotate and the load direction changes, this constrained deformation will be suddenly released, resulting in impact and vibration during operation.

[0078] Therefore, the diagonal adjustment implemented in this scheme, that is, simultaneously loosening the adjustment support cylinder 32 in the 180° direction and tightening the adjustment support cylinder 32 in the 0° direction, has the core purpose of constructing a preset and optimized elastic deformation curve for the rotating shaft 12 during the static correction stage.

[0079] This operation reduces the rigid constraint at the point of maximum load (180° direction), allowing the shaft 12 to recover elastically to a moderate degree, thereby reducing the instantaneous pressure at that point. Simultaneously, by increasing the support preload on the opposite side (0° direction), a reverse bending moment is applied to balance the effect of the gravitational moment. The result of this combined action is that the shaft 12 exhibits a bending shape in the vertical plane with a moderate stress level, a more rational stress distribution, and overall coordination.

[0080] The direct output of this adjustment is to ensure that the pressure sensor readings F0 and F180 conform to the preset quantization range. Its fundamental value lies in dynamic operation; based on this preset configuration, when the shaft 12 rotates continuously, its periodic bending deformation process will be smoother, and the transfer of load between support points will be mitigated, effectively avoiding impact wear and vibration caused by localized stress concentration and sudden changes in state. In summary, this strategy is a master dynamic configuration design based on the overall requirements of the dynamic stability of the rotating system, rather than a passive resistance to instantaneous static loads.

[0081] In the second step of radial constraint balance adjustment, when the mold is fixed at 90° and 270° respectively, the adjustment logic is different from the diagonal adjustment in the first step. The core purpose of this step is to establish a symmetrical and stable centering constraint in the horizontal direction, rather than resisting the huge gravitational torque.

[0082] Therefore, in practice, the adjusting support cylinder 32 on the force-bearing side is usually tightened appropriately to provide the necessary radial support force and prevent the shaft 12 from shaking in that direction.

[0083] Specifically, when the mold is at the 90° position, the adjusting support cylinder 32 at that position can be tightened to set the support force F90; when the mold is at the 270° position, the adjusting support cylinder 32 at that position can be tightened to set the support force F270.

[0084] The goal of adjustment is to make the values ​​of F90 ​​and F270 fall within the preset auxiliary support force range, set to 10% to 40% of the maximum allowable support pressure P-max, and ensure that the difference between the two does not exceed the specified symmetry tolerance, set not greater than 10% of P-max. If the pressure at the two points is already close and moderate in the initial state, only fine-tuning may be required.

[0085] Regarding the handling of other circumferential positions after the four reference points are corrected, this scheme follows the principle of four reference points following the entire circumference. This principle is based on the structural characteristics of the support ring 31: the support ring 31 is a continuous ring structure that is integrally formed or rigidly connected, and the adjustable support cylinders 32 that are evenly distributed on it form a geometric relationship through the ring body, and are not independent of each other.

[0086] From a spatial geometry perspective, the positional relationship of the support ring 31 relative to the rotating shaft 12 can be decomposed into three degrees of freedom: two mutually perpendicular radial translations and one rotation about the axis. Since the support ring 31 is coaxially mounted with the rotating shaft 12 and the rotational degree of freedom is constrained, only the radial positioning in two orthogonal directions needs to be determined.

[0087] The diagonal adjustments in the 0° and 180° directions determine the positioning reference in the vertical plane, and the adjustments in the 90° and 270° directions determine the positioning reference in the horizontal plane. The four orthogonal reference points together determine the complete spatial pose of the support ring 31 relative to the rotating shaft 12.

[0088] Once the axial position of the adjusting support cylinder 32 at the four reference points is locked, the spatial orientation of the support ring 31 is uniquely determined. The gap and contact state between the support arc lubricating block 33 at the other points on the circumference and the rotating shaft 12 are naturally determined by the geometric continuity of the ring. Its theoretical support force can be regarded as the linear interpolation result of the support force of adjacent reference points, without the need for individual adjustment of all points.

[0089] To verify the effectiveness of this full-circle following and ensure the continuity of support, the turntable 11 must be started after calibration for dynamic verification at low speed. The turntable 11 should be rotated at a low speed of no more than 20 percent of the normal operating speed for at least three complete cycles, and the real-time readings of all pressure sensors should be collected simultaneously to plot the pressure angle curve of each sensor reading as a function of the rotation angle.

[0090] An ideal pressure angle curve should exhibit the following characteristics: the curve as a whole should be a smooth and continuous approximate sine wave, reflecting the periodic variation law of eccentric load; the difference between the peak and valley values ​​of the curve should not exceed 50% of the average pressure value, indicating that the load is relatively evenly distributed among the support points.

[0091] The rate of pressure change between any two adjacent sampling points (sampling interval no greater than 5°) should not exceed 10% of the average pressure value, indicating a smooth load transfer process without abrupt changes; the repeatability deviation of pressure readings at the same angular position in multiple consecutive rotation cycles should not exceed 5%, indicating a stable system state. If the pressure curve meets all the above conditions, the correction is deemed qualified; if any condition is not met, targeted correction is required.

[0092] If an abnormal pressure peak or trough appears at a non-reference midpoint angle, it indicates a potential micro-inconsistency such as local installation error, component dimensional deviation, or uneven stiffness of the first elastic support bar 36. In this case, appropriate corrective measures should be selected based on the nature and severity of the anomaly.

[0093] Case 1: If the pressure deviation at the abnormal point (the difference between the theoretical interpolation and the actual value) does not exceed 15% of P-max, and the angular interval between the abnormal point and the nearest reference point is not greater than 30°, the adjustment support cylinder 32 of the nearest reference point should be slightly readjusted first. The adjustment amount should not exceed one-eighth of a turn. The support status of the area can be indirectly improved through the overall fine adjustment of the reference surface. After adjustment, dynamic verification should be carried out again.

[0094] The second type of situation: If the pressure deviation of the abnormal point exceeds 15% of P-max, or the angular interval between the abnormal point and all reference points is greater than 30°, or the abnormality is not eliminated after the first type of correction, then the adjustment support cylinder 32 of the abnormal point itself should be finely adjusted directly. The adjustment amount should not exceed one-sixteenth of a turn. The adjustment direction is: loosen if the pressure is too high, and tighten if the pressure is too low. After adjustment, dynamic verification should be carried out again.

[0095] The third scenario: If there are multiple consecutive abnormal points in the same area, or if the abnormality cannot be eliminated after multiple fine-tuning of a single point, the mechanical parts in that area should be checked for installation errors or manufacturing defects. If necessary, the parts should be replaced and the complete calibration process should be repeated.

[0096] The correction process should follow the principle of small and gradual adjustments, and each adjustment should be re-verified to avoid over-adjustment that could lead to new anomalies in other locations.

[0097] Once the device has completed calibration and is in normal operation, the real-time force monitoring and signal conversion will continue to function. The radial displacement of the rotating shaft 12 due to the dynamic eccentric load will squeeze the corresponding support arc-shaped lubricating block 33 and push the squeeze sealing rod 35 to move.

[0098] The displacement of the compression sealing rod 35 compresses the sealing cavity volume within the regulating support cylinder 32. This pressure change is transmitted seamlessly to the cavity of the feedback support cylinder 34 via the connecting pipe and acts on the feedback sealing rod 37. The feedback sealing rod 37 overcomes the elastic force of the second elastic support bar 38, generating displacement. This displacement is detected by the pressure sensor at the end and converted into an electrical signal. Thus, the complex mechanical load borne by the rotating shaft 12 is linearly and with high fidelity converted into an electrical signal that can be remotely monitored in real time.

[0099] It should be further explained that the pressure sensor readings on the feedback loop 23 are the sole quantitative basis for performing all calibration operations. By observing the real-time values ​​of each pressure sensor, the rotation direction and number of revolutions of the adjustment support cylinder 32 are determined. During the adjustment process, the second electric push rod 54 of the adjustment component 5 needs to drive the electric roller 56 to move synchronously up and down with the axial movement of the adjustment support cylinder 32 to maintain drive contact. This is a necessary mechanical coordination to achieve continuous and precise adjustment.

[0100] The first elastic support bar 36 needs to have high rigidity to provide a stable main support force by squeezing the sealing rod 35; the second elastic support bar 38 should have significantly lower rigidity to ensure that the pressure sensor has high sensitivity to the small displacement of the feedback sealing rod 37. The cooperation between the two determines the range and accuracy of the force measurement system.

[0101] The contact surface between the supporting arc-shaped lubricating block 33 and the rotating shaft 12 should be made of wear-resistant material and have a lubrication groove. This groove should be connected to the lubrication flow channel of the lubrication ring 41 via the telescopic sleeve 42 to ensure the formation of a lubricating oil film while providing support. The rotary dynamic seal between the adjusting support cylinder 32 and the feedback support cylinder 34, as well as the axial dynamic seal between the compression sealing rod 35, the feedback sealing rod 37, and the corresponding inner wall of the cylinder, should be made of a material such as fluororubber that is compatible with the internal medium to ensure long-term reliable sealing of the pressure transmission system.

[0102] like Figure 12 As shown, the adjustment assembly 5 includes an electric slide rail 51, which is installed on one side of the lubrication ring 41. An electric slider 52 is installed inside the electric slide rail 51. A first electric push rod 53 is installed at the output end of the electric slider 52. A second electric push rod 54 is installed at the output end of the first electric push rod 53. An adjustment frame 55 is installed at the output end of the second electric push rod 54. A pair of electric rollers 56 are installed on the adjustment frame 55.

[0103] Among them, the adjustment component 5 of the present invention is an actuator specially designed to realize remote, precise and automated adjustment of each adjustment support cylinder 32. This component solves the problem that it is difficult for people to approach and manually adjust the multiple circumferentially distributed adjustment support cylinders 32 after the device is integrated. It is the key automated guarantee for realizing the above-mentioned four-point reference correction process.

[0104] The structure and working principle of the adjustment component 5 are as follows: the electric slide rail 51 is fixedly installed on one side of the lubrication ring 41 in the form of a ring track, and an electric slider 52 that can move precisely along the circumference of the track is installed inside it.

[0105] The output end of the electric slider 52 is connected to the first electric push rod 53, which can drive the second electric push rod 54 connected to its output end to perform radial extension and retraction. The output end of the second electric push rod 54 is equipped with an adjustment frame 55, on which a pair of electric rollers 56 that can rotate in the same direction or in opposite directions are symmetrically installed.

[0106] When the system command requires adjustment of the adjustment support cylinder 32 in a certain position, the electric slide rail 51 first drives the electric slider 52 to carry the entire end effector to the front of the target cylinder.

[0107] Next, the first electric actuator 53 is activated, pushing the second electric actuator 54 and the adjusting frame 55 to extend radially, so that a pair of electric rollers 56 come into contact with and clamp the outer cylindrical surface of the adjusting support cylinder 32 from both sides.

[0108] Subsequently, a pair of electric rollers 56 rotate synchronously, driving the adjusting support cylinder 32 to rotate clockwise or counterclockwise around its own axis through friction.

[0109] Since the adjusting support cylinder 32 and the support ring 31 are connected by a thread, their rotation will be converted into axial displacement, thereby achieving the adjustment of the preload of the support point.

[0110] During the adjustment process, the second electric push rod 54 can extend and retract in a compensatory manner to keep the electric roller 56 and the adjusting support cylinder 32, whose position changes due to axial movement, in good frictional transmission contact.

[0111] Through program control, it can quickly and accurately locate any target support point and execute precise rotation control, eliminating the inconvenience and errors of manual operation, while maintaining the system's sealing and integration. All adjustment operations are completed automatically inside the device without damaging the external structure or introducing manual tools, ensuring the overall structure's sealing and reliability. Furthermore, the system's matching action execution unit enables automatic correction based on real-time pressure readings through a closed loop.

[0112] The following implementation details need to be clarified: the surfaces of a pair of electric rollers 56 should be made of a material with a high coefficient of friction, preferably polyurethane or rubber coating, to ensure effective driving; the positioning accuracy of the electric slide rail 51, the stroke and thrust of the electric push rod need to match the distribution size and adjustment torque of the adjusting support cylinder 32; the control system of the entire adjusting assembly 5 needs to be linked with the feedback signal of the pressure sensor to realize an automatic control cycle of perception, decision-making and execution.

[0113] like Figures 10 to 11 As shown, the lubrication ring 41 is connected to the support ring 31, and an oil replenishment pipe 43 is installed at the top of the lubrication ring 41. The top of the oil replenishment pipe 43 passes through the feedback ring 23 and extends to the outside of the feedback ring 23. A lubrication channel is provided inside the lubrication ring 41, and lubricating oil is provided inside the lubrication channel. Multiple telescopic sleeves 42 are installed on the lubrication ring 41. The telescopic sleeves 42 are connected to the lubrication channel and are connected to the supporting arc-shaped lubrication block 33.

[0114] The bottom end of the lubrication ring 41 is equipped with a first lubrication replenishment pipe 47, which is connected to the lubrication flow channel. The bottom end of the first lubrication replenishment pipe 47 is equipped with multiple lubrication nozzles, which are connected to the rotating sleeve 13.

[0115] One end of the first lubrication replenishment pipe 47 is connected to a compensation pipe 44. A backflow prevention check valve is installed at the connection between the compensation pipe 44 and the first lubrication replenishment pipe 47. One end of the compensation pipe 44 is connected to a compensation sealing cylinder 45. A compensation sealing rod 46 is installed inside the compensation sealing cylinder 45. The compensation sealing cylinder 45 is connected to the uppermost feedback sealing rod 37. A reset check valve is installed at the outer end of the compensation sealing cylinder 45. Multiple reset strips are installed inside the compensation sealing cylinder 45. The reset strips are connected to the compensation sealing rod 46.

[0116] In this invention, the oil replenishment component 4 constitutes an intelligent lubrication system integrated inside the support system and equipped with pressure linkage compensation function. This component not only provides basic lubrication for the key friction between the rotating sleeve 13 and the rotating shaft 12, but also transforms the real-time changes in the load on the support point into dynamic adjustment of lubrication pressure through a unique mechanical linkage design, realizing on-demand oil supply. This effectively overcomes the problem of insufficient lubrication that may exist in traditional timed lubrication under heavy load and off-center load conditions, thereby specifically suppressing abnormal wear.

[0117] The core lubrication path and pressure compensation linkage mechanism of this system are as follows:

[0118] The annular lubrication ring 41 is fixedly connected to the support ring 31 and serves as a central distribution hub. It has a lubrication channel inside. After the lubricating oil is introduced into the lubrication channel from the external oil source through the oil replenishment pipe 43, it is divided into two branches: the first branch reaches the contact surface between the support arc-shaped lubrication block 33 and the rotating shaft 12 through the flexible telescopic sleeve 42 to achieve direct lubrication; the second branch continuously lubricates the rotating area of ​​the rotating sleeve 13 and the rotating shaft 12 through the first lubrication replenishment pipe 47 and the nozzle at its end.

[0119] The pressure compensation function is achieved through a compensation circuit connected in parallel to the first lubrication replenishment pipe 47. This circuit includes a compensation pipe 44, a compensation sealing cylinder 45, and a compensation sealing rod 46. The compensation sealing rod 46 is mechanically connected to the feedback sealing rod 37 located at the top of the device. A backflow prevention check valve is provided at the connection between the compensation pipe 44 and the first lubrication replenishment pipe 47. A reset check valve is provided at the outer end of the compensation sealing cylinder 45, and a reset strip that provides reset elasticity is installed inside it.

[0120] It should be noted that the connection between the compensation mechanism and the uppermost feedback sealing rod 37 is based on a systematic functional design consideration. Although the deformation of the bottom support block is the greatest when the mold is located at the bottom, this lubrication compensation mechanism is designed to respond to the dynamic overload that may occur in the rotating shaft 12 during the entire rotation cycle, rather than just targeting the static maximum deformation point.

[0121] The uppermost point was chosen as the signal acquisition point because it has the most direct connection with the compensation mechanism, is convenient for spatial layout, and can indiscriminately sense overload components from any direction of the circumference that cause the shaft to lift as a whole. This ensures that no matter which direction the overload comes from, as long as it causes the shaft to shift as a whole, it can be effectively captured and compensation can be triggered.

[0122] Its working process, characteristics during calibration, and anomaly detection are as follows:

[0123] Dynamic compensation process: When the shaft 12 deviates more severely due to overload during operation, it will squeeze the supporting arc-shaped lubricating block 33. Through the pressure transmission of the sealed cavity, it will drive the corresponding feedback sealing rod 37 to move.

[0124] When the uppermost feedback sealing rod 37 experiences additional upward displacement, it pushes the compensation sealing rod 46 to compress the cavity of the compensation sealing cylinder 45. The pressure inside the cavity increases, overcoming the resistance of the anti-backflow check valve, and injects a pressurized airflow into the compensation pipe 44. This instantly increases the oil pressure in the first lubrication replenishment pipe 47, enhancing the lubrication of the main bearing at critical moments. After the load decreases, the reset bar and reset check valve reset the mechanism.

[0125] Compatibility during calibration: During initial calibration, adjusting the adjusting support cylinder 32 will change the position of the supporting arc-shaped lubricating block 33, thereby causing the reference position of the feedback sealing rod 37 to move, and driving the compensation sealing rod 46 to move in the same direction.

[0126] If it moves upward, it will trigger a lubrication compensation; if it moves downward, the reset check valve will open the air intake to adapt to the position change. Both of these situations are normal phenomena in the calibration process. The system can automatically establish a new balance after calibration, without affecting the normal logic of the subsequent pressure compensation function.

[0127] Abnormal condition judgment: The lubrication compensation of this system is designed to deal with periodic or temporary overloads. If the pressure sensor value remains abnormally high after enhanced lubrication is completed, it indicates that there may be a fundamental fault that exceeds the lubrication adjustment capacity, such as mechanical structural damage, severe deformation or jamming. At this time, the system will issue an alarm to prompt that shutdown and maintenance are required.

[0128] System sensitivity guarantee: Although the physical offset of the rotating shaft 12 is small, this device converts the small mechanical displacement into a significant fluid pressure change in the sealed cavity through the pressure transmission chain from the squeeze sealing rod 35 to the sealed fluid and then to the feedback sealing rod 37.

[0129] The pressure change is received by the large-area feedback sealing rod 37, generating a sufficient axial force to drive its movement, thereby ensuring that the pressure sensor can obtain a clear signal and reliably drive the compensation sealing rod 46 to achieve effective pressure gain.

[0130] It should be added that: the telescopic sleeve 42 must be made of a flexible and sealing material to accommodate movement; the opening pressures of the anti-backflow check valve and the reset check valve must be precisely matched to ensure that the compensation action is triggered and reliably reset above the set load threshold; and the entire lubrication and compensation circuit must guarantee strict sealing. The response stroke and pressure gain coefficient of the compensation mechanism need to be specifically calibrated according to the lubrication requirements of the bearing and the transmission characteristics of the system.

[0131] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A mold rotating turntable device, characterized in that, include: The main body of the mold rotating turntable (1) includes a rotating sleeve (13) installed inside the main body of the mold rotating turntable (1) and a rotating shaft (12) disposed inside the rotating sleeve (13), wherein the rotating shaft (12) is connected to the turntable (11) on which the mold is installed. Feedback component (2) includes a feedback loop (23) equipped with multiple pressure sensors; The support assembly (3) includes a support ring (31) and a support arc-shaped lubricating block (33). An adjusting support cylinder (32) is threaded onto the support ring (31). The adjusting support cylinder (32) is used to provide preload to the rotating shaft (12), and the pressure change of the adjusting support cylinder (32) can be detected by a pressure sensor. The oil replenishment assembly (4) includes a lubrication ring (41) connected to the support ring (31), which can supply oil to the rotating sleeve (13) and the supporting arc-shaped lubrication block (33) respectively; Adjustment component (5), located on one side of lubrication ring (41), is used to drive any adjustment support cylinder (32) to rotate in order to adjust its preload on the rotating shaft (12); The adjusting support cylinder (32) is equipped with a compression sealing rod (35), and a plurality of first elastic support strips (36) are installed on the inner wall of the adjusting support cylinder (32). The first elastic support strips (36) are connected to the compression sealing rod (35). The compression sealing rod (35) passes through the fixing ring (22) and extends to one end of the fixing ring (22) where a supporting arc-shaped lubricating block (33) is installed. The supporting arc-shaped lubricating block (33) abuts against the rotating shaft (12). The lubrication ring (41) and The support ring (31) is connected, and the top of the lubrication ring (41) is equipped with an oil replenishment pipe (43). The top of the oil replenishment pipe (43) passes through the feedback ring (23) and extends to the outside of the feedback ring (23). The lubrication ring (41) is provided with a lubrication channel, and the lubrication channel is provided with lubricating oil. Multiple telescopic sleeves (42) are installed on the lubrication ring (41). The telescopic sleeves (42) are connected to the lubrication channel, and the telescopic sleeves (42) are connected to the support arc-shaped lubrication block (33).

2. The mold rotating turntable device as described in claim 1, characterized in that, The feedback component (2) includes a pair of connecting posts (21), with one end of the pair of connecting posts (21) being connected to a feedback ring (23) away from each other. The feedback ring (23) is mounted on the main body (1) of the mold rotating turntable, and a plurality of pressure sensors are mounted on the feedback ring (23). A fixing ring (22) is mounted on one end of the connecting post (21).

3. The mold rotating turntable device as described in claim 2, characterized in that, The support ring (31) is connected to the fixed ring (22) via a connecting rod. The top of the adjusting support cylinder (32) is provided with a connected feedback support cylinder (34), and the adjusting support cylinder (32) and the feedback support cylinder (34) are rotatably connected via a bearing. The adjusting support cylinder (32) is provided with a sealing groove, and a sealing ring is embedded in the sealing groove. The sealing ring is interference-fitted with the feedback support cylinder (34).

4. The mold rotating turntable device as described in claim 3, characterized in that, The feedback support cylinder (34) is equipped with a feedback sealing rod (37) and a plurality of second elastic support bars (38) are installed inside the feedback support cylinder (34). The second elastic support bars (38) are connected to the feedback sealing rod (37), and the feedback sealing rod (37) abuts against the pressure sensor.

5. The mold rotating turntable device as described in claim 1, characterized in that, The lubrication ring (41) is equipped with a first lubrication replenishment pipe (47) at its bottom end. The first lubrication replenishment pipe (47) is connected to the lubrication flow channel, and a plurality of lubrication nozzles are installed at the bottom end of the first lubrication replenishment pipe (47). The lubrication nozzles are connected to the rotating sleeve (13).

6. The mold rotating turntable device as described in claim 5, characterized in that, One end of the first lubrication replenishment pipe (47) is equipped with a compensation pipe (44) connected to it. A backflow prevention check valve is installed at the connection between the compensation pipe (44) and the first lubrication replenishment pipe (47). One end of the compensation pipe (44) is equipped with a compensation sealing cylinder (45) connected to it. A compensation sealing rod (46) is installed inside the compensation sealing cylinder (45). The compensation sealing cylinder (45) is connected to the uppermost feedback sealing rod (37).

7. The mold rotating turntable device as described in claim 6, characterized in that, The compensation sealing cylinder (45) is equipped with a reset check valve at its outer end, and multiple reset strips are installed inside the compensation sealing cylinder (45), the reset strips being connected to the compensation sealing rod (46).

8. The mold rotating turntable device as described in claim 1, characterized in that, The adjustment assembly (5) includes an electric slide rail (51), which is installed on one side of the lubrication ring (41). An electric slider (52) is installed inside the electric slide rail (51). A first electric push rod (53) is installed at the output end of the electric slider (52). A second electric push rod (54) is installed at the output end of the first electric push rod (53). An adjustment frame (55) is installed at the output end of the second electric push rod (54). A pair of electric rollers (56) are installed on the adjustment frame (55).

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