Intelligent buckling machine system of large three-plate mold and large three-plate mold

Abstract

The invention relates to the technical field of control or adjusting systems, three-plate-mold large molds and the like, and provides an intelligent buckling machine system of a three-plate-mold large mold and the three-plate-mold large mold. The buckling machine system comprises a lifting device installed above a mold base A plate and used for conducting lifting motion above the mold base A plate; the lifting stroke monitoring device is assembled on one side of the lifting device and used for monitoring the lifting stroke of the lifting device and controlling the lifting motion of the lifting device; the buckling machine assembly is detachably mounted on the upper surfaces of the mold base A plate and the mold base B plate; the buckling machine assembly is locked with the lifting device when the lifting device descends to a preset stroke, and the mold base plate A and the mold base plate B are locked; and the buckling machine assembly is separated from the locking connection with the lifting device when the lifting device ascends to a preset stroke, and the mold base plate A and the mold base plate B are unlocked. According to the intelligent buckling machine system, abrasion of the mold bases can be avoided, locking connection between the mold bases is dynamically adjusted, and the stability and reliability of an ultra-large mold in long-term continuous production are guaranteed.

Description

Technical Field

[0001] This invention relates to the technical fields of control or regulation systems, equipment used in conjunction with power supplies, and large three-plate molds, and particularly to an intelligent fastening system and a large three-plate mold. Background Technology

[0002] For large three-plate molds with clamping forces exceeding 1300 tons, the traditional method commonly uses a spring steel sheet clamping mechanism to achieve mold opening and closing locking. However, during long-term continuous production, this structure presents a series of significant technical problems: First, the spring steel sheets are prone to fatigue and stress relaxation under high temperature, high load, and frequent compression conditions, leading to a gradual decrease in preload and an inability to continuously provide a stable and effective clamping force. Second, due to insufficient clamping force, abnormal impacts and friction occur between the clamping mechanism and the mold blank during movement, causing continuous wear on the mold blank side and a gradual increase in the mating clearance. This not only reduces positioning accuracy but also causes product tearing due to uneven tension during mold opening, frequently interrupting production and increasing scrap rates and maintenance costs. Furthermore, traditional spring clamping mechanisms lack status monitoring and real-time control capabilities, making it impossible to effectively monitor and control the locking status between mold blanks, severely affecting the reliability, production efficiency, and service life of large molds.

[0003] Therefore, there is an urgent need for a new type of locking system that can avoid mold blank wear and dynamically adjust the locking between mold blanks, so as to overcome the inherent defects of the traditional pure mechanical spring structure and ensure the stability and reliability of ultra-large molds in long-term continuous production. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides an intelligent fastening system and a three-plate mold for large molds, which can prevent mold blank wear, dynamically adjust the locking between mold blanks, and ensure the stability and reliability of ultra-large molds in long-term continuous production.

[0005] In a first aspect, the present invention provides an intelligent fastening system for a three-plate mold large mold, comprising: A lifting device is installed above the mold plate A and is used to perform lifting and lowering movements above the mold plate A. A lifting stroke monitoring device is mounted on one side of the lifting device to monitor the lifting stroke of the lifting device and control the lifting movement of the lifting device. The fastening assembly is detachably installed on the upper surfaces of the mold plate A and the mold plate B; the fastening assembly locks with the lifting device when the lifting device descends to a preset stroke, locking the mold plate A and the mold plate B; the fastening assembly disengages from the lifting device when the lifting device rises to a preset stroke, unlocking the mold plate A and the mold plate B.

[0006] Secondly, the present invention provides a three-plate mold large mold, wherein the three-plate mold large mold uses the intelligent fastening system of the three-plate mold large mold described above.

[0007] Compared with the prior art, the beneficial effects of this invention are as follows: This invention provides an intelligent locking system and a three-plate mold for large molds. The intelligent locking system includes: a lifting device installed above mold blank A plate for lifting and lowering movement above mold blank A plate; a lifting stroke monitoring device mounted on one side of the lifting device for monitoring the lifting stroke and controlling the lifting movement of the lifting device; and a locking assembly detachably installed on the upper surfaces of mold blank A plate and mold blank B plate. The locking assembly engages with the lifting device when the lifting device descends to a preset stroke, locking mold blank A plate and mold blank B plate; and disengages from the lifting device when the lifting device rises to a preset stroke, unlocking mold blank A plate and mold blank B plate. This intelligent locking system can prevent mold blank wear, dynamically adjust the locking between mold blanks, and ensure the stability and reliability of ultra-large molds in long-term continuous production. Attached Figure Description

[0008] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. Some specific embodiments of the invention will be described in detail below with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings designate the same or similar parts or components. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic diagram of the intelligent fastening system of the large mold plate of the present invention when used on the mold blank; Figure 2 This is a schematic diagram of the intelligent fastening system for the large plate mold of the present invention, according to Embodiment 3. Figure 3 This is another structural schematic diagram of the intelligent fastening system of the large mold plate of the present invention when used on the mold blank; Figure 4 This is a partial structural diagram of the intelligent fastening system of the large mold plate of the present invention when used on the mold blank; Figure 5 This is a schematic diagram of a structure of mold plate A in an embodiment of the present invention; Figure 6 This is a schematic diagram of a fastening mechanism according to an embodiment of the present invention; Figure 7 This is another structural schematic diagram of the fastening mechanism according to an embodiment of the present invention.

[0009] Explanation of reference numerals in the attached figures: 1. Lifting device; 10. Cylinder bracket; 11. Cylinder mounting plate; 12. Cylinder body; 120. Cylinder tie rod; 121. Cylinder connecting block; 122. Cylinder positioning block; 2. Mold blank A plate; 20. A plate positioning groove; 201. Clearance limiting groove; 3. Lifting stroke monitoring device; 30. Stroke rod; 300. Stroke block; 31. Connecting rod; 32. Positioning block connector; 33. Monitoring head; 4. Fastening assembly; 40. Fastening mechanism; 401. Inter-plate fastening part; 4010. Positioning block limiting through hole; 4011. Positioning block limiting groove; 402. B plate fastening part; 4020. Concave arched surface; 41. A plate positioning block; 42. Countersunk screw; 43. Fastening positioning block; 5. Mold blank B plate; 50. Clamping part receiving groove; 501. Outwardly convex arched curved surface. Detailed Implementation

[0010] To enable those skilled in the art to better understand the present invention, the technical solutions of this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0011] Example 1

[0012] See Figures 1-7 This embodiment provides an intelligent fastening machine 40 system for a three-plate mold large mold. The intelligent fastening machine 40 system for the three-plate mold large mold includes: Lifting device 1, which is installed above mold plate A 2, is used to perform lifting and lowering movements above mold plate A 2; The lifting stroke monitoring device 3 is mounted on one side of the lifting device 1 and is used to monitor the lifting stroke of the lifting device 1 and control the lifting movement of the lifting device 1. The fastening assembly 4 is detachably installed on the upper surfaces of the mold plate A 2 and the mold plate B 5; the fastening assembly 4 locks with the lifting device 1 when the lifting device 1 descends to a preset stroke, thus locking the mold plate A 2 and the mold plate B 5; the fastening assembly 4 disengages from the lifting device 1 when the lifting device 1 rises to a preset stroke, thus unlocking the mold plate A 2 and the mold plate B 5.

[0013] In this embodiment, the lifting device 1 is installed above the mold blank A plate 2, and is used to perform lifting and lowering movements above the mold blank A plate 2. This avoids the fatigue and stress relaxation problems of traditional spring steel sheets under high temperature, high load, and frequent compression, and achieves stable and controllable lifting and lowering movements. This replaces the clamping mechanism that relies on spring steel sheets, ensuring the continuous effectiveness of the clamping force. The lifting stroke monitoring device 3 is mounted on one side of the lifting device 1, and is used to monitor the lifting stroke of the lifting device 1 and control the lifting and lowering movements of the lifting device 1. It can provide real-time status monitoring and control capabilities, solve the problem of lack of monitoring and real-time control in traditional clamping machines 40, achieve precise control of the lifting stroke, and prevent abnormal impacts, friction, and wear caused by preload decay or uneven locking. The fastening assembly 4 is detachably installed on the upper surfaces of the mold blank A plate 2 and the mold blank B plate 5. When the lifting device 1 descends to a preset stroke, the fastening assembly 4 locks with the lifting device 1, locking the mold blank A plate 2 and the mold blank B plate 5 tightly. When the lifting device 1 rises to a preset stroke, the fastening assembly 4 disengages from the lifting device 1, unlocking the mold blank A plate 2 and the mold blank B plate 5. This allows for dynamic adjustment of the locking state between the mold blanks, solving the problems of increased fit clearance, reduced positioning accuracy, and product tearing caused by insufficient clamping force in traditional structures. It achieves reliable and uniform locking and unlocking, reducing production interruptions, scrap rates, and maintenance costs, and improving the operational reliability, production efficiency, and service life of large molds. It should be noted that the locking assembly 4 is detachably installed on the upper surfaces of the mold plate A 2 and mold plate B 5, and works in conjunction with the lifting device 1 to lock and unlock the mold plates A 2 and B 5. During the entire locking process, the locking assembly 4 remains stationary and does not move relative to the mold plates A 2 and B 5, thus effectively preventing wear caused by movement of the locking assembly 4. Simultaneously, the lifting device 1 does not directly contact the mold plates A 2 and B 5, and its lifting movement will not impact them, effectively protecting the mold plates A 2 and B 5.

[0014] Preferably, the lifting device 1 includes a cylinder bracket 10 installed above the mold plate A 2, a cylinder mounting plate 11 fixed on the cylinder bracket 10, and a cylinder body 12 installed on the cylinder mounting plate 11; part of the structure of the cylinder body 12 passes through the cylinder mounting plate 11 and the cylinder bracket 10, and is locked or disengaged from the fastening assembly 4, so as to lock the mold plate A 2 and the mold plate B 5 or unlock the mold plate A 2 and the mold plate B 5.

[0015] In this embodiment, the lifting device 1 includes a cylinder bracket 10 mounted above the mold plate A 2, a cylinder mounting plate 11 fixed to the cylinder bracket 10, and a cylinder body 12 mounted on the cylinder mounting plate 11. A portion of the cylinder body 12 passes through the cylinder mounting plate 11 and the cylinder bracket 10, and is locked or detached from the locking assembly 4. This solves the problems of uncontrollable driving force, easy attenuation, and poor reliability when using traditional spring steel sheets as a power source, achieving a stable, powerful, and controllable power core using a hydraulic cylinder. The cylinder bracket 10 and the cylinder mounting plate 11 form a robust support frame, ensuring the rigidity and stability of the cylinder body 12 installation. It can withstand the enormous reaction force of over 1300 tons of clamping force, preventing deformation or displacement under high pressure, thus providing a solid foundation for the entire clamping process. Parts of the cylinder body 12 (such as the cylinder tie rod 120) pass directly through the cylinder mounting plate 11 and the cylinder bracket 10, and are locked or disengaged from the fastening assembly 4. This design can minimize and straighten the power transmission path, greatly improve transmission efficiency and accuracy, and solve the problems of large cumulative errors and slow response caused by long power transmission chains and many links. Ultimately, it achieves strong, precise and reliable control over the locking and unlocking actions of the mold plate A 2 and plate B.

[0016] Preferably, the cylinder body 12 includes a cylinder pull rod 120, a cylinder connecting block 121, and a cylinder positioning block 122; the cylinder pull rod 120 passes through the cylinder mounting plate 11 and the cylinder bracket 10 and is connected to the cylinder connecting block 121, and the cylinder connecting block 121 is connected to the cylinder positioning block 122; the cylinder pull rod 120 moves up and down vertically, driving the cylinder positioning block 122 to move up and down through the cylinder connecting block 121; the locking assembly 4 locks with the cylinder positioning block 122 when the cylinder positioning block 122 descends to a preset stroke, locking the mold plate A 2 and the mold plate B 5; the locking assembly 4 disengages from the cylinder positioning block 122 when the cylinder positioning block 122 rises to a preset stroke, unlocking the mold plate A 2 and the mold plate B 5.

[0017] In this embodiment, the cylinder body 12 includes a cylinder rod 120, a cylinder connecting block 121, and a cylinder positioning block 122. The cylinder rod 120 passes through the cylinder mounting plate 11 and the cylinder bracket 10 and connects to the cylinder connecting block 121. The cylinder connecting block 121 is connected to the cylinder positioning block 122. The cylinder rod 120 reciprocates vertically, driving the cylinder positioning block 122 to reciprocate vertically via the cylinder connecting block 121. This solves the problems of misalignment, uneven load, and unstable movement that may exist during power transmission, achieving modularization of the power component and high-precision guidance of motion. As the direct actuator of the cylinder, the cylinder rod 120's strict vertical reciprocating motion is guaranteed by the mechanical structure. The cylinder connecting block 121 plays a crucial role in connecting the upper and lower parts, reliably transmitting the linear motion of the cylinder rod 120 to the cylinder positioning block 122, and also has a certain adjustment and compensation function to ensure the alignment between the components. In this embodiment, the hydraulic cylinder positioning block 122 serves as the final actuating end that engages with the latching assembly 4. This design separates the power module (hydraulic cylinder rod 120) from the locking function module (hydraulic cylinder positioning block 122). The hydraulic cylinder positioning block 122 can be specially optimized according to the interface shape of the latching assembly 4 (e.g., by adding a wear-resistant coating or a specific geometry) without modifying the entire hydraulic cylinder, thereby improving the wear resistance and service life of the system. It also makes the replacement and maintenance of vulnerable parts more convenient and economical.

[0018] Preferably, the fastening assembly 4 includes a fastening mechanism 40 detachably mounted to the upper surface of the mold blank B plate 5 via a fastening positioning block 43, and an A plate positioning block 41 detachably mounted in the A plate positioning groove 20 on the upper surface of the mold blank A plate 2; a portion of the fastening mechanism 40 extends to the upper surface of the A plate positioning block 41 and contacts the A plate positioning block 41; the hydraulic cylinder positioning block 122 moves downward through the fastening mechanism 40 and the A plate positioning block 41 to lock the mold blank A plate 2 and the mold blank B plate 5. Specifically, the A plate positioning block 41 is connected to the pin hole in the A plate positioning groove 20 via a countersunk screw 42 to fix the A plate positioning block 41 to the upper surface of the mold blank A plate 2. Furthermore, when the hydraulic cylinder positioning block 122 moves downward through the buckle 40 and the A plate positioning block 41 to lock the mold blank A plate 2 and the mold blank B plate 5, it also enters the clearance limiting groove 201 provided in the A plate positioning groove 20. The hydraulic cylinder positioning block 122 entering the clearance limiting groove 201 does not directly contact the mold blank A plate 2.

[0019] In this embodiment, the fastening assembly 4 includes a fastener 40 detachably mounted to the upper surface of the mold plate B 5 via a fastening positioning block 43, and an A-plate positioning block 41 detachably mounted in the A-plate positioning groove 20 on the upper surface of the mold plate A 2. A portion of the fastener 40 extends to the upper surface of the A-plate positioning block 41 and contacts it. A hydraulic cylinder positioning block 122 moves downwards through the fastener 40 and the A-plate positioning block 41, locking the mold plate A 2 and the mold plate B 5. This solves the problems of uneven locking force distribution and difficulty in replacing worn components, achieving modularity, detachability, and optimized force distribution in the fastener 40 system. The fastening assembly 4 is decomposed into a fastener 40 mounted on the B plate and an A-plate positioning block 41 mounted on the A plate, connected by the hydraulic cylinder positioning block 122 passing through both. This allows the locking force to act directly and evenly on the components of the A and B plates through the hydraulic cylinder positioning block 122 bridge, avoiding single-point force or stress concentration.

[0020] It should also be noted that in this embodiment, the A-plate positioning block 41 is connected to the pin hole in the A-plate positioning groove 20 by countersunk screw 42. This achieves precise positioning (by the pin hole) and firm fixation (by the screw) of the A-plate positioning block 41, ensuring the accuracy of the position during locking.

[0021] It is also important to note that in this embodiment, the hydraulic cylinder positioning block 122 also penetrates into the clearance limiting groove 201 provided in the positioning groove 20 of the A plate, and does not directly contact the mold blank A plate 2. This design is extremely critical. It creates a micro-clearance fit, so that the huge locking force is entirely borne by the A plate positioning block 41, while the hydraulic cylinder positioning block 122 has no contact with the mother template (A plate) itself. This fundamentally solves the wear problem caused by direct contact and friction between the hydraulic cylinder positioning block 122 and the mother template, greatly extends the service life of the mold body, and reduces the maintenance cost of core components.

[0022] Preferably, the hydraulic cylinder positioning block 122 moves upward to disengage from the latch 40 and the A-plate positioning block 41, unlocking the mold blank A-plate 2 and mold blank B-plate 5. In this embodiment, the upward movement of the hydraulic cylinder positioning block 122 to disengage from the latch 40 and the A-plate positioning block 41, unlocking the mold blank A-plate 2 and mold blank B-plate 5, can solve the problem of incomplete unlocking or uneven mold opening force caused by wear and jamming, achieving a direct and reliable mechanical separation. This embodiment clarifies the unlocking mechanism: the power source (hydraulic cylinder) directly reverses its action, driving the actuator (hydraulic cylinder positioning block 122) to vertically withdraw from the locking components (latch 40 and A-plate positioning block 41) along a precise guide, thereby achieving complete disengagement of the mechanical connection. This cylinder-controlled unlocking method allows for precise adjustment of stroke and speed, ensuring that the locking force between the two plates is released synchronously, instantaneously, and completely each time the mold is opened. This effectively avoids the possibility that the traditional spring structure may become fatigued and unable to rebound properly, causing the buckling assembly 4 and the mold blank clamping side to experience pulling and sliding friction in the initial stage of mold opening. This effectively prevents wear on the mold blank side and product tearing, ensuring the smoothness and repeatability of the mold opening process.

[0023] Preferably, the fastening mechanism 40 includes an inter-plate fastening part 401 and a B-plate fastening part 402; the inter-plate fastening part 401 fastens the upper surface of the A-plate positioning block 41 and the upper surface of the mold blank B-plate 5, and the B-plate fastening part 402 fastens the side of the mold blank B-plate 5 to form a locking force in the direction of the mold blank A-plate 2. The inter-plate fastening part 401 can be installed on the upper surface of the mold blank B-plate 5 with screws.

[0024] In this embodiment, the fastening mechanism 40 includes a cross-plate fastening part 401 and a B-plate fastening part 402. The cross-plate fastening part 401 fastens the upper surface of the A-plate positioning block 41 and the upper surface of the mold blank B-plate 5, while the B-plate fastening part 402 fastens the side of the mold blank B-plate 5 to form a locking force towards the mold blank A-plate 2. This can solve the problems of a single locking force direction and unstable installation of the fastening mechanism 40, achieving multi-dimensional force constraint and stable positioning of the fastening mechanism 40 itself. In this embodiment, the function of the fastening mechanism 40 is subdivided: the cross-plate fastening part 401 is mainly responsible for vertical clamping, pressing the A-plate positioning block 41 (indirectly pressing the mold blank A-plate 2) and the upper surface of the mold blank B-plate 5, which clamps the two plates together in the vertical direction; while the B-plate fastening part 402 is responsible for horizontal locking, fastening the side of the B-plate. When locking, it generates a horizontal component force that pulls the B-plate towards the A-plate.

[0025] It is important to note that this embodiment achieves a combined locking force on the template in both vertical and horizontal directions through the single component of the clamping mechanism 40, simulating a clamp-like effect. This makes the connection between the two plates more stable and reliable, greatly enhancing the ability to resist template separation caused by injection pressure inside the mold. This design in this embodiment ensures a uniform distribution of clamping force, effectively preventing slight warping or displacement of the template that may occur due to unidirectional clamping, thereby improving the overall rigidity of the mold and the consistency of the molded product quality.

[0026] Preferably, the inter-plate clamping part 401 is provided with a positioning block limiting through hole 4010 and a positioning block limiting groove 4011, and the side of the mold blank B plate 5 is provided with a clamping part receiving groove 50; the positioning block limiting through hole 4010 is used to allow the hydraulic cylinder positioning block 122 to pass through and limit the up and down reciprocating motion of the hydraulic cylinder positioning block 122 when it moves up and down; the positioning block limiting groove 4011 is used to cover the top of the clamping machine positioning block 43 to limit the clamping machine positioning block 43; the clamping part receiving groove 50 is used to receive the B plate clamping part 402. Furthermore, the buckle positioning block 43 is a replaceable wear-resistant structure. The contact surface of the positioning block limiting groove 4011 that contacts the buckle positioning block 43 is provided with a hard coating or wear-resistant inserts are embedded in the positioning block limiting groove 4011 to contact the buckle positioning block 43. When the positioning block limiting groove 4011 contacts the buckle positioning block 43 to transmit the clamping force of the buckle 40, the buckle positioning block 43 and the relative positioning surface of the mold plate B 5 bear the reaction force. There is no direct frictional contact between the body of the buckle 40 and the upper surface of the mold plate B 5. The buckle positioning block 43 is fixed to the relative positioning surface of the mold plate B 5 by screws. Furthermore, the bottom of the clamping part receiving groove 50 includes an outwardly convex arched surface 501, and the bottom surface of the B plate clamping part 402 includes an inwardly concave arched surface 4020. When the clamping part receiving groove 50 accommodates the B plate clamping part 402, the inwardly concave arched surface 4020 of the B plate clamping part 402 adapts to cover the outwardly convex arched surface 501 of the clamping part receiving groove 50.

[0027] In this embodiment, the inter-plate clamping part 401 is provided with a positioning block limiting through hole 4010 and a positioning block limiting groove 4011, which can solve the problems of inaccurate movement of the hydraulic cylinder positioning block 122 and the unstable positioning of the clamping mechanism 40 itself, achieving precise guidance and stable load bearing. The positioning block limiting through hole 4010 provides a precise movement channel and radial limit for the hydraulic cylinder positioning block 122, ensuring that it can be accurately inserted into the positioning block 41 of plate A each time. The positioning block limiting groove 4011 is used to fix the clamping mechanism positioning block 43, thereby indirectly and firmly fixing the clamping mechanism 40 itself to plate B.

[0028] It should also be noted that in this embodiment, the buckle positioning block 43 is a replaceable wear-resistant structure with a hard coating or wear-resistant inserts. This directly concentrates wear on a small, replaceable component, effectively solving the problem of high overall replacement costs and achieving economical maintenance. Furthermore, the buckle positioning block 43 and the mold plate B 5 bear the reaction force through their relative positioning surfaces, preventing direct frictional contact between the buckle 40 body and the upper surface of the mold plate B 5. This core design separates the load-bearing surface from the mounting surface, avoiding wear between the buckle 40 body and the B plate, protecting the expensive mold body. All friction and wear occur on the replaceable wear-resistant block.

[0029] It should also be noted that in this embodiment, the bottom of the clamping part receiving groove 50 includes an outwardly convex arched curved surface 501, and the bottom surface of the receiving B-plate clamping part 402 includes an inwardly concave arched curved surface 4020, thereby forming an arched curved surface adaptation design structure. This structure allows the B-plate clamping part 402 to have a small self-adjusting range within the receiving groove, which can better adapt to processing errors or thermal expansion. At the same time, the curved surface contact can withstand greater compressive stress and the stress distribution is more uniform than the planar contact, further improving the reliability and lifespan of the system.

[0030] Preferably, the lifting stroke monitoring device 3 includes a stroke rod 30 located on one side of the cylinder bracket 10, a connecting rod 31 connected to the stroke rod 30, a positioning block connector 32 disposed on the connecting rod 31, and a monitoring head 33 fixed on one side of the cylinder bracket 10; the stroke rod 30 is installed on one side of the cylinder mounting plate 11, the stroke rod 30 and the connecting rod 31 intersect perpendicularly and the length direction is vertical, the connecting rod 31 extends toward the side of the cylinder body 12, the positioning block connector 32 is close to the cylinder body 12 and connected to the cylinder positioning block 122 of the cylinder body 12, when the cylinder body 12 moves up and down, it drives the stroke rod 30 to move up and down; stroke blocks 300 are fixed at intervals on the rod body of the stroke rod 30, the stroke blocks 300 move up and down with the stroke rod 30, and the monitoring head 33 monitors the approach or departure of the stroke blocks 300 and sends a control signal for up and down movement to the cylinder body 12.

[0031] In this embodiment, the lifting stroke monitoring device 3 includes a stroke rod 30 located on one side of the cylinder bracket 10, a connecting rod 31 connected to the stroke rod 30, a positioning block connector 32 disposed on the connecting rod 31, and a monitoring head 33 fixed on one side of the cylinder bracket 10. The stroke rod 30 is installed on one side of the cylinder mounting plate 11, and the positioning block connector 32 is close to the cylinder body 12 and connected to the cylinder positioning block 122 of the cylinder body 12. When the cylinder body 12 moves up and down, it drives the stroke rod 30 to move up and down. Stroke blocks 300 are fixed at intervals on the rod body of the stroke rod 30. The stroke blocks 300 move up and down with the stroke rod 30. The monitoring head 33 monitors the approach or departure of the stroke blocks 300. This can solve the problems of high reliability, stability, and cost that may exist in non-contact sensing systems under harsh mold working conditions such as high temperature and oil contamination, and realize a robust, durable, anti-interference, and cost-effective stroke monitoring solution. This embodiment establishes a follow-up mechanism (composed of positioning block connector 32, connecting rod 31, and stroke rod 30) that is mechanically rigidly connected to the cylinder positioning block 122, so that the displacement of the stroke rod 30 is completely synchronized with the displacement of the cylinder positioning block 122, ensuring the absolute authenticity and reliability of the monitoring benchmark.

[0032] It should also be noted that in this embodiment, the stroke blocks 300 act as physical triggers, directly reflecting the absolute position of the hydraulic cylinder without intermediate conversion. The monitoring head 33 determines whether the hydraulic cylinder has reached the two key preset positions (locked and unlocked positions) by detecting the arrival of the stroke blocks 300. This mechanical triggering mechanism has a simple structure, low environmental requirements, and is not easily affected by typical mold working conditions such as hydraulic oil leakage, metal dust, and high temperature, providing extremely high stability and reliability, making it suitable for long-term continuous production in industrial settings.

[0033] Preferably, there are two stroke blocks 300, defined as an upper limit stroke block 300 and a lower limit stroke block 300, respectively corresponding to the preset upward stroke and preset downward stroke of the cylinder positioning block 122; the monitoring head 33 is a contact limit switch or a proximity switch; when the upper limit stroke block 300 moves with the stroke rod 30 to trigger the monitoring head 33, the monitoring head 33 sends a control signal to the cylinder body 12 to stop rising or start falling; when the lower limit stroke block 300 moves with the stroke rod 30 to trigger the monitoring head 33, the monitoring head 33 sends a control signal to the cylinder body 12 to stop falling or start rising.

[0034] In this embodiment, there are two stroke blocks 300, defined as an upper limit stroke block 300 and a lower limit stroke block 300, corresponding to the preset upward and downward strokes of the hydraulic cylinder positioning block 122, respectively. The monitoring head 33 is a contact limit switch or a proximity switch. When the upper limit stroke block 300 moves with the stroke rod 30 to trigger the monitoring head 33, the monitoring head 33 sends a control signal to the hydraulic cylinder body 12 to stop rising or start falling. When the lower limit stroke block 300 moves with the stroke rod 30 to trigger the monitoring head 33, the monitoring head 33 sends a control signal to the hydraulic cylinder body 12 to stop falling or start rising. This solves the problem of how to accurately and reliably convert mechanical displacement into control commands, realizing a two-way closed-loop control logic based on hard limits, ensuring that locking and unlocking actions are accurate every time. Clearly dividing the two stroke blocks 300 into upper and lower limits, corresponding to the two core states of the system, makes the control logic clear, simple, and extremely reliable. The monitoring head 33 uses either a contact limit switch or a proximity switch, providing a flexible option: contact switches are extremely low-cost and highly reliable; non-contact proximity switches are wear-free and have a longer lifespan.

[0035] It is also important to note that in this embodiment, the system not only passively stops at the endpoint but can also actively send control signals to stop or begin the next action. For example, when the upper limit stroke block 300 triggers the monitoring head 33, this not only signifies complete unlocking, but the signal emitted by the monitoring head 33 can also be used to directly stop the rising cylinder to prevent overshoot; simultaneously, this signal can also serve as a starting condition for beginning the next mold closing and locking cycle, triggering the cylinder to begin descending. Conversely, triggering the lower limit stroke block 300 signifies complete locking and triggers subsequent processes such as stopping descent or initiating pressure holding.

[0036] Example 2

[0037] See Figures 1-7This invention also provides a three-plate mold large mold, which uses the intelligent clamping machine 40 system of the three-plate mold large mold in any of the above embodiments. In this intelligent clamping machine 40 system, the lifting device 1 is installed above the mold blank A plate 2, and is used to perform lifting and lowering movements above the mold blank A plate 2. This can avoid the fatigue and stress relaxation problems of traditional spring steel sheets under high temperature, high load and frequent compression, and achieve stable and controllable lifting and lowering movements, thereby replacing the clamping mechanism that relies on spring steel sheets and ensuring the continuous effectiveness of the clamping force. The lifting stroke monitoring device 3 is mounted on one side of the lifting device 1, and is used to monitor the lifting stroke of the lifting device 1 and control the lifting and lowering movements of the lifting device 1. It can provide real-time status monitoring and control capabilities, solve the problem of lack of monitoring and real-time control in traditional clamping machines 40, achieve precise control of the lifting stroke, and prevent abnormal impacts, friction and wear caused by preload decay or uneven locking. The fastening assembly 4 is detachably installed on the upper surfaces of the mold blank A plate 2 and the mold blank B plate 5. When the lifting device 1 descends to a preset stroke, the fastening assembly 4 locks with the lifting device 1, locking the mold blank A plate 2 and the mold blank B plate 5 tightly. When the lifting device 1 rises to a preset stroke, the fastening assembly 4 disengages from the lifting device 1, unlocking the mold blank A plate 2 and the mold blank B plate 5. This allows for dynamic adjustment of the locking state between the mold blanks, solving the problems of increased fit clearance, reduced positioning accuracy, and product tearing caused by insufficient clamping force in traditional structures. It achieves reliable and uniform locking and unlocking, reducing production interruptions, scrap rates, and maintenance costs, and improving the operational reliability, production efficiency, and service life of large molds. It should be noted that the locking assembly 4 is detachably installed on the upper surfaces of the mold plate A 2 and mold plate B 5, and works in conjunction with the lifting device 1 to lock and unlock the mold plates A 2 and B 5. During the entire locking process, the locking assembly 4 remains stationary and does not move relative to the mold plates A 2 and B 5, thus effectively preventing wear caused by movement of the locking assembly 4. Simultaneously, the lifting device 1 does not directly contact the mold plates A 2 and B 5, and its lifting movement will not impact them, effectively protecting the mold plates A 2 and B 5.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent fastening system for a three-plate mold large mold, characterized in that, include: A lifting device is installed above the mold plate A and is used to perform lifting and lowering movements above the mold plate A. A lifting stroke monitoring device is mounted on one side of the lifting device to monitor the lifting stroke of the lifting device and control the lifting movement of the lifting device. The fastening assembly is detachably installed on the upper surfaces of the mold plate A and the mold plate B; the fastening assembly locks with the lifting device when the lifting device descends to a preset stroke, locking the mold plate A and the mold plate B; the fastening assembly disengages from the lifting device when the lifting device rises to a preset stroke, unlocking the mold plate A and the mold plate B.

2. The intelligent fastening system for a three-plate mold large mold as described in claim 1, characterized in that, The lifting device includes a cylinder bracket installed above the mold plate A, a cylinder mounting plate fixed on the cylinder bracket, and a cylinder body installed on the cylinder mounting plate; part of the cylinder body passes through the cylinder mounting plate and the cylinder bracket, and is locked or disengaged from the fastening assembly to lock the mold plate A and the mold plate B or to unlock the mold plate A and the mold plate B.

3. The intelligent fastening system for a three-plate mold large mold as described in claim 2, characterized in that, The main body of the hydraulic cylinder includes a hydraulic cylinder rod, a hydraulic cylinder connecting block, and a hydraulic cylinder positioning block. The hydraulic cylinder rod passes through the hydraulic cylinder mounting plate and the hydraulic cylinder bracket and connects to the hydraulic cylinder connecting block, which in turn connects to the hydraulic cylinder positioning block. The hydraulic cylinder rod moves up and down vertically, driving the hydraulic cylinder positioning block to move up and down via the hydraulic cylinder connecting block. When the hydraulic cylinder positioning block descends to a preset stroke, the locking assembly engages with it, locking mold plate A and mold plate B. When the hydraulic cylinder positioning block rises to a preset stroke, the locking assembly disengages from the locking assembly, unlocking mold plate A and mold plate B.

4. The intelligent fastening system for a three-plate mold large mold as described in claim 3, characterized in that, The fastening assembly includes a fastener that is detachably mounted to the upper surface of mold plate B via a fastening positioning block, and an A-plate positioning block that is detachably mounted in an A-plate positioning groove on the upper surface of mold plate A; a portion of the fastener's structure extends to the upper surface of the A-plate positioning block and contacts the A-plate positioning block; the hydraulic cylinder positioning block moves downward through the fastener and the A-plate positioning block to lock mold plate A and mold plate B.

5. The intelligent fastening system for a three-plate mold large mold as described in claim 4, characterized in that, The hydraulic cylinder positioning block moves upward to disengage from the latch and the A-plate positioning block, thus unlocking the mold blank A plate and mold blank B plate.

6. The intelligent fastening system for a three-plate mold large mold as described in claim 4, characterized in that, The fastening mechanism includes an inter-plate fastening part and a B-plate fastening part; the inter-plate fastening part fastens the upper surface of the A-plate positioning block and the upper surface of the mold blank B-plate, and the B-plate fastening part fastens the side of the mold blank B-plate to form a locking force in the direction of the mold blank A-plate.

7. The intelligent fastening system for a three-plate mold large mold as described in claim 6, characterized in that, The inter-plate clamping part is provided with a positioning block limiting through hole and a positioning block limiting groove, and the side of the mold blank B plate is provided with a clamping part receiving groove; the positioning block limiting through hole is used to allow the hydraulic cylinder positioning block to pass through and limit the up and down reciprocating motion of the hydraulic cylinder positioning block; the positioning block limiting groove is used to cover the top of the clamping machine positioning block to limit the clamping machine positioning block; the clamping part receiving groove is used to accommodate the B plate clamping part.

8. The intelligent fastening system for a three-plate mold large mold as described in claim 2, characterized in that, The lifting stroke monitoring device includes a stroke rod located on one side of the cylinder bracket, a connecting rod connected to the stroke rod, a positioning block connector set on the connecting rod, and a monitoring head fixed on one side of the cylinder bracket. The stroke rod is installed on one side of the cylinder mounting plate, and the stroke rod and the connecting rod intersect perpendicularly with the length direction being vertical. The connecting rod extends towards one side of the cylinder body. The positioning block connector is close to the cylinder body and connected to the cylinder positioning block of the cylinder body. When the cylinder body moves up and down, it drives the stroke rod to move up and down. Stroke blocks are fixed at intervals on the stroke rod. The stroke blocks move up and down with the stroke rod. The monitoring head monitors the approach or departure of the stroke blocks and sends a control signal for up and down movement to the cylinder body.

9. The intelligent fastening system for a three-plate mold large mold as described in claim 8, characterized in that, The number of stroke blocks is two, defined as the upper limit stroke block and the lower limit stroke block, respectively corresponding to the preset upward stroke and preset downward stroke of the cylinder positioning block; the monitoring head is a contact limit switch or proximity switch; when the upper limit stroke block moves with the stroke rod to trigger the monitoring head, the monitoring head sends a control signal to the cylinder body to stop rising or start falling; when the lower limit stroke block moves with the stroke rod to trigger the monitoring head, the monitoring head sends a control signal to the cylinder body to stop falling or start rising.

10. A three-plate mold, characterized in that, The three-plate mold large mold uses the intelligent fastening system for the three-plate mold large mold as described in any one of claims 1-9.

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