A safe and reliable mold lifting and overturning mechanism

Abstract

The utility model discloses a safe and reliable lift and overturn mechanism of mould, including lift mould fixed frame, be equipped with lift mould fixed frame and be equipped with lift mould and overturn seat, be equipped with lift mould and overturn seat both sides respectively and each lift mould overturn oil cylinder, the cylinder body of lift mould overturn oil cylinder is fixed on lift mould fixed frame, one limit device is equipped with in one side of lift mould fixed frame, the limit device includes the bolt cylinder fixed on lift mould fixed frame, the safety bolt of being equipped with in bolt cylinder output and the bolt guide seat of being equipped on safety bolt, bolt guide seat is fixedly connected with lift mould fixed frame, one limit hole of cooperation safety bolt of limit device is equipped with on lift mould and overturn seat, the limit hole is used to cooperate safety bolt and limit the rotation of lift mould and overturn seat, the utility model discloses directly limit the rotation freedom degree of lift mould and overturn seat through limit device, prevents the risk of mould damage and personnel injury.

Description

Technical Field

[0001] This utility model relates to the technical field of mold lifting and flipping mechanisms, specifically a safe and reliable mold lifting and flipping mechanism. Background Technology

[0002] Existing mold-flipping technology has formed a mature application system with hydraulic drive and mechanical transmission as its core. It realizes the flipping and lifting operation of molds through a single oil cylinder or linkage mechanism. It has the advantages of simple structure, low cost and convenient operation. In conventional production scenarios, it effectively replaces manual handling, improves production efficiency and automation level. At the same time, its standardized design meets the general needs of demolding and transferring basic workpieces, making it an important tool for small and medium-sized manufacturing enterprises to improve production capacity.

[0003] Existing technologies suffer from weak safety protection mechanisms. Traditional equipment often relies on a single hydraulic lock or friction brake, lacking physical limit protection. This makes it susceptible to over-twisting, retraction, or accidental falls due to external impacts, system failures, or vibrations, posing risks of mold damage and personal injury. Furthermore, the lifting displacement and tilting angle depend on manual experience or simple sensors, lacking precise stroke feedback and control. This often results in problems such as mold clamping offset and inaccurate positioning, affecting product quality stability. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a safe and reliable mold lifting and tilting mechanism. A limiting device including a pin cylinder, a safety pin, and a pin guide seat is integrated on one side of the mold fixing frame. The pin guide seat ensures that after tilting to the correct position, the guide hole and the limiting hole form a conductive channel. The safety pin is inserted under the drive of the cylinder to form a physical limit. This effectively solves the safety hazards of traditional technologies relying on single hydraulic locking or friction braking, which are prone to over-tilting, retraction, or accidental fall due to external impact or system failure. The mechanical protection mechanism directly restricts the degree of freedom of the tilting seat's rotation, preventing mold damage and personnel injury risks. A first resistance ruler is installed at the hinge between the mold lifting tilting seat and the tilting cylinder to control the tilting action, and a second resistance ruler is installed between the stabilizing plate and the auxiliary clamping plate to control the lifting action. This solves the problem of traditional technologies relying on manual experience or simple sensors, which can lead to displacement and... To address the issue of angle control deviation, the flipping seat achieves precise adjustment of the flipping angle and lifting displacement, improving product quality stability. It comprises a rigid frame structure consisting of a first flipping plate, a second flipping plate, a reinforcing plate, and auxiliary clamping components. Four sets of sliding bushings are arranged in a square on the reinforcing plate. The lifting shafts pass through the bushings and are rigidly connected via a stabilizing plate, enabling synchronous movement of all lifting shafts. Combined with the main clamping plate, the precise fit between the locating pin and the mold locating hole, and the clamping space formed with the auxiliary clamping plate, it effectively solves the defects of insufficient torsional strength and easy mold displacement in traditional structures. This enhances the overall torsional strength and flipping stability of the flipping seat, ensuring stable clamping of the mold during lifting or flipping. The synchronous operation of two hydraulic cylinders converts the thrust into a uniform flipping torque to drive the flipping seat to rotate, solving the problems of uneven force and unstable flipping that may exist with single-cylinder or linkage mechanisms. This improves the smoothness of the flipping action and ensures the reliability of safe mold release and flipping.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A safe and reliable mold lifting and tilting mechanism includes a mold fixing frame, on which a mold lifting and tilting seat is provided. A mold tilting cylinder is provided on each side of the mold lifting and tilting seat. The cylinder body of the mold tilting cylinder is connected to the mold fixing frame via a rotating seat. The mold fixing frame connects to the mold lifting and tilting seat. The mold lifting and tilting seat is used to clamp the upper mold and disengage it from the lower mold for tilting. The mold tilting cylinder drives the mold lifting and tilting seat to rotate relative to the mold fixing frame to achieve mold tilting. The mold-flipping action includes a limiting device on one side of the mold-flipping fixing frame. This limiting device is used to limit the mold-flipping lifting and flipping seat after it has been flipped into place. The limiting device includes a pin cylinder fixed on the mold-flipping fixing frame, a safety pin at the output end of the pin cylinder, and a pin guide seat sleeved on the safety pin. The pin guide seat is fixedly connected to the mold-flipping fixing frame. The mold-flipping lifting and flipping seat is provided with a limiting hole that cooperates with the safety pin of the limiting device. The limiting hole is used to cooperate with the safety pin to limit the rotation of the mold-flipping lifting and flipping seat.

[0006] The pin cylinder includes a cylinder body and a cylinder shaft. The cylinder shaft is inserted into the connection hole at one end of the safety pin to complete the limiting connection. The pin guide seat is provided with a guide hole, which is used to cooperate with the pin cylinder to drive the extension and retraction of the safety pin.

[0007] The height of the pin guide seat is the same as the assembly gap between the mold lifting and tilting seat and the mold lifting and tilting seat. After the mold lifting and tilting seat completes its tilting, the guide hole of the pin guide seat and the limit hole of the mold lifting and tilting seat form a channel for the safety pin to move, ensuring that the safety pin can be smoothly inserted into the limit hole.

[0008] The mold lifting fixing frame includes fixing plates on both sides of the mold lifting and tilting seat, a fixing shaft between the two fixing plates, a secondary fixing bracket on one side of the two fixing plates, and a hydraulic cylinder mounting plate on each of the two fixing plates. The secondary fixing bracket is used to adapt to the connection equipment.

[0009] The mold lifting and flipping seat includes a flipping seat rotatably connected to the fixed shaft and a lifting seat sleeved on the flipping seat via a sliding shaft. The lifting seat is used to cooperate with the flipping seat to lift the upper mold and clamp and limit it. The flipping seat is used to cooperate with the mold flipping cylinder to flip the lifting seat.

[0010] A mold-lifting cylinder is provided between the flipping seat and the lifting seat. The mold-lifting cylinder is used to drive the lifting seat to move vertically relative to the flipping seat.

[0011] The flipping seat includes a first flipping plate sleeved on the fixed shaft, a second flipping plate provided on one side relative to the first flipping plate, a reinforcing plate provided between the first flipping plate and the second flipping plate, and an auxiliary clamping member provided below the reinforcing plate.

[0012] The lifting seat includes a lifting shaft passing through the sliding bushing, a stabilizing plate located at one end of the lifting shaft, and a main clamping plate located at the other end of the lifting shaft.

[0013] The auxiliary clamping component includes two connecting plates located below the reinforcing plate and a secondary clamping plate located between the two connecting plates.

[0014] The main clamping plate is provided with a positioning pin, which is used to position the mold.

[0015] The beneficial effects of this utility model are as follows: 1. By setting a limiting device including a pin cylinder, a safety pin, and a pin guide seat on one side of the mold lifting frame, and the height of the pin guide seat is consistent with the assembly gap size of the mold lifting frame and the mold lifting and tilting seat, when the mold lifting and tilting seat is tilted into place, the guide hole of the pin guide seat and the limiting hole of the mold lifting and tilting seat form a conductive channel. The safety pin is inserted into the limiting hole under the drive of the pin cylinder to form a physical limit, thus achieving the effect of directly limiting the degree of freedom of the tilting seat to rotate through a mechanical protection mechanism and preventing mold damage and personnel injury risks. 2. By setting a first resistance ruler between the hinge of the mold lifting and tilting seat and the mold tilting cylinder to control the action of the mold tilting cylinder, and setting a second resistance ruler between the stabilizing plate and the auxiliary clamping plate to control the action of the mold lifting cylinder, the effect of precise adjustment of the tilting angle and lifting displacement of the mold lifting and tilting seat is achieved by controlling the stroke of the resistance ruler. 3. The flipping seat is composed of a first flipping plate, a second flipping plate, a reinforcing plate, and auxiliary clamping components, forming a rigid frame structure. Four sets of sliding bushings are arranged in a square on the reinforcing plate, and the lifting shaft passes through the sliding bushings and is rigidly connected to the stabilizing plate to achieve synchronous movement. The main clamping plate cooperates with the mold positioning hole through the positioning pin and forms a clamping space with the auxiliary clamping plate, thereby enhancing the overall torsional strength and flipping stability of the flipping seat and ensuring stable clamping of the mold during lifting or flipping. 4. By using two lifting mold tilting cylinders to work synchronously, the thrust is converted into a tilting torque to drive the tilting seat to rotate. This solves the problems of uneven force and unstable tilting that may exist in traditional single cylinder or linkage mechanism drives. It achieves the effects of improving the stability of the tilting action, ensuring the safe separation of the upper mold from the lower mold, and the precise tilting of the upper mold. Attached Figure Description

[0016] Figure 1 This is the front view of this utility model.

[0017] Figure 2 This is one of the side views of this utility model.

[0018] Figure 3 This is the second side view of this utility model.

[0019] Figure 4 This is the front view of the mold fixing bracket of this utility model.

[0020] Figure 5 This is a side view of the mold-lifting fixing bracket of this utility model.

[0021] Figure 6 This is the front view of the mold lifting and flipping seat of this utility model.

[0022] Figure 7 This is a side view of the mold lifting and flipping seat and the mold flipping cylinder of this utility model.

[0023] Figure 8 This is the front view of the lifting cylinder for mold lifting according to this utility model.

[0024] Figure 9 yes Figure 1 Enlarged view of the limiting device at point A.

[0025] Figure 10 This is a plan view of the limiting device of this utility model.

[0026] Explanation of icon numbers: 1-Mold lifting fixing frame, 10-Fixing plate, 11-Fixing shaft, 12-Secondary fixing bracket, 13-Hydraulic cylinder mounting plate, 2-Mold lifting and tilting seat, 20-Tilting seat, 200-First tilting plate, 2000-Limiting hole, 201-Second tilting plate, 202-Reinforcing plate, 203-Auxiliary clamping parts, 2030-Connecting plate, 2031-Secondary clamping plate, 21-Lifting seat, 210-Sliding bushing, 211-Lifting shaft, 212-Stabilizing plate, 2 13-Main clamping plate, 2130-Positioning pin, 3-Mold lifting cylinder, 30-Cylinder, 31-Telescopic shaft, 4-Mold flipping cylinder, 40-Cylinder body, 41-Cylinder shaft, 42-Hinge, 43-Rotating seat, 5-First resistance ruler, 6-Second resistance ruler, 7-Limiting device, 70-Pin cylinder, 700-Cylinder shaft, 701-Cylinder body, 71-Safety pin, 710-Connecting hole, 72-Pin guide seat, 720-Guide hole. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-10As shown, this utility model relates to a safe and reliable mold lifting and flipping mechanism, including a mold fixing frame 1, on which a mold lifting and flipping seat 2 is provided. A mold flipping cylinder 4 is provided on each side of the mold lifting and flipping seat 2. The cylinder body 40 of the mold flipping cylinder 4 is connected to the mold fixing frame 1 via a rotating seat 43. The mold fixing frame 1 is used to connect the mold lifting and flipping seat 2. The mold lifting and flipping seat 2 is used to clamp the upper mold and flip it after it is detached from the lower mold. The mold flipping cylinder 4 is used to drive the mold lifting and flipping seat 2 to rotate relative to the mold fixing frame 1 to achieve the mold lifting action. The mold fixing frame 1 includes components located on both sides of the mold lifting and flipping seat 2. The system includes a fixed plate 10, a fixed shaft 11 between the two fixed plates 10, a secondary fixed bracket 12 on one side of the two fixed plates 10, and a cylinder mounting plate 13 below each of the two fixed plates 10. The secondary fixed bracket 12 is used to adapt and connect equipment. A limiting device 7 is provided on one side of the mold lifting and tilting frame 1. The limiting device 7 is used to limit the tilting and tilting seat 2 after it is tilted into place. The limiting device 7 includes a pin cylinder 70 fixed on the mold lifting and tilting frame 1, a safety pin 71 at the output end of the pin cylinder 70, and a pin guide seat 72 sleeved on the safety pin 71. The pin guide seat 72 is fixedly connected to the mold lifting and tilting frame 1. The rotating base 2 is provided with a limiting hole 2000 that cooperates with the safety pin 71 of the limiting device 7. The limiting hole 2000 is used to restrict the rotation of the mold lifting and tilting base 2 in cooperation with the safety pin 71. The pin cylinder 70 is used to drive the safety pin 71 to extend or retract along the guide hole 720 of the pin guide seat 72 by driving the cylinder shaft 700, thereby controlling the locking and releasing state of the limiting device 7. The safety pin 71 is used to be inserted into the preset limiting hole 2000 of the mold lifting and tilting base 2 under the drive of the pin cylinder 70. The pin cylinder 70 includes a cylinder body 701 and a cylinder shaft 700. The cylinder shaft 700 is inserted into the connecting hole 710 at one end of the safety pin 71. The pin guide seat 72 is provided with a guide hole 720, which is used to cooperate with the pin cylinder 70 to drive the extension and retraction of the safety pin 71. The height of the pin guide seat 72 is the same as the assembly gap between the mold lifting and tilting seat 1 and the mold lifting and tilting seat 2. When the mold lifting and tilting seat 2 is tilted into place, the guide hole 720 of the pin guide seat 72, the through hole on the fixing plate 10 and the limiting hole 2000 of the mold lifting and tilting seat 2 form a guiding channel for the safety pin 71 to move, ensuring that the safety pin 71 can be smoothly inserted into the limiting hole 2000. The rotational freedom of the mold lifting and tilting seat 2 after being tilted into place is directly restricted by physical limiting.The pin guide seat 72 provides a precise movement path for the safety pin 71 through its built-in guide hole 720, ensuring that the safety pin 71 can be inserted into the limiting hole 2000 without obstruction to complete the limiting action. Through the cooperation of cylinder drive, pin limiting, and guide positioning, a mechanical protection mechanism is formed after the mold lifting and tilting seat 2 completes the tilting action. The limiting is achieved by the active control of the pin cylinder 70, and the physical guidance of the pin guide seat 72 ensures accurate limiting. This prevents the tilting seat 20 from over-tilting or retracting due to gravity, vibration, external impact, or system failure, ensuring the safety and reliability of the mold lifting operation.

[0028] like Figure 1-3 As shown, the mold lifting and tilting base 2 includes a tilting base 20 rotatably connected to a fixed shaft 11 and a lifting base 21 disposed on the tilting base 20 via a sliding bushing 210. The lifting base 21 is used to cooperate with the tilting base 20 to lift the upper mold and clamp and limit its movement. The tilting base 20 is used to cooperate with the mold tilting cylinder 4 to tilt the lifting base 21. A mold lifting cylinder 3 is provided between the tilting base 20 and the lifting base 21. The mold lifting cylinder 3 is used to drive the lifting base 21 to move vertically relative to the tilting base 20.

[0029] like Figure 1-10As shown, the flip base 20 includes a first flip plate 200 sleeved on the fixed shaft 11, a second flip plate 201 disposed on one side opposite to the first flip plate 200, a reinforcing plate 202 disposed between the first flip plate 200 and the second flip plate 201, and an auxiliary clamping member 203 disposed below the reinforcing plate 202. The auxiliary clamping member 203 includes two connecting plates 2030 disposed below the reinforcing plate 202 and a secondary clamping plate 2031 disposed between the two connecting plates 2030. The lifting seat 21 includes a lifting shaft 211 passing through the sliding bushing 210, a stabilizing plate 212 located at one end of the lifting shaft 211, and a main clamping plate 213 located at the other end of the lifting shaft 211. Specifically, four sets of sliding bushings 210 are arranged in a square on the reinforcing plate 202, and a lifting shaft 211 passes through each sliding bushing 210. One end of each set of lifting shafts 211 is rigidly connected to the stabilizing plate 212 by bolts. Two sets of lifting shafts 211 that are consistent with the length direction of the first flip plate 200 are simultaneously fixedly connected to a main clamping plate 213. This means that a set of main clamping plates 213 is arranged on each side of the auxiliary clamping plate 2031, and the two ends of the upper mold are clamped by the two main clamping plates 213 respectively.The main clamping plate 213 is provided with a positioning pin 2130, which is used to position the clamping position of the mold. The first flipping plate 200 is used to rotatably cooperate with the fixed shaft 11 to form a flipping fulcrum, and is connected to the cylinder shaft 41 of the mold flipping cylinder 4 through the hinge 42, converting the cylinder thrust into a flipping torque to drive the entire flipping seat 20 to rotate. The second flipping plate 201 is symmetrically arranged with the first flipping plate 200. The reinforcing plate 202 is used to connect the first flipping plate 200 and the second flipping plate 201 to form a stable rigid frame structure, enhancing the overall torsional strength and flipping stability of the flipping seat 20, and providing a mounting base for the sliding bushing 210 to ensure the structural rigidity of the lifting seat 21 when it moves vertically. The auxiliary clamping member 203 is used to support the secondary clamping plate 2031 through the two connecting plates 2030 to form an auxiliary clamping surface for the mold, which cooperates with the main clamping plate 213 to limit the mold. The connecting plate 2030 is used to fix the reinforcing plate 202. The auxiliary clamping plate 2031 bears the compressive force during mold clamping. This auxiliary clamping plate 2031 works in conjunction with the main clamping plate 213, which uses positioning pins 2130 to precisely position and smoothly lift the mold, preventing displacement during lifting or flipping. The lifting shaft 211 passes through the sliding bushing 210 to form a sliding pair, driving the stabilizing plate 212 and the main clamping plate 213 vertically under the drive of the mold lifting cylinder 3, thus lifting and lowering the mold. The stabilizing plate 212 is rigidly connected to the ends of the four sets of lifting shafts 211 via bolts, forming the overall force-bearing surface of the lifting seat 21, ensuring synchronous movement of each lifting shaft 211 during lifting. The main clamping plate 213 forms a clamping space with the auxiliary clamping plate 2031, ensuring stable clamping of the mold during mold lifting. The rotation of the flipping seat 20 and the vertical movement of the lifting seat 21 work together to achieve the complete action of safely detaching the upper mold from the lower mold, stable clamping, and precise flipping.

[0030] like Figure 1-10As shown, in this embodiment, specifically, the cylinder body 40 of the lifting and tilting cylinder 4 is rotatably connected to each cylinder mounting plate 13 via a rotating seat. One end of its cylinder shaft 41 is rotatably connected to the first tilting plate 200 and the second tilting plate 201 via a hinge 42. The aforementioned limiting hole 2000 is provided on the first tilting plate 200. The diameter of the limiting hole 2000 is slightly larger than the outer diameter of the safety pin 71, so that the safety pin 71 can be smoothly inserted into the limiting hole 2000. When the lifting... When the mold-flipping cylinder 4 pushes the extended cylinder body 40 through the cylinder shaft 41, the thrust is transmitted through the hinge 42 to the first flipping plate 200 and the second flipping plate 201 respectively. The first flipping plate 200 and the second flipping plate 201 flip upward about the fixed shaft 11. A first resistance gauge 5 is provided between the hinge 42 and the mold-flipping cylinder 4. The stroke of the first resistance gauge 5 controls the action of the mold-flipping cylinder 4, thereby controlling the upward flipping angle of the flipping seat 20. One end of the cylinder 30 of the lifting cylinder 3 is fixedly connected to one side of the auxiliary clamping plate 2031. One end of the telescopic shaft 31, located inside the cylinder 30 of the lifting cylinder 3, is fixedly connected to one side of the stabilizing plate 212. When the lifting cylinder 3 drives the telescopic shaft 31 to extend out of the cylinder 30, the telescopic shaft 31 transmits the thrust synchronously to the stabilizing plate 212, causing the stabilizing plate 212 to drive the lifting shaft 211 to rise along the sliding bushing 210. The lifting shaft 211 then drives the main clamping plate 213. The mold moves to the side of the auxiliary clamping plate 2031. A second resistance ruler 6 is provided between the stabilizing plate 212 and the auxiliary clamping plate 2031. The stroke of the second resistance ruler 6 controls the action of the mold lifting cylinder 3, thereby controlling the sliding displacement of the lifting seat 21. The stroke distance of the second resistance ruler 6 is equal to the original distance between the main clamping plate 213 and the auxiliary clamping plate 2031 minus the mold thickness. The second resistance ruler 6 is used to prevent the main clamping plate 213 from excessively lifting the mold, which would cause the auxiliary clamping plate 2031 to squeeze and damage the mold.

[0031] Working principle: The basic support frame is formed by the fixing plate 10 and the fixing shaft 11 of the mold lifting fixing frame 1. The auxiliary fixing bracket 12 is adapted to connect external equipment. The cylinder mounting plate 13 stabilizes the mold lifting and tilting cylinder 4. In the limiting device 7, the pin cylinder 70 drives the safety pin 71 to extend and retract along the guide hole 720 of the pin guide seat 72 through the cylinder shaft 700. When the tilting seat 20 is tilted into place, the height of the pin guide seat 72 is consistent with the assembly gap, so that the guide hole 720 and the limiting hole 2000 are connected. The safety pin 71 is inserted into the limiting hole 2000 to form a physical limit, which cooperates with the pin guide seat 72. Precise guidance constitutes a mechanical protection mechanism to prevent accidental rotation of the tilting seat 20. The first tilting plate 200 of the tilting seat 20 rotates with the fixed shaft 11 to form a fulcrum and is connected to the hydraulic cylinder shaft 41 via the hinge 42 to convert the thrust into a tilting torque. The second tilting plate 201 is symmetrically arranged with the first tilting plate 200 and is also connected to the hydraulic cylinder shaft 41 via the hinge 42 to convert the thrust into a tilting torque. The two tilting cylinders 4 work synchronously. The first tilting plate 200 and the second tilting plate 201 are connected by a reinforcing plate 202 to form a rigid frame to enhance the torsional strength. The reinforcing plate 202 supports the sliding... The movable bushing 210 ensures the vertical movement of the lifting seat 21 and rigidly connects and fixes the auxiliary clamping component 203. The auxiliary clamping component 203 supports the secondary clamping plate 2031 through the connecting plate 2030 to form an auxiliary clamping surface. Four sets of sliding bushings 210 in the lifting seat 21 are arranged in a square on the reinforcing plate 202. The lifting shaft 211 passes through the sliding bushings 210 and is rigidly connected to the stabilizing plate 212 to achieve synchronous movement. The main clamping plate 213 cooperates with the mold positioning hole through the positioning pin 2130. When the lifting cylinder 3 drives the telescopic shaft 31 to lift the stabilizing plate 212, the main clamping plate 213 moves towards the secondary clamping plate. The 2031 movement forms a clamping space to precisely fix the mold. At the same time, the first resistance gauge 5 controls the action of the mold-lifting and flipping cylinder 4 through the stroke to adjust the flipping angle. The stroke of the second resistance gauge 6 is set to the original distance between the main clamping plate 213 and the auxiliary clamping plate 2031 minus the mold thickness. The stroke control of the mold-lifting and lifting cylinder 3 prevents the main clamping plate 213 from being excessively lifted, which would cause the auxiliary clamping plate 2031 to squeeze and damage the mold. This achieves the complete action of the upper mold safely detaching from the lower mold, stable clamping, and precise flipping. Through the protection of mechanical drive, resistance gauge control, and physical limit, the safety and reliability of the operation process are guaranteed.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A safe and reliable mold lifting and flipping mechanism, comprising a mold fixing frame, characterized in that: The mold-lifting fixing frame is equipped with a mold-lifting and tilting seat. A mold-lifting and tilting cylinder is located on each side of the mold-lifting and tilting seat. The cylinder body of each cylinder is connected to the mold-lifting fixing frame via a rotating seat. The mold-lifting fixing frame connects to the mold-lifting and tilting seat. The mold-lifting and tilting seat clamps the upper mold and tilts it after it is detached from the lower mold. The mold-lifting and tilting cylinder drives the mold-lifting and tilting seat to rotate relative to the mold-lifting fixing frame, thus achieving the mold-lifting action. A limiting device is provided on one side of the mold lifting and tilting seat. The limiting device is used to limit the mold lifting and tilting seat after it is tilted into place. The limiting device includes a pin cylinder fixed on the mold fixing frame, a safety pin provided at the output end of the pin cylinder, and a pin guide seat sleeved on the safety pin. The pin guide seat is fixedly connected to the mold fixing frame. The mold lifting and tilting seat is provided with a limiting hole that cooperates with the safety pin of the limiting device. The limiting hole is used to cooperate with the safety pin to limit the rotation of the mold lifting and tilting seat.

2. The safe and reliable mold lifting and flipping mechanism according to claim 1, characterized in that: The pin cylinder includes a cylinder body and a cylinder shaft. The cylinder shaft is inserted into the connection hole at one end of the safety pin to complete the limiting connection. The pin guide seat is provided with a guide hole, which is used to cooperate with the pin cylinder to drive the extension and retraction of the safety pin.

3. The safe and reliable mold lifting and flipping mechanism according to claim 1, characterized in that: The height of the pin guide seat is the same as the assembly gap between the mold lifting and tilting seat and the mold lifting and tilting seat. After the mold lifting and tilting seat completes its tilting, the guide hole of the pin guide seat and the limit hole of the mold lifting and tilting seat form a channel for the safety pin to move, ensuring that the safety pin can be smoothly inserted into the limit hole.

4. The safe and reliable mold lifting and flipping mechanism according to claim 1, characterized in that: The mold lifting fixing frame includes fixing plates on both sides of the mold lifting and tilting seat, a fixing shaft between the two fixing plates, a secondary fixing bracket on one side of the two fixing plates, and a hydraulic cylinder mounting plate on each of the two fixing plates. The secondary fixing bracket is used to adapt to the connection equipment.

5. The safe and reliable mold lifting and flipping mechanism according to claim 4, characterized in that: The mold lifting and flipping seat includes a flipping seat rotatably connected to the fixed shaft and a lifting seat sleeved on the flipping seat via a sliding shaft. The lifting seat is used to cooperate with the flipping seat to lift the upper mold and clamp and limit it. The flipping seat is used to cooperate with the mold flipping cylinder to flip the lifting seat.

6. The safe and reliable mold lifting and flipping mechanism according to claim 5, characterized in that: A mold-lifting cylinder is provided between the flipping seat and the lifting seat. The mold-lifting cylinder is used to drive the lifting seat to move vertically relative to the flipping seat.

7. The safe and reliable mold lifting and flipping mechanism according to claim 5, characterized in that: The flipping seat includes a first flipping plate sleeved on the fixed shaft, a second flipping plate provided on one side relative to the first flipping plate, a reinforcing plate provided between the first flipping plate and the second flipping plate, and an auxiliary clamping member provided below the reinforcing plate.

8. The safe and reliable mold lifting and flipping mechanism according to claim 5, characterized in that: The lifting seat includes a lifting shaft passing through the sliding bushing, a stabilizing plate located at one end of the lifting shaft, and a main clamping plate located at the other end of the lifting shaft.

9. A safe and reliable mold lifting and flipping mechanism according to claim 7, characterized in that: The auxiliary clamping component includes two connecting plates located below the reinforcing plate and a secondary clamping plate located between the two connecting plates.

10. A safe and reliable mold lifting and flipping mechanism according to claim 8, characterized in that: The main clamping plate is provided with a positioning pin, which is used to position the mold.

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