A mold quick replacement device and method for a hydraulic curing press

Abstract

A mold quick replacement device and method for hydraulic vulcanizing machine. The mold locking mechanism includes a shell, a driver, a mold locking block, a detection rod, a first detector, a second detector, the shell is connected to the upper mold positioning seat, the shell through holes are distributed on the bottom surface of the shell, the driving rod is connected with the mold locking block, the detection rod is connected to the mold locking block, the mold locking block is located in the shell cavity and connected with the shell limiting part, the waist-shaped holes are distributed on the mold locking block, the detection head of the first detector extends into the shell cavity and is aligned with the detection rod, and the detection head of the second detector extends into the shell cavity and is aligned with the mold locking block. The method comprises separating the lower mold from the lower mold positioning mechanism; the upper mold is combined with the lower mold; the mold locking mechanism is unlocked; the upper mold positioning seat is separated from the upper mold; the upper mold and the lower mold are fixed; the upper mold and the lower mold are lifted away from the lower mold positioning mechanism by the moving device; the new mold is placed and restored to the initial state. The advantages are: improving the mold replacement efficiency and wide application range.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment manufacturing technology for hydraulic vulcanizing machines, and more particularly to a quick mold changing device and method for hydraulic vulcanizing machines. Background Technology

[0002] A hydraulic vulcanizing machine is a machine used for vulcanizing rubber and plastic products. It features functions such as timed mold locking, automatic pressure compensation, automatic temperature control, automatic timing, and alarm upon completion. A typical vulcanizing machine structure includes an upper and lower mold that can be aligned, a drive mechanism that moves the upper mold relative to the lower mold up and down, and a lower mold positioning mechanism. Because rubber and plastic products vary in size, the corresponding upper and lower molds need to be changed and adjusted according to the product to be vulcanized. The lower mold is fixed to the lower mold positioning mechanism with screws, and the upper mold is fixed to the drive mechanism with screws or a locking mechanism. Since each screw needs to be loosened and tightened individually, the efficiency of changing the corresponding mold for the rubber and plastic product is very low. While using a locking mechanism to speed up the upper mold change, the following problems still exist: 1. The locking mechanism uses a combination of a single cylinder and a mechanical linkage. During locking, the cylinder pushes the linkage to swing into a diamond shape, thereby locking the connecting structure on the linkage into the corresponding connecting groove of the upper mold, clamping the upper mold. This structure relies on a single cylinder drive. If the cylinder malfunctions, it needs immediate replacement; otherwise, it affects mold locking and opening. Furthermore, it lacks detection methods. If the cylinder fails to push the connecting rod properly, it can easily jam the upper mold, leading to replacement failure. Overall, the efficiency is very low. Secondly, the locking mechanism uses a combination of four independent cylinders and a locking module. During locking, the four cylinders push the locking module to lock the corresponding protrusion of the upper mold, achieving fixation. A Chinese utility model patent with patent number 202122034006.9, entitled "A Hydraulic Vulcanizing Machine Mold Fixing and Positioning Device," discloses such a structure. Specifically, its structure includes a hydraulic vulcanizing machine mold fixing device and a hydraulic vulcanizing machine mold positioning device fixedly mounted on the crossbeam of the hydraulic vulcanizing machine. The hydraulic vulcanizing machine mold fixing devices are evenly distributed circumferentially around the crossbeam of the hydraulic vulcanizing machine, while the hydraulic vulcanizing machine mold positioning devices are symmetrically distributed circumferentially around the crossbeam of the hydraulic vulcanizing machine. The hydraulic vulcanizing machine mold fixing devices are axially symmetrical with respect to the hydraulic vulcanizing machine mold positioning devices. This structure requires a positioning device and involves many components, making it difficult to manufacture and use. Furthermore, the fixing device requires the two racks to engage to secure the lifting column, thus limiting it to fixing only one size of upper mold. It only addresses the technical issue of improving upper mold replacement efficiency but not the technical issue of easily changing upper molds to accommodate different tire sizes. Moreover, the sensor block and proximity switch are exposed outside the housing, making them susceptible to external influences. This could lead to detection errors that mislead the control module into believing the locking module is not in place, affecting the actual mold-locking efficiency. Therefore, the existing upper mold locking device structure on the vulcanizing machine needs further improvement. Summary of the Invention

[0003] The first technical problem to be solved by the present invention is to provide a quick mold changing device for hydraulic vulcanizing machines that can accelerate the changing speed of the upper mold and improve the mold changing efficiency, in view of the above-mentioned existing technology.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: This quick mold changing device for hydraulic vulcanizing machines includes a mold locking mechanism distributed on the upper mold positioning seat and a connecting rod fixed on the top surface of the upper mold and capable of connecting with the corresponding mold locking mechanism. The mold locking mechanism includes a housing, a driver, a locking module, a detection rod, a first detector, and a second detector. The housing is connected to the upper mold positioning seat, and through holes for the connecting rod are distributed on the bottom surface of the housing. The driver is connected to the housing, and the driving rod of the driver is connected to one end of the locking module. The detection rod is connected to the locking module. The locking module is located in the inner cavity of the housing and is connected to a housing limiting part that guides the locking module to move back and forth linearly relative to the housing. The locking module has oblong holes that can engage with the limiting part of the connecting rod. The width of the unlocking end of the oblong hole is greater than the width of the locking end of the oblong hole. The detection head of the first detector extends into the inner cavity of the housing and aligns with the detection rod. The detection head of the second detector extends into the inner cavity of the housing and aligns with the other end of the locking module.

[0005] As an improvement, the driver is a drive cylinder, and the drive rod of the drive cylinder can preferably pass through the side wall of the housing and be connected to the lock module in a transmission manner.

[0006] In a further improvement, the end of the drive rod can preferably be connected to a drive wheel, the middle of the drive wheel is provided with a bearing, the bearing is sleeved on the transmission rod, and the two ends of the transmission rod are respectively engaged in the corresponding connecting grooves of the lock module.

[0007] As an improvement, the housing limiting part can preferably be a limiting screw that is spaced apart on both sides of the locking module.

[0008] As an improvement, the limiting part of the connecting rod can preferably be an annular groove on the side wall of the connecting rod, and a limiting protrusion that can engage with the annular groove can preferably be provided on the inner wall of the locking end of the waist-shaped hole.

[0009] As an improvement, the first detector, the second detector, and the driver can preferably be connected to a controller via lines, and the controller is connected to the drive mechanism of the hydraulic vulcanizing machine via lines. The controller starts the drive mechanism when it receives the locking modules of all locking mechanisms moving into place.

[0010] The second technical problem to be solved by the present invention is to provide a method for rapid mold replacement on a hydraulic vulcanizing machine that can speed up the replacement of the upper mold and improve the mold replacement efficiency, in view of the above-mentioned existing technology.

[0011] The technical solution adopted by this invention to solve the above-mentioned technical problems is as follows: This method for quick mold replacement on a hydraulic vulcanizing machine includes the following steps:

[0012] 1. When the hydraulic vulcanizing machine is in the mold-separating state, the lower mold is separated from the lower mold positioning mechanism of the hydraulic vulcanizing machine;

[0013] 2. Close the upper and lower molds of the hydraulic vulcanizing machine;

[0014] 3. The locking mechanism distributed on the upper mold positioning seat is unlocked, so that the locking mechanism is separated from the corresponding upper mold connecting rod;

[0015] 4. Start the drive mechanism to separate the upper mold positioning seat from the upper mold of the hydraulic vulcanizing machine;

[0016] 5. Secure the upper and lower molds together;

[0017] 6. The upper and lower molds, which are fixed together, are lifted away from the lower mold positioning mechanism by a moving device;

[0018] 7. Place the new mold assembly on the lower mold positioning mechanism and remove the fixing structures of the upper and lower molds;

[0019] 8. Move the upper mold positioning seat to align with the new upper mold, so that the mold locking mechanism is connected to the connecting rod of the corresponding upper mold;

[0020] 9. The upper mold positioning seat rises to lift the upper mold, thereby separating the upper mold and the lower mold;

[0021] 10. Fix the new lower mold to the lower mold positioning mechanism to complete the quick mold change for use on the hydraulic vulcanizing machine;

[0022] The locking mechanism is characterized by comprising a housing, a driver, a locking module, a detection rod, a first detector, and a second detector. The housing is connected to the upper mold positioning seat, and the bottom surface of the housing has through holes for the connecting rod to extend into. The driver is connected to the housing, and the driving rod of the driver is connected to one end of the locking module. The detection rod is connected to the locking module. The locking module is located in the inner cavity of the housing and is connected to a housing limiting part that guides the locking module to move back and forth linearly relative to the housing. The locking module has oblong holes that can engage with the limiting part of the connecting rod. The width of the unlocking end of the oblong hole is greater than the width of the locking end of the oblong hole. The detection head of the first detector extends into the inner cavity of the housing and is aligned with the detection rod. The detection head of the second detector extends into the inner cavity of the housing and is aligned with the other end of the locking module.

[0023] As an improvement, steps one to ten can preferably be implemented automatically by a controller. The first detector, the second detector, and the driver are respectively connected to the controller via lines. The controller is connected to the drive mechanism of the hydraulic vulcanizing machine via lines. The controller starts the drive mechanism when it receives the locking modules of all locking mechanisms moving into place.

[0024] In a further improvement, the controller may preferably include security detection, which specifically means that when all first detectors detect that the corresponding lock module is in a locked state, and any second detector detects that the corresponding lock module is in an unlocked state, the controller stops driving the mechanism; when all first detectors detect that the corresponding lock module is in an unlocked state, and any second detector detects that the corresponding lock module is in a locked state, the controller stops driving the mechanism; when any first detector and any second detector simultaneously detect a lock module state inconsistent with that detected by the other sensors, the controller stops driving the mechanism.

[0025] Compared with the prior art, the advantages of this invention are as follows: The upper mold and the upper mold positioning seat are detachably connected by a locking mechanism distributed on the upper mold positioning seat and a connecting rod fixed on the top surface of the upper mold and connected to the corresponding locking mechanism. This connection structure allows for rapid replacement, improving the mold replacement efficiency of the hydraulic vulcanizing machine. The first and second detectors detect the position of the locking module at both ends, allowing for more precise determination of whether the locking module has moved into place, facilitating mold opening and locking of the hydraulic vulcanizing machine and reducing misoperation. The detection heads of both the first and second detectors are located inside the housing, in a relatively enclosed environment, reducing external influences. The sound also helps reduce detection errors and more accurately determine whether the unlocking module has moved into place; by controlling the drive mechanism of the hydraulic vulcanizing machine through the controller, the opening and locking of the mold and the connection and separation of the upper mold and the upper mold positioning seat can be automatically controlled, further improving the mold replacement efficiency. At the same time, the controller can also be set with a safety detection function, which can stop the opening operation of the hydraulic vulcanizing machine in time when any locking mechanism has a problem, making it safer to use; the bottom of the shell has shell through holes, and the shell through holes at different positions correspond to upper molds of different diameters. Therefore, this invention can not only facilitate the replacement of upper molds, but also facilitate the replacement of upper molds of different sizes and diameters, thus expanding its application range. Attached Figure Description

[0026] Figure 1 This is an application effect diagram of an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A three-dimensional view showing the middle and upper molds separated from the upper mold positioning seat;

[0028] Figure 3 yes Figure 2 Exploded structural diagram;

[0029] Figure 4 yes Figure 1 A 3D view showing the upper and lower molds separated normally;

[0030] Figure 5 yes Figure 3 A three-dimensional view of a mold in which the upper and lower molds are separated and fixed together;

[0031] Figure 6 yes Figure 1 A three-dimensional view of the central locking mechanism;

[0032] Figure 7 yes Figure 6 A three-dimensional view from another angle;

[0033] Figure 8 yes Figure 7 Exploded structural diagram;

[0034] Figure 9 yes Figure 8 A three-dimensional view from another angle;

[0035] Figure 10 yes Figure 8 Further structural decomposition diagram;

[0036] Figure 11 yes Figure 10 Further structural decomposition diagram;

[0037] Figure 12 yes Figure 8 Top view after removing the disassembled shell portion;

[0038] Figure 13 yes Figure 12 Cross-sectional view along line AA;

[0039] Figure 14 yes Figure 13 Cross-sectional view of the central locking module after it has been moved. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0041] like Figures 1 to 14As shown, the quick mold changing device for a hydraulic vulcanizing machine in this embodiment includes a mold locking mechanism distributed on the upper mold positioning seat 1 and a connecting rod 101 fixed on the top surface of the upper mold 10 and capable of connecting to the corresponding mold locking mechanism. The mold locking mechanism includes a housing 3, a driver 31, a locking module 32, a detection rod 321, a first detector 4, and a second detector 5. The housing 3 is connected to the upper mold positioning seat 1, and through holes for the connecting rod 101 to extend into are distributed on the bottom surface of the housing. The driver 31 is connected to the housing 3, and the driving rod of the driver 31 is connected to the locking module. One end of the locking module 32 is connected to the detection rod 321, which is connected to the locking module 32. The locking module 32 is located in the inner cavity of the housing and is connected to the housing limiting part that guides the locking module 32 to move back and forth linearly relative to the housing 3. The locking module 32 has oblong holes 322 that can engage with the limiting part of the connecting rod 101. The width of the unlocking end of the oblong hole is greater than the width of the locking end of the oblong hole. The detection head of the first detector 4 extends into the inner cavity of the housing and is aligned with the detection rod 321. The detection head of the second detector 5 extends into the inner cavity of the housing and is aligned with the other end of the locking module 32. In this embodiment, there are four locking mechanisms, which are evenly distributed on the circumference of the upper mold positioning seat 1. Of course, two, three, five, six or more can also be set. Of course, they can be unevenly distributed. From the perspective of stability and manufacturing cost, four and evenly distributed are most suitable. The number of housing through holes is at least two. The housing through holes are set along the moving direction of the locking module 32, that is, the housing axial direction. The shell through holes of the four shells are located on a circumference and correspond to the connecting rod 101 of the upper mold. Since the shell through holes on different circumferences correspond to different circle diameters, this device can be adapted to upper molds 10 of different diameters.

[0042] The actuator 31 is a drive cylinder, and the drive rod of the drive cylinder passes through the side wall of the housing and is connected to the lock module 32 for transmission. A drive wheel 33 is connected to the end of the drive rod, and a bearing is provided in the middle of the drive wheel 33. The bearing is sleeved on the transmission rod 34, and both ends of the transmission rod 34 are respectively engaged in the corresponding connecting grooves 323 of the lock module 32. The housing limiting part consists of limiting screws 35 spaced apart on both sides of the lock module. The limiting part of the connecting rod 101 is an annular groove on the side wall of the connecting rod, and a limiting protrusion 324 that can engage with the annular groove is provided on the inner wall of the locking end of the waist-shaped hole.

[0043] The first detector 4, the second detector 5, and the driver 31 are respectively connected to the controller via wiring. The controller is connected to the drive mechanism 6 of the hydraulic vulcanizing machine via wiring. The controller activates the drive mechanism 6 when it receives the locking modules 32 of all locking mechanisms moving into place. The first detector 4 and the second detector 5 are both inductive sensors. The specific structure of inductive sensors is prior art and will not be described further. The drive mechanism 6 employs a hydraulic cylinder. The upper crossbeam 11 is connected to the guide column 21, and the cylinder rod of the drive cylinder is connected to the upper crossbeam 11. The upper crossbeam 11 is connected to the upper mold positioning seat 1. A buffer section 211 is provided on the guide column 21. When the upper crossbeam 11 passes through the buffer section 211, it decelerates, achieving slow engagement of the upper mold 10 and the lower mold 20. The deceleration can be achieved physically, i.e., by setting an elastic structure on the upper crossbeam 11, which ejects and contacts the deceleration groove of the buffer section 211 when it encounters it. Alternatively, it can be achieved electronically, i.e., by setting a position sensor on the upper crossbeam 11, which detects a change in distance when it encounters the deceleration groove of the buffer section 211 and sends a signal to the controller, which then controls the drive mechanism 6 to decelerate. The specific circuit used by the controller is existing technology and will not be described in detail.

[0044] This invention primarily protects the locking mechanism of the upper mold. A steam pipe connector is also provided on the outer wall of the upper mold for connecting to a steam pipe. A plug-in seat is provided on the upper mold positioning seat 1, connecting to the steam pipe. The plug-in seat has vent holes, one connected to the opening of the steam inlet pipe and the other to the opening of the steam outlet pipe. Two plug-in connectors are provided on the corresponding steam pipe connectors. When the upper mold 10 and the upper mold positioning seat 1 are aligned, the two plug-in connectors engage with the corresponding vent holes. Each plug-in connector connects to the steam channel within the upper mold 10 via its own pipe, thus enabling rapid connection of the steam pipe while the upper mold is being assembled and disassembled. The plug-in connectors can also have a buffer structure, with the top opening of the plug-in connector engaging with the vent of the plug-in seat. A pointed pin is provided on the plug-in seat. When the upper mold 10 contacts the upper mold positioning seat 1, the pointed tip of the pin engages with the steam pipe connector, thus achieving rapid connection between the plug-in connector and the vent.

[0045] The method for quick mold change on a hydraulic vulcanizing machine according to this embodiment includes the following steps.

[0046] 1. When the hydraulic vulcanizing machine is in the mold-separation state, the lower mold 20 is separated from the lower mold positioning mechanism 2 of the hydraulic vulcanizing machine;

[0047] 2. Close the upper mold 10 and lower mold 20 of the hydraulic vulcanizing machine;

[0048] Third, the locking mechanism distributed on the upper mold positioning seat 1 is unlocked, so that the locking mechanism is separated from the connecting rod 101 of the corresponding upper mold 10;

[0049] 4. Start the drive mechanism 6 to separate the upper mold positioning seat 1 of the hydraulic vulcanizing machine from the upper mold 10;

[0050] 5. Fix the upper mold 10 and the lower mold 20 together; threaded holes are provided on the side walls of the upper mold 10 and the lower mold 20 respectively. The upper mold 10 and the lower mold 20 are fixed together by the connecting plate. The specific connection structure and fixing method are known technologies, so they will not be described in detail.

[0051] 6. The upper mold 10 and lower mold 20, which are fixed together, are lifted away from the lower mold positioning mechanism 2 by a moving device;

[0052] 7. Place the new mold assembly on the lower mold positioning mechanism 2, and remove the fixing structure of the upper mold 10 and the lower mold 20;

[0053] 8. Move the upper mold positioning seat 1 to be aligned with the new upper mold 10, so that the mold locking mechanism is connected to the connecting rod 101 of the corresponding upper mold 10;

[0054] 9. The upper mold positioning seat 1 is raised to lift the upper mold 10, thereby separating the upper mold 10 and the lower mold 20;

[0055] 10. Fix the new lower mold 20 to the lower mold positioning mechanism 2 to complete the quick mold change for the hydraulic vulcanizing machine;

[0056] The locking mechanism includes a housing 3, a driver 31, a locking module 32, a detection rod 321, a first detector 4, and a second detector 5. The housing 3 is connected to the upper mold positioning seat 1. The bottom surface of the housing has through holes that allow the connecting rod 101 to extend into it. The driver 31 is connected to the housing 3. The driving rod of the driver 31 is connected to one end of the locking module 32. The detection rod 321 is connected to the locking module 32. The locking module 32 is located in the inner cavity of the housing and is connected to a housing limiting part that guides the locking module 32 to move back and forth linearly relative to the housing 3. The locking module 32 has oblong holes 322 that can engage with the limiting part of the connecting rod 101. The width of the unlocking end of the oblong hole is greater than the width of the locking end of the oblong hole. The detection head of the first detector 4 extends into the inner cavity of the housing and is aligned with the detection rod 321. The detection head of the second detector 5 extends into the inner cavity of the housing and is aligned with the other end of the locking module 32.

[0057] Steps one through ten are automatically implemented by the controller. The first detector 4, the second detector 5, and the driver 31 are connected to the controller via lines. The controller is connected to the drive mechanism 6 of the hydraulic vulcanizing machine via lines. The controller starts the drive mechanism 6 when it receives the locking modules 32 of all locking mechanisms moving into place.

[0058] The controller includes security detection, which specifically refers to the following: when all first detectors 4 detect that the corresponding lock module 32 is in a locked state, and any second detector 5 detects that the corresponding lock module 32 is in an unlocked state, the controller stops driving mechanism 6; when all first detectors 4 detect that the corresponding lock module 32 is in an unlocked state, and any second detector 5 detects that the corresponding lock module 32 is in a locked state, the controller stops driving mechanism 6; when any first detector 4 and second detector 5 simultaneously detect a lock module state inconsistent with that detected by the other sensors, the controller stops driving mechanism 6.

[0059] In this invention, the terms “first” and “second” are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the invention. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0060] Working principle: The locking module can move linearly relative to the housing, causing the limit protrusion to engage or disengage the connecting rod, thus locking and unlocking the upper mold and its positioning seat. Distance detectors are installed at both ends of the locking module to accurately detect whether it has moved into position, improving detection accuracy and ensuring smooth mold opening and locking. The controller can determine whether there are situations where mold opening should not occur based on the feedback signals from the detectors, preventing mold opening before the locking module is fully unlocked and improving production safety.

Claims

1. A quick mold changing device for a hydraulic vulcanizing machine, comprising a mold-locking mechanism distributed on an upper mold positioning seat (1) and a connecting rod (101) fixed on the top surface of the upper mold (10) and capable of connecting to the corresponding mold-locking mechanism, characterized in that: The locking mechanism includes a housing (3), a driver (31), a locking module (32), a detection rod (321), a first detector (4), and a second detector (5). The housing (3) is connected to the upper mold positioning seat (1), and the bottom surface of the housing has through holes for the connecting rod (101) to extend into. The driver (31) is connected to the housing (3), and the driving rod of the driver (31) is connected to one end of the locking module (32). The detection rod (321) is connected to the locking module (32). (32) is located in the inner cavity of the housing and connected to the housing limiting part that guides the lock module (32) to move back and forth linearly relative to the housing (3). The lock module (32) has waist-shaped holes (322) that can be engaged with the limiting part of the connecting rod (101). The width of the unlocking end of the waist-shaped hole is greater than the width of the locking end of the waist-shaped hole. The detection head of the first detector (4) extends into the inner cavity of the housing and is aligned with the detection rod (321). The detection head of the second detector (5) extends into the inner cavity of the housing and is aligned with the other end of the lock module (32).

2. The quick mold change device according to claim 1, characterized in that: The driver (31) is a driving cylinder, and the driving rod of the driving cylinder passes through the side wall of the housing and is connected to the lock module (32) for transmission.

3. The quick mold change device according to claim 2, characterized in that: The end of the drive rod is connected to a drive wheel (33), and a bearing is provided in the middle of the drive wheel (33). The bearing is sleeved on the transmission rod (34), and the two ends of the transmission rod (34) are respectively engaged in the corresponding connecting grooves (323) of the lock module (32).

4. The quick mold change device according to any one of claims 1 to 3, characterized in that: The housing limiting part consists of limiting screws (35) spaced apart on both sides of the locking module.

5. The quick mold change device according to any one of claims 1 to 3, characterized in that: The limiting part of the connecting rod (101) is an annular groove on the side wall of the connecting rod, and a limiting protrusion (324) that can engage with the annular groove is provided on the inner wall of the locking end of the waist-shaped hole.

6. The quick mold change device according to any one of claims 1 to 3, characterized in that: The first detector (4), the second detector (5) and the driver (31) are respectively connected to the controller via lines. The controller is connected to the drive mechanism (6) of the hydraulic vulcanizing machine via lines. The controller starts the drive mechanism (6) when it receives the locking modules (32) of all locking mechanisms moving into place.

7. A method for quick mold change on a hydraulic vulcanizing machine, comprising the following steps:

1. When the hydraulic vulcanizing machine is in the mold splitting state, the lower mold (20) is separated from the lower mold positioning mechanism (2) of the hydraulic vulcanizing machine; 2. Close the upper mold (10) and lower mold (20) of the hydraulic vulcanizing machine; 3. The locking mechanism distributed on the upper mold positioning seat (1) is unlocked, so that the locking mechanism is separated from the connecting rod (101) of the corresponding upper mold (10); 4. Start the drive mechanism (6) to separate the upper mold positioning seat (1) of the hydraulic vulcanizing machine from the upper mold (10); 5. Fix the upper mold (10) and the lower mold (20) together; 6. The upper mold (10) and lower mold (20) fixed together are lifted away from the lower mold positioning mechanism (2) by a moving device; 7. Place the new mold assembly on the lower mold positioning mechanism (2) and remove the fixing structure of the upper mold (10) and the lower mold (20); 8. Move the upper mold positioning seat (1) to be aligned with the new upper mold (10), so that the mold locking mechanism is connected to the connecting rod (101) of the corresponding upper mold (10); 9. The upper mold positioning seat (1) is raised to lift the upper mold (10), thereby separating the upper mold (10) and the lower mold (20); 10. Fix the new lower mold (20) to the lower mold positioning mechanism (2) to complete the quick mold replacement for the hydraulic vulcanizing machine; Its features are: The locking mechanism includes a housing (3), a driver (31), a locking module (32), a detection rod (321), a first detector (4), and a second detector (5). The housing (3) is connected to the upper mold positioning seat (1), and the bottom surface of the housing has through holes for the connecting rod (101) to extend into. The driver (31) is connected to the housing (3), and the driving rod of the driver (31) is connected to one end of the locking module (32). The detection rod (321) is connected to the locking module (32). (32) is located in the inner cavity of the housing and connected to the housing limiting part that guides the lock module (32) to move back and forth linearly relative to the housing (3). The lock module (32) has waist-shaped holes (322) that can be engaged with the limiting part of the connecting rod (101). The width of the unlocking end of the waist-shaped hole is greater than the width of the locking end of the waist-shaped hole. The detection head of the first detector (4) extends into the inner cavity of the housing and is aligned with the detection rod (321). The detection head of the second detector (5) extends into the inner cavity of the housing and is aligned with the other end of the lock module (32).

8. The quick mold change method according to claim 7, characterized in that: Steps one through ten are automatically implemented by the controller. The first detector (4), the second detector (5) and the driver (31) are connected to the controller via lines. The controller is connected to the drive mechanism (6) of the hydraulic vulcanizing machine via lines. The controller starts the drive mechanism (6) when it receives the locking modules (32) of all locking mechanisms moving into place.

9. The quick mold change method according to claim 8, characterized in that: The controller includes security detection, which specifically means that when all first detectors (4) detect that the corresponding lock module (32) is in a locked state, and any second detector (5) detects that the corresponding lock module (32) is in an unlocked state, the controller stops driving the mechanism (6); when all first detectors (4) detect that the corresponding lock module (32) is in an unlocked state, and any second detector (5) detects that the corresponding lock module (32) is in a locked state, the controller stops driving the mechanism (6); when any first detector (4) and second detector (5) are inconsistent with the lock module state detected by the other sensors, the controller stops driving the mechanism (6).

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