Leak-proof detection mechanism and method for hydraulic oil cylinder for vacuum film laminator

Abstract

The invention relates to the technical field of hydraulic cylinders, in particular to a leak-proof detection mechanism and method for a hydraulic oil cylinder for a vacuum film laminator, and the mechanism comprises a follower plate which is connected with a piston rod, and is provided with a plurality of groups of protruding parts at equal intervals; the energy storage assembly is connected with the oil cylinder, and the energy storage assembly can be triggered by the protruding part to move towards or away from the follower plate; the reverse extension assembly is connected with the energy storage assembly, and when the energy storage assembly moves away from the follower plate, the reverse extension assembly can be inserted into locking grooves formed in the follower plate at equal intervals; and the switching assembly communicates with the oil cylinder, and the switching assembly can cut off an oil conveying pipeline connected with the oil cylinder when the energy storage assembly moves away from the follower plate, so that the stability when the piston rod drives an object to move is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinders, and in particular to a hydraulic cylinder anti-leakage detection mechanism and method for a vacuum laminator. Background Art

[0002] In the electronics industry, vacuum lamination machines are widely used in electronic components, flat panel displays, LEDs, etc. Through vacuum lamination machines, different materials can be accurately pressed together at high temperatures to form high-precision, high-strength electronic products.

[0003] In the production process of vacuum laminating machine, hydraulic cylinders are needed to load and unload materials. Frequent lifting and lowering actions will cause oil leakage in the hydraulic cylinders. The main reasons include damage to the seals in the hydraulic cylinders, which leads to reduced sealing performance, and rupture or slippage of the corresponding connector caused by the hydraulic oil pipeline under long-term oil pressure. At this time, the lifted object will accelerate to fall due to the loss of support force, which will cause the object to fall and be damaged.

[0004] In the prior art, a ratchet structure is often used to prevent falling caused by hydraulic failure, but it is often only effective when the hydraulic pressure is rising and maintained. A better solution is needed for the falling problem caused by hydraulic failure during the descent process. Summary of the invention

[0005] The purpose of the present invention is to provide a hydraulic cylinder anti-leakage detection mechanism and method for a vacuum laminating machine, which can quickly respond to and protect against falling problems caused by hydraulic failure during the descent process, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator, comprising a base, a cylinder is arranged on the base, and a piston rod is installed in the cylinder;

[0008] Also includes:

[0009] A follower plate connected to the piston rod, wherein a plurality of groups of protrusions are equidistantly arranged on the follower plate;

[0010] An energy storage assembly connected to the oil cylinder, wherein the energy storage assembly can be triggered by the protrusion to move toward or away from the follower plate;

[0011] A reverse extension component connected to the energy storage component, when the energy storage component moves away from the follower plate, the reverse extension component can be inserted into a locking groove equidistantly arranged on the follower plate;

[0012] A switching component is connected to the oil cylinder, and the switching component can cut off the oil pipeline connected to the oil cylinder when the energy storage component moves away from the follower plate.

[0013] As a further solution of the present invention: the oil cylinder is connected to a connecting frame, the energy storage assembly includes a guide portion fixedly mounted on the connecting frame, a traverse rod is provided on the guide portion, a first abutment wheel adapted to the protrusion is rotatably mounted on one end of the traverse rod, and two groups of symmetrical inclined portions are provided at the bottom of the traverse rod, and an outer protrusion protruding downward is provided at the connection of the two groups of inclined portions;

[0014] The energy storage assembly further comprises an elastic structure arranged on the connecting frame, and the elastic structure is in rolling cooperation with the inclined portion.

[0015] As a further solution of the present invention: the elastic structure comprises a first slide groove arranged on the connecting frame, a lifting member is slidably installed in the first slide groove, and the lifting member is connected to the inner wall of the first slide groove through a columnar spring;

[0016] A second abutment wheel is also rotatably mounted on the lifting member. When the piston rod loses speed and descends, the second abutment wheel can move from one set of inclined parts to the other set of inclined parts.

[0017] As a further solution of the present invention: a counterweight is fixedly mounted on one end of the transverse shift rod away from the first abutment wheel.

[0018] As a further solution of the present invention: the connecting frame is further provided with a second slide slot and a third slide slot which are perpendicular to each other;

[0019] The reverse extension assembly includes a follower slidably mounted in the second slide groove and a bracket slidably mounted in the third slide groove, the bracket is detachably connected to a locking plate, the locking plate is adapted to the locking groove, and the bracket and the follower are connected via a support rod;

[0020] The reverse extension assembly also includes a slotted shaft structure connecting the follower and the counterweight portion, and when the second abutment wheel moves within one set of the inclined portions and does not move to the outer protrusion, the follower remains stationary.

[0021] As a further solution of the present invention: the slotted shaft structure comprises a connecting plate fixedly connected to the counterweight part, and a convex shaft is installed at the end of the connecting plate;

[0022] The grooved shaft structure also includes a horizontal groove and an inclined groove which are arranged on the follower and face one side of the convex shaft. The length of the horizontal groove is the same as the projection length of the inclined portion and the inclined groove on the horizontal plane.

[0023] As a further solution of the present invention: the switching assembly includes a pressure sensor connected to the oil cylinder and a communicating vessel arranged on the base, wherein a first cavity and a second cavity are formed in the communicating vessel, and the first cavity and the second cavity are respectively connected to the oil cylinder;

[0024] The switching assembly also includes an adjustment structure disposed inside the , and the adjustment structure is electrically connected to the pressure sensor.

[0025] As a further solution of the present invention: the regulating structure comprises a second blocking member and a first blocking member respectively arranged in the first cavity and the second cavity, and the first blocking member and the second blocking member are provided with staggered second conducting holes;

[0026] The adjustment structure also includes a stepper motor fixedly mounted on the communicating vessel, and the output shaft of the stepper motor is connected to two sets of switching parts that are respectively slidably fitted with the first blocking part and the second blocking part, and the two sets of switching parts are provided with coaxial first conducting holes.

[0027] A working method of the hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator as described above comprises the following steps:

[0028] Step 1: Connect the switching assembly to the external oil pumping device through pipelines;

[0029] Step 2: Activate the external oil pumping device to pump oil into the hydraulic cylinder, thereby raising the piston rod;

[0030] Step 3: When the oil pressure in the oil cylinder exceeds a preset value, the switching component can cut off the oil pipeline between the external oil pump device and the oil cylinder;

[0031] Step 4: When the cylinder loses pressure due to hydraulic oil leakage, the piston rod will drive the follower plate to move downward at a stall speed, and when the protrusion abuts against the energy storage assembly, the trigger assembly moves away from the follower plate and drives the reverse extension assembly to insert into the locking groove, so that the height of the piston rod is locked.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] By setting the energy storage structure, when the piston rod loses speed and accelerates downward movement, the protrusion can cooperate with the first abutting wheel, so that the traverse rod moves quickly, and drives the reverse extension component to lock the follower plate in time, so as to prevent the piston rod from moving downward further rapidly, resulting in excessive damage in the future and causing safety accidents, and ensure that the impact force when the follower plate is combined with the reverse extension component is smaller, thereby improving the durability of the reverse extension component;

[0034] By setting the reverse extension component, it can be ensured that when the piston rod drives the object to move at a normal speed, the locking plate and the follower plate are misaligned, thereby preventing the piston rod from being locked when it moves at a normal speed. When the piston rod stalls and moves downward quickly, the convex shaft can cooperate with the inclined groove to move the follower downward and drive the locking plate to insert into the locking groove, so that the stalling movement of the piston rod is locked, effectively preventing the risk of the object on the piston rod from stalling and falling.

[0035] By setting up a switching component, the oil inlet pipe and the oil return pipe can be connected separately, and when the hydraulic oil flows through the oil inlet pipe, the oil return pipe can be cut off from the external oil pumping device. When the hydraulic oil flows through the oil return pipe, the oil inlet pipe can be cut off from the external oil pumping device, thereby reducing the risk of the oil inlet pipe and the oil return pipe being broken or separated from the corresponding interface and causing pressure loss in the oil cylinder. At the same time, when the hydraulic oil leaks, the oil inlet pipe and the oil return pipe can be synchronously cut off from the external oil pumping device to ensure the hydraulic oil pressure in the oil cylinder as much as possible, while maintaining the height of the piston rod, cooperating with the locking of the follower plate, and improving the stability of the piston rod after stalling. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The present invention is a structural schematic diagram of an embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminating machine.

[0037] Figure 2 This is a structural schematic diagram from another angle of an embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator.

[0038] Figure 3 This is a schematic diagram of the internal structure of a hydraulic cylinder in an embodiment of an anti-leakage detection mechanism for a vacuum laminator.

[0039] Figure 4 This is a schematic structural diagram of an energy storage component and a reverse extension component in one embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator.

[0040] Figure 5 This is a structural schematic diagram from another angle of the energy storage component and the reverse extension component in one embodiment of the hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator.

[0041] Figure 6 This is a structural explosion diagram of the energy storage component in one embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator.

[0042] Figure 7 The present invention is a schematic structural diagram of a transverse shift rod in one embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator.

[0043] Figure 8 This is a structural schematic diagram of a reverse extension component in an embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator.

[0044] Fig. 9 This is a structural explosion diagram of the grooved shaft structure in one embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminating machine.

[0045] Fig.10 This is a schematic diagram of the internal structure of a communicating vessel in one embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminating machine.

[0046] Fig.11 This is a structural explosion diagram of the adjustment structure in one embodiment of a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminating machine.

[0047] In the figure: 1. base; 2. cylinder; 3. piston rod; 4. follower plate; 5. protrusion; 6. locking groove; 7. connecting frame; 701. first slide groove; 702. second slide groove; 703. third slide groove; 8. first abutment wheel; 9. transverse rod; 10. guide part; 11. counterweight part; 12. connecting plate; 13. cam shaft; 14. second abutment wheel; 15. lifting member; 16. columnar spring; 17. inclined part; 18. follower; 1801. horizontal groove; 1802. inclined groove; 19. support rod; 20. bracket; 21. locking plate; 22. pressure sensor; 23. communicating vessel; 24. first cavity; 25. second cavity; 26. stepping motor; 27. first blocking member; 28. second blocking member; 29. ​​switching member; 30. first conducting hole; 31. second conducting hole. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0050] See also Figures 1 to 11 In an embodiment of the present invention, a hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator includes a base 1, a cylinder 2 is arranged on the base 1, and a piston rod 3 is installed in the cylinder 2;

[0051] It also includes: a follower plate 4, an energy storage component, a reverse extension component and a switching component.

[0052] The follower plate 4 is connected to the piston rod 3, and a plurality of groups of protrusions 5 are equidistantly arranged on the follower plate 4. When the hydraulic oil is injected into the oil cylinder 2 and the piston rod 3 moves, the follower plate 4 can be driven to synchronously perform lifting and lowering actions;

[0053] The energy storage assembly is connected to the oil cylinder 2, and the energy storage assembly can be triggered by the protrusion 5 to move toward or away from the follower plate 4;

[0054] The oil cylinder 2 is connected to a connecting frame 7, and the energy storage assembly includes a guide portion 10 fixedly mounted on the connecting frame 7, a transverse rod 9 is arranged on the guide portion 10, a first abutment wheel 8 adapted to the protrusion 5 is rotatably mounted on one end of the transverse rod 9, and two groups of symmetrical inclined portions 17 are arranged at the bottom of the transverse rod 9, and an outer protrusion protruding downward is arranged at the connection of the two groups of the inclined portions 17;

[0055] The energy storage assembly further includes an elastic structure disposed on the connecting frame 7, the elastic structure rollingly cooperates with the inclined portion 17, the elastic structure includes a first slide groove 701 disposed on the connecting frame 7, a lifting member 15 is slidably installed in the first slide groove 701, and the lifting member 15 is connected to the inner wall of the first slide groove 701 via a columnar spring 16;

[0056] The lifting member 15 is also rotatably mounted with a second abutment wheel 14 . When the piston rod 3 loses speed and descends, the second abutment wheel 14 can move from one set of inclined portions 17 to the other set of inclined portions 17 .

[0057] In the initial state, the columnar spring 16 is in a compressed state. At this time, the second abutting wheel 14 is in contact with the end of a group of inclined portions 17 away from the follower plate 4. At this time, the columnar spring 16 has a tendency to release elastic potential energy, and the second abutting wheel 14 has a tendency to stabilize at the end of the group of inclined portions 17, so that the first abutting wheel 8 just fits the outside of the follower plate 4, and when the piston rod 3 drives the object to rise and fall at a predetermined speed, it can drive the follower plate 4 to move synchronously. In this process, when the protrusion 5 abuts against the first abutting wheel 8, the first abutting wheel 8 can drive The movable transverse rod 9 moves away from the follower plate 4. At this time, although the second abutment wheel 14 can move along the above-mentioned inclined portion 17, it will not move to the outer protrusion. When the protrusion 5 moves away from the first abutment wheel 8, the elastic potential energy is released by the cylindrical spring 16, so that the second abutment wheel 14 moves to the end of the above-mentioned inclined portion 17 again. That is, when the piston rod 3 performs a lifting action at a predetermined speed, the reverse extension component will not be triggered by the transverse rod 9, thereby avoiding the follower plate 4 and the reverse extension component combining to lock the piston rod 3 when the piston rod 3 moves normally.

[0058] When the pressure is lost due to hydraulic oil leakage, since there is an object supported on the top of the piston rod 3, the object will drive the piston rod 3 to move downward at an accelerated speed under the action of gravity, and make the follower plate 4 move downward at an accelerated speed synchronously. At this time, when the protrusion 5 abuts against the first abutment wheel 8, the first abutment wheel 8 can be subjected to a certain degree of impact, so that it can drive the second abutment wheel 14 from the above-mentioned inclined portion 17 to the outer protrusion through the transverse rod 9, and further move to another set of inclined portions 17. At this time, the columnar spring 16 can continue to drive the transverse rod 9 away from the follower plate 4 by releasing potential energy, and make the reverse extension component move quickly and be inserted into the locking groove 6, so that the follower plate 4 is locked, and then the stalled downward movement of the piston rod 3 is locked to prevent the piston rod 3 from continuing to move downward at a high speed, causing the object to fall and causing a safety accident.

[0059] Furthermore, when the piston rod 3 loses speed and moves downward rapidly, the protrusion 5 can impact the first abutment wheel 8, causing the transverse rod 9 to have a certain initial velocity. Meanwhile, the columnar spring 16 is further compressed. Under the action of the initial velocity of the transverse rod 9 and its own inertia, after the first abutment wheel 8 is separated from the protrusion 5, the transverse rod 9 can continue to move away from the follower plate 4, causing the second abutment wheel 14 to move over the outer protrusion. Subsequently, the columnar spring 16 releases elastic potential energy to drive the transverse rod 9 to accelerate away from the follower plate 4, so that the reverse extension assembly can be quickly inserted into the locking groove 6, thereby timely locking the piston rod 3 from losing speed and moving downward, and preventing the reverse extension assembly from being damaged by excessive impact when the piston rod 3 is accelerated to an ultra-high speed and combined with the reverse extension assembly.

[0060] A counterweight 11 is fixedly mounted on one end of the transverse rod 9 away from the first abutment wheel 8 .

[0061] By adding a counterweight 11 to the transverse rod 9, the mass of the transverse rod 9 can be increased, making the inertia it has greater when it moves, thereby ensuring that when the piston rod 3 and the follower plate 4 stall and move downward, and use the protrusion 5 to impact the first abutment wheel 8, the transverse rod 9 can have sufficient inertia to allow the outer protrusion to move from one side of the second abutment wheel 14 to the other side, and in the process of releasing the elastic potential energy of the columnar spring 16, the reverse extension component can cooperate with the locking groove 6 to achieve locking of the piston rod 3.

[0062] Through the above-mentioned arrangement, when the piston rod 3 stalls and accelerates downward, the protrusion 5 can cooperate with the first abutment wheel 8, so that the transverse rod 9 can move quickly, thereby driving the reverse extension component to lock the follower plate 4 in time, preventing the piston rod 3 from moving further downward rapidly, resulting in excessive destructive force in the future and causing a safety accident, and ensuring that the impact force when the follower plate 4 is combined with the reverse extension component is smaller, thereby improving the durability of the reverse extension component.

[0063] See also Figure 4-5 , Figure 7 to Figure 9 , the reverse extension component is connected to the counterweight portion 11, and when the energy storage component moves away from the follower plate 4, the reverse extension component can be inserted into the locking groove 6 equidistantly arranged on the follower plate 4;

[0064] The connecting frame 7 is also provided with a second slide groove 702 and a third slide groove 703 which are perpendicular to each other;

[0065] The reverse extension assembly includes a follower 18 slidably mounted in the second slide groove 702 and a bracket 20 slidably mounted in the third slide groove 703, the bracket 20 is detachably connected with a locking plate 21, the locking plate 21 is adapted to the locking groove 6, and the bracket 20 and the follower 18 are connected via a support rod 19, wherein, in an initial state, the locking plate 21 and the end of the protrusion 5 away from the follower plate 4 are in a separated state, that is, when the protrusion 5 follows the follower plate 4 to rise and fall at a predetermined speed, the locking plate 21 does not come into contact with the protrusion 5;

[0066] The reverse extension assembly further includes a slotted shaft structure connecting the follower 18 and the counterweight 11. When the second abutment wheel 14 moves in one set of the inclined portions 17 and does not move to the outer protrusion, the follower 18 remains stationary. The slotted shaft structure includes a connecting plate 12 fixedly connected to the counterweight 11, and a convex shaft 13 is installed at the end of the connecting plate 12.

[0067] The grooved shaft structure also includes a horizontal groove 1801 and an inclined groove 1802 which are arranged on the follower 18 and face the side of the convex shaft 13 . The length of the horizontal groove 1801 is the same as the projection length of the inclined portion 17 and the inclined groove 1802 on the horizontal plane.

[0068] When the piston rod 3 and the follower plate 4 rise or fall at a predetermined speed, the protrusion 5 cooperates with the first abutment wheel 8, and only the second abutment wheel 14 reciprocates along the inclined portion 17 away from the follower plate 4. At this time, the connecting plate 12 will also reciprocate following the transverse rod 9. During this process, the convex shaft 13 on the connecting plate 12 can reciprocate in the horizontal groove 1801, so that the follower 18 maintains a constant height. At this time, the position of the locking plate 21 is in a stationary state, which avoids the locking plate 21 combining with the locking groove 6 when the piston rod 3 moves normally, thereby preventing the normal movement of the piston rod 3.

[0069] When the piston rod 3 loses speed and moves downward rapidly, the protrusion 5 can impact the first abutment wheel 8, so that the transverse rod 9 can move until the second abutment wheel 14 moves over the outer protrusion, and then in the process of the cylindrical spring 16 releasing the elastic potential energy, the cam 13 will move further away from the follower plate 4. At this time, the cam 13 will move in the inclined groove 1802, causing the follower 18 to move downward, and drive the bracket 20 to move toward the follower plate 4 through the support rod 19 until the locking plate 21 can be inserted into the locking groove 6, thereby completing the locking of the follower plate 4 and locking the piston rod 3 in time to prevent the risk of objects on the piston rod 3 falling due to the piston rod 3 losing speed and moving downward.

[0070] It is worth noting that when the second abutment wheel 14 moves over the outer protrusion, the cylindrical spring 16 can actively release elastic potential energy to make the locking plate 21 move toward the follower plate 4. However, if the locking plate 21 is not highly overlapped with the locking groove 6 at this time, the locking plate 21 cannot be inserted into the locking groove 6. At this time, the cylindrical spring 16 is still in a state of releasing elastic potential energy and can make the locking plate 21 abut against the follower plate 4. At the same time, the locking plate 21 has a force applied to the follower plate 4, so that once the locking groove 6 and the locking plate 21 are highly overlapped, the locking plate 21 can be inserted into the locking groove 6 to lock the follower plate 4.

[0071] Through the above-mentioned arrangement, it can be ensured that when the piston rod 3 drives an object to move at a normal speed, the locking plate 21 and the follower plate 4 are misaligned, thereby preventing the piston rod 3 from being locked when it moves at a normal speed. When the piston rod 3 stalls and moves downward quickly, the cam 13 can cooperate with the inclined groove 1802 to move the follower 18 downward and drive the locking plate 21 to be inserted into the locking groove 6, so that the stalled movement of the piston rod 3 is locked, effectively preventing the risk of objects on the piston rod 3 stalling and falling.

[0072] See also Figure 10-11, the switching component is connected to the oil cylinder 2, and the switching component can cut off the oil pipeline connected to the oil cylinder 2 when the energy storage component moves away from the follower plate 4;

[0073] The switching assembly includes a pressure sensor 22 connected to the oil cylinder 2 and a communicating vessel 23 disposed on the base 1, wherein a first cavity 24 and a second cavity 25 are formed in the communicating vessel 23, and the first cavity 24 and the second cavity 25 are respectively connected to the oil cylinder 2;

[0074] The switching assembly further includes an adjustment structure disposed in the said, the adjustment structure being electrically connected to the pressure sensor 22, the adjustment structure including a second blocking member 28 and a first blocking member 27 disposed in the first cavity 24 and the second cavity 25 respectively, and a staggered second conducting hole 31 is disposed on the first blocking member 27 and the second blocking member 28;

[0075] The adjustment structure further includes a stepper motor 26 fixedly mounted on the communicating vessel 23, and the output shaft of the stepper motor 26 is connected to two sets of switching members 29 respectively slidingly fitted with the first blocking member 27 and the second blocking member 28, and the two sets of switching members 29 are provided with coaxial first conducting holes 30;

[0076] It should also be noted that a displacement sensor (not shown in the figure) is provided on the driven member 18 , and the stepping motor 26 is electrically connected to the displacement sensor and the pressure sensor 22 .

[0077] In detail, the first cavity 24 is connected to the oil return pipe of the external oil pumping assembly, and the second cavity 25 is connected to the oil inlet pipe of the external oil pumping device. When pumping oil toward the cylinder 2, the first conducting hole 30 on the switching member 29 and the second conducting hole 31 on the first blocking member 27 are in an overlapping state, and the first conducting hole 30 on another set of switching members 29 and the second conducting hole 31 on the second blocking member 28 are in a misaligned state. At this time, the hydraulic oil can enter the cylinder 2 through the second cavity 25. At this time, since the second conducting hole 31 on the second blocking member 28 is in a blocked state, the hydraulic oil in the cylinder 2 can be disconnected from the oil return pipe. When the oil pressure in the cylinder 2 rises, the oil return pipe will not be subjected to the oil pressure, thereby reducing the risk of its rupture and separation from the corresponding interface causing pressure loss in the cylinder 2.

[0078] Similarly, when the hydraulic oil is being withdrawn, the first conducting hole 30 on the switching member 29 and the second conducting hole 31 on the first blocking member 27 are in a misaligned state, and the first conducting hole 30 on another set of switching members 29 and the second conducting hole 31 on the second blocking member 28 are in an overlapping state. At this time, the hydraulic oil can enter the external oil pumping device through the return oil pipe, and in this state, the oil inlet pipe will not be subjected to oil pressure, thereby reducing the risk of it rupturing and separating from the corresponding interface to cause pressure loss in the oil cylinder 2.

[0079] When pumping oil to drive the piston rod 3 to move upward, if the oil pressure in the cylinder 2 exceeds the preset value, the pressure sensor 22 can control the stepper motor 26 to operate, so that the second conducting holes 31 on the first blocking member 27 and the second blocking member 28 are both in a blocked state. At this time, the oil inlet pipe and the oil return pipe are both disconnected, and the oil pressure in the cylinder 2 is prevented from further rising, thereby avoiding the risk of the oil inlet pipe breaking and separating from the corresponding structure.

[0080] Furthermore, when the hydraulic oil leaks and causes the piston rod 3 to lose speed and move downward, the follower 18 can be actuated to lock the follower plate 4 through the locking plate 21. At this time, the displacement sensor controls the stepper motor 26 to actuate, so that the second conducting holes 31 on the first blocking member 27 and the second blocking member 28 are both in a blocked state, so as to ensure the hydraulic oil pressure in the cylinder 2 as much as possible and maintain the height of the piston rod 3. This cooperates with the locking of the follower plate 4 to improve the stability of the piston rod 3 after being locked.

[0081] Through the above-mentioned arrangement, the oil inlet pipe and the oil return pipe can be independently connected, and when the hydraulic oil flows through the oil inlet pipe, the oil return pipe can be cut off from the external oil pumping device. When the hydraulic oil flows through the oil return pipe, the oil inlet pipe can be cut off from the external oil pumping device, thereby reducing the risk of the oil inlet pipe and the oil return pipe being broken or detached from the corresponding interface and causing pressure loss in the oil cylinder 2. At the same time, when the hydraulic oil leaks, the oil inlet pipe and the oil return pipe can be synchronously cut off from the external oil pumping device to ensure the hydraulic oil pressure in the oil cylinder 2 as much as possible while maintaining the height of the piston rod 3. This cooperates with the locking of the follower plate 4 to improve the stability of the piston rod 3 after stalling.

[0082] As an embodiment of the present invention, a working method of the hydraulic cylinder anti-leakage detection mechanism for a vacuum laminator is also proposed, comprising the following steps:

[0083] Step 1: Connect the switching assembly to the external oil pumping device through pipelines;

[0084] Step 2: Start the external oil pumping device to pump the hydraulic oil into the oil cylinder 2, so that the piston rod 3 rises;

[0085] Step 3: When the oil pressure in the oil cylinder 2 exceeds a preset value, the switching component can cut off the oil pipeline between the external oil pump device and the oil cylinder 2;

[0086] Step 4: When the oil cylinder 2 loses pressure due to hydraulic oil leakage, the piston rod 3 will drive the follower plate 4 to move downward at a stall speed, and when the protrusion 5 abuts against the energy storage assembly, the trigger assembly will move away from the follower plate 4 and drive the reverse extension assembly to be inserted into the locking groove 6, so that the height of the piston rod 3 is locked.

[0087] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0088] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydraulic cylinder anti-leakage detection mechanism for a vacuum laminating machine, comprising a base (1), a cylinder (2) being arranged on the base (1), and a piston rod (3) being installed in the cylinder (2); It is characterized in that Also includes: A follower plate (4) connected to the piston rod (3), wherein a plurality of groups of protrusions (5) are equidistantly arranged on the follower plate (4); An energy storage component connected to the oil cylinder (2), wherein the energy storage component can be triggered by the protrusion (5) to move toward or away from the follower plate (4); A reverse extension component connected to the energy storage component, wherein when the energy storage component moves away from the follower plate (4), the reverse extension component can be inserted into a locking groove (6) equidistantly arranged on the follower plate (4); A switching component is connected to the oil cylinder (2), and the switching component can cut off the oil pipeline connected to the oil cylinder (2) when the energy storage component moves away from the follower plate (4).

2. The anti-leakage detection mechanism for a hydraulic cylinder for a vacuum laminator according to claim 1 is characterized in that: The oil cylinder (2) is connected to a connecting frame (7), the energy storage assembly comprises a guide portion (10) fixedly mounted on the connecting frame (7), a transverse rod (9) is arranged on the guide portion (10), a first abutment wheel (8) adapted to the protrusion (5) is rotatably mounted on one end of the transverse rod (9), and two groups of symmetrical inclined portions (17) are arranged at the bottom of the transverse rod (9), and a downwardly protruding outer protrusion is arranged at the connection between the two groups of inclined portions (17); The energy storage assembly further comprises an elastic structure arranged on the connecting frame (7), and the elastic structure and the inclined portion (17) are in rolling cooperation.

3. The anti-leakage detection mechanism for a hydraulic cylinder for a vacuum laminator according to claim 2 is characterized in that: The elastic structure comprises a first slide groove (701) arranged on the connecting frame (7), a lifting member (15) is slidably installed in the first slide groove (701), and the lifting member (15) is connected to the inner wall of the first slide groove (701) via a columnar spring (16); A second abutment wheel (14) is also rotatably mounted on the lifting member (15). When the piston rod (3) stalls and descends, the second abutment wheel (14) can move from one set of inclined portions (17) to the other set of inclined portions (17).

4. The anti-leakage detection mechanism for a hydraulic cylinder for a vacuum laminator according to claim 3, characterized in that: A counterweight part (11) is fixedly mounted on one end of the transverse shift rod (9) away from the first abutment wheel (8).

5. The anti-leakage detection mechanism for a hydraulic cylinder for a vacuum laminator according to claim 4, characterized in that: The connecting frame (7) is also provided with a second slide groove (702) and a third slide groove (703) which are perpendicular to each other; The reverse extension assembly comprises a follower (18) slidably mounted in the second slide groove (702) and a bracket (20) slidably mounted in the third slide groove (703), a locking plate (21) being detachably connected to the bracket (20), the locking plate (21) being adapted to the locking groove (6), and the bracket (20) and the follower (18) being connected via a support rod (19); The reverse extension assembly also includes a slotted shaft structure connecting the follower (18) and the counterweight portion (11), and when the second abutment wheel (14) moves in one set of the inclined portions (17) and does not move to the outer protrusion, the follower (18) remains stationary.

6. The anti-leakage detection mechanism for a hydraulic cylinder for a vacuum laminator according to claim 5, characterized in that: The slotted shaft structure comprises a connecting plate (12) fixedly connected to the counterweight portion (11), and a convex shaft (13) is installed at the end of the connecting plate (12); The grooved shaft structure also includes a horizontal groove (1801) and an inclined groove (1802) arranged on the follower (18) and facing one side of the convex shaft (13); the length of the horizontal groove (1801) is the same as the projection length of the inclined portion (17) and the inclined groove (1802) on the horizontal plane.

7. The anti-leakage detection mechanism for a hydraulic cylinder for a vacuum laminator according to claim 1, characterized in that: The switching assembly comprises a pressure sensor (22) connected to the oil cylinder (2) and a communicating vessel (23) arranged on the base (1), wherein a first cavity (24) and a second cavity (25) are formed in the communicating vessel (23), and the first cavity (24) and the second cavity (25) are respectively connected to the oil cylinder (2); The switching assembly further comprises an adjusting structure arranged inside the switch, wherein the adjusting structure is electrically connected to the pressure sensor (22).

8. The anti-leakage detection mechanism for a hydraulic cylinder of a vacuum laminator according to claim 7, characterized in that: The regulating structure comprises a second blocking member (28) and a first blocking member (27) respectively arranged in the first cavity (24) and the second cavity (25); the first blocking member (27) and the second blocking member (28) are provided with staggered second conducting holes (31); The regulating structure also includes a stepper motor (26) fixedly mounted on the communicating vessel (23); the output shaft of the stepper motor (26) is connected to two sets of switching members (29) which are respectively slidably fitted with the first blocking member (27) and the second blocking member (28); and the two sets of switching members (29) are provided with coaxial first conducting holes (30).

9. A working method of the anti-leakage detection mechanism of the hydraulic cylinder for a vacuum laminator according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Connect the switching assembly to the external oil pumping device through pipelines; Step 2: Activate the external oil pumping device to pump the hydraulic oil into the oil cylinder (2) to raise the piston rod (3); Step 3: When the oil pressure in the oil cylinder (2) exceeds a preset value, the switching component can cut off the oil pipeline between the external oil pump device and the oil cylinder (2); Step 4: When the oil cylinder (2) loses pressure due to hydraulic oil leakage, the piston rod (3) will drive the follower plate (4) to move downward at a stalled speed, and when the protrusion (5) abuts against the energy storage component, the trigger component moves away from the follower plate (4) and drives the reverse extension component to be inserted into the locking groove (6), so that the height of the piston rod (3) is locked.

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