Hydraulic guide structure of hydraulic press

Abstract

The present invention relates to the field of hydraulic guiding, and specifically to a hydraulic guiding structure of a hydraulic press, comprising a cylinder frame, which is used for connecting and supporting the guiding structure, a cylinder body fixedly installed inside the cylinder frame, a piston rod arranged inside the cylinder body, the piston rod slidably fitted inside the cylinder frame, a piston assembly fixedly connected to the outer side of the piston rod, and a semicircular retaining ring fixedly connected to the outer end of the piston assembly; a sealing mechanism, which is used for sealing and preventing hydraulic oil from flowing out; an exhaust mechanism, which is used for exhausting the air in the guiding structure, and the hydraulic guiding structure of the hydraulic press will allow the air inside the hydraulic oil to float out through a semipermeable membrane, thereby playing a role in exhausting the air that has entered into the hydraulic oil, and at the same time playing a role in removing the air in the hydraulic cylinder and preventing the mixing of air to cause creeping.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic guide technology, in particular to a hydraulic guide structure of a hydraulic press. Background Art

[0002] The hydraulic guide structure is a device or component used in the hydraulic system to guide and restrict the movement of moving parts (such as piston rods, plungers, etc.) in a predetermined direction and trajectory. It usually consists of a guide sleeve, a guide column, a guide ring, etc.

[0003] The existing hydraulic guide structure has the following problems: 1. Impurities remain in the hydraulic oil, which increases the friction between the piston and the cylinder body, causing high oil temperature and deterioration of the hydraulic oil. 2. The presence of impurities will cause excessive wear of components such as the cylinder barrel and piston rod, affecting service life and performance. 3. Air is mixed in the hydraulic oil, causing the piston rod to creep, resulting in unstable movement of the piston rod, with occasional stops and starts, and sudden speed increases and slowdowns. Summary of the invention

[0004] The present invention provides a hydraulic guide structure for a hydraulic press to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a hydraulic guide structure of a hydraulic press, comprising a cylinder frame, the cylinder frame is used to connect and support the guide structure, a cylinder body is fixedly installed inside the cylinder frame, a piston rod is arranged inside the cylinder body, the piston rod is slidably adapted inside the cylinder frame, a piston assembly is fixedly connected to the outer side of the piston rod, and a semicircular clamping ring is fixedly connected to the outer end of the piston assembly;

[0006] A sealing mechanism, which is used for sealing and preventing the hydraulic oil from flowing out;

[0007] An exhaust mechanism, the exhaust mechanism is used to exhaust the air in the guide structure;

[0008] A circulation mechanism, which is used for replacing and filtering the hydraulic oil;

[0009] The sealing mechanism is fixedly mounted inside the cylinder frame, the exhaust mechanism is fixedly mounted on the cylinder body, and the circulation mechanism is fixedly mounted on the cylinder frame;

[0010] The piston assembly includes a piston, the outer end of which is fixedly connected to a semicircular retaining ring, and the piston is fixedly connected to the outside of a piston rod, wherein the outer side of the piston is slidably matched with the inner wall of the cylinder body and is sealed, and the outer side of the piston is respectively fixedly connected with a Y-shaped sealing ring and a No. 2 support ring.

[0011] Preferably, the sealing mechanism includes a sealing assembly, to which a short rail is fixedly connected, the internal sliding adapter of the short rail is equipped with a slide, the outer side of the slide is fixedly connected to a folding rod, both ends of the folding rod are symmetrically connected to connecting rods, and the end of the folding rod away from the slide is fixedly connected to a blocking plate.

[0012] Preferably, the sealing assembly includes a ring block, which is fixedly connected to the inside of the cylinder frame, a sticking ring is fixedly connected to the top of the inner cavity of the ring block, a reset strip is fixedly connected to the bottom of the sticking ring, and an air blocking plate is fixedly connected to the bottom of the reset strip, wherein a circular hole is opened on the outer side of the air blocking plate, and a No. 1 ventilation pipe and a No. 2 ventilation pipe are symmetrically arranged on both sides of the air blocking plate, and the No. 1 ventilation pipe and the No. 2 ventilation pipe are both fixedly installed inside the ring block.

[0013] Preferably, the bottoms of the No. 1 and No. 2 ventilation pipes are fixedly connected with air bags, the outer sides of the air bags and the No. 1 ventilation pipe are fixedly connected with sealing gaskets, the sealing gaskets are fixedly connected to the bottom of the ring block, and the center of the bottom of the ring block is fixedly connected to a No. 1 support ring.

[0014] Preferably, extension pads are symmetrically provided at both ends of the airbag, and the extension pads are slidably adapted to the bottom of the ring block. An elastic strip is fixedly connected to one end of the extension pad close to the airbag, and an elastic strip is fixedly connected to one end of the elastic strip away from the extension pad. A support rod is provided on the side of the support plate, and the support rod and the support plate are fixedly connected to the bottom of the ring block.

[0015] Preferably, the exhaust mechanism includes an air outlet pipe, which is fixedly connected to the top of the cylinder body, a circular plate is fixedly connected to the inside of the air outlet pipe, a semipermeable membrane is fixedly connected to the surface of the circular plate, and a sealing sleeve is fixedly connected to the center of the circular plate.

[0016] Preferably, a spring is fixedly connected to the bottom of the sealing sleeve, an end of the spring away from the sealing sleeve is fixedly connected to an air blocking tube, the air blocking tube is slidably fitted on the inner side of the sealing sleeve, and the outer side of the air blocking tube is squeezed and fitted with the circular plate.

[0017] Preferably, the circulation mechanism includes a fluid exchange tube, which is fixedly connected to the top of the cylinder frame, a center plate is fixedly connected to the central part of the inner cavity of the fluid exchange tube, a plate seat is fixedly connected to the inner side of the fluid exchange tube, a filter plate is rotatably connected to the inside of the plate seat, and one end of the filter plate away from the plate seat is extruded and fitted with the center plate, an impurity frame is arranged directly below the plate seat, and the impurity frame is sleeved on the outside of the fluid exchange tube and extends to the inside.

[0018] Preferably, a support No. 1 and a support No. 2 are symmetrically connected to both sides of the center plate, a one-way plate No. 1 is rotatably connected inside the support No. 1, a magnet No. 1 is fixedly connected to the top of the one-way plate No. 1, a magnet No. 2 is arranged above the one-way plate No. 1, and the magnet No. 2 is fixedly connected to the outer side of the center plate.

[0019] Preferably, the No. 2 one-way plate is rotatably connected inside the No. 2 support, the No. 3 magnet is fixedly connected to the top of the No. 2 one-way plate, and the No. 4 magnet is arranged above the No. 2 one-way plate, and the No. 4 magnet is fixedly connected to the inner side of the fluid exchange tube.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The extension pad is pulled out from the ring block and enters the cylinder frame, so several extended extension pads and bulging air bags will form a ring and wrap the piston rod, thereby playing a sealing role inside the hydraulic guide mechanism. At the same time, the air bag can be adaptively adjusted according to the movement of the piston rod and pressure changes to maintain a good sealing effect.

[0022] 2. The bottom structure of the No. 1 ventilation pipe is consistent with that of the No. 2 ventilation pipe, so the air bag at the bottom of the No. 1 ventilation pipe will also bulge, and the extension pad will also extend to wrap and seal the piston rod, which will increase the sealing treatment and perform a double sealing effect.

[0023] 3. The material of the semipermeable membrane is polytetrafluoroethylene, which is a polymer membrane that can only allow air to pass through but not hydraulic oil. Then the air inside the hydraulic oil will float out through the semipermeable membrane, thereby discharging the air that has penetrated into the hydraulic oil. At the same time, it also plays a role in removing the air in the hydraulic cylinder to prevent air from mixing in and causing creeping.

[0024] 4. The hydraulic oil passes through the No. 1 one-way plate and enters the right chamber of the fluid exchange tube, where the interior of the fluid exchange tube is divided into two chambers by the center plate. The hydraulic oil is then impacted by the filter plate, so the impurities inside the hydraulic oil are filtered by the filter plate, thereby reducing excessive wear of components such as the cylinder and piston due to impurities, while also avoiding impact and vibration, reducing stability and noise, and avoiding stuck movement.

[0025] 5. The benefit of allowing the hydraulic oil to flow through two chambers is that the response speed is improved: the double oil pipes can make the hydraulic oil flow in and out faster and smoother, speeding up the action response of the hydraulic cylinder, especially in some occasions where higher action speed is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the external structure of the hydraulic guide structure of the hydraulic press of the present invention.

[0027] Figure 2 It is a schematic cross-sectional structural diagram of the present invention as a whole.

[0028] Figure 3 It is a structural schematic diagram of the sealing mechanism of the present invention.

[0029] Figure 4 It is an enlarged structural schematic diagram of some parts of the sealing mechanism of the present invention.

[0030] Figure 5 It is a schematic cross-sectional structural diagram of the sealing assembly of the present invention.

[0031] Figure 6 It is a schematic cross-sectional view of the upper half of the sealing assembly of the present invention.

[0032] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0033] Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0034] Fig. 9 It is a schematic diagram of the side sectional structure of the sealing assembly of the present invention.

[0035] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at point C in the middle.

[0036] Fig.11 It is a schematic cross-sectional structural diagram of the exhaust mechanism of the present invention.

[0037] Fig.12 It is a schematic cross-sectional structural diagram of the piston assembly of the present invention.

[0038] Fig.13 It is a structural schematic diagram of the circulation mechanism of the present invention.

[0039] Fig.14 For the present invention Fig.13 Schematic diagram of the enlarged structure at D in the middle.

[0040] In the figure: 1, cylinder frame; 2, cylinder body; 3, piston rod; 4, sealing mechanism; 5, exhaust mechanism; 6, circulation mechanism; 7, piston assembly; 8, semicircular retaining ring; 41, sealing assembly; 42, short rail; 43, slide; 44, folding rod; 45, connecting rod; 46, blocking plate; 411, sticking ring; 412, reset strip; 413, air blocking plate; 414, No. 1 vent pipe; 415, No. 2 vent pipe; 416, air bag; 417, sealing pad; 418, No. 1 support ring; 419, ring block; 410, extension pad; 4101, elastic strip ;4102, support plate;4103, support rod;51, air outlet pipe;52, circular plate;53, sealing sleeve;54, air blocking pipe;55, spring;56, semipermeable membrane;71, piston;72, Y-shaped sealing ring;73, No. 2 support ring;61, liquid exchange tube;62, center plate;63, plate seat;64, filter plate;65, impurity frame;66, No. 1 support;67, No. 2 support;68, No. 1 one-way plate;69, No. 1 magnet;60, No. 2 magnet;601, No. 2 one-way plate;602, No. 3 magnet;603, No. 4 magnet. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that 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 making creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 14 The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a cylinder frame 1, which is used to connect and support the guide structure. A cylinder body 2 is fixedly installed inside the cylinder frame 1, and a piston rod 3 is arranged inside the cylinder body 2. The piston rod 3 is slidably adapted inside the cylinder frame 1. A piston assembly 7 is fixedly connected to the outer side of the piston rod 3, and a semicircular clamping ring 8 is fixedly connected to the outer end of the piston assembly 7;

[0043] A sealing mechanism 4, which is used for sealing and preventing the hydraulic oil from flowing out;

[0044] An exhaust mechanism 5, the exhaust mechanism 5 is used to exhaust the air in the guide structure;

[0045] A circulation mechanism 6, which is used for replacing and filtering the hydraulic oil;

[0046] The sealing mechanism 4 is fixedly mounted inside the cylinder frame 1 , the exhaust mechanism 5 is fixedly mounted on the cylinder body 2 , and the circulation mechanism 6 is fixedly mounted on the cylinder frame 1 .

[0047] The sealing mechanism 4 includes a sealing component 41, a short rail 42 is fixedly connected to the sealing component 41, a slide 43 is slidably adapted inside the short rail 42, a folding rod 44 is fixedly connected to the outside of the slide 43, connecting rods 45 are symmetrically connected to the two ends of the folding rod 44, and a blocking plate 46 is fixedly connected to the end of the folding rod 44 away from the slide 43. When the gas is filled into the ring block 419 to a sufficient capacity, the slide 43 is manually pushed, so that the folding rod 44 fixedly connected to the outside of the slide 43 will move with the blocking plate 46, and the blocking plate 46 will block the opening at the top of the ring block 419 to prevent the gas from leaking out. The above-mentioned sealing mechanism 4 is tightly fitted, and the filled gas cannot leak out.

[0048] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, the sealing assembly 41 includes a ring block 419, which is fixedly connected to the inside of the cylinder frame 1, and the top of the inner cavity of the ring block 419 is fixedly connected to a sticking ring 411, and the bottom of the sticking ring 411 is fixedly connected to a reset strip 412, and the bottom of the reset strip 412 is fixedly connected to an air blocking plate 413, wherein a circular hole is opened on the outer side of the air blocking plate 413, and a No. 1 ventilation pipe 414 and a No. 2 ventilation pipe 415 are symmetrically arranged on both sides of the air blocking plate 413, and the No. 1 ventilation pipe 414 and the No. 2 ventilation pipe 415 are both fixedly installed in the ring block 419, and the bottoms of the No. 1 ventilation pipe 414 and the No. 2 ventilation pipe 415 are both fixedly connected to air bags 416, and the outer sides of the air bags 416 and the No. 1 ventilation pipe 414 are fixedly connected to sealing pads 417, and the sealing pads 417 are fixedly connected. It is connected to the bottom of the ring block 419, and the central part of the bottom of the ring block 419 is fixedly connected to a No. 1 support ring 418. Extension pads 410 are symmetrically arranged at both ends of the air bag 416. When the gas pressure is increased, the gas will drive the air blocking plate 413 to move downward. At this time, the circular hole opened on the air blocking plate 413 will move downward and will no longer be connected with the No. 2 ventilation pipe 415. At the same time, the gas will enter the No. 1 ventilation pipe 414 as the air blocking plate 413 moves downward. The bottom structure of the No. 1 ventilation pipe 414 is consistent with that of the No. 2 ventilation pipe 415. Therefore, the air bag 416 at the bottom of the No. 1 ventilation pipe 414 will also bulge, and the extension pad 410 will also extend out and wrap and seal the piston rod 3, which will increase the sealing treatment and perform double sealing. The extension pad 410 is slidably adapted to the bottom of the ring block 419, and one end of the extension pad 410 close to the airbag 416 is fixedly connected with an elastic strip 4101. Before injecting hydraulic oil, the inside of the ring block 419 is inflated through an external inflation device, wherein the gas enters from the top of the ring block 419 and squeezes the air blocking plate 413, wherein the reset strip 412 fixedly connected to the top of the air blocking plate 413 is elastic. If the gas pressure is small, the gas will enter the cavity of the No. 2 ventilation pipe 415 through the circular hole on the surface of the air blocking plate 413, and the bottom of the No. 2 ventilation pipe 415 is connected to the airbag 416, so the airbag 416 will swell due to inflation, and at the same time, the swollen airbag 416 will squeeze the airbag set therein The extension pads 410 on both sides are squeezed so that the extension pads 410 extend outward along the bottom of the ring block 419, wherein the elastic strip 4101 fixedly connected to the inner end of the extension pad 410 is elastic, and the extension pad 410 is then drawn out of the ring block 419 and enters the cylinder frame 1, so that a plurality of extended extension pads 410 and the bulging airbag 416 form a ring and wrap the piston rod 3, thereby playing a sealing role inside the hydraulic guide mechanism, and at the same time the airbag 416 can be adaptively adjusted according to the movement of the piston rod 3 and the pressure change to maintain a good sealing effect, and the end of the elastic strip 4101 away from the extension pad 410 is fixedly connected to a support plate 4102, and a support rod 4103 is arranged on the side of the support plate 4102,The support rod 4103 and the support plate 4102 are both fixedly connected to the bottom of the ring block 419.

[0049] like Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, the exhaust mechanism 5 includes an air outlet pipe 51, which is fixedly connected to the top of the cylinder body 2, and the inside of the air outlet pipe 51 is fixedly connected to a circular plate 52, and the surface of the circular plate 52 is fixedly connected to a semipermeable membrane 56, and the central part of the circular plate 52 is fixedly connected to a sealing sleeve 53, and the bottom of the sealing sleeve 53 is fixedly connected to a spring 55, and the end of the spring 55 away from the sealing sleeve 53 is fixedly connected to an air blocking pipe 54, and the air blocking pipe 54 is slidably fitted on the inner side of the sealing sleeve 53, and the outer side of the air blocking pipe 54 is squeezed and fitted with the circular plate 52. When the hydraulic oil enters the rod cavity, the piston 71 or the plunger will move toward the rodless cavity. At this time, the hydraulic oil will enter the air outlet pipe 51 and press the blocking pipe 54. The air pipe 54 is squeezed upward, wherein the air blocking pipe 54 compresses the spring 55, and at the same time, the outer side of the air blocking pipe 54 is tightly attached to the top of the circular plate 52, and then the air blocking pipe 54 is subjected to pressure and moves upward along the sealing sleeve 53, at this time, the semipermeable membrane 56 blocked by the air blocking pipe 54 will be exposed, wherein the material of the semipermeable membrane 56 is polytetrafluoroethylene, which is a polymer membrane that can only allow air to pass through, but hydraulic oil cannot pass through, and then the air inside the hydraulic oil will float out through the semipermeable membrane 56, thereby playing a role in discharging the air that has entered the hydraulic oil to the outside, and at the same time playing a role in removing the air in the hydraulic cylinder to prevent air from mixing in and causing creeping.

[0050] The piston assembly 7 includes a piston 71, the outer end of the piston 71 is fixedly connected to the semicircular retaining ring 8, and the piston 71 is fixedly connected to the outer side of the piston rod 3, wherein the outer side of the piston 71 is slidably adapted to the inner wall of the cylinder body 2 and is sealed, and the outer side of the piston 71 is respectively fixedly connected with a Y-shaped sealing ring 72 and a No. 2 support ring 73. When the hydraulic oil enters the rodless cavity of the cylinder body 2, it will push the piston 71 or the plunger to move toward the rod cavity, thereby realizing the extension action and generating thrust; conversely, when the hydraulic oil enters the rod cavity, the piston or the plunger will move toward the rodless cavity, realizing the retraction action and generating pulling force.

[0051] The circulation mechanism 6 includes a liquid exchange tube 61, which is fixedly connected to the top of the cylinder frame 1. A center plate 62 is fixedly connected to the central part of the inner cavity of the liquid exchange tube 61. A plate seat 63 is fixedly connected to the inner side of the liquid exchange tube 61. A filter plate 64 is rotatably connected inside the plate seat 63. The end of the filter plate 64 away from the plate seat 63 is squeezed and adapted to the center plate 62. An impurity frame 65 is arranged directly below the plate seat 63. The impurity frame 65 is sleeved on the outer side of the liquid exchange tube 61 and extends to the inside. A No. 1 support 66 and a No. 2 support 67 are symmetrically connected to both sides of the center plate 62. A No. 1 one-way plate 68 is rotatably connected inside the No. 1 support 66. A No. 1 one-way plate 68 is fixedly connected to the top of the No. 1 one-way plate 68. 69, as the piston 71 moves toward the rodless chamber, the hydraulic oil that has exhausted the gas will hit the No. 1 one-way plate 68. Because the top of the No. 1 one-way plate 68 is fixed with a No. 1 magnet 69, and there is a repulsive relationship between the No. 1 magnet 69 and the No. 2 magnet 60, the hydraulic oil will encounter a certain resistance when the No. 1 one-way plate 68 is deflected, thereby giving the exhaust mechanism 5 a certain amount of time to exhaust the air inside the hydraulic oil. Then, the No. 1 one-way plate 68 will deflect upward through the No. 1 support 66, and the hydraulic oil will pass over the No. 1 one-way plate 68 and enter the right chamber of the liquid exchange tube 61, where the inside of the liquid exchange tube 61 It is divided into two chambers by the center plate 62, and then the hydraulic oil will be hit by the filter plate 64, so the impurities inside the hydraulic oil will be filtered by the filter plate 64, thereby reducing the excessive wear of components such as the cylinder body 2 and the piston 71 with impurities, while also avoiding impact and vibration, reducing stability and noise problems, and also avoiding stuck movement. A second magnet 60 is arranged above the No. 1 one-way plate 68, and the second magnet 60 is fixedly connected to the outer side of the center plate 62. The interior of the No. 2 support 67 is rotatably connected to the No. 2 one-way plate 601, and the top of the No. 2 one-way plate 601 is fixedly connected to the No. 3 magnet 602, and the No. 2 one-way plate 601 is arranged above A fourth magnet 603 is arranged, and the fourth magnet 603 is fixedly connected to the inner side of the fluid exchange tube 61. Similarly, the hydraulic oil will be poured into the left chamber of the fluid exchange tube 61. The advantages of dividing the fluid exchange tube 61 into two chambers to allow the hydraulic oil to flow include improving the response speed: the double oil pipes can make the hydraulic oil flow in and out faster and smoother, speeding up the action response of the hydraulic cylinder, especially in some occasions with high requirements on the action speed; reducing pressure loss: it can reduce the resistance and pressure loss of the oil when flowing in a single pipeline, thereby improving the system efficiency and energy utilization; enhancing working stability: it helps to keep the hydraulic system running more smoothly, especially under complex actions or high load conditions.

[0052] When the present invention is in use: first, when the hydraulic oil enters the rodless chamber of the cylinder body 2, it will push the piston 71 or the plunger to move toward the rod chamber, thereby realizing the extension action and generating thrust; conversely, when the hydraulic oil enters the rod chamber, the piston or plunger will move toward the rodless chamber, realizing the retraction action and generating pulling force. Before injecting the hydraulic oil, the interior of the ring block 419 is first inflated by an external inflation device, wherein the gas will enter from the top of the ring block 419 and squeeze the air blocking plate 413. If the gas pressure is too small, the gas will enter the cavity of the No. 2 vent pipe 415 through the circular hole on the surface of the air blocking plate 413. The bottom of the No. 2 vent pipe 415 is connected to the air bag 416, so the air bag 416 will swell due to inflation, and at the same time, the swollen air bag 416 will press the air bag 416 set thereon. The extension pads 410 on both sides are squeezed so that the extension pads 410 extend outward along the bottom of the ring block 419. Then, if the pressure of the gas is increased, the gas will drive the air blocking plate 413 to move downward. At this time, the circular hole opened on the air blocking plate 413 will move downward and will no longer be connected to the No. 2 ventilation pipe 415. The gas will enter the No. 1 ventilation pipe 414 as the air blocking plate 413 moves downward, and the bottom structure of the No. 1 ventilation pipe 414 is consistent with the No. 2 ventilation pipe 415.

[0053] When the hydraulic oil enters the rod chamber, the piston 71 or plunger will move toward the rodless chamber, and part of the hydraulic oil will enter the air outlet pipe 51 and squeeze the air blocking pipe 54 upward, and then the air blocking pipe 54 will move upward along the sealing sleeve 53, and then the semipermeable membrane 56 blocked by the air blocking pipe 54 will be exposed, and then the air inside the hydraulic oil will float out through the semipermeable membrane 56. Then the hydraulic oil will hit the first one-way plate 68, and then the first one-way plate 68 will be deflected upward through the first support 66, and then the hydraulic oil will pass over the first one-way plate 68 and enter the liquid exchange pipe 61, and then the hydraulic oil will be hit by the filter plate 64, and then the impurities inside the hydraulic oil will be filtered by the filter plate 64.

[0054] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A hydraulic guide structure of a hydraulic press, characterized in that: include: A cylinder frame (1), the cylinder frame (1) being used for connecting and supporting the guide structure, a cylinder body (2) being fixedly mounted inside the cylinder frame (1), a piston rod (3) being arranged inside the cylinder body (2), the piston rod (3) being slidably fitted inside the cylinder frame (1), a piston assembly (7) being fixedly connected to the outer side of the piston rod (3), and a semicircular clamping ring (8) being fixedly connected to the outer end of the piston assembly (7); A sealing mechanism (4), the sealing mechanism (4) being used for sealing and preventing hydraulic oil from flowing out; An exhaust mechanism (5), the exhaust mechanism (5) being used to exhaust air in the guide structure; A circulation mechanism (6), the circulation mechanism (6) is used for replacing and filtering the hydraulic oil; The sealing mechanism (4) is fixedly mounted inside the cylinder frame (1), the exhaust mechanism (5) is fixedly mounted on the cylinder body (2), and the circulation mechanism (6) is fixedly mounted on the cylinder frame (1); The piston assembly (7) comprises a piston (71), the outer end of the piston (71) is fixedly connected to a semicircular retaining ring (8), the piston (71) is fixedly connected to the outer side of the piston rod (3), the outer side of the piston (71) is slidably matched with the inner wall of the cylinder body (2) and is sealed, and the outer side of the piston (71) is respectively fixedly connected to a Y-shaped sealing ring (72) and a second support ring (73); The sealing mechanism (4) comprises a sealing assembly (41), a short rail (42) being fixedly connected to the sealing assembly (41), a sliding plate (43) being adapted for sliding inside the short rail (42), a folding rod (44) being fixedly connected to the outside of the sliding plate (43), connecting rods (45) being symmetrically connected to both ends of the folding rod (44), and a blocking plate (46) being fixedly connected to one end of the folding rod (44) away from the sliding plate (43); The sealing assembly (41) comprises a ring block (419), wherein the ring block (419) is fixedly connected to the inside of the cylinder frame (1), a sticking ring (411) is fixedly connected to the top of the inner cavity of the ring block (419), a reset strip (412) is fixedly connected to the bottom of the sticking ring (411), and a gas blocking plate (413) is fixedly connected to the bottom of the reset strip (412), wherein a circular hole is provided on the outer side of the gas blocking plate (413), and a first ventilation pipe (414) and a second ventilation pipe (415) are symmetrically arranged on both sides of the gas blocking plate (413), and the first ventilation pipe (414) and the second ventilation pipe (415) are both fixedly installed inside the ring block (419); The bottoms of the No. 1 ventilation pipe (414) and the No. 2 ventilation pipe (415) are both fixedly connected to air bags (416), the outer sides of the air bags (416) and the No. 1 ventilation pipe (414) are both fixedly connected to sealing pads (417), the sealing pads (417) are fixedly connected to the bottom of the ring block (419), and the center of the bottom of the ring block (419) is fixedly connected to the No. 1 support ring (418).

2. The hydraulic guide structure of the hydraulic press according to claim 1, characterized in that: Extension pads (410) are symmetrically arranged at both ends of the airbag (416), and the extension pads (410) are slidably adapted to the bottom of the ring block (419). An end of the extension pad (410) close to the airbag (416) is fixedly connected to an elastic strip (4101), and an end of the elastic strip (4101) away from the extension pad (410) is fixedly connected to a support plate (4102). A support rod (4103) is arranged on the side of the support plate (4102), and the support rod (4103) and the support plate (4102) are both fixedly connected to the bottom of the ring block (419).

3. The hydraulic guide structure of the hydraulic press according to claim 1, characterized in that: The exhaust mechanism (5) comprises an air outlet pipe (51), the air outlet pipe (51) being fixedly connected to the top of the cylinder body (2), a circular plate (52) being fixedly connected to the interior of the air outlet pipe (51), a semi-permeable membrane (56) being fixedly connected to the surface of the circular plate (52), and a sealing sleeve (53) being fixedly connected to the center of the circular plate (52).

4. The hydraulic guide structure of the hydraulic press according to claim 3, characterized in that: A spring (55) is fixedly connected to the bottom of the sealing sleeve (53); an end of the spring (55) away from the sealing sleeve (53) is fixedly connected to an air blocking pipe (54); the air blocking pipe (54) is slidably fitted on the inner side of the sealing sleeve (53); and the outer side of the air blocking pipe (54) is pressed and fitted with the circular plate (52).

5. The hydraulic guide structure of the hydraulic press according to claim 1, characterized in that: The circulation mechanism (6) comprises a liquid exchange pipe (61), wherein the liquid exchange pipe (61) is fixedly connected to the top of the cylinder frame (1), a center plate (62) is fixedly connected to the central part of the inner cavity of the liquid exchange pipe (61), a plate seat (63) is fixedly connected to the inner side of the liquid exchange pipe (61), a filter plate (64) is rotatably connected to the inside of the plate seat (63), an end of the filter plate (64) away from the plate seat (63) is pressed and fitted with the center plate (62), and an impurity frame (65) is arranged directly below the plate seat (63), and the impurity frame (65) is sleeved on the outer side of the liquid exchange pipe (61) and extends to the inside.

6. The hydraulic guide structure of the hydraulic press according to claim 5, characterized in that: A first support (66) and a second support (67) are symmetrically connected to both sides of the center plate (62); a first one-way plate (68) is rotatably connected inside the first support (66); a first magnet (69) is fixedly connected to the top of the first one-way plate (68); a second magnet (60) is arranged above the first one-way plate (68); and the second magnet (60) is fixedly connected to the outer side of the center plate (62).

7. The hydraulic guide structure of the hydraulic press according to claim 6, characterized in that: The second support (67) is rotatably connected to a second one-way plate (601) inside, the top of the second one-way plate (601) is fixedly connected to a third magnet (602), a fourth magnet (603) is arranged above the second one-way plate (601), and the fourth magnet (603) is fixedly connected to the inner side of the liquid exchange tube (61).

Images