Double-station hydraulic press hydraulic cylinder structure easy to release pressure

Abstract

The utility model discloses a double-station hydraulic press hydraulic cylinder structure easy to release pressure, which comprises an upper cylinder and a lower cylinder, the upper cylinder and the lower cylinder are respectively connected with an oil pressure adjusting device, an upper rubber sheet unit is arranged on the bottom surface of the upper cylinder, a lower rubber sheet unit is arranged on the top surface of the lower cylinder, and the upper rubber sheet unit and the lower rubber sheet unit are in press fit. A concave-convex grain structure is arranged on the matching surface of the upper film unit and / or the lower film unit, and when the upper film unit and the lower film unit are mutually pressed, a gap structure for relieving pressure is formed between the matching surfaces of the upper film unit and the lower film unit. Compared with the prior art, the press fit matching surfaces of the rubber sheets are improved, so that after press fit of the upper and lower layers of rubber sheets is completed, the phenomenon that the rubber sheets are pulled when the upper and lower cylinder bodies are separated is avoided, the running smoothness of equipment is improved, and the service life of the rubber sheets is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe-making equipment, in particular to a hydraulic cylinder structure of a double-station hydraulic press which is easy to release pressure. Background Art

[0002] The hydraulic press is suitable for the bonding process of the outsole of casual shoes and various sports shoes. Fireproof hydraulic oil is injected into the cylinder, and the oil pump pressure is used to achieve all-round extrusion through high-strength elastic rubber sheets and the expansion and compression principle to achieve all-round fitting of the outsole. The processed soles are placed in a circular hydraulic cylinder based on the engineering principle for pressing and forming. However, when the rubber sheets in the existing hydraulic cylinder structure are pressurized, the upper and lower layers of rubber sheets are in close contact and surrounded to form a sealed space, forming a pressing reaction force, which strengthens the cylinder pressurization cycle and poor pressing effect; in addition, negative pressure is formed between the upper and lower layers of rubber sheets. When the upper and lower cylinder bodies are separated, the cylinder body forms a pulling force on the rubber sheets. After repeated use, the rubber sheets are prone to breakage, resulting in cylinder body decompression or even leakage. Therefore, it is necessary to improve it. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a double-station hydraulic press hydraulic cylinder structure that is easy to release pressure, so as to avoid the formation of a sealed space between the upper and lower layers of rubber sheets, to avoid the formation of a reaction force by air pressure during the pressurization or depressurization process of the cylinder, to improve the pressing quality and the stability of equipment operation, and to increase the service life of the rubber sheet.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a hydraulic cylinder structure of a double-station hydraulic press that is easy to release pressure, including an upper cylinder body and a lower cylinder body, the upper cylinder body and the lower cylinder body are respectively connected to an oil pressure regulating device, the bottom surface of the upper cylinder body is provided with an upper rubber unit, the top surface of the lower cylinder body is provided with a lower rubber unit, the upper rubber unit and the lower rubber unit are pressed together, the mating surfaces of the upper rubber unit and / or the lower rubber unit are provided with a concave-convex structure, and when the upper rubber unit and the lower rubber unit are pressed together, a gap structure for pressure relief is formed between the mating surfaces of the upper rubber unit and the lower rubber unit.

[0005] In a further technical solution, a convex structure is provided on the lower surface of the upper film unit, which includes a plurality of strip-shaped convex ribs extending radially, and each strip-shaped convex rib is spaced apart along the circumferential direction; a concave structure is provided on the upper surface of the lower film unit, which includes a plurality of strip-shaped grooves extending radially, and each strip-shaped groove is spaced apart along the circumferential direction; each strip-shaped convex rib and each strip-shaped groove are staggered up and down.

[0006] In a further technical solution, a circular groove is further provided at the center of the upper surface of the lower film unit.

[0007] In a further technical solution, the depth of the circular groove is 0.1 mm-0.5 mm.

[0008] In a further technical solution, the cross-section of the strip-shaped groove is semicircular, and the depth of the strip-shaped groove is 0.5 mm-2 mm.

[0009] In a further technical solution, the cross section of the strip-shaped convex rib is semicircular, and the protrusion height of the strip-shaped convex rib is 0.5 mm-2 mm.

[0010] In a further technical solution, the upper rubber unit and the lower rubber unit respectively include a rubber sheet body that is interchangeable with each other. The rubber sheet body is arranged in a concave disk shape, the upper surface of the rubber sheet body is arranged in a concave surface and forms a pressing surface of the lower cylinder body, and the upper surface of the rubber sheet body is provided with a concave structure; the lower surface of the rubber sheet body is arranged in a convex surface and forms a pressing surface of the upper cylinder body, and the lower surface of the rubber sheet body is provided with a convex structure.

[0011] In a further technical solution, the edge of the rubber sheet is formed with a connecting edge, the connecting edge is arranged in a circular ring, the upper surface of the connecting edge is formed with a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are radially spaced and form a sealing groove; the lower surface of the connecting edge is formed with a third sealing ring, and the third sealing ring is aligned with the projection of the sealing groove.

[0012] After adopting the above structure, the advantages of the utility model compared with the prior art are as follows: the utility model provides a hydraulic cylinder structure of a double-station hydraulic press that is easy to release pressure, and a concave-convex structure is set on the pressing and fitting surfaces of the rubber units serving as the upper cylinder body and the lower cylinder body to prevent the two rubber units from surrounding the soles and forming a negative pressure space after the soles are pressed, thereby ensuring the pressing quality of the soles and making the separation of the upper and lower cylinders smoother, thereby increasing the service life of the rubber units; a gap is left on the pressing and fitting surfaces of the rubber sheets of the upper cylinder body and the lower cylinder body, thereby reducing the air pressure resistance during pressurization and pressing, shortening the pressurization cycle, and achieving a better pressing effect; the upper rubber unit and the lower rubber unit are mutually compatible rubber sheets, thereby increasing the difficulty of assembly and maintenance of the hydraulic cylinder structure and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the rubber sheet body in the utility model.

[0016] Figure 3 It is a structural schematic diagram of the rubber sheet body in the utility model from another perspective. DETAILED DESCRIPTION

[0017] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

[0018] The invention aims to solve the problem of the unsmooth separation of the upper and lower cylinders of the hydraulic press in the prior art, and solve the problem that the negative pressure in the separation process of the upper and lower cylinders causes pulling on the cylinder rubber, resulting in a short service life of the cylinder rubber.

[0019] Therefore, the inventor disclosed the following hydraulic cylinder structure for a hydraulic press, which mainly transforms the mating surface of the rubber assembled on the pressing surface of the cylinder body so that the rubber can ensure the pressing of the sole while achieving rapid pressure relief between the upper and lower layers of the rubber, making their separation smoother.

[0020] like Figures 1 to 3 As shown, a hydraulic cylinder structure of a double-station hydraulic press that is easy to release pressure includes an upper cylinder 41 and a lower cylinder 42. The upper cylinder 41 and the lower cylinder 42 are respectively connected to an oil pressure regulating device. The bottom surface of the upper cylinder 41 is provided with an upper rubber unit, and the top surface of the lower cylinder 42 is provided with a lower rubber unit. The upper rubber unit and the lower rubber unit are pressed together, and the matching surface of the upper rubber unit is provided with a convex structure, and the matching surface of the lower rubber unit is provided with a concave structure. The upper rubber unit and the lower rubber unit perform comprehensive and flexible pressing on the sole under the action of oil pressure. The convex structure and the concave structure are designed so that a gap is left between the pressing and fitting surfaces of the upper rubber unit and the lower rubber unit to avoid the formation of negative pressure between the two, and to avoid pulling the upper rubber unit and the lower rubber unit when the upper cylinder 41 and the lower cylinder 42 are separated, so that the separation action of the upper cylinder 41 and the lower cylinder 42 is smoother. In addition, a gap is left between the pressing surfaces of the upper film unit and the lower film unit, so that the air pressure resistance encountered when the oil pressure is increased during pressing is less, the pressurization cycle is shorter, and the pressing effect is better, which has the advantages of improving equipment processing quality and saving energy.

[0021] The core of the technical solution is the rubber sheet 4 with a concave-convex pattern structure, which is a pressing rubber sheet suitable for the hydraulic press with a pressing cylinder structure driven up and down. The pressing rubber sheet is the main working part of the hydraulic press, which directly presses the sole material. The performance of the pressing rubber sheet is of great significance to the pressing quality and operation of the whole machine.

[0022] The upper rubber unit and the lower rubber unit respectively include a rubber sheet 4 which is universal to each other. The rubber sheet 4 is arranged in a concave disk shape. The upper surface of the rubber sheet 4 is arranged in a concave surface and forms a lower cylinder pressing surface 401. The lower cylinder pressing surface 401 is provided with a concave structure. The lower surface of the rubber sheet 4 is arranged in a convex surface and forms an upper cylinder pressing surface 402. The lower surface of the upper cylinder pressing surface 402 is provided with a convex structure. The rubber sheet 4, as a consumable material, has a fixed safety life. The rubber sheet 4 provided in this embodiment is universal to each other from top to bottom, which can improve the ease of assembly of the hydraulic press. There is no need to specify a specific type of rubber sheet 4 for the upper cylinder 41 or the lower cylinder 42. It is more convenient for the hydraulic press to replace and maintain the rubber sheet 4, further improving the ease of use of the equipment.

[0023] The edge of the rubber sheet 4 is formed with a connecting edge 403, which is arranged in a circular ring shape, and the upper surface of the connecting edge 403 is formed with a first sealing ring 4031 and a second sealing ring 4032, which are spaced apart in the radial direction and form a sealing groove; the lower surface of the connecting edge 403 is formed with a third sealing ring 4022, and the third sealing ring 4022 is aligned with the projection of the sealing groove. When the upper cylinder body 41 and the lower cylinder body 42 are pressed together, the third sealing ring 4022 is just embedded in the sealing groove.

[0024] The upper surface of the rubber sheet body 4 is provided with a concave pattern structure, which includes a plurality of strip grooves 4011 extending radially, and each strip groove 4011 is spaced apart along the circumferential direction. A circular groove 4012 is also provided at the center of the upper surface of the rubber sheet body 4. The circular groove 4012 at the center is provided mainly to reduce the relatively concentrated pressing action on the sole material under the hydraulic pressure when the sole is placed thereon. The width of the circular groove 4012 is 5 cm; the depth of the circular groove 4012 is 0.1 mm-0.5 mm. The cross section of the strip groove 4011 is semicircular, and the depth of the strip groove 4011 is 1 mm.

[0025] The bottom surface of the rubber sheet 4 is provided with a convex structure, which includes a plurality of strip-shaped convex ribs 4021 extending radially, and each strip-shaped convex rib 4021 is spaced apart along the circumferential direction; the cross section of the strip-shaped convex rib 4021 is semicircular, and the convex height of the strip-shaped convex rib 4021 is 1.5 mm.

[0026] The two rubber sheets 4 assembled on the upper cylinder body 41 and the lower cylinder body 42 have their strip-shaped convex ribs 4021 and the strip-shaped grooves 4011 staggered in vertical arrangement to increase the pressure relief gap between the two.

[0027] In this embodiment, the upper cylinder 41 is fixed to the top of the hydraulic press; the lower cylinder 42 is movably matched up and down by a lower cylinder lifting cylinder 43 to achieve a press fit between the upper cylinder 41 and the lower cylinder 42. Specifically, the four corners of the bottom of the lower cylinder 42 are respectively provided with a lower cylinder guide rod 421; the interior of the hydraulic press is provided with a lower cylinder guide seat 46 for slidingly mounting the lower cylinder 42, the lower cylinder guide seat 46 is provided with guide holes running through the upper and lower parts, and the lower cylinder guide rod 421 is movably plugged into the corresponding guide holes; a pressure-maintaining locking structure for maintaining pressure is also provided below the lower cylinder 42, and the pressure-maintaining locking structure includes a pressure-maintaining locking cylinder 44 and a pressure-maintaining locking connecting block, and the pressure-maintaining locking connecting block is fork-shaped The end of the pressure-maintaining locking connection block is connected to the output shaft of the locking cylinder 44; the lower cylinder guide seat 46 is provided with a locking guide hole that is transversely penetrated, and a locking plate 45 is slidably installed between the two locking guide holes on the same side. The front and rear sides of the locking plate 45 are respectively provided with an unlocking avoidance hole that penetrates up and down, and the unlocking avoidance hole is matched with the corresponding lower cylinder guide rod 421 to avoid, and the two locking plates 45 are respectively connected to the pressure-maintaining locking connection block and cooperate with each other in the horizontal movement in the front and rear directions. When unlocking, the unlocking avoidance hole slides to the right below the lower cylinder guide rod 421 and makes avoidance cooperation; when locking, the unlocking avoidance hole slides to the staggered position of the lower cylinder guide rod 421, and the plate body of the locking plate 45 and the bottom end of the lower cylinder guide rod 421 are matched to achieve locking. The above is the driving structure of the hydraulic cylinder structure in this embodiment to explain the working principle of the upper and lower cylinders of the hydraulic press.

[0028] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A hydraulic cylinder structure of a double-station hydraulic press with easy pressure relief, comprising an upper cylinder (41) and a lower cylinder (42), wherein the upper cylinder (41) and the lower cylinder (42) are respectively connected to an oil pressure regulating device, an upper rubber unit is provided on the bottom surface of the upper cylinder (41), and a lower rubber unit is provided on the top surface of the lower cylinder (42), wherein the upper rubber unit and the lower rubber unit are pressed together, and characterized in that: The mating surfaces of the upper film unit and / or the lower film unit are provided with a concave-convex structure. When the upper film unit and the lower film unit are pressed together, a gap structure for pressure relief is formed between the mating surfaces of the upper film unit and the lower film unit.

2. The hydraulic cylinder structure of a double-station hydraulic press with easy pressure relief according to claim 1 is characterized in that: The lower surface of the upper film unit is provided with a convex structure, the convex structure comprising a plurality of strip-shaped convex ribs (4021) extending in the radial direction, and the strip-shaped convex ribs (4021) are respectively spaced apart and distributed in the circumferential direction; The upper surface of the lower film unit is provided with a concave structure, the concave structure comprising a plurality of strip-shaped grooves (4011) extending in the radial direction, and the strip-shaped grooves (4011) are respectively spaced apart and distributed in the circumferential direction; Each strip-shaped convex rib (4021) and each strip-shaped groove (4011) are arranged to be staggered up and down.

3. The hydraulic cylinder structure of a double-station hydraulic press with easy pressure relief according to claim 2 is characterized in that: A circular groove (4012) is also provided at the center of the upper surface of the lower film unit.

4. The double-station hydraulic press hydraulic cylinder structure with easy pressure relief according to claim 3 is characterized in that: The depth of the circular groove (4012) is 0.1mm-0.5mm.

5. The hydraulic cylinder structure of a double-station hydraulic press with easy pressure relief according to claim 4 is characterized in that: The cross section of the strip-shaped groove (4011) is semicircular, and the depth of the strip-shaped groove (4011) is 0.5 mm-2 mm.

6. The hydraulic cylinder structure of a double-station hydraulic press with easy pressure relief according to claim 5 is characterized in that: The cross section of the strip-shaped convex rib (4021) is arranged in a semicircular shape, and the protrusion height of the strip-shaped convex rib (4021) is 0.5 mm-2 mm.

7. The hydraulic cylinder structure of a double-station hydraulic press with easy pressure relief according to claim 1 is characterized in that: The upper rubber unit and the lower rubber unit respectively comprise a mutually common rubber sheet body (4), the rubber sheet body (4) being arranged in a concave disc shape, the upper surface of the rubber sheet body (4) being arranged in a concave surface and forming a lower cylinder body pressing surface (401), the lower cylinder body pressing surface (401) being provided with a concave pattern structure; the lower surface of the rubber sheet body (4) being arranged in a convex surface and forming an upper cylinder body pressing surface (402), the lower surface of the upper cylinder body pressing surface (402) being provided with a convex pattern structure.

8. The hydraulic cylinder structure of a double-station hydraulic press with easy pressure relief according to claim 7 is characterized in that: The edge of the rubber sheet (4) is formed with a connecting edge (403), the connecting edge (403) is arranged in a circular ring shape, the upper surface of the connecting edge (403) is formed with a first sealing ring (4031) and a second sealing ring (4032), the first sealing ring (4031) and the second sealing ring (4032) are spaced apart in the radial direction and form a sealing groove; the lower surface of the connecting edge (403) is formed with a third sealing ring (4022), the third sealing ring (4022) is aligned with the projection of the sealing groove.

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