Flowing type self-balancing floating bottom cylinder

Abstract

The utility model relates to the technical field of sole pressing machines, and discloses a flowing type self-balancing floating bottom cylinder which comprises an oil cylinder body of a cuboid structure, a plurality of independent oil cavities are formed in the oil cylinder body side by side in the length direction, oil cylinder openings are formed in the tops of the oil cavities, and the bottoms of adjacent oil cylinders are communicated through one or more oil guide channels. The side walls of the foremost oil cavity and the last oil cavity are each provided with an oil injection opening. A piston guide piece is installed on an oil cylinder opening, a piston rod penetrates upwards from the bottom of the piston guide piece, a fixing plate is arranged at the top end of the piston rod, the oil cylinder body is arranged to be of solid structures on the two sides of parallel oil cavities, guide rods are fixed to the bottoms of the two ends of the fixing plate respectively, the guide rods are movably inserted into guide holes formed in the solid structures, and reset springs are arranged on the guide rods in a sleeved mode. An accessory hydraulic control system and an external auxiliary software and hardware system in a traditional scheme are omitted, energy consumption and manufacturing cost are greatly reduced, the size is reduced, installation space is saved, and installation is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to bottoming press technology field especially relates to a flow type self -balancing floating bottom cylinder. BACKGROUND

[0002] The current shoe bottoming press adopts hydraulic system to drive integral or combined mold to mold shoe sole when processing and forming shoe sole. Especially when using flexible bottoming mold composed of multiple independent rubber blocks, the traditional solution is to equip each rubber block with independent oil cylinder and complex valve, pipeline and electric control software and hardware system through a centralized hydraulic control system, which leads to complex system, high cost and large floor area. For example, the shoe bottoming press floating bottom with publication number CN209121363U is driven by the hydraulic system moving vertically to the ground, which occupies a large space and is inconvenient to install. In addition, the aforementioned complex hydraulic control system is difficult to realize real-time and self-adaptive adjustment of pressure of all rubber blocks, and some rubber blocks may not effectively fit the shoe sole due to insufficient pressure, ultimately leading to uneven compression and affecting the yield of products. SUMMARY

[0003] Therefore, the utility model aims at providing a flow type self-balancing floating bottom cylinder to solve the problems mentioned in the background.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A flow type self-balancing floating bottom cylinder, comprising an oil cylinder body in the shape of a cuboid, a plurality of independent oil cavities are arranged side by side in the length direction inside the oil cylinder body, an oil cylinder port is formed in the top of each oil cavity, the bottoms of adjacent oil cylinders are communicated through one or more oil guide channels, and an oil inlet is arranged on the side wall of the frontmost and rearmost oil cavities respectively; a piston guide is arranged on each oil cylinder port, the piston guide comprises a fixed block and a cylindrical piston guide column arranged at the bottom of the fixed block, a sealing ring is arranged on the outside of the piston guide column, the sealing ring is in interference sealing cooperation with the side wall of the oil cavity, a through hole is formed in the fixed block, a piston rod passes through the through hole upward from the bottom of the piston guide, a fixing plate for fixing rubber mold is arranged at the top end of the piston rod, the oil cylinder body is arranged in a solid structure on both sides of the side-by-side oil cavities, guide rods are fixed at the bottom of both ends of the fixing plate respectively, the guide rods are movably inserted into guide holes arranged on the solid structure, and a return spring is arranged between the fixing plate and the top of the oil cylinder body.

[0006] Further, a positioning groove is arranged on the top of the fixing plate, a rubber mold is arranged on the top of the fixing plate, a positioning protrusion is arranged on the bottom of the rubber mold, and the positioning protrusion is embedded in the positioning groove.

[0007] Furthermore, the space formed by the multiple oil chambers and oil guide channels is filled with hydraulic oil.

[0008] Furthermore, each of the oil chambers has a cylindrical structure, and the piston rod includes a straight rod portion at the top and a disc-shaped piston portion at the bottom. The piston portion is located inside the oil chamber and is dynamically sealed to the inner wall of the oil chamber.

[0009] Furthermore, the straight rod portion is an optical axis with a diameter adapted to the through hole of the fixing block. When the piston rod is installed, the straight rod portion passes through the through hole of the fixing block from bottom to top, the piston portion is locked at the bottom of the piston guide column, and a gap for oil flow is reserved between the bottom surface of the piston portion and the bottom of the oil chamber.

[0010] Furthermore, the diameter of the through hole is consistent with the inner diameter of the piston guide post.

[0011] Furthermore, a flat gasket is installed between the fixing block and the cylinder body to prevent oil leakage from the top of the cylinder body. Beneficial effects

[0012] Compared with the prior art, the present invention has at least the following advantages:

[0013] This invention employs multiple independent oil chambers connected by a bottom oil guide channel to form a sealed, integrated oil chamber with a fixed and virtually incompressible oil volume. When any one or more piston rods are subjected to downward force, all other piston rods move upward to adapt to the shape of the shoe sole, applying adaptive and uniform pressure to the sole. This ensures the hydraulic linkage of all piston rods, eliminating the need for the accessory hydraulic control system and external auxiliary hardware and software systems required in traditional solutions. This significantly reduces energy consumption and manufacturing costs, while also reducing size, saving installation space, and making installation more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a top view of the structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of the AA of this utility model.

[0017] Figure 4 This is a schematic diagram of the longitudinal cross-sectional structure of CC according to this utility model.

[0018] Figure 5 This is a schematic diagram of the longitudinal cross-sectional structure of BB according to this utility model.

[0019] Figure 6 This is a schematic diagram of the piston guide of this utility model.

[0020] Figure 7 This is a schematic diagram of the piston rod of this utility model.

[0021] The diagram is labeled as follows: 1-Cylinder body; 2-Guide hole; 3-Oil chamber; 4-Oil inlet; 5-Oil guide channel; 6-Piston guide; 60-Fixing block; 61-Piston guide column; 64-Sealing groove; 62-Piston guide fixing hole; 63-Through hole; 7-Piston rod; 70-Straight rod part; 71-Piston part; 72-Piston rod fixing hole; 8-Fixing plate; 80-Mounting hole; 81-Connecting hole; 82-Positioning groove; 83-Through hole; 9-Glue mold; 90-Glue film fixing hole; 91-Positioning protrusion; 10-Return spring; 11-Guide rod; 110-Guide rod fixing hole; Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] See Figures 1-7 This embodiment provides a flow-type self-balancing floating bottom cylinder, including a cuboid cylinder body 1. The longitudinal section of the cylinder body 1 is T-shaped, and multiple independent oil chambers 3 are arranged side by side along the length of the middle part. Each oil chamber 3 is a cylindrical structure. Each oil chamber 3 has an oil cylinder port at the top. The bottoms of adjacent oil chambers are connected by one or more oil guiding channels 5. The frontmost and backmost oil chambers are respectively provided with an oil injection port 4 on their side walls.

[0026] Each of the cylinder ports is equipped with a piston guide 6, which includes a rectangular fixing block 60 and a cylindrical piston guide post 61 at its bottom. A sealing groove 64 is provided on the outer side of the piston guide post 61, and a sealing ring is embedded in the sealing groove 64. The fixing block 60 has a piston guide fixing hole 62. The piston guide post 61 is inserted into the oil chamber from the cylinder port. The sealing ring is press-fitted with the side wall of the oil chamber 3. A screw passes through the piston guide fixing hole 62 and is threaded into a threaded hole at the top of the cylinder body 1 to fix the piston guide 6 to the cylinder body 1. Preferably, a flat gasket is installed between the fixing block 60 and the cylinder body 1 for sealing to prevent oil leakage from the top of the cylinder body 1.

[0027] The fixing block 60 is provided with a through hole 63, the diameter of which is the same as the inner diameter of the piston guide post 61. The piston rod 7 passes through the through hole 63 from the bottom of the piston guide post 6 upwards. The piston rod 7 includes a straight rod part 70 at the top and a disc-shaped piston part 71 at the bottom, with the piston part 71 connected below the straight rod part 70. The piston part 71 is located inside the oil chamber 3, and a sealing ring is installed on its outer side, which dynamically seals against the inner wall of the oil chamber 3. The straight rod part 70 is a smooth shaft, and its diameter is adapted to the through hole 63 of the fixing block. When the piston rod 7 is installed, the straight rod part 70 passes through the piston guide post 61 and the through hole 63 of the fixing block from bottom to top. The sealing ring of the piston part 71 is press-fitted against the side wall of the oil chamber 3 and is locked at the bottom of the piston guide post 61, with a pre-reserved gap for oil flow between the bottom surface of the piston part 71 and the bottom of the oil chamber 3.

[0028] A fixing plate 8 for mounting a plastic mold 9 is provided at the top of the piston rod 7. The fixing plates 8, connecting multiple piston rods 7, are arranged parallel to each other along the length of the cylinder body 1. A piston rod fixing hole 72 is provided at the top of the piston rod 7, and a mounting hole 80 is provided at the top of the fixing plate 8. A screw passes through the mounting hole 80 and is threadedly connected to the piston rod fixing hole 72 to fix the fixing plate 8 to the piston rod 7. A positioning groove 82 is provided at the top of the fixing plate 8, and a plastic mold 9 is provided at the top of the fixing plate 8. A positioning protrusion 91 is provided at the bottom of the plastic mold 9, and the positioning protrusion 91 is embedded in the positioning groove 82. The plastic mold 9 has a plastic mold fixing hole 90, and a connecting hole 81 corresponding to the plastic mold fixing hole 90 is provided on the fixing plate 8. A screw passes through the plastic mold fixing hole 90 and is threadedly connected to the connecting hole 81 to fix the plastic mold 9 to the fixing plate 8.

[0029] The cylinder body 1 has a solid structure on both sides of the parallel oil chambers 3. Guide rods 11 are provided at the bottom of both ends of the fixing plate 8. Through holes 83 are provided at both ends of the fixing plate 8. A guide rod fixing hole 110 is provided at the top of the guide rod 11. Screws are threaded through the through holes 83 and into the guide rod fixing hole 110 to fix the fixing plate 8 and the guide rod 11. The guide rod 11 is movably inserted into the guide hole 2 provided on the solid structure. A return spring 10 is sleeved on the guide rod 11, located between the fixing plate 8 and the top of the cylinder body 1.

[0030] Oil is injected into the oil chamber 3 through the oil inlet 4. After the oil injection is completed, the oil inlet 4 is sealed by a plug with a sealing structure and an external thread, and the plug is threadedly connected to the oil inlet 4. The space formed by the multiple oil chambers 3 and the oil guide channel 5 is filled with hydraulic oil.

[0031] Working principle: All oil chambers 3 are connected through the bottom oil guide channel 5 to form a closed integrated oil chamber with a fixed oil volume and almost incompressible oil. When the straight rod portion 70 of any one or more piston rods 7 is subjected to downward pressure, its piston portion 71 simultaneously presses down on the oil in the corresponding oil chamber 3. The oil is transmitted to all oil chambers instantly through the bottom oil guide channel of the cylinder body 1. Since the oil volume is constant, the oil pressure will push the piston portion 71 of all other piston rods 7 to move upward. This causes the rubber molds set on the top of these piston rods to float. When the bottom surface of the shoe sole to be formed is uneven, the downwardly protruding part of the shoe sole contacts the rubber mold 9 first, squeezing this part of the rubber mold 9 downward. The remaining rubber molds 9 rise and fit the concave part of the shoe sole under the action of internal oil pressure. Depending on the unevenness of the shoe sole, the process of each rubber mold descending and rising is different, perfectly adapting to the shape of the shoe sole to apply uniform pressure to the shoe sole. Once the sole is pressed and formed, the external pressure is removed, and the elastic restoring force of the return spring 10 pushes the fixing plate 8 upward, causing all piston rods 7 to return to their initial positions, preparing for the next pressing.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flow-type self-balancing float bottom cylinder, characterized by, The oil cylinder body comprises a cuboid structure, and a plurality of independent oil chambers are arranged in parallel along the length direction inside the oil cylinder body. An oil cylinder port is formed at the top of each oil chamber. The bottoms of adjacent oil chambers are communicated through one or more oil guiding channels. An oil injection port is arranged on the side wall of the frontmost and rearmost oil chambers. A piston guide is arranged on each oil cylinder port. The piston guide comprises a fixed block and a cylindrical piston guide column arranged at the bottom of the fixed block. A sealing ring is arranged on the outer side of the piston guide column. The sealing ring is in interference sealing cooperation with the side wall of the oil chamber. The fixed block is provided with a through hole. A piston rod passes through the through hole upward from the bottom of the piston guide. A fixing plate for mounting a rubber mold is arranged at the top end of the piston rod. The oil cylinder body is provided with a solid structure on both sides of the parallel oil chambers. Guide rods are fixed at the bottom of both ends of the fixing plate. The guide rods are movably inserted into guide holes arranged on the solid structure. The guide rods are sleeved with return springs arranged between the fixing plate and the top of the oil cylinder body.

2. A floating self-balancing floatation bottom cylinder according to claim 1, characterized in that, A positioning groove is arranged at the top of the fixing plate. A rubber mold is arranged at the top of the fixing plate. A positioning protrusion is arranged at the bottom of the rubber mold. The positioning protrusion is embedded into the positioning groove.

3. A floating self-balancing floatation bottom cylinder according to claim 2, characterized in that, Hydraulic oil is injected into the space formed by the plurality of oil chambers and the oil guiding channels.

4. A floating self-leveling shoe according to claim 1, wherein Each oil chamber is a cylindrical structure. The piston rod comprises a straight rod part arranged at the upper part and a disc-shaped piston part arranged at the lower part. The piston part is arranged in the oil chamber and is in dynamic sealing cooperation with the inner wall of the oil chamber.

5. A floating self-balancing floatation bottom cylinder according to claim 4, characterized in that, The straight rod part is an optical axis. The diameter of the straight rod part is adapted to the diameter of the through hole of the fixed block. When the piston rod is mounted, the straight rod part passes through the through hole of the fixed block upward from the bottom. The piston part is clamped at the bottom of the piston guide column. The bottom surface of the piston part is in a reserved oil flow gap with the bottom of the oil chamber.

6. A floating self-balancing floatation bottom cylinder according to claim 1 or 5, characterized in that, The diameter of the through hole is consistent with the inner diameter of the piston guide column.

7. A floating self-leveling float bottom cylinder according to claim 1, characterized in that, A flat gasket is arranged between the fixed block and the oil cylinder body to prevent oil leakage at the top of the oil cylinder body.

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