Die-casting oil cylinder structure convenient to combine and connect
Patent Information
- Application Number
- CN202522138832.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-10
AI Technical Summary
[0003]对于压铸油缸的连接安装，传统压铸油缸多采用短头螺栓对各部件进行限位安装，由于油缸缸壳两侧的密封需要，完成油缸组合安装需使用多个螺栓，拆装操作十分不便，为此，提出一种便于组合连接的压铸油缸结构
1、本油缸采用长轴栓柱贯穿限位式的安装结构，将安装底座作为下限位支撑结构，利用紧固栓柱的穿插定位分别将上密封端座和下密封端座安装在防护缸壳的上下端侧，各部件依靠紧固栓柱进行组合定位安装，安装定位方便且仅通过四组紧固栓柱即可完成油缸部件的整体安装限位，可有效提高缸体的拆装操作便利性。
Smart Images
Figure CN224800598U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die-casting cylinder technology, specifically a die-casting cylinder structure that is easy to assemble and connect. Background Technology
[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating or oscillating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines. Die-casting cylinders are a type of hydraulic cylinder, primarily used for driving the work of die-casting machines. As a crucial power actuator in die-casting machines, the performance and ease of installation of the die-casting cylinder directly affect the working efficiency and stability of the machine during operation.
[0003] For the connection and installation of die-cast hydraulic cylinders, traditional die-cast hydraulic cylinders mostly use short-head bolts to limit the installation of each component. Due to the sealing requirements on both sides of the cylinder shell, multiple bolts are required to complete the assembly of the hydraulic cylinder, making disassembly and assembly very inconvenient. Therefore, a die-cast hydraulic cylinder structure that is easy to assemble and connect is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a die-cast hydraulic cylinder structure that is easy to assemble and connect, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a die-cast cylinder structure that is easy to assemble and connect, including a piston cylinder rod, a protective cylinder shell, an upper sealing end seat, a lower sealing end seat, a mounting base, and a fastening bolt. The lower end of the fastening bolt is fastened to the mounting base. The piston cylinder rod is movably installed on the inner side of the protective cylinder shell. The upper sealing end seat and the lower sealing end seat are respectively installed on the upper and lower ends of the protective cylinder shell by the positioning support of the fastening bolt. The protective cylinder shell is fitted with a heat dissipation cover, and the upper sealing end seat is provided with a stroke limit bolt for limiting the piston rod stroke in the middle.
[0006] Preferably, the mounting base is provided with mounting screw holes at all four corners of its side, and the mounting base is fixedly installed to the support part of the equipment by bolts.
[0007] Preferably, multiple fastening bolts are provided, and the bottom end of each fastening bolt is provided with a threaded end. The threaded end is threadedly installed into the threaded hole on the upper part of the mounting base. A limiting ring seat is provided on the upper part of the threaded end. After installation, the limiting ring seat is fitted and supported by the circular groove on the upper part of the mounting base.
[0008] Preferably, the piston portion in the middle of the piston rod is slidably fitted into the inner cavity of the protective cylinder shell, and the upper sealing end seat and the lower sealing end seat are respectively fitted and sealed on the upper and lower port sides of the protective cylinder shell, and the lower end of the piston rod is movably inserted into the through hole in the middle of the lower sealing end seat.
[0009] Preferably, both the upper and lower sealing end seats are provided with oil passage ports on their edges, and both the upper and lower sealing end seats are provided with positioning holes at their corners. After installation, the end shaft of the middle part of the fastening bolt is fitted into the positioning hole. The upper end of the fastening bolt is threaded with a fastening nut. After installation, the lower part of the fastening nut abuts and presses against the end seat of the upper sealing end seat.
[0010] Preferably, an adjusting screw hole is provided through the middle of the upper sealing end seat, the travel limit bolt is threadedly installed inside the adjusting screw hole, and the lower end of the travel limit bolt protrudes through the base of the upper sealing end seat.
[0011] Preferably, the heat dissipation cover is cylindrical, and the heat dissipation cover is fitted onto the outside of the protective cylinder shell. The corners of the heat dissipation cover are provided with mounting and positioning holes. After installation, the end shaft of the middle part of the fastening bolt is fitted and inserted into the mounting and positioning hole.
[0012] Preferably, the upper part of the heat dissipation cover is provided with heat dissipation grooves, which are evenly distributed in a circular shape on the outer periphery of the heat dissipation cover.
[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects: 1. This hydraulic cylinder adopts a long-shaft bolt through-limit installation structure, with the mounting base serving as the lower limit support structure. The upper and lower sealing end seats are installed on the upper and lower ends of the protective cylinder shell by using the through-positioning of the fastening bolts. Each component is assembled and positioned by relying on the fastening bolts. The installation and positioning are convenient, and the overall installation and limit of the hydraulic cylinder components can be completed by only four sets of fastening bolts, which can effectively improve the convenience of cylinder body disassembly and assembly.
[0014] 2. A stroke limit pin is provided in the middle of the upper sealing end seat. By adjusting the contact position of the stroke limit pin, the upper stop stroke of the piston cylinder rod can be flexibly adjusted, so that the device can be adapted to the drive and installation requirements of different stroke dies.
[0015] 3. A heat dissipation cover is installed on the outside of the protective cylinder shell through nesting. The heat dissipation of the cylinder can be effectively improved by the heat dissipation cover with a multi-groove heat dissipation structure, which is conducive to improving the working stability of the cylinder. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall installation upper three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the lower side of the overall installation of this utility model; Figure 3 This is a schematic diagram of the overall working structure of this utility model; Figure 4 This is a schematic diagram of the overall central cross-sectional structure of this utility model; Figure 5 This is a three-dimensional structural diagram of the heat dissipation cover of this utility model.
[0018] Explanation of reference numerals in the attached drawings: 1. Piston rod; 2. Protective cylinder shell; 3. Upper sealing end seat; 4. Lower sealing end seat; 5. Mounting base; 6. Fastening bolt; 7. Heat dissipation cover; 8. Stroke limit bolt; 9. Oil passage port; 10. Heat dissipation groove. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0021] Example Please see Figure 1-5 This utility model provides a technical solution: a die-cast hydraulic cylinder structure that is easy to assemble and connect, including a piston cylinder rod 1, a protective cylinder shell 2, an upper sealing end seat 3, a lower sealing end seat 4, a mounting base 5, and a fastening bolt 6. The mounting base 5 serves as a mounting support component for the hydraulic cylinder, as shown in the attached figure. Figure 2 As shown, in order to facilitate the installation with the equipment support, mounting screw holes are provided at the four corners of the mounting base 5. The mounting base 5 is fixedly installed to the support part of the equipment by bolts.
[0022] The lower end of the fastening bolt 6 is securely installed to the mounting base 5, as detailed in the attached document. Figure 3 As shown, the fastening bolts 6 are long-axis shaped, and four fastening bolts 6 are provided. The bottom end of the fastening bolt 6 is provided with a threaded end, which is threaded into the threaded hole on the upper part of the mounting base 5. A limit ring seat is provided on the upper part of the threaded end. After installation, the limit ring seat is fitted and supported by the circular groove on the upper part of the mounting base 5. The piston part in the middle of the piston rod 1 is slidably fitted into the inner cavity of the protective cylinder shell 2, serving as the sliding drive part of the hydraulic cylinder. The upper sealing end seat 3 and the lower sealing end seat 4 are positioned and supported by the fastening bolts 6 and are respectively installed on the upper and lower ends of the protective cylinder shell 2. Specifically, the upper sealing end seat 3 and the lower sealing end seat 4 are fitted and sealed on the upper and lower port ends of the protective cylinder shell 2, respectively. The lower end of the piston rod 1 is movably inserted into the through hole in the middle of the lower sealing end seat 4. The corners of the upper sealing end seat 3 and the lower sealing end seat 4 are all visible. The cylinder housing 2 is equipped with positioning holes. After installation, the end shaft of the fastening bolt 6 is fitted into the positioning holes. The installation structure adopts a long-shaft bolt through-limiting type, with the mounting base 5 as the lower limit support structure. The upper sealing end seat 3 and the lower sealing end seat 4 are installed on the upper and lower ends of the protective cylinder housing 2 by using the through-positioning of the fastening bolt 6. Each component is assembled and positioned by the fastening bolt 6. The installation and positioning are convenient, and the overall installation and limit of the cylinder components can be completed by only four sets of fastening bolts 6, which can effectively improve the convenience of cylinder body disassembly and assembly. In order to achieve fastening and limiting, a fastening nut is threaded on the upper end of the fastening bolt 6. After installation, the lower part of the fastening nut abuts and presses against the end seat of the upper sealing end seat 3. In order to achieve oil circuit connection, oil circuit ports 9 are provided on the edges of both the upper sealing end seat 3 and the lower sealing end seat 4.
[0023] To improve the heat dissipation effect of the hydraulic cylinder, a heat dissipation cover 7 is installed on the outside of the protective cylinder shell 2, as shown in the attached figure. Figure 5 As shown, the heat dissipation cover 7 is a cylindrical aluminum cover that fits snugly onto the outside of the protective cylinder shell 2. The corners of the heat dissipation cover 7 are provided with mounting and positioning holes. After installation, the end shaft of the fastening bolt 6 is fitted into the mounting and positioning holes for insertion. In order to increase the heat dissipation area on the outside of the heat dissipation cover 7, a heat dissipation groove 10 is provided on the upper part of the heat dissipation cover 7. The heat dissipation groove 10 is evenly distributed in a circular shape on the outer periphery of the heat dissipation cover 7, which can effectively increase the heat dissipation contact area between the heat dissipation cover 7 and the air. Through the heat dissipation conduction of the heat dissipation cover 7 with a multi-groove heat dissipation structure, the heat dissipation efficiency of the oil cylinder can be effectively improved, which is conducive to improving the working stability of the oil cylinder.
[0024] The upper sealing end seat 3 is provided with a stroke limit pin 8 for limiting the stroke of the piston cylinder rod 1 in the middle, as shown in the attached figure. Figure 4 As shown, in order to facilitate the connection and installation of the stroke limit pin 8, an adjustment screw hole is provided through the middle of the upper sealing end seat 3. The stroke limit pin 8 is threadedly installed inside the adjustment screw hole. The lower end of the stroke limit pin 8 protrudes through the base of the upper sealing end seat 3. By adjusting the contact position of the stroke limit pin 8, the upper stop stroke of the piston cylinder rod 1 can be flexibly adjusted, so that the device can be adapted to the drive and installation requirements of different stroke dies.
[0025] Working principle or structural principle: During installation, first, tighten the lower ends of the four sets of fastening bolts 6 and install them on the upper part of the mounting base 5 by screwing. Then, use the support and positioning of the fastening bolts 6 to assemble the lower sealing end seat 4 and the protective cylinder shell 2 on the upper part of the mounting base 5. Then, position and fit the heat dissipation cover 7 on the outside of the protective cylinder shell 2. After completion, install the sealing ring gasket and add lubricating oil inside the protective cylinder shell 2. Then, install the piston cylinder rod 1 into the inside of the protective cylinder shell 2. Finally, align and install the upper sealing end seat 3 on the upper part of the protective cylinder shell 2 and lock it with nuts to complete the locking and limiting of the upper sealing end seat 3. Then, fix the mounting base 5 to the support part of the equipment by bolt limiting and connect the oil pipe to complete the combination installation operation of the oil cylinder. During operation, the piston rod 1 of the die-casting cylinder is connected and installed to the upper mold base of the die. First, the stroke of the cylinder is adjusted by turning the stroke limit pin 8 according to the working stroke of the punch. During processing, the piston rod 1 is driven to move up and down by the high-pressure oil entering from the oil circuit port 9 to realize the working drive of the mold base. After moving up, when the upper end of the piston rod 1 contacts the bottom end of the stroke limit pin 8, the upward stroke of the piston rod 1 is limited by the contact limit. At the same time, the heat generated by the high-pressure oil during operation is efficiently conducted to the outside through the heat dissipation cover 7, which accelerates the heat dissipation of the cylinder body.
[0026] In summary, this hydraulic cylinder adopts a long-shaft bolt-through limiting installation structure, with the mounting base 5 serving as the lower limiting support structure. The upper sealing end seat 3 and lower sealing end seat 4 are respectively installed on the upper and lower ends of the protective cylinder shell 2 using the insertion and positioning of the fastening bolts 6. Each component is assembled and positioned using the fastening bolts 6, making installation and positioning convenient. The overall installation and limiting of the hydraulic cylinder components can be completed using only four sets of fastening bolts 6, effectively improving the ease of disassembly and assembly of the cylinder body. A stroke limiting bolt 8 is provided in the middle of the upper sealing end seat 3. By adjusting the contact position of the stroke limiting bolt 8, the upper stop stroke of the piston rod 1 can be flexibly adjusted, making the device suitable for the drive installation requirements of different stroke dies. A heat dissipation cover 7 is nested and installed on the outside of the protective cylinder shell 2. Through the heat dissipation conduction of the heat dissipation cover 7 with its multi-groove heat dissipation structure, the heat dissipation efficiency of the hydraulic cylinder can be effectively improved, which is beneficial to improving the working stability of the hydraulic cylinder.
[0027] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.
Claims
1. A die-cast hydraulic cylinder structure that is easy to assemble and connect, comprising a piston rod (1), a protective cylinder shell (2), an upper sealing end seat (3), a lower sealing end seat (4), a mounting base (5), and a fastening bolt (6), characterized in that, The lower end of the fastening bolt (6) is fastened to the mounting base (5), the piston rod (1) is movably installed on the inner side of the protective cylinder shell (2), and the upper sealing end seat (3) and the lower sealing end seat (4) are respectively installed on the upper and lower ends of the protective cylinder shell (2) by the positioning support of the fastening bolt (6). The protective cylinder shell (2) is fitted with a heat dissipation cover (7), and the upper sealing end seat (3) is provided with a stroke limit bolt (8) for limiting the stroke of the piston rod (1).
2. The die-cast hydraulic cylinder structure according to claim 1, characterized in that, The mounting base (5) is provided with mounting screw holes at all four corners of its side. The mounting base (5) is fixedly installed to the support part of the equipment by bolts.
3. The die-cast hydraulic cylinder structure according to claim 2, characterized in that, Multiple fastening bolts (6) are provided. The bottom end of each fastening bolt (6) is provided with a threaded end. The threaded end is threadedly installed with the threaded hole on the upper part of the mounting base (5). A limiting ring seat is provided on the upper part of the threaded end. After installation, the limiting ring seat is fitted and supported by the circular groove on the upper part of the mounting base (5).
4. The die-cast hydraulic cylinder structure according to claim 3, characterized in that, The piston part in the middle of the piston rod (1) is slidably fitted into the inner cavity of the protective cylinder shell (2). The upper sealing end seat (3) and the lower sealing end seat (4) are respectively fitted and sealed on the upper and lower port sides of the protective cylinder shell (2). The lower end of the piston rod (1) is movably inserted into the through hole in the middle of the lower sealing end seat (4).
5. The die-cast hydraulic cylinder structure according to claim 4, characterized in that, The upper sealing end seat (3) and the lower sealing end seat (4) are both provided with oil passage ports (9) on their sides. The upper sealing end seat (3) and the lower sealing end seat (4) are both provided with positioning holes at their corners. After installation, the end shaft of the middle part of the fastening bolt (6) is fitted into the positioning hole. The upper end of the fastening bolt (6) is threaded with a fastening nut. After installation, the lower part of the fastening nut is pressed against the end seat of the upper sealing end seat (3).
6. The die-cast hydraulic cylinder structure according to claim 1, characterized in that, An adjusting screw hole is provided through the middle of the upper sealing end seat (3), and the travel limit bolt (8) is threadedly installed on the inner side of the adjusting screw hole. The lower end of the travel limit bolt (8) protrudes through the base of the upper sealing end seat (3).
7. The die-cast hydraulic cylinder structure according to claim 1, characterized in that, The heat dissipation cover (7) is cylindrical. The heat dissipation cover (7) is fitted and mounted on the outside of the protective cylinder shell (2). The corner of the heat dissipation cover (7) is provided with a mounting positioning hole. After installation, the end shaft of the middle part of the fastening bolt (6) is fitted and inserted into the mounting positioning hole.
8. The die-cast hydraulic cylinder structure according to claim 7, characterized in that, The upper part of the heat dissipation cover (7) is provided with heat dissipation grooves (10), which are evenly distributed in a circular shape on the outer periphery of the heat dissipation cover (7).