High-speed reciprocating telescopic cylinder

Abstract

The invention relates to a high-speed reciprocating telescopic cylinder, and belongs to the technical field of automatic control. Comprising a piston stroke cylinder, a piston rod cylinder, a piston rod, a damping assembly and a module connector. The piston rod cylinder bodies are arranged on the two sides of the piston stroke cylinder body respectively and provided with stroke holes penetrating through the piston stroke cylinder body and the piston rod cylinder bodies. The piston rod is provided with an integrated piston structure which is located in the middle of the piston rod. The damping assembly is mounted on the piston rod cylinder body; the module connectors are installed at the two ends of the piston rod and used for expanding and connecting external modules. The structural strength and the service life of the cylinder and the piston rod are improved by changing the cylinder structure and the distribution of the piston on the piston rod, so that the cylinder is more suitable for high-speed movement.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic control, and in particular relates to a high-speed reciprocating telescopic cylinder. Background Art

[0002] High-speed reciprocating telescopic cylinder is a kind of cylinder that uses gas as drive and electrical components as control method to further complete the required actions and is widely used in the field of automatic control technology.

[0003] The existing conventional cylinder consists of a cylinder barrel, an end cover, a piston, a piston rod and a seal. The cylinder barrel is the main working area, and the piston and piston rod reciprocate in the cylinder barrel. The inner surface roughness of the cylinder barrel is required to be relatively high. The end cover is provided with a vent buffer mechanism, a sealing ring and a dust ring to prevent foreign matter from entering the cylinder. The end cover is provided with a guide ring to improve the guide accuracy. The piston and piston rod are riveted together, and the piston rod and piston are the main force-bearing parts, and the gas of the left and right cavities is prevented from being mixed with each other. The connection of the rotary reciprocating motion accessories is sealed with a seal. The flowing medium enters the cylinder for pressurization. After the air pressure reaches the working standard, the control of the cylinder is completed through the solenoid valve. The solenoid valve starts to work, and the pressure of the left cavity is reduced by connecting the external exhaust gas through the solenoid valve, and the pressure of the right cavity is increased by the solenoid valve to push the piston rod. The opening and closing of the solenoid valve controls the movement frequency of the cylinder, and the electromagnetic pulse is sent to the solenoid valve.

[0004] The patent with announcement number: CN107730258B discloses a high-speed cylinder, including: an air chamber and a guide cylinder assembled into a cylinder body, the air inlet end of the guide cylinder is inserted into the air chamber from the side of the air chamber and forms a sealed fixed structure with the air chamber, the sealed fixed structure is the same as the first air inlet pipe and the second air inlet pipe, directly conveying gas to the guide cylinder and the air chamber respectively, a one-way valve and an air inlet valve are installed on the first air inlet pipe, the one-way valve is located between the outer wall of the air chamber and the air inlet valve, and the air inlet valve is installed on the second air inlet pipe; a piston rod is arranged in the guide cylinder, and a gap is formed between the piston rod and the guide cylinder; a ventilation gap is opened in the part of the guide cylinder located in the air chamber, and sealing members are respectively arranged on the inner walls of the guide cylinder at both ends of the ventilation gap so that when the piston rod is in the ventilation gap, an airtight seal is formed between the air chamber, the guide cylinder and the piston rod.

[0005] The prior art has at least the following problems during use:

[0006] The piston and piston rod are under great pressure and cannot respond quickly. The piston is usually located at the top of the piston rod. If the piston moves back and forth quickly, the piston rod will be insufficient in strength and easily deformed, and the piston will be unstable during operation. Summary of the invention

[0007] The present invention provides a high-speed reciprocating telescopic cylinder, which is used to solve the technical problems in the prior art that the piston and the piston rod are subjected to large pressure and cannot respond quickly; the piston is generally located at the top of the piston rod, and if the piston reciprocates and telescopes quickly, the piston rod is insufficient in strength and easily deformed, and the piston is unstable during operation.

[0008] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0009] A high-speed reciprocating telescopic cylinder comprises: a piston stroke cylinder body, a piston rod cylinder body, a piston rod, a shock absorbing assembly, and a module joint. The piston rod cylinder bodies are respectively arranged on both sides of the piston stroke cylinder body, and a stroke hole is opened to penetrate the piston stroke cylinder body and the piston rod cylinder body; the piston rod has an integrated piston structure, and the piston structure is located in the middle of the piston rod; the shock absorbing assembly is installed on the piston rod cylinder body; the module joints are installed at both ends of the piston rod for expanding and connecting external modules.

[0010] Furthermore, the piston rod cylinder comprises: a front piston rod cylinder and a rear piston rod cylinder. The front piston rod cylinder is mounted on one side of the piston stroke cylinder, and the shock absorbing assembly is arranged on the side of the front piston rod cylinder away from the piston stroke cylinder; the rear piston rod cylinder is mounted on the other side of the piston stroke cylinder, and the shock absorbing assembly is arranged on the side of the rear piston rod cylinder away from the piston stroke cylinder.

[0011] Furthermore, the shock absorbing assembly includes: a shock absorbing pad, a shock absorber, and a shock absorber fixing plate. The shock absorbing pad is fixedly mounted on the side of the front piston rod cylinder and the rear piston rod cylinder away from the piston stroke cylinder; the shock absorber is fixedly mounted on the shock absorbing pad; and the shock absorber fixing plate is mounted on the shock absorber.

[0012] Furthermore, it also includes: a washer, a sleeve, a piston limit block, and a solenoid valve mounting plate. The washer is arranged between the front piston rod cylinder body and the stroke hole connection of the piston stroke cylinder body; the sleeve is installed on the piston in the middle of the piston rod, and the sleeve is also respectively installed in the gap formed between the piston rod and the front piston rod cylinder body and the rear piston rod cylinder body; the piston limit blocks are respectively installed at both ends of the piston rod; the solenoid valve mounting plate is provided with a first hole and a second hole on the piston stroke cylinder body, and the solenoid valve mounting plate is provided with mounting holes corresponding to the first hole and the second hole.

[0013] Furthermore, it also includes: a sealing gasket, a sealing protection ring, and a sealing ring. The sealing gaskets are respectively arranged at the connection between the front piston rod cylinder body and the rear piston rod cylinder body and the piston stroke cylinder; the sealing protection ring is installed on the front piston rod cylinder body; and the sealing ring is installed between the solenoid valve mounting plate and the piston stroke cylinder body.

[0014] Furthermore, it also includes: a rear cover and a cover shell. The rear cover is arranged on the rear piston rod cylinder body; the cover shell is detachably arranged outside the piston stroke cylinder body, the rear piston rod cylinder body and the front piston rod cylinder body.

[0015] Furthermore, the shaft sleeve and the washer are both made of engineering plastics.

[0016] The present invention provides a high-speed reciprocating telescopic cylinder, which has the following beneficial effects:

[0017] By setting up a split cylinder body, specifically, by setting up a piston stroke cylinder body and a piston rod cylinder body separately, the internal structure of the cylinder is changed, thereby changing the air pressure distribution in the cylinder and improving the overall structural strength of the telescopic cylinder; by integrating the piston in the middle of the piston rod, the stability and reliability during the movement are improved, the structural strength of the piston rod is improved, and the service life of the piston rod is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a high-speed reciprocating telescopic cylinder provided in an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a high-speed reciprocating telescopic cylinder provided in an embodiment of the present invention;

[0021] Figure 3 An exploded view of a high-speed reciprocating telescopic cylinder provided in an embodiment of the present invention.

[0022] In the figure: 10-piston stroke cylinder; 301-piston rod; 50-module joint; 201-front piston rod cylinder; 202-rear piston rod cylinder; 401-shock-absorbing pad; 402-shock absorber; 403-shock absorber fixing plate; 101-washer; 102-sleeve; 302-piston limit block; 103-solenoid valve mounting plate; 104-sealing gasket; 105-sealing protection ring; 106-sealing ring; 107-rear cover. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] Example:

[0028] based on Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a high-speed reciprocating telescopic cylinder, including: a piston stroke cylinder body 10, a piston rod 301 cylinder body, a piston rod 301, a shock absorbing assembly, and a module joint 50. The piston rod 301 cylinder body is respectively arranged on both sides of the piston stroke cylinder body 10, and a stroke hole is opened to penetrate the piston stroke cylinder body 10 and the piston rod 301 cylinder body; the piston rod 301 has an integrated piston structure, and the piston structure is located in the middle of the piston rod 301; the shock absorbing assembly is installed on the piston rod 301 cylinder body; the module joint 50 is installed at both ends of the piston rod 301, and is used to expand and connect external modules.

[0029] In this embodiment, if Figure 1 , Figure 2 and Figure 3As shown, piston rod 301 cylinder bodies are respectively arranged on both sides of piston stroke cylinder body 10. Gas enters the cylinder body through piston stroke cylinder body 10, and the piston rod 301 cylinder body is pressurized by the flowing medium, so as to change the air pressure strength in the cylinder by changing the cylinder structure, thereby improving the overall structural strength of the equipment, and dispersing the distribution of air pressure during high-speed movement, thereby improving the service life; by changing the position of piston rod 301 and piston, the top of the piston is moved to the middle section of piston rod 301, the force structure is changed, piston rod 301 is strengthened, and coaxiality is controlled; modular joint 50 is used to expand the scope of use and function expansion of piston rod 301. Cylinder body and piston rod 301 are made of aluminum alloy, and the surface is protected by black coating. Enhance the oxidation resistance and corrosion resistance of parts, thereby increasing the service life.

[0030] Further, in some implementations of this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the piston rod 301 cylinder body includes: a front piston rod cylinder body 201 and a rear piston rod cylinder body 202. The front piston rod cylinder body 201 is installed on one side of the piston stroke cylinder body 10, and the shock absorbing assembly is arranged on the side of the front piston rod cylinder body 201 away from the piston stroke cylinder body 10; the rear piston rod cylinder body 202 is installed on the other side of the piston stroke cylinder body 10, and the shock absorbing assembly is arranged on the side of the rear piston rod cylinder body 202 away from the piston stroke cylinder body 10.

[0031] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the piston rod 301 cylinder body is specifically subdivided into a specific front piston rod cylinder body 201 and a rear piston rod cylinder body 202, which is mainly used to facilitate subsequent differentiated installation and solidification of the functional structure, thereby further improving the stability of the equipment.

[0032] Further, in some implementations of this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the shock absorbing assembly includes: a shock absorbing pad 401, a shock absorber 402, and a shock absorber fixing plate 403. The shock absorbing pad 401 is fixedly mounted on the side of the front piston rod cylinder 201 and the rear piston rod cylinder 202 away from the piston stroke cylinder 10; the shock absorber 402 is fixedly mounted on the shock absorbing pad 401; and the shock absorber fixing plate 403 is mounted on the shock absorber 402.

[0033] In this embodiment, if Figure 1 , Figure 2 and Figure 3As shown, the shock absorber 402 is specifically a rubber elastic shock absorber 402 or a hydraulic shock absorber 402, which optimizes the spring shock absorber 402, improves the shock absorption performance of the equipment, reduces the attenuation of the shock absorption performance caused by the failure of the spring, and reduces the space occupied by the spring shock absorber. As for the rubber shock absorber 402, it is small in size and easy to install. Moreover, for the use environment of the high-speed cylinder, the rubber shock absorber 402 has a more stable vibration absorption effect for high frequencies, and there is no need to worry about the interference of the potential energy of the elastic element and the high-speed expansion and contraction, thereby improving the overall stability of the device.

[0034] Further, in some implementations of this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, it also includes: a gasket 101, a sleeve 102, a piston limit block 302, and a solenoid valve mounting plate 103. The gasket 101 is arranged between the front piston rod cylinder body 201 and the stroke hole connection of the piston stroke cylinder body 10; the sleeve 102 is installed on the piston in the middle of the piston rod 301, and the sleeve 102 is also respectively assembled in the gap formed between the piston rod 301 and the front piston rod cylinder body 201 and the rear piston rod cylinder body 202; the piston limit block 302 is respectively assembled at both ends of the piston rod 301; the solenoid valve mounting plate 103 is provided with a first hole and a second hole on the piston stroke cylinder body 10, and the solenoid valve mounting plate 103 is provided with mounting holes corresponding to the first hole and the second hole.

[0035] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the piston limit block 302 is installed on the piston rod 301 on one side of the rear piston rod cylinder body 202, and is used to limit the travel range of the piston rod 301; the first hole and the second hole are both used to connect the air compressor to pressurize the front piston rod cylinder body 201 of the cylinder body and the rear piston rod cylinder body 202 of the piston travel cylinder body 10. After the air pressure reaches the working standard, the control of the cylinder is completed through the solenoid valve. Assuming that the initial state of the cylinder is the retracted state, the solenoid valve starts to work and the pressure of the external exhaust gas connected by the solenoid valve is reduced. The air pressure is increased by the solenoid valve to push the piston rod 301 to extend, and the extension is limited by the piston limit block 302. The opening and closing of the solenoid valve controls the extension and contraction of the cylinder, and the movement frequency is controlled by sending electromagnetic pulses to the solenoid valve.

[0036] Further, in some implementations of this embodiment, Figure 1 , Figure 2 and Figure 3As shown, it also includes: a sealing gasket 104, a sealing protection ring 105, and a sealing ring 106. The sealing gasket 104 is respectively arranged at the connection between the front piston rod cylinder body 201 and the rear piston rod cylinder body 202 and the piston stroke cylinder; the sealing protection ring 105 is installed on the front piston rod cylinder body 201; and the sealing ring 106 is installed between the solenoid valve mounting plate 103 and the piston stroke cylinder body 10.

[0037] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, a flat gasket is also provided and installed between the sealing ring 106 and the piston stroke cylinder body 10 to further improve the fit between the sealing ring 106 and the piston stroke cylinder body 10 and improve the sealing performance. The sealing gasket 104 is an engineering plastic gasket, and the sealing protection ring 105 and the sealing ring 106 are made of rubber.

[0038] Further, in some implementations of this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, it also includes: a rear cover 107 and a cover shell. The rear cover 107 is arranged on the rear piston rod cylinder body 202; the cover shell is detachably arranged outside the piston stroke cylinder body 10, the rear piston rod cylinder body 202 and the front piston rod cylinder body 201.

[0039] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown,

[0040] Further, in some implementations of this embodiment, Figure 1 , Figure 2 and Figure 3 As mentioned above, the shaft sleeve 102 and the washer 101 are both made of engineering plastics.

[0041] In summary, when using a high-speed reciprocating telescopic cylinder, the cylinder structure is changed to divide the cylinder body into a piston stroke cylinder body 10 and a piston rod 301 cylinder body, and the air pressure strength in the cylinder is changed by changing the cylinder structure; the position of the piston rod 301 and the piston is changed to move the top of the piston to the middle section of the piston rod 301, change the force structure, strengthen the piston rod 301, and control the coaxiality; add an engineering plastic sleeve 102 to increase the running stability and guide performance; by changing the piston stroke cylinder body 10 and the piston rod 301 cylinder body to aluminum alloy and adding protective coating, the sleeve 102 is optimized to engineering plastic, the oxidation resistance and corrosion resistance of the parts are enhanced, thereby increasing the service life, and the cylinder sealing, stability and shock absorption can be increased; by setting the shock absorber 402, the shock absorption performance attenuation caused by the failure of the conventional shock absorption spring is reduced, and the space occupied by the spring shock absorption is reduced.

[0042] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A high-speed reciprocating telescopic cylinder, characterized in that: include: Piston stroke cylinder (10); The piston rod (301) cylinder body is respectively arranged on both sides of the piston stroke cylinder body (10), and is provided with a stroke hole penetrating the piston stroke cylinder body (10) and the piston rod (301) cylinder body; The piston rod (301) has an integrated piston structure, wherein the piston structure is located in the middle of the piston rod (301); A shock absorbing assembly, mounted on the cylinder body of the piston rod (301); Module connectors (50) are installed at both ends of the piston rod (301) and are used to expand and connect external modules.

2. A high-speed reciprocating telescopic cylinder according to claim 1, characterized in that: The piston rod (301) cylinder comprises: A front piston rod cylinder (201) is mounted on one side of the piston stroke cylinder (10), and the shock absorbing assembly is arranged on a side of the front piston rod cylinder (201) away from the piston stroke cylinder (10); The rear piston rod cylinder body (202) is mounted on the other side of the piston stroke cylinder body (10), and the shock absorbing assembly is arranged on a side of the rear piston rod cylinder body (202) away from the piston stroke cylinder body (10).

3. A high-speed reciprocating telescopic cylinder according to claim 2, characterized in that: The shock absorbing assembly comprises: A shock-absorbing pad (401) fixedly mounted on a side of the front piston rod cylinder (201) and the rear piston rod cylinder (202) away from the piston stroke cylinder (10); A shock absorber (402) fixedly mounted on the shock absorbing pad (401); The shock absorber fixing plate (403) is mounted on the shock absorber (402).

4. A high-speed reciprocating telescopic cylinder according to claim 3, characterized in that: Also includes: A washer (101) is arranged between the connection between the front piston rod cylinder (201) and the stroke hole of the piston stroke cylinder (10); A shaft sleeve (102) is mounted on the piston in the middle of the piston rod (301), and the shaft sleeve (102) is also respectively mounted in the gap formed between the piston rod (301) and the front piston rod cylinder body (201) and the rear piston rod cylinder body (202); Piston limiting blocks (302) are respectively assembled at both ends of the piston rod (301); A solenoid valve mounting plate (103), wherein the piston stroke cylinder body (10) is provided with a first hole and a second hole, and the solenoid valve mounting plate (103) is provided with mounting holes corresponding to the first hole and the second hole.

5. A high-speed reciprocating telescopic cylinder according to claim 4, characterized in that: Also includes: Sealing gaskets (104) are respectively arranged at the connection between the front piston rod cylinder body (201) and the rear piston rod cylinder body (202) and the piston stroke cylinder; A sealing protection ring (105) mounted on the front piston rod cylinder body (201); A sealing ring (106) is installed between the solenoid valve mounting plate (103) and the piston stroke cylinder body (10).

6. A high-speed reciprocating telescopic cylinder according to claim 5, characterized in that: Also includes: A rear cover (107) is disposed on the rear piston rod cylinder body (202); A cover shell, wherein the detachable cover is arranged outside the piston stroke cylinder body (10), the rear piston rod cylinder body (202) and the front piston rod cylinder body (201).

7. A high-speed reciprocating telescopic cylinder according to claim 6, characterized in that: The shaft sleeve (102) and the washer (101) are both made of engineering plastics.

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