Piston rod guide tool of actuating mechanism

Abstract

The utility model relates to the technical field of guide tools, in particular to a piston rod guide tool of an actuating mechanism, which comprises a first fixing piece, a second fixing piece, a third fixing piece and a plurality of guide rods. The first through hole is used for fixing a piston rod; the second fixing piece and the first fixing piece are arranged in parallel, a piston rod is placed in the second through hole, and the second fixing piece is used for fixing an actuating mechanism body; the third fixing piece and the second fixing piece are arranged in parallel, and an actuating mechanism body is placed in the third fixing piece; the guide rods penetrate through the second fixing part in a sliding mode, one ends of the guide rods are fixedly connected with the first fixing part, and the other ends freely extend in the axial direction of the executing mechanism; the piston rod of the linear stroke pneumatic actuating mechanism and the pneumatic actuating mechanism body are fixed through the first fixing piece and the second fixing piece respectively, the motion trail of the piston rod is guided and positioned through the guide rod, and therefore the piston rod does not deviate in the linear reciprocating motion process.

Description

Technical Field

[0001] The utility model relates to the technical field of guiding tooling, in particular to a piston rod guiding tooling for an actuator. Background Art

[0002] A linear pneumatic actuator is a simple and reliable automation device. It mainly uses air pressure as the power source to convert air kinetic energy into mechanical energy, enabling the piston in the linear pneumatic actuator body to move linearly back and forth, driving the body to perform linear reciprocating motion, swinging or rotating motion, etc. In the production site, in addition to cooperating with valves to achieve automatic opening and closing of valves, it is also often used for workpiece positioning, clamping, pushing and pulling, etc. When using a linear pneumatic actuator to push and pull a workpiece, it is necessary to fix the linear pneumatic actuator body. The extension and retraction of the piston rod in the linear pneumatic actuator drive the workpiece to move. If the stroke of the piston rod is long or the load is large, the following two phenomena often occur: 1. The piston rod is prone to shaking when driving the load, which will cause the piston seal to be damaged due to force, and over time, it will cause air leakage in the linear pneumatic actuator body and make it unable to operate; 2. When the piston rod shakes, the piston rod deviates relative to the linear pneumatic actuator body, directly resulting in the situation where the piston rod cannot operate. Content of the Utility Model

[0003] The purpose of the utility model is to provide a piston rod guiding tooling for an actuator to solve the problems raised in the above background art.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A piston rod guiding tooling for an actuator includes:

[0006] A first fixing member, on which a first through hole is formed through, and the first through hole is used to fix the piston rod;

[0007] A second fixing member, arranged in parallel with the first fixing member, located below the first fixing member, on which a second through hole is formed through, the piston rod is placed in the second through hole, and the second fixing member is used to fix the actuator body;

[0008] A third fixing member, arranged in parallel with the second fixing member, located below the second fixing member, on which a placement hole is formed through, and the actuator body is placed in the placement hole;

[0009] A plurality of guiding rods, slidably arranged through the second fixing member, one end of the guiding rod is fixedly connected to the first fixing member, and the other end extends freely along the axis of the actuator;

[0010] Among them, the third fixing member is mainly composed of a left part of the third fixing member and a right part of the third fixing member. A dovetail head is provided on the left part of the third fixing member, and a dovetail groove is formed on the right part of the third fixing member. The dovetail head is placed in the dovetail groove.

[0011] Optionally, there are at least two guiding rods, which are arranged circumferentially along the second through hole, and the length of the guiding rods is adapted to the stroke distance of the piston rod.

[0012] Optionally, the shapes of the first fixing member, the second fixing member and the third fixing member are plate-shaped, block-shaped or disc-shaped.

[0013] Optionally, the shape and size of the placement hole are adapted to the shape and size of the actuator body.

[0014] Optionally, a guiding cylinder is provided on the third fixing member. One end of the guiding cylinder is fixed on the second fixing member, and the other end extends freely along the axis direction of the actuator body until it completely penetrates the third fixing member.

[0015] Optionally, the guiding cylinder is made of stainless steel.

[0016] Optionally, the guiding rod is slidably placed in the guiding cylinder.

[0017] Optionally, a wear-resistant PTFE positioning ring is further provided on the inner circumferential surface of the guiding cylinder.

[0018] Optionally, a layer of high-hardness wear-resistant coating is covered on the guiding rod.

[0019] Optionally, the actuator is a linear pneumatic actuator or a linear hydraulic actuator.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] In the present utility model, the piston rod of the linear pneumatic actuator and the actuator body are respectively fixed by the first fixing member, the second fixing member and the third fixing member. The movement track of the piston rod is guided and positioned by the guiding rod, so that the piston rod does not deviate during the linear reciprocating movement. With the mutual cooperation of the guiding rod, the first fixing member, the second fixing member and the third fixing member, the piston rod will not shake due to the too long stroke or too large load of the piston rod during the linear reciprocating movement, and it will not cause the piston seal ring located inside the actuator body to be damaged due to force. At the same time, it also avoids the situation that the piston rod deviates relative to the actuator body during the linear reciprocating movement, and solves the technical problems existing in the prior art. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 It is a schematic diagram of the structure of an embodiment of the present application;

[0025] Figure 3 It is a schematic cross-sectional view of the guide cylinder of the present application;

[0026] Figure 4 It is a schematic diagram of the structure of the third fixing member in another embodiment of the present application.

[0027] Reference numerals:

[0028] 1. First fixing member; 11. First through hole; 12. First threaded hole;

[0029] 2. Second fixing member; 21. Second through hole; 22. Second threaded hole;

[0030] 3. Guide rod;

[0031] 4. Third fixing member; 41. Placement hole; 42. Left part of the third fixing member; 421. Dovetail head; 43. Right part of the third fixing member; 431. Dovetail groove; 44. Guide hole;

[0032] 5. Guide cylinder; 51. Wear-resistant PTFE positioning ring;

[0033] 6. Linear pneumatic actuator; 61. Piston rod; 62. Pneumatic actuator body. Detailed implementation manners

[0034] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the present utility model are habitually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0038] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0039] In this embodiment, the actuator includes an actuator body and a piston rod. One end of the actuator body is provided with the piston rod, and the piston rod makes a linear reciprocating motion under the drive of the actuator body.

[0040] As Figure 1 shown, the embodiment of the present utility model provides a piston rod guiding tooling for an actuator, including: a first fixing member 1, a second fixing member 2, a third fixing member 4, a guiding rod 3, etc.

[0041] Among them, a first through hole 11 and a plurality of first threaded holes 12 are formed through the first fixing member 1. The piston rod of the actuator is fixedly placed in the first through hole 11. The first fixing member 1 is mainly used to fix the piston rod of the actuator, and is detachably and fixedly connected to the piston rod. The first fixing member 1 moves up and down with the piston rod; the second fixing member 2 is arranged in parallel with the first fixing member 1. A second through hole 21 and a plurality of second threaded holes 22 are formed through the second fixing member 2. The piston rod is placed in the second through hole 21. One end of the second fixing member 2 is detachably connected to the front end of the actuator body by threads, that is, the end of the actuator body adjacent to the piston rod; the third fixing member 4 is arranged on one side of the second fixing member 2, that is, in a position parallel to the second fixing member 2. An installation hole 41 is formed through the third fixing member 4. The actuator body is placed in the installation hole 41. The shape and size of the installation hole 41 are adapted to the shape and size of the actuator body; at least two guide rods 3 start from the lower end of the first fixing member 1, pass through the second fixing member 2 and extend to the third fixing member 4. One end of the guide rod 3 is fixedly connected to the first fixing member 1 by threads, and the other end passes through the third fixing member 4 and freely extends along the axis of the actuator. The length of the guide rod 3 is greater than or equal to the stroke distance of the piston rod. The guide rod 3 mainly plays a role in guiding and positioning the piston rod, so that the piston rod does not deviate during the linear reciprocating motion.

[0042] Specifically, the shapes of the first fixing member 1, the second fixing member 2 and the third fixing member 4 may be the same. For example, they may all be plate-shaped, block-shaped or disc-shaped, or they may be different, as long as the first fixing member 1, the second fixing member 2 and the third fixing member 4 can respectively fix the piston rod and the actuator body. In Figure 2 the illustrated embodiment, the first fixing member 1, the second fixing member 2 and the third fixing member 4 are all plate-shaped.

[0043] More specifically, the actuator may be a linear pneumatic actuator or a linear hydraulic actuator. In Figure 2In the illustrated embodiment, the linear pneumatic actuator includes a pneumatic actuator body 62 and a piston rod 61. One end of the pneumatic actuator body 62 is provided with the piston rod 61. The piston rod 61 passes through the second fixing member 2 and is fixedly connected to the first fixing member 1 in a penetrating manner. The piston rod 61 makes a linear reciprocating motion under the drive of the pneumatic actuator body 62. The front end of the pneumatic actuator body 62 is fixed to the second fixing member 2 by bolts. The pneumatic actuator body 62 is placed in the placement hole 41. When the piston rod 61 makes a linear reciprocating motion along the axis of the linear pneumatic actuator 6, the piston rod 61 drives the guide rod 3 and the first fixing member 1 to make a linear reciprocating motion synchronously with the piston rod 61. Under the mutual cooperation of the guide rod 3, the first fixing member 1, the second fixing member 2, and the third fixing member 4, the piston rod 61 will not shake due to the too long stroke or too large load of the piston rod 61 during the linear reciprocating motion, and will not cause the piston seal ring (not shown in the figure) inside the pneumatic actuator body 62 to be damaged due to force. At the same time, it also avoids the situation that the piston rod 61 deviates relative to the pneumatic actuator body 62 during the linear reciprocating motion.

[0044] Further, in order to improve the stability of the guide rod 3 during the linear reciprocating motion and thus improve the stability of the piston rod 61, a plurality of guide holes 44 are penetrated and opened around the placement hole 41, that is, on the third fixing member 4. A guide cylinder 5 is arranged in the guide holes 44. As Figure 2 shown, one end of the guide cylinder 5 is fixed to the second fixing member 2 by a nut, and the other end extends freely along the axis direction of the actuator body until it completely penetrates the third fixing member 4. The guide rod 3 is slidably placed in the guide cylinder 5. The guide cylinder 5 is made of stainless steel.

[0045] Further, as Figure 3 shown, in order to make there be no shaking gap when the guide rod 3 makes a reciprocating motion in the guide cylinder 5, wear-resistant PTFE positioning rings 51 are also arranged on the inner circumferential surfaces at both ends of the guide cylinder 5. The inner diameter of the wear-resistant PTFE positioning rings 51 is slightly larger than the outer diameter of the guide rod 3. The guide rod 3 is placed in the wear-resistant PTFE positioning rings 51, and the stability of the guide rod 3 is improved through the wear-resistant PTFE positioning rings 51.

[0046] Further, in order to extend the service life of the guide rod 3, a layer of high-hardness wear-resistant coating (not shown in the figure) is covered on it.

[0047] Further, in another embodiment, in order to facilitate the installation or disassembly of the third fixing member 4. As Figure 4As shown, the third fixing member 4 is split into two parts along its center line, namely the left part 42 of the third fixing member and the right part 43 of the third fixing member. A dovetail head 421 is oppositely arranged at one end of the left part 42 of the third fixing member adjacent to the right part 43 of the third fixing member, and a dovetail groove 431 is oppositely formed at one end of the right part 43 of the third fixing member corresponding to the dovetail head 421; inserting the dovetail head 421 into the dovetail groove 431 can realize the installation of the third fixing member 4, and sliding the dovetail head 421 along the dovetail groove 431 to separate the dovetail head 421 from the dovetail groove 431 can realize the disassembly of the third fixing member 4.

[0048] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A piston rod guiding tooling for an actuator, characterized in that, Including: A first fixing member, through which a first through hole is formed for fixing a piston rod; a second fixing member, arranged in parallel with the first fixing member and located below the first fixing member, through which a second through hole is formed, and the piston rod is placed in the second through hole, and the second fixing member is used for fixing the body of the actuator; a third fixing member, arranged in parallel with the second fixing member and located below the second fixing member, through which a placement hole is formed, and the body of the actuator is placed in the placement hole; a plurality of guide rods, slidably arranged through the second fixing member, one end of the guide rod is fixedly connected to the first fixing member, and the other end extends freely along the axis of the actuator; wherein, the third fixing member is mainly composed of a left part of the third fixing member and a right part of the third fixing member, a dovetail head is arranged on the left part of the third fixing member, and a dovetail groove is formed on the right part of the third fixing member, and the dovetail head is placed in the dovetail groove.

2. The piston rod guiding tooling of the actuator according to claim 1, characterized in that, There are at least two guide rods, arranged circumferentially along the second through hole, and the length of the guide rod is adapted to the stroke distance of the piston rod.

3. The piston rod guiding tooling of the actuator according to claim 1, characterized in that The shapes of the first fixing member, the second fixing member and the third fixing member are plate-shaped, block-shaped or disc-shaped.

4. The piston rod guiding tooling of the actuator according to claim 1, characterized in that The shape and size of the placement hole are adapted to the shape and size of the body of the actuator.

5. The piston rod guiding tooling of the actuator according to claim 1, characterized in that, A guide cylinder is arranged on the third fixing member, one end of the guide cylinder is fixed on the second fixing member, and the other end extends freely along the axis direction of the body of the actuator until it completely penetrates the third fixing member.

6. The piston rod guiding tooling of the actuator according to claim 5, characterized in that, The guide cylinder is made of stainless steel.

7. The piston rod guiding tooling of the actuator according to claim 5, characterized in that, The guide rod is slidably placed in the guide cylinder.

8. The piston rod guiding tooling of the actuator according to claim 5, characterized in that, A wear-resistant PTFE positioning ring is further arranged on the inner circumferential surface of the guide cylinder.

9. The piston rod guiding tooling of the actuator according to claim 1, characterized in that A layer of high-hardness wear-resistant coating is covered on the guide rod.

10. The piston rod guiding tooling of the actuator according to claim 1, characterized in that, The actuator is a linear pneumatic actuator or a linear hydraulic actuator.

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