Pneumatic straight stroke executing mechanism

Abstract

The utility model provides a pneumatic straight stroke actuating mechanism, which relates to the technical field of actuating mechanisms and comprises a compressed air pump and a front mounting seat, an air outlet pipe orifice is arranged at the front end of the compressed air pump, the front end of the air outlet pipe orifice is connected to the middle of the rear part of a main air passage, and three groups of air outlet cylinders are arranged in the middle of the front side surface of the main air passage. The front ends of the three sets of air outlet cylinders are all led into a front mounting base, a rear fixing plate is fixed to the front end of the front mounting base, a telescopic cavity is formed in the front end of the rear fixing plate, a straight moving shaft rod is movably arranged in the telescopic cavity in a telescopic mode, a front fixing plate is arranged at the front end of the telescopic cavity, and an air inlet pipe opening is formed in the rear portion of the upper end face of a compressed air pump. The left side face and the right side face of the air inlet pipe opening are connected with a left connecting pipe and a right connecting pipe correspondingly. According to the pneumatic pushing device, multiple input ports are adopted for conveying gas for pushing execution, and gas feedback pipelines on the two sides are arranged for collecting, compressing and recycling, so that the pneumatic pushing device is energy-saving, environment-friendly, more efficient, more convenient, economical and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to a pneumatic linear actuator. Background Art

[0002] A pneumatic actuator refers to a structure that converts the kinetic energy of gas into mechanical energy and performs external operations. The most common pneumatic actuator is the cylinder, which is widely used in contemporary industrial equipment and is the cornerstone for ensuring the normal operation of the equipment.

[0003] In the specification of a linear pneumatic actuator in the prior art (Announcement No. CN220134343U), it is mentioned that "a plurality of countersunk holes are provided on the symmetrical side surfaces of the cylinder body, and a movable limit end head is movably installed inside each countersunk hole, a mounting groove is provided on one end face of the movable limit end head, and a permanent magnet steel is installed on the internal buckle of the mounting groove, an electromagnetic limiter is threadedly connected at the port of the countersunk hole, and the electromagnetic limiter includes a shell, and an iron core is fixed at the internal center axis position of the shell by a buckle, and a coil is wound around the outside of the iron core." However, the pneumatic actuator in the prior art adopts one-way transmission for pneumatic push execution, and the gas cannot be reversely transported back for reuse, which is not economical, energy-saving or environmentally friendly. Utility Model Content

[0004] In order to overcome the defects of the existing technology, a pneumatic linear actuator is now provided to solve the problem that the pneumatic actuator in the existing technology adopts one-way transmission for pneumatic propulsion and the gas cannot be reversely transported back for reuse, which is not economical, energy-saving and environmentally friendly.

[0005] To achieve the above-mentioned purpose, a pneumatic linear actuator is provided, including a compressed air pump and a front mounting seat, wherein an air outlet is provided at the front end of the compressed air pump, and the front end of the air outlet is connected to the middle of the rear part of the main air duct, three groups of air outlets are provided in the middle of the front side of the main air duct, and the front ends of these three groups of air outlets all lead to the front mounting seat, a rear fixing plate is fixed to the front end of the front mounting seat, and a telescopic cavity is provided at the front end of the rear fixing plate, a straight-moving shaft rod is telescopically movable in the telescopic cavity, and a front fixing plate is provided at the front end of the telescopic cavity.

[0006] Furthermore, an air inlet is provided at the rear of the upper end surface of the compressed air pump, and the left and right sides of the air inlet are respectively connected to a left connecting pipe and a right connecting pipe, and a first electromagnetic control valve is installed on the air outlet, the left connecting pipe and the right connecting pipe.

[0007] Furthermore, the left and right sides of the upper end surface of the main air duct are respectively connected to the left air outlet and the right air outlet, and the front ends of the left and right air outlets are both provided with air outlet cylinders, the air outlet cylinders are covered with sealing sleeves, and the air outlet cylinders on the left and right sides are respectively extended into the left and right parts of the front mounting seat.

[0008] Furthermore, three groups of center inlets are provided on the middle side of the rear side of the front mounting seat, side inlets are provided on both the left and right sides of the front mounting seat, and a mesh panel is provided on the front inner portion of the front mounting seat.

[0009] Furthermore, a piston plate is provided in the telescopic chamber for moving back and forth, and the rear end of the straight-moving shaft is fixed to the center of the piston plate, and a sleeve plate is fixed to the front of the straight-moving shaft, and the sleeve plate is sleeved outside the guide rod provided on the front side of the front fixed plate, and a front fixed block is provided at the front end of the straight-moving shaft.

[0010] Furthermore, the left and right parts of the front fixing plate are respectively provided with a left connecting cavity and a right connecting cavity, and the front end of the left connecting tube is connected to the left port of the left connecting cavity, and the front end of the right connecting tube is connected to the right port of the right connecting cavity.

[0011] The beneficial effects of the present invention are:

[0012] 1. The setting of the air inlet pipe on the compressed air pump of the utility model facilitates the inhalation of air. The air is compressed and stored in the compressed air pump, and can be transported to the main air duct through the air outlet pipe, and then transported to the front mounting seat through the main air duct, the left air outlet, the right air outlet and the air outlet cylinder, which can push the straight shaft rod to extend straight forward, and the original gas in the telescopic cavity will be transported back to the compressed air pump through the left connecting pipe and the right connecting pipe, thereby achieving gas recycling. It is not only economical and environmentally friendly, but also energy-saving and trouble-free.

[0013] 2. The sleeve at the front of the straight-moving shaft of the utility model is placed outside the guide rods on both sides, which serves the purpose of straight orientation and helps the actuator to achieve the effect of linear forward and backward movement, which is more accurate and practical.

[0014] 3. The left connecting cavity and the right connecting cavity opened on the left and right parts of the front fixed plate of the utility model respectively form a two-way air return pipeline structure with the left connecting pipe and the right connecting pipe. Not only is the air return faster, but it is also more uniform and balanced, which helps to ensure that the pneumatic linear stroke execution is safer and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0016] Figure 2 A schematic cross-sectional view of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the front mounting seat according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the expanded structure of the telescopic cavity according to an embodiment of the present utility model.

[0019] In the figure: 1. Compressed air pump; 10. Air inlet pipe; 11. Air outlet pipe; 12. Left connecting pipe; 13. Right connecting pipe; 14. Main air duct; 15. Air outlet cylinder; 16. Left air outlet; 17. Right air outlet; 18. First solenoid control valve; 19. Sealing sleeve; 2. Front mounting seat; 20. Middle inlet; 21. Side inlet; 22. Mesh panel; 23. Rear fixing plate; 24. Piston plate; 25. Telescopic chamber; 26. Straight shaft; 260. Front fixing block; 261. Sleeve plate; 27. Front fixing plate; 270. Guide rod; 28. Left connecting chamber; 29. Right connecting chamber. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the present invention. The described embodiments are part of the embodiments of the present disclosure, not all of them. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0021] The specific implementation of the present utility model will be described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a front view schematic diagram of an embodiment of the utility model, Figure 2 A cross-sectional diagram of an embodiment of the present invention is shown in FIG. Figure 3 Schematic diagram of the internal structure of the front mounting seat of the embodiment of the utility model and Figure 4 This is a schematic diagram of the expanded structure of the telescopic cavity according to an embodiment of the present utility model.

[0023] Reference Figures 1 to 4 As shown, the present invention provides a pneumatic linear actuator, comprising a compressed air pump 1 and a front mounting base 2. The front end of the compressed air pump 1 is provided with an air outlet port 11, and the front end of the air outlet port 11 is connected to the rear middle of the main air duct 14. Three sets of air outlets 15 are provided in the middle of the front side of the main air duct 14, and the front ends of these three sets of air outlets 15 all lead into the front mounting base 2. A rear fixing plate 23 is fixed to the front end of the front mounting base 2, and a telescopic cavity 25 is provided at the front end of the rear fixing plate 23. A straight-moving shaft rod 26 is telescopically movable in the telescopic cavity 25, and a front fixing plate 27 is provided at the front end of the telescopic cavity 25.

[0024] In this embodiment, an air inlet port 10 is provided at the rear portion of the upper end surface of the compressed air pump 1, and the left and right side surfaces of the air inlet port 10 are respectively connected to a left connecting pipe 12 and a right connecting pipe 13, and a first electromagnetic control valve 18 is installed on the air outlet port 11, the left connecting pipe 12 and the right connecting pipe 13; the left and right sides of the upper end surface of the main air duct 14 are respectively connected to a left air outlet duct 16 and a right air outlet duct 17, and an air outlet cylinder 15 is provided at the front end of the left air outlet duct 16 and the right air outlet duct 17, and the air outlet cylinder 15 is covered with a sealing sleeve 19, and the air outlet cylinders 15 on the left and right sides respectively extend into the left and right parts of the front mounting seat 2.

[0025] As a preferred embodiment, the setting of the air inlet pipe 10 on the compressed air pump 1 of the utility model facilitates the inhalation of air. The air is compressed and stored in the compressed air pump 1, and can be transported to the main air duct 14 through the air outlet pipe 11, and then transported to the front mounting seat 2 through the main air duct 14, the left air outlet 16, the right air outlet 17 and the air outlet cylinder 15, which can push the straight shaft 26 to extend straight forward, and the original gas in the telescopic chamber 25 will be transported back to the compressed air pump 1 through the left connecting pipe 12 and the right connecting pipe 13, thereby achieving gas recycling, which is not only economical and environmentally friendly, but also energy-saving and trouble-free.

[0026] In this embodiment, three groups of central inlets 20 are provided on the middle side of the rear side surface of the front mounting seat 2, and side inlets 21 are provided on both the left and right side surfaces of the front mounting seat 2, and a mesh panel 22 is provided at the front inner portion of the front mounting seat 2; a piston plate 24 is provided in the telescopic cavity 25 to move back and forth, and the rear end of the straight-moving shaft rod 26 is fixed to the center of the piston plate 24, and a sleeve plate 261 is fixed to the front portion of the straight-moving shaft rod 26, and the sleeve plate 261 is sleeved on the outside of the guide rod 270 provided on the front side surface of the front fixing plate 27, and a front fixing block 260 is provided at the front end of the straight-moving shaft rod 26.

[0027] As a preferred embodiment, the sleeve 261 at the front of the straight shaft 26 of the present invention is placed outside the guide rods 270 on both sides, which serves the purpose of straight orientation and helps the actuator to achieve the effect of linear forward and backward movement, which is more accurate and practical.

[0028] In this embodiment, the left and right parts of the front fixing plate 27 are respectively provided with a left connecting cavity 28 and a right connecting cavity 29, and the front end of the left connecting tube 12 is connected to the left port of the left connecting cavity 28, and the front end of the right connecting tube 13 is connected to the right port of the right connecting cavity 29.

[0029] As a preferred embodiment, the left connecting cavity 28 and the right connecting cavity 29 opened on the left and right parts of the front fixed plate 27 of the utility model respectively form a two-way air return pipeline structure with the left connecting pipe 12 and the right connecting pipe 13. Not only is the air return faster, but it is also more uniform and balanced, which helps to ensure that the pneumatic linear stroke execution is safer and more stable.

[0030] The utility model can effectively solve the problem in the prior art that the pneumatic actuator adopts one-way transmission for pneumatic propulsion, the gas cannot be transported back for reuse, and is not economical, energy-saving and environmentally friendly. The pneumatic propulsion of the utility model adopts multiple input ports to transport gas for propulsion execution, and sets double-sided gas return pipelines for collection, compression and reuse, which is not only energy-saving and environmentally friendly, but also more efficient, convenient, economical and practical.

[0031] The above embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the scope of protection of the present invention.

Claims

1. A pneumatic linear actuator, characterized by: The invention comprises a compressed air pump (1) and a front mounting seat (2), wherein the front end of the compressed air pump (1) is provided with an air outlet (11), and the front end of the air outlet (11) is connected to the middle of the rear part of the main air duct (14), three groups of air outlets (15) are provided in the middle of the front side of the main air duct (14), and the front ends of the three groups of air outlets (15) are all connected to the front mounting seat (2), the front end of the front mounting seat (2) is fixed with a rear fixing plate (23), and the front end of the rear fixing plate (23) is provided with a telescopic cavity (25), a straight shaft (26) is telescopically movable in the telescopic cavity (25), and the front end of the telescopic cavity (25) is provided with a front fixing plate (27).

2. A pneumatic linear actuator according to claim 1, characterized in that: An air inlet (10) is provided at the rear portion of the upper end surface of the compressed air pump (1), and the left and right side surfaces of the air inlet (10) are respectively connected to a left connecting pipe (12) and a right connecting pipe (13), and a first electromagnetic control valve (18) is installed on the air outlet (11), the left connecting pipe (12) and the right connecting pipe (13).

3. A pneumatic linear actuator according to claim 1, characterized in that: The left and right sides of the upper end surface of the main air duct (14) are connected to a left air outlet duct (16) and a right air outlet duct (17), respectively. The front ends of the left air outlet duct (16) and the right air outlet duct (17) are both provided with an air outlet cylinder (15). The air outlet cylinder (15) is covered with a sealing sleeve (19), and the air outlet cylinders (15) on the left and right sides extend into the left and right parts of the front mounting seat (2), respectively.

4. A pneumatic linear actuator according to claim 1, characterized in that: Three groups of middle inlets (20) are provided on the middle side of the rear side of the front mounting seat (2), and side inlets (21) are provided on both the left and right sides of the front mounting seat (2), and a mesh panel (22) is provided on the inner front of the front mounting seat (2).

5. The pneumatic linear actuator according to claim 1, characterized in that: A piston plate (24) is provided in the telescopic chamber (25) to move forward and backward, and a rear end of a straight-moving shaft (26) is fixed to the center of the piston plate (24), and a sleeve plate (261) is fixed to the front of the straight-moving shaft (26), the sleeve plate (261) being sleeved outside a guide rod (270) provided on the front side of the front fixing plate (27), and a front fixing block (260) is provided at the front end of the straight-moving shaft (26).

6. The pneumatic linear actuator according to claim 1, characterized in that: The left and right parts of the front fixing plate (27) are respectively provided with a left connecting cavity (28) and a right connecting cavity (29), and the front end of the left connecting pipe (12) is connected to the left port of the left connecting cavity (28), and the front end of the right connecting pipe (13) is connected to the right port of the right connecting cavity (29).

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