CN202851517U - Single-rod double-cylinder coaxial cylinder structure - Google Patents

Abstract

The utility model discloses a can apply to pneumatic cylinder, the coaxial jar structure of pressing of single pole double cylinder formula of pneumatic cylinder, it is interior to press the jar body, outer double-cylinder coaxial type design, but establish one in the external pressure jar and be the interior pressure jar of axial displacement of piston rod shape, but establish an axial displacement's piston rod in interior pressure jar, establish through-connection hole and external control valve through external pressure bottom of the cylinder end, and interior pressure bottom of the cylinder end establish with external pressure bottom of the cylinder end through-connection hole that the through-connection hole communicates, and the external pressure jar other end, the through-connection hole and the external control valve that the interior pressure jar other end set up respectively, constitute the coaxial sectional type pressurized jar structure of pressing of single pole double cylinder. The utility model discloses coaxial jar structure of pressing of single pole twin cylinder formula has produced the use efficiency of pressurization output effectively, and then promotes the industrial utilization nature and the economic benefits nature of pressing the jar.

Description

Single-rod double-cylinder coaxial cylinder structure

technical field

The utility model relates to a single-rod double-cylinder coaxial pressure cylinder structure applicable to gas pressure cylinders and liquid pressure cylinders.

Background technique

It is generally used in the equipment for compacting objects. It is designed and used with gas cylinders and hydraulic cylinders. The effect of squeezing the accumulated objects is achieved through the forward extrusion of the piston rods of the cylinders. However, in such known equipment In the design, the design of the pressure cylinder takes the forward positioning point of the piston rod of the pressure cylinder as the set compaction target, and the reservation of this target is limited by the forward positioning point of the piston rod of the expected pressure cylinder, and the piston rod of the expected pressure cylinder advances The positioning point involves the design limitation of the overall machine tool space and structural conditions, and therefore under the predetermined input condition of the forward extrusion power source, the compaction effect of the object to be extruded is limited by the forward positioning point of the piston rod of the cylinder, so Under the different shrinkable properties of different extruded items, the ideal goal of tight compaction cannot really be achieved. Therefore, under the condition of the same predetermined input forward extrusion power source, the forward extrusion force output by its action is not fully utilized.

Utility model content

The technical problem to be solved by the utility model is: to design a kind of under the condition of the same predetermined input forward extrusion power source, which can further improve the propulsion pressure and effect of the pressing cylinder to extrude the object, and can make the pressing cylinder action output. The single-rod double-cylinder coaxial pressure cylinder structure with fully increased forward extrusion force.

In order to solve the above-mentioned technical problems, the utility model provides a single-rod double-cylinder coaxial pressure cylinder structure, which includes an inner and outer double-cylinder coaxial outer pressure cylinder and an inner pressure cylinder. An internal pressure cylinder in the shape of a piston rod that can be displaced axially, the bottom end of the external pressure cylinder is provided with a through connection hole and an external control valve, and the other end of the external pressure cylinder is provided with a through connection hole and an external control valve; One end of the internal pressure cylinder capable of axial telescopic displacement in the pressure cylinder protrudes from the front end of the external pressure cylinder, and the bottom end of the internal pressure cylinder is an integrated piston body. The piston body at the bottom end of the internal pressure cylinder is provided with a through hole; There is a piston rod, and the other end of the internal pressure cylinder is provided with a through connection hole and an external control valve.

Furthermore, the outer diameter of the piston is larger than the outer diameter of the internal pressure cylinder.

Furthermore, the diameter of the through hole provided on the piston body at the bottom end of the internal pressure cylinder is the same as the diameter of the through connection hole at the bottom end of the external pressure cylinder.

The single-rod double-cylinder coaxial pressure cylinder structure of the utility model achieves the same input pressure value of the actuating source in terms of actual use benefits, effectively produces the use effect of the pressurized output pressure cylinder, and further improves the industrial utilization of the pressure cylinder and economic efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the single-rod double-cylinder type coaxial press cylinder structure of the present invention;

Fig. 2 is a structural schematic diagram 2 of the single-rod double-cylinder type coaxial press cylinder structure of the present invention;

Fig. 3 is a structural schematic diagram 3 of the single-rod double-cylinder coaxial pressure cylinder structure of the utility model.

In the figure, 1. External pressure cylinder, 11. Connection hole, 111. Control valve, 12. Connection hole, 121. Control valve, 2. Internal pressure cylinder, 20. Piston body, 21. Through hole, 22. Connection hole , 221. control valve, 3. piston rod.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the utility model and implement it, but the examples given are not intended to limit the utility model.

As shown in Figure 1, it is a structural schematic diagram 1 of an embodiment of a single-rod double-cylinder coaxial cylinder structure of the present invention, including an external pressure cylinder 1 and an internal pressure cylinder 2 with inner and outer double cylinder coaxial designs.

Wherein, an internal pressure cylinder 2 in the shape of a piston rod that can be displaced axially is provided in the external pressure cylinder 1. As shown in FIG. (with a three-stage control valve for entering, stopping, and exiting), a through connection hole 12 and an external control valve 121 (a three-stage control valve for entering, stopping, and exiting) are provided at the other end of the external pressure cylinder 1 .

One end of the internal pressure cylinder 2 that can be axially telescopically displaced in the external pressure cylinder 1 protrudes from the front end of the external pressure cylinder 1, and the bottom end of the internal pressure cylinder 2 is an integral piston body 20, the outer diameter of which is larger than the inner diameter of the piston body 20. The outer diameter of the pressure cylinder 2, the design of the piston body 20 and the bottom end of the inner pressure cylinder 2 as one, makes the inner pressure cylinder 2 with the piston body 20 at the bottom end in the outer pressure cylinder 1 and can move axially under force the piston rod. In addition, the piston body 20 at the bottom end of the internal pressure cylinder 2 is provided with a through hole 21, and the diameter of the through hole 21 is the same as that of the through connection hole 11 at the bottom end of the external pressure cylinder 1, and the piston body 20 at the bottom end of the internal pressure cylinder 2 The provided through hole 21 communicates with the inside of the internal pressure cylinder 2 . A piston rod 3 is arranged inside the internal pressure cylinder 2, and a through connection hole 22 and an external control valve 221 (a three-stage control valve with in, stop and out) are provided at the other end of the internal pressure cylinder 2 .

As shown in Figure 1, the piston rod 3 of the internal pressure cylinder 2 can be axially reciprocated and telescopically displaced in the internal pressure cylinder 2 to actuate a pressing force with a set pressure value forward; and the internal pressure cylinder 2 can also be The axial reciprocating telescopic displacement is in the outer pressure cylinder 1, and the force bearing area of the piston body 20 of the inner pressure cylinder 2 is larger than the force bearing area of the piston rod 3 in the inner pressure cylinder 2, so that the axial forward displacement speed of the inner pressure cylinder 2 is slightly slower However, an extrusion force greater than the axial forward displacement of the piston rod 3 is generated to achieve an output of extrusion force greater than the pressure value set forward by the piston rod 3 of the internal pressure cylinder 2 .

Its operation is shown in the figure:

As shown in Figure 1, when the external control valve 111 of the external pressure cylinder 1 through the connection hole 11 is controlled as an in-type, the pressure source is introduced into the interior of the external pressure cylinder 1, and the other end of the external pressure cylinder 1 passes through the external connection of the connection hole 12. The control valve 121 of the internal pressure cylinder 2 is operated as a stop type, and the external control valve 221 of the other end of the internal pressure cylinder 2 that passes through the connecting hole 22 is controlled as an output type, so the pressure source enters the internal pressure source from the bottom piston body 20 of the internal pressure cylinder 2 through the through hole 21. In the press cylinder 2, the displacement of the piston rod 3 is generated to push outwards and push to the location. When the external control valve 221 of the other end of the internal pressure cylinder 2 passing through the connecting hole 22 is controlled as an in-type, and when the external control valve 111 of the external pressure cylinder 1 penetrating through the connecting hole 11 is controlled as an out-type, the piston of the internal pressure cylinder 2 is generated. The rod 3 is retracted inwardly for positioning.

As shown in Figure 2, after the piston rod 3 of the internal pressure cylinder 2 is repeatedly moved forward and squeezed forward, the extruded material is gradually compacted, so when the piston rod 3 of the internal pressure cylinder 2 is displaced and stretches out to reach the position When the resistance reaches a set value, the external control valve 121 of the other end of the external pressure cylinder 1 that passes through the connection hole 12 is controlled to be an outlet type, which will prompt the piston body 20 of the internal pressure cylinder 2 to move forward in the external pressure cylinder 1, so that Whole internal pressure cylinder 2 (together with piston rod 3) pushes forward and extrudes.

Since the pressure source introduced by the external pressure cylinder 1 through the connection hole 11 enters the interior of the external pressure cylinder 1 at this time, and the force-bearing area of the pushed internal pressure cylinder 2 piston body 20 is absolutely larger than the force-bearing area of the internal pressure cylinder 2 piston rod 3, Therefore, the internal pressure cylinder 2 that is pushed forward produces an output greater than the forward push extrusion force of the previous piston rod 3, and when the externally extended positioning of the internal pressure cylinder 2 piston rod 3 reaches a set value, the internal pressure cylinder 2's additional forward push and extrusion, so that the extruded object can really achieve the compaction effect.

As shown in Figure 3, after the piston rod 3 of the internal pressure cylinder 2 and the internal pressure cylinder 2 itself are pushed forward and squeezed to the forward position, the external control valve 111 that makes the external pressure cylinder 1 penetrate the connecting hole 11 is controlled until the control is completed. When the other end of the internal pressure cylinder 2 passes through the connecting hole 22, the externally connected control valve 221 controls the stop type and the other end of the external pressure cylinder 1 passes through the connecting hole 12. The externally connected control valve 121 controls the stop type, so as to facilitate the extrusion Packaging bundles in real-world situations. Thereafter, the external control valve 111 of the external pressure cylinder 1 passing through the connecting hole 11 is controlled as an out-type, the external control valve 221 of the other end of the internal pressure cylinder 2 passing through the connecting hole 22 is controlled as an in-type, and the other end of the external pressure cylinder 1 The externally connected control valve 121 penetrating through the connection hole 12 is controlled as an inward type, so that the piston rod 3 of the internal pressure cylinder 2 and the internal pressure cylinder 2 itself quickly retreat to the retracted position at the same time, for the start of the next cycle.

Therefore, the single-rod double-cylinder coaxial pressure cylinder structure of the utility model can indeed achieve the same input power source pressure value in terms of actual use benefits, and can effectively produce the pressure output of the pressure cylinder, thereby improving the industry of the pressure cylinder. Usability and economic efficiency.

The above-mentioned embodiments are only preferred embodiments for fully illustrating the utility model, and the protection scope of the utility model is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present utility model are all within the protection scope of the present utility model. The scope of protection of the utility model shall be determined by the claims.

Claims (3)

1. A single-rod twin-cylinder type coaxial pressure cylinder structure is characterized in that it comprises an outer pressure cylinder and an inner pressure cylinder of the inner and outer double-cylinder coaxial type, and a piston rod shape can be set in the outer pressure cylinder. Axially displaced internal pressure cylinder, the bottom end of the external pressure cylinder is provided with a through connection hole and an external control valve, and the other end of the external pressure cylinder is provided with a through connection hole and an external control valve; The front end of the external pressure cylinder protrudes toward one end of the internal pressure cylinder of the telescopic displacement, and the bottom end of the internal pressure cylinder is an integrated piston body. The piston body at the bottom end of the internal pressure cylinder is provided with a through hole; The other end of the pressure cylinder is provided with a through connection hole and an external control valve. 2. The single-rod twin-cylinder coaxial cylinder structure according to claim 1, wherein the outer diameter of the piston is larger than the outer diameter of the inner cylinder. 3. The single-rod double-cylinder coaxial pressure cylinder structure according to claim 1, wherein the through-hole diameter of the piston body at the bottom end of the internal pressure cylinder is the same as the diameter of the through-connection hole at the bottom end of the external pressure cylinder .

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