Exhaust cylinder

Abstract

The utility model discloses an exhaust cylinder which comprises a cylinder body, a front cover, a rear cover, an exhaust rod and a piston and further comprises a positioning copper sleeve fixed on the rear cover, a telescopic hole matched with one end of the exhaust rod in a telescopic sliding mode is formed in the positioning copper sleeve, and at least one first limiting plane is arranged in the telescopic hole. The exhaust rod is provided with a second limiting plane attached to the first limiting plane. A positioning copper sleeve is arranged on a rear cover, a telescopic hole matched with one end of an exhaust rod is formed in the copper sleeve, at least one first limiting plane is arranged in the telescopic hole, and a second limiting plane attached to the first limiting plane is arranged on the exhaust rod. And through limiting of the first limiting plane and the second limiting plane, the exhaust rod can be effectively prevented from rotating during working, and the stability and reliability of the air cylinder are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust cylinders, in particular to an exhaust cylinder. Background Art

[0002] Exhaust cylinders are widely used in various industrial fields, particularly in processes such as injection molding and foaming. To ensure product quality, effective control of internal gas exhaust is crucial. Traditional exhaust cylinders primarily consist of a cylinder body, front cover, rear cover, exhaust rod, and piston. These components work together to ensure effective gas discharge during operation.

[0003] However, in actual application, it is found that the existing exhaust cylinder has some shortcomings. In particular, when the exhaust cylinder encounters an inclined surface or other non-flat contact surface during operation, the exhaust rod is prone to rotation due to uneven force, which not only affects the exhaust effect.

[0004] On the other hand, to prevent the exhaust rod from rotating, some cylinders incorporate a stopper between the exhaust rod and the front cover. While this approach can prevent the exhaust rod from rotating to a certain extent, it increases the sealing requirements between the cylinder rod and the front cover. This increased sealing requirement makes this area more susceptible to leakage, further reducing the cylinder's service life and increasing maintenance costs.

[0005] Based on the above problems, it is necessary to improve the existing exhaust cylinder and design a new structural form to overcome the problem of easy rotation of the exhaust rod in the existing technology and improve the reliability and stability of the exhaust cylinder. Utility Model Content

[0006] In view of the deficiencies in the background technology, the utility model provides an exhaust cylinder.

[0007] The technical solution adopted by the present utility model is: an exhaust cylinder, including a cylinder body, a front cover, a rear cover, an exhaust rod and a piston, and also including a positioning copper sleeve fixed on the rear cover, a telescopic hole is provided in the positioning copper sleeve for telescopically and slidably cooperating with one end of the exhaust rod, at least one first limiting plane is provided in the telescopic hole, and a second limiting plane is provided on the exhaust rod to fit with the above-mentioned first limiting plane.

[0008] Furthermore, there are two first limiting planes, which are arranged on both sides of the exhaust rod.

[0009] Furthermore, a fixing hole is provided at the connection between the positioning copper sleeve and the rear cover.

[0010] Furthermore, both ends of the piston have connecting steps extending outwards of both ends, and the exhaust rod is provided with an annular step groove for connecting with the above-mentioned connecting steps.

[0011] Furthermore, a first sealing groove is provided on the exhaust rod inside the piston, a sealing ring is provided in the first sealing groove, a second sealing groove and a wear-resistant groove are provided on the outer ring of the piston, and a wear-resistant ring is provided in the wear-resistant groove.

[0012] Furthermore, the exhaust rod includes a piston rod and an ejector pin connected to the top of the piston rod, the outer ring side wall of the top of the ejector pin has exhaust sections arranged at intervals, and the bottom of the exhaust section has an inwardly contracted exhaust groove.

[0013] Furthermore, the front cover is connected to a sleeve, which includes a front sleeve and a rear sleeve. The sleeve hole of the front sleeve is slidably matched with the ejector pin, and an exhaust port is provided on the outer ring of the rear sleeve.

[0014] The beneficial effects of the utility model are:

[0015] 1. Prevent the exhaust rod from rotating: The fitting design of the first limiting plane and the second limiting plane effectively limits the rotational movement of the exhaust rod in the working state, solving the problem of poor gas discharge caused by the rotation of the exhaust rod in the traditional exhaust cylinder.

[0016] 2. Improve the service life of the cylinder: Compared with the traditional method of setting a limiting structure between the exhaust rod and the front cover, this application adds a positioning copper sleeve at the rear cover, eliminating the need to add a sealing structure between the positioning copper sleeve and the exhaust cylinder, thereby reducing the production cost of the cylinder and ensuring that there is no requirement, thereby extending the service life of the cylinder.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection between the exhaust rod, rear cover, and positioning copper sleeve.

[0021] Figure 1-3In: 1. Cylinder body; 2. Front cover; 3. Rear cover; 4. Exhaust rod; 5. Piston; 6. Positioning copper sleeve; 7. Telescopic hole; 8. First limiting plane; 9. Second limiting plane; 10. Fixing hole; 11. Connecting step; 12. Annular step groove; 13. First sealing groove; 14. Second sealing groove; 15. Wear-resistant groove; 16. Wear-resistant ring; 17. Piston rod; 18. Ejector pin; 19. Exhaust section; 20. Exhaust groove; 21. Sleeve; 22. Front sleeve; 23. Rear sleeve; 24. Exhaust port. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] The utility model provides an exhaust cylinder.

[0025] In this embodiment, referring to Figure 1-3 The exhaust cylinder includes a cylinder body 1, a front cover 2, a rear cover 3, an exhaust rod 4 and a piston 5, and also includes a positioning copper sleeve 6 fixed on the rear cover. The positioning copper sleeve 6 is provided with a telescopic hole 7 that is telescopically and slidably matched with one end of the exhaust rod. The telescopic hole 7 is provided with at least one first limiting plane 8, and the exhaust rod 4 is provided with a second limiting plane 9 that is in contact with the above-mentioned first limiting plane 8.

[0026] In the above technical solution, a positioning copper sleeve is provided on the rear cover, and a telescopic hole is provided within the sleeve to mate with one end of the exhaust rod. The telescopic hole is provided with at least one first limiting surface, and the exhaust rod is provided with a second limiting surface that mates with the first limiting surface. The restraint of the first and second limiting surfaces effectively prevents the exhaust rod from rotating during operation, thereby improving the stability and reliability of the cylinder.

[0027] Specifically, there are two first limiting planes, which are arranged opposite to each other on both sides of the exhaust rod.

[0028] In this embodiment, by setting two opposite first limiting planes on both sides of the exhaust rod, the second limiting plane is adapted to the first limiting plane, and there are two opposite first limiting planes, which further enhances the ability to limit the rotation of the exhaust rod.

[0029] Specifically, a fixing hole 10 is provided at the connection between the positioning copper sleeve and the rear cover.

[0030] A fixing hole is provided at the connection between the positioning copper sleeve and the rear cover, so that the positioning copper sleeve can be firmly installed and fixed on the rear cover.

[0031] Specifically, both ends of the piston are provided with connecting steps 11 extending outwards of both ends, and the exhaust rod is provided with an annular step groove 12 for connecting with the connecting steps.

[0032] Both ends of the piston have connecting steps extending outward, and the exhaust rod is provided with an annular step groove for connecting to the connecting steps. This design facilitates the installation of the piston, while strengthening the connection stability between the piston and the exhaust rod, and improving the sealing performance of the cylinder under high-pressure working environment.

[0033] Specifically, a first sealing groove 13 is provided on the exhaust rod inside the piston, a sealing ring is provided in the first sealing groove, a second sealing groove 14 and a wear-resistant groove 15 are provided on the outer ring of the piston, and a wear-resistant ring 16 is provided in the wear-resistant groove.

[0034] A first sealing groove is provided on the exhaust rod inside the piston, and a sealing ring is installed therein. A second sealing groove and a wear-resistant groove are provided on the piston outer ring, and a wear-resistant ring is installed in the wear-resistant groove. This effectively prevents gas leakage and reduces wear between the piston and the cylinder wall during reciprocating motion, extending the service life of the cylinder.

[0035] Specifically, the exhaust rod includes a piston rod 17 and a ejector pin 18 connected to the top of the piston rod 17. The outer ring side wall of the top of the ejector pin 18 has exhaust sections 19 arranged at intervals, and the bottom of the exhaust section has an inwardly contracted exhaust groove 20.

[0036] The exhaust rod consists of a piston rod and an ejector pin attached to its top. The ejector pin's outer ring features spaced exhaust cutouts, and the bottom of the sloped surface features an inward-contracting exhaust groove. This structural design facilitates smooth exhaust and effectively disperses pressure during exhaust, minimizing impact on the cylinder structure.

[0037] Specifically, the front cover is connected to a sleeve 21 , which includes a front sleeve 22 and a rear sleeve 23 . The sleeve hole of the front sleeve is slidably matched with the ejector pin, and the outer ring of the rear sleeve is provided with an exhaust port 14 .

[0038] The sleeve connected to the front cover consists of a front sleeve and a rear sleeve. The front sleeve's bore slides over the ejector pin, while the rear sleeve's outer ring features an exhaust port. Gas passes through the exhaust ramp and is discharged smoothly through the port. The sleeve structure also provides better guidance, ensuring linear motion of the ejector pin and enhancing the cylinder's overall performance.

[0039] Technical personnel please note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. An exhaust cylinder, comprising a cylinder body, a front cover, a rear cover, an exhaust rod and a piston, characterized in that: It also includes a positioning copper sleeve fixed on the back cover, wherein the positioning copper sleeve is provided with a telescopic hole that is telescopically and slidably matched with one end of the exhaust rod, and the telescopic hole is provided with at least one first limiting plane, and the exhaust rod is provided with a second limiting plane that is in contact with the above-mentioned first limiting plane.

2. The exhaust cylinder according to claim 1, characterized in that: There are two first limiting planes, which are arranged opposite to each other on both sides of the exhaust rod.

3. The exhaust cylinder according to claim 1, characterized in that: A fixing hole is provided at the connection between the positioning copper sleeve and the rear cover.

4. The exhaust cylinder according to claim 1, wherein: Both ends of the piston are provided with connecting steps extending outwards of both ends, and the exhaust rod is provided with an annular step groove for connecting with the above-mentioned connecting steps.

5. The exhaust cylinder according to claim 1 or 4, characterized in that: A first sealing groove is provided on the exhaust rod inside the piston, a sealing ring is provided in the first sealing groove, a second sealing groove and a wear-resistant groove are provided on the outer ring of the piston, and a wear-resistant ring is provided in the wear-resistant groove.

6. The exhaust cylinder according to claim 1, characterized in that: The exhaust rod includes a piston rod and an ejector pin connected to the top of the piston rod. The outer ring side wall of the top of the ejector pin is provided with exhaust sections arranged at intervals, and the bottom of the exhaust section is provided with an inwardly contracted exhaust groove.

7. The exhaust cylinder according to claim 6, characterized in that: The front cover is connected with a sleeve, which includes a front sleeve and a rear sleeve. The sleeve hole of the front sleeve is slidably matched with the ejector pin, and an exhaust port is provided on the outer ring of the rear sleeve.

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