Mounting structure for balance cylinder lubricating bearing

Abstract

The installation structure comprises a cylinder barrel, a cavity is formed in the cylinder barrel, a cylinder cover is arranged at an opening in the bottom of the cylinder barrel, a through hole is formed in the center of the cylinder cover, a first annular groove is formed in the inner side wall of the through hole, a lubricating copper sleeve is arranged in the first annular groove, and the lubricating copper sleeve is arranged in the cavity. A piston rod is arranged in the lubricating copper sleeve in a penetrating mode, a sealing ring is arranged between the piston rod and the inner side wall of the through hole of the cylinder cover, the sealing ring is located in a second annular groove in the inner side wall of the through hole of the cylinder cover, and the second annular groove is located between the first annular groove and the inner cavity of the cylinder barrel. The lubricating copper sleeve is installed at the bottom of the balance cylinder cover, the sealing ring is additionally installed above the copper sleeve, air leakage of the balance cylinder can be prevented, copper cuttings can be prevented from entering the balance cylinder body, the lubricating copper sleeve is fixed to the bottom of the balance cylinder cover through the cover plate, and follow-up maintenance and change are convenient.

Description

Technical Field

[0001] The utility model relates to an installation structure for a lubricating bearing of a balance cylinder. Background Art

[0002] With the development of the stamping market, presses are gradually developing towards the trend of automation. With the addition of automatic feeding manipulators and robots, the operating time of presses has increased significantly. Currently, almost all presses are equipped with balance cylinder devices, and the balance cylinder component can prevent accidents that may occur when the brake fails and the slider slides down due to its own weight during the operation of the press, ensuring the safety of the press during use. The balance device usually uses a self-lubricating copper sleeve to ensure the lubrication when the piston rod moves up and down. However, as the balance cylinder is used for a longer time, the copper chips after the wear of the self-lubricating copper sleeve are likely to cause scratches inside the balance cylinder body, and because the copper sleeve is inside the balance cylinder, it is not easy to replace after wear. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art and provide an installation structure for a lubricating bearing of a balance cylinder.

[0004] An installation structure for a lubricating bearing of a balance cylinder includes a cylinder barrel. A chamber is arranged inside the cylinder barrel. The bottom of the cylinder barrel is provided with an opening and a cylinder head. A through hole is arranged at the center of the cylinder head. The inner side wall of the through hole is provided with a first annular groove. A lubricating copper sleeve is arranged in the first annular groove. A piston rod passes through the lubricating copper sleeve. A sealing ring is arranged between the piston rod and the inner side wall of the through hole of the cylinder head. The sealing ring is located in a second annular groove on the inner side wall of the through hole of the cylinder head. The second annular groove is located between the first annular groove and the inner chamber of the cylinder barrel.

[0005] Preferably, the first annular groove is located at the port of the through hole of the cylinder head far from the chamber. A cover plate is arranged at the opening of the first annular groove of the cylinder head on the bottom surface of the cylinder head. A through hole for the piston rod to pass through is arranged at the center of the surface of the cover plate.

[0006] Preferably, the cover plate and the cylinder head are fixedly connected by bolts.

[0007] Preferably, a protruding extending part is arranged on the upper end surface of the cylinder head, and the extending part is embedded in the cylinder barrel.

[0008] Preferably, a sealing ring is arranged between the outer side wall of the extending part and the inner side wall of the cylinder barrel.

[0009] Beneficial Effects: Compared with the prior art, in the utility model, the lubricating copper sleeve is installed at the bottom of the balance cylinder head, and a sealing ring is added above the copper sleeve, which can not only prevent the balance cylinder from leaking air, but also prevent copper chips from entering the inside of the balance cylinder body. The lubricating copper sleeve is fixed at the bottom of the balance cylinder head through the cover plate, making subsequent maintenance and modification convenient. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of an installation structure for lubricating bearings of a balance cylinder;

[0011] In the figure, 1 is the piston rod, 2 is the cylinder barrel, 3 is the cylinder head, 4 is the sealing ring, 5 is the lubricating bronze bushing, and 6 is the cover plate. Specific implementation mode

[0012] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in combination with embodiments and drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0013] As Figure 1 shown, the piston rod 1, the cylinder barrel 2, the cylinder head 3, the sealing ring 4, the lubricating bronze bushing 5, and the cover plate 6;

[0014] An installation structure for lubricating bearings of a balance cylinder includes a cylinder barrel 2. A chamber is provided inside the cylinder barrel 2. The bottom of the cylinder barrel 2 is open and provided with a cylinder head 3. A through hole is provided at the center of the cylinder head 3. A first annular groove is provided on the inner side wall of the through hole. A lubricating bronze bushing 5 is provided in the first annular groove. A piston rod 1 is inserted through the lubricating bronze bushing 5. A sealing ring 4 is provided between the inner side wall of the through hole of the cylinder head 3 and the piston rod 1. The sealing ring 4 is located in a second annular groove on the inner side wall of the through hole of the cylinder head 3. The second annular groove is located between the first annular groove and the inner chamber of the cylinder barrel 2.

[0015] In this embodiment, the first annular groove is located at the port of the through hole of the cylinder head 3 away from the chamber. A cover plate 6 is provided at the opening of the first annular groove of the cylinder head 3 on the bottom surface of the cylinder head 3. A through hole for the piston rod 1 to pass through is provided at the center of the surface of the cover plate 6. It should be noted that the structure of the cylinder head 3 is as follows: A first annular groove for installing the lubricating bronze bushing 5 is provided at the center of the lower end surface of the cylinder head 3. A through hole is provided at the center of the first annular groove. A second annular groove for installing the sealing ring 4 is provided on the inner side wall of the through hole.

[0016] In this embodiment, the cover plate 6 and the cylinder head 3 are fixedly connected by bolts.

[0017] In this embodiment, a protruding extending portion is provided on the upper end surface of the cylinder head 3, and the extending portion is embedded in the cylinder barrel 2.

[0018] In this embodiment, a sealing ring 4 is provided between the outer side wall of the extending portion and the inner side wall of the cylinder barrel 2.

[0019] Usage instructions: During actual assembly, first install the sealing ring 4 in the second annular groove of the cylinder head 3, then fix the lubricating bronze bushing 5 in the first annular groove of the cylinder head 3 through an internal hexagonal taper end set screw, and fix the cover plate 6 of the lubricating bronze bushing 5 to the bottom of the cylinder head 3 through an internal hexagonal screw.

[0020] After passing the piston rod 1 through the inside of the sealing ring 4 and the lubricating bronze bushing 5, the cylinder head 3 and the cylinder barrel 2 are fixed using stud bolts. In this way, when the piston rod 1 moves up and down, the copper chips worn by the self-lubricating copper cannot enter the balance cylinder, and it is not necessary to disassemble the entire balance cylinder for later maintenance and modification.

[0021] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An installation structure for a lubricating bearing of a balance cylinder, characterized in that, It includes a cylinder barrel. A chamber is provided inside the cylinder barrel. A cylinder head is provided at the bottom opening of the cylinder barrel. A through hole is provided at the center of the cylinder head. A first annular groove is provided on the inner side wall of the through hole. A lubricating bronze bushing is provided in the first annular groove. A piston rod is inserted through the lubricating bronze bushing. A sealing ring is provided between the piston rod and the inner side wall of the through hole of the cylinder head. The sealing ring is located in a second annular groove on the inner side wall of the through hole of the cylinder head. The second annular groove is located between the first annular groove and the inner chamber of the cylinder barrel.

2. The installation structure of a lubricating bearing for a balance cylinder according to claim 1, characterized in that, The first annular groove is located at the port of the through hole of the cylinder head away from the chamber end. A cover plate is provided at the opening of the first annular groove of the cylinder head on the bottom surface of the cylinder head. A through hole for the piston rod to pass through is provided at the center of the surface of the cover plate.

3. The installation structure of a lubricating bearing for a balance cylinder according to claim 2, characterized in that, The cover plate and the cylinder head are fixedly connected by bolts.

4. The installation structure of a lubricating bearing for a balancing cylinder according to claim 1, characterized in that A protruding insertion part is provided on the upper end surface of the cylinder head. The insertion part is embedded in the cylinder barrel.

5. The installation structure of a lubricating bearing for a balance cylinder according to claim 4, characterized in that, A sealing ring is provided between the outer side wall of the insertion part and the inner side wall of the cylinder barrel.

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