Connecting structure of oil cylinder mandrel

Abstract

The utility model discloses a connecting structure of an oil cylinder mandrel, which belongs to the technical field of oil cylinder production and processing, and comprises the oil cylinder mandrel arranged in an oil cylinder body, the oil cylinder mandrel is detachably connected with a flange connecting block, the flange connecting block is concentrically provided with a fixing plate, the fixing plate is connected with a working part of a non-standard machine, and the working part of the non-standard machine is provided with a clamping groove. A gap exists between the outer wall of the flange connecting block and the inner wall of the fixing plate, and in the initial state, the flange connecting block does not make contact with the fixing plate. The flange connecting block, the fixing plate and the oil cylinder mandrel are movably connected, so that the connecting capacity between the oil cylinder mandrel and the working part is guaranteed, the phenomenon that the oil cylinder moving first pulls other oil cylinders to generate unbalance loading force can be prevented under the condition of multiple oil cylinders and the condition that the oil cylinders are not synchronous, the buffering effect is achieved, and the service life of the oil cylinder is prolonged. Adjustment is synchronous, and impact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder production and processing, in particular to a connecting structure of an oil cylinder core shaft. Background Art

[0002] In the rapid and small-batch production of automotive parts, workers are sometimes needed to perform sheet metal production. When encountering parts with high strength or complex shapes, some non-standard mechanical devices are often needed (non-standard machinery is a type of mechanical equipment suitable for increasing production). The main driving force source of non-standard machinery is the cylinder, which involves how to conveniently and reliably connect the mandrel of the cylinder with the working part so that the mandrel can push and pull the working part in two directions under the drive of the cylinder.

[0003] At present, the core shaft of the oil cylinder is basically in the shape of a straight rod and cannot be directly connected to the working part. Therefore, there is an urgent need for a connection structure to connect the core shaft of the oil cylinder with the working part of the non-standard machinery. Utility Model Content

[0004] The utility model aims at the deficiencies in the prior art and provides a connecting structure for an oil cylinder core shaft.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A connection structure for a cylinder core shaft comprises a cylinder core shaft installed in a cylinder body, the cylinder core shaft is detachably connected to a flange connection block, a fixing plate is concentrically installed on the flange connection block, the fixing plate is connected to a working part of a non-standard machine, there is a gap between an outer wall of the flange connection block and an inner wall of the fixing plate, and in an initial state, the flange connection block is not in contact with the fixing plate.

[0007] Furthermore, the flange connection block is connected to the cylinder core shaft by screws.

[0008] Furthermore, at least four screws are provided.

[0009] Furthermore, the gap is 3 to 5 mm.

[0010] Furthermore, the gap is 3 mm.

[0011] Furthermore, the oil cylinder body is fixed on the oil cylinder mounting seat.

[0012] In summary, compared with the prior art, the above technical solution has the following beneficial effects:

[0013] The flange connection block, the fixing plate and the cylinder shaft are connected in a flexible manner, which not only ensures the connection ability between the cylinder shaft and the working part, but also can prevent the cylinder that moves first from pulling other cylinders to generate eccentric load force when there are cylinders in different places are out of sync in the case of multiple cylinders, thereby playing the role of buffering, adjusting synchronization and avoiding impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of the structure of an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 3 for Figure 1 A magnified view of part A in FIG.

[0017] Figure 4 This is a schematic diagram of the structure of the fixing plate in the embodiment of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the flange connection block in the embodiment of the utility model.

[0019] Explanation of the accompanying drawings: 1. Cylinder body; 2. Cylinder core shaft; 3. Flange connection block; 4. Fixing plate; 5. Cylinder mounting seat; 6. Working part; 7. Gap; 8. Front oil nozzle; 9. Rear oil nozzle. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with all the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] The utility model embodiment discloses a connecting structure of an oil cylinder core shaft.

[0022] Reference Figure 1-Figure 5 , a connection structure of a cylinder core shaft, comprising a cylinder core shaft 2 installed in a cylinder body 1, and the cylinder body 1 is fixed on a cylinder mounting seat 5. The cylinder core shaft 2 is detachably connected with a flange connection block 3, and the flange connection block 3 is connected to the cylinder core shaft 2 by screws. At least four screws are provided, and are evenly arranged along the circumference of the flange connection block 3. A fixing plate 4 is concentrically installed on the flange connection block 3, and the fixing plate 4 is connected to a working part 6 of a non-standard machine. There is a gap 7 between the outer wall of the flange connection block 3 and the inner wall of the fixing plate 4, and the gap 7 is 3 to 5 mm, and preferably the gap 7 is 3 mm. In the initial state, the flange connection block 3 is not in contact with the fixing plate 4.

[0023] When the cylinder needs to push forward, the front oil nozzle 8 on the cylinder body 1 takes in oil, and the rear oil nozzle 9 on the cylinder body 1 discharges oil. The cylinder core shaft 2 is pushed forward by the hydraulic oil and protrudes out of the cylinder body 1. The cylinder core shaft 2 acts on the working part 6 through the flange connecting block 3 to work. When the work is completed and needs to be reset, the rear oil nozzle 9 takes in oil and the front oil nozzle 8 discharges oil. The cylinder core shaft 2 is pressed back into the cylinder body 1 by the hydraulic oil pressure, and the cylinder core shaft 2 drives the flange connecting block 3 to return together. After 3 mm of the return stroke, the flange connecting block 3 contacts the fixed plate 4. Under the action of the flange connecting block 3, the fixed plate 4 is driven to move backward together, and the fixed plate 4 drives the working part 6 to complete the reset.

[0024] When multiple cylinders work together, due to the difference in oil pressure and pipeline length, there will be a slight time difference when the cylinders are filled with oil and start working. The cylinder that is filled first will move first. At this time, there is a full circle gap between the flange connection block and the fixed plate on the non-working cylinder core shaft, which will not hinder the working part from being driven by other cylinders. Within the 3mm distance travel time, the other cylinders will be filled instantly. Since the connecting part is a movable connection, the speed of the cylinders that are stressed is slow, and the speed of the cylinders that are not stressed is fast. The forces at various locations quickly balance each other and act on the working part, ensuring that the forces of each cylinder act synchronously and avoiding force impact.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection structure of a cylinder core shaft, characterized in that: The invention comprises a cylinder core shaft (2) installed in a cylinder body (1), the cylinder core shaft (2) being detachably connected to a flange connection block (3), the flange connection block (3) being coaxially installed with a fixing plate (4), the fixing plate (4) being connected to a working part (6) of a non-standard machine, a gap (7) being provided between an outer wall of the flange connection block (3) and an inner wall of the fixing plate (4), and in an initial state, the flange connection block (3) and the fixing plate (4) are not in contact.

2. The connection structure of the oil cylinder core shaft according to claim 1, characterized in that: The flange connection block (3) is connected to the oil cylinder core shaft (2) via screws.

3. The connection structure of the oil cylinder core shaft according to claim 2, characterized in that: At least four screws are provided.

4. The connection structure of the oil cylinder core shaft according to claim 1, characterized in that: The gap (7) is 3 to 5 mm.

5. The connection structure of the oil cylinder core shaft according to claim 4, characterized in that: The gap (7) is 3 mm.

6. The connection structure of the oil cylinder core shaft according to claim 1, characterized in that: The oil cylinder body (1) is fixed on the oil cylinder mounting seat (5).

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