Anti-deformation hydraulic cushion adopting long-strip-shaped cushion plate structure

Abstract

The utility model discloses an anti-deformation hydraulic cushion adopting a long-strip-shaped cushion plate structure, which belongs to the field of hydraulic drawing presses, and is characterized in that the anti-deformation hydraulic cushion comprises a workbench body, drawing rods are movably connected to the outside of the workbench body, the drawing rods are uniformly distributed, a hydraulic cushion body is sleeved at the outer ends of the drawing rods, and the hydraulic cushion body is fixedly connected with the workbench body. A long-strip-shaped cushion plate is installed at the upper end of the hydraulic cushion body. The long-strip-shaped cushion plate is arranged, the long-strip-shaped cushion plate is different from a traditional round cushion block, and the area of the long-strip-shaped cushion plate made of 45 steel materials is actually 2.25 times that of the round cushion block, so that even if the stress of a stretching rod used by a user reaches the limit, the unit stress area of the long-strip-shaped cushion plate does not exceed the allowable stress of the materials; therefore, the upper surface of the hydraulic cushion does not generate non-recoverable plastic deformation, the strength of the hydraulic cushion is guaranteed, the situation that the surface of the hydraulic cushion is pressed and deformed is reduced after practical inspection of a user, and the structure can be stretched more conveniently and efficiently.

Description

Technical Field

[0001] The utility model relates to the field of stretching hydraulic presses, in particular to an anti-deformation hydraulic pad with a long strip pad structure. Background Art

[0002] Thin plate stretching hydraulic press is widely used in stretching, punching, flanging, forming and other processes of automobile parts. The upper part of the hydraulic press is divided into upper and lower parts by the opening position. The upper part includes the upper crossbeam, slide, upper locking nut, upper adjustment nut and upper cylinder, and the lower part includes the bottom workbench, additional table, hydraulic pad, stretching rod and blank holding cylinder, etc.

[0003] The existing stretching hydraulic press has certain drawbacks when it is in operation. First of all, the number of stretching rods used by different users is different. In order to save costs, users often use a relatively small number of stretching rods. When the machine is stretching, the stretching force on each stretching rod has basically reached the limit of the material used for the stretching rod. In addition, the outer diameter of the circular pad is generally only 10mm larger than the outer diameter of the stretching rod, so the force area of ​​the circular pad is not much larger than that of the stretching rod, and the force per unit area of ​​the circular pad is still very large. For this reason, we propose an anti-deformation hydraulic pad with a long strip pad structure. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present utility model is to provide an anti-deformation hydraulic pad with a long strip pad structure. By setting the long strip pad, the long strip pad is different from the traditional round pad. The area of ​​the long strip pad is 2.25 times that of the round pad. Therefore, even if the stretching rod used by the user is subjected to the limit, the unit force area of ​​the long strip pad will not exceed the allowable stress of the material. Therefore, the upper surface of the hydraulic pad will not produce irreversible plastic deformation, thereby ensuring the strength of the hydraulic pad. After this change, after practical testing by users, the occurrence of compression deformation of the hydraulic pad surface is reduced, making the stretching operation of the structure more convenient and efficient.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A deformation-proof hydraulic pad adopts a long pad structure, comprising a workbench body, the outside of which is movably connected with stretching rods, which are evenly distributed, the outer ends of which are sleeved with a hydraulic pad body, and the upper end of which is installed with a long pad.

[0007] The strength of the hydraulic pad is ensured by installing long pads.

[0008] Furthermore, the long pads are evenly distributed, and the bottom end of the stretching rod passes through and extends to the inner end of the hydraulic pad body.

[0009] By installing the hydraulic pad body and connecting the hydraulic pad body with the stretching rod, the stretching positioning of the stretching rod can be facilitated to achieve the purpose of the stretching process.

[0010] Furthermore, the hydraulic pad body is located at the outer end of the workbench body, and a pressure cylinder is installed at the inner end of the hydraulic pad body.

[0011] By installing the edge pressing cylinder, the connection and stretching between the device structures can be made more stable.

[0012] Furthermore, the other end of the edge pressing cylinder away from the hydraulic pad body is located at the outer end of the workbench body.

[0013] By installing the workbench body, the workbench body can be supported and connected on the outside of the tensile structure, making the device more stable when performing the pulling movement.

[0014] Furthermore, an additional table plate is fixedly connected to the outer end of the workbench body.

[0015] By installing an additional platform, the stretching rod can be made more stable during stretching.

[0016] Furthermore, a stretching rod is sleeved on the inner end of the additional table, and a pressing cylinder is movably connected to the lower side of the stretching rod, and the bottom end of the pressing cylinder extends to the bottom end of the workbench body.

[0017] By installing the stretching rod, the stretching rod is ejected under the drive of the edge holding cylinder.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. By setting up long pads, which are different from traditional round pads, the long pads are made of 45 steel material. The area of ​​the long pads is actually 2.25 times that of the round pads. Therefore, even if the tension rod used by the user is stressed to the limit, the unit stress area of ​​the long pads will not exceed the allowable stress of the material. Therefore, the upper surface of the hydraulic pad will not produce irreversible plastic deformation, ensuring the strength of the hydraulic pad. After this change, after practical testing by users, the occurrence of compression deformation of the hydraulic pad surface is reduced, making the stretching operation of the structure more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall planar structure of this embodiment;

[0021] Figure 2 It is a structural diagram of the plane of the long pad in this embodiment.

[0022] In the figure, 1. Workbench body; 2. Additional table plate; 3. Stretching rod; 4. Hydraulic pad body; 5. Long pad; 6. Edge pressing cylinder. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0025] Reference Figure 1-2 As shown in the preferred embodiment of the present utility model:

[0026] Example 1

[0027] See also Figure 1 The utility model provides a technical solution: an anti-deformation hydraulic pad with a long pad structure, comprising a workbench body 1, the outside of the workbench body 1 is movably connected with a stretching rod 3, the stretching rod 3 is evenly distributed, the outer end of the stretching rod 3 is sleeved with a hydraulic pad body 4, and the upper end of the hydraulic pad body 4 is installed with a long pad 5.

[0028] The long pads 5 are evenly distributed, and the bottom end of the stretching rod 3 passes through and extends to the inner end of the hydraulic pad body 4.

[0029] The hydraulic pad body 4 is located at the outer end of the workbench body 1 , and the inner end of the hydraulic pad body 4 is installed with a pressure cylinder 6 .

[0030] The other end of the edge holding cylinder 6 away from the hydraulic pad body 4 is located at the outer end of the workbench body 1.

[0031] During traditional stretching operation, circular pads are used. The material of the circular pads is 45 steel and has been heat treated to increase the hardness. If the force on a single circular pad is close to the limit of the allowable stress of the circular pad material itself, the force on the corresponding part of the hydraulic pad pressed by the bottom of the circular pad will inevitably exceed the allowable stress value of the hydraulic pad panel material Q235, and damage will occur at the circular pad of the hydraulic pad panel. Therefore, the patent application changes the gasket to a long strip pad 5. The long strip pad 5 is a long structure. The circular pads and the long strip pad 5 are made of 45 steel material. The allowable stress value of 45 steel material is about 236MPa, and the allowable stress value of the hydraulic pad panel material Q235 is about 150MPa. Under the same force area, the pressure that the unit area of ​​45 steel material can withstand is 1.6 times that of Q235 material. That is to say, when the area of ​​the long strip pad 5 is 1.6 times the area of ​​the circular pad, the surface of the hydraulic pad body 4 will just not be deformed.

[0032] Example 2

[0033] See also Figure 1 - Figure 2 The utility model provides a technical solution: an anti-deformation hydraulic pad adopting a long strip pad structure, comprising:

[0034] An additional table plate 2 is fixedly connected to the outer end of the workbench body 1 .

[0035] The inner end of the additional table plate 2 is sleeved with a stretching rod 3 , and a pressure cylinder 6 is movably connected to the bottom of the stretching rod 3 , and the bottom end of the pressure cylinder 6 extends to the bottom end of the workbench body 1 .

[0036] The edge pressing cylinder 6 is installed in the middle position of the bottom workbench body 1. The top of the piston rod of the edge pressing cylinder 6 is fixed by a nut and the hydraulic pad body 4, making the connection and stretching between the device structure more stable. The workbench body 1 can be supported and connected on the outside of the stretching structure, making the device more stable when performing pulling movement. The stretching rod 3 is a slender rod with a step on one side, and the additional table 2 has a hole with a step. Multiple stretching rods 3 are hung under the additional table 2 through this step, so that the stretching rod 3 is more stable when used for stretching.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An anti-deformation hydraulic pad with a long strip pad structure, characterized by: The invention comprises a workbench body (1), the outside of which is movably connected to stretching rods (3), the stretching rods (3) being evenly distributed, the outer ends of the stretching rods (3) being sleeved with hydraulic pad bodies (4), and the upper ends of the hydraulic pad bodies (4) being installed with long pads (5).

2. The anti-deformation hydraulic pad with a long strip pad structure according to claim 1, characterized in that: The long pads (5) are evenly distributed, and the bottom end of the stretching rod (3) passes through and extends to the inner end of the hydraulic pad body (4).

3. The anti-deformation hydraulic pad with a long strip pad structure according to claim 2, characterized in that: The hydraulic pad body (4) is located at the outer end of the workbench body (1), and a pressure cylinder (6) is installed at the inner end of the hydraulic pad body (4).

4. The anti-deformation hydraulic pad with a long strip pad structure according to claim 3, characterized in that: The other end of the edge pressing cylinder (6) away from the hydraulic pad body (4) is located at the outer end of the workbench body (1).

5. The anti-deformation hydraulic pad with a long strip pad structure according to claim 1, characterized in that: The outer end of the workbench body (1) is fixedly connected to an additional table plate (2).

6. The anti-deformation hydraulic pad with a long strip pad structure according to claim 5, characterized in that: The inner end of the additional table (2) is sleeved with a stretching rod (3), and a pressing cylinder (6) is movably connected below the stretching rod (3), and the bottom end of the pressing cylinder (6) extends to the bottom end of the workbench body (1).

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