Flexible pneumatic press device based on segmented elastic compensation

Abstract

The utility model discloses a kind of flexible pneumatic presser plate devices based on sectional elastic compensation, including presser plate main body, the presser plate unit for contacting workpiece being movably arranged on presser plate main body and the elastic element being arranged between presser plate main body and presser plate unit, presser plate unit is arranged multiple.The utility model based on sectional elastic compensation flexible pneumatic presser plate device, by setting multiple presser plate unit, the pressure distribution uniformity when applying pressure can be improved, can realize deformation inhibition, under the same load, maximum local deformation amount is reduced from 1.2mm to below 0.3mm, and pressure distribution can be adjusted according to workpiece profile automatically, without frequent manual adjustment.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic pressure plate technology, specifically a flexible pneumatic pressure plate device based on segmented elastic compensation. Background Technology

[0002] Traditional pneumatic pressure plates use a one-piece rigid steel structure, which has the following drawbacks:

[0003] ①Uncontrollable local deformation: When pressure is applied, uneven workpiece surface or uneven pressure distribution can cause local bending deformation of the pressure plate, affecting the stability of workpiece clamping;

[0004] ② Uneven contact: Rigid contact is prone to causing indentations or stress concentration on the workpiece surface, especially for soft or thin-walled workpieces, which pose a high risk of damage.

[0005] ③ Poor adaptability: It cannot adjust the pressure distribution according to the workpiece contour, requiring frequent manual adjustments, which is inefficient.

[0006] Chinese patent application number 201520005896.2 discloses a CNC pneumatic pressure plate, applied to the Y-axis of CNC precision carving. The pneumatic pressure plate includes a work platform, cylinders, and a pressure plate. Cylinders are located on both sides of the work platform, and the pressure plate is located above the work platform. However, the technical solution disclosed in this patent document also fails to solve the aforementioned technical problem.

[0007] A flexible pneumatic pressure plate device based on segmented elastic compensation is provided, particularly concerning improving the uniformity of pressure distribution during pressure application. Utility Model Content

[0008] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a flexible pneumatic pressure plate device based on segmented elastic compensation, with the purpose of improving the uniformity of pressure distribution during pressure application.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a flexible pneumatic pressure plate device based on segmented elastic compensation, including a pressure plate body, a pressure plate unit movably disposed on the pressure plate body and used for contacting the workpiece, and an elastic element disposed between the pressure plate body and the pressure plate unit, wherein multiple pressure plate units are provided.

[0010] The pressure plate units are arranged in multiple rows on the pressure plate body, and all pressure plate units in the same row are arranged sequentially along the length of the pressure plate body.

[0011] A plurality of elastic elements are provided between each of the pressure plate units and the pressure plate body.

[0012] At least three elastic elements are provided between each of the pressure plate units and the pressure plate body.

[0013] The elastic element is a cylindrical helical spring and is a compression spring.

[0014] The pressure plate body is provided with a screw threaded on it, and a screw step sleeve is provided on the screw threaded on it. The pressure plate unit is provided with a through hole through which the screw threaded on it passes.

[0015] This utility model is based on a segmented elastic compensation flexible pneumatic pressure plate device. By setting multiple pressure plate units, it can improve the uniformity of pressure distribution during pressure application and achieve deformation suppression. Under the same load, the maximum local deformation is reduced from 1.2mm to below 0.3mm. Moreover, it can automatically adjust the pressure distribution according to the workpiece contour without frequent manual adjustment. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following:

[0017] Figure 1 This is a schematic diagram of the structure of the flexible pneumatic pressure plate device based on segmented elastic compensation of this utility model;

[0018] Figure 2 This is an exploded view of the flexible pneumatic pressure plate device based on segmented elastic compensation according to this utility model.

[0019] The markings in the diagram are: 1. Pressure plate body; 2. Pressure plate unit; 3. Elastic element; 4. Plug screw; 5. Screw step sleeve. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of this utility model, and to facilitate its implementation.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a flexible pneumatic pressure plate device based on segmented elastic compensation, including a pressure plate body 1, a pressure plate unit 2 movably disposed on the pressure plate body 1 for contacting the workpiece, and an elastic element 3 disposed between the pressure plate body 1 and the pressure plate unit 2, wherein multiple pressure plate units 2 are provided.

[0022] Specifically, such as Figure 1 and Figure 2As shown, the pressure plate units 2 are arranged in multiple rows on the pressure plate body 1. All pressure plate units 2 in the same row are arranged sequentially along the length direction of the pressure plate body 1. All pressure plate units 2 in the same row are located in the same guide groove provided on the pressure plate body 1. The guide groove is a rectangular groove extending along the length direction of the pressure plate body 1.

[0023] like Figure 1 and Figure 2 As shown, multiple elastic elements 3 are provided between each pressure plate unit 2 and the pressure plate body 1, with at least three elastic elements 3 provided. The elastic elements 3 are arranged sequentially and equidistantly along the length direction of the pressure plate unit 2, and the length direction of the pressure plate unit 2 is parallel to the length direction of the pressure plate body 1. The elastic elements 3 are cylindrical helical springs and are compression springs, and the elastic elements 3 apply an elastic force to the pressure plate unit 2.

[0024] like Figure 1 and Figure 2 As shown, a stopper screw 4 is provided on the pressure plate body 1, and a screw step sleeve 5 is provided on the stopper screw 4. The pressure plate unit 2 has a through hole through which the stopper screw 4 passes. An elastic element 3 is sleeved on the stopper screw 4. The screw step sleeve 5 is installed on one end of the stopper screw 4 and serves to limit the movement of the pressure plate unit 2. The pressure plate unit 2 has a groove for the screw step sleeve 5 to be embedded. The stopper screw 4, as the core connecting and guiding component, passes through the pressure plate body 1 and the spring flexible unit, providing axial pressure transmission and radial floating compensation.

[0025] In this embodiment, the pressure plate body 1 is an aluminum alloy or steel frame, each section having through holes, stepped holes, and guide grooves for installing the plug screws 4, spring assemblies, and pressure plate units 2. The pressure plate unit 2 is a textured polyoxymethylene board, fixed to the bottom of the pressure plate by the plug screws 4 and screw stepped sleeves 5, directly contacting the workpiece. The elastic element 3 is a stainless steel helical spring, pre-compressed and installed between the pressure plate body 1 and the pressure plate unit 2, providing elastic pressure compensation. The screw stepped sleeve 5 is a stepped sleeve with internal threads, threaded to the plug screws 4, used to fix the pressure plate unit 2 and adjust the pre-compression.

[0026] In this embodiment, as Figure 1 and Figure 2 As shown, the pressure plate units 2 are arranged in four rows on the pressure plate body 1, with four pressure plate units 2 in the same row.

[0027] The component assembly relationship and functional implementation of the flexible pneumatic pressure plate device are as follows:

[0028] Step 1: Process the main body of the pressure plate in sections;

[0029] • The main body of the pressure plate 1 is divided into multiple independent pressure sections, and each section is machined with 3 through holes (the hole diameter is slightly larger than the diameter of the plug screw 4, allowing for radial micro-movement);

[0030] • Three countersunk holes are evenly machined between each pair of through holes for installing springs.

[0031] Step 2: Pre-assemble the elastic element 3 and the pressure plate unit 2;

[0032] • The elastic element 3 is placed in the countersunk hole of the pressure plate body 1, and the pressure plate unit 2 is installed;

[0033] Step 3: Install screw 4;

[0034] • The screw 4 passes through the through hole of the pressure plate body 1 and the elastic element 3, and its lower end is connected to the threaded stepped sleeve on the pressure plate unit 2, thus fixing the pressure plate unit 2 to the bottom of the pressure plate.

[0035] When in use, the flexible pneumatic pressure plate device is installed on a fixture, which is equipped with a pneumatic system and a cylinder. The cylinder is connected to the pressure plate body 1. The working principle is dynamically described as follows:

[0036] • Pressurization stage: The pneumatic system drives the cylinder to press down → the main body of the pressure plate 1 moves down as a whole → the pressure plate unit 2 contacts the product surface → the reaction force of the workpiece compresses the spring → each segment of the spring dynamically adjusts the compression amount according to the contact resistance to ensure uniform pressure;

[0037] • Adaptive compensation: When the workpiece surface is uneven, the pressure of each section is adjusted by the pressure plate unit 2 and the spring force to automatically adjust the segment pressure and avoid local false pressure;

[0038] • Depressurization stage: The pneumatic system drives the cylinder to lift up → the main body of the pressure plate 1 moves upward as a whole → the pressure plate unit 2 leaves the product surface → the spring rebounds and pushes the pressure plate unit 2 to reset.

[0039] The flexible pneumatic pressure plate device with the above structure has the following advantages:

[0040] ① Pressure uniformity: Finite element analysis shows that the standard deviation of pressure distribution is reduced by about 60% compared with traditional pressure plates;

[0041] ② Deformation suppression: Under the same load, the maximum local deformation is reduced from 1.2mm to below 0.3mm;

[0042] ③ Expanded applicability: The tolerance for workpiece surface unevenness can be increased to ±0.5mm (originally ±0.1mm).

[0043] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A flexible pneumatic pressure plate device based on segmented elastic compensation, characterized in that: It includes a pressure plate body, a pressure plate unit that is movably disposed on the pressure plate body and used to contact the workpiece, and an elastic element disposed between the pressure plate body and the pressure plate unit, with multiple pressure plate units.

2. The flexible pneumatic pressure plate device based on segmented elastic compensation according to claim 1, characterized in that: The pressure plate units are arranged in multiple rows on the pressure plate body, and all pressure plate units in the same row are arranged sequentially along the length of the pressure plate body.

3. The flexible pneumatic pressure plate device based on segmented elastic compensation according to claim 1, characterized in that: Multiple elastic elements are provided between each of the pressure plate units and the pressure plate body.

4. The flexible pneumatic pressure plate device based on segmented elastic compensation according to claim 3, characterized in that: At least three elastic elements are provided between each of the pressure plate units and the pressure plate body.

5. The flexible pneumatic pressure plate device based on segmented elastic compensation according to any one of claims 1 to 4, characterized in that: The elastic element is a cylindrical helical spring and is a compression spring.

6. The flexible pneumatic pressure plate device based on segmented elastic compensation according to any one of claims 1 to 4, characterized in that: The pressure plate body is provided with a screw threaded on it, and a screw step sleeve is provided on the screw threaded on it. The pressure plate unit is provided with a through hole through which the screw threaded on it passes.

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