High-precision powder forming hydraulic machine

Abstract

The utility model relates to the field of powder hydraulic structures, in particular to a high-precision powder forming hydraulic machine which comprises an upper cross beam, a central cylinder, a top cylinder, a mold frame, a stand column and a workbench. The upper sliding block is installed on the guide column of the mold frame in a sliding mode, the problem that after a hydraulic machine is used for a long time, the stand column deforms, and consequently the operation precision of the hydraulic machine is reduced is solved, the high operation precision of the hydraulic machine can still be kept after the hydraulic machine is used for a long time, and the high-precision retentivity and the market competitiveness of the structure are improved. A demolding air cylinder is further arranged, in the product demolding process, the lower ejector rod is kept still, the floating plate descends firstly, the demolding air cylinder is used for driving the upper mold plate to synchronously descend to provide buffering force for the descending step of the floating plate, and the problem that outward stress is generated in a product in the descending process of the floating plate is avoided; the problem that cracks are generated on the surface of the product is avoided, and the qualified rate of the product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of powder hydraulic structures, in particular to a high-precision powder forming hydraulic press. Background Art

[0002] Powder metallurgy is a process technology that uses metal or metal powder (or a mixture of metal powder and non-metallic powder) as raw materials, and then sintering after pressure or non-pressure forming to manufacture metal materials, composites and various types of products. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable for mass production. At present, powder metallurgy technology has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industries, and has become one of the most dynamic branches in new materials science. With the rapid development of domestic powder technology, many metal materials use powder forming technology, that is, metal powder is pressed into a cake shape by a powder forming press, and then sintered to make metal products.

[0003] In the existing powder forming hydraulic press, the upper template is installed below the upper slider, and the upper slider is installed on multiple columns connecting the upper beam and the workbench. With the long-term use of the hydraulic press, the columns will inevitably deform, which will lead to reduced operating accuracy. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-precision powder forming hydraulic press, which solves the problem in the prior art that with the long-term use of the hydraulic press, the column will inevitably deform, which will lead to reduced operating accuracy.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a high-precision powder molding hydraulic press, the innovation of which is: comprising an upper crossbeam, a center cylinder, a top cylinder, a mold frame, a column and a workbench, the upper crossbeam and the workbench are connected and fixed by four columns distributed in a rectangular shape, and the mold frame is vertically arranged between the four columns;

[0006] The mold frame includes a guide column and an upper slider, an upper template, a middle template, a floating plate and a lower ejector rod. The guide column is vertically arranged, and there are four guide columns distributed in a rectangular shape. The upper slider, the upper template, the floating plate, the middle template and the lower ejector rod are arranged in sequence from top to bottom, and the upper slider, the upper template and the floating plate are all slidably mounted on the guide column, and the middle template is mounted at the bottom of the guide column;

[0007] The central cylinder is installed in the upper slider, and its output end is vertically downwardly arranged and connected to the upper template, and the upper template is driven to rise or fall in the vertical direction along the guide column by the central cylinder;

[0008] The central cylinder, upper slider, upper template, middle template, floating plate and lower ejector are all coaxially arranged;

[0009] The ejector cylinder is arranged on a workbench, and an output end thereof is vertically upward and connected to the lower ejector rod.

[0010] Furthermore, the mold frame also includes a demoulding cylinder;

[0011] The demoulding cylinder is installed on the top of the upper slider, and the output end of the demoulding cylinder vertically passes through the upper slider and is connected to the upper template. The demoulding cylinder drives the upper template to rise or fall vertically along the guide column.

[0012] Furthermore, a base is provided at the bottom of the workbench.

[0013] Furthermore, a bottom plate is provided between the middle template and the workbench, the bottom plate is connected to the floating plate via a plurality of connecting columns, and the middle template is slidably connected to the connecting columns.

[0014] The advantages of the utility model are:

[0015] 1) In the utility model, the upper slider is slidably installed on the guide column of the mold frame, which avoids the problem that the hydraulic press column is deformed after long-term use, resulting in reduced operating accuracy of the machine. The high operating accuracy of the hydraulic press can still be maintained after long-term use, thereby improving the high-precision retention and market competitiveness of the structure.

[0016] 2) The utility model also has a demoulding cylinder, which is installed on the upper slider and connected to the upper template. During the demoulding process of the product, the lower push rod remains stationary, the floating plate moves downward first, and the demoulding cylinder is used to drive the upper template to move downward synchronously, providing a buffer force for the downward step of the floating plate, avoiding the problem of outward stress in the product during the downward movement of the floating plate, avoiding the problem of cracks on the product surface, and ensuring the product qualification rate.

[0017] 3) In the present invention, a base is further provided at the bottom of the workbench, and the base is used to provide support for the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is the front view of the utility model.

[0020] Figure 2 The mold frame of the utility model is shown in FIG. Figure 1 .

[0021] Figure 3 The mold frame of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0022] like Figures 1 to 3 A high-precision powder molding hydraulic press shown in the figure includes an upper crossbeam 1, a central cylinder 47, a top cylinder 3, a mold frame 4, columns 5 and a workbench 7. The upper crossbeam 1 and the workbench 7 are connected and fixed by four columns 5 distributed in a rectangular shape, and the mold frame 4 is vertically arranged between the four columns 5.

[0023] The mold frame 4 includes a guide column 41 and an upper slider 42, an upper mold plate 43, a middle mold plate 44, a floating plate 45 and a lower push rod 46. The guide column 41 is vertically arranged. The guide column 41 has four and is distributed in a rectangular shape. The upper slider 42, the upper mold plate 43, the floating plate 45, the middle mold plate 44 and the lower push rod 46 are arranged in sequence from top to bottom, and the upper slider 42, the upper mold plate 43, the floating plate 45 are all slidably installed on the guide column 41, and the middle mold plate 44 is installed at the bottom of the guide column 41.

[0024] The upper slider 42 is slidably installed on the guide column 41 of the mold frame 4, which avoids the problem of the hydraulic press's operating accuracy being reduced due to deformation of the column 5 after long-term use. The high operating accuracy of the hydraulic press can still be maintained after long-term use, thereby improving the high-precision retention and market competitiveness of the structure.

[0025] The central cylinder 2 is installed in the upper slider 42 , and its output end is vertically arranged downward and connected to the upper template 43 . The upper template 43 is driven by the central cylinder 2 to rise or fall in the vertical direction along the guide column 41 .

[0026] The central cylinder 2, the upper slider 42, the upper template 43, the middle template 44, the floating plate 45 and the lower ejector rod 46 are all coaxially arranged.

[0027] The ejector cylinder 3 is arranged on the workbench 7 , and its output end is vertically upward and connected to the lower ejector rod 46 .

[0028] The mold frame 4 also includes a demoulding cylinder 47.

[0029] The demoulding cylinder 47 is installed on the top of the upper slider 42. The output end of the demoulding cylinder 47 vertically passes through the upper slider 42 and is connected to the upper template 43. The demoulding cylinder 47 drives the upper template 43 to vertically rise or fall along the guide column 41.

[0030] During the product demoulding process, the lower push rod 46 remains stationary, the floating plate 45 moves downward first, and the demoulding cylinder 47 is used to drive the upper template 43 to move downward synchronously, providing a buffer force for the downward step of the floating plate 45, thereby avoiding the problem of outward stress in the product during the downward process of the floating plate 45 and the problem of cracks on the product surface, thereby ensuring the product qualification rate.

[0031] A base 6 is further provided at the bottom of the workbench 7 , and the base 6 is used to provide support for the workbench 7 .

[0032] A base plate 8 is also provided between the middle template 44 and the workbench 7. The base plate 8 is connected to the floating plate 45 via four connecting columns 9. The middle template 44 is slidably connected to the connecting columns. The floating cylinder is installed on the workbench 7. The output end of the floating cylinder is vertically arranged upward and connected to the base plate 8 to drive the floating plate 45 to rise and fall.

[0033] Working principle of this patent:

[0034] During demoulding, the lower push rod 46 remains stationary, the floating plate 45 moves downward first, and the demoulding cylinder 47 is used to drive the upper template 43 to move downward synchronously, providing a buffer force for the downward step of the floating plate 45, thereby avoiding the problem of outward stress in the product during the downward movement of the floating plate 45 and the problem of cracks on the product surface, thereby ensuring the product qualification rate. Then the upper template 43 moves upward and the middle template 44 moves downward to take out the product.

[0035] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision powder forming hydraulic press, characterized in that: It includes an upper crossbeam, a central cylinder, a top cylinder, a mold frame, columns and a workbench. The upper crossbeam and the workbench are connected and fixed by four columns distributed in a rectangular shape. The mold frame is vertically arranged between the four columns. The mold frame includes a guide column and an upper slider, an upper template, a middle template, a floating plate and a lower ejector rod. The guide column is vertically arranged, and there are four guide columns distributed in a rectangular shape. The upper slider, the upper template, the floating plate, the middle template and the lower ejector rod are arranged in sequence from top to bottom, and the upper slider, the upper template and the floating plate are all slidably mounted on the guide column, and the middle template is mounted at the bottom of the guide column; The central cylinder is installed in the upper slider, and its output end is vertically arranged downward and connected to the upper template. The upper template is driven to rise or fall in the vertical direction along the guide column by the central cylinder; The central cylinder, upper slider, upper template, middle template, floating plate and lower ejector are all coaxially arranged; The ejector cylinder is arranged on a workbench, and an output end thereof is vertically upward and connected to the lower ejector rod.

2. A high-precision powder forming hydraulic press according to claim 1, characterized in that: The mold frame also includes a demoulding cylinder; The demoulding cylinder is installed on the top of the upper slider, and the output end of the demoulding cylinder vertically passes through the upper slider and is connected to the upper template. The demoulding cylinder drives the upper template to rise or fall vertically along the guide column.

3. A high-precision powder forming hydraulic press according to claim 1, characterized in that: The bottom of the workbench is also provided with a base.

4. A high-precision powder forming hydraulic press according to claim 1, characterized in that: A bottom plate is also provided between the middle template and the workbench. The bottom plate is connected to the floating plate via a plurality of connecting columns, and the middle template is slidably connected to the connecting columns.

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