Bottom-top and floating magnetic material wet forming strip hydraulic press

Abstract

The present invention discloses a bottom-top and floating type hydraulic press for wet-molding strips of magnetic materials, and belongs to the field of hydraulic presses. The hydraulic press of the present invention comprises an upper workbench and a lower workbench arranged in a coordinated manner, and the two sides of the upper workbench and the lower workbench are connected by two columns, an upper mold is arranged below the upper workbench, and a lower mold is correspondingly arranged above the lower workbench, and the center lines of the two columns are respectively consistent with the center line positions of the mold cavities on the upper mold and the center line positions of the lower mold. The present invention overcomes the current situation in the prior art that the magnetic material molding hydraulic press equipment has a large molding die surface, the mold cavity molding accuracy consistency is not high, and it is easy to affect the overall processing efficiency. It is intended to provide a bottom-top and floating type hydraulic press for wet-molding strips of magnetic materials, so that the manufacturing cost of the equipment is greatly reduced, its flexibility of use is greatly increased, and it is helpful to improve the product molding performance and dimensional accuracy, and it has more flexible production adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic material forming hydraulic presses, and more specifically to a bottom-top and floating magnetic material wet forming strip hydraulic press. Background Art

[0002] With the development of science and technology and modern life, magnetic material products have been more widely used in high-energy and high-efficiency industries such as military industry, frequency conversion technology, automobiles, and home appliances, from the original applications of speakers, motors, and fitness equipment. The production capacity and grade requirements have increased significantly year by year, so higher requirements have been put forward for the performance of wet molding hydraulic presses used to manufacture magnetic material products. In order to meet the needs of mass production and reduce labor, the molding tonnage of traditional presses has become larger and larger, but with it, various inevitable defects and deficiencies have also appeared. As the molding die surface becomes larger and larger, large-scale high-precision equipment must be used to complete the mold processing. The processing cost of the mold has risen sharply. As the number of mold cavities increases, the accuracy consistency of each mold cavity deteriorates. At the same time, large forklifts are needed for mold installation and disassembly, and working space for the forklifts must be reserved on the workplace. In the entire production process, since each molding equipment is produced in large quantities, once equipment failure occurs, the entire production output will be greatly affected if one equipment is stopped. When there are many varieties of products but the output is not too large, molds will be frequently replaced and material pipes and barrels will be cleaned, which not only delays production time but also causes unnecessary waste of raw materials.

[0003] After searching, a large number of patents have been disclosed about the optimization of hydraulic forming technology of magnetic materials. For example, the application case with application number 2012102422738 discloses a fully automatic wet magnetic material forming hydraulic press, including an upper crossbeam and a workbench. The workbench and the upper crossbeam are connected and fixed by guide pillars at the four corners. A slider that slides with the guide pillars is arranged between the upper crossbeam and the workbench. A top cylinder is arranged in the workbench, and an automatic feeding mechanism is arranged on one side of the workbench. For example, the application case with application number 201910568803X discloses a 1500KN magnetic material wet forming hydraulic press and hydraulic forming process. The hydraulic press body includes an upper workbench and a lower workbench arranged in an upper and lower manner, a magnetic conductive column connected and supported between the upper workbench and the lower workbench, a lower mold component installed on the lower workbench, and an upper mold component installed on the upper workbench; for example, the application case with application number 2020208239967 discloses a fully automatic wet magnetic material forming hydraulic press, including a base, the upper side wall of the base is symmetrically fixedly connected with two support plates, the upper ends of the two support plates are fixedly connected with the same mounting plate, the upper side wall of the mounting plate is fixedly connected with a hydraulic device, and the lower side wall of the hydraulic device is slidably connected with a pressure head. The above applications all involve structural improvements to the forming hydraulic press, but they also have the defects of large equipment and low precision consistency. The industry has not paid much attention to this direction. Summary of the invention

[0004] 1. Technical problem to be solved by the invention

[0005] The purpose of the present invention is to overcome the current situation in which the magnetic material molding hydraulic press equipment has a large molding die surface, the mold cavity molding accuracy consistency is not high, and it is easy to affect the overall processing efficiency. It is intended to provide a bottom-top and floating magnetic material wet molding strip hydraulic press, which greatly reduces the manufacturing cost of the equipment, greatly increases its flexibility of use, and helps to improve the product molding performance and dimensional accuracy, and has more flexible production adaptability.

[0006] 2. Technical solution

[0007] In order to achieve the above object, the technical solution provided by the present invention is:

[0008] The bottom-top and floating magnetic material wet-type strip-forming hydraulic press of the present invention comprises an upper workbench and a lower workbench which are arranged in a coordinated manner from top to bottom. The two sides of the upper workbench and the lower workbench are connected by two columns. An upper mold is arranged below the upper workbench, and a lower mold is correspondingly arranged above the lower workbench. The center lines of the two columns are respectively consistent with the center line positions of the mold cavities on the upper mold and the center line positions of the lower mold.

[0009] Furthermore, a slider is provided under the upper workbench, the slider is slidably connected to the column, a demagnetization device is installed at the lower end of the slider, the upper mold is installed at the lower end of the demagnetization device, and the center line of the two columns is also consistent with the center line position of the demagnetization device.

[0010] Furthermore, the demagnetization device includes a coil core and a coil, the upper end of the coil core is connected to the slider, the lower end of the coil core is connected to the upper mold, and the coil surrounds the coil core.

[0011] Furthermore, only a single row or double row of mold cavities is provided on the upper mold, which are extended in a row in the direction of the center line connecting the two pillars. In the case of a single row of mold cavities, the center line connecting the multiple mold cavities in a single row corresponds to the center line connecting the two pillars; in the case of a double row of mold cavities, the center line between the two rows corresponds to the center line connecting the two pillars.

[0012] Furthermore, the width of the column on one side is smaller than the width of the upper mold and the lower mold.

[0013] Furthermore, the column is a cylindrical column.

[0014] Furthermore, a lower die side frame is provided on the lower workbench, a lower die is provided on the lower die side frame, and a lower punch fixing plate is provided correspondingly below the lower die, a lower punch corresponding to the upper die cavity is provided on the lower punch fixing plate, and the lower end of the lower punch fixing plate is connected to the lower workbench through a lower die guide column.

[0015] Furthermore, it also includes a feeding component, which includes an injection stirring barrel and an injection cylinder. An agitator is also provided in the injection stirring barrel, and a slurry filter is also provided at the end of the injection cylinder; and it is connected to the injection position through a sealing valve.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] (1) The strip-type hydraulic press of the present invention adopts the design of two left and right columns, and strictly limits their special position matching. The coil magnetization circuit of the hydraulic press just makes the center line of the mold flush with the center line of the column, and the magnetization performance is optimized. It overcomes the problem of the traditional four-column structure where the center of the mold is located in the gap between the two columns on both sides, which affects the magnetization performance, and the product molding performance is better.

[0019] (2) The strip-type hydraulic press of the present invention changes the overall mold table into a long strip structure. The mold processing does not require the use of large-scale high-precision machine tools, and the mold cavity is greatly reduced. The molding consistency and molding qualification rate of the product are greatly improved. Since the weight of the mold is greatly reduced, there is no need to use a forklift to replace the mold, which saves time, labor and production space. The manufacturing cost of the equipment is greatly reduced, and its flexibility of use is greatly increased. In response to the ever-changing market demand for various varieties, the adjustment of its products and the replacement of production varieties are particularly flexible and fast, and can reduce the waste of raw materials when changing molds, while also saving labor and mold manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the strip type hydraulic press of the present invention;

[0021] Figure 2 It is a side structural schematic diagram of the strip-type hydraulic press of the present invention.

[0022] Explanation of the symbols in the schematic diagram:

[0023] 101. Upper oil cylinder; 102. Lock nut for column; 103. Upper workbench; 104. column; 105. slider; 106. wire core; 107. wire package; 108. upper die; 109. lower die; 110. lower punch; 111. lower die side frame; 112. lower punch fixing plate; 113. lower die guide column; 114. lower oil cylinder; 115. lower workbench; 116. injection mixing barrel; 117. injection cylinder; 118. sealing valve; 119. slurry filter. DETAILED DESCRIPTION

[0024] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] The present invention will be further described below in conjunction with the embodiments.

[0027] Example 1

[0028] like Figure 1 and Figure 2 As shown, the bottom-top and floating magnetic material wet molding strip hydraulic press of this embodiment includes an upper workbench 103 and a lower workbench 115 which are arranged in an upper and lower manner. The two sides of the upper workbench 103 and the lower workbench 115 are connected by two columns 104. An upper mold 108 is arranged below the upper workbench 103, and a lower mold 109 is correspondingly arranged above the lower workbench 115. The center lines of the two columns 104 are respectively consistent with the center line positions of the mold cavities on the upper mold 108 and the center line positions of the lower mold 109.

[0029] Specifically, Figure 1 As shown, two columns 104 are arranged on the left and right sides between the upper workbench 103 and the lower workbench 115 respectively. The top of each column 104 is locked to the upper part of the upper workbench 103 by a column lock nut 102. An upper oil cylinder 101 is also installed on the upper workbench 103. The bottom end of the upper oil cylinder 101 is connected to a slider 105. The slider 105 is located below the upper workbench 103, and the slider 105 is slidably connected to the column 104. A demagnetization device is installed at the lower end of the slider 105, and an upper mold 108 is installed at the lower end of the demagnetization device. The upper oil cylinder 101 is used to drive the slider 105 and the upper mold 108 to reciprocate up and down.

[0030] In this embodiment, the demagnetization device includes a coil core 106 and a coil 107. The upper end of the coil core 106 is connected to the slider 105, and the lower end of the coil core 106 is connected to the upper mold 108. The coil 107 surrounds the coil core 106. The center line of the two columns 104 is also consistent with the center line position of the demagnetization device.

[0031] Correspondingly, in this embodiment, a lower die side frame 111 is provided on the lower workbench 115, a lower die 109 is provided on the lower die side frame 111, and a lower punch fixing plate 112 is provided correspondingly below the lower die 109, and a lower punch 110 corresponding to the die cavity of the upper die 108 is provided on the lower punch fixing plate 112, and the lower end of the lower punch fixing plate 112 is connected to the lower workbench 115 through a lower die guide column 113, and a lower oil cylinder 114 connected to the lower punch fixing plate 112 is also provided at the bottom of the lower workbench 115 to drive the lower punch fixing plate 112 and the lower punch 110 to reciprocate up and down, so as to realize molding when the mold is closed.

[0032] like Figure 2 As shown, the feeding assembly in this embodiment includes an injection stirring barrel 116 and an injection cylinder 117. The injection stirring barrel 116 is provided with an agitator. The end of the injection cylinder 117 is also provided with a slurry filter 119, which is connected to the injection position through a sealing valve 118 to feed the stirred and filtered slurry into the mold for hydraulic molding.

[0033] It should be noted that, unlike the molding hydraulic press with four columns around the workbench commonly used in the industry, the present embodiment adjusts the entire hydraulic press structure, adopts only two columns 104 on both sides, and keeps the center line of the two columns 104 consistent with the center line position of the mold cavity on the upper mold 108, the center line position of the lower mold 109, and the center line position of the charging and demagnetizing device. The upper workbench 103 and the lower workbench 115, the upper mold 108 and the lower mold 109 are adjusted to be long strips, especially the upper mold 108 is only provided with a single row or double row of mold cavities, and the row direction is extended along the center line direction of the two columns 104. In the case of a single row of mold cavities, the center line of the multiple mold cavities in a single row corresponds to the center line position of the two columns 104; in the case of a double row of mold cavities, the center line between the two rows corresponds to the center line position of the two columns 104. The width of the single-sided column 104 is smaller than the widths of the upper mold 108 and the lower mold 109 , and the column 104 is a cylindrical column.

[0034] The front and rear widths of the mold after adjustment in this embodiment are only one-fourth of those of the traditional mold. There is no need to use large-scale high-precision machine tools for mold processing, and the mold cavities are greatly reduced. The molding consistency and molding qualification rate of the products are greatly improved. Since the weight of the mold is greatly reduced, there is no need to use a forklift to replace the mold, which saves time, labor and production space. The traditional large-scale magnetic material molding hydraulic press is replaced by the small strip molding hydraulic press of this embodiment, and the equipment manufacturing cost is greatly reduced, and its flexibility of use is greatly increased. Since the strip hydraulic press has a small number of mold molding cavities, its product adjustment and production variety replacement are particularly flexible and fast to meet the ever-changing market needs for various varieties, and can reduce the waste of raw materials when changing molds, while also saving labor and mold manufacturing costs.

[0035] This embodiment can significantly improve the molding accuracy and dimensional consistency of the product by adjusting the number of columns 104 and the corresponding work surface shape to reduce the number of rows of mold cavities, solving the problems of large mold surface, high manufacturing cost, and difficulty in ensuring the size of multiple cavities in traditional four-column hydraulic presses, while facilitating mold replacement and daily maintenance. The design of the left and right columns 104 is adopted, and their special position matching is strictly limited. The coil magnetization circuit of the hydraulic press just makes the center line of the mold flush with the center line of the column 104, and the magnetization performance is optimized, overcoming the problem of the traditional four-column structure where the center of the mold is located in the gap between the two columns on both sides, which affects the magnetization performance. The traditional hydraulic press structure has been subversively reformed to create a new prospect for the intelligent production of magnetic materials with higher product molding performance and dimensional accuracy, more flexible production adaptability, and higher cost performance.

[0036] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. Bottom-top and floating magnetic material wet forming strip hydraulic press, characterized by: The invention comprises an upper workbench (103) and a lower workbench (115) which are arranged in a coordinated manner from top to bottom. The upper workbench (103) and the lower workbench (115) are connected at both sides by two columns (104). An upper mold (108) is arranged below the upper workbench (103). A lower mold (109) is arranged above the lower workbench (115). The center lines of the two columns (104) are respectively consistent with the center line positions of the mold cavities on the upper mold (108) and the center lines of the lower mold (109). The width of the column (104) on one side is smaller than the width of the upper die (108) and the lower die (109); a slider (105) is provided below the upper workbench (103); the slider (105) is slidably connected to the column (104); a charging and demagnetizing device is installed at the lower end of the slider (105); the upper die (108) is installed at the lower end of the charging and demagnetizing device; the center line of the two columns (104) is also consistent with the center line of the charging and demagnetizing device; The upper mold (108) is provided with only a single row or a double row of mold cavities, which are arranged in a row extending in the direction of the center line connecting the two upright posts (104). In the case of a single row of mold cavities, the center line connecting the multiple mold cavities in the single row corresponds to the center line connecting the two upright posts (104); in the case of a double row of mold cavities, the center line between the two rows corresponds to the center line connecting the two upright posts (104).

2. The bottom-top and floating magnetic material wet forming strip hydraulic press according to claim 1, characterized in that: The demagnetization device comprises a wire wrapped core (106) and a wire wrap (107); the upper end of the wire wrapped core (106) is connected to a slider (105); the lower end of the wire wrapped core (106) is connected to an upper mold (108); and the wire wrap (107) surrounds the wire wrapped core (106).

3. The bottom-top and floating magnetic material wet forming strip hydraulic press according to claim 1, characterized in that: The column (104) is a cylindrical column.

4. The bottom-top and floating magnetic material wet forming strip hydraulic press according to claim 1, characterized in that: A lower die side frame (111) is arranged on the lower workbench (115), a lower die (109) is arranged on the lower die side frame (111), and a lower punch fixing plate (112) is arranged correspondingly below the lower die (109), a lower punch (110) correspondingly matched with the die cavity of the upper die (108) is arranged on the lower punch fixing plate (112), and the lower end of the lower punch fixing plate (112) is connected to the lower workbench (115) through a lower die guide column (113).

5. The bottom-top and floating magnetic material wet forming strip hydraulic press according to any one of claims 1 to 4, characterized in that: It also includes a material supply assembly, which includes an injection stirring barrel (116) and an injection cylinder (117). An agitator is also provided in the injection stirring barrel (116), and a slurry filter (119) is also provided at the end of the injection cylinder (117); and is connected to the injection position via a sealing valve (118).

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