Multi-wire cutting device for magnetic materials

Abstract

The utility model belongs to the technical field of cutting, and particularly relates to a magnetic material multi-wire cutting device which comprises a box body. An open type working cavity for operation is arranged in the box body; a cutting assembly is arranged in the working cavity, a working table is arranged below the cutting assembly, a cooling plate is arranged on the working table, a frozen and fixed magnetic blank is placed on the cooling plate, and a liquid dropping assembly is arranged above the working table. A material plate is further arranged between the cooling plate and the frozen and fixed magnetic material blank, and the magnetic material blank can be fixed to the material plate in a frozen mode. Before cutting, the magnetic material blank is frozen at low temperature, low-temperature pure water and low-temperature oil are dropped on the magnetic material blank in the cutting process through the liquid dropping assembly so that the magnetic material blank can be kept in a frozen and fixed state, the cut magnetic material blank cannot be scattered at the moment, the cutting precision cannot be affected, the reject ratio and the loss rate are reduced, and the cutting efficiency is improved. And meanwhile, the cut magnetic material blank only needs to be taken out and placed at the normal temperature, so that dispersed workpieces can be obtained, and economy and environment friendliness are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of cutting technology, and in particular relates to a multi-wire cutting device for magnetic materials. Background Technology

[0002] In the field of magnetic material cutting, the requirements for cutting operations are becoming increasingly stringent because blank cutting has a significant impact on subsequent processes. Currently, multi-wire cutting technology is widely used in the cutting production of semiconductor products due to its high production efficiency and high precision. In existing cutting processes, magnetic blanks are typically fixed by applying adhesive, which is then removed later.

[0003] For example, Chinese invention patent CN115319927A discloses a wire EDM processing method, belonging to the field of wire EDM technology. The method includes the following steps: S100, freezing multiple blanks together with ice formed by freezing in water; S200, fixing the blanks frozen together in step S100 onto the worktable of a multi-wire EDM machine; S300, cutting the blanks from step S200 with the multi-wire EDM machine to obtain a workpiece. Using water instead of hot melt adhesives or other binders used in existing technologies allows the blanks to be frozen together, which helps to reasonably reduce auxiliary material costs in production. After cutting, the ice melts to obtain a single workpiece, eliminating the need for hot water soaking or acid pickling to remove the adhesive, effectively avoiding cracks and damage to the workpiece during hot water soaking or acid pickling, and thus improving the workpiece qualification rate. Since no de-adhesion treatment is required after cutting, production efficiency is improved.

[0004] The above-mentioned cutting method uses freezing, but it generates heat during the cutting process, which causes the workpiece to scatter, affecting the cutting accuracy and resulting in excessively high defect and loss rates. We urgently need to find a multi-wire cutting device for magnetic materials to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-wire cutting device for magnetic materials, which aims to solve the technical problems in the existing technology where heat is generated during the cutting process, causing the workpiece to scatter during the cutting process, affecting the cutting accuracy, and resulting in excessively high defect rate and loss rate.

[0006] To achieve the above objectives, this utility model provides a multi-wire cutting device for magnetic materials, comprising a housing; an open working chamber for operation is provided inside the housing; a cutting assembly is provided inside the working chamber, a worktable is provided below the cutting assembly, a cooling plate is provided on the worktable, a frozen and fixed magnetic material blank is placed on the cooling plate, and a dripping assembly is provided above the worktable, which can drip low-temperature pure water and low-temperature oil onto the magnetic material blank during cutting to keep the magnetic material blank in a frozen and fixed state.

[0007] Optionally, a material plate is provided between the cooling plate and the frozen magnetic blank, and the magnetic blank can be frozen and fixed on the material plate and moved together with the material plate.

[0008] Optionally, the dripping assembly includes a connecting frame and several cold oil pipes and several cold water pipes connected to the connecting frame. The several cold oil pipes are connected to an external cold oil tank through conduits, and the several cold water pipes are connected to an external water tank through the conduits.

[0009] Optionally, the connecting frame includes two connecting parts, and each of the cold oil pipes and each of the cold water pipes passes through the two connecting parts for connection.

[0010] Optionally, each of the cold water pipes and each of the cold oil pipes is provided with a plurality of arranged openings, through which low-temperature pure water and low-temperature oil drip onto the magnetic blank.

[0011] Optionally, the cooling plate includes a cooling cavity; coolant circulates in the cooling cavity, and the cooling plate is provided with an inlet and an outlet communicating with the cooling cavity.

[0012] Optionally, the temperature of the cooling plate is between -20°C and -30°C.

[0013] Optionally, the temperature of the low-temperature pure water is between 1°C and 5°C, and the temperature of the low-temperature oil is between -5°C and -30°C.

[0014] Optionally, the cutting assembly includes three rotating rollers arranged in a triangle on the housing and a cutting line wound around the three rotating rollers; the cutting assembly can cut the magnetic blank on the worktable.

[0015] Optionally, the bottom of the open working chamber is provided with a heat insulation board, which is used to keep the working chamber warm.

[0016] Compared with the prior art, the above-mentioned one or more technical solutions in the magnetic material multi-wire cutting device provided by the present invention have at least one of the following technical effects:

[0017] Before cutting, the magnetic blank is first frozen at low temperature. By setting up a dripping component, low-temperature pure water and low-temperature oil are dripped onto the magnetic blank during the cutting process to keep the magnetic blank in a frozen and fixed state. At this time, the magnetic blank will not scatter after cutting, so it will not affect the cutting accuracy and reduce the defect rate and loss rate. At the same time, after cutting, the magnetic blank only needs to be taken out and placed at room temperature to obtain dispersed workpieces, which is economical and environmentally friendly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial structural diagram of the present utility model.

[0021] Figure 3 This is a partial structural diagram of the present utility model.

[0022] The following are the labeling elements in the figure:

[0023] 100. Housing; 110. Working chamber; 120. Worktable; 130. Cooling plate; 131. Liquid inlet; 132. Liquid outlet; 140. Material plate; 150. Insulation plate; 160. Liquid collection device;

[0024] 200. Cutting assembly; 210. Rotating roller; 220. Cutting line;

[0025] 300. Magnetic blank;

[0026] 400. Droplet assembly; 410. Connecting part; 420. Cold oil pipe; 430. Cold water pipe; 440. Conduit; 450. Cold oil tank. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0031] In one embodiment of this utility model, according to Figure 1-3 As shown, the device includes a housing 100; the housing 100 has an open working chamber 110 for operation; a cutting assembly 200 is installed in the working chamber 110, a worktable 120 is installed below the cutting assembly 200, a cooling plate 130 is installed on the worktable 120, and a frozen magnetic blank 300 is placed on the cooling plate 130. A dripping assembly 400 is installed above the worktable 120, which drips low-temperature pure water and low-temperature oil onto the magnetic blank 300 during cutting to keep the magnetic blank 300 frozen and fixed. A material plate 140 is also provided between the cooling plate 130 and the frozen magnetic blank 300, and the magnetic blank 300 can be frozen and fixed on the material plate 140 and moved together with the material plate 140.

[0032] Specifically, before cutting, the magnetic blank 300 is first frozen at low temperature. By setting the dripping component 400 to drip low temperature pure water and low temperature oil onto the magnetic blank 300 during the cutting process, the magnetic blank 300 is kept frozen and fixed. At this time, the magnetic blank 300 will not scatter after cutting, so it will not affect the cutting accuracy and reduce the defect rate and loss rate. At the same time, the magnetic blank 300 after cutting only needs to be taken out and placed at room temperature to obtain dispersed workpieces, which is economical and environmentally friendly.

[0033] Furthermore, the multi-wire cutting device also includes a drive unit that drives the cutting assembly 200 to operate.

[0034] In another embodiment of this utility model, according to Figure 2 and 3 As shown, the dripping assembly 400 includes a connecting frame and several cold oil pipes 420 and several cold water pipes 430 connected to the connecting frame. The cold oil pipes 420 and cold water pipes 430 are arranged alternately. The cold oil pipes 420 are connected to an external cold oil tank 450 through conduits 440, and the cold water pipes 430 are connected to an external water tank through conduits 440. The connecting frame includes two connecting parts 410, and each cold oil pipe 420 and each cold water pipe 430 passes through the two connecting parts 410 for connection. Each cold water pipe 430 and each cold oil pipe 420 is provided with multiple arranged openings, through which low-temperature pure water and low-temperature oil drip onto the magnetic material blank 300.

[0035] Specifically, the dripping assembly 400 also includes a bracket connected to the housing 100. The bracket allows the dripping assembly 400 to be suspended above the workbench 120. Several cold oil pipes 420 and several cold water pipes 430 are arranged in an alternating pattern, which allows the dripping low-temperature pure water and low-temperature oil to mix together, so that the overall temperature of the magnetic blank 300 does not reach the melting point when it is cut, and it remains frozen and fixed.

[0036] Understandably, the length of a row of openings should correspond to the length of the platform and should not be too short, otherwise it will be impossible to completely drip low-temperature pure water and low-temperature oil onto every part of the magnetic blank.

[0037] In another embodiment of this utility model, according to Figure 1-3 As shown, the cooling plate 130 includes a cooling cavity; coolant circulates in the cooling cavity, and the cooling plate 130 is provided with an inlet 131 and an outlet 132 that communicate with the cooling cavity.

[0038] Specifically, the coolant enters from the inlet 131 and exits from the outlet 132, so that the temperature inside the cooling chamber can be kept low, thereby preventing the magnetic blank from melting.

[0039] In another embodiment of this utility model, according to Figure 1-3As shown, the temperature of cooling plate 130 is between -20℃ and -30℃. The temperature of low-temperature pure water is between 1℃ and 5℃, and the temperature of low-temperature oil is between -5℃ and -30℃.

[0040] Specifically, the cooling plate 130 and the low-temperature oil are designed to operate at a temperature of -20 degrees Celsius. At this temperature, the economic cost is acceptable. At the same time, the freezing effect ensures that the magnetic blank will not melt during cutting, thus maintaining cutting accuracy and reducing the problems of high defect rate and high loss rate.

[0041] In another embodiment of this utility model, according to Figure 1 and 2 As shown, the cutting assembly 200 includes three rotating rollers 210 arranged in a triangular pattern on the housing 100 and cutting lines 220 wound around the three rotating rollers 210; the cutting assembly 200 can cut the magnetic blank 300 on the worktable 120. Specifically, a lifting assembly is provided at the bottom of the worktable 120, which can raise or lower the height of the worktable 120, and the cutting conditions can be met by adjusting the height.

[0042] In another embodiment of this utility model, according to Figure 1 and 2 As shown, the bottom of the open working chamber 110 is provided with a heat insulation plate 150, which is used to insulate the working chamber 110. Specifically, the heat insulation plate 150 is used to slow down the rapid dissipation of cold air in the working chamber 110, which can reduce the temperature of the cooling plate 130 and the low-temperature oil, and reduce energy consumption.

[0043] Furthermore, a liquid collection device 160 is provided at the bottom of the working chamber 110, through which dripping low-temperature pure water and low-temperature oil are collected.

[0044] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art, the architectural form of this utility model can be flexibly varied without departing from its concept, and a series of products can be derived. Any simple deductions or substitutions should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A multi-wire saw for magnetic material, characterized in that, The application relates to a cutting device for magnetic material, which comprises a box body; an open work cavity is arranged in the box body for operation; a cutting assembly is arranged in the work cavity; a workbench is arranged below the cutting assembly; a cooling plate is arranged on the workbench; a frozen and fixed magnetic material blank is arranged on the cooling plate; a drop assembly is arranged above the workbench; the drop assembly can drop low-temperature pure water and low-temperature oil on the magnetic material blank during cutting, so that the magnetic material blank is kept in a frozen and fixed state.

2. The magnetic material multi-wire saw apparatus according to claim 1, wherein A material plate is further arranged between the cooling plate and the frozen and fixed magnetic material blank; the magnetic material blank can be frozen and fixed on the material plate and moves together with the material plate.

3. The magnetic material multi-wire saw apparatus according to claim 1, wherein The drop assembly comprises a connecting frame and a plurality of cold oil pipes and cold water pipes connected with the connecting frame; the cold oil pipes are connected with an external cold oil tank through a pipeline; the cold water pipes are connected with an external water tank through the pipeline.

4. The magnetic material multi-wire saw apparatus according to claim 3, wherein The connecting frame comprises two connecting portions; each cold oil pipe and each cold water pipe is arranged on the two connecting portions and connected therewith.

5. The magnetic material multi-wire saw apparatus according to claim 3, wherein A plurality of arranged holes are arranged on each cold water pipe and each cold oil pipe; low-temperature pure water and low-temperature oil are dropped on the magnetic material blank through the holes.

6. The magnetic material multi-wire saw apparatus of claim 1, wherein, The cooling plate comprises a cooling cavity; cooling liquid is circulated in the cooling cavity; an inlet and an outlet are arranged on the cooling plate and communicated with the cooling cavity.

7. The magnetic material multi-wire saw apparatus according to claim 6, wherein The temperature of the cooling plate is -20 DEG C to -30 DEG C.

8. The magnetic material multi-wire saw apparatus of claim 5, wherein, The temperature of the low-temperature pure water is 1 DEG C to 5 DEG C; the temperature of the low-temperature oil is -5 DEG C to -30 DEG C.

9. The magnetic material multi-wire saw apparatus of claim 1, wherein, The cutting assembly comprises three rotating rollers arranged in a triangular shape on the box body and a cutting wire wound on the three rotating rollers; the cutting assembly can cut the magnetic material blank on the workbench.

10. The magnetic material multi-wire saw apparatus according to any one of claims 1 to 9, wherein A heat preservation plate is arranged at the bottom of the open work cavity; the heat preservation plate is used for heat preservation of the work cavity.

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