Radiator mold working belt, working belt processing method and radiator mold

Abstract

The present invention provides a radiator mold working belt, a working belt processing method and a radiator mold, wherein the working belt 1 comprises a base 100 and a plurality of tooth pieces 200 evenly distributed on the base 100, and the cross-sectional shape of the first surface 101 of the base 100 is an arc. The present invention optimizes the structural design of the mold working belt and improves the mold processing quality to reduce the phenomenon of tooth deviation and tooth breakage caused by insufficient feeding or unbalanced force during extrusion, and reduces the probability of mold failure and scrapping.

Description

Technical Field

[0001] The invention relates to the field of aluminum extrusion production, and in particular to a radiator die working belt, a working belt processing method and a radiator die Background Art

[0002] In the aluminum extrusion industry, high-density tooth radiator molds are one of the typical representatives of high-difficulty molds. Due to the high teeth and small tooth gaps of high-density tooth radiators, it is very easy to produce deflected and broken teeth during extrusion, resulting in mold rot and scrapping. The average mold trial success rate of 60% to 70% is very low, which seriously restricts the extrusion yield and economic benefits. Summary of the invention

[0003] In view of the above problems, the present invention aims to solve the problems described above. One purpose of the present invention is to provide a radiator mold working belt, working belt processing method and radiator mold thereof that solve the above problems. In production, the main reasons for extrusion mold rot are mold empty knife processing deviation and unreasonable mold structure, insufficient feed and unbalanced force during extrusion, resulting in deviated teeth and broken teeth; the mold rot problem can be effectively improved by optimizing the structural design of the mold and improving the mold processing quality.

[0004] The working belt 1 includes a base 100 and a plurality of teeth 200 evenly distributed on the base 100 , and a cross-sectional shape of a first surface 101 of the base 100 is an arc.

[0005] The longitudinal section of the first surface 101 of the substrate 100 forms a predetermined angle α with the bottom surface 102 of the substrate 100 , wherein the predetermined angle α is 65° to 85°.

[0006] The ratio of the height of the longitudinal section of the substrate 100 to the width of the longitudinal section is 1.5 to 2.0.

[0007] Wherein, the width of any one of the plurality of tooth plates 200 is 0.8 to 1.0 times the thickness of the tooth plate.

[0008] The processing method of the working belt of the radiator mold is characterized in that the working belt processing method includes performing electrospark rough machining and electrospark fine machining on the working belt 1, and the electrospark rough machining includes empty tool correction, specifically including: the tooth tip 300 has an empty tool pre-height of 2.5 to 4.0 mm, the inner side 301 between the teeth has an empty tool pre-width of 0.5 to 0.7 mm, the outer side 302 of the tooth has an empty tool pre-width of 1.0 to 2.0 mm, and the tooth root 303 has an empty tool depth of 1.0 to 2.0 mm.

[0009] Among them, during the EDM rough machining, every time the length of the working belt is machined by 0.3 mm, it is detected and determined whether the tooth spacing is equal to the predetermined tooth spacing. If the tooth spacing is equal to the predetermined tooth spacing, the EDM rough machining of the working belt 1 continues; if the tooth spacing is greater than or less than the predetermined tooth spacing, the EDM electrode returns to the previous detection position to re-process the working belt 1.

[0010] Among them, when the electrospark rough machining is performed, every time the length of the working belt 1 is machined for 8.0 to 10.0 mm, it is detected and determined whether the idle tool spacing is equal to the reserved idle tool spacing. If the idle tool spacing is equal to the reserved idle tool spacing, the electrospark rough machining of the working belt 1 continues; if the idle tool spacing is greater than or less than the reserved idle tool spacing, the electrospark electrode returns to the previous detection position to re-process the working belt 1.

[0011] Wherein, the current of the rough EDM machining is 13.0-18.0A, and the current of the fine EDM machining is 10.0-13.0A.

[0012] A heat sink mold comprises a working belt 1, a guide plate 2 and a mold surface 3, wherein the working belt 1 is arranged between the guide plate 2 and the mold surface 3, the first surface 101 of the base 100 adjacent to the guide plate 2 has a curved cross-section, and the longitudinal section of the first surface 101 forms a predetermined angle α with the bottom surface 102 of the base 100, wherein the predetermined angle α is 65° to 85°.

[0013] In summary, the radiator mold working belt, working belt processing method and radiator mold of the present invention can solve the deficiencies of the prior art and have the following beneficial effects:

[0014] First, when the mold of the present invention is working with extrusion, its force is balanced, the discharge speed of each part is the same, and the material can be fed evenly, reducing the phenomenon of tooth deviation and tooth breakage caused by insufficient feeding and unbalanced force during extrusion, and reducing the probability of mold rot and scrapping.

[0015] Second, the preparation process of the radiator mold of the present invention has a high success rate in mold trial, which overcomes many technical difficulties in the design and manufacturing of high-density tooth radiator aluminum profiles, develops and produces a variety of high-density tooth aluminum extrusion molds, and achieves good economic and social benefits.

[0016] Thirdly, the heat sink mold provided by the present invention has good product density, good appearance quality and beautiful product.

[0017] Other characteristic features and advantages of the present invention will become apparent from the following description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. For those of ordinary skill in the art, other drawings can be obtained from these drawings without paying creative work.

[0019] Figure 1 The structural diagram of the working belt of the radiator mold of the present invention is shown;

[0020] Figure 2 The structural diagram of the working belt substrate of the present invention is shown;

[0021] Figure 3 The figure shows the structure diagram of the heat sink mold of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0023] The basic idea of ​​the present invention is that in production, the main reasons for extrusion mold rot are mold empty knife processing deviation and unreasonable mold working belt structure, which cause insufficient material supply and unbalanced force during extrusion, resulting in deviated teeth and broken teeth; the present application can effectively improve the mold rot problem by optimizing the structural design of the mold and improving the mold processing quality.

[0024] The following is a detailed description of the radiator mold working belt, working belt processing method and radiator mold in conjunction with the accompanying drawings. Since the tooth part has a thin wall thickness, it is the most difficult part of the entire profile to discharge, and is the basis for designing the entire profile working belt.

[0025] like Figure 1 and Figure 2The working belt of the heat sink mold shown may include a base 100 and a plurality of tooth pieces 200 evenly distributed on the base 100, and the cross-sectional shape of the first surface 101 of the base 100 is an arc. Since the teeth on both sides are far from the pressure center and the metal flow rate is slow, in order to achieve the effect that the teeth on both sides discharge faster than the middle teeth, so that the extrusion head presents a reasonable state of slightly faster bottom and slightly faster teeth on both sides than the middle teeth, the width of the working belt at this part should be shortened. Therefore, the first surface 101 of the base 100 is set to an arc surface. At the same time, such a design makes the side tooth part and the middle tooth part smoothly connected and have good flatness. When the mold is extruded, the force is balanced, the discharge speed of each part is the same, and the material can be fed evenly, reducing the phenomenon of tooth deviation and broken teeth caused by insufficient feeding and unbalanced force during extrusion.

[0026] Furthermore, the longitudinal section of the first surface 101 of the substrate 100 forms a predetermined angle α with the bottom surface 102 of the substrate 100, wherein the predetermined angle α is 65° to 85°, for example, α can be: 65°, 70°, 75°, 80°, 85°. This design allows the slurry to climb evenly along the slope, and each part of the substrate 100 is equally compressed, thereby avoiding the occurrence of tooth deviation and tooth breakage.

[0027] Specifically, the ratio of the height of the longitudinal section of the base 100 to the width of the longitudinal section is 1.5 to 2.0.

[0028] The height of the longitudinal section of the substrate 100 is 12.9 mm, and the width of the longitudinal section is about 23.5 to 26 mm.

[0029] In order to gradually slow down the slurry flow rate of the tooth portion from bottom to top, the width of any tooth piece in the plurality of tooth pieces 200 is 0.8 to 1.0 times the thickness. The height of any tooth piece ranges from 100 to 150 mm or more, and the thickness of any tooth piece ranges from 1.2 to 6 mm or more.

[0030] Embodiment 1: The working belt 1 includes a base 100 and a plurality of teeth 200 evenly distributed on the base 100, and the cross-sectional shape of the first surface 101 of the base 100 is arc-shaped, the ratio of the height of the longitudinal section of the base 100 to the width of the longitudinal section can be 1.5, and the width of any one of the plurality of teeth 200 is 0.8 times the thickness.

[0031] Embodiment 2: The working belt 1 includes a base 100 and a plurality of teeth 200 evenly distributed on the base 100, and the cross-sectional shape of the first surface 101 of the base 100 is arc-shaped, the longitudinal section of the first surface 101 of the base 100 forms a predetermined angle α of 65° with the bottom surface 102 of the base 100, the ratio of the height of the longitudinal section of the base 100 to the width of the longitudinal section can be 2.0, and the width of any one of the plurality of teeth 200 is 1.0 times the thickness.

[0032] Embodiment 3: The working belt 1 includes a base body 100 and a plurality of teeth 200 evenly distributed on the base body 100, and the cross-sectional shape of the first surface 101 of the base body 100 is arc-shaped, and the longitudinal section of the first surface 101 of the base body 100 forms a predetermined angle α of 85° with the bottom surface 102 of the base body 100, and the ratio of the height of the longitudinal section of the base body 100 to the width of the longitudinal section can be 1.8, and the width of any one of the plurality of teeth 200 is 0.9 times the thickness.

[0033] A method for processing a working zone of a radiator mould.

[0034] In order to improve the machining accuracy and reduce the error, the machining method includes EDM rough machining and EDM finishing of the working belt. EDM rough machining includes empty tool correction. Since the material flow rate at the tooth tip is slow, and it is found from a large number of mold production processes that most of them are tilted upward when discharging, the empty tool at the tooth tip 300 is small and the mold will be blocked. Therefore, the empty tool at the tooth tip is pre-heightened by 2.5-4.0mm. The inner side 301 between teeth is generally small. In order to ensure the mold between teeth In order to maximize the strength of steel, the empty cutter between teeth is minimized as much as possible, so the empty cutter pre-width of the inner side 301 between teeth is reserved with a margin of 0.5-0.7mm. The outer side 302 of the tooth is similar to the tooth tip, and the empty cutter size is increased as much as possible, so the empty cutter pre-width of the outer side 302 of the tooth is reserved with a margin of 1.0-2.0mm. The working belt 1 at the bottom of the tooth is long and can withstand greater force. The empty cutter should be designed to be slightly larger to ensure that the surface of the profile is not scratched and the appearance quality of the profile is affected. Therefore, the empty cutter depth at the tooth root 303 is reserved with a margin of 1.0-2.0mm.

[0035] During rough EDM machining, every time 0.3 mm of the working band 1 is machined, it is possible to detect and determine whether the tooth spacing is equal to the predetermined tooth spacing. If the tooth spacing is equal to the predetermined tooth spacing, the rough EDM machining of the working band 1 continues; if the tooth spacing is greater than or less than the predetermined tooth spacing, the EDM electrode returns to the last detection position to re-machine the working band 1.

[0036] In order to improve the processing accuracy, during EDM rough processing, every time the length of the working band 1 is processed by 8.0 to 10.0 mm, it can be detected and determined whether the idle tool spacing is equal to the reserved idle tool spacing. If the idle tool spacing is equal to the reserved idle tool spacing, the EDM rough processing of the working band 1 continues; if the idle tool spacing is greater than or less than the reserved idle tool spacing, the EDM electrode returns to the previous detection position to reprocess the working band 1.

[0037] The current for EDM rough machining is 13.0~18.0A, and the current for EDM finishing is 10.0~13.0A.

[0038] For example, the current for rough machining is 13.0A, 14.0A, 16.0A, 18.0A, and the current for EDM finishing is 10.0A, 11.0A, 12.0A, 13.0A. Using a small current can obtain a good surface finish. Since the processing speed is slow with a small current, the working zone 1 can be pre-milled when the high-density tooth mold is roughed, which can also improve the processing efficiency.

[0039] Embodiment 4: Empty tool correction: The empty tool pre-height of the tooth tip 300 is 2.5mm, the empty tool pre-width of the inner side 301 between the teeth is 0.5mm, the empty tool pre-width of the outer side 302 of the tooth is 1.0mm, and the empty tool depth of the tooth root 303 is 1.0mm. The current of EDM rough machining is 13.0A, and the current of EDM finishing is 10.0A.

[0040] Embodiment 5: Empty tool correction: The empty tool pre-height of the tooth tip 300 is 4.0mm, the empty tool pre-width of the inner side 301 between the teeth is 0.7mm, the empty tool pre-width of the outer side 302 of the tooth is 2.0mm, and the empty tool depth of the tooth root 303 is 2.0mm. The current of EDM rough machining is 18.0A, and the current of EDM finishing is 13.0A.

[0041] A heat sink mold, such as Figure 3 As shown, it includes a working belt 1, a guide plate 2 and a mold surface 3, the working belt 1 is arranged between the guide plate 2 and the mold surface 3, the cross-sectional shape of the first surface 101 of the base 100 adjacent to the guide plate 2 is an arc surface, and the longitudinal section of the first surface 101 forms a predetermined angle α with the bottom surface 102 of the base 100, wherein the predetermined angle α is 65° to 85°.

[0042] The present invention proposes a working belt of a radiator mold, a working belt processing method and a radiator mold thereof, which optimizes the structure of the working belt and the empty knife, ensures the processing quality of the electric spark process, reduces the deviation and broken teeth caused by insufficient feeding and unbalanced force during extrusion, and improves the trial mold success rate of the radiator mold, thereby achieving a trial mold success rate of more than 90% and increasing its scope of use.

[0043] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0045] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention. The present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A radiator mold working belt, characterized in that: The working belt (1) comprises a base (100) and a plurality of teeth (200) evenly distributed on the base (100), and the cross-sectional shape of the first surface (101) of the base (100) is an arc; The first surface (101) is an adjacent surface of the base (100) connected to the surface of the tooth plate (200), and the first surface (101) is arranged along the length direction of the base (100); A longitudinal section of the first surface (101) of the substrate (100) forms a predetermined angle α with a bottom surface (102) of the substrate (100), wherein the predetermined angle α is 65° to 85°; The working belt processing method comprises performing rough electrospark machining and fine electrospark machining on the working belt (1), wherein the rough electrospark machining comprises idle tool correction, specifically comprising: leaving a 2.5-4.0 mm margin for idle tool pre-height of the tooth tip (300), leaving a 0.5-0.7 mm margin for idle tool pre-width of the inner side (301) between teeth, leaving a 1.0-2.0 mm margin for idle tool pre-width of the outer side (302) of the teeth, and leaving a 1.0-2.0 mm margin for idle tool depth of the tooth root (303).

2. The radiator mold working belt as claimed in claim 1, characterized in that: The ratio of the height of the longitudinal section of the base (100) to the width of the longitudinal section is 1.5 to 2.

0.

3. The radiator mold working belt as claimed in claim 1, characterized in that: The width of any one of the plurality of tooth plates (200) is 0.8 to 1.0 times the thickness of the tooth plate.

4. The heat sink mold working belt as claimed in claim 1, characterized in that: During the rough electrospark machining, every time the length of the working band is machined by 0.3 mm, it is detected and determined whether the tooth-piece spacing is equal to the predetermined tooth-piece spacing; if the tooth-piece spacing is equal to the predetermined tooth-piece spacing, the rough electrospark machining of the working band (1) is continued; If the tooth-slice spacing is greater than or less than the predetermined tooth-slice spacing, the electric spark electrode returns to the last detection position to reprocess the working belt (1).

5. The radiator mold working belt as claimed in claim 1, characterized in that: During the rough electrospark machining, every time the length of the working band (1) is machined for 8.0 to 10.0 mm, it is detected and judged whether the idle tool spacing is equal to the reserved idle tool spacing. If the idle tool spacing is equal to the reserved idle tool spacing, the rough electrospark machining of the working band (1) continues; if the idle tool spacing is greater than or less than the reserved idle tool spacing, the electrospark electrode returns to the last detection position to re-machine the working band (1).

6. The heat sink mold working belt as claimed in claim 1, characterized in that: The current of the rough EDM machining is 13.0-18.0A, and the current of the fine EDM machining is 10.0-13.0A.

7. A heat sink mold, characterized in that: It comprises a working belt (1), a guide plate (2) and a mold surface (3) as described in any one of claims 1 to 3, wherein the working belt (1) is arranged between the guide plate (2) and the mold surface (3), and the cross-sectional shape of the first surface (101) of the base (100) adjacent to the guide plate (2) is an arc surface.

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