Synchronous forming die for adjacent sides of circular arc

Abstract

The utility model discloses an arc adjacent side synchronous forming die which comprises a female die and a male die which are matched with each other, the female die is provided with a bevel-rule-angle-shaped female die platform, the male die is provided with a male die concave arc side matched with the female die platform, and the female die is provided with female die side plates located at the two ends of the female die platform. The male die is provided with a material pressing plate which is located between the female die and the male die and floats elastically, the material pressing plate is in a bevel-rule angle shape matched with the shape of the female die platform, the two ends of the material pressing plate are opposite to the female die side plates, and gaps capable of containing the folded edges are formed between the material pressing plate and the female die side plates. The arc adjacent side synchronous forming die is high in forming efficiency and accurate in positioning.

Description

Technical Field

[0001] The utility model relates to a water tank arc corner edge forming die technology, in particular to an arc adjacent edge synchronous forming die. Background Art

[0002] The sink material is usually cut into a cross-shaped sheet with the bottom and four sides connected, and then the four ends are folded to form the sink plane flange, and then the curved corner of the sink is formed, and then the four sides are folded to form the prototype of the sink, and finally welded to form. When the curved corner of the sink is formed, the arc edge of a single corner is spliced ​​in half at the middle of the fillet, so that the depth of the single-sided arc bend is shallow and easier to form, but the four fillets need to be bent eight times, which takes more time to process, resulting in low forming efficiency of the bending mold, and the sheet is only limited on one side, and there is usually a problem of insufficient pressing and easy displacement during the processing.

[0003] Chinese utility model patent 201821641027.9 discloses a sheet metal arc bending die, which discloses a die for forming rounded corners. However, there are problems such as insufficient limiting and movement due to insufficient pressing, and only half of a rounded corner can be processed at a time, resulting in low processing efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a circular arc adjacent edge synchronous forming die with high forming efficiency and accurate positioning.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a synchronous forming mold for adjacent edges of an arc, which includes a concave mold and a punch that match each other, the concave mold has a concave model table with an L-angle shape, the punch is provided with a convex mold concave arc edge that matches the concave model table, the concave mold is provided with concave mold side plates located at both ends of the concave model table, the punch is installed with a pressure plate that is located between the concave mold and the punch and elastically floats, the pressure plate is in a L-angle shape that matches the shape of the concave model table and its two ends are opposite to the concave mold side plates, and there is a gap between the pressure plate and the concave mold side plates that can accommodate the folded edges.

[0006] As an improvement to the technical solution of the arc adjacent edge synchronous forming mold of the utility model, the pressing plate is higher than the concave arc edge of the punch when it floats naturally, and is flush with the lowest position of the concave arc edge of the punch when the pressing plate is pressed down to the lowest position.

[0007] As an improvement to the technical solution of the arc adjacent edge synchronous forming mold of the utility model, the inner edge of the concave mold platform has a concave mold convex arc edge that matches the concave arc edge of the convex mold.

[0008] As an improvement to the technical solution of the arc adjacent edge synchronous forming mold of the utility model, the die side plate is perpendicular to the end of the die table, and the inner side surfaces of the two die side plates are perpendicular to each other.

[0009] As an improvement on the technical solution of the arc adjacent edge synchronous forming mold of the utility model, the side plate of the concave mold extends rearward to form a floating platform beyond the concave model table, and the end of the pressing plate has a matching limit blocking part.

[0010] As an improvement to the technical solution of the arc adjacent edge synchronous forming die of the utility model, both ends of the pressing plate are provided with extension support plates which are perpendicular to the end of the pressing plate and extend outward.

[0011] As an improvement on the technical solution of the arc adjacent edge synchronous forming mold of the utility model, the die is fixedly mounted on the die pad, and the punch is fixedly mounted on the punch pad; the punch pad is provided with a guide column, which passes through the punch and the die and extends into the die pad.

[0012] As an improvement to the technical solution of the arc adjacent edge synchronous forming die of the utility model, an upper mounting block is provided on the top surface of the concave die pad, and a lower mounting block is provided on the bottom surface of the convex die pad.

[0013] The beneficial effects of the utility model are as follows: the L-shaped concave and convex mold structures of the arc adjacent edge synchronous forming mold place the sheet material with the formed horizontal folded edges on the pressing plate, and the two adjacent horizontal folded edges are buckled on the outer side of the end faces of the pressing plate, close to the two mutually perpendicular end faces of the pressing plate, forming a very accurate positioning effect. After the mold is closed, the folded edges are located in the gap between the pressing plate and the side plate of the concave mold, providing stable clamping and positioning during the forming process, and preventing the folded edges from being pulled without restraint and deforming. The L-shaped concave mold table and the concave arc edge of the convex mold cooperate with each other, and at the same time, the two adjacent half-side arc-shaped rounded edges of the sheet material are pressed and formed, and the arc surface forming of the two edges is realized synchronously, with high forming efficiency and reduced deformation, avoiding the secondary deformation caused by the first forming part being pulled in the later forming step at the corner position during the front and rear step forming, so that its forming size accuracy is high, the rounded arc surface is more smoothly connected after splicing and welding, and the forming process is also easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the sink sheet.

[0015] Figure 2 for Figure 1 Side structural diagram of .

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the sink after bending.

[0017] Figure 4It is a three-dimensional structural schematic diagram of a circular arc adjacent edge synchronous forming mold of the utility model.

[0018] Figure 5 for Figure 4 The three-dimensional structural schematic diagram of the concave mold part of the arc adjacent edge synchronous forming mold is shown.

[0019] Figure 6 for Figure 4 The three-dimensional structural schematic diagram of the male mold part of the arc adjacent edge synchronous forming mold is shown.

[0020] Figure 7 for Figure 4 The plan perspective structural diagram of the arc adjacent edge synchronous forming mold is shown.

[0021] Figure 8 for Figure 4 The longitudinal cross-sectional structure schematic diagram of the arc adjacent edge synchronous forming mold shown. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 8As shown, the utility model is a circular arc adjacent edge synchronous forming mold, which includes a matching die 11 and a punch 21, the die 11 has a concave model platform 12 with an L-angle shape, the punch is provided with a punch arc edge 22 adapted to the concave model platform 12, the die 11 is provided with a die side plate 13 located at both ends of the concave model platform 12, the punch 21 is installed with a pressure plate 23 located between the die 11 and the punch 21 and elastically floating, the pressure plate 23 is a L-angle shape adapted to the shape of the concave model platform 12 and the two ends are opposite to the die side plate 13, and there is a gap between the end of the pressure plate 23 and the die side plate 13 to accommodate the folded edge. The arc adjacent edge synchronous forming mold has a L-shaped die 11 and a punch 21 structure, and the sheet 31 with formed horizontal folded edges is placed on the pressure plate 23. The two adjacent horizontal folded edges are buckled on the outer side of the end faces of the pressure plate 23 at both ends, and are close to the two mutually perpendicular end faces of the pressure plate 23, forming a very accurate positioning effect. After the mold is closed, the folded edge 33 is located in the gap between the pressure plate 23 and the die side plate 13, and the L-shaped concave model table 12 cooperates with the punch concave arc edge 22 to simultaneously press and form the two adjacent half-side arc-shaped rounded edges 32 of the sheet 31, and the arc surface forming of the two edges is realized simultaneously, with high forming efficiency and reduced deformation, avoiding secondary deformation caused by the first forming part being pulled in the later forming step at the corner position during the front and rear step forming, so that its forming size accuracy is high, the rounded arc surface connection is smoother after splicing and welding, and the forming process is also easier. During the forming process, the pressing plate 23 is initially in an elastic floating state to support the sheet material. The die 11 is pressed down to move the die side plate 13 down to clamp the folded edge 33 of the sink sheet material. The die 11 continues to press down to squeeze the edge of the sheet material with the concave model table 12 and the matching convex arc edge 22 to form an arc-shaped rolled edge, forming two halves of the same arc-shaped fillet edge to be welded, obtaining a more stable dimensional accuracy and avoiding secondary deformation. The simultaneous positioning and constraint of both sides enhances the symmetry and constraint of the forming force. The sheet material is not easily displaced during the forming process, thereby ensuring the stability of the forming, and the forming consistency is better than the original single-side forming process.

[0024] Among them, the pressing plate 23 is higher than the concave arc edge 22 of the punch when it floats naturally, and is flush with the lowest position of the concave arc edge 22 of the punch when the pressing plate 23 is pressed down to the lowest position, so that the pressing plate 23 can support the sheet material in advance, clamp the sheet material 31 with the concave model table 12 of the die 11 and continue to press down, and cooperate with the corresponding forming parts to extrude the edge of the sheet material 31 to bend it into shape.

[0025] Furthermore, the inner edge of the concave mold platform 12 has a concave mold convex arc edge 18 that matches the convex mold concave arc edge 22. The concave mold convex arc edge 18 and the convex mold concave arc edge 22 cooperate with each other to extrude the two sides of the sheet material 31 to form it.

[0026] The die side plate 13 is perpendicular to the end of the die platform 12 , so that it can fit the folded edge 33 to constrain it. The inner side surfaces of the two die side plates 13 are perpendicular to each other, just constraining the top surfaces of two adjacent folded edges 33 .

[0027] Furthermore, the die side plate 13 extends rearward to form a floating platform beyond the die table 12 , and the end of the pressing plate 23 has a matching limiting blocking portion, so as to constrain the corner extension portion of the folded edge 33 .

[0028] Among them, the two ends of the pressing plate 23 are provided with extended support plates 29 which are perpendicular to the ends of the pressing plate 23 and extend outward, and have more supporting positions to support the sheet material 31 and to constrain the folded edge 33 on the inside, thereby increasing the range of constraint and reducing the deformation of the non-processed parts of the sheet material.

[0029] Among them, the die 11 is fixedly mounted on the die pad 15, and the punch 21 is fixedly mounted on the punch pad 25; the punch pad is provided with a guide column 28, and the guide column passes through the punch 21 and the die 11 and extends into the die pad 25 to form a basic mold structure, so that the punch 21 and the die 11 can be smoothly opened and closed along the guide column 28 to process and shape the sheet metal.

[0030] Furthermore, an upper mounting block 16 is provided on the top surface of the female die pad 15, and a lower mounting block 26 is provided on the bottom surface of the male die pad 25, so that the mold can be better mounted on the molding equipment.

[0031] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A circular arc adjacent edge synchronous forming die, characterized in that: It comprises a matching die and a punch, the die having a L-shaped die platform, the punch having a punch arc edge matched with the die platform, the die having die side plates located at both ends of the die platform, the punch being provided with a pressure plate located between the die and the punch and elastically floating, the pressure plate being in a L-shaped shape matched with the shape of the die platform and having two ends opposite to the die side plates, and a gap for accommodating the folded edge is provided between the pressure plate and the die side plates.

2. The arc adjacent edge synchronous forming die according to claim 1, characterized in that: The pressing plate is higher than the concave arc edge of the punch when it floats naturally, and is flush with the lowest position of the concave arc edge of the punch when it is pressed down to the lowest position.

3. The arc adjacent edge synchronous forming die according to claim 2, characterized in that: The inner side edge of the concave mold platform is provided with a concave mold convex arc edge which matches the concave arc edge of the convex mold.

4. The arc adjacent edge synchronous forming die according to claim 1, characterized in that: The concave mold side plate is perpendicular to the end of the concave mold platform, and the inner side surfaces of the two concave mold side plates are perpendicular to each other.

5. The arc adjacent edge synchronous forming die according to claim 4, characterized in that: The side plate of the concave mold extends rearward to form a floating platform beyond the concave mold platform, and the end of the pressing plate has a matching limiting blocking portion.

6. The arc adjacent edge synchronous forming die according to claim 1, characterized in that: Both ends of the pressing plate are provided with extension support plates which are perpendicular to the ends of the pressing plate and extend outward.

7. The arc adjacent edge synchronous forming die according to claim 1, characterized in that: The female die is fixedly mounted on the female die pad, and the male die is fixedly mounted on the male die pad; the male die pad is provided with a guide column, and the guide column passes through the male die and the female die and extends into the female die pad.

8. The arc adjacent edge synchronous forming die according to claim 7, characterized in that: An upper mounting block is arranged on the top surface of the female die pad, and a lower mounting block is arranged on the bottom surface of the male die pad.

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