Thermoforming die

Abstract

The utility model relates to the technical field of helicopter manufacturing, and particularly discloses a hot forming die which comprises a plurality of forming mechanisms and a heating furnace, each forming mechanism comprises a press, a male die, a female die and a plurality of material supporting supports, the heating furnace is respectively and fixedly connected with the plurality of presses, the female die is arranged inside the heating furnace, and the output ends of the presses penetrate through the heating furnace. The female dies are arranged on the upper portion of the die and fixedly connected with the male die, the multiple material supporting supports are symmetrically arranged on the two sides of the female dies, the two positioning assemblies are symmetrically arranged between every two adjacent female dies, and through the arrangement, the die is prevented from integrally moving in the pressing process, and therefore indentations caused to the molded surface of a product due to seams are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of helicopter manufacturing, in particular to a thermoforming die. Background Art

[0002] Titanium alloy has low density, high strength, excellent corrosion resistance, fatigue resistance and other properties. The use of titanium alloy iron-clad materials can greatly improve the service life of helicopter rotors, and compared with traditional stainless steel materials, it can greatly reduce the weight of components, achieving a "lightweight" effect. Therefore, breaking through the precise forming and manufacturing of titanium alloy extreme-sized leading edge iron-clad materials is of great significance to ensuring the development of helicopter-related models and improving the comprehensive service performance of helicopter blades. Due to the large size of helicopter rotors, multiple sets of hot forming molds are usually required for simultaneous pressing.

[0003] However, when using multiple sets of hot forming dies to press titanium alloy front edge iron-clad product parts, the hot forming dies are prone to movement, resulting in indentations on the surface of the product parts at the joints between the multiple sets of hot forming dies. Utility Model Content

[0004] The purpose of the utility model is to provide a hot forming mold, aiming to solve the technical problem in the prior art that when multiple sets of hot forming molds are used to press a product with an iron-clad front edge of a titanium alloy, the hot forming molds are prone to movement, thereby causing indentations on the surface of the product at the joints between the multiple sets of hot forming molds.

[0005] To achieve the above-mentioned purpose, the utility model adopts a thermoforming mold, which includes multiple groups of forming mechanisms and heating furnaces. Each group of the forming mechanisms includes a press, a punch, a die and a plurality of support brackets. The heating furnace is fixedly connected to the multiple presses respectively. The die is arranged inside the heating furnace. The output end of the press passes through the heating furnace and is fixedly connected to the punch. The multiple support brackets are symmetrically arranged on both sides of the die, and two groups of positioning components are symmetrically arranged between two adjacent dies.

[0006] Each group of the positioning components includes a connecting block and two pins. The connecting blocks are respectively fitted with the corresponding two concave molds. The two pins respectively pass through the connecting blocks and are inserted into the corresponding concave molds.

[0007] The inner cavity of the heating furnace has a length of 11100 mm, a height of 620 mm and a depth of 650 mm.

[0008] Wherein, the height of the punch is 300 mm and the width is 263.5 mm.

[0009] The height of the die is 308.4 mm and the width is 263.5 mm.

[0010] The utility model provides a hot forming mold. When it is used, the titanium alloy material is placed on the upper surface of the plurality of the dies through the two ends of the heating furnace and supported by the plurality of the supporting brackets. The titanium alloy material is then heated by the heating furnace by heat radiation. The output ends of the plurality of presses respectively drive the corresponding punches to move downward, so that the plurality of punches and the plurality of dies are combined, thereby pressing the titanium alloy material into shape. The punches are connected by dovetail groove locks to prevent the relative displacement of the molds due to expansion of the punches under high temperature conditions, which causes defects such as indentations and misaligned steps on the product surface during the pressing process. The dovetail groove connection of the plurality of punches and the connection of the plurality of dies with the die connection plates can effectively solve the problem in the prior art that when multiple sets of hot forming molds are used to press the titanium alloy front edge iron-clad product, the hot forming molds are prone to movement, thereby causing the joints between the multiple sets of hot forming molds to cause indentations on the product surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a structural diagram of the first embodiment of the present utility model.

[0013] Figure 2 It is a partial structural diagram of the first embodiment of the present utility model.

[0014] Figure 3 It is a partial structural diagram of the first embodiment of the present utility model.

[0015] 101-heating furnace, 102-pressing machine, 103-punch, 104-die, 105-supporting bracket, 106-connecting block, 107-pin. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0017] The first embodiment of this application is:

[0018] See also Figures 1 to 3 ,in Figure 1This is a schematic structural diagram of the first embodiment of the present invention. Figure 2 This is a partial structural diagram of the first embodiment of the utility model. Figure 3 It is a partial structural diagram of the first embodiment of the present utility model.

[0019] The utility model provides a thermoforming mold, including multiple groups of forming mechanisms and a heating furnace 101, each group of the forming mechanisms includes a press 102, a punch 103, a die 104 and a plurality of support brackets 105, the heating furnace 101 is fixedly connected to the multiple presses 102 respectively, the die 104 is arranged inside the heating furnace 101, the output end of the press 102 passes through the heating furnace 101, and is fixedly connected to the punch 103, the multiple support brackets 105 are symmetrically arranged on both sides of the die 104, and two groups of positioning components are symmetrically arranged between two adjacent die 104.

[0020] In this embodiment, the titanium alloy material is placed on the upper surface of at least one of the dies 104 through the two ends of the heating furnace 101 and supported by the multiple support brackets 105. The titanium alloy material is then heated by heat radiation through the heating furnace 101. The output ends of the multiple presses 102 then drive the corresponding punches 103 to move downward, so that the multiple punches 103 and the multiple dies 104 are combined to form the titanium alloy material.

[0021] Furthermore, each group of the positioning components includes a connecting block 106 and two pins 107 . The connecting blocks 106 are respectively fitted with the corresponding two concave molds 104 . The two pins 107 respectively pass through the connecting blocks 106 and are inserted into the corresponding concave molds 104 .

[0022] In this embodiment, by inserting the two pins 107 into the connecting block 106 and the corresponding concave mold 104 respectively, the connection between the two adjacent concave molds 104 will be made tighter.

[0023] Furthermore, the inner cavity of the heating furnace 101 has a length of 11100 mm, a height of 620 mm, and a depth of 650 mm.

[0024] In this embodiment, the inner cavity of the heating furnace 101 has a length of 11100 mm and a height of 620 mm. The exterior is made of steel plates and the interior is sealed with heat-insulating refractory wool.

[0025] Furthermore, the height of the punch 103 is 300 mm and the width is 263.5 mm.

[0026] In this embodiment, the height of the punch 103 is 300 mm, the width is 263.5 mm, the total length of the five dies 104 is 10700 mm, the surface roughness of the punch 103 is Ra1.6, the surface of the punch 103 is sprayed with boron nitride, and thermocouple temperature detection holes are designed at both ends and the front side of the punch 103 for temperature measurement.

[0027] Furthermore, the height of the die 104 is 308.4 mm and the width is 263.5 mm.

[0028] In this embodiment, the height of the concave mold 104 is 308.4 mm, the width is 263.5 mm, and the total length of the five concave molds 104 is 10700 mm.

[0029] The beneficial effects of the present invention are as follows: the titanium alloy material is placed into the upper surface of at least one of the dies 104 through both ends of the heating furnace 101, and is lifted by a plurality of the supporting brackets 105, and then the titanium alloy material is heated by the heating furnace 101 by means of heat radiation, and then the output ends of the plurality of presses 102 respectively drive the corresponding punches 103 to move downward, so that the plurality of punches 103 and the plurality of dies 104 are closed, thereby pressing the titanium alloy material into shape, and connecting the dovetail grooves of the plurality of punches and the closing connecting plates of the plurality of dies can effectively solve the problem in the prior art that when multiple sets of hot forming dies are used to press the product with the front edge of the titanium alloy iron-clad, the hot forming dies are prone to move, thereby causing the joints between the multiple sets of hot forming dies to cause indentations on the surface of the product.

[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A thermoforming mold, characterized in that: It includes multiple groups of forming mechanisms and heating furnaces, each group of the forming mechanisms includes a press, a punch, a die and multiple support brackets, the heating furnace is fixedly connected to the multiple presses respectively, the die is arranged inside the heating furnace, the output end of the press passes through the heating furnace and is fixedly connected to the punch, the multiple support brackets are symmetrically arranged on both sides of the die, and two groups of positioning components are symmetrically arranged between two adjacent dies.

2. The thermoforming mold according to claim 1, characterized in that Each group of the positioning components includes a connecting block and two pins. The connecting blocks are respectively fitted with the corresponding two concave molds. The two pins respectively pass through the connecting blocks and are inserted into the corresponding concave molds.

3. The thermoforming mold according to claim 2, characterized in that The inner cavity of the heating furnace has a length of 11100 mm, a height of 620 mm, and a depth of 650 mm.

4. The thermoforming mold according to claim 3, characterized in that The height of the punch is 300 mm and the width is 263.5 mm.

5. The thermoforming mold according to claim 4, characterized in that The height of the die is 308.4 mm and the width is 263.5 mm.

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