Heating die holder and heating device for metal forming

Abstract

The utility model relates to a heating die holder and a heating device for metal forming, which comprise a die holder unit, a die is fixed on the die holder unit, the die holder unit comprises a main heating area, a constant temperature area and heat preservation areas, the heat preservation areas are arranged on two sides of the main heating area, and the constant temperature area is arranged between the die and the main heating area; the main heating area, the constant temperature area and the heat preservation area achieve zoned temperature control through different temperature control systems. The heating efficiency of the mold can be improved.

Description

Technical Field

[0001] The utility model relates to the field of hot forming dies, in particular to a heating die seat and a heating device for metal forming. Background Art

[0002] Hot die forging is a type of forging process technology. It generally refers to a precision forging method in which a metal blank is heated to a temperature higher than the recrystallization temperature of the material and then a die is used to plastically form the metal blank into the shape and size of the forging.

[0003] At present, gas heating, resistance furnace heating and other heating technologies are commonly used to achieve heating. However, gas heating technology has the disadvantages of long heating time, difficulty in controlling the cavity surface temperature, certain safety hazards, and the small raised parts in the mold cavity are prone to overheating, resulting in softening of the cavity.

[0004] Resistance furnace heating uses electricity as a heat source, converts electrical energy into thermal energy through electric heating elements, and heats the metal in the furnace by heat radiation or hot air convection. However, in this heating technology, a large amount of energy is consumed by electric heating elements, such as resistance wires, resulting in low heating efficiency.

[0005] Due to the limitations of existing mold heating technology itself, it is difficult to make significant improvements in heating efficiency and temperature control. Utility Model Content

[0006] Based on the above description, the utility model provides a heating mold base and a heating device for metal forming to solve the problem of low mold heating efficiency in the prior art.

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] In a first aspect, the present application provides a heating die base for metal forming, comprising a die base unit, a die being fixed on the die base unit, the die base unit comprising a main heating zone, a constant temperature zone and a heat preservation zone, the heat preservation zone being arranged on both sides of the main heating zone, and the constant temperature zone being arranged between the die and the main heating zone;

[0009] The main heating zone, the constant temperature zone and the heat preservation zone are controlled by different temperature control systems.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the constant temperature zone and the heat preservation zone are made of copper alloy material, and other areas of the mold base unit except the constant temperature zone and the heat preservation zone are made of aluminum alloy material.

[0012] Furthermore, a forging groove is formed on the side wall of the mold away from the mold base unit, and a temperature-uniform cavity is opened inside the mold, and the vertical projection surface of the temperature-uniform cavity on the cross section of the mold covers the forging groove area.

[0013] Furthermore, one or more ventilation holes are formed through the side wall of the temperature-averaging cavity.

[0014] Furthermore, the main heating zone, the constant temperature zone and the heat preservation zone all include a plurality of heating rods arranged at intervals, a plurality of cylindrical grooves are opened on the mold base unit, and the plurality of heating rods are plugged into the plurality of cylindrical grooves one by one.

[0015] Furthermore, the cylindrical groove side wall is fixed with a limiting edge along the circumference of the cylindrical groove, and the heating rod side wall is provided with a clearance groove along its axial direction, and the clearance groove passes through one end of the heating rod, and when the heating rod is inserted into the cylindrical groove, the limiting edge is accommodated in the clearance groove;

[0016] The side wall of the heating rod is also provided with a locking groove along the circumferential direction. When the heating rod is inserted into the cylindrical groove, the limiting edge can be locked into the locking groove by rotating the heating rod.

[0017] On the other hand, the present application provides a heating device for metal forming, comprising an upper die base and a lower die base, the upper die base and the lower die base having the same structure as the above-mentioned die base unit, and the mold of the upper die base and the mold of the lower die base are arranged opposite to each other, and a distance adjustment component is arranged between the upper die base and the lower die.

[0018] Furthermore, the pitch adjustment assembly includes a plurality of threaded screws fixed to the upper die base and a plurality of threaded sleeves fixed to the lower die base, the plurality of threaded screws are threadedly connected one by one with the plurality of threaded sleeves, and a driving source for driving the plurality of threaded screws to rotate is provided in the upper die base.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0020] 1. The main heating zone, constant temperature zone and insulation zone are set in the die base unit. When the metal is heated and formed, the temperature is quickly raised through the main heating zone to reach the forging temperature, and then the die is insulated through the constant temperature zone and insulation zone, so that the forging temperature can be kept stable during the forging process and better temperature control can be achieved;

[0021] 2. Since aluminum alloy has good thermal conductivity and copper alloy has good heat resistance, the heating temperature of the main heating zone in the mold base unit of the present application can be quickly transferred to the mold through the aluminum alloy, and the heat can be slowed down by the copper alloy material to achieve the effect of constant temperature and heat preservation;

[0022] 3. Set up a uniform temperature cavity so that the heat in the main heating zone passes through the uniform temperature cavity before being transferred to the forging groove, thereby evenly distributing the heat at various positions on the cross section of the die, thereby making the temperature of each area of ​​the forging groove more uniform and improving the forging effect;

[0023] 4. The heating rod is provided with a positioning groove and a clearance groove, and the side wall of the cylindrical groove is fixed with a limiting edge, so that the heating rod and the mold base unit can be detachably connected, and the installation and disassembly methods are simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of a heating device for metal forming provided in the present application;

[0025] Figure 2 A schematic diagram of the overall structure of a heating die base for metal forming provided in the present application;

[0026] Figure 3 The heating mold base of this application is used to show the partial structural schematic diagram of the connection structure between the heating rod and the mold base unit;

[0027] Figure 4 A schematic diagram of the cross-sectional structure of the heating mold base used to display the uniform temperature cavity in this application;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Die base unit; 11. Main heating zone; 12. Constant temperature zone; 13. Insulation zone; 14. Cylindrical groove; 15. Limiting edge; 2. Die; 21. Forging groove; 22. Temperature-averaging cavity; 23. Ventilation hole; 3. Heating rod; 31. Giving way groove; 32. Positioning groove;

[0030] 100, upper die base; 200, lower die base; 300, distance adjustment assembly; 301, threaded screw; 302, threaded sleeve. DETAILED DESCRIPTION

[0031] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0033] A heating device for metal forming disclosed in an embodiment of the present application, referring to Figure 1 and Figure 2 , including an upper mold base 100 and a lower mold base 200, the upper mold base 100 and the lower mold base 200 are arranged opposite to each other, and the structural forms of the upper mold base 100 and the lower mold base 200 are the same as the structural form of the mold base unit 1, and the structure of the mold base unit 1 is described in detail below.

[0034] Reference Figure 1 , wherein a die 2 is fixed on the die base unit 1, specifically, a die 2 is fixed on the side of the upper die base 100 facing the lower die base 200, and a die 2 is fixed on the side of the lower die base 200 facing the upper die base 100. The two dies 2 are arranged opposite to each other, and the metal material is clamped between the two dies 2 and heated to achieve hot forging of the metal.

[0035] Further, see Figure 1 A distance adjustment assembly 300 is provided between the upper die base 100 and the lower die base 200, and the distance adjustment assembly 300 includes a plurality of threaded screws 301 fixed to the upper die base 100 and a plurality of threaded sleeves 302 fixed to the lower die base 200. Preferably, the plurality of threaded screws 301 are provided near the four corners of the upper die 2, and the plurality of threaded screws 301 are threadedly connected in the plurality of threaded sleeves 302 one by one. A driving source for driving the plurality of threaded screws 301 to rotate synchronously is also provided in the upper die 2, so that the distance between the upper die base 100 and the lower die base 200 is adjusted by driving the threaded screws 301 to rotate.

[0036] Shortening the distance between the upper die base 100 and the lower die base 200 allows the upper and lower dies 2 to be close to each other to achieve hot forging of the metal; increasing the distance between the upper die base 100 and the lower die base 200 allows for taking out the forged metal product, or placing metal raw materials on the die 2.

[0037] The present application also discloses a heating die holder for metal forming, referring to Figure 2 , including the above-mentioned mold base unit 1, the mold 2 is fixed to the mold base unit 1, and the mold base unit 1 includes a main heating zone 11, a constant temperature zone 12 and a heat preservation zone 13, wherein the heat preservation zone 13 is arranged on both sides of the main heating zone 11, and the constant temperature zone 12 is arranged between the mold 2 and the main heating zone 11. The main heating zone 11, the constant temperature zone 12 and the heat preservation zone 13 are respectively connected to a temperature patrol meter, through which the real-time temperature of each area can be independently monitored, and the target temperature and over-temperature alarm threshold of each area can be independently set.

[0038] Furthermore, since copper alloy absorbs heat faster and dissipates heat slower than aluminum alloy, the constant temperature zone 12 and the insulation zone 13 are made of copper alloy material, and other areas of the mold base unit 1 except the constant temperature zone 12 and the insulation zone 13 are made of aluminum alloy material.

[0039] When hot forging metal, the main heating zone 11 is first used to achieve rapid heating of the die base unit 1. Since aluminum alloy dissipates heat quickly, heat can be quickly transferred to the die 2, achieving rapid heating of the metal clamped between the die 2. At the same time, the constant temperature zone 12 and the insulation zone 13 increase the temperature. Since the constant temperature zone 12 and the insulation zone 13 have poor heat dissipation performance but good heat absorption performance, they can reduce the heat loss rate. The constant temperature zone 12 and the insulation zone 13 are arranged on the side of the die 2, surrounding the die 2 as a whole, so that the heat transferred to the die 2 is difficult to dissipate, thereby improving the heating efficiency and being able to maintain the temperature of the die 2 as efficiently as possible.

[0040] Further, see Figure 2 The main heating zone 11, the constant temperature zone 12 and the insulation zone 13 all include a plurality of heating rods 3 arranged at intervals, and the mold base unit 1 and the mold 2 are heated and heated by the heating rods 3. A plurality of cylindrical grooves 14 are opened on the mold base unit 1, and the plurality of heating rods 3 are plugged into the plurality of cylindrical grooves 14 one by one, and the heating rods 3 are detachably connected to the mold base unit 1.

[0041] Specifically, refer to Figure 3 A limiting edge 15 is fixed on the inner wall of each cylindrical groove 14 near the notch position along the circumference of the cylindrical groove 14, and a clearance groove 31 is opened along the axial direction of the heating rod 3. The clearance groove 31 passes through the end surface of the heating rod 3 that extends into the cylindrical groove 14; when the heating rod 3 is inserted into the cylindrical groove 14, the limiting edge 15 is accommodated in the clearance groove 31.

[0042] Reference Figure 3 When the heating rod 3 is installed in the cylindrical groove 14, the side wall of the heating rod 3 is provided with a locking groove 32 along its circumference, and after the heating rod 3 is rotated, the limiting edge 15 can be locked in the locking groove 32, thereby locking the position of the heating rod 3 and the mold base unit 1. When the heating rod 3 fails, the heating rod 3 can be taken out by simply rotating the heating rod 3 so that the limiting edge 15 is located in the giving way groove 31. The installation and disassembly are convenient and quick, and the maintenance and replacement of the heating rod 3 are convenient.

[0043] Further, see Figure 2 and Figure 4 A temperature-averaging cavity 22 is provided in the die 2. Specifically, a forging groove 21 is formed on the side wall of the die 2 away from the die base unit 1. The metal is placed in the forging groove 21, and the hot forging of the metal is achieved by extruding the upper and lower dies 2. Figure 2It is only used to illustrate the setting position of the forging groove 21, and the specific shape is not depicted. The shape of the forging groove 21 can be specifically designed according to the shape of the product to be processed. Among them, the temperature-averaging cavity 22 is set close to the forging groove 21, and the vertical projection surface of the temperature-averaging cavity 22 on the cross section of the mold 2 covers the forging groove 21 area, so that the heat of the die base unit 1 must pass through the temperature-averaging cavity 22 before being transferred to the forging groove 21. The heat can be mixed and evenly heated in the temperature-averaging cavity 22, and then further transferred to the forging groove 21, so that the hot forging is more uniform and the forging effect is better.

[0044] Reference Figure 4 One or more vents 23 are also provided on the side wall of the temperature-averaging cavity 22, and the vents 23 are connected to the outside. By providing the vents 23, the air in the temperature-averaging cavity 22 can be kept connected to the outside air, and the pressure in the temperature-averaging cavity 22 can be kept stable. If multiple vents 23 are provided, preferably multiple vents 23 are provided on the same side wall surface, which can slow down the exchange rate between the air in the temperature-averaging cavity 22 and the outside air, thereby slowing down the loss of heat.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating die holder for metal forming, It is characterized in that The mold base unit (1) comprises a mold (2) fixed on the mold base unit (1), the mold base unit (1) comprises a main heating zone (11), a constant temperature zone (12) and a heat preservation zone (13), the heat preservation zone (13) is arranged on both sides of the main heating zone (11), and the constant temperature zone (12) is arranged between the mold (2) and the main heating zone (11); The main heating zone (11), the constant temperature zone (12) and the heat preservation zone (13) are controlled by different temperature control systems.

2. A heating die holder for metal forming according to claim 1, It is characterized in that The constant temperature zone (12) and the heat preservation zone (13) are made of copper alloy material, and other areas of the mold base unit (1) except the constant temperature zone (12) and the heat preservation zone (13) are made of aluminum alloy material.

3. A heating die holder for metal forming according to claim 1, It is characterized in that A forging groove (21) is formed on the side wall of the mold (2) away from the mold base unit (1), and a temperature-averaging cavity (22) is provided inside the mold (2), wherein the vertical projection surface of the temperature-averaging cavity (22) on the cross section of the mold (2) covers the area of ​​the forging groove (21).

4. A heating die holder for metal forming according to claim 3, It is characterized in that One or more ventilation holes (23) are formed through the side wall of the temperature-averaging cavity (22).

5. A heating die holder for metal forming according to claim 1, It is characterized in that The main heating zone (11), the constant temperature zone (12) and the heat preservation zone (13) all include a plurality of heating rods (3) arranged at intervals, and the mold base unit (1) is provided with a plurality of cylindrical grooves (14), and the plurality of heating rods (3) are plugged into the plurality of cylindrical grooves (14) one by one.

6. A heating die holder for metal forming according to claim 5, It is characterized in that The side wall of the cylindrical groove (14) is fixed with a limiting edge (15) along the circumference of the cylindrical groove (14); the side wall of the heating rod (3) is provided with a clearance groove (31) along its axial direction; the clearance groove (31) passes through one end of the heating rod (3); when the heating rod (3) is inserted into the cylindrical groove (14), the limiting edge (15) is accommodated in the clearance groove (31); The side wall of the heating rod (3) is also provided with a locking groove (32) along the circumferential direction. When the heating rod (3) is inserted into the cylindrical groove (14), the heating rod (3) can be rotated so that the limiting edge (15) can be locked into the locking groove (32).

7. A heating device for metal forming, It is characterized in that The invention comprises an upper die base (100) and a lower die base (200), wherein the upper die base (100) and the lower die base (200) have the same structure as the die base unit (1) according to any one of claims 1 to 6, and the die (2) of the upper die base (100) and the die (2) of the lower die base (200) are arranged opposite to each other, and a distance adjustment component (300) is arranged between the upper die base (100) and the lower die (2).

8. A heating device for metal forming according to claim 7, It is characterized in that The pitch adjustment assembly (300) comprises a plurality of threaded screws (301) fixed to the upper die base (100) and a plurality of threaded sleeves (302) fixed to the lower die base (200); the plurality of threaded screws (301) are threadedly connected to the plurality of threaded sleeves (302) in a one-to-one correspondence, and a driving source for driving the plurality of threaded screws (301) to rotate is provided in the upper die base (100).

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