CN208083340U - Cabinet-type electric furnace for turbo blade isothermal forging - Google Patents

Abstract

The utility model provides a box-type electric furnace for isothermal forging of turbine blades, which includes a box body and a lower mold arranged in the box body. The first hydraulic cylinder, the inner side of the first through hole is provided with an upper mold, the top surface of the upper mold is fixedly connected with the piston rod of the first hydraulic cylinder, and the upper mold is located above the lower mold; The material inlet, the outer side of the material inlet is provided with an electric gate, the conveyor belt and the second hydraulic cylinder, the bottom of the box located on the side of the lower die away from the material inlet is provided with a second through hole, and the inside of the second through hole is provided with a There is a columnar structure guide block, the guide block enters and leaves the box through the second through hole, and the third hydraulic cylinder is arranged outside the second through hole; its heating effect is good, which can make the mold and the workpiece be in constant forging The forging is carried out at high temperature, and it can be operated continuously, which obviously improves the working efficiency, shortens the feeding and discharging time, prevents heat loss, and reduces the production cost.

Description

Box-type electric furnace for isothermal forging of turbine blades

technical field

The utility model relates to the field of electric furnaces, in particular to a box-type electric furnace used for isothermal forging of turbine blades.

Background technique

The turbine is mainly assembled from the hub and blades. The production of turbine blades requires multi-process processing, one of which requires isothermal forging in a box-type electric furnace, and isothermal forging is to control the temperature of the mold at approximately the same temperature as the workpiece. Within the range, the workpiece can be processed to complete the forming process under the condition that the temperature is basically constant. Only the furnace door can be opened and closed in the traditional box-type electric furnace. If the mold and the workpiece are put into the furnace, and then taken out and sent to the forging press when the temperature is reached, this cannot be realized for the structure of the traditional box-type electric furnace; Use the coil of the intermediate frequency or high frequency generator to heat the mold. The coil is still placed outside the mold and the workpiece during forging and pressing. For safety reasons, the power supply of the electric furnace should be disconnected during the forging process and when picking up the workpiece. At this time The temperature of the mold also drops accordingly. When the second workpiece is installed, the power is turned on again to heat the mold and the second workpiece; this method has low working efficiency, cannot work continuously, and the temperature is not stable during forging , have a greater impact on product quality.

Utility model content

In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a box-type electric furnace for isothermal forging of turbine blades, which has a good heating effect and can make both the mold and the workpiece be at a constant forging temperature Forging is carried out, and it can be operated continuously, which significantly improves work efficiency, shortens the feeding and discharging time, prevents heat loss, and reduces production costs.

For reaching this purpose, the utility model adopts following technical scheme:

The utility model provides a box-type electric furnace for isothermal forging of turbine blades. The side walls of the box body are butted against each other, the top wall of the box body is provided with a first through hole, the outside of the first through hole is provided with a first hydraulic cylinder, and the inside of the first through hole is provided with an upper mold, the top surface of the upper mold is fixedly connected with the end of the piston rod of the first hydraulic cylinder passing through the first through hole, and the upper mold is located above the lower mold; The side walls of the connected boxes are provided with a feed port, and an electric gate is provided outside the feed port, and a conveyor belt is provided on the side of the electric gate far away from the box body. The top surface of the belt is at the same height as the bottom surface of the feed port, and the conveying direction of the conveyor belt is perpendicular to the feed direction of the feed port, and the side of the conveyor belt away from the feed port is A second hydraulic cylinder is provided, the piston rod of the second hydraulic cylinder faces the feed port and can enter and exit the box from the feed port; The bottom of the box on one side is provided with a second through hole, and the inside of the second through hole is provided with a columnar structure guide block, the diameter of the guide block is equal to the diameter of the second through hole , and the guide block enters and exits the box from the second through hole, a third hydraulic cylinder is provided outside the second through hole, and the end of the piston rod of the third hydraulic cylinder is connected to the guide The bottom of the material block is fixedly connected; the top surface of the material guide block is inclined, and the higher slope is at the same height as the top surface of the lower mold; the inner wall of the box is also closely attached to a heating layer, and the A heating wire is arranged in the heating layer.

In a preferred technical solution of the utility model, a square tube-shaped feed pipe is provided at the feed inlet, and the bottom surface of the feed pipe is close to the top surface of the lower die, and is in contact with the feed inlet. The two opposite tube walls of the ports connected to the material guiding tube are bent outwards into a trumpet shape.

In a preferred technical solution of the utility model, a first retaining ring is provided at the joint between the upper mold and the piston rod of the first hydraulic cylinder, the first retaining ring is located in the box, and the The outer diameter of the first retaining ring is greater than the diameter of the first through hole; the connection between the guide block and the piston rod of the third hydraulic cylinder is provided with a second retaining ring, and the second retaining ring is located at the outside the box, and the outer diameter of the second retaining ring is larger than the diameter of the second through hole.

In a preferred technical solution of the present invention, the end surface of the first retaining ring close to the first hydraulic cylinder and the end surface of the second retaining ring far away from the third hydraulic cylinder are provided with gaskets.

In a preferred technical solution of the utility model, the outer wall of the box is covered with a thermal insulation layer.

The beneficial effects of the utility model are:

The utility model provides a box-type electric furnace for isothermal forging of turbine blades, which has good heating effect, and the design of the cladding heating layer provides sufficient heat supply, so that both the mold and the workpiece are forged at a constant forging temperature; Moreover, the cooperation of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the material guide block, the conveyor belt and the electric gate realizes continuous operation, significantly improves the work efficiency, shortens the feeding and discharging time, and prevents heat lost, reducing production costs.

Description of drawings

Fig. 1 is a schematic structural view of a box-type electric furnace for isothermal forging of turbine blades provided by a specific embodiment of the present invention;

Fig. 2 is a schematic structural view of the material guiding pipe provided by the specific embodiment of the present invention.

In the picture:

100, box body; 110, first through hole; 120, second through hole; 130, feed inlet; 140, heating layer; 150, insulation layer; 210, lower die; 220, upper die; 310, first hydraulic pressure Cylinder; 320, the second hydraulic cylinder; 330, the third hydraulic cylinder; 410, electric gate; 420, conveyor belt; 500, guide block; 600, guide tube; 710, the first retaining ring; ring; 800, gasket.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

As shown in Figure 1, a specific embodiment of the utility model discloses a box-type electric furnace for isothermal forging of turbine blades, including a box body 100 and a lower mold 210 disposed in the box body 100, the lower mold The mold 210 is located on one side of the bottom of the box body 100 and is in contact with the side wall of the box body 100. The top wall of the box body 100 is provided with a first through hole 110, and the first through hole 110 is provided with a first hydraulic cylinder 310, and the inside of the first through hole 110 is provided with an upper mold 220, the top surface of the upper mold 220 and the first hydraulic cylinder penetrating through the first through hole 110 The end of the piston rod of 310 is fixedly connected, and the upper mold 220 is located above the lower mold 210; the side wall of the box 100 that is in contact with the lower mold 210 is provided with a feed port 130, The outer side of the feed port 130 is provided with an electric gate 410, and the side of the electric gate 410 away from the box body 100 is provided with a conveyor belt 420, and the top surface of the conveyor belt 420 is connected to the top surface of the feed port 130. The bottom surface is at the same height, and the conveying direction of the conveyor belt 420 is perpendicular to the feeding direction of the feed port 130 , and the side of the conveyor belt 420 away from the feed port 130 is provided with a second hydraulic cylinder 320 , the piston rod of the second hydraulic cylinder 320 faces the feed port 130 and can enter and exit the box 100 from the feed port 130; The bottom of the box body 100 on one side is provided with a second through hole 120, the inner side of the second through hole 120 is provided with a columnar structure guide block 500, the diameter of the guide block 500 is the same as that of the second The diameters of the through holes 120 are equal, and the material guide block 500 enters and exits the box body 100 from the second through hole 120, and a third hydraulic cylinder 330 is arranged on the outside of the second through hole 120. The end of the piston rod of the hydraulic cylinder 330 is fixedly connected to the bottom of the material guide block 500; the top surface of the material guide block 500 is inclined, and the higher slope is at the same height as the top surface of the lower mold 210; The inner wall of the box body 100 is also closely attached to a heating layer 140 , and a heating wire is arranged in the heating layer 140 .

The above-mentioned box-type electric furnace for isothermal forging of turbine blades has a good heating effect, and the heat-generating layer 140 is designed to provide sufficient heat, so that both the mold and the workpiece are forged at a constant forging temperature and the mutual cooperation of the first hydraulic cylinder 310, the second hydraulic cylinder 320, the third hydraulic cylinder 330, the guide block 500, the conveyor belt 420 and the electric gate 410 realizes Continuous operation significantly improves work efficiency, shortens feeding and discharging time, prevents heat loss, and reduces production costs.

More specifically, the heating wire in the heating layer 140 is always in a heating state, so that the inside of the box 100 maintains a certain high temperature condition, and the conveyor belt 420 is transported stably and stops at a fixed point, so that the workpiece to be processed is facing the At the feed port 130, the electric gate 410 is opened at this time, the second hydraulic cylinder 320 is started to push the workpiece onto the lower mold 210 in the box body 100, and the second hydraulic cylinder 320 resets immediately, And close the electric gate 410 at the same time, then the conveyor belt 420 starts and sends the next piece of workpiece to the corresponding position; when the heating temperature reaches the preset value, start the first hydraulic cylinder 310, press down the upper Die 220, to forge the workpiece. After the forging is completed, open the electric gate 410, start the second hydraulic cylinder 320 to push the second workpiece to the lower mold 210 in the box body 100, and Push the forged workpiece onto the material guide block 500, then the third hydraulic cylinder 330 starts to shrink the piston rod, and the forged workpiece falls from the second through hole 120. The second hydraulic cylinder 320 resets immediately and closes the electric gate 410 at the same time, then the conveyor belt 420 starts and sends the next workpiece to the corresponding position; repeat the work and cooperate with each other to realize the continuous forging of the workpiece; It should be noted that the entire process is automatically controlled, the working speed is fast, the time for the workpiece to enter and leave the box 100 is short, and the heat loss is less than the energy consumed for reheating.

Further, a square tube-shaped feed pipe 600 is provided at the feed inlet 130 , the bottom surface of the feed pipe 600 is close to the top surface of the lower mold 210 , and all parts connected to the feed inlet 130 The two opposite pipe walls of the port of the material guide tube 600 are bent outwards into a trumpet shape; the design of the material guide tube 600 can be convenient for the second hydraulic cylinder 320 to push the workpiece along the guide tube when feeding materials. The material tube 600 accurately reaches the processing position to ensure the processing quality of the product.

Further, the connection between the upper mold 220 and the piston rod of the first hydraulic cylinder 310 is provided with a first retaining ring 710, the first retaining ring 710 is located in the box body 100, and the first The outer diameter of the stop ring 710 is greater than the diameter of the first through hole 110; the connection between the guide block 500 and the piston rod of the third hydraulic cylinder 330 is provided with a second stop ring 720, and the second stop ring 720 The ring 720 is located outside the box body 100, and the outer diameter of the second retaining ring 720 is greater than the diameter of the second through hole 120; the design of the first retaining ring 710 can prevent the upper mold 220 from When the first hydraulic cylinder 310 moves, it is separated from the box body 100 from the first through hole 110; and the design of the second retaining ring 720 can prevent the material guide block 500 from moving with the third hydraulic cylinder. When the 330 moves too much into the box body 100, the height between the material guide block 500 and the lower mold 210 is accurately positioned to facilitate discharging.

Further, the end surface of the first retaining ring 710 close to the first hydraulic cylinder 310 and the end surface of the second retaining ring 720 away from the third hydraulic cylinder 330 are provided with a gasket 800 , the gasket The design of 800 can prevent heat from leaking from the connection between the first baffle ring 710 and the box body 100 and the connection between the second baffle ring 720 and the box body 100 during the preheating process, reducing heat loss, reduce manufacturing cost.

Further, the outer wall of the box body 100 is covered with an insulating layer 150; the design of the insulating layer 150 can lock heat in the box body 100, so that the working conditions of high temperature are maintained in the box body 100, and the workpiece is accelerated. forming.

The utility model is described through preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. The utility model is not limited by the specific embodiments disclosed here, and other embodiments falling within the claims of the application all belong to the protection scope of the utility model.

Claims (5)

1. A box-type electric furnace for isothermal forging of turbine blades, characterized in that: It includes a box body (100) and a lower mold (210) arranged in the box body (100), the lower mold (210) is located on one side of the bottom of the box body (100) and is connected to the box body The side walls of (100) are butted against each other, the top wall of the box (100) is provided with a first through hole (110), and the outside of the first through hole (110) is provided with a first hydraulic cylinder (310). ), the inner side of the first through hole (110) is provided with an upper mold (220), the top surface of the upper mold (220) and the first hydraulic cylinder ( 310) is fixedly connected to the end of the piston rod, and the upper die (220) is located above the lower die (210); A feed port (130) is provided on the side wall of the box body (100) that is in contact with the lower mold (210), and an electric gate (410) is provided outside the feed port (130). , the side of the electric gate (410) away from the box (100) is provided with a conveyor belt (420), and the top surface of the conveyor belt (420) is at the same level as the bottom surface of the feeding port (130). height, and the conveying direction of the conveyor belt (420) is perpendicular to the feed direction of the feed port (130), and the conveyor belt (420) is provided on the side away from the feed port (130). The second hydraulic cylinder (320), the piston rod of the second hydraulic cylinder (320) is facing the feed port (130), and can enter and exit the box (100) from the feed port (130) ; The bottom of the box (100) on the side away from the feed inlet (130) of the lower mold (210) is provided with a second through hole (120), and the second through hole (120) A columnar structure guide block (500) is provided on the inner side, the diameter of the guide block (500) is equal to the diameter of the second through hole (120), and the guide block (500) is formed from the The second through hole (120) enters and exits the box body (100), and the outside of the second through hole (120) is provided with a third hydraulic cylinder (330), and the piston rod of the third hydraulic cylinder (330) The end is fixedly connected to the bottom of the material guide block (500); the top surface of the material guide block (500) is inclined, and the higher slope is at the same height as the top surface of the lower mold (210); The inner wall of the box body (100) is further provided with a heating layer (140), and a heating wire is arranged in the heating layer (140). 2. A box-type electric furnace for isothermal forging of turbine blades according to claim 1, characterized in that: The feed inlet (130) is provided with a square tubular feed pipe (600), the bottom surface of the feed pipe (600) is close to the top surface of the lower die (210), and the feed inlet (130) Two opposite pipe walls of the port of the material guide pipe (600) connected to each other are bent outwards into a trumpet shape. 3. A box-type electric furnace for isothermal forging of turbine blades according to claim 1, characterized in that: The connection between the upper mold (220) and the piston rod of the first hydraulic cylinder (310) is provided with a first retaining ring (710), and the first retaining ring (710) is located in the box (100) and the outer diameter of the first retaining ring (710) is greater than the diameter of the first through hole (110); the guide block (500) and the piston rod of the third hydraulic cylinder (330) A second stop ring (720) is provided at the connection, the second stop ring (720) is located outside the box (100), and the outer diameter of the second stop ring (720) is larger than that of the second channel. The diameter of the hole (120). 4. A box-type electric furnace for isothermal forging of turbine blades according to claim 3, characterized in that: The end face of the first retaining ring (710) close to the first hydraulic cylinder (310) and the end face of the second retaining ring (720) away from the third hydraulic cylinder (330) are provided with gaskets ( 800). 5. A box-type electric furnace for isothermal forging of turbine blades according to claim 1, characterized in that: The outer wall of the box body (100) is covered with a thermal insulation layer (150).