Combined die for conveniently machining steel forging piston head

Abstract

The utility model provides a combined die for conveniently machining a steel forging piston head, and belongs to the technical field of die forging. The combined die for conveniently machining the steel forging piston head comprises a workbench, four fixing columns are arranged at the top of the workbench, a lower die sleeve is arranged in the workbench, a lower female die is arranged in the lower die sleeve, a lower die core is arranged in the center of the bottom of the lower die sleeve, an annular ejector rod is arranged in the lower die core, and a cooling mechanism is arranged on the workbench and comprises a water inlet pipe. The water inlet pipe is arranged on one side of the workbench and provided with a water pump and a refrigerating device, a radiating pipe is arranged around the lower die sleeve in the workbench, a water outlet pipe is arranged on the side, away from the water inlet pipe, of the workbench, a base plate is arranged on the top of the workbench, the periphery of the base plate is in sliding connection with the four fixing columns, an upper die sleeve is arranged at the bottom of the base plate, and a punch is arranged in the upper die sleeve. The steel piston head can be conveniently machined and forged, the structure is simple and clear, operation is easy, and high practical value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of die forging, in particular to a combined die for conveniently processing a steel forged piston head. Background Art

[0002] The piston is an important component in the engine. It is a part that reciprocates in the engine cylinder block. The current new emission standards have put forward higher requirements on the compression ratio of the engine. The increase in compression ratio will inevitably require the strength of the piston to be increased accordingly. Replacing aluminum pistons with steel pistons is the most effective way to increase the strength of the piston. The key technology of steel pistons is precision forging technology, and the core of precision forging technology is precision forging molds.

[0003] At present, there are the following problems with piston forging dies. The forging dies are always in a high temperature and high pressure state during the die-casting and injection molding process, which can easily cause thermal fatigue. Not only does the dies easily crack, but the products also deform due to thermal stress, which seriously affects the quality of the products. The forging of steel pistons is difficult, the die life is short, and they need to be replaced frequently.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a combination die for conveniently processing steel forged piston heads is provided, in order to achieve a purpose with greater practical value. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a combined die for conveniently processing a steel forged piston head.

[0006] The utility model is achieved in this way:

[0007] A combination die for conveniently processing steel forged piston heads, characterized in that it comprises a workbench, four fixed columns are arranged on the top of the workbench, a lower die sleeve is arranged in the workbench, a lower concave die is arranged in the lower die sleeve, a lower die core is arranged at the bottom center of the lower die sleeve, an annular push rod is arranged in the lower die core, and the workbench is provided with a cooling mechanism, the cooling mechanism comprises a water inlet pipe, the water inlet pipe is arranged on one side of the workbench, a water pump and a refrigeration device are arranged on the water inlet pipe, a heat dissipation pipe is arranged around the lower die sleeve inside the workbench, a water outlet pipe is arranged on the side of the workbench away from the water inlet pipe, openings at both ends of the heat dissipation pipe are respectively connected with the water inlet pipe and the water outlet pipe, a pad is arranged on the top of the workbench, the pad is slidably connected with the four fixed columns around it, an upper die sleeve is arranged at the bottom of the pad, and a punch is arranged in the upper die sleeve.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the pad slides up and down on the fixed column through the stamping system above the workbench, a limiting ring is provided near the bottom of the fixed column, and the upper die sleeve is fixed to the bottom of the pad by bolts.

[0010] The beneficial effect of adopting the above further scheme is that the limit ring can prevent the upper die sleeve from excessively squeezing the lower die, thereby extending the life of the die. The stamping system above the workbench can control the up and down movement of the pad, which is convenient for forging and removing the piston head.

[0011] Furthermore, the outer wall of the lower die is gap-matched with the inner wall of the lower die sleeve, the lower die and the lower die core are fixed inside the lower die sleeve by bolts, handles are provided on both sides of the lower die sleeve near the top, and the lower die sleeve and the top of the lower die are provided with corresponding exhaust holes.

[0012] The beneficial effect of adopting the above further scheme is that the lower concave die and the lower die core are fixed inside the lower die sleeve by bolts to facilitate the replacement of the die, and the lower die sleeve is easy to remove through the handle. The lower die sleeve and the lower concave die are provided with exhaust holes to facilitate exhaust during forging, which is beneficial to forging forming.

[0013] Furthermore, the upper portion of the annular push rod is in a circular ring shape, and the lower portion is evenly provided with four connecting rods that penetrate the bottom of the lower die sleeve. The annular push rod can push up to push the forged piston head out of the die.

[0014] The beneficial effect of adopting the above further scheme is that by using an annular ejector rod, the area of ​​the ejection surface is increased, and the bending of the ejector rod and the inability to eject the forgings due to the die sticking, which are prone to occur when using ordinary ejector rods, are reduced, thereby ensuring a smooth production rhythm. The forgings can be ejected quickly and effectively, which is particularly important in automated forging production.

[0015] Furthermore, the heat dissipation pipe is wavy and surrounds the inside of the workbench in multiple circles.

[0016] Furthermore, the water pump delivers water to the refrigeration device, and the refrigeration device cools the water and then discharges the water into the heat dissipation pipe and out of the water outlet pipe.

[0017] The beneficial effect of adopting the above further scheme is that water is sent to the refrigeration device through a water pump, and then the refrigeration device cools the water and discharges it into the heat dissipation pipe. The heat dissipation pipe that is wavy and surrounds the inside of the workbench in multiple circles can increase the contact area and improve the heat dissipation efficiency.

[0018] Furthermore, the outer wall of the upper die sleeve is clearance-matched with the inner wall of the lower concave die.

[0019] The beneficial effect of adopting the above further solution is that during forging, the upper die sleeve can fit tightly with the lower concave die to ensure forging precision.

[0020] The beneficial effects of the utility model are as follows: the utility model obtains a combined die for conveniently processing a steel forged piston head through the above design. Through the structural setting of the combined die, the overall die is split into an upper and lower part, the die is separated at the maximum stress point, the die stress is released in advance, cracks are slowed down, and the die life is improved. At the same time, each die assembly is connected by bolts to facilitate replacement of assemblies and improve work efficiency. The lower die core and the lower concave die are both provided with exhaust holes, which are convenient for exhaust and heat dissipation of the die during forging, which is beneficial to forging and forming. The cooling mechanism is provided to send water into the refrigeration device through a water pump and then the refrigeration device The water is cooled and discharged into the heat dissipation pipe. The wavy heat dissipation pipe that surrounds the inside of the workbench in multiple circles can increase the contact area and improve the heat dissipation efficiency. By improving the heat dissipation and exhaust efficiency, the product production quality can be improved and the production cost can be saved. By using an annular ejector rod, the ejection surface area is increased, and the ejector rod bending and forging die ejection problems that are prone to occur when using ordinary ejectors are reduced, thereby ensuring a smooth production rhythm. It is particularly important that forgings can be ejected quickly and effectively in automated forging production. The utility model has a simple structure and is easy to operate. It meets the function of conveniently processing forged steel piston heads and has a high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a combined die for conveniently processing a steel forged piston head provided by the utility model;

[0023] Figure 2 A right-side plan view schematic diagram of a combined die for conveniently processing a steel forged piston head provided by the utility model;

[0024] Figure 3 A schematic diagram of the three-dimensional structure of the lower part of a combined die for conveniently processing a steel forged piston head provided by the utility model after being disassembled;

[0025] Figure 4 A schematic diagram of the heat dissipation pipe structure of a combined die for conveniently processing a steel forged piston head provided by the utility model;

[0026] In the figure: 100, workbench; 1001, fixing column; 1002, limiting ring; 1003, pad; 2001, lower die sleeve; 2002, lower concave die; 2003, lower die core; 2004, annular ejector rod; 2005, handle; 300, cooling mechanism; 3001, water pump; 3002, refrigeration device; 3003, water inlet pipe; 3004, water outlet pipe; 3005, heat dissipation pipe; 4001, punch; 4002, upper die sleeve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0029] Example

[0030] See also Figure 1-4 The utility model provides a technical solution: a combined die for conveniently processing a steel forged piston head, comprising a workbench 100.

[0031] See also Figure 1-4A combined die for conveniently processing a steel forged piston head, characterized in that it comprises a workbench, four fixed columns 1002 are arranged on the top of the workbench 100, a lower die sleeve 2001 is arranged in the workbench 100, a lower concave die 2002 is arranged in the lower die sleeve 2001, a lower die core 2003 is arranged at the bottom center of the lower die sleeve 200, and an annular ejector rod 2004 is arranged in the lower die core 2003, the workbench 100 is provided with a cooling mechanism 300, the cooling mechanism 300 comprises a water inlet pipe 3003, the water inlet pipe 3003 is arranged on one side of the workbench 100, and the water inlet pipe 3003 is arranged on the side of the workbench 100. A water pump 3001 and a refrigeration device 3002 are provided on 003, a heat dissipation pipe 3005 is provided around the lower die sleeve 2001 inside the workbench 100, a water outlet pipe 3004 is provided on the side of the workbench 100 away from the water inlet pipe 3003, both ends of the heat dissipation pipe 3005 are respectively connected with the water inlet pipe 3003 and the water outlet pipe 3004, a pad 1003 is provided on the top of the workbench 100, and the pad 1003 is slidably connected with four fixed columns 1002 around it, an upper die sleeve 4002 is provided at the bottom of the pad 1003, and a punch 4001 is provided in the upper die sleeve 4002.

[0032] As an embodiment of the present invention, further, the pad 1003 slides up and down on the fixed column 1001 through the stamping system above the workbench 100, and a limiting ring 1002 is provided near the bottom of the fixed column 1001, and the upper mold sleeve 4002 is fixed to the bottom of the pad 1003 by bolts.

[0033] As an embodiment of the present utility model, further, the outer wall of the lower concave die 2002 is gap-matched with the inner wall of the lower die sleeve 2001, the lower concave die 2002 and the lower die core 2003 are fixed to the inside of the lower die sleeve 2001 by bolts, handles 2005 are provided on both sides of the lower die sleeve 2001 near the top, and exhaust holes are provided on the top of the lower die sleeve 2001 and the lower concave die 2002.

[0034] As an embodiment of the present invention, further, the upper portion of the annular push rod 2004 is in a circular ring shape, and the lower portion is evenly provided with four connecting rods that penetrate the bottom of the lower die sleeve 2001. The annular push rod 2004 can push the forged piston head out of the die.

[0035] As an embodiment of the present invention, further, the heat dissipation pipe 3005 is wavy and surrounds the inside of the workbench 100 in multiple circles.

[0036] As an embodiment of the present invention, further, the water pump 3001 delivers water to the refrigeration device 3002 , and the refrigeration device 3002 cools the water and discharges it into the heat dissipation pipe 3005 and then discharges it from the water outlet pipe 3004 .

[0037] As an embodiment of the present invention, further, the outer wall of the upper die sleeve 4002 is clearance-matched with the inner wall of the lower concave die 2002 .

[0038] The specific usage and function of this embodiment are as follows:

[0039] When using the mold, first check whether all components and fixed connections are intact, then move the pad 1003 upwards through the stamping system, place the forging material into the specified position in the lower die 2002 through the mechanical claws, then turn on the water pump 3001 and the refrigeration device 3002, move the pad 1003 downwards to make the upper die sleeve 4002 fit with the lower die 2002, then control the punch 4001 to press down and start forging the piston head, after forging is completed, move the pad 1003 upwards, and at the same time, push the piston head out through the annular push rod 2004, and finally take out the piston head through the mechanical claws to complete a round of forging, repeat the above operations to carry out a new round of forging, through the structural setting of this combined mold, the overall mold is divided into upper and lower parts, the mold is separated at the maximum stress point, the mold stress is released in advance, the crack generation is slowed down, which helps to increase the life of the mold, and at the same time, each mold component is connected by bolts for easy replacement. The replacement components can improve work efficiency. The lower die sleeve 2001 and the lower concave die 2002 are both provided with exhaust holes, which are convenient for exhaust and heat dissipation of the die during forging, which is beneficial to forging. The cooling mechanism 300 is provided to send water into the refrigeration device 3002 through the water pump 3001, and the refrigeration device 3002 cools the water and discharges it into the heat dissipation pipe 3005. The heat dissipation pipe 3005, which is wavy and surrounds the inside of the workbench in multiple circles, can increase the contact area and improve the heat dissipation efficiency. By improving the heat dissipation and exhaust efficiency, the product production quality can be improved and the production cost can be saved. By using the annular ejector rod 2004, the ejection surface area is increased, and the ejector rod bending and forging die jamming that are prone to occur when using ordinary ejector rods are reduced, thereby ensuring a smooth production rhythm and realizing the function of the combined mold to conveniently process the steel piston head. The combined mold is easy to replace and has a prolonged service life. It is easy to operate and has a high practical value.

[0040] It should be noted that the model specifications of the water pump 3001, the refrigeration device 3001, and the punch 4001 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0041] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A combination die for conveniently processing steel forged piston heads. It is characterized in that The invention comprises a workbench (100), wherein the top of the workbench (100) is provided with four fixing columns (1001), a lower die sleeve (2001) is provided inside the workbench (100), a lower concave die (2002) is provided inside the lower die sleeve (2001), a lower die core (2003) is provided at the bottom center of the lower die sleeve (2001), an annular ejector rod (2004) is provided inside the lower die core (2003), the workbench (100) is provided with a cooling mechanism (300), the cooling mechanism (300) comprises a water inlet pipe (3003), the water inlet pipe (3003) is provided on one side of the workbench (100), and a water pump (3001) is provided on the water inlet pipe (3003). and a refrigeration device (3002); a heat dissipation pipe (3005) is arranged inside the workbench (100) around the lower die sleeve (2001); a water outlet pipe (3004) is arranged on the side of the workbench (100) away from the water inlet pipe (3003); two ends of the heat dissipation pipe (3005) are respectively connected to the water inlet pipe (3003) and the water outlet pipe (3004); a pad (1003) is arranged on the top of the workbench (100); the pad (1003) is slidably connected to the four fixing columns (1001) around the pad (1003); an upper die sleeve (4002) is arranged at the bottom of the pad (1003); a punch (4001) is arranged in the upper die sleeve (4002).

2. A combined die for conveniently processing a steel forged piston head according to claim 1, It is characterized in that The pad (1003) slides up and down on the fixed column (1001) through the stamping system above the workbench (100), and a limiting ring (1002) is provided near the bottom of the fixed column (1001), and the upper mold sleeve (4002) is fixed to the bottom of the pad (1003) by bolts.

3. A combined die for conveniently processing a steel forged piston head according to claim 1, It is characterized in that The outer wall of the lower concave die (2002) is loosely matched with the inner wall of the lower die sleeve (2001); the lower concave die (2002) and the lower die core (2003) are fixed inside the lower die sleeve (2001) by bolts; handles (2005) are provided on both sides of the lower die sleeve (2001) near the top; and corresponding exhaust holes are provided on the top of the lower die sleeve (2001) and the lower concave die (2002).

4. A combined die for conveniently processing a steel forged piston head according to claim 1, It is characterized in that The annular push rod (2004) has a circular ring shape at the upper part and four connecting rods penetrating the bottom of the lower die sleeve (2001) are evenly arranged at the lower part. The annular push rod (2004) can push the forged piston head out of the die.

5. A combined die for conveniently processing a steel forged piston head according to claim 1, It is characterized in that The heat dissipation pipe (3005) is wavy and surrounds the interior of the workbench (100) in multiple circles.

6. A combined die for conveniently processing a steel forged piston head according to claim 1, It is characterized in that The water pump (3001) delivers water to the refrigeration device (3002), and the refrigeration device (3002) cools the water and then discharges the water into the heat dissipation pipe (3005) and out of the water outlet pipe (3004).

7. A combined die for conveniently processing a steel forged piston head according to claim 1, It is characterized in that The outer wall of the upper die sleeve (4002) and the inner wall of the lower concave die (2002) are clearance-matched.

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