A precision forging die for engine connecting rod blank

Abstract

The present invention relates to the technical field of engine connecting rod production equipment, and discloses a fine forging die for an engine connecting rod blank, comprising a base, a lower die assembly seat is fixedly installed inside the base, movable holes symmetrically distributed on the left and right are opened inside the lower die assembly seat, a lower die groove is opened on the top of the lower die assembly seat, a sliding support rod is movably installed inside the movable hole, a limiting rod is fixedly installed at the bottom of the sliding support rod, and a limiting seat located inside the movable hole is fixedly installed at the bottom of the limiting rod. The fine forging die for an engine connecting rod blank has the advantages of easy product removal. The forging die has the advantages of a flat end face, good shaping effect, high production efficiency, and suitable for popularization and use. However, when this type of forging die is actually used, the blank is easily stuck in the die groove of the die, resulting in the disadvantage that the product is not easy to remove.

Description

Technical Field

[0001] The invention relates to the technical field of engine connecting rod production equipment, in particular to a fine forging die for an engine connecting rod blank. Background Art

[0002] The engine connecting rod connects the piston and crankshaft, and transmits the force exerted on the piston to the crankshaft, converting the reciprocating motion of the piston into the rotational motion of the crankshaft. The connecting rod group is composed of a connecting rod body, a connecting rod big end cover, a connecting rod small end bushing, a connecting rod big end bearing and a connecting rod bolt (or screw). The connecting rod group is subjected to the gas force transmitted from the piston pin, its own swing and the reciprocating inertia force of the piston group. The magnitude and direction of these forces change periodically. Therefore, the connecting rod is subjected to alternating loads such as compression and tension. The connecting rod must have sufficient fatigue strength and structural stiffness. Insufficient fatigue strength will often cause the connecting rod body or connecting rod bolt to break, and then cause a major accident of damage to the entire machine. If the stiffness is insufficient, it will cause the rod body to bend and deform, and the connecting rod big end to become out of round, resulting in eccentric wear of the piston, cylinder, bearing and crank pin.

[0003] According to a forging die for an engine connecting rod blank proposed in Chinese patent CN201820359811.4, the forging die has the advantages of a flat end surface, good shaping effect, high production efficiency, and suitability for popularization and use. However, when the forging die is actually used, the blank is easily stuck in the die groove of the die, resulting in the disadvantage that the product is difficult to remove. Therefore, a fine forging die for an engine connecting rod blank is proposed to solve the above-mentioned problem. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a fine forging die for an engine connecting rod blank, which has the advantages of easy product removal, etc., and solves the problem that an engine connecting rod blank forging die proposed in Chinese patent CN201820359811.4 has the advantages of a flat end surface, good shaping effect, high production efficiency, and suitable for popularization and use. However, when this forging die is actually used, the blank is easily stuck in the die groove of the die, resulting in the disadvantage that the product is not easy to be removed.

[0005] In order to achieve the above-mentioned purpose of facilitating product removal, the present invention provides the following technical solutions: a fine forging die for an engine connecting rod blank, comprising a base, a lower die assembly seat is fixedly installed inside the base, movable holes symmetrically distributed on the left and right are opened inside the lower die assembly seat, a lower die groove is opened on the top of the lower die assembly seat, a sliding support rod is movably installed inside the movable hole, a limiting rod is fixedly installed on the bottom of the sliding support rod, a limiting seat located inside the movable hole is fixedly installed on the bottom of the limiting rod, a sliding ring located on the opposite side of the sliding support rod and the limiting rod is movably installed on the outer side of the limiting rod, the opposite sides of the two sliding rings are fixedly connected to the lower mounting plate, a limiting plate located below the lower mounting plate is fixedly installed inside the base, an inner spring having one end fixedly connected to the top of the slip ring is fixedly installed on the bottom of the sliding support rod, and the top of the base The top of the base is provided with a mounting frame, and a hydraulic push rod is fixedly installed inside the mounting frame, and an upper mold assembly seat is fixedly installed on the bottom of the hydraulic push rod, and an active cavity is opened inside the upper mold assembly seat, and an upper mounting plate is movably installed inside the active cavity, and limit blocks located at the top of the upper mounting plate are fixedly installed on the left and right sides of the interior of the mounting frame, and slide rails located at the bottom of the upper mounting plate are fixedly installed on the left and right sides of the interior of the mounting frame, and a sliding hole is opened on the top of the base, and one end of the upper mounting plate is fixedly installed on the bottom of the upper mounting plate to extend to the active shaft inside the sliding hole, and an outer spring with one end fixedly connected to the top of the base is fixedly installed on the bottom of the upper mounting plate, and an upper mold groove is opened at the bottom of the upper mold assembly seat, and push rods are fixedly installed on the opposite sides of the upper mounting plate and the lower mounting plate, and push plates are fixedly installed on one end of the push rod away from the upper mounting plate and the lower mounting plate.

[0006] Preferably, there are two inner springs, and the two inner springs are respectively located on the outsides of the two limiting rods.

[0007] Preferably, the lower mold groove and the upper mold groove are distributed correspondingly up and down, and the specifications of the lower mold groove and the upper mold groove are the same.

[0008] Preferably, the diameters of the two limit rods are smaller than the diameters of the two sliding support rods, and the lengths of the limit rods are matched to the distance between the upper die seat and the lower die seat.

[0009] Preferably, the diameter of the limiting seat is the same as the diameter of the sliding support rod, and the limiting seat is movably connected to the movable hole.

[0010] Preferably, the total number of the push rods is six, and three push rods are respectively installed on opposite sides of the upper mounting plate and the lower mounting plate.

[0011] Preferably, both ends of the upper mounting plate extend to the outside of the upper die set seat, and both ends of the upper mounting plate are movably connected to the two slide rails.

[0012] Preferably, a movable groove is provided inside the lower mold assembly seat and is located outside the lower mounting plate and above the limiting plate, and the depth of the movable groove is adapted to the distance between the push plate and the lower mold groove.

[0013] Preferably, the movable cavity is adapted to the distance between the push plate and the upper mold groove, and the upper mounting plate is in contact with the limiting block.

[0014] Compared with the prior art, the present invention provides a fine forging die for an engine connecting rod blank, which has the following beneficial effects:

[0015] 1. In the initial state of the fine forging die for the engine connecting rod blank, the hydraulic push rod contracts, the hydraulic push rod, the upper die seat is at the top, and the upper mounting plate is limited and pressed down by the limit block, so that the upper mounting plate pushes the push rod and the push plate inside the upper die groove to separate, and the upper die seat drives the sliding support rod to rise, and the limit seat pushes the slip ring upward, and the slip ring drives the lower mounting plate to push the push rod and the push plate inside the lower die groove, so that the push rod and the push plate inside the lower die groove are separated from the lower die groove, so that when the lower die seat and the upper die seat are opened, the push plate can push the products inside the lower die groove and the upper die groove out to prevent the products from being stuck in the upper die seat and the upper die groove, thereby achieving the purpose of facilitating product removal.

[0016] 2. The fine forging die for the engine connecting rod blank, when the product blank is placed in the lower die groove, the hydraulic push rod is started to extend, and the hydraulic push rod pushes the upper die seat downward. The downward pressure of the upper die seat drives the sliding support rod to push the limit rod and the limit seat downward, and makes the lower mounting plate contact with the limit plate. The lower mounting plate drives the push rod and the push plate inside the lower die groove to move downward, so that the push plate contacts with the lower die groove. At the same time, the external spring pushes the upper mounting plate to contact with the top of the active cavity. The upper mounting plate drives the push rod and the push plate inside the upper die groove to move, so that the push plate contacts with the upper die groove, thereby completing the contraction of the push plate and ensuring the normal operation of the forging die. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the structure of a fine forging die for an engine connecting rod blank proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a fine forging die for an engine connecting rod blank proposed by the present invention.

[0019] In the figure: 1. base; 2. lower die assembly seat; 3. movable hole; 4. inner spring; 5. limit plate; 6. lower die groove; 7. push rod; 8. sliding support rod; 9. limit rod; 10. limit seat; 11. sliding hole; 12. movable shaft; 13. outer spring; 14. mounting frame; 15. slide rail; 16. limit block; 17. upper die groove; 18. hydraulic push rod; 19. push plate; 20. movable cavity; 21. upper mounting plate; 22. slip ring; 23. upper die assembly seat; 24. lower mounting plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 , Figure 2The present invention provides the following technical solutions: a fine forging die for an engine connecting rod blank, comprising a base 1, a lower die assembly seat 2 is fixedly installed inside the base 1, and movable holes 3 symmetrically distributed on the left and right are opened inside the lower die assembly seat 2, and a lower die groove 6 is opened on the top of the lower die assembly seat 2, and a sliding support rod 8 is movably installed inside the movable hole 3, and a limiting rod 9 is fixedly installed at the bottom of the sliding support rod 8, and the number of inner springs 4 is two, and the two inner springs 4 are respectively located on the outsides of the two limiting rods 9, and a limiting seat 10 located inside the movable hole 3 is fixedly installed at the bottom of the limiting rod 9, and the diameter of the limiting seat 10 is the same as that of the sliding support rod 8, and the limiting seat 10 is movably connected to the movable hole 3, and a sliding support rod 8 and a limiting rod 9 are movably installed on the outside of the limiting rod 9. The slip ring 22 on one side, the opposite sides of the two slip rings 22 are fixedly connected to the lower mounting plate 24, the base 1 is fixedly installed with a limit plate 5 located below the lower mounting plate 24, the bottom of the sliding support rod 8 is fixedly installed with an inner spring 4 with one end fixedly connected to the top of the slip ring 22, the top of the base 1 is fixedly installed with a mounting frame 14, the inside of the mounting frame 14 is fixedly installed with a hydraulic push rod 18, the model of the hydraulic push rod 18 can be D(Y)T, the bottom of the hydraulic push rod 18 is fixedly installed with an upper mold assembly seat 23, the diameters of the two limit rods 9 are smaller than the diameters of the two sliding support rods 8, and the length of the limit rod 9 is adapted to the distance between the upper mold assembly seat 23 and the lower mold assembly seat 2, and the upper mold assembly seat 23 is provided with an active cavity 20, and the internal active cavity 20 is arranged An upper mounting plate 21 is installed, and limit blocks 16 located at the top of the upper mounting plate 21 are fixedly installed on the left and right sides of the interior of the mounting frame 14, and slide rails 15 located at the bottom of the upper mounting plate 21 are fixedly installed on the left and right sides of the interior of the mounting frame 14. A sliding hole 11 is provided at the top of the base 1, and a movable shaft 12 extending to the inside of the sliding hole 11 is fixedly installed at the bottom of the upper mounting plate 21. An outer spring 13 with one end fixedly connected to the top of the base 1 is fixedly installed at the bottom of the upper mounting plate 21. An upper mold groove 17 is provided at the bottom of the upper mold assembly seat 23, and the lower mold groove 6 and the upper mold groove 17 are distributed correspondingly up and down, and the specifications of the lower mold groove 6 and the upper mold groove 17 are the same. Push rods 7 are fixedly installed on the opposite sides of the upper mounting plate 21 and the lower mounting plate 24, and the movable cavity 20 is fixedly connected to the push rod 7. The distance between the plate 19 and the upper mold groove 17 is adapted, the upper mounting plate 21 is in contact with the limit block 16, the total number of push rods 7 is six, and three push rods 7 are respectively installed on the opposite sides of the upper mounting plate 21 and the lower mounting plate 24, and the push plate 19 is fixedly installed on one end of the push rod 7 away from the upper mounting plate 21 and the lower mounting plate 24. Both ends of the upper mounting plate 21 extend to the outside of the upper mold assembly seat 23, and both ends of the upper mounting plate 21 are movably connected with the two slide rails 15. The interior of the lower mold assembly seat 2 is provided with an active groove located on the outside of the lower mounting plate 24 and above the limit plate 5, and the depth of the active groove is adapted to the distance between the push plate 19 and the lower mold groove 6. In the initial state, the hydraulic push rod 18 is contracted, and the hydraulic push rod 18 and the upper mold assembly seat 23 are at the top.The upper mounting plate 21 is limited and pressed down by the limit block 16, so that the upper mounting plate 21 pushes the push rod 7 and the push plate 19 inside the upper mold groove 17 to separate, the upper mold assembly seat 23 drives the sliding support rod 8 to rise, and the limit seat 10 pushes the slip ring 22 upward, and the slip ring 22 drives the lower mounting plate 24 to push the push rod 7 and the push plate 19 inside the lower mold groove 6, so that the push rod 7 and the push plate 19 inside the lower mold groove 6 are separated from the lower mold groove 6, so that when the lower mold assembly seat 2 and the upper mold assembly seat 23 are opened, the push plate 19 can push the products inside the lower mold groove 6 and the upper mold groove 17 to prevent the products from being stuck in the upper mold assembly seat 23 and the upper mold groove 17, thereby achieving the purpose of facilitating product removal. Put it into the lower die groove 6, start the hydraulic push rod 18 to extend, the hydraulic push rod 18 pushes the upper die seat 23 downward, the upper die seat 23 pushes the sliding support rod 8 downward to push the limit rod 9 and the limit seat 10, and makes the lower mounting plate 24 contact the limit plate 5, the lower mounting plate 24 drives the push rod 7 and the push plate 19 inside the lower die groove 6 to move downward, so that the push plate 19 contacts the lower die groove 6, and at the same time, the outer spring 13 pushes the upper mounting plate 21 to contact the top of the active cavity 20, and the upper mounting plate 21 drives the push rod 7 and the push plate 19 inside the upper die groove 17 to move, so that the push plate 19 contacts the upper die groove 17, thereby completing the contraction of the push plate 19 and ensuring the normal operation of the forging die.

[0022] To sum up, in the initial state of the fine forging die for the engine connecting rod blank, the hydraulic push rod 18 contracts, the hydraulic push rod 18, the upper die seat 23 is at the top, and the upper mounting plate 21 is limited and pressed down by the limit block 16, so that the upper mounting plate 21 pushes the push rod 7 and the push plate 19 inside the upper die groove 17 to separate, and the upper die seat 23 drives the sliding support rod 8 to rise, and makes the limit seat 10 push the slip ring 22 upward, and the slip ring 22 drives the lower mounting plate 24 to push the push rod 7 and the push plate 19 inside the lower die groove 6, so that the push rod 7 and the push plate 19 inside the lower die groove 6 are separated from the lower die groove 6, so that when the lower die seat 2 and the upper die seat 23 are opened, the push plate 19 can push the products inside the lower die groove 6 and the upper die groove 17 out to prevent the products from being stuck in the upper die seat 23 and the upper die groove 17, thereby achieving the purpose of facilitating product removal, and when the product blank is placed in the lower die groove 6, the hydraulic push rod 18 is started to extend, and the hydraulic push rod 18 pushes the upper die The assembly seat 23 is pressed down, and the upper die assembly seat 23 is pressed down to drive the sliding support rod 8 to push the limit rod 9 and the limit seat 10 downward, and make the lower mounting plate 24 contact with the limit plate 5, and the lower mounting plate 24 drives the push rod 7 and the push plate 19 inside the lower die groove 6 to move downward, so that the push plate 19 contacts with the lower die groove 6, and at the same time, the outer spring 13 pushes the upper mounting plate 21 to contact with the top of the active cavity 20, and the upper mounting plate 21 drives the push rod 7 and the push plate 19 inside the upper die groove 17 to move, so that the push plate 19 contacts with the upper die groove 17, thereby completing the contraction of the push plate 19 and ensuring the normal operation of the forging die, and solving the problem of an engine connecting rod blank forging die proposed in Chinese patent CN201820359811.4. The forging die has the advantages of smooth end surface, good shaping effect, high production efficiency and suitable for popularization and use, but when this kind of forging die is actually used, the blank is easily stuck in the die groove of the die, resulting in the disadvantage that the product is not easy to be taken out.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine forging die for an engine connecting rod blank, comprising a base (1), characterized in that: A lower die assembly seat (2) is fixedly installed inside the base (1), and movable holes (3) symmetrically distributed on the left and right are opened inside the lower die assembly seat (2). A lower die groove (6) is opened on the top of the lower die assembly seat (2), and a sliding support rod (8) is movably installed inside the movable hole (3). A limiting rod (9) is fixedly installed at the bottom of the sliding support rod (8), and a limiting seat (10) located inside the movable hole (3) is fixedly installed at the bottom of the limiting rod (9). The diameter of the limiting seat (10) is the same as that of the sliding support rod (8), and the limiting seat (10) and the movable hole (3) are movably connected; the limiting rod (9) A slip ring (22) is movably mounted on the outer side thereof and is located on the opposite side of the sliding support rod (8) and the limiting rod (9); the opposite sides of the two slip rings (22) are fixedly connected to the lower mounting plate (24); a limiting plate (5) is fixedly mounted on the inside of the base (1) and is located below the lower mounting plate (24); an inner spring (4) having one end fixedly connected to the top of the slip ring (22) is fixedly mounted on the bottom of the sliding support rod (8); the number of the inner springs (4) is two, and the two inner springs (4) are respectively located on the outer sides of the two limiting rods (9); a mounting frame (14) is fixedly mounted on the top of the base (1); the inner portion of the mounting frame (14) is fixedly mounted on the inner side of the sliding support rod (8); the inner portion of the mounting frame (14) is fixedly mounted on the inner side of the sliding support rod (8); the inner portion of the mounting frame (14) is fixedly mounted on the outer side of the two limiting rods (9); and the inner portion of the mounting frame (14) is fixedly mounted on the inner side of the sliding support rod (8). A hydraulic push rod (18) is fixedly mounted on the bottom of the hydraulic push rod (18), an upper die set seat (23) is fixedly mounted on the bottom of the hydraulic push rod (18), a movable cavity (20) is provided inside the upper die set seat (23), an upper mounting plate (21) is movably mounted inside the movable cavity (20), limit blocks (16) located at the top of the upper mounting plate (21) are fixedly mounted on both left and right sides of the interior of the mounting frame (14), slide rails (15) located at the bottom of the upper mounting plate (21) are fixedly mounted on both left and right sides of the interior of the mounting frame (14), a slide hole (11) is provided on the top of the base (1), and a slide hole (11) is fixedly mounted on the bottom of the upper mounting plate (21). The upper mounting plate (21) is provided with a movable shaft (12) whose end extends into the interior of the sliding hole (11); an outer spring (13) having one end fixedly connected to the top of the base (1) is fixedly mounted on the bottom of the upper mounting plate (21); an upper mold groove (17) is provided on the bottom of the upper mold assembly seat (23); the lower mold groove (6) and the upper mold groove (17) are arranged correspondingly up and down, and the specifications of the lower mold groove (6) and the upper mold groove (17) are the same; push rods (7) are fixedly mounted on opposite sides of the upper mounting plate (21) and the lower mounting plate (24); and a push plate (19) is fixedly mounted on one end of the push rod (7) away from the upper mounting plate (21) and the lower mounting plate (24).

2. The engine connecting rod blank fine forging die according to claim 1, characterized in that: The diameters of the two limit rods (9) are both smaller than the diameters of the two sliding support rods (8), and the length of the limit rods (9) is adapted to the distance between the upper die assembly seat (23) and the lower die assembly seat (2).

3. The engine connecting rod blank fine forging die according to claim 1, characterized in that: The total number of the push rods (7) is six, and three push rods (7) are respectively installed on opposite sides of the upper mounting plate (21) and the lower mounting plate (24).

4. The engine connecting rod blank fine forging die according to claim 1, characterized in that: Both ends of the upper mounting plate (21) extend to the outside of the upper die set seat (23), and both ends of the upper mounting plate (21) are movably connected to the two slide rails (15).

5. The engine connecting rod blank fine forging die according to claim 1, characterized in that: The lower die assembly seat (2) is provided with a movable groove located outside the lower mounting plate (24) and above the limit plate (5), and the depth of the movable groove is adapted to the distance between the push plate (19) and the lower die groove (6).

6. The engine connecting rod blank fine forging die according to claim 1, characterized in that: The movable cavity (20) is adapted to the distance between the push plate (19) and the upper mold groove (17), and the upper mounting plate (21) is in contact with the limit block (16).

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