Camshaft forging die

Abstract

The present invention belongs to the field of forging dies, and specifically is a camshaft forging die, comprising a base, the top of which is fixedly connected to a lower die; an upper die is provided on the top of the lower die; a cavity is provided on the opposite sides of the lower die and the upper die; a cleaning assembly is provided on the top of the base; an ejection assembly is provided on the top of the base; the ejection assembly comprises a fixed plate; a plurality of piston cavities are provided on the inner wall of the fixed plate, a piston plate is slidably connected in the piston cavity, and a hole plate is fixedly connected to the bottom of the piston cavity; a spring is fixedly connected between the hole plate and the piston plate, and a limit plate is provided at the bottom of the piston plate; a push rod is fixedly connected to the top of the piston plate, the push rod is penetrated and slidably connected to the base and the lower die, and the end face of the push rod is corresponding to the inner wall of the cavity; the piston plate can push the push rod to lift the forging under the action of air pressure, so as to realize demolding of the forging after forging, which is convenient for subsequent material removal of the forging.

Description

Technical Field

[0001] The invention relates to the field of forging dies, in particular to a camshaft forging die. Background Art

[0002] As a key engine component, the camshaft's machining process demands extremely high precision, strength, and reliability. In camshaft manufacturing, the forging process is a key step in improving material properties and optimizing internal structure. The compatibility of the forging die design with the forming machine directly determines forging quality, production efficiency, and cost.

[0003] Camshaft forging dies generally include the following key structures: the upper die, whose main body is a raised structure, which matches the outer contours of the forging cam, keyway, etc.; the lower die, whose main body is a groove structure, which matches the inner contours of the forging journal, cam base circle, etc.

[0004] In the prior art, during camshaft forging, the loading and removal of steel billets are generally achieved manually through clamps. During use and observation, it was found that since the steel billet fills the lower mold cavity during forging, the forging fits tightly with the lower mold, which causes inconvenience in removing the material.

[0005] Therefore, a camshaft forging die is proposed to address the above problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a camshaft forging die described in the present invention includes a base, the top of the base is fixedly connected to a lower die; an upper die is provided on the top of the lower die; a cavity is provided on the opposite sides of the lower die and the upper die; a cleaning component is provided on the top of the base; an ejection component is provided on the top of the base; the ejection component includes a fixed plate; the fixed plate and the bottom of the base are fixedly connected; a plurality of piston cavities are provided on the inner wall of the fixed plate, a piston plate is slidably connected to the piston cavity, and a hole plate is fixed to the bottom of the piston cavity; a spring is fixed between the hole plate and the piston plate, and A limit plate is provided at the bottom of the piston plate; a push rod is fixedly connected to the top of the piston plate, and the push rod is penetrated by the base and the lower die and is slidably connected, and the end face of the push rod is corresponding to the inner wall of the cavity; a distribution plate is fixedly connected to the bottom of the fixed plate, and an air intake pipe is connected to one side of the distribution plate; the distribution plate and the piston cavity in the fixed plate are connected; an exhaust air duct is connected between the multiple piston cavities inside the fixed plate, and pressure relief components connected to the exhaust air duct are provided on both sides of the fixed plate; the piston plate can push the push rod to lift the forging under the action of air pressure, so as to realize demolding of the forging after forging, which is convenient for subsequent material removal of the forging.

[0008] Preferably, the pressure relief assembly includes a first exhaust pipe, and the first exhaust pipe is connected to the exhaust duct in the fixed plate; a sphere is provided on the inner wall of the first exhaust pipe, and a spring is fixed between the sphere and the inner wall of the first exhaust pipe; a ball seat corresponding to the sphere is provided inside the first exhaust pipe; the bottom of the first exhaust pipe is connected to the second exhaust pipe; by providing the sphere, the sphere can stop sealing the first exhaust pipe under the action of air pressure to facilitate the escape of airflow in the fixed plate, thereby ensuring the unidirectionality of the airflow in the first exhaust pipe and reducing the situation where external impurities flow back into the fixed plate through the first exhaust pipe.

[0009] Preferably, the bottom of the first exhaust pipe is connected to a shell, and a turbine is provided inside the shell. The turbine is rotatably connected to the fixed plate, and the shell is fixedly connected to the fixed plate; a cam is fixedly connected to the middle of the turbine through a connecting rod; a rod is provided on the top of the cam; one end of the rod is rotatably connected to the bottom of the base, and the other end of the rod is fixedly connected to a hammer; a striking plate is fixedly connected to the bottom of the base; when the air pump is started, compressed air will be ejected from the second exhaust pipe. Since the outlet direction of the second exhaust pipe is the tangential direction of the turbine, the air flow can drive the turbine to rotate under the action of air flow disturbance when it is ejected, and the turbine can drive the cam to rotate. When the cam rotates, it can periodically lift the rod body. During the process, the rod body is first lifted by the cam protrusion. When the cam is separated from the rod body, the hammer at the end of the rod body can be reset under the action of gravity and knock the strike plate. The knocking action can be transmitted to the cavity in the lower mold through the base, thereby causing debris attached to the cavity to fall off, making it easier for the subsequent cleaning component to clean the debris.

[0010] Preferably, a guide rod is fixed to the inside of the hammer body, and a steel sheet is slidably connected to the outer wall of the guide rod; by arranging the steel sheet, when the hammer body is lifted up along with the rod body and begins to reset, the hammer body tends to move downward, and the steel sheet inside the hammer body will move up under the action of inertia and be located above the inside of the hammer body. When the hammer body strikes the striking plate, the steel sheet will fall along the guide rod to the bottom of the inside of the hammer body. At this time, the force generated by the falling steel sheet will offset the rebound force of the hammer body, thereby reducing the rebound caused by the striking plate striking the hammer body, thereby ensuring that the overall component composed of the rod body and the hammer body will not affect the reciprocating transmission action between the rod body and the hammer body due to rebound.

[0011] Preferably, the cleaning assembly includes a pair of slide rails, and the slide rails are fixedly mounted on the top of the base; the top of the slide rails is slidably connected to a frame; the top of the frame is fixedly connected to a cylinder; the output end of the cylinder is fixedly connected to a cleaning plate, and a plurality of feed ports are provided on the surface of the cleaning plate; the top of the cleaning plate is connected to a third exhaust pipe; one side of the frame is fixedly connected to a box; a sieve plate is provided inside the box; one side of the box is connected to a first exhaust pipe, and the first exhaust pipe is located below the sieve plate; the top of the box is connected to a second exhaust pipe; the third exhaust pipe and the second exhaust pipe are slidably connected; one side of the frame is provided with a power assembly; after the air pump stops working, the power assembly can be used to control the frame to be on the side of the lower mold Above, start the cylinder and the negative pressure equipment connected to the end of the first exhaust pipe in turn. The negative pressure equipment can be a vacuum pump or a vacuum cleaner. After the cylinder is started, the cleaning plate can enter the cavity of the lower mold. After the negative pressure equipment is started, the box, the second exhaust pipe, the third exhaust pipe, and the cleaning plate are all in a negative pressure state. The cleaning plate can absorb the debris remaining in the cavity through the feed port on its surface. These debris can be absorbed into the box and intercepted by the sieve plate. Finally, the cabinet door on one side of the box can be opened to remove the debris on the sieve plate. During the process, the cleaning plate is driven by the power component to comprehensively clean the inside of the cavity. It is worth mentioning that when the cylinder reaches its limit stroke, a certain working gap should be left between the cleaning plate and the inner wall of the cavity.

[0012] Preferably, the power assembly includes a motor, and the motor is fixedly mounted on one side of the frame; a gear is fixedly connected to the output end of the motor; a rack is fixedly connected to one side of one of the slide rails; the rack and the gear are in a meshing relationship; when the frame needs to be moved laterally, the motor can be started to drive the gear to rotate, and the gear will mesh with the rack, so that the frame can move laterally under the meshing action of the gear and the rack. By setting the meshing system composed of the rack and the gear on the side away from the lower die and the upper die, the contamination of it by flying debris during forging can be reduced.

[0013] Preferably, a cleaning ring is provided on the inner wall of the cleaning plate; a plurality of dredging rods are fixedly connected to the outer wall of the cleaning ring, and the dredging rods and the feed port on the surface of the cleaning plate are correspondingly arranged; a sliding rod is fixedly connected to one side of the cleaning ring; the sliding rod and the cleaning plate are through-set and slidably connected; a spring is fixedly connected between the end of the sliding rod and the cleaning plate; when the cavity on the lower mold is cleaned by the cleaning plate, the sliding rod is located between the cleaning plate and the end side of the cavity. When the cleaning plate moves to the end point, the sliding rod can be squeezed by the inner wall of the cavity, and the cleaning ring can move along the cleaning plate with the sliding rod. The cleaning ring can drive the dredging rod to move along the feed port on the surface of the cleaning plate, and the dredging rod can dredge the feed port on the surface of the cleaning plate to reduce debris blocked on the surface of the cleaning plate. During each cleaning process, the cleaning plate should be controlled to move back and forth in the cavity at least once to ensure the absorption effect of the debris in the cavity.

[0014] Preferably, the outer wall of the cleaning ring is fixed with multiple protrusions; the inner wall of the cleaning plate is fixed with multiple elastic sheets; the inner wall of the elastic sheet is fixed with a billiard ball; when the sliding rod is squeezed by the inner wall of the cavity, the cleaning ring can move with the protrusions, and the protrusions can continuously contact the multiple elastic sheets during the movement. The elastic sheets can shrink and deform under the squeezing action of the protrusions and cause the billiard balls to knock on the inner wall of the cleaning plate, so as to assist the dredging rod in clearing the feed port.

[0015] Preferably, an insulation cloth is fixed between the end of the sliding rod and the cleaning plate; by providing the insulation cloth, the insulation cloth can seal and protect the spring wrapped around the outside of the sliding rod to reduce the impact of high temperature in the working environment on its elasticity and extend the service life of the sliding rod.

[0016] Preferably, a baffle is fixed to the surface of the slide rail, and the baffle is located above the rack; the baffle is located between the frame and the slide rail; by setting the baffle, the baffle can block the top of the rack, further reducing the contamination of the rack by debris, so as to ensure stable engagement between the rack and the motor.

[0017] The present invention is beneficial in that:

[0018] 1. In the camshaft forging die described in the present invention, the piston plate can push the ejector pin to lift the forging under the action of air pressure, so as to realize demoulding of the forging after forging, and facilitate the subsequent material removal of the forging.

[0019] 2. The camshaft forging die described in the present invention is provided with a sphere, which can stop sealing the first exhaust pipe under the action of air pressure to facilitate the escape of airflow in the fixed plate, thereby ensuring the unidirectional flow of air in the first exhaust pipe and reducing the situation where external impurities flow back into the fixed plate through the first exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the main body of the present invention;

[0022] Figure 2 Schematic diagram of the structure of the lower mold in the present invention;

[0023] Figure 3 Schematic diagram of the structure of the fixed plate in the present invention;

[0024] Figure 4Schematic diagram of the structure of the first exhaust pipe in the present invention;

[0025] Figure 5 Schematic diagram of the structure of the hammer body in the present invention;

[0026] Figure 6 Schematic diagram of the structure of the frame in the present invention;

[0027] Figure 7 Schematic diagram of the structure of the rack in the present invention;

[0028] Figure 8 Schematic diagram of the structure of the box in the present invention;

[0029] Figure 9 Schematic diagram of the structure of the cleaning plate in the present invention;

[0030] Figure 10 It is a schematic structural diagram of the cleaning ring in the present invention.

[0031] In the figure: 1. base; 12. lower mold; 13. upper mold; 14. cavity; 15. fixing plate; 16. distribution plate; 17. orifice plate; 18. piston plate; 19. ejector rod; 110. intake pipe; 2. first exhaust pipe; 22. sphere; 23. second exhaust pipe; 3. turbine; 32. cam; 33. rod body; 34. hammer body; 35. striking plate; 4. guide rod; 42. steel sheet; 5. slide rail; 52. frame; 53. box body; 54. cylinder; 55. cleaning plate; 561. first exhaust pipe; 562. second exhaust pipe; 563. third exhaust pipe; 57. sieve plate; 6. rack; 62. motor; 63. gear; 7. cleaning ring; 72. dredging rod; 73. slide rod; 8. bump; 82. elastic sheet; 83. billiard ball; 9. insulation cloth; 10. baffle. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0033] Specific examples are given below.

[0034] See also Figures 1 to 10As shown, a camshaft forging die according to an embodiment of the present invention comprises a base 1, wherein a lower die 12 is fixedly connected to the top of the base 1; an upper die 13 is provided on the top of the lower die 12; a cavity 14 is provided on the opposite sides of the lower die 12 and the upper die 13; a cleaning assembly is provided on the top of the base 1; an ejection assembly is provided on the top of the base 1; the ejection assembly comprises a fixed plate 15; the fixed plate 15 and the bottom of the base 1 are fixedly connected; a plurality of piston cavities are provided on the inner wall of the fixed plate 15, a piston plate 18 is slidably connected to the piston cavity, and a hole plate 17 is fixed to the bottom of the piston cavity; the hole plate 17 A spring is fixedly connected between the piston plate 18 and the piston plate 18, and a limit plate is provided at the bottom of the piston plate 18; a push rod 19 is fixedly connected to the top of the piston plate 18, and the push rod 19 is penetrated and slidably connected to the base 1 and the lower mold 12, and the end face of the push rod 19 is corresponding to the inner wall of the cavity 14; a distribution plate 16 is fixedly connected to the bottom of the fixed plate 15, and an air intake pipe 110 is connected to one side of the distribution plate 16; the distribution plate 16 and the piston cavity in the fixed plate 15 are in a communicating relationship; an exhaust air duct is connected between the multiple piston cavities inside the fixed plate 15, and a pressure relief component connected to the exhaust air duct is provided on both sides of the fixed plate 15;

[0035] During forging, the steel billet can be placed inside the cavity 14 on the lower die 12, the machine tool can be started, and the upper die 13 can be driven to approach the lower die 12 through the hydraulic push rod. The upper die 13 can be closed with the lower die 12 and the steel billet in the cavity 14 can be forged. After forging, the upper die 13 can be driven to reset, and the air pump connected to the end of the air inlet pipe 110 can be started, so that the compressed air can pass through the air inlet pipe 110 through the distribution plate 16 and the orifice plate 17 into the piston cavity in the fixed plate 15. Under the action of air pressure, the piston plate 18 can slide along the piston cavity and lift the forging with the push rod 19. The spring between the piston plate 18 and the orifice plate 17 will be stretched to achieve forging in the lower die 12 During the demoulding of the forging, the pressure relief assembly can discharge excess airflow to ensure that the air pressure in the fixed plate 15 is stable. The forging lifted by the ejector pin 19 can then be retrieved by a robot or manually. After turning off the air pump, the debris remaining during die-casting in the cavity 14 can be cleared by the cleaning assembly. Finally, the above steps can be repeated to forge the remaining steel billets. It is worth mentioning that when the air pump is not started, the spring will be in a stretched state, and the piston plate 18 will be fixed under the action of the limit plate and make the end face of the ejector pin 19 flush with the inner wall of the cavity 14; the piston plate 18 can push the ejector pin 19 to lift the forging under the action of air pressure to achieve demoulding of the forging after forging, which is convenient for subsequent material retrieval of the forging.

[0036] See also Figure 3 and Figure 4As shown, the pressure relief assembly includes a first exhaust pipe 2, and the first exhaust pipe 2 is in communication with the exhaust duct in the fixed plate 15; a sphere 22 is provided on the inner wall of the first exhaust pipe 2, and a spring is fixed between the sphere 22 and the inner wall of the first exhaust pipe 2; a ball seat corresponding to the sphere 22 is provided inside the first exhaust pipe 2; and the bottom of the first exhaust pipe 2 is connected to the second exhaust pipe 23;

[0037] When the air pump connected to the intake pipe 110 is started, the piston plate 18 will be lifted to the top of the piston chamber under the action of air pressure. At this time, the excess compressed air will flow to the first exhaust pipes 2 on both sides through the exhaust duct. The sphere 22 will be pushed under the action of air pressure and the spring between the sphere 22 and the first exhaust pipe 2 will be in a compressed state. After being pushed, the sphere 22 will stop sealing the first exhaust pipe 2, so that the airflow can be discharged from the second exhaust pipe 23 through the first exhaust pipe 2. This arrangement allows the sphere 22 to seal the first exhaust pipe 2 when the air pump is not started, so as to reduce dust and impurities entering the piston chamber; by setting the sphere 22, the sphere 22 can stop sealing the first exhaust pipe 2 under the action of air pressure to facilitate the escape of airflow in the fixed plate 15, thereby ensuring the unidirectionality of the airflow in the first exhaust pipe 2 and reducing the situation where external impurities flow back into the fixed plate 15 through the first exhaust pipe 2.

[0038] See also Figure 3 and Figure 5 As shown, the bottom of the first exhaust pipe 2 is connected to a housing, and a turbine 3 is provided inside the housing. The turbine 3 is rotatably connected to the fixed plate 15, and the housing and the fixed plate 15 are fixedly connected. A cam 32 is fixedly connected to the middle of the turbine 3 via a connecting rod. A rod 33 is provided on the top of the cam 32. One end of the rod 33 is rotatably connected to the bottom of the base 1, and the other end of the rod 33 is fixedly connected to a hammer 34. A striking plate 35 is fixedly connected to the bottom of the base 1.

[0039] When the air pump is started, a compressed air flow will be ejected from the second exhaust pipe 23. Since the outlet direction of the second exhaust pipe 23 is the tangential direction of the turbine 3, the air flow can drive the turbine 3 to rotate under the action of the air flow disturbance when it is ejected. The turbine 3 can drive the cam 32 to rotate. When the cam 32 rotates, it can periodically lift the rod body 33. During the process, the rod body 33 is first lifted by the protrusion of the cam 32. When the cam 32 is separated from the rod body 33, the hammer 34 at the end of the rod body 33 can be reset under the action of gravity and knock the striking plate 35. The knocking action can be transmitted to the cavity 14 in the lower mold 12 through the base 1, thereby causing the debris attached to the cavity 14 to fall off, making it easier for the subsequent cleaning components to clean the debris. It is worth mentioning that a high-pressure air pump can be used here to ensure that the compressed air flow can drive the above-mentioned movement process.

[0040] See also Figure 5As shown, the guide rod 4 is fixedly connected to the inside of the hammer body 34, and the outer wall of the guide rod 4 is slidably connected to a steel sheet 42;

[0041] By providing the steel sheet 42, when the hammer body 34 is lifted up along with the rod body 33 and begins to reset, the hammer body 34 tends to move downward. The steel sheet 42 inside the hammer body 34 will move up under the action of inertia and be located above the inside of the hammer body 34. When the hammer body 34 strikes the striking plate 35, the steel sheet 42 will fall along the guide rod 4 to the bottom of the inside of the hammer body 34. At this time, the force generated by the falling steel sheet 42 will offset the rebound force of the hammer body 34, thereby reducing the rebound caused by the striking plate 35, thereby ensuring that the integral component composed of the rod body 33 and the hammer body 34 will not affect the reciprocating transmission action between the cam 32 due to the rebound.

[0042] See also Figures 6 to 10 As shown, the cleaning assembly includes a pair of slide rails 5, and the slide rails 5 are fixedly mounted on the top of the base 1; the top of the slide rails 5 is slidably connected to a frame 52; the top of the frame 52 is fixedly connected to a cylinder 54; the output end of the cylinder 54 is fixedly connected to a cleaning plate 55, and a plurality of feed ports are provided on the surface of the cleaning plate 55; the top of the cleaning plate 55 is connected to a third exhaust pipe 563; one side of the frame 52 is fixedly connected to a box 53; a sieve plate 57 is provided inside the box 53; one side of the box 53 is connected to a first exhaust pipe 561, and the first exhaust pipe 561 is located below the sieve plate 57; the top of the box 53 is connected to a second exhaust pipe 562; the third exhaust pipe 563 and the second exhaust pipe 562 are slidably connected; one side of the frame 52 is provided with a power assembly;

[0043] After the air pump stops working, the frame 52 can be controlled by the power component to be above one side of the lower mold 12, and the negative pressure equipment connected to the end of the cylinder 54 and the first exhaust pipe 561 can be started in turn. The negative pressure equipment can be a vacuum pump or a dust collector. After the cylinder 54 is started, the cleaning plate 55 can enter the cavity 14 of the lower mold 12. After the negative pressure equipment is started, the box 53, the second exhaust pipe 562, the third exhaust pipe 563, and the cleaning plate 55 are all in a negative pressure state. The cleaning plate 55 can absorb the debris remaining in the cavity 14 through the feed port on its surface. These debris can be absorbed into the box 53 and intercepted by the sieve plate 57. Finally, the cabinet door on one side of the box 53 can be opened to remove the debris on the sieve plate 57. During the process, the cleaning plate 55 can be driven by the power component to comprehensively clean the inside of the cavity 14. It is worth mentioning that when the cylinder 54 reaches its limit stroke, a certain working gap should be left between the cleaning plate 55 and the inner wall of the cavity 14.

[0044] See also Figure 7As shown, the power assembly includes a motor 62, and the motor 62 is fixedly mounted on one side of the frame 52; the output end of the motor 62 is fixedly connected to a gear 63; one side of one of the slide rails 5 is fixedly connected to a rack 6; the rack 6 is in meshing relationship with the gear 63;

[0045] When the frame 52 needs to be moved laterally, the motor 62 can be started to drive the gear 63 to rotate, and the gear 63 will engage with the rack 6, so that the frame 52 can be moved laterally under the meshing action of the gear 63 and the rack 6. By setting the meshing system composed of the rack 6 and the gear 63 on the side away from the lower die 12 and the upper die 13, the contamination of the forging by flying debris can be reduced during forging.

[0046] See also Figure 9 and Figure 10 As shown, a cleaning ring 7 is provided on the inner wall of the cleaning plate 55; a plurality of dredging rods 72 are fixedly connected to the outer wall of the cleaning ring 7, and the dredging rods 72 are arranged corresponding to the feed opening on the surface of the cleaning plate 55; a sliding rod 73 is fixedly connected to one side of the cleaning ring 7; the sliding rod 73 and the cleaning plate 55 are arranged to penetrate and be slidably connected; a spring is fixedly connected between the end of the sliding rod 73 and the cleaning plate 55;

[0047] When the cavity 14 on the lower mold 12 is cleaned by the cleaning plate 55, the slide bar 73 is located between the cleaning plate 55 and the end side of the cavity 14. When the cleaning plate 55 moves to the end point, the slide bar 73 can be squeezed by the inner wall of the cavity 14, and the cleaning ring 7 can move along the cleaning plate 55 together with the slide bar 73. The cleaning ring 7 can drive the clearing rod 72 to move along the feed port on the surface of the cleaning plate 55. The clearing rod 72 can clear the feed port on the surface of the cleaning plate 55 to reduce debris blocking the surface of the cleaning plate 55. During each cleaning process, the cleaning plate 55 should be controlled to move back and forth in the cavity 14 at least once to ensure the absorption effect of the debris in the cavity 14.

[0048] See also Figure 9 and Figure 10 As shown, the outer wall of the cleaning ring 7 is fixed with a plurality of protrusions 8; the inner wall of the cleaning plate 55 is fixed with a plurality of elastic sheets 82; the inner wall of the elastic sheet 82 is fixed with a billiard ball 83;

[0049] When the slide rod 73 is squeezed by the inner wall of the cavity 14, the cleaning ring 7 can move with the protrusion 8. During the movement of the protrusion 8, it can continuously contact multiple elastic sheets 82. The elastic sheets 82 can shrink and deform under the squeezing action of the protrusion 8 and cause the billiard ball 83 to knock on the inner wall of the cleaning plate 55, so as to assist the dredging rod 72 in clearing the feed port.

[0050] See also Figure 10 As shown, a heat-insulating cloth 9 is fixed between the end of the slide rod 73 and the cleaning plate 55;

[0051] By providing the heat-insulating cloth 9 , the heat-insulating cloth 9 can seal and protect the spring wound around the outside of the slide rod 73 , thereby reducing the influence of high temperature in the working environment on its elasticity and extending the service life of the slide rod 73 .

[0052] See also Figure 7 As shown, a baffle 10 is fixed to the surface of the slide rail 5, and the baffle 10 is located above the rack 6; the baffle 10 is located between the frame 52 and the slide rail 5;

[0053] By providing the baffle 10 , the baffle 10 can shield the upper portion of the rack 6 , further reducing the possibility of debris contaminating the rack 6 , thereby ensuring stable engagement between the rack 6 and the motor 62 .

[0054] Working principle: During forging, the steel billet can be placed inside the cavity 14 on the lower die 12, the machine tool can be started, and the upper die 13 can be driven to approach the lower die 12 through the hydraulic push rod. The upper die 13 can be closed with the lower die 12 and the steel billet in the cavity 14 can be forged. After forging, the upper die 13 can be driven to reset, and the air pump connected to the end of the intake pipe 110 can be started, so that the compressed air can pass through the intake pipe 110 through the distribution plate 16 and the orifice plate 17 into the piston cavity in the fixed plate 15. Under the action of air pressure, the piston plate 18 can slide along the piston cavity and lift the forging with the push rod 19. The spring between the piston plate 18 and the orifice plate 17 will be pulled. The air pump is turned off and the debris left in the die cavity 14 during die casting can be cleaned by the cleaning component. Finally, the above steps can be repeated to forge the remaining steel billets. It is worth mentioning that when the air pump is not started, the spring will be in a stretched state, and the piston plate 18 will be fixed under the action of the limit plate and the end face of the push rod 19 will be flush with the inner wall of the die cavity 14. When the air pump connected to the air inlet pipe 110 is started, the piston plate 18 will be lifted to At the top of the piston chamber, the excess compressed air will flow to the first exhaust pipes 2 on both sides through the exhaust duct. The ball 22 will be pushed by the air pressure and the spring between the ball 22 and the first exhaust pipe 2 will be in a compressed state. After the ball 22 is pushed, it will stop sealing the first exhaust pipe 2, so that the air can be discharged from the second exhaust pipe 23 through the first exhaust pipe 2. This setting can make the ball 22 seal the first exhaust pipe 2 when the air pump is not started, so as to reduce the dust and impurities entering the piston chamber; when the air pump is started, compressed air will be ejected from the second exhaust pipe 23. Since the outlet direction of the second exhaust pipe 23 is the tangential direction of the turbine 3, the air will be ejected. When the cam 32 rotates, the turbine 3 can be driven to rotate under the action of the airflow disturbance, and the turbine 3 can drive the cam 32 to rotate. When the cam 32 rotates, the rod body 33 can be periodically lifted. During the process, the rod body 33 is first lifted by the protruding portion of the cam 32. When the cam 32 is separated from the rod body 33, the hammer 34 at the end of the rod body 33 can be reset under the action of gravity and knock the striking plate 35. The knocking effect can be transmitted to the cavity 14 in the lower mold 12 through the base 1, thereby causing the debris attached to the cavity 14 to fall off, making it easier for the subsequent cleaning component to clean the debris. It is worth mentioning that a high-pressure air pump can be used here to ensure that the compressed air flow can drive the above-mentioned movement process.By providing the steel sheet 42, when the hammer body 34 is lifted along with the rod body 33 and begins to reset, the hammer body 34 tends to move downward, and the steel sheet 42 inside the hammer body 34 will move up under the action of inertia and be located above the inside of the hammer body 34. When the hammer body 34 strikes the striking plate 35, the steel sheet 42 will fall along the guide rod 4 to the bottom of the inside of the hammer body 34. At this time, the force generated by the falling steel sheet 42 will offset the rebound force of the hammer body 34, thereby reducing the rebound caused by the striking of the hammer body 34 and the striking plate 35, thereby ensuring that the integral component composed of the rod body 33 and the hammer body 34 will not affect the reciprocating transmission action between the cam 32 due to the rebound; after the air pump stops working, the frame 52 can be controlled by the power component to be located above one side of the lower mold 12 , start the negative pressure device connected to the end of the cylinder 54 and the first exhaust pipe 561 in sequence. The negative pressure device can be a vacuum pump or a dust cleaner. After the cylinder 54 is started, the cleaning plate 55 can enter the cavity 14 of the lower mold 12. After the negative pressure device is started, the box 53, the second exhaust pipe 562, the third exhaust pipe 563, and the cleaning plate 55 are all in a negative pressure state. The cleaning plate 55 can absorb the debris remaining in the cavity 14 through the feed port on its surface. These debris can be absorbed into the box 53 and intercepted by the sieve plate 57. Finally, the cabinet door on one side of the box 53 can be opened to remove the debris on the sieve plate 57. In the process, the cleaning plate 55 can be driven by the power component to comprehensively clean the inside of the cavity 14. It is worth mentioning that the extreme pressure of the cylinder 54 When the stroke is limited, a certain working gap should be left between the cleaning plate 55 and the inner wall of the cavity 14; when the frame 52 needs to be moved laterally, the gear 63 can be driven to rotate by starting the motor 62, and the gear 63 will mesh with the rack 6, so that the frame 52 can be moved laterally under the meshing action of the gear 63 and the rack 6. By setting the meshing system composed of the rack 6 and the gear 63 on the side away from the lower die 12 and the upper die 13, the contamination of the flying debris during forging can be reduced; when the cavity 14 on the lower die 12 is cleaned by the cleaning plate 55, the sliding rod 73 is located between the cleaning plate 55 and the end side of the cavity 14. When the cleaning plate 55 moves to the end point, the sliding rod 73 can be squeezed by the inner wall of the cavity 14, and the cleaning ring 7 can slide along The rod 73 moves along the cleaning plate 55, and the cleaning ring 7 can drive the dredging rod 72 to move along the feed port on the surface of the cleaning plate 55. The dredging rod 72 can dredge the feed port on the surface of the cleaning plate 55 to reduce the debris blocked on the surface of the cleaning plate 55. During each cleaning process, the cleaning plate 55 should be controlled to move back and forth in the cavity 14 at least once to ensure the absorption effect of the debris in the cavity 14; when the sliding rod 73 is squeezed by the inner wall of the cavity 14, the cleaning ring 7 can move with the protrusion 8. During the movement of the protrusion 8, it can continuously contact with multiple elastic sheets 82. The elastic sheet 82 can shrink and deform under the squeezing action of the protrusion 8 and cause the billiard ball 83 to knock on the inner wall of the cleaning plate 55, so as to assist the dredging rod 72 in the dredging effect of the feed port;The insulation cloth 9 seals and protects the spring wrapped around the outside of the slide bar 73, reducing the impact of high temperatures in the operating environment on its elasticity and extending the service life of the slide bar 73. The baffle 10 shields the top of the rack 6, further reducing contamination of the rack 6 by debris and ensuring stable engagement between the rack 6 and the motor 62.

[0055] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A camshaft forging die, comprising a base (1), characterized in that: A lower mold (12) is fixedly connected to the top of the base (1); an upper mold (13) is provided on the top of the lower mold (12); a cavity (14) is provided on the opposite sides of the lower mold (12) and the upper mold (13); a cleaning component is provided on the top of the base (1); and an ejection component is provided on the top of the base (1); The ejection assembly comprises a fixed plate (15); the fixed plate (15) and the bottom of the base (1) are in a fixed connection; the inner wall of the fixed plate (15) is provided with a plurality of piston cavities, a piston plate (18) is slidably connected in the piston cavity, and a hole plate (17) is fixedly connected to the bottom of the piston cavity; a spring is fixedly connected between the hole plate (17) and the piston plate (18), and a limit plate is provided at the bottom of the piston plate (18); a push rod (19) is fixedly connected to the top of the piston plate (18), and the push rod (19) is connected to the base (1) and the bottom The molds (12) are all through-set and slidably connected, and the end surface of the ejector rod (19) is correspondingly set to the inner wall of the cavity (14); the bottom of the fixed plate (15) is fixedly connected to the distribution plate (16), and one side of the distribution plate (16) is connected to the air inlet pipe (110); the distribution plate (16) and the piston cavity in the fixed plate (15) are in a communicating relationship; the multiple piston cavities in the fixed plate (15) are connected to an exhaust air duct, and pressure relief components connected to the exhaust air duct are provided on both sides of the fixed plate (15); The pressure relief assembly comprises a first exhaust pipe (2), and the first exhaust pipe (2) is in communication with the exhaust air duct in the fixed plate (15); a sphere (22) is provided on the inner wall of the first exhaust pipe (2), and a spring is fixedly connected between the sphere (22) and the inner wall of the first exhaust pipe (2); a ball seat corresponding to the sphere (22) is provided inside the first exhaust pipe (2); and the bottom of the first exhaust pipe (2) is in communication with the second exhaust pipe (23); The bottom of the first exhaust pipe (2) is connected to a shell, and a turbine (3) is provided inside the shell. The turbine (3) is rotatably connected to the fixed plate (15), and the shell and the fixed plate (15) are fixedly connected. A cam (32) is fixedly connected to the middle of the turbine (3) through a connecting rod. A rod (33) is provided on the top of the cam (32). One end of the rod (33) is rotatably connected to the bottom of the base (1), and a hammer (34) is fixedly connected to the other end of the rod (33). A striking plate (35) is fixedly connected to the bottom of the base (1).

2. The camshaft forging die according to claim 1, characterized in that: A guide rod (4) is fixedly connected to the interior of the hammer body (34), and a steel sheet (42) is slidably connected to the outer wall of the guide rod (4).

3. The camshaft forging die according to claim 2, characterized in that: The cleaning assembly comprises a pair of slide rails (5), and the slide rails (5) are fixedly mounted on the top of the base (1); the top of the slide rails (5) is slidably connected to a frame (52); the top of the frame (52) is fixedly connected to a cylinder (54); the output end of the cylinder (54) is fixedly connected to a cleaning plate (55), and a plurality of feed ports are provided on the surface of the cleaning plate (55); the top of the cleaning plate (55) is connected to a third exhaust pipe (563); one side of the frame (52) is fixedly connected to a box (53); a sieve plate (57) is provided inside the box (53); one side of the box (53) is connected to a first exhaust pipe (561), and the first exhaust pipe (561) is located below the sieve plate (57); the top of the box (53) is connected to a second exhaust pipe (562); the third exhaust pipe (563) and the second exhaust pipe (562) are slidably connected; one side of the frame (52) is provided with a power assembly.

4. The camshaft forging die according to claim 3, characterized in that: The power assembly includes a motor (62), and the motor (62) is fixedly mounted on one side of the frame (52); the output end of the motor (62) is fixedly connected to a gear (63); one side of one of the slide rails (5) is fixedly connected to a rack (6); the rack (6) and the gear (63) are in meshing relationship.

5. The camshaft forging die according to claim 4, characterized in that: The inner wall of the cleaning plate (55) is provided with a cleaning ring (7); the outer wall of the cleaning ring (7) is fixedly connected with a plurality of dredging rods (72), and the dredging rods (72) and the feed opening on the surface of the cleaning plate (55) are arranged correspondingly; a sliding rod (73) is fixedly connected to one side of the cleaning ring (7); the sliding rod (73) and the cleaning plate (55) are arranged to penetrate and are slidably connected; a spring is fixedly connected between the end of the sliding rod (73) and the cleaning plate (55).

6. The camshaft forging die according to claim 5, characterized in that: The outer wall of the cleaning ring (7) is fixedly connected to a plurality of protrusions (8); the inner wall of the cleaning plate (55) is fixedly connected to a plurality of elastic sheets (82); and the inner wall of the elastic sheet (82) is fixedly connected to a billiard ball (83).

7. The camshaft forging die according to claim 6, characterized in that: A heat-insulating cloth (9) is fixedly connected between the end of the sliding rod (73) and the cleaning plate (55).

8. The camshaft forging die according to claim 7, characterized in that: A baffle (10) is fixedly connected to the surface of the slide rail (5), and the baffle (10) is located above the rack (6); the baffle (10) is located between the frame (52) and the slide rail (5).

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