A die-casting mold for producing valve chamber cover

Abstract

The present invention relates to a die-casting mold for producing a valve chamber cover, comprising an upper mold frame and a lower mold frame, an upper mold core and a lower mold core are installed between the upper mold frame and the lower mold frame, a cover forming part is provided in the middle of the upper end of the lower mold core, the upper end of the lower mold core is located in front of the cover forming part and a skirt insert is embedded and installed, the upper end of the skirt insert is provided with a long skirt protrusion, the lower mold core is arranged with a U-shaped skirt protrusion around the cover forming part, the U-shaped skirt protrusion and the long skirt protrusion form a ring, a mold foot is installed on each side of the lower end of the lower mold frame, the lower ends of the two mold feet are installed with a lower mold plate, a plurality of lower hole rods are vertically installed on the lower mold plate, the upper ends of the lower hole rods pass through the lower mold frame and the upper end surface of the skirt insert. The present invention adopts a splicing structure of U-shaped skirt protrusions and long strip skirt protrusions, which can effectively disperse stress. At the same time, when the valve chamber cover is ejected, the annular skirt groove at the bottom of the cover body and the U-shaped skirt protrusions and the long strip skirt protrusions can be well separated.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engine valve chamber covers, in particular to a die-casting die for producing valve chamber covers. Background Art

[0002] The automotive engine is the device that powers the vehicle, the heart of the car, and determines its performance, economy, stability, and environmental friendliness. Depending on the power source, automotive engines can be categorized as diesel, gasoline, electric motors, and hybrids. Each engine has a valve chamber, commonly known as the camshaft chamber or the oil chamber in the cylinder head.

[0003] The valve chamber cover is an important component of the valve chamber structure. Figure 9 and Figure 10 As shown, the valve chamber cover includes a cover body 43, the lower part of the cover body 43 has a chamber 44, the bottom of the cover body 43 is arranged with a circle of annular skirt groove 45 around the chamber 44, the bottom of the cover body 43 is located on the outside of the annular skirt groove 45 and has a plurality of lower hole positions 48, the top of the cover body 43 is arranged with a plurality of upper hole positions 51, the rear end of the cover body 43 is provided with a plurality of rear side holes 50, the bottom of the front end of the cover body 43 is provided with two oblique blind holes 46, the upper part of one of the oblique blind holes 46 is provided with an air nozzle part 47, the inner hole of the air nozzle part 47 is connected to the oblique blind hole 46, and the left side of the cover body 43 is provided with a support foot 49. In order to assist in the forming of the annular skirt groove 45, an annular skirt protrusion is generally set at the corresponding position on the mold core. When the push rod pushes out the valve chamber cover, the annular skirt groove 45 at the bottom of the cover body is tightly fitted with the annular skirt protrusion. The annular skirt protrusion will concentrate the stress and easily cause deformation. When the mold cavity is poured, the solution will impact the annular skirt protrusion. Once the mold is used many times, the mold core with the annular skirt protrusion needs to be replaced frequently. In addition, there is a vertical air nozzle part 47 at the front end of the cover body. The inner hole of the air nozzle part 47 is a vertical through hole, and the oblique blind hole 46 connected to the lower part of the air nozzle part 47 is an oblique hole. Due to the complex overall structure of the air nozzle part 47 and the connected oblique blind hole 46, an ordinary core-pulling structure cannot be produced. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a die-casting mold for producing a valve chamber cover, which adopts a splicing structure of a U-shaped skirt protrusion and a long skirt protrusion, which can effectively disperse stress. In this way, when the push rod pushes out the valve chamber cover, the annular skirt groove at the bottom of the cover body and the U-shaped skirt protrusion and the long skirt protrusion can be better separated, while reducing deformation during the separation process, ensuring product quality, and extending the service life of the mold.

[0005] The technical solution adopted by the present invention to solve its technical problems is: to provide a die-casting mold for producing a valve chamber cover, including an upper mold frame and a lower mold frame, an upper mold core and a lower mold core stacked up and down are installed between the upper mold frame and the lower mold frame, a mold cavity is provided between the upper mold core and the lower mold core, a cover shell forming part is provided in the middle of the upper end of the lower mold core, the upper end of the lower mold core is located in front of the cover shell forming part and a skirt insert is embedded and installed, the upper end of the skirt insert is provided with a long strip skirt protrusion, a U-shaped skirt protrusion is arranged on the lower mold core around the cover shell forming part, the U-shaped skirt protrusion and the long strip skirt protrusion form a ring, a mold foot is installed on each side of the lower end of the lower mold frame, and two molds A lower template is installed at the lower end of the foot, and a plurality of lower hole rods are vertically installed on the lower template. The upper ends of the lower hole rods pass through the lower mold frame and the upper end surface of the skirt insert. A nozzle forming rod and a plurality of upper hole rods are inserted from top to bottom into the upper part of the upper mold frame. The lower ends of the nozzle forming rod and the lower ends of the upper hole rods pass through the lower end surface of the upper mold core. An upper fixed plate is embedded in the upper end of the upper mold frame, and the upper fixed plate is used to press the upper ends of the nozzle forming rod and the upper ends of the upper hole rods. Two inclined top cylinders are arranged side by side under the lower mold frame, and each inclined top cylinder is connected to an inclined rod at one end, and the end of one inclined rod is butted against the lower end of the nozzle forming rod.

[0006] As a supplement to the technical solution described in the present invention, a top plate assembly that slides up and down is installed between the two mold feet, and the top plate assembly is provided with a plurality of ejector rods that are vertically inserted into the mold cavity.

[0007] As a supplement to the technical solution described in the present invention, the rear end of the upper mold frame is equipped with a multi-side hole core pulling device, which includes a core pulling cylinder, a push plate assembly and a side hole rod. The rear end of the upper mold frame has two supports arranged side by side, and a push plate assembly sliding back and forth is installed between the two supports. The front end of the push plate assembly is equipped with multiple side hole rods that pass through the upper mold frame and are inserted into the upper mold core. The free ends of the side hole rods are provided with side hole protrusions, and the rear ends of the two supports are equipped with a mounting plate, and the outer side of the mounting plate is equipped with a core pulling cylinder connected to the push plate assembly; the push plate assembly includes a push plate and a push plate fixing plate, the side hole rod is fixed to the front end of the push plate by the push plate fixing plate, the push plate and the push plate fixing plate are fixed by fasteners, and the piston rod end of the core pulling cylinder is threaded or clamped to the push plate.

[0008] As a supplement to the technical solution described in the present invention, two guide rods are arranged side by side at the front end of the mounting plate, and the push plate assembly is sleeved on the two guide rods. Each guide rod is provided with a circle of annular protrusions, and the push plate assembly is located between the annular protrusions and the mounting plate.

[0009] As a supplement to the technical solution described in the present invention, the upper end of the lower mold frame is located on the left side of the lower mold core and is equipped with a slide that slides horizontally. The slide is installed on the side close to the lower mold core. The lower end of the upper mold frame is provided with an inclined guide column that is obliquely inserted into the slide. The top of the support leg insert is provided with a discharging port. The upper end of the lower mold core is located on the left side of the cover shell forming part and is provided with a centralizing groove. One end of the centralizing groove is connected to an exhaust groove, and one end of the exhaust groove extends to the outside of the lower mold frame. The lower end of the upper mold core is provided with a connecting channel connecting the centralizing groove and the discharging port.

[0010] As a supplement to the technical solution described in the present invention, the vertical cross-section of the material removal opening is a trapezoidal structure, and the height of the material removal opening gradually decreases from the slide seat toward the cover shell forming portion.

[0011] As a supplement to the technical solution described in the present invention, a diverter cone is provided at the upper end of the lower mold frame in the front middle of the lower mold core, a material barrel is installed above the diverter cone in the upper part of the upper mold frame, and a graded flow channel is provided at the upper end of the lower mold core between the diverter cone and the mold cavity.

[0012] As a supplement to the technical solution described in the present invention, the graded flow channel includes two main flow channels formed by bifurcations and multiple branch flow channels. The bottom surface of the main flow channel is arranged in a stepped manner, and the bottom surface of the main flow channel continuously rises from the middle of the cover shell forming part toward the side of the cover shell forming part. Each step of the main flow channel is connected to a branch flow channel, and the upper end of the skirt insert is located in front of the long skirt protrusion and is provided with multiple feed ports connected to the mold cavity, and each feed port is connected one by one to the corresponding branch flow channel.

[0013] As a supplement to the technical solution described in the present invention, the end of the feed port is provided with a slope that rises continuously from front to back, and the width of the feed port gradually increases from front to back.

[0014] As a supplement to the technical solution described in the present invention, the piston rod and the tilting rod of the tilting cylinder are connected by a coupling.

[0015] Beneficial effects: The present invention relates to a die-casting mold for producing a valve chamber cover, which has the following advantages:

[0016] 1. The original integrated annular skirt protrusion is divided into two parts: a U-shaped skirt protrusion and a long strip skirt protrusion. This can effectively disperse the stress. In this way, when the ejector pin ejects the valve chamber cover, the annular skirt groove at the bottom of the cover body and the U-shaped skirt protrusion and the long strip skirt protrusion can be better separated. At the same time, deformation during the separation process is reduced, ensuring product quality and extending the service life of the mold.

[0017] 2. The push plate assembly is located between the annular protrusion and the mounting plate and moves back and forth between the two. By setting an annular protrusion on the guide rod to limit the forward limit position of the push plate assembly, the side hole rod at the front end of the push plate assembly can be accurately inserted into the required position of the mold cavity, ensuring the quality of the rear side hole;

[0018] 3. When the mold cavity is filled with solution, excess solution and gas enter the central tank through the dismantling port. Excess solution accumulates inside the central tank, and excess gas is discharged to the outside of the mold through the exhaust groove, which can effectively reduce problems such as bubbles. In addition, the dismantling port filled with solution will form a dismantling part. When the mold is opened, the dismantling port on the top of the support leg insert will be separated from the dismantling part on the side of the product. Since the dismantling part has a trapezoidal block structure, the end connected to the dismantling part and the product is thinner, and the other end is thicker. The dismantling part can be separated from the product by simply breaking it with force, which is simple and convenient to operate.

[0019] 4. Through the cooperation of the stepped main channel and the branch flow channels of each step of the main channel, the solution is loaded into each part of the mold cavity in stages, ensuring the molding quality of each part of the product. The end of the feed port is provided with a slope that rises continuously from front to back. The slope slows down the speed of the solution entering the mold cavity and reduces the direct impact of the solution on the long skirt protrusion, reducing the damage to the long skirt protrusion. The width of the feed port gradually increases from front to back, which can effectively improve the efficiency of the solution entering the mold cavity.

[0020] 5. The inclined ejector cylinder controls the inclined rod to be inserted into the mold cavity from bottom to top. The end of one of the inclined rods is docked with the lower end of the air nozzle forming rod. The end of the inclined rod docked with the lower end of the air nozzle forming rod is used to assist in forming the inclined blind hole. The lower end of the air nozzle forming rod is used to assist in forming the air nozzle part, and the overall structure of the air nozzle part and the connected inclined blind hole can be produced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a cross-sectional view of the present invention in the left direction;

[0023] Figure 3 This is a cross-sectional view of the tilting cylinder and tilting rod of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the multi-side hole core pulling device of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the upper mold frame and the upper mold core of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the lower mold frame and the lower mold core of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the lower mold core of the present invention;

[0028] Figure 8 1 is a schematic structural diagram of the skirt panel of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the processed product of the present invention;

[0030] Figure 10 It is a schematic diagram of the processed product of the present invention at different angles.

[0031] Illustration: 1. Upper mold frame, 2. Upper mold core, 3. Lower mold core, 4. Lower mold frame, 5. Upper fixed plate, 6. Upper hole rod, 7. Barrel, 8. Diverter cone, 9. Ejector plate assembly, 10. Ejector rod, 11. Inclined ejector cylinder, 12. Core-pulling cylinder, 13. Skirt insert, 14. Lower mold plate, 15. Lower hole rod, 16. Hole rod fixing plate, 17. Inclined rod, 18. Coupling, 19. Die foot, 20. Cover molding part, 21. Air nozzle molding rod, 22. Support, 23. Mounting plate, 24. Push plate assembly, 25. Guide rod, 26. Annular protrusion, 27. Side hole rod, 28. Side hole protrusion, 29. Long strip skirt protrusion, 30. U-shaped skirt protrusion, 31. Inclined guide column, 32. Slide seat, 33. Support foot insert, 34. Dismantling port, 35. Feed port, 36. Concentrating groove, 37. Exhaust groove, 38. Connecting channel, 39. Graded flow channel, 40. Main flow channel, 41. Branch flow channel, 42. Slope, 43. Cover body, 44. Chamber, 45. Annular skirt groove, 46. Oblique blind hole, 47. Air nozzle, 48. Lower hole position, 49. Support foot, 50. Rear side hole, 51. Upper hole position. DETAILED DESCRIPTION

[0032] Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only used to illustrate the present invention and are not used in limiting the scope of the present invention.In addition, should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall equally within the scope limited by the appended claims of the application.

[0033] An embodiment of the present invention relates to a die-casting mold for producing a valve chamber cover. Figure 1 It is a basic view in the main viewing direction. The directional qualifiers such as front, back, left, right, up and down are used to describe the position of the mold based on its usage status. The left and right correspond to the two sides in the length direction of the lower mold frame 4, and the front and rear correspond to the two sides in the width direction of the lower mold frame 4.

[0034] like Figures 1-8As shown, the die-casting mold includes an upper mold frame 1 and a lower mold frame 4, an upper mold core 2 and a lower mold core 3 stacked up and down are installed between the upper mold frame 1 and the lower mold frame 4, a mold cavity is provided between the upper mold core 2 and the lower mold core 3, a cover shell forming part 20 is provided in the middle of the upper end of the lower mold core 3, the upper end of the lower mold core 3 is located in front of the cover shell forming part 20 and is embedded with a skirt insert 13, the upper end of the skirt insert 13 is provided with a long strip skirt protrusion 29, a U-shaped skirt protrusion 30 is arranged around the cover shell forming part 20 on the lower mold core 3, the U-shaped skirt protrusion 30 and the long strip skirt protrusion 29 form a ring, a mold foot 19 is installed on each side of the lower end of the lower mold frame 4, and the lower end of the two mold feet 19 is installed with a lower template 14, A plurality of lower hole rods 15 are vertically installed on the lower mold plate 14, and the upper ends of the lower hole rods 15 pass through the lower mold frame 4 and the upper end surface of the skirt insert 13. A nozzle forming rod 21 and a plurality of upper hole rods 6 are inserted from top to bottom into the upper part of the upper mold frame 1. The lower ends of the nozzle forming rod 21 and the lower ends of the upper hole rods 6 pass through the lower end surface of the upper mold core 2. An upper fixed plate 5 is embedded in the upper end of the upper mold frame 1, and the upper fixed plate 5 is used to press the upper ends of the nozzle forming rod 21 and the upper ends of the upper hole rods 6. Two inclined top cylinders 11 are arranged side by side below the lower mold frame 4, and each inclined top cylinder 11 is connected to an inclined rod 17 at one end, and the end of one inclined rod 17 is docked with the lower end of the nozzle forming rod 21.

[0035] like Figure 1 As shown, a top plate assembly 9 that slides up and down is installed between the two mold feet 19. The top plate assembly 9 is provided with multiple ejector rods 10 that are vertically inserted into the mold cavity; the ejector rods 10 are controlled by the top plate assembly 9 to eject the molded product.

[0036] The present invention divides the originally integrated annular skirt protrusion into two parts, namely, a U-shaped skirt protrusion 30 and a long strip skirt protrusion 29, which can effectively disperse stress. In this way, when the ejector rod pushes out the valve chamber cover, the annular skirt groove at the bottom of the cover body and the U-shaped skirt protrusion 30 and the long strip skirt protrusion 29 can be better separated, while reducing deformation during the separation process, ensuring product quality and extending the service life of the mold.

[0037] like Figure 3 As shown, the piston rod of the tilting oil cylinder 11 is connected to the tilting rod 17 by a coupling 18. The connection through the coupling 18 facilitates the disassembly, assembly and replacement of the tilting rod 17 in the later stage.

[0038] like Figure 3As shown, the upper end of the lower hole rod 15 passes through the lower template 14, the lower mold frame 4 and the lower mold core 3 from bottom to top and is inserted into the mold cavity. A hole rod fixing plate 16 is embedded in the bottom of the lower template 14, and the lower end of the lower hole rod 15 is supported by the hole rod fixing plate 16. Fasteners are used to fix the lower template 14 and the hole rod fixing plate 16.

[0039] like Figure 4 and Figure 5 As shown, the rear end of the upper mold frame 1 is equipped with a multi-side hole core pulling device, which includes a core pulling cylinder 12, a push plate assembly 24 and a side hole rod 27. The rear end of the upper mold frame 1 is provided with two supports 22 arranged side by side, and a push plate assembly 24 is installed between the two supports 22 to slide back and forth. The front end of the push plate assembly 24 is equipped with a plurality of side hole rods 27 that pass through the upper mold frame 1 and are inserted into the upper mold core 2. The free end of the side hole rod 27 is provided with a side hole protrusion 28. The rear ends of the two supports 22 are equipped with a mounting plate 23. The mounting plate 23 is installed A core-pulling cylinder 12 connected to a push plate assembly 24 is installed on the outside of the plate 23; the push plate assembly 24 includes a push plate and a push plate fixing plate, the side hole rod 27 is fixed to the front end of the push plate through the push plate fixing plate, the push plate and the push plate fixing plate are fixed with fasteners, and the piston rod end of the core-pulling cylinder 12 is threaded or clamped to the push plate; the push plate assembly 24 and multiple side hole rods 27 are controlled by the core-pulling cylinder 12 to slide back and forth together, and the side hole protrusion 28 at the free end of the side hole rod 27 is used to assist in the formation of the rear side hole 50.

[0040] like Figure 4 As shown, two guide rods 25 are arranged side by side at the front end of the mounting plate 23, and the push plate assembly 24 is sleeved on the two guide rods 25 and slides back and forth along the two guide rods 25. Each guide rod 25 is provided with a circle of annular protrusions 26. The push plate assembly 24 is located between the annular protrusions 26 and the mounting plate 23 and moves back and forth between the two. By providing an annular protrusion 26 on the guide rod 25 to limit the forward limit position of the push plate assembly 24, the side hole rod 27 at the front end of the push plate assembly 24 can be accurately inserted into the required position of the mold cavity to ensure the quality of the rear side hole 50.

[0041] like Figure 5 and Figure 6As shown, the upper end of the lower mold frame 4 is located on the left side of the lower mold core 3 and is equipped with a slide seat 32 for horizontal sliding. The slide seat 32 is installed on the side close to the lower mold core 3. A support leg insert 33 is installed. The lower end of the upper mold frame 1 is provided with an inclined guide column 31 which is obliquely inserted into the slide seat 32. The top of the support leg insert 33 is provided with a discharge port 34. The vertical cross-section of the discharge port 34 is a trapezoidal structure. The height of the discharge port 34 gradually decreases from the slide seat 32 toward the cover shell forming part 20. The upper end of the lower mold core 3 is located on the left side of the cover shell forming part 20 and is provided with a central groove 36. One end of the central groove 36 is connected to an exhaust groove 37. One end of the exhaust groove 37 extends to the outside of the lower mold frame 4. A connecting channel 38 connecting the central groove 36 and the discharge port 34 is provided at the lower end of the mold core 2; when the interior of the mold cavity is filled with the solution, the excess solution and gas enter the central groove 36 through the discharge port 34, and the excess solution accumulates inside the central groove 36, and the excess gas is discharged to the outside of the mold through the exhaust groove 37, which can effectively reduce problems such as bubbles, and the discharge port 34 filled with solution will form a discharge part. When the mold is opened, the discharge port 34 on the top of the support leg insert 33 will be separated from the discharge part on the side of the product. Since the discharge part has a trapezoidal block structure, the end connected to the discharge part and the product is thinner, and the other end is thicker. The discharge part can be separated from the product by bending it hard, and the operation is simple and convenient.

[0042] like Figure 5 and Figure 6 As shown, the upper end of the lower mold frame 4 is located in the front middle of the lower mold core 3 and is provided with a diverter cone 8, the upper part of the upper mold frame 1 is located above the diverter cone 8 and is installed with a barrel 7, the upper end of the lower mold core 3 is located between the diverter cone 8 and the mold cavity and is provided with a grading flow channel 39; after the diverter cone 8 diverts the flow, it flows into the mold cavity more evenly through the grading flow channel 39.

[0043] As a preferred solution of the classification flow channel 39, Figure 6 and Figure 7As shown, the graded flow channel 39 includes two main flow channels 40 formed by bifurcations and a plurality of branch flow channels 41. The bottom surface of the main flow channel 40 is arranged in a stepped manner. The bottom surface of the main flow channel 40 is continuously raised from the middle of the cover molding portion 20 to the side of the cover molding portion 20. Each step of the main flow channel 40 is connected to a branch flow channel 41. The upper end of the skirt insert 13 is located in front of the long skirt protrusion 29 and is provided with a plurality of feed ports 35 connected to the mold cavity. Each feed port 35 is connected to the corresponding branch flow channel 41 one by one. Then, through the cooperation of the stepped main channel 40 and the branch channel 41 of each step of the main channel 40, the solution can be loaded into each part of the mold cavity in a graded manner to ensure the molding quality of each part of the product. The end of the feed port 35 is provided with a slope 42 that continuously rises from front to back. The slope 42 slows down the speed of the solution entering the mold cavity, and at the same time reduces the direct impact of the solution on the long skirt protrusion 29, thereby reducing the damage to the long skirt protrusion 29. The width of the feed port 35 gradually increases from front to back, which can effectively improve the efficiency of the solution entering the mold cavity.

[0044] When the valve chamber cover is needed, the core-pulling cylinder 12 is used to control the push plate assembly 24 and the multiple side hole rods 27 to slide forward together, and the side hole protrusion 28 at the free end of the side hole rod 27 passes through the upper mold core 2. The side hole protrusion 28 at the free end of the side hole rod 27 is used to assist in the formation of the rear side hole 50. Then the upper mold frame 1 and the lower mold frame 4 as well as the upper mold core 2 and the lower mold core 3 are closed, and the upper mold core 2 and the lower mold core 3 are spliced together to form a mold cavity. The nozzle forming rod 21 and the multiple upper hole rods 6 are inserted into the mold cavity from top to bottom, and the slide seat 32 is controlled to slide to the right by the inclined guide column 31. The movement will drive the support leg insert 33 to move together. One end of the support leg insert 33 is inserted into the mold cavity horizontally. The support leg insert 33 is used to assist in forming the support leg 49. The cover forming part 20 at the upper end of the lower mold core 3 is used to assist in forming the cover body 43. The lower end of the nozzle forming rod 21 is used to assist in forming the nozzle part 47. The lower end of the upper hole position rod 6 is used to assist in forming the upper hole position 51. When the nozzle forming rod 21 reaches the corresponding position, the inclined top cylinder 11 is started. The two inclined top cylinders 11 respectively control the two inclined rods 17 to tilt from bottom to top and insert them into the mold cavity. One of the inclined rods 17 is tilted upward. The end portion is butted against the lower end of the nozzle forming rod 21, and the end portion of the oblique rod 17 butted against the lower end of the nozzle forming rod 21 is used to assist in forming the oblique blind hole 46. The U-shaped skirt protrusion 30 at the upper end of the lower mold core 3 is spliced with the long strip skirt protrusion 29 at the upper end of the skirt insert 13 to assist in forming the annular skirt groove 45. The upper end of the lower hole position rod 15 passes through the lower mold frame 4 and passes through the upper end face of the skirt insert 13. The upper end of the lower hole position rod 15 is used to assist in forming the lower hole position 48. Then, the molten metal solution is injected into the mold cavity, the mold cavity is filled, and then the die casting machine is used to form the lower hole position 48. The mold is kept under pressure inside. After the product is formed, the mold is opened, the upper mold frame 1 and the upper mold core 2 move up, and the inclined guide column 31 controls the slide 32 to slide to the left so that the support leg insert 33 is separated from the support leg 49. Then, the two inclined ejector cylinders 11 respectively control the two inclined rods 17 to retract into the lower mold core 3, and the ends of the inclined rods 17 are separated from the inclined blind holes 46. Then, the core-pulling cylinder 12 controls the push plate assembly 24 and multiple side hole rods 27 to slide backward, and the side hole protrusion 28 at the free end of the side hole rod 27 is separated from the rear side hole 50. Then, the ejector plate assembly 9 is started, and the ejector rod 10 ejects the product from the mold cavity.

[0045] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0046] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0048] The above is a detailed introduction to a die-casting mold for producing a valve chamber cover provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A die-casting mold for producing a valve chamber cover, comprising an upper mold frame (1) and a lower mold frame (4), wherein an upper mold core (2) and a lower mold core (3) stacked one above the other are installed between the upper mold frame (1) and the lower mold frame (4), and a mold cavity is provided between the upper mold core (2) and the lower mold core (3), characterized in that: The middle part of the upper end of the lower mold core (3) is provided with a cover forming part (20), the upper end of the lower mold core (3) is located in front of the cover forming part (20) and is embedded with a skirt insert (13), the upper end of the skirt insert (13) is provided with a long skirt protrusion (29), and a U-shaped skirt protrusion (30) is arranged around the cover forming part (20) on the lower mold core (3), and the U-shaped skirt protrusion (30) and the long skirt protrusion (29) form a ring shape. A mold foot (19) is installed on each side of the lower end of the lower mold frame (4), and the lower ends of the two mold feet (19) are installed with a lower mold plate (14), and a plurality of lower hole rods (15) are vertically installed on the lower mold plate (14), and the upper ends of the lower hole rods (15) pass through the lower mold frame. (4) and passes through the upper end face of the skirt insert (13), and a nozzle forming rod (21) and a plurality of upper hole rods (6) are inserted from top to bottom into the upper part of the upper mold frame (1), and the lower end of the nozzle forming rod (21) and the lower end of the upper hole rod (6) pass through the lower end face of the upper mold core (2), and an upper fixing plate (5) is embedded and installed on the upper end of the upper mold frame (1), and the upper fixing plate (5) is used to press the upper end of the nozzle forming rod (21) and the upper end of the upper hole rod (6), and two inclined top cylinders (11) are arranged in parallel below the lower mold frame (4), and one end of each inclined top cylinder (11) is connected to an inclined rod (17), and the end of one inclined rod (17) is butted against the lower end of the nozzle forming rod (21).

2. A die-casting mold for producing a valve chamber cover according to claim 1, characterized in that: A top plate assembly (9) that slides up and down is installed between the two mold feet (19), and a plurality of top rods (10) that are vertically inserted into the mold cavity are provided on the top plate assembly (9).

3. The die-casting mold for producing a valve cover according to claim 1, characterized in that: The rear end of the upper mold frame (1) is equipped with a multi-side hole core pulling device, which includes a core pulling cylinder (12), a push plate assembly (24) and a side hole rod (27). The rear end of the upper mold frame (1) is equipped with two supports (22) arranged side by side, and a push plate assembly (24) is installed between the two supports (22) to slide back and forth. The front end of the push plate assembly (24) is equipped with a plurality of side hole rods (27) that pass through the upper mold frame (1) and are inserted into the upper mold core (2). The free end of the side hole rod (27) is provided with a side hole protrusion (28). The rear ends of the two supports (22) are equipped with a mounting plate (23), and the outer side of the mounting plate (23) is equipped with a core pulling cylinder (12) connected to the push plate assembly (24).

4. The die-casting mold for producing a valve cover according to claim 3, characterized in that: Two guide rods (25) are arranged side by side at the front end of the mounting plate (23), and the push plate assembly (24) is sleeved on the two guide rods (25). Each guide rod (25) is provided with a circle of annular protrusions (26), and the push plate assembly (24) is located between the annular protrusions (26) and the mounting plate (23).

5. The die-casting mold for producing a valve cover according to claim 1, characterized in that: The upper end of the lower mold frame (4) is located on the left side of the lower mold core (3) and is equipped with a slide (32) that slides laterally. The slide (32) is installed on the side close to the lower mold core (3). The lower end of the upper mold frame (1) is provided with an inclined guide column (31) that is obliquely inserted into the slide (32). The top of the support leg insert (33) is provided with a discharging port (34). The upper end of the lower mold core (3) is located on the left side of the cover forming part (20) and is provided with a central groove (36). One end of the central groove (36) is connected to an exhaust groove (37). One end of the exhaust groove (37) extends to the outside of the lower mold frame (4). The lower end of the upper mold core (2) is provided with a connecting channel (38) connecting the central groove (36) and the discharging port (34).

6. The die-casting mold for producing a valve cover according to claim 5, characterized in that: The vertical cross-section of the material removal opening (34) is a trapezoidal structure, and the height of the material removal opening (34) gradually decreases from the slide seat (32) toward the cover shell forming portion (20).

7. The die-casting mold for producing a valve operating housing according to claim 1, characterized in that: The upper end of the lower mold frame (4) is located in the middle of the front of the lower mold core (3) and is provided with a diverter cone (8); the upper part of the upper mold frame (1) is provided with a barrel (7) above the diverter cone (8); the upper end of the lower mold core (3) is located between the diverter cone (8) and the mold cavity and is provided with a graded flow channel (39).

8. The die-casting mold for producing a valve operating housing according to claim 7, characterized in that: The grading flow channel (39) includes two main flow channels (40) formed by bifurcation and a plurality of branch flow channels (41). The bottom surface of the main flow channel (40) is arranged in a stepped manner. The bottom surface of the main flow channel (40) is continuously raised from the middle of the cover shell forming portion (20) toward the side of the cover shell forming portion (20). Each step of the main flow channel (40) is connected to a branch flow channel (41). The upper end of the skirt insert (13) is located in front of the long skirt protrusion (29) and is provided with a plurality of feed ports (35) connected to the mold cavity. Each feed port (35) is connected to the corresponding branch flow channel (41) one by one.

9. The die-casting mold for producing a valve operating housing according to claim 8, characterized in that: The end of the feed opening (35) is provided with a slope (42) that rises continuously from the front to the back, and the width of the feed opening (35) gradually increases from the front to the back.

10. The die-casting mold for producing a valve operating housing according to claim 1, characterized in that: The piston rod of the tilting oil cylinder (11) and the tilting rod (17) are connected by a coupling (18).

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