Die-casting die for producing valve chamber housing

Abstract

The die-casting die for producing the valve chamber housing comprises an upper die frame and a lower die frame, an upper die core and a lower die core are installed between the upper die frame and the lower die frame, a housing forming part is arranged in the middle of the upper end of the lower die core, and a skirt edge insert is installed at the position, located in front of the housing forming part, of the upper end of the lower die core in an embedded mode. A long-strip-shaped skirt edge protrusion is arranged at the upper end of the skirt edge insert, a U-shaped skirt edge protrusion is arranged on the lower die core around the housing forming part, the U-shaped skirt edge protrusion and the long-strip-shaped skirt edge protrusion define a ring, the two sides of the lower end of the lower die frame are each provided with a die foot, the lower ends of the two die feet are provided with a lower die plate, and a plurality of lower hole position rods are vertically installed on the lower die plate. The upper end of the lower hole position rod penetrates through the lower die frame and the upper end face of the skirt edge insert. The splicing structure of the U-shaped skirt edge protrusions and the long-strip-shaped skirt edge protrusions is adopted, stress can be effectively dispersed, and meanwhile when the valve chamber housing is ejected out, the annular skirt edge groove in the bottom of the housing body can be well separated from the U-shaped skirt edge protrusions and the long-strip-shaped skirt edge protrusions.

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 automobile engine is a device that provides power for the car. It is the heart of the car and determines the car's power, economy, stability and environmental protection. According to the different power sources, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors and hybrid power, etc. The engine is equipped with a valve chamber structure, which is usually called the camshaft chamber, or the oil chamber of the cylinder head.

[0003] The valve cover is an important component of the valve structure. Fig. 9 and Fig.10 As shown, the valve chamber cover comprises 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 opened 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 with 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 the forming of the annular skirt groove 45, an annular skirt protrusion is generally set at a 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, a long strip skirt protrusion is provided on the upper end of the skirt insert, a U-shaped skirt protrusion is arranged around the cover shell forming part on the lower mold core, 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, and the upper ends of the lower hole rods penetrate the lower mold frame and the upper end surface of the skirt insert, and 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, and the lower ends of the nozzle forming rod and the lower ends of the upper hole rods penetrate the lower end surface of the upper mold core, and an upper fixing plate is embedded and installed on the upper end of the upper mold frame, and the upper fixing plate is used to press the upper ends of the nozzle forming rod and the upper ends of the upper hole rods, and two inclined top cylinders are arranged in parallel below the lower mold frame, and each inclined top cylinder is connected to an inclined rod at one end, and the end of one of the inclined rods is butt-jointed with 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, a multi-side hole core pulling device is installed at the rear end of the upper mold frame, and the multi-side hole core pulling device includes a core pulling cylinder, a push plate assembly and a side hole rod. Two supports are arranged side by side at the rear end of the upper mold frame, and a push plate assembly that slides back and forth is installed between the two supports. A plurality of side hole rods that pass through the upper mold frame and are inserted into the upper mold core are installed at the front end of the push plate assembly, and the free ends of the side hole rods are provided with side hole protrusions. A mounting plate is installed at the rear ends of the two supports, and a core pulling cylinder connected to the push plate assembly is installed on the outer side of the mounting plate; 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 through 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 and the push plate are threaded or clamped.

[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, 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 seat that slides horizontally, and the slide seat is installed with a support leg insert close to the side of 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 seat, and 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 outside the lower mold frame, and 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 sliding 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 and multiple branch flow channels formed by bifurcations. The bottom surface of the main flow channel is arranged in a stepped shape, and the bottom surface of the main flow channel is continuously raised from the middle of the cover shell molding part toward the side of the cover shell molding 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 arranged with multiple feed ports connected to the mold cavity, and each feed port is connected to the corresponding branch flow channel one by one.

[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 inclined 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: 1. The original integrated annular skirt protrusion is divided into two parts, namely, a U-shaped skirt protrusion and a long strip skirt protrusion, which can effectively disperse the stress. In this way, when the ejector 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 strip skirt protrusion can be better separated, while reducing deformation during the separation process, ensuring product quality and extending the service life of the mold; 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 to ensure the quality of the rear side hole; 3. When the cavity is filled with solution, the excess solution and gas enter the central tank through the dismantling port. The excess solution accumulates inside the central tank, and the 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 is 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 bending it hard, which is simple and convenient to operate. 4. Through the cooperation of the stepped main channel and the branch channels of each step of the main channel, the solution is loaded into each part of the mold cavity in stages to ensure the molding quality of each part of the product. The end of the feed port is provided with a slope that is continuously raised from front to back. The slope slows down the speed of the solution entering the mold cavity and reduces the impact of the solution directly on the long skirt protrusion, thereby 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. 5. The inclined cylinder controls the inclined rod to be inserted into the mold cavity from bottom to top, and the end of one of the inclined rods is connected with the lower end of the air nozzle forming rod. The end of the inclined rod connected with the lower end of the air nozzle forming rod is used to assist in forming the inclined blind hole, and the lower end of the air nozzle forming rod is used to assist in forming the air nozzle part, so that the air nozzle part and the connected inclined blind hole overall structure can be produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the present invention in the left-side viewing direction; Figure 3 It is a cross-sectional view of the tilting cylinder and the tilting rod of the present invention; Figure 4 It is a schematic structural diagram of the multi-side hole core pulling device of the present invention; Figure 5 It is a structural schematic diagram of the upper mold frame and the upper mold core of the present invention; Figure 6 It is a structural schematic diagram of the lower mold frame and the lower mold core of the present invention; Figure 7 It is a structural schematic diagram of the lower mold core of the present invention; Figure 8 is a schematic structural diagram of the skirt panel block of the present invention; Fig. 9 It is a structural schematic diagram of the processed product of the present invention; Fig.10 It is a schematic diagram of the processed product of the present invention at different angles.

[0017] Illustration: 1. Upper mold frame, 2. Upper mold core, 3. Lower mold core, 4. Lower mold frame, 5. Upper fixing 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. Shell 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. Oblique guide column, 32. Sliding seat, 33. Support foot insert, 34. Dismantling port, 35. Feed port, 36. Centralizing 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

[0018] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it 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 within the scope limited by the appended claims of the application equally.

[0019] An embodiment of the present invention relates to a die-casting mold for producing a valve chamber cover. Figure 1 It is the 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.

[0020] like Figure 1-Figure 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, a long strip skirt protrusion 29 is provided on the upper end of the skirt insert 13, a U-shaped skirt protrusion 30 is arranged around the cover shell forming part 20 on the lower mold core 3, and 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 ends of the two mold feet 19 are installed with a lower mold plate 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, and the lower ends of the nozzle forming rod 21 and the upper hole rods 6 pass through the lower end surface of the upper mold core 2. 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 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 butt-jointed with the lower end of the nozzle forming rod 21.

[0021] like Figure 1 As shown, a top plate assembly 9 that slides up and down is installed between the two mold feet 19, and the top plate assembly 9 is provided with a plurality of 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.

[0022] 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 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 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.

[0023] like Figure 3 As shown, the piston rod of the tilting jack cylinder 11 is connected to the tilting rod 17 by a coupling 18, and the connection through the coupling 18 facilitates the disassembly, assembly and replacement of the tilting rod 17 in the later stage.

[0024] 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. The lower template 14 and the hole rod fixing plate 16 are fixed with fasteners.

[0025] 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 that slides forward and backward is installed between the two supports 22. 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 outer side 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 forward and backward together, and the side hole protrusion 28 at the free end of the side hole rod 27 is used to assist in the forming of the rear side hole 50.

[0026] 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 forward and backward 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 the annular protrusions 26 on the guide rods 25 to limit the forward extreme 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.

[0027] 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 transverse sliding. The slide seat 32 is installed with a support leg insert 33 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 which is obliquely inserted into the slide seat 32. The top of the support leg insert 33 is provided with a discharging port 34. The vertical cross-section of the discharging port 34 is a trapezoidal structure. The height of the discharging 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 centralizing groove 36. One end of the centralizing 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 is filled with solution to form a discharge part. When the mold is opened, the discharge port 34 at 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 with force, and the operation is simple and convenient.

[0028] like Figure 5 and Figure 6 As shown, the upper end of the lower mold frame 4 is provided with a diverter cone 8 in the front middle of the lower mold core 3, the upper part of the upper mold frame 1 is provided with a barrel 7 above the diverter cone 8, and the upper end of the lower mold core 3 is provided with a grading flow channel 39 between the diverter cone 8 and the mold cavity; after the diverter cone 8 diverts the flow, it flows into the mold cavity more evenly through the grading flow channel 39.

[0029] 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 shell forming portion 20 to the side of the 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 strip skirt protrusion 29 and is arranged 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 channels 41 of each step of the main channel 40, the solution can be loaded into each part of the mold cavity in stages 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 is continuously raised 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 impact force of the solution directly 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.

[0030] When the valve chamber cover is needed, the core-pulling cylinder 12 is first 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 molding 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 molding 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 rightward 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 shell forming part 20 at the upper end of the lower mold core 3 is used to assist in forming the cover shell 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 be inserted into the mold cavity from bottom to top. One of the inclined rods 17 The end portion is butted with the lower end of the nozzle forming rod 21, and the end of the oblique rod 17 butted with 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 penetrates the lower mold frame 4 and passes through the upper end surface 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, and then the molten metal solution is injected into the mold cavity to fill the mold cavity, and then the die casting machine is used to form the mold. The mold is kept under pressure. 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 seat 32 to slide to the left so that the support leg insert 33 is separated from the support leg 49. Then, the two inclined push 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 top plate assembly 9 is started, and the push rod 10 ejects the product from the mold cavity.

[0031] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 devices or elements 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 contours of each component itself.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] 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. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0034] 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), 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), and the characteristics are: A shell forming part (20) is provided in the middle of the upper end of the lower mold core (3). A skirt insert (13) is embedded and installed in the upper end of the lower mold core (3) in front of the shell forming part (20). A long strip skirt protrusion (29) is provided at the upper end of the skirt insert (13). A U-shaped skirt protrusion (30) is arranged around the 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). A lower mold plate (14) is installed at the lower ends of the two mold feet (19). A plurality of lower hole rods (15) are vertically installed on the lower mold plate (14). The upper ends of the lower hole rods (15) penetrate the lower mold frame. (4) and passes through the upper end surface of the skirt insert (13), a nozzle forming rod (21) and a plurality of upper hole rods (6) are inserted into the upper part of the upper mold frame (1) from top to bottom, the lower end of the nozzle forming rod (21) and the lower end of the upper hole rod (6) pass through the lower end surface of the upper mold core (2), an upper fixing plate (5) is embedded and installed at 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 of the inclined rods (17) is butt-jointed with 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 arranged on the top plate assembly (9).

3. A die-casting mold for producing a valve chamber 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. A die-casting mold for producing a valve chamber 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 chamber 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 seat (32) that slides laterally. The slide seat (32) is installed on the side close to the lower mold core (3) with a support leg insert (33). The lower end of the upper mold frame (1) is provided with an inclined guide column (31) that is obliquely inserted into the slide seat (32). The top of the support leg insert (33) is provided with a material removal opening (34). 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 outside the lower mold frame (4). The lower end of the upper mold core (2) is provided with a connecting channel (38) that connects the central groove (36) and the exhaust opening (34).

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

8. A die-casting mold for producing a valve chamber cover 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 molding portion (20) toward the side of the cover shell 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 a corresponding branch flow channel (41) one by one.

9. A die-casting mold for producing a valve chamber cover 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 chamber cover according to claim 1, characterized in that: The piston rod of the tilting jack cylinder (11) and the tilting rod (17) are connected by a coupling (18).

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