Common mold for PP inspection well multi-specification products

Abstract

The invention relates to the technical field of inspection well manufacturing, in particular to a common mold for PP inspection well multi-specification products. The mold comprises a cavity defined by a fixed mold plate and a movable mold plate, a fixed mold core, a movable mold core, a movable mold sliding block, a branch pipe core and a branch pipe sliding block plug. The fixed mold core comprises a dredge well fixed mold core and a launder well fixed mold core; the movable mold core comprises a dredge well movable mold core and a launder well movable mold core; the branch pipe core comprises a four-way fixed / mold core, a three-way fixed / movable mold core, an elbow fixed / movable mold core, an initial fixed / movable mold core and a branch pipe reducing interchange mold core; the movable mold sliding block is detachably installed on the movable mold plate and located on the periphery of the cavity, and an air cylinder is installed between the movable mold core and the movable mold plate. The technical problems that in the prior art, an inspection well mold is single in function and cannot meet the production requirements of multi-specification inspection wells, so that the production cost of the inspection wells is increased, and the production efficiency is reduced are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of inspection well manufacturing technology, and in particular to a common mold for PP inspection well products of multiple specifications. Background Technology

[0002] PP inspection wells are manufactured using polypropylene (PP) as the main raw material. They are commonly used in drainage and sewage pipe networks, installed at pipe intersections, bends, changes in pipe size or slope, and on straight pipe sections at certain intervals, facilitating regular inspection, cleaning, and maintenance. PP inspection wells can be classified by their base structure into sedimentation wells and flow channel wells, and by their external shape into starting wells, straight-through wells, elbow wells, tee wells, and four-way wells. Existing molds used for producing PP inspection wells have complex structures and are difficult to demold, resulting in low production efficiency.

[0003] To address the aforementioned issues, patent document CN104441494B discloses a plastic inspection well production mold. This mold includes an upper mold, a lower mold, and a base. The upper mold is placed on the lower mold, and the lower mold is placed on the base. The upper and lower molds together form a molding cavity. The upper mold has a vertically oriented upper well cavity in its center and a horizontally oriented upper tube cavity communicating with the upper well cavity. The lower mold has alternating circumferentially arranged inclined grooves and columns. A slider is provided on the inclined groove, with a first and second groove in the horizontal direction and a third groove in the vertical direction. The first groove of one slider and the second groove of another slider together form a lower tube cavity. The upper and lower tube cavities together form a tube cavity, which is configured such that a matching side core puller can be placed on the column. The third groove of one slider and the third groove of at least one other slider together form the lower well cavity. As can be seen, the mold uses columns to ensure the strength of the lower mold. During demolding, after removing the upper mold, the side core is pulled out along the upper end face of the column, and then the slider is taken out from the inclined slide groove, which can eject the product and improve demolding efficiency.

[0004] However, although PP manholes have a certain similarity in overall shape, their specifications are diverse in order to meet different engineering scenarios and drainage needs. The molds mentioned above cannot meet the production needs of manholes of various specifications. It is necessary to equip each manhole with a corresponding mold, resulting in a large number of molds and a significant increase in production costs. During the production process, it is necessary to change the mold according to the different specifications of the manhole, and each mold change requires a series of debugging and preparation work, which greatly reduces the production efficiency of manholes. Summary of the Invention

[0005] This invention provides a common mold for PP inspection wells with multiple specifications, in order to solve the technical problem that the existing inspection well molds have only one function and cannot meet the production needs of inspection wells with multiple specifications, resulting in increased production costs and reduced production efficiency.

[0006] To solve the above problems, the common mold for multi-specification PP inspection wells provided by this invention adopts the following technical solution:

[0007] A common mold for multi-specification PP inspection well products includes a cavity formed by a fixed mold plate and a movable mold plate, and also includes a fixed mold core, a movable mold core, a movable mold slider, a branch pipe core and a branch pipe slider plug. The fixed mold plate and the movable mold plate have mounting positions for installing the branch pipe core that fit together vertically. The fixed model core includes a sedimentation well fixed model core and a flow channel well fixed model core; The moving model core includes a sedimentation well moving model core and a flow channel well moving model core; The branch pipe core includes a four-way fixed core, a three-way fixed core, an elbow fixed core, a starting fixed core, and a branch pipe diameter changing interchangeable core, a four-way moving core, a three-way moving core, an elbow moving core, and a starting moving core; The branch pipe slider plug includes a branch pipe fixed mold slider plug and a branch pipe moving mold slider plug; The moving mold slider is detachably mounted on the moving mold plate and located on the outer periphery of the cavity. The bottom of the moving mold slider is detachably connected to the top of the reset pull rod mounted on the ejector pin base plate. The moving model core is provided with a cylinder mounting plate for mounting cylinders. A top plate is provided between the cylinder mounting plate and the fixed model core. The moving template is provided with a cylinder quick-change base for mounting cylinder pistons. The cylinder quick-change base has an air inlet channel connecting the air inlet of the cylinder piston to the air inlet pipe on the moving template, and an air outlet channel connecting the air outlet of the cylinder piston to the air outlet pipe on the moving template.

[0008] The beneficial effects of the common mold for multi-specification PP inspection wells provided by this invention are: 1. By decomposing the core used in the mold for producing sedimentation wells and flow channels into independent modules such as fixed mold core, moving mold core, branch pipe core, and branch pipe plug, a set of molds can be used to flexibly produce sedimentation wells and flow channels with different specifications of branch pipes through quick replacement and combination of each independent module. This effectively improves the adaptability of the mold and the production efficiency of sedimentation wells and flow channels, while reducing the mold cost for manufacturing sedimentation wells and flow channels. 2. By detachably mounting the moving mold slider on the moving platen, during mold disassembly, the moving mold slider can be separated from the moving platen from the fixed mold parting surface. After the moving mold slider is ejected by the reset pull rod, it can be removed from the reset pull rod to replace the new moving mold slider. The disassembly process is simple and does not require flipping the mold, saving time and eliminating the operational risks associated with traditional mold disassembly that require flipping the mold. 3. By installing a cylinder mounting plate on the moving mold core and a cylinder quick-change base on the moving template, the cylinder piston is installed on the cylinder quick-change base, and a top plate is set between the cylinder mounting plate and the fixed mold core. Air can be supplied to the cylinder through the air supply equipment to drive the piston rod of the cylinder to push the top plate upward, thereby assisting the product demolding. By configuring a matching cylinder on the moving mold core, the integrated replacement of the moving mold core and the cylinder can be realized. 4. By setting an air inlet channel connecting the air inlet of the cylinder piston to the air inlet pipe on the moving platen, and an air outlet channel connecting the air outlet of the cylinder piston to the air outlet pipe on the moving platen, the cylinder piston can be installed on the cylinder quick-change base without reconnecting the air pipe, thereby improving the efficiency of mold component replacement.

[0009] Through the above-mentioned design, the present invention effectively solves the technical problem that the existing manhole molds have a single function and cannot meet the production needs of manholes of multiple specifications, resulting in increased production costs and reduced production efficiency.

[0010] Furthermore, the bottom of the cylinder piston has a tapered guide section.

[0011] Furthermore, the taper of the tapered guide section is 40±10°.

[0012] Furthermore, a top plate guide rod is installed on the top plate, which penetrates the cylinder mounting plate and extends downwards, and a stroke adjustment section is fitted on the top plate guide rod.

[0013] Furthermore, the stroke adjustment section includes several stroke adjustment components, and a limiting component for restricting the downward movement of the stroke adjustment components is installed at the bottom of the top plate guide rod.

[0014] Furthermore, the fixed mold core has a plurality of mounting holes circumferentially opened, and each mounting hole is equipped with an exhaust insert. The exhaust insert includes an exhaust spring block installed in the mounting hole. A limit connector is installed on the exhaust spring block. A spring is fitted on the limit connector. The limit connector has an end for limiting the movement of the spring. The mounting hole includes a first mounting section for accommodating the limit connector and the spring, a second mounting section for inserting the limit connector, and a third mounting section for accommodating the exhaust spring block.

[0015] Furthermore, the exhaust block has two opposing inclined surfaces in the circumferential direction.

[0016] Furthermore, it also includes a hydraulic cylinder, which includes a cylinder barrel and a piston rod installed inside the moving mold slider. The end of the cylinder barrel facing away from the moving mold core is connected to a cylinder mounting plate. The cylinder mounting plate is provided with an oil inlet, and the end of the cylinder barrel facing away from the cylinder mounting plate is provided with an oil outlet. An outwardly extending extension slide is installed on the moving mold plate. The end of the extension slide facing away from the moving mold plate is provided with a cylinder baffle. One end of the piston rod is fixedly installed on the cylinder baffle, and the other end is movably installed inside the cylinder barrel.

[0017] Furthermore, it also includes a branch pipe diameter interchangeable insert, which is installed in the mounting position and located on the outer periphery of the branch pipe core for matching branch pipe cores with different radial dimensions.

[0018] Furthermore, it also includes an ejector base plate, on which an upwardly extending reset lever is mounted, and a quick-release guide block is mounted on the top of the reset lever to support the moving mold slider. Attached Figure Description

[0019] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein: Figure 1 Schematic diagram of the common mold structure for multi-specification PP inspection well products provided by the present invention Figure 1 ; Figure 2 Schematic diagram of the common mold structure for multi-specification PP inspection well products provided by the present invention Figure 2 ; Figure 3 Schematic diagram of the common mold structure for multi-specification PP inspection well products provided by the present invention Figure 3 ; Figure 4 Schematic diagram of the common mold structure for multi-specification PP inspection well products provided by the present invention Figure 4 ; Figure 5 This is a top view of the moving mold assembly of the common mold for multi-specification PP inspection well products provided by the present invention; Figure 6 This is a schematic diagram of the structure of the four-way fixed model core provided by the present invention; Figure 7 This is a schematic diagram of the structure of the three-way fixed model core provided by the present invention; Figure 8 This is a schematic diagram of the structure of the elbow fixing model core provided by the present invention; Figure 9This is a schematic diagram of the structure of the initial model core provided by the present invention; Figure 10 This is a schematic diagram of the structure of the four-way moving model core provided by the present invention; Figure 11 This is a schematic diagram of the structure of the three-way moving model core provided by the present invention; Figure 12 This is a schematic diagram of the structure of the elbow moving model core provided by the present invention; Figure 13 This is a schematic diagram of the structure of the starting dynamic model core provided by the present invention; Figure 14 This is a schematic diagram of the structure of the exhaust insert provided by the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Fixed template; 2. Moving template; 3. Large core of fixed template for sedimentation well; 4. Small core of fixed template for sedimentation well; 5. Fixed template core for flow channel well; 6. Moving template core for sedimentation well; 7. Moving template core for flow channel well; 8. Fixed template core for four-way connector; 9. Fixed template core for three-way connector; 10. Fixed template core for elbow; 11. Initial fixed template core; 12. Interchangeable core for branch pipe diameter change; 13. Moving template core for four-way connector; 14. Moving template core for three-way connector; 15. Moving template core for elbow; 16. 17. Starting moving mold core; 18. Branch pipe fixed mold slider plug; 19. Branch pipe moving mold slider plug; 20. Moving mold slider; 21. Cylinder quick-change base; 22. Cylinder; 23. Air inlet; 24. Air outlet; 25. Air inlet pipe; 26. Air outlet pipe; 27. Cylinder piston; 28. Top plate guide rod; 29. ​​Top plate; 30. Stroke adjusting component; 31. Limiting component; 32. Exhaust spring block; 33. Limiting connector; 44. Spring 34. Spring; 35. Inclined surface; 36. Cylinder barrel; 37. Piston rod; 38. Cylinder mounting plate; 39. Oil inlet; 40. Oil outlet; 41. Extension slide; 42. Cylinder baffle; 43. Ejector pin base plate; 44. Reset pull rod; 45. Quick release guide block; 46. Positioning ring; 47. Nozzle; 48. Ejector pin panel; 49. Moving mold base plate; 50. Moving mold square iron; 51. T-shaped guide block; 52. Cylinder mounting plate; 53. Sealing ring; 54. 3. Air inlet nozzle; 54. Air outlet nozzle; 55. Top plate guide sleeve; 56. Large copper sleeve; 57. Guide pressure strip; 58. Secondary ejector rod; 59. Small copper sleeve; 60. Ejector rod copper pad; 61. Panel; 62. Fixed mold square iron; 63. Slider pressure strip; 64. Limit switch; 65. Moving mold support tube slider core; 66. Moving mold support tube slider locking position wear-resistant plate; 67. Moving mold core seat; 68. Moving mold core pressure ring; 69. Variable diameter interchangeable insert ring. Detailed Implementation

[0021] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0022] An embodiment of the common mold for multi-specification PP inspection wells provided by this invention: like Figures 1 to 4 As shown, the common mold for PP inspection well multi-specification products includes a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes a panel and a fixed template 1 arranged sequentially from top to bottom. A fixed mold core is installed inside the fixed template 1. A positioning ring 45 and a nozzle 46 are installed on the panel. The moving mold assembly includes a moving template 2, an ejector panel 47, an ejector base plate 42, and a moving mold base plate 48 arranged sequentially from top to bottom. A moving mold core and a moving mold slider 19 are installed inside the moving template 2. A moving mold square iron 49 is provided between the moving mold base plate 48 and the moving template 2. A forming cavity is formed between the fixed template 1 and the moving template 2. The fixed template 1 and the moving template 2 also have mounting positions for installing branch pipe cores, which are fitted vertically. The branch pipe core is equipped with a branch pipe slider plug.

[0023] Regarding the fixed model core. For example... Figures 6 to 9 As shown, the fixed model core includes a sedimentation well fixed model core 5 and a flow channel well fixed model core 5. The sedimentation well fixed model core includes a large sedimentation well fixed model core 3 and a small sedimentation well fixed model core 4. The flow channel well fixed model core 5 includes a large flow channel well fixed model core and a small flow channel well fixed model core 5.

[0024] Regarding the moving mold core and moving mold slider 19. For example... Figure 1 , Figure 2 and Figure 5 As shown, the moving model core includes a sedimentation well moving model core 6 and a flow channel well moving model core 7. The moving template 2 is provided with a moving model core seat 67 for installing the moving model core. The moving model core seat 67 is provided with a moving model core pressure ring 68 in the circumferential direction. The moving mold slider 19 is detachably installed on the moving template 2 and is located on the outer periphery of the cavity.

[0025] Specifically, the moving mold slider 19 is located on the outer periphery of the moving mold core seat 67. The moving mold slider 19 and the moving mold template 2 are connected by a T-shaped guide block 50. The T-shaped guide block 50 is detachably connected to both the moving mold slider 19 and the moving mold template 2. The moving mold slider 19 is equipped with a moving mold support tube slider core 65. The outer end of the moving mold support tube slider core 65 is provided with a moving mold support tube slider locking position wear-resistant plate 66.

[0026] Regarding the branch tube core. For example... Figures 5 to 13 As shown, the branch pipe cores include a four-way fixed core 8, a three-way fixed core 9, an elbow fixed core 10, a starting fixed core 11, and interchangeable branch pipe diameter reducing cores 12, four-way moving cores 13, three-way moving cores 14, elbow moving cores 15, and a starting moving core 16. It should be noted that... Figure 9 The initial fixed model core 11 in the figure is the initial fixed model core of the elbow. Figure 13 The starting dynamic model core 16 in the model is the starting dynamic model core for the elbow.

[0027] Accordingly, to match the branch tube core, the branch tube slider plug includes a branch tube fixed mold slider plug 17 and a branch tube moving mold slider plug 18; within the mounting position, a branch tube diameter changing interchange insert ring 69 is also provided on the outer periphery of the branch tube core to adapt to branch tube cores with different radial dimensions, thereby improving the overall versatility and flexibility of the mold.

[0028] To facilitate demolding, such as Figures 1 to 4 As shown, a cylinder mounting plate 51 for mounting cylinder 21 is provided on the moving model core. A top plate 28 is provided between the cylinder mounting plate 51 and the fixed model core. A cylinder quick-change base 20 for mounting cylinder piston 26 is provided on the moving template 2. The cylinder quick-change base 20 has an air inlet channel connected to the air inlet 22 of cylinder piston 26 and the air inlet pipe 24 on the moving template 2, and an air outlet channel connected to the air outlet 23 of cylinder piston 26 and the air outlet pipe 25 on the moving template 2. The head of cylinder piston 26 includes a tapered guide section and The straight-body sealing section is equipped with a sealing ring 52, and the tapered guide section has a taper of 40±10°. During demolding, the tapered surface guides the cylinder 21 to be installed quickly, ensuring that the air inlet 22 and outlet 23 of the cylinder piston 26 can be quickly connected to the air inlet pipe 24 and outlet pipe 25 of the cylinder quick-change base 20. This allows for rapid replacement of the moving mold core and cylinder 21 on the moving template 2 without disassembling the cylinder 21 or reconnecting the air pipes, greatly improving the replacement efficiency of the cylinder 21 and the moving mold core. During demolding, the piston rod 36 of the cylinder 21 pushes upward to lift the top plate 28, thereby achieving product demolding.

[0029] Accordingly, the moving template 2 is provided with an air inlet 53 and an air outlet 54.

[0030] To ensure the accuracy of the ejection action and meet the ejection stroke requirements of various products, a top plate guide rod 27 is installed on the top plate 28, extending downward through the cylinder mounting plate 51. The cylinder mounting plate 51 has a top plate guide sleeve 55 for the top plate guide rod 27 to pass through and guide it. A stroke adjustment section is fitted onto the top plate guide rod 27 to adjust its ejection length. The stroke adjustment section includes several stroke adjustment elements 29. A limiting element 30 is installed at the bottom of the top plate guide rod 27 to restrict the downward movement of the stroke adjustment elements 29. In this embodiment, there are four stroke adjustment elements 29, and the limiting element 30 is a bolt. In other embodiments, the number of stroke adjustment elements 29 is adjusted according to specific actual needs, and the limiting element 30 can be a screw or a pin, etc.

[0031] By setting up several stroke adjustment components 29 as stroke adjustment sections, after the trial molding is completed and the required ejection stroke is determined, there is no need to remanufacture the top plate guide rod 27. Simply install the corresponding number of stroke adjustment components 29 to achieve rapid and flexible adjustment of the ejection of the top plate 28, which greatly improves the flexibility of mold design and the production efficiency of inspection wells.

[0032] To address the issues of product deformation and loud sonic booms caused by air intake during large mold opening processes due to vacuum formation between the product and the mold cavity, several mounting holes are made circumferentially in the fixed mold core, with an venting insert installed in each hole. For example... Figure 14 As shown, the exhaust insert includes an exhaust spring block 31 installed in the mounting hole. A limiting connector 32 is installed on the exhaust spring block 31. A spring 33 is fitted on the limiting connector 32, and the limiting connector 32 has an end for limiting the movement of the spring 33. The mounting hole includes, from top to bottom, a first mounting section for accommodating the limiting connector 32 and the spring 33, a second mounting section for inserting the limiting connector 32, and a third mounting section for accommodating the exhaust spring block 31. The exhaust spring block 31 has two opposing inclined surfaces 34 in its circumferential direction to improve the speed and accuracy of the exhaust spring block 31's reset.

[0033] When the mold draws air, the vacuum created between the core and the product within the cavity, along with the pressure difference between the vacuum and the external environment, compresses the spring 33 downwards. This creates an air intake gap at the exhaust block 31, allowing external air to quickly enter the vacuum cavity. This rapid air intake balances the pressure inside and outside the cavity, effectively preventing the vacuum environment from adhering to the product or causing it to stick tightly to the cavity during mold opening. This ensures smooth demolding of subsequent products, guaranteeing product quality and the normal operation of the mold.

[0034] To facilitate demolding, a reset pull rod 43 is installed on the ejector base plate 42, extending upward through the ejector panel 47 and to the moving mold slider 19. A quick-release guide block 44 is detachably installed on the top of the reset pull rod 43. The quick-release guide block 44 is detachably connected to the moving mold slider 19 to support the moving mold slider 19. A large copper sleeve 56 is also installed on the upper part of the reset pull rod 43. A guide pressure strip 57 is provided on the outer periphery of the quick-release guide block 44 on the top of the reset pull rod 43. The guide pressure strip 57 is used to provide guidance for the installation of the quick-release guide block 44 and to restrict the movement of the quick-release guide block 44. A secondary ejector rod 58 is installed on the ejector panel 47, extending upward to the bottom of the moving mold slider 19. A small copper sleeve 59 is provided at the upper end of the secondary ejector rod 58, and an ejector rod copper pad 60 is provided on the top surface of the secondary ejector rod 58.

[0035] When disassembling the moving mold slider 19, it is not necessary to disassemble the entire moving mold assembly. Simply use the reset pull rod 43 to push the quick-release guide block 44 and the fixed mold slider upwards. Then, separate the T-shaped guide block 50 from the moving mold slider 19 from the fixed mold parting surface. The slider can then be easily removed from the fixed mold plate 1, which greatly simplifies the disassembly process, improves disassembly efficiency, and reduces the operational risks caused by the cumbersome disassembly process.

[0036] In addition, a hydraulic cylinder is installed inside the moving mold slider 19 to facilitate demolding. To reduce the overall size of the mold while shortening the time for mold installation, stacking, and connecting oil pipes, the cylinder barrel 35 of the hydraulic cylinder is installed inside the moving mold slider 19. The end of the cylinder barrel 35 away from the moving mold core is connected to a cylinder mounting plate 37. The cylinder mounting plate 37 is provided with an oil inlet 38, and the end of the cylinder barrel 35 away from the cylinder mounting plate 37 is provided with an oil outlet 39. An outwardly extending extension slide 40 is installed on the moving mold plate 2. The top surfaces of both opposite sides of the extension slide 40 are provided with slider pressure strips 63. The end of the extension slide 40 away from the moving mold plate 2 is provided with a cylinder baffle 41. A limit switch 64 is provided at the cylinder baffle 41 of the extension slide 40. One end of the piston rod 36 is fixedly installed on the cylinder baffle 41, and the other end is movably installed inside the cylinder barrel 35. The high-pressure oil pipe is connected to the exposed oil nozzle via the cylinder mounting plate 37, facilitating quick connection with the injection molding machine's hydraulic system. This built-in cylinder installation method also simplifies the installation process of installing the cylinder after the mold is assembled, significantly improving safety during mold installation.

[0037] It should be noted that in this embodiment, the moving mold slider 19 is made of hollow 45# steel pipe, which can reduce the steel cost of manufacturing the moving mold slider 19 and reduce the machining cost of hollowing out the internal space of the moving mold slider 19 to process the mounting position for installing the cylinder 35; the product types include sedimentation wells and flow channel wells, and the product specifications refer to sedimentation wells or flow channel wells that include four-way or three-way or elbow or starting pipe; a fixed mold square iron 62 can be set between the fixed template 1 and the panel 61 as needed.

[0038] The working principle of the common mold for multi-specification PP inspection wells provided by this invention is as follows: First, according to production needs, install the large core 3 and small core 4 of the fixed mold for sedimentation well in the fixed template 1, or install the large core and small core of the fixed mold for flow channel well. Install the moving mold core 6 of sedimentation well or the moving mold core 7 of flow channel well, the moving mold core pressure ring 68, the moving mold slider 19 and the T-shaped guide block 50 in the moving template 2. Install the corresponding four-way fixed mold core 8 or three-way fixed mold core 9 or elbow fixed mold core 10 or starting fixed mold core 11 in the installation position composed of fixed template 1 and moving template 2 according to the production specifications of sedimentation well or flow channel well, and equip it with branch pipe fixed mold plugs. Install the corresponding branch pipe diameter changing interchangeable core 12 or four-way moving mold core 13 or three-way moving mold core 14 or elbow moving mold core 15 or starting moving mold core 16 and equip it with branch pipe moving mold plugs. Set the branch pipe diameter changing interchangeable insert ring 69 on the outer periphery of the branch pipe core to adapt to branch pipe cores with different radial dimensions. Then, the injection mold is installed on the injection molding machine, ensuring a secure connection. After that, a suitable plastic material is selected and the parameters of the injection molding machine, such as temperature, pressure, and speed, are set. Once the parameters are set, the injection molding machine is started, the mold closes, forming a closed cavity. The injection material is heated and melted in the barrel of the injection molding machine to form a melt, which is then injected into the cavity through the nozzle 46 to complete the injection molding process. After injection molding is completed, the product is demolded. First, the moving mold and the fixed mold are separated. Then, the product is ejected upward by the reset pull rod 43, the secondary ejector rod 58, the cylinder 21 and the ejector plate 28. The fixed plate 1 forms an air intake gap at the venting spring block 31, so that the external air can quickly enter the vacuum cavity from the air intake gap to realize the rapid air intake of the cavity to balance the pressure inside and outside the cavity. The ejection stroke of the ejector plate 28 is controlled by the stroke adjustment component 29. By supplying oil to the hydraulic cylinder, the cylinder 35 drives the moving mold slider 19 to move outward along the piston rod 36, thus completing the demolding of the product. When it is necessary to change the type of product to be produced, the moving mold slider 19 is ejected by the reset pull rod 43, and then the moving mold slider 19 is separated from the fixed mold plate 1, the quick-release guide block 44 and the T-shaped guide block 50. After disassembly, the above steps can be repeated to produce the new type of product.

[0039] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0040] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A common mold for multi-specification PP inspection well products, comprising a cavity formed by a fixed mold plate and a movable mold plate, characterized in that, It also includes a fixed mold core, a moving mold core, a moving mold slider, a branch pipe core, and a branch pipe slider plug. The fixed template and the moving template have mounting positions that fit together vertically for installing the branch pipe core. The fixed model core includes a sedimentation well fixed model core and a flow channel well fixed model core; The moving model core includes a sedimentation well moving model core and a flow channel well moving model core; The branch pipe core includes a four-way fixed core, a three-way fixed core, an elbow fixed core, a starting fixed core, and a branch pipe diameter changing interchangeable core, a four-way moving core, a three-way moving core, an elbow moving core, and a starting moving core; The branch pipe slider plug includes a branch pipe fixed mold slider plug and a branch pipe moving mold slider plug; The moving mold slider is detachably mounted on the moving mold plate and located on the outer periphery of the cavity. The bottom of the moving mold slider is detachably connected to the top of the reset pull rod mounted on the ejector pin base plate. The moving model core is provided with a cylinder mounting plate for mounting cylinders. A top plate is provided between the cylinder mounting plate and the fixed model core. The moving template is provided with a cylinder quick-change base for mounting cylinder pistons. The cylinder quick-change base has an air inlet channel connecting the air inlet of the cylinder piston to the air inlet pipe on the moving template, and an air outlet channel connecting the air outlet of the cylinder piston to the air outlet pipe on the moving template.

2. The common mold for multi-specification PP inspection wells according to claim 1, characterized in that, The bottom of the cylinder piston has a tapered guide section.

3. The common mold for multi-specification PP inspection wells according to claim 2, characterized in that, The taper of the tapered guide section is 40±10°.

4. The common mold for multi-specification PP inspection well products according to any one of claims 1 to 3, characterized in that, A top plate guide rod is installed on the top plate, which passes through the cylinder mounting plate and extends downward. A stroke adjustment section is fitted on the top plate guide rod.

5. The common mold for multi-specification PP inspection wells according to claim 4, characterized in that, The stroke adjustment section includes several stroke adjustment components, and a limiting component is installed at the bottom of the top plate guide rod to restrict the downward movement of the stroke adjustment components.

6. The common mold for multi-specification PP inspection well products according to any one of claims 1 to 3, characterized in that, The fixed mold core has several mounting holes circumferentially. Each mounting hole has an exhaust insert installed in it. The exhaust insert includes an exhaust spring block installed in the mounting hole. A limit connector is installed on the exhaust spring block. A spring is fitted on the limit connector. The limit connector has an end for limiting the movement of the spring. The mounting hole includes a first mounting section for accommodating the limit connector and the spring, a second mounting section for inserting the limit connector, and a third mounting section for accommodating the exhaust spring block.

7. The common mold for multi-specification PP inspection wells according to claim 6, characterized in that, The exhaust bomb has two opposing inclined surfaces in its circumference.

8. The common mold for multi-specification PP inspection well products according to any one of claims 1 to 3, characterized in that, It also includes a hydraulic cylinder, which includes a cylinder barrel and a piston rod installed in the moving mold slider. The end of the cylinder barrel away from the moving mold core is connected to a cylinder mounting plate. The cylinder mounting plate is provided with an oil inlet, and the end of the cylinder barrel away from the cylinder mounting plate is provided with an oil outlet. An outwardly extending extension slide is installed on the moving mold plate. The end of the extension slide away from the moving mold plate is provided with a cylinder baffle. One end of the piston rod is fixedly installed on the cylinder baffle, and the other end is movably installed in the cylinder barrel.

9. The common mold for multi-specification PP inspection well products according to any one of claims 1 to 3, characterized in that, It also includes a branch pipe diameter interchangeable insert, which is installed in the mounting position and located on the outer periphery of the branch pipe core to match branch pipe cores with different radial dimensions.

10. The common mold for multi-specification PP inspection well products according to any one of claims 1 to 3, characterized in that, The top of the reset lever is equipped with a quick-release guide block to support the moving mold slider.

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