A water pump cavity slider closing forming die assembly

Abstract

The present invention discloses a die assembly for forming a slider closing of a water pump cavity, comprising an upper die assembly and a lower die assembly, wherein the upper die assembly is connected to an upper pressure plate of a punch press, and the lower die assembly is connected to a lower push plate of the punch press. The upper die assembly is integrally press-fitted onto the water pump cavity to be processed, and the lower die assembly can perform internal closing processing on the water pump cavity to be processed, and the water pump cavity after the internal closing processing is easy to demold. The present invention can be installed on a punch press to perform internal closing processing on the water pump cavity, ensuring that the internal closing water pump cavity after processing is easy to demold, with accurate positioning, good consistency in internal closing processing, high production efficiency, and safe, stable and reliable product demolding. The present invention is suitable for promotion and use as a special die assembly when performing internal closing processing and forming on the water pump diversion cavity.

Description

Technical Field

[0001] The invention relates to the technical field of processing and forming dies for water pump guide cavity parts, and in particular to a water pump cavity slider closing and forming die assembly. Background Art

[0002] The water pumps in secondary water supply equipment can pressurize or boost the municipal water supply in order to meet the actual needs of people's secondary water supply and achieve better expected water supply results. The water pump guide cavity is an important component in the production and manufacturing of water pump products. When producing and processing the water pump guide cavity, it is necessary to perform an inner-closed buckle processing on the inner side of the water pump guide cavity. Existing water pump cavity forming molds have the following problems when used: the water pump cavity after the inner-closed processing is difficult to demold, the positioning is inaccurate, the inner-closed processing consistency is poor, and the production efficiency is low. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems existing in the use of the existing water pump cavity forming mold. The present invention can be installed on a punching machine to perform stamping and inner closing processing on the water pump cavity, ensuring that the water pump cavity with the inner closing after processing is easy to demold, with accurate positioning, good inner closing processing consistency, high production efficiency, and safe, stable and reliable product demolding. It is suitable for promotion and use as a special mold assembly when performing inner closing processing and forming on the water pump diversion cavity.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A water pump cavity slider closing forming die assembly includes an upper die assembly and a lower die assembly, the upper die assembly is connected to the upper pressure plate of the punch press, and the lower die assembly is connected to the lower push plate of the punch press, and further includes: the upper die assembly has a pneumatic pressure rod limiting assembly and an upper die inner clamping linkage assembly, the lower part of the pneumatic pressure rod limiting assembly is connected to the upper die inner clamping linkage assembly, and a cylinder 1 is provided on the upper part of the pneumatic pressure rod limiting assembly. The cylinder 1 pushes the pneumatic pressure rod limiting assembly downward, so that the pneumatic pressure rod limiting assembly and the upper die inner clamping linkage assembly are pressed onto the water pump cavity to be processed as a whole.

[0006] The lower die set comprises a pad die clamping assembly, a driving slider spring assembly, a passive closing slider and a liftable inner stripping assembly. The lower portion of the pad die clamping assembly is arranged on the lower pushing plate of the punch press. The pad die clamping assembly comprises a lower fixed plate. A cavity area is provided in the middle of the lower fixed plate. A liftable inner stripping assembly is provided in the cavity area. The driving slider spring assembly is provided inside the middle area of ​​the liftable inner stripping assembly. A passive closing slider is provided between the driving slider spring assembly and the middle area of ​​the liftable inner stripping assembly. The upper portion of the driving slider spring assembly and the passive closing slider can be placed on a water pump cavity to be processed. The driving slider spring assembly can drive the passive closing slider so that the passive closing slider performs inner closing processing on the water pump cavity to be processed inside the middle area of ​​the liftable inner stripping assembly.

[0007] The driving slider spring assembly can facilitate demoulding of the water pump cavity after inner closing processing.

[0008] In order to ensure that the upper die can steadily press the upper top of the water pump cavity to be processed when the upper die is pressed down to close the water pump cavity to be processed on the lower die, so that the water pump cavity to be processed is accurately pressed down and positioned without deflection or displacement, the upper die is provided with a pneumatic pressure rod limiting assembly and an upper die inner clamping linkage assembly, the pneumatic pressure rod limiting assembly has a hitting rod, the upper part of the hitting rod is connected to the cylinder, the lower part of the hitting rod is connected to the limiting rod, the lower part of the limiting rod is connected to the upper die inner clamping linkage assembly, the upper die inner clamping linkage assembly has an upper die inner stripping part,

[0009] The outer side of the upper part of the hitting rod is provided with an upper die seat, which can be connected to the upper pressing plate of the punch press, the lower part of the upper die seat is connected with an upper pad, the lower part of the upper pad is connected with an upper clamping plate, and the lower part of the upper clamping plate is connected with an upper fixing plate.

[0010] The upper fixing plate is internally connected with a punch pad, and the upper portion of the punch pad is connected to the inner side of the lower portion of the upper clamping plate.

[0011] The lower part of the punch pad is connected to an upper punch, and the lower bottom of the upper punch is wedge-shaped. The wedge shape of the lower bottom of the upper punch matches the shape of the bottom of the water pump cavity to be processed.

[0012] The upper die inner stripper is located on the inner side of the punch pad and the upper fixed plate. The upper die inner stripper can move upward or downward with the limit rod and the hitting rod.

[0013] The stripping piece in the upper die can steadily press the upper top of the water pump cavity to be processed, so that the water pump cavity to be processed is pressed down and positioned accurately without deflection or displacement.

[0014] In order to prevent the upper top of the water pump cavity to be processed from being deformed by punching when the upper pressure plate of the punch press drives the upper die seat to press downward, a small cavity positioning pressure piece is further provided below the upper die inner stripping piece. The small cavity positioning pressure piece can prevent the upper top of the water pump cavity to be processed from being deformed by the upper die inner stripping piece when the upper pressure plate of the punch press drives the upper die seat to press downward.

[0015] In order to accurately position the lower surrounding area of ​​the water pump cavity to be processed so that the lower part of the water pump cavity to be processed does not move, the lower die set is further provided with a pad die clamping assembly, a driving slider spring assembly, a passive closing slider and a liftable inner stripping assembly. The pad die clamping assembly in the lower die set has a lower die seat, the bottom of the lower die seat can be connected to the lower push plate of the punch press, the lower die seat is connected with a lower pad, the lower pad is connected with a lower clamping plate, the lower clamping plate is connected with a lower fixed plate, the lower fixed plate is connected with a die pad, and the die pad is connected with a die template.

[0016] The lower fixed plate, the die pad and the middle inner side of the die plate all have a cavity area.

[0017] The driving slider spring assembly and the passive closing slider are both arranged in the cavity area of ​​the lower fixed plate. A liftable inner stripping assembly is provided between the outer side of the driving slider spring assembly and the inner cavity area of ​​the die pad. The liftable inner stripping assembly and the inner side of the die plate can accurately position the lower surrounding area of ​​the water pump cavity to be processed, so that the lower part of the water pump cavity to be processed does not move.

[0018] In order to ensure the stable positioning of the inner side of the lower part of the water pump cavity to be processed and to ensure the good consistency of the closing of the inner side of the water pump cavity to be processed, the driving slider spring assembly in the lower die set has a return spring component, the lower part of the return spring component is installed at the bottom of the cavity area of ​​the die pad, the upper part of the return spring component is provided with a connecting top block component, the outer side of the return spring component and the connecting top block component is provided with a slide member, the middle of the slide member has a hollow area, and the hollow area of ​​the slide member is penetrated by the driving block component.

[0019] The return spring can be replaced by one of various elastic components such as a coil spring, an elastic cylinder spring, a nitrogen spring, etc.

[0020] The driving block is generally in a shape of being larger at the top and smaller at the bottom. The lower portion of the driving block passes through the hollow area in the middle of the sliding seat. The lower portion of the driving block is connected to the upper top of the connecting top block. The driving block can move downward as the return spring is compressed, or can move upward as the return spring rebounds.

[0021] A passive closing slider is provided on the outer side of the upper portion of the driving block. The driving block can press the passive closing slider downward, so that the passive closing slider moves outward in the cavity area inside the concave template, thereby closing the inner lower part of the water pump cavity to be processed. The driving block and the passive closing slider can ensure good consistency of the closing of the inner side of the water pump cavity to be processed.

[0022] The outer sides of the upper tops of the driving block and the passive closing sliding block can be provided with a cover for the water pump cavity to be processed, so that the inner side of the lower part of the water pump cavity to be processed is positioned stably.

[0023] In order to make the water pump cavity after the stamping inner closing process easy to be removed from the top of the driving slider spring assembly and easy to demould, further, the liftable inner stripping assembly in the lower die assembly includes a lower die inner stripping piece and a lower die stripping plate, which are integrally installed in the cavity area on the inner side of the die pad, and the lower die inner stripping piece and the lower die stripping plate are integrally located on the outer side of the driving slider spring assembly, and the upper part of the lower die inner stripping piece and the lower die stripping plate can accurately limit the lower bottom of the water pump cavity to be processed.

[0024] A second cylinder is provided on the outer side of the bottom of the lower die stripping plate, and the second cylinder can push the lower die stripping plate upward, so that the lower die stripping plate and the lower die inner stripping part move upward together, so that the water pump cavity after the stamping inner closing process is completed can be easily removed from the top of the driving slider spring assembly and easily demolded.

[0025] In order to meet the processing needs of different models of water pump cavities with different inward angles around the lower bottom, the lower outer side of the passive closing slider is further provided with an inward slope surface, and the angle between the inward slope surface and the longitudinal vertical surface of the lower part of the passive closing slider is in the range of 10° to 45°.

[0026] The passive closing slider can be driven by the driving block by relying on the downward pressure of the inner stripping part of the upper die in the upper die group, and then move outward along the area between the upper part of the slide member and the upper part of the liftable inner stripping component to achieve closing processing around the inner side of the lower bottom of the water pump cavity to be processed.

[0027] Compared with the prior art, the present invention provides a water pump cavity slider closing forming die assembly, which has the following beneficial effects:

[0028] 1. The water pump cavity slider closing forming die assembly is formed by connecting the upper die seat in the upper die assembly with the upper pressure plate of the punch press, and the lower die seat in the lower die assembly is connected to the lower push plate of the punch press. The upper pressure plate of the punch press presses the upper die seat downward, and the upper die inner stripper connected to the lower part of the limit rod moves downward together. The upper die inner stripper drives the cavity positioning small pressure piece. The lower part of the upper die inner stripper and the inner side of the upper punch can limit the surrounding area of ​​the water pump cavity to be processed. The cavity positioning small pressure piece is pressed downward by the driving rod and the limit rod connected to the cylinder, and the cavity positioning small pressure piece presses the driving block downward. The driving block of the slider spring assembly in the lower die assembly drives the passive closing slider downward, and the passive closing slider moves outward in the cavity area inside the concave die plate to close the inner lower part of the water pump cavity to be processed. At the same time, the lower die inner stripping piece and the lower die stripping plate in the cavity area inside the concave die pad can accurately limit the lower bottom of the water pump cavity to be processed. The water pump cavity slider closing forming die assembly can ensure accurate positioning and good consistency in the inner closing processing of the water pump cavity to be processed;

[0029] 2. The water pump cavity slider closing forming die assembly is provided with a reset spring component in the bottom of the cavity area of ​​the die pad of the driving slider spring assembly in the lower die assembly, a connecting top block component is provided on the upper part of the reset spring component, a slide member is provided on the outer side of the reset spring component and the connecting top block component, a hollow area is provided in the middle of the slide member, a driving block component is installed in the hollow area of ​​the slide member, a driving block component is provided on the upper top of the connecting top block component, the water pump cavity to be processed can be placed on the upper part of the driving slider spring assembly and the passive closing slider, when the upper pressure plate of the punch press presses down the upper die seat, the driving rod moves downward together with the upper die inner stripper connected to the lower part of the limit rod, and the upper die inner stripper The stripper, the punch pad and the upper punch are integrally pressed onto the water pump cavity to be processed. At the same time, the cylinder pushes down the limit rod in the pneumatic pressure rod limit assembly, and the limit rod pushes down the cavity positioning small pressure piece, and the cavity positioning small pressure piece presses the driving block downward. At this time, the driving block can drive the passive closing slider downward, and the passive closing slider moves outward in the cavity area inside the concave template to close the inner lower part of the water pump cavity to be processed. At the same time, the driving block compresses the reset spring part downward, so that the reset spring part is compressed in the area composed of the cavity area of ​​the concave die pad, the lower part of the connecting top block and the inner lower part of the slide member.

[0030] When the upper pressure plate of the punch press drives the upper die seat to lift up, the upper die inner stripper and the upper punch are lifted up together with other components in the upper die group, and the cavity positioning small pressure piece is removed from the upper top of the water pump cavity after the inner closing process. At this time, the compressed return spring can provide an upward return elastic force to make the driving block move upward and be reset. The passive closing slider driven downward by the driven block moves inward and resets in the cavity area on the inner side of the concave template. At the same time, cylinder 2 can push up the lower die stripper plate, so that the lower die stripper plate and the lower die inner stripper move upward together, so that the water pump cavity after the stamping inner closing process can be easily removed from the upper top of the driving block and the passive closing slider, so that the water pump cavity after the inner closing process is easy to demould, the production efficiency is high, and the product demoulding is safe, stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the vertical longitudinal section of the entire die assembly for forming a water pump cavity slider provided by the present invention;

[0032] Figure 2 This is a schematic diagram of a vertical longitudinal section of the entire drive slider spring assembly when the upper pressure plate of the punch press presses down the upper die seat, and the water pump cavity slider closing forming die assembly proposed by the present invention is covered with the drive slider spring assembly in the lower die after the inner closing process, and the water pump cavity has a cavity positioning small pressure piece on it;

[0033] Figure 3The schematic diagram of the overall vertical longitudinal section of the embodiment of the present invention is as follows: when the upper pressure plate of the punch press presses down the upper die seat, the water pump cavity slider closing forming die assembly proposed by the present invention is covered with the driving slider spring assembly after the inner closing process, the water pump cavity is provided with an upper die inner stripper, the water pump cavity is provided with an upper punch head on the outside of the water pump cavity, and the cylinder pushes the limit rod downward, and the limit rod pushes the cavity positioning small pressure piece downward, driving the slider spring assembly to move the connected top block;

[0034] Figure 4 This is an overall schematic diagram of a water pump cavity part of a type to be processed by a water pump cavity slider closing forming die assembly proposed by the present invention;

[0035] Figure 5 for Figure 4 Schematic diagram of the vertical longitudinal section of the water pump cavity as a whole;

[0036] Figure 6 for Figure 4 Schematic diagram of the vertical cross-section of the water pump cavity after internal closing processing.

[0037] In the figure: 1. hitting rod; 2. limiting rod; 3. upper die seat; 4. upper pad; 5. upper splint; 6. upper fixed plate; 7. concave die plate; 8. water pump cavity; 9. concave die pad; 10. lower fixed plate; 11. lower splint; 12. lower pad; 13. lower die seat; 14. upper die inner stripper; 15. punch pad; 16. upper punch; 17. passive closing slider; 18. driving block; 19. lower die inner stripper; 20. lower die stripper plate; 21. connecting top block; 22. slide seat; 23. reset spring; 24. small pressure piece for cavity positioning. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0040] The present invention will be further described in detail below with reference to examples and specific implementation methods.

[0041] See the accompanying drawings: a water pump cavity slider closing forming die assembly, including an upper die assembly and a lower die assembly, the upper die assembly is connected to the upper pressure plate of the punch press, and the lower die assembly is connected to the lower push plate of the punch press, and further includes: the upper die assembly has a pneumatic pressure rod limiting assembly and an upper die inner clamping linkage assembly, the lower part of the pneumatic pressure rod limiting assembly is connected to the upper die inner clamping linkage assembly, and a cylinder 1 is provided on the upper part of the pneumatic pressure rod limiting assembly. The cylinder 1 pushes the pneumatic pressure rod limiting assembly downward, so that the pneumatic pressure rod limiting assembly and the upper die inner clamping linkage assembly are pressed onto the water pump cavity 8 to be processed.

[0042] The lower die set includes a pad die clamping assembly, a driving slider spring assembly, a passive closing slider and a liftable inner stripping assembly. The lower portion of the pad die clamping assembly is arranged on the lower pushing plate of the punch press. The pad die clamping assembly has a lower fixed plate 10. There is a cavity area in the middle of the lower fixed plate 10. The liftable inner stripping assembly is arranged in the cavity area. The driving slider spring assembly is arranged inside the middle area of ​​the liftable inner stripping assembly. A passive closing slider 17 is arranged between the driving slider spring assembly and the middle area of ​​the liftable inner stripping assembly. The upper portion of the driving slider spring assembly can be placed on the water pump cavity 8 to be processed. The driving slider spring assembly can drive the passive closing slider 17 so that the passive closing slider 17 performs inner closing processing on the water pump cavity 8 to be processed inside the middle area of ​​the liftable inner stripping assembly.

[0043] The driving slider spring assembly can facilitate demoulding of the water pump cavity 8 after the inner closing process.

[0044] In order to ensure that the upper die can steadily press the upper top of the water pump cavity 8 to be processed when the upper die is pressed down to close the water pump cavity 8 to be processed on the lower die, so that the water pump cavity 8 to be processed is pressed down and positioned accurately without deflection or displacement, the upper die is provided with a pneumatic pressure rod limiting assembly and an upper die inner clamping linkage assembly, the pneumatic pressure rod limiting assembly comprises a hitting rod 1, the upper part of the hitting rod 1 is connected to the cylinder 1, the lower part of the hitting rod 1 is connected to the limiting rod 2, the lower part of the limiting rod 2 is connected to the upper die inner clamping linkage assembly, the upper die inner clamping linkage assembly has an upper die inner stripping piece 14,

[0045] The upper outer side of the punching rod 1 is provided with an upper die seat 3, which can be connected to the upper pressing plate of the punch press, and the lower part of the upper die seat 3 is connected with an upper pad 4, and the lower part of the upper pad 4 is connected with an upper clamping plate 5, and the lower part of the upper clamping plate 5 is connected with an upper fixing plate 6.

[0046] The upper fixing plate 6 is internally connected with a punch pad 15, and the upper portion of the punch pad 15 is connected to the inner side of the lower portion of the upper clamping plate 5.

[0047] The lower part of the punch pad 15 is connected to the upper punch 16, and the lower bottom of the upper punch 16 is wedge-shaped. The wedge shape of the lower bottom of the upper punch 16 matches the shape of the bottom of the water pump cavity 8 to be processed.

[0048] The upper die inner stripper 14 is located on the inner side of the punch pad 15 and the upper fixed plate 6. The upper die inner stripper 14 can move upward or downward with the limit rod 2 and the driving rod 1.

[0049] The upper mold inner stripper 14 can steadily press the upper top of the water pump cavity 8 to be processed, so that the water pump cavity 8 to be processed is pressed down and positioned accurately without deflection or displacement.

[0050] In order to prevent the upper top of the water pump cavity 8 to be processed from being deformed by punching when the upper pressure plate of the punch press drives the upper die base 3 to press downward, a small cavity positioning pressure piece 24 is further provided below the upper die inner stripper 14. The small cavity positioning pressure piece 24 can prevent the upper top of the water pump cavity 8 to be processed from being deformed by the upper die inner stripper 14 when the upper pressure plate of the punch press drives the upper die base 3 to press downward.

[0051] In order to accurately position the lower surrounding area of ​​the water pump cavity 8 to be processed so that the lower part of the water pump cavity 8 to be processed does not move, the lower die set is further provided with a pad die clamping assembly, a driving slider spring assembly, a passive closing slider and a jacking inner stripping assembly. The pad die clamping assembly in the lower die set has a lower die base 13, the bottom of the lower die base 13 can be connected to the lower push plate of the punch press, the lower die base 13 is connected with a lower pad 12, the lower pad 12 is connected with a lower clamping plate 11, the lower clamping plate 11 is connected with a lower fixed plate 10, the lower fixed plate 10 is connected with a die pad 9, and the die pad 9 is connected with a die plate 7.

[0052] The lower fixing plate 10, the die pad 9 and the die plate 7 all have a cavity area in the middle inner side.

[0053] The driving slider spring assembly and the passive closing slider 17 are both arranged in the cavity area of ​​the lower fixed plate 10. A lifting inner stripping assembly is provided between the outer side of the driving slider spring assembly and the inner cavity area of ​​the die pad 9. The lifting inner stripping assembly can lift the upper part of the inner stripping assembly and the inner side of the die plate 7, and can accurately position the lower surrounding area of ​​the water pump cavity 8 to be processed, so that the lower part of the water pump cavity 8 to be processed does not move.

[0054] In order to ensure the stable positioning of the inner side of the lower part of the water pump cavity 8 to be processed and to ensure the good consistency of the inner side of the water pump cavity 8 to be processed, the driving slider spring assembly in the lower die set has a return spring member 23, the lower part of the return spring member 23 is installed at the bottom of the cavity area of ​​the die pad 9, the upper part of the return spring member 23 is provided with a connecting top block 21, the outer side of the return spring member 23 and the connecting top block 21 is provided with a slide member 22, the middle of the slide member 22 has a hollow area, and the hollow area of ​​the slide member 22 is penetrated by the driving block 18.

[0055] The return spring 23 can be replaced by one of various elastic components such as a coil spring, an elastic cylinder spring, a nitrogen spring, etc.

[0056] The driving block 18 is generally larger at the top and smaller at the bottom. The lower portion of the driving block 18 passes through the hollow area in the middle of the sliding seat 22. The lower portion of the driving block 18 is connected to the upper top of the connecting top block 21. The driving block 18 can move downward as the return spring 23 is compressed, or the driving block 18 can move upward as the return spring 23 rebounds.

[0057] A passive closing slider 17 is provided on the outer side of the upper portion of the driving block 18. The driving block 18 can press the passive closing slider 17 downward, so that the passive closing slider 17 moves outward in the cavity area inside the concave template 7, thereby closing the inner lower part of the water pump cavity 8 to be processed. The driving block 18 and the passive closing slider 17 can ensure good consistency in the closing of the inner side of the water pump cavity 8 to be processed.

[0058] The outer side of the upper top of the driving block 18 and the passive closing slider 17 can be provided with a cover to install the water pump cavity 8 to be processed, so that the lower inner side of the water pump cavity 8 to be processed is positioned stably.

[0059] In order to make it easy to remove the water pump cavity 8 after the stamping inner closing process is completed from the top of the driving slider spring assembly and to demould it, further, the liftable inner stripping assembly in the lower die assembly includes a lower die inner stripping piece 19 and a lower die stripping plate 20, which are integrally installed in the cavity area inside the die pad 9, and the lower die inner stripping piece 19 and the lower die stripping plate 20 are integrally located outside the driving slider spring assembly, and the upper part of the lower die inner stripping piece 19 and the lower die stripping plate 20 can accurately limit the lower bottom of the water pump cavity 8 to be processed.

[0060] A second cylinder is provided on the outer side of the bottom of the lower die stripping plate 20. The second cylinder can push the lower die stripping plate 20 upward, so that the lower die stripping plate 20 and the lower die inner stripping part 19 move upward together, so that the water pump cavity 8 after the stamping inner closing process is completed can be easily removed from the top of the driving slider spring assembly and easily demolded.

[0061] In order to meet the processing needs of different models of the inner side of the bottom of the water pump cavity 8 to be processed, the inner angle of the closing is different, further, the lower outer side of the passive closing slider 17 is provided with an inward-buckling slope surface, and the angle between the inward-buckling slope surface and the longitudinal vertical surface of the lower part of the passive closing slider 17 is in the range of 10° to 45°.

[0062] The passive closing slider 17 can be driven by the driving block 18 by relying on the downward pressure of the upper mold inner stripping member 14 in the upper mold assembly, and then move outward along the area between the upper part of the slide member 22 and the upper part of the lifting inner stripping component to achieve closing processing around the inner side of the lower bottom of the water pump cavity 8 to be processed.

[0063] When in use, first install the water pump cavity 8 slider closing forming die assembly of the present invention on the punching machine as a whole, so that the upper part of the upper die seat 3 in the upper die assembly is connected to the upper pressure plate of the punching machine, and the bottom of the lower die seat 13 in the lower die assembly is connected to the lower push plate of the punching machine. When the upper pressure plate of the punching machine presses down the upper die seat 3, the upper die inner stripper 14 connected to the lower part of the limit rod 2 moves downward together, and the upper die inner stripper 14, the punch pad 15 and the upper punch 16 are pressed together as a whole on the water pump cavity 8 to be processed. At the same time, the cylinder pushes down the limit rod limit assembly in the pneumatic pressure rod. The positioning rod 2 and the limiting rod 2 push the cavity positioning small pressure piece 24 downward, and the cavity positioning small pressure piece 24 presses the driving block 18 downward. At this time, the driving block 18 can drive the passive closing slider 17 downward, and the passive closing slider 17 moves outward in the cavity area inside the concave template 7 to close the inner lower part of the water pump cavity 8 to be processed. At the same time, the driving block 18 compresses the return spring member 23 downward, so that the return spring member 23 is compressed in the area composed of the cavity area of ​​the concave die pad 9, the lower part of the connecting top block 21 and the inner lower part of the slide member 22;

[0064] When the upper pressure plate of the punch press drives the upper die seat 3 to lift up, the upper die inner stripper 14 and the upper punch 16 are lifted up together with other components in the upper die group, and the cavity positioning small pressure piece 24 is removed from the top of the water pump cavity 8 after the inner closing process. At this time, the compressed return spring 23 can provide an upward return elastic force, so that the driving block 18 moves upward and is reset, and the passive closing slider 17 driven downward by the driven block 18 moves inward and resets in the cavity area inside the concave template 7. At the same time, cylinder 2 can push up the lower die stripping plate 20, so that the lower die stripping plate 20 and the lower die inner stripper 19 move upward together, so that the water pump cavity 8 after the stamping inner closing process can be easily removed from the upper top of the driving block 18 and the passive closing slider 17, so that the water pump cavity 8 after the inner closing process is easy to demould, the production efficiency is high, and the product demoulding is safe, stable and reliable.

[0065] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A water pump cavity slider closing forming die assembly, comprising an upper die assembly and a lower die assembly, wherein the upper die assembly is connected to the upper pressing plate of the punch press, and the lower die assembly is connected to the lower pushing plate of the punch press, characterized in that: Also includes: The upper die assembly includes a pneumatic pressure rod limiting assembly and an upper die inner clamping linkage assembly. The lower part of the pneumatic pressure rod limiting assembly is connected to the upper die inner clamping linkage assembly. A cylinder 1 is provided on the upper part of the pneumatic pressure rod limiting assembly. The cylinder 1 pushes the pneumatic pressure rod limiting assembly downward, so that the pneumatic pressure rod limiting assembly and the upper die inner clamping linkage assembly are pressed onto the water pump cavity to be processed as a whole. The lower die set comprises a pad die clamping assembly, a driving slider spring assembly, a passive closing slider and a liftable inner stripping assembly. The lower portion of the pad die clamping assembly is arranged on the lower pushing plate of the punch press. The pad die clamping assembly comprises a lower fixed plate. A cavity area is provided in the middle of the lower fixed plate. A liftable inner stripping assembly is provided in the cavity area. The driving slider spring assembly is provided inside the middle area of ​​the liftable inner stripping assembly. A passive closing slider is provided between the driving slider spring assembly and the middle area of ​​the liftable inner stripping assembly. The upper portion of the driving slider spring assembly can be placed on a water pump cavity to be processed. The driving slider spring assembly can drive the passive closing slider so that the passive closing slider performs inner closing processing on the water pump cavity to be processed inside the middle area of ​​the liftable inner stripping assembly. The driving slider spring assembly can facilitate demoulding of the water pump cavity after inner closing processing.

2. A water pump cavity slider closing forming die set according to claim 1, characterized in that: The upper die set has a pneumatic pressure rod limit assembly and an upper die inner clamping linkage assembly, the pneumatic pressure rod limit assembly has a hitting rod, the upper part of the hitting rod is connected to the cylinder, the lower part of the hitting rod is connected to the limiting rod, the lower part of the limiting rod is connected to the upper die inner clamping linkage assembly, the upper die inner clamping linkage assembly has an upper die inner stripping piece, The outer side of the upper part of the hitting rod is provided with an upper die seat, which can be connected to the upper pressing plate of the punch press, the lower part of the upper die seat is connected with an upper pad, the lower part of the upper pad is connected with an upper clamping plate, and the lower part of the upper clamping plate is connected with an upper fixing plate. The upper fixing plate is internally connected with a punch pad, and the upper portion of the punch pad is connected to the inner side of the lower portion of the upper clamping plate. The lower part of the punch pad is connected to an upper punch, and the lower bottom of the upper punch is wedge-shaped. The wedge shape of the lower bottom of the upper punch matches the shape of the bottom of the water pump cavity to be processed. The upper die inner stripper is entirely located on the inner side of the punch pad and the upper fixed plate, and the upper die inner stripper can move upward or downward along with the limiting rod and the hitting rod.

3. A water pump cavity slider closing forming die set according to claim 2, characterized in that: A small pressure piece for cavity positioning is also provided below the stripping piece in the upper die.

4. A water pump cavity slider closing forming die set according to claim 1, characterized in that: The lower die set includes a pad die clamping assembly, a driving slider spring assembly, a passive closing slider and a liftable inner stripping assembly. The pad die clamping assembly in the lower die set includes a lower die base, the bottom of the lower die base can be connected to the lower push plate of the punch press, the lower die base is connected with a lower pad, the lower pad is connected with a lower clamping plate, the lower clamping plate is connected with a lower fixed plate, the lower fixed plate is connected with a die pad, and the die pad is connected with a die template. The lower fixed plate, the die pad and the middle inner side of the die plate all have a cavity area. The driving slider spring assembly and the passive closing slider are both arranged in the cavity area of ​​the lower fixed plate. A liftable inner stripping assembly is arranged between the outer side of the driving slider spring assembly and the inner cavity area of ​​the die pad. The liftable inner stripping assembly and the inner side of the die plate can accurately position the lower surrounding area of ​​the water pump cavity to be processed.

5. A water pump cavity slider closing forming die set according to claim 4, characterized in that: The driving slider spring assembly in the lower die assembly includes a return spring component, the lower portion of which is mounted on the bottom of the cavity area of ​​the die pad, the upper portion of which is provided with a connecting top block component, a sliding seat component is provided on the outer sides of the return spring component and the connecting top block component, the middle of the sliding seat component has a hollow area, and the driving block component is installed in the hollow area of ​​the sliding seat component. The driving block is generally in a shape of being larger at the top and smaller at the bottom. The lower portion of the driving block passes through the hollow area in the middle of the sliding seat. The lower portion of the driving block is connected to the upper top of the connecting top block. The driving block can move downward as the return spring is compressed, or can move upward as the return spring rebounds. A passive closing slider is provided on the outer side of the upper portion of the driving block. The driving block can press down the passive closing slider so that the passive closing slider moves outward in the cavity area inside the concave template. The outer sides of the upper tops of the driving block and the passive closing sliding block can be provided with a cover for the water pump cavity to be processed.

6. A water pump cavity slider closing forming die set according to claim 4, characterized in that: The liftable inner stripping assembly in the lower die assembly comprises a lower die inner stripping piece and a lower die stripping plate, which are integrally mounted in the cavity area on the inner side of the die backing plate. The lower die inner stripping piece and the lower die stripping plate are integrally located on the outer side of the driving slider spring assembly. The upper portion of the lower die inner stripping piece and the lower die stripping plate can accurately limit the area around the lower bottom of the water pump cavity to be processed. A second cylinder is provided on the outer side of the bottom of the lower die stripping plate, and the second cylinder can push the lower die stripping plate upward, so that the lower die stripping plate and the lower die inner stripping piece move upward together.

7. A water pump cavity slider closing forming die set according to any one of claims 1, 4 and 5, characterized in that: The lower outer side of the passive closing slider is provided with an inward-bending slope surface, and the angle between the inward-bending slope surface and the longitudinal vertical surface of the lower part of the passive closing slider is in the range of 10° to 45°. The passive closing slider can be driven by the driving block by relying on the downward pressure of the upper die inner stripping member in the upper die group, and then move outward along the area between the upper part of the slide member and the upper part of the liftable inner stripping component.

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