CN221158473U - Diaphragm pump inlet tube production mould - Google Patents

Abstract

The utility model relates to the field of pump body molds and discloses a diaphragm pump water inlet pipe production mold, which comprises an upper mold and a bottom mold, wherein a first cavity and a second cavity are formed in the upper mold and the bottom mold, a material injection port communicated with the first cavity is formed in the upper mold and the bottom mold, a first through port and a second through port are formed in the first cavity and the second cavity, a third through port communicated with the second cavity is formed in the inner wall of the second cavity, a first mold core is arranged in the first through port and the fourth through port in a penetrating manner, a second mold core is arranged in the second through port and the fifth through port in a penetrating manner, and a third mold core is arranged in the third through port in a penetrating manner. The water inlet pipe is divided into two sections for sectional production, the inner cavity of the water inlet pipe needing to be bent is divided into sections for manufacturing the inner die, the inner contour of the water inlet pipe is formed in a direct insertion mode, the first through hole and the second through hole which are arranged in a back-to-back mode can avoid interference between the first die core and the second die core, and the die core is taken out along the axial direction of the corresponding die core during die stripping, so that the die stripping can be completed, and the purpose of die forging for producing the water inlet pipe is achieved.

Description

Diaphragm pump inlet tube production mould

Technical Field

The utility model relates to the field of pump body molds, in particular to a diaphragm pump water inlet pipe production mold.

Background

The diaphragm pump separates the body to be infused from the plunger and the pump cylinder by a film, thereby protecting the plunger and the pump cylinder. The water inlet pipe is one of important components of the diaphragm pump and is used for conveying liquid into the diaphragm pump. The water inlet pipe comprises a water inlet pipe section, pipe orifices are arranged at the two ends of the water inlet pipe section in an extending mode relative to the bending arc of the water inlet pipe section, and a water inlet is formed in the middle of the water inlet pipe section along the radial direction of the water inlet pipe. For this reason, the diaphragm pump is generally manufactured by performing a process assembly by hot press molding or the like. However, the hot press forming equipment is needed, so that the equipment cost is high, the hot press operation needs relatively high technical level and experience, and the conditions of cracks, deformation and the like are easily caused by inaccurate thickness and temperature control due to imprecision of the technology, so that the technical threshold is high, and the manufacturing difficulty of the water inlet pipe is high. The forging method is a casting method for obtaining the forging by molding the blank on special forging equipment by using a die, and the forging produced by the method has the advantages of accurate size, small machining allowance, high productivity, low cost, low operation and technical content and easy manufacture. For this purpose, the pump body, the valve body are often produced by means of swaging. However, since the inner cavity structure of the inlet pipe of the diaphragm pump is not straight, and the inlet pipe is provided with two pipe openings and three openings of the water inlet, and the two pipe openings are positioned at two ends of the inlet pipe section and are curved relative to the inlet pipe section, even if the segmented inner mold is arranged, the inner mold is difficult to take out without damaging the inlet pipe during demolding, thereby causing difficulty in demolding.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: the production die for the diaphragm pump water inlet pipe solves the problem that the die forging water inlet pipe is difficult to demould.

In order to solve the technical problems, the utility model adopts a technical scheme that: the production die of the diaphragm pump water inlet pipe comprises a bottom die and an upper die, wherein a first cavity for forming a first pipe section of the water inlet pipe and a second cavity for forming a second pipe section of the water inlet pipe are formed in the upper die and the bottom die, the first pipe section of the water inlet pipe comprises a first main body section and a first pipe orifice arranged on the first main body section, the second pipe section comprises a second main body section and a second pipe orifice and a water inlet arranged on the second main body section, a material injection port communicated with the first cavity and the second cavity is formed in the upper die and the bottom die, one end of the first cavity corresponding to the first connecting end and one end of the second cavity corresponding to the second connecting end are distributed back to each other and extend through two sides of the upper die and the bottom die respectively along the axial direction of the first cavity and the second cavity, a third port and a second port are formed on the inner wall of the second cavity corresponding to the water inlet port in an outward extending way along the radial direction of the first pipe orifice, the first cavity is communicated with the second cavity at the position of the first pipe orifice and the second cavity is formed along the second pipe orifice, the first cavity is communicated with the second cavity along the axial direction of the second pipe orifice along the second pipe orifice, the second pipe orifice is formed along the second pipe orifice along the axial direction of the second pipe orifice, and the two sections are separated from each other along the two sides of the second pipe port along the axial direction of the second pipe orifice and can be separated from each other along the outside the inlet pipe; the first port and the fourth port are internally provided with a first mold core which extends into the first cavity and is matched with the inner contour of the first pipe section, the second port and the fifth port are internally provided with a second mold core which extends into the second cavity and is matched with the inner contours of the second main body section and the second pipe opening, the third port is internally provided with a third mold core which extends into the second cavity and is matched with the inner contour of the water inlet, so that the first main body section, the first pipe opening, the second main body section and the inner cavity of the water inlet are respectively configured, the bending parts are respectively split into molds, the water inlet can be produced in a die forging mode, the mold cores are respectively split during the split, the problem of difficult die forging is avoided, the die forging mode can be completed by only injecting molten metal into the cavity for forming, and the two pipe sections can be connected together by welding and the like after the forming.

Furthermore, two positioning grooves are formed in one side face, opposite to each other, of the upper die and the bottom die, and the two positioning grooves in the upper die and the bottom die are distributed diagonally to the first die cavity and the second die cavity, so that the upper die and the bottom die can be aligned quickly during assembly, and the mounting pressure is reduced.

Further, the opposite ends of the first cavity and the second cavity are distributed at intervals to form two independent spaces, so that two independent pipe sections are formed during die forging and forming, and the die is easier to set.

Furthermore, a communicating cavity channel which is communicated with the first cavity and the second cavity is formed on the upper die and the bottom die, and the material injection port is communicated with the communicating cavity channel, so that molten metal is injected into the first cavity and the second cavity while only one material injection port is opened.

Further, two mounting grooves which are respectively communicated with the first cavity and the second cavity are symmetrically formed in the position, opposite to the two mounting seats of the water inlet pipe, on one side of the upper die and the bottom die, opposite to the two mounting seats of the water inlet pipe, and the two mounting grooves on the upper die and the bottom die are communicated, so that after the upper die and the bottom die are buckled with each other, the two mounting grooves corresponding to the first cavity are communicated, and the two mounting grooves corresponding to the second cavity are communicated; the production die for the water inlet pipe of the diaphragm pump further comprises two side dies, wherein two ends of one side die are respectively inserted into two mounting grooves opposite to the first die cavity, two ends of the other side die are respectively inserted into two mounting grooves opposite to the second die cavity so as to block the mounting grooves respectively, and grooves matched with the outer contour of the mounting seat are concavely formed on one side surface of the side die facing the fourth port so as to form corresponding die cavities together with the upper die and the bottom die in a surrounding mode, so that better demolding is facilitated.

Further, two on the side of mounting groove back to the fourth port towards keeping away from mounting groove one side protruding be equipped with the side form be the connecting block of echelonment to in order to provide the gripping point in order better drawing of patterns when the drawing of patterns.

Further, the first mold core comprises a first inner mold penetrating through the first through hole and extending into the first cavity for forming the inner contour of the first main body section, and a second inner mold penetrating through the fourth through hole where the first cavity is located and extending into the first cavity for forming the inner contour of the first pipe orifice, and the first inner mold and the second inner mold are mutually abutted against each other so as to divide the two pipe sections into two parts from the bending part for installation and demolding, thus the bending part can be prevented from obstructing the water inlet pipe after the mold cores are peeled off and formed, the demolding difficulty is effectively reduced, and the formed water inlet pipe is prevented from being damaged; the inner angle side of one end of the first inner die, which is propped against the second inner die, is sequentially divided into a plurality of first movable blocks along the axial direction of the third port, so that demolding is more convenient, and particularly demolding is easier for the inner angle part.

Further, the second mold core comprises a third inner mold penetrating through the second opening and extending into the second cavity for forming the inner contour of the second main body section, and a fourth inner mold penetrating through the fifth opening of the second cavity and extending into the second cavity for forming the inner contour of the second pipe orifice, so that the demolding is convenient due to the same effects as the first inner mold and the second inner mold.

Further, the inner angle side of one end of the third inner die, which is propped against the fourth inner die, is sequentially divided into a plurality of second movable blocks along the axial direction of the third port, so that the second mold core is conveniently separated from the inner cavity of the water inlet pipe on the premise of not damaging the water inlet pipe after the water inlet pipe is formed.

Further, the third mold core comprises a third end cover penetrating through and blocking the third port and a fifth inner mold extending from the third end cover towards one end in the second cavity for forming the inner contour of the water inlet, and the fifth inner mold is propped against the third inner mold and is inserted and assembled with the third end cover to form a pipe section where the water inlet of the water inlet pipe is located, so that the assembly difficulty is simplified.

Further, a first slot is formed on one end of the fifth inner die facing the third inner die along the axial direction of the fifth inner die in a concave manner, the third die core further comprises a third movable block with one end inserted in the first slot, and a second slot for inserting the other end of the third movable block into the second slot is formed on the position, opposite to the third movable block, of the third inner die along the axial direction of the fifth inner die, on the third inner die, so that the die cores are positioned before die assembly connection, and the assembly difficulty is reduced.

The production die for the diaphragm pump water inlet pipe has at least the following beneficial effects: through setting up first die cavity and second die cavity to divide into two parts with whole inlet tube and die forging, can set up respectively corresponding interior mould through first link, first mouth of pipe, second mouth of pipe and the water inlet of first pipe section, first mouth of pipe, second mouth of pipe, so that the interior profile of inlet tube is formed through the mode of cut straightly, and first opening and the second opening of setting dorsad can avoid producing the hindrance between first mold core and the second mold core, take out the mold core along the axial direction of corresponding mold core when the drawing of patterns and can accomplish the drawing of patterns, in order to realize the purpose of die forging production inlet tube.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of one of the prior art inlet pipes of a diaphragm pump;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is an exploded view of the present utility model;

FIG. 4 is an exploded view of the top mold, bottom mold and side mold of the present utility model;

FIG. 5 is a schematic view of the structure of the present utility model after the upper mold is hidden;

FIG. 6 is a top cross-sectional view of the present utility model;

Fig. 7 is a front cross-sectional view of the present utility model.

The meaning of the reference numerals in the drawings are:

A first tube section-11 a; a second pipe section-11 b; a first nozzle-12; a second nozzle-13; a water inlet 14; a mounting seat-15; a first body section-16; a second body section-17;

Upper die-2 a; a bottom die-2 b; a first cavity-21; a second cavity-22; a material injection port-23; positioning groove-24; a first port-251; a second port-252; a third port-253; fourth port-254; fifth port-255; a communication channel-26; a mounting groove-27; a first card slot-281; a second card slot-282;

A first mold core-3; a first end cap-31; a first mandrel 32; fourth loose piece-33; a second end cap-34; a second axial core-35; a first loose piece-36;

A second mold core-4; a fourth end cap-41; post-411; a second slot-412; a third axial core-42; fifth loose piece-43; a fifth end cap-44; a fourth shaft core-45; a second loose piece-46;

A third mold core-5; a third end cap-51; third slot-511; a fifth inner mold-52; first slot-521; a third loose piece-53; extension segment-54;

Side mold-6; and a connecting block-61.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, a water inlet pipe of one of the diaphragm pumps in the prior art is shown, the water inlet pipe comprises a first pipe section 11a and a second pipe section 11b, the first pipe section 11a comprises a first main body section 16 with a cylindrical inner cavity and a first pipe orifice 12 with a cylindrical inner cavity, the second pipe section 11b comprises a second main body section 17 with a cylindrical inner cavity, a second pipe orifice 13 with a cylindrical inner cavity, and a water inlet 14 perpendicular to the second main body section 17 and one end of which is connected to the second main body section 17, the end of the first main body section 16 away from the first pipe orifice 12 is used as a first connection end, and the end of the second main body section 17 away from the second pipe orifice 13 is used as a second connection end. The first nozzle 12 is bent and extended in a horizontal direction relative to the first main body section 16 and is in a curved arc shape, the second nozzle 13 is bent and extended in a horizontal direction relative to the second main body section 17 and is in a curved arc shape, and the first nozzle 12 and the second nozzle 13 are curved towards the same side. Protruding at the top and bottom of the ends of the first nozzle 12 and the second nozzle 13, extending away from each other, so that the edges of the first nozzle 12 and the second nozzle 13 form diamond-shaped flanges. Two mirror-image mounting seats 15 are formed on the sides of the first and second body sections 16, 17 facing away from the first and second nozzles 12, 13, extending vertically in a direction perpendicular to the axial direction of the first and second body sections 16, 17. The first main body section 16, the second main body section 17, the first pipe orifice 12, the second pipe orifice 13 and the two mounting seats 15 of the whole water inlet pipe are arranged in a mirror image distribution along the horizontal direction by taking the central axes of the first main body section 16 and the second main body section 17 as axes. The water inlet 14 is positioned on the second pipe section and is formed at the top of the water inlet pipe section 11, and the water inlet 14 is communicated with the inner cavity of the water inlet pipe section 11.

As shown in fig. 2 to 7, the diaphragm pump water inlet pipe production die of the present utility model comprises an upper die 2a and a bottom die 2b which can be fastened to each other, a first die core 3 which is arranged on the upper die 2a and the bottom die 2b and extends into the first die cavity 21 to conform to the inner contour of the first pipe section 11a for forming the first pipe section 11a, a second die core 4 which is arranged on the upper die 2a and the bottom die 2b and extends into the second die cavity 22 to conform to the inner contour of the second pipe section 11b for forming the second pipe section 11b, and a third die core 5 which is arranged on the upper die 2a and extends into the second die cavity 22 to conform to the inner contour of the water inlet 14 for forming the water inlet 14, wherein a first die cavity 21 which conforms to the outer contour of the upper half of the first pipe section 11a and a second die cavity 22 which conforms to the outer contour of the upper half of the second pipe section 11b are respectively formed on the upper die 2 a; a first cavity 21 matched with the outer contour of the lower half part of the first pipe section 11a and a second cavity 22 matched with the outer contour of the lower half part of the second pipe section 11b are respectively formed on the bottom die 2b, the first cavity 21 on the upper die 2a and the first cavity 21 on the bottom die 2b are in mirror image distribution, and the second cavity 22 on the upper die 2a and the second cavity 22 on the bottom die 2b are in mirror image distribution. And the first cavity 21 and the second cavity 22 can be used for forming the inner contour structure of the water inlet pipe by respectively arranging corresponding inner molds from two perpendicular directions and enabling the inner molds to mutually abut when the inner contour of the water inlet pipe is built.

When the upper die 2a and the bottom die 2b are buckled with each other during assembly, the two first cavities 21 are folded to form a complete outer contour cavity of the first pipe section 11a, the two second cavities 22 are folded to form a complete outer contour cavity of the second pipe section 11b, the first die core 3 and the third die core 5 are sequentially arranged in the first cavity 21 in a penetrating manner, the second die core 4 is arranged in the second cavity 22 in a penetrating manner, and auxiliary objects such as glue and the like which can enable all the dies to be connected are used for further connection after alignment, so that all gaps are blocked, and a sealed space is formed among the first cavity 21, the first die core 3 and the third die core 5, and the second die core 22 and the second die core 4 respectively. A filling port 23 communicating the first cavity 21 and the second cavity 22 is formed in the upper die 2a and/or the bottom die 2b to fill the first cavity 21 and the second cavity 22 with molten metal until cooling is performed after filling. After the first pipe section 11a and the second pipe section 11b are completely molded, the upper die 2a and the bottom die 2b are firstly taken down, then the first die core 3, the second die core 4 and the third die core 5 are sequentially taken out, and finally the first connecting end and the second connecting end are aligned and connected.

The upper die 2a and the bottom die 2b are both in cuboid structures, a first cavity 21 and a second cavity 22 of the upper die 2a are both formed on the bottom surface of the upper die 2a, and a first cavity 21 and a second cavity 22 of the bottom die 2b are both formed on the top surface of the bottom die 2 b. Preferably, two positioning grooves 24 are formed on one side surface of the upper die 2a and the bottom die 2b, which are opposite to each other, the two positioning grooves 24 on the upper die 2a and the two positioning grooves 24 on the bottom die 2b are diagonally distributed on two sides of the first cavity 21 and the second cavity 22, and the positioning grooves 24 on the upper die 2a and the bottom die 2b are arranged in a mirror image. When assembling, firstly, two positioning grooves 24 on an upper die 2a and a bottom die 2b are aligned with each other, a pin shaft which is matched with the positioning grooves 24 is inserted between the two positioning grooves 24, the length of the pin shaft is larger than the depth of any positioning groove 24 and smaller than or equal to the sum of the lengths of the two positioning grooves 24, when the pin shaft is inserted on two non-collinear positioning grooves 24, the other two positioning grooves 24 are aligned with the pin shaft so that the other end of the pin shaft is inserted in the other two positioning grooves 24, the first connecting end and the second connecting end are distributed in opposite directions in a back-to-back mode, the first connecting ends where the first cavity 21 and the second cavity 22 are located extend along the axial direction of the first main body section 16, the second connecting end of the second cavity 22 extends along the axial direction of the second main body section 17, and one ends of the first cavity 21 and the second cavity 22 extend through the upper die 2a and the bottom die 2b in opposite directions, so that the first cavity 21 forms a first through hole 251 for the first die core 3 to pass through therein at a position of passing through the upper die 2a and the bottom die 2b, and the second cavity 22 forms a second through hole 252 for the second die core 4 to pass through therein at a position of passing through the upper die 2a and the bottom die 2 b. A fourth opening 254 is formed on the end of the first cavity 21 away from the first opening 251 and extends outward (toward the side away from the first cavity 21) in the axial direction of the first nozzle 12, while a fifth opening 255 is formed on the end of the second cavity 22 away from the second opening 252 and extends outward in the axial direction of the second nozzle 13, and the fourth opening 254 and the fifth opening 255 are preferably oriented toward the same side and may be disposed opposite to each other. And a third port 253 for the third mold core 5 to be inserted therein is formed in the inner wall of the second cavity 22 of the upper mold 2a or the bottom mold 2b at a position corresponding to the water inlet 14, extending in the radial direction of the located second main body section 17 toward the side away from the second cavity 22 and penetrating the upper mold 2a or the bottom mold 2b such that the second cavity 22 penetrates the upper mold 2a or the bottom mold 2b at another position. The first mold core 3 extends into the first cavity 21 after being inserted into the first through hole 251, and the second mold core 4 extends into the second cavity 22 after being inserted into the second through hole 252, so as to form a first molding cavity with the shape and contour consistent with those of the first pipe section 11a together with the first cavity 21. The third mold core 5 extends into the second cavity 22 and abuts against the second mold core 4 after being inserted into the third port 253, so as to form a second molding cavity with the shape and the contour consistent with those of the second pipe section 11b together with the second cavity 22.

Preferably, the opposite ends of the first cavity 21 and the second cavity 22 are spaced apart, so that the first cavity 21 and the second cavity 22 are independent cavities, and a large amount of time is not required to separate the portion between the first pipe section 11a and the second pipe section 11b after the die forging, thereby reducing the workload. It should be noted that the first cavity 21 and the second cavity 22 may be disposed adjacently to be in contact with each other, and the same purpose can be achieved except for the need for separate division after molding.

Preferably, the injection port 23 is divided into two parts and is arranged on one side surface of the upper die 2a and the bottom die 2b opposite to each other in a mirror image manner so as to jointly form the injection port 23, and the injection port 23 may be formed on the upper die 2a or the bottom die 2b separately. A communication channel 26 for communicating the first cavity 21 and the second cavity 22 is formed in the upper die 2a and/or the bottom die 2b, and when the communication channel 26 is formed in the upper die 2a and the bottom die 2b, the communication channel is formed in the same manner as the injection port 23. In the content defined by the present embodiment, the injection port 23 is perpendicular to the communication channel 26 and is communicated with the communication channel 26, so that molten metal can be simultaneously transferred to the first cavity 21 and the second cavity 22 through one injection port 23 and the communication channel 26, and die forging is completed.

As shown in fig. 2 to 5, since the mounting base 15 has a structure recessed toward one side of the water inlet pipe section 11 at a position of a side middle portion thereof away from the water inlet pipe section 11, only the upper die 2a and the bottom die 2b are provided, and the recessed structure of the mounting base 15 may cause difficulty in stripping the upper die 2a and the bottom die 2b with respect to the water inlet pipe section 11 when stripping is performed. For this reason, in the content defined in the present embodiment, two mounting grooves 27 are formed on the opposite sides of the side faces of the upper die 2a and the bottom die 2b facing away from the fourth opening 254 and the fifth opening 255 along the axial direction perpendicular to the first cavity 21, two mounting grooves 27 are formed on the upper die 2a facing away from the positions where the two mounting seats 15 are located, and the bottom surfaces of the two upper grooves are arranged to be open; the two upper grooves are respectively communicated with a first cavity 21 and a second cavity 22 of the upper die 2 a. The two mounting grooves 27 on the bottom die 2b are lower grooves, the bottoms of the two lower grooves are arranged in an open mode, and the two lower grooves are respectively communicated with the first cavity 21 and the second cavity 22 on the bottom die 2 b. The upper groove and the lower groove are arranged in a mirror image distribution manner, and after the upper die 2a and the bottom die 2b are buckled, the two upper grooves and the two lower grooves are mutually aligned and communicated. The production mold of the water inlet pipe of the diaphragm pump of the utility model further comprises two side molds 6 which are matched with any one of the upper groove and the lower groove in shape and size, wherein two ends of one side mold 6 are respectively inserted into two mounting grooves 27 communicated with the first cavity 21, two ends of the other side mold 6 are respectively inserted into two mounting grooves 27 communicated with the second cavity 22, namely, the upper half parts of the two side molds 6 are respectively inserted into the two upper grooves, and the lower half parts of the two side molds 6 are respectively inserted into the two lower grooves, so that a cuboid structure is formed after the whole upper mold 2a, the lower mold and the side molds 6 are assembled. And a cavity structure consistent with part of the outer contour structure of the mounting seat 15 is concavely formed on one side surface of the two side dies 6 facing the first cavity 21 and the second cavity 22 respectively, so that the cavity structure, the upper die 2a and the bottom die 2b are jointly enclosed to form the first cavity 21 and the second cavity 22, meanwhile, the arrangement of the side dies 6 enables the concave part corresponding to the middle part of the mounting seat 15 to be formed by the side dies 6, and the stripping direction of the side dies 6 is different from that of the upper die 2a and the bottom die 2b, so that the mounting seat 15 can be stripped along the stripping direction perpendicular to the upper die 2a and the bottom die 2b, thereby greatly reducing the stripping difficulty. Preferably, a connecting block 61 which is stepped with the side mold 6 is formed on one side surface of the two mounting grooves 27 facing away from the fourth opening 254 and the fifth opening 255 in a protruding manner, so as to facilitate the handling of the side mold 6 during the assembly and the demolding.

As shown in fig. 3 and 5 to 7, the first mold core 3 includes a first inner mold penetrating through the first through hole 251 and extending into the first cavity 21 to conform to the inner contour of the first main body section 16 for forming the inner contour of the first main body section 16, and a second inner mold penetrating through the fourth through hole 254 where the first cavity 21 is located and extending into the first cavity 21 to conform to the inner contour of the first pipe orifice 12 for forming the inner contour of the first pipe orifice 12, wherein the first inner mold and the second inner mold are abutted against each other to form a complete inner contour structure of the first pipe section 11 a. The first inner mold includes a first end cap 31 for blocking the first through hole 251, and a cylindrical first shaft core 32 integrally formed with the first end cap 31 and extending into the first cavity 21, wherein the diameter of the first end cap 31 is larger than that of the first shaft core 32, and the first end cap 31 is located outside the first through hole 251 when completely assembled. The outer contour of the portion of the first core 32 extending into the first cavity 21 corresponds to the inner contour of the first body section 16 of the first pipe section 11a to be adapted. A fourth movable block 33 is movably attached to one end of the first shaft core 32 near the first end cover 31, a first clamping groove 281 for clamping the fourth movable block 33 is formed in mirror image at the position, opposite to the fourth movable block 33, on the upper die 2a and the bottom die 2b, the first clamping groove 281 is located on one side surface of the upper die 2a and the bottom die 2b facing the first end cover 31 so as to penetrate through the outer side, one side surface of the fourth movable block 33 facing the first end cover 31 is flush with one side surface of the upper die 2a and the bottom die 2b, and the first end cover 31 abuts against the fourth movable block 33 so as to position the first shaft core 32. The second inner mold comprises a second end cover 34 for blocking the fourth opening 254 and a cylindrical second core 35 integrally formed with the second end cover 34 and extending into the first cavity 21, wherein the diameter of the second end cover 34 is larger than that of the second core 35, and the second end cover 34 is positioned outside the fourth opening 254 when the assembly is completed. The outer contour of the portion of the second core 35 extending into the first cavity 21 conforms to the inner contour of the first nozzle 12 to fit.

Since the connection between the first inner mold and the second inner mold is curved, the inner angle at the end where the first core 32 and the second core 35 abut against each other is also an arc angle, and therefore, when the first core 32 and the second core 35 divide the whole first mold core 3 into two, the arc angle at the inner angle will not overlap with the first core 32 and the second core 35 which are in cylindrical structures, and the arc portion is arranged on any core, which results in difficult demolding. Therefore, the inner angle side of one end of the first inner mold, which is abutted against the second inner mold, is sequentially divided into a plurality of first movable blocks 36 along the axial direction of the third port 253, so that when the demolding is performed, the first shaft core 32 and the second shaft core 35 can be peeled off first, and finally, the demolding of all the first mold cores 3 can be completed by taking out each first movable block 36 at one time, the water inlet pipe is not damaged, and the integrity of the water inlet pipe is ensured.

The second mold core 4 comprises a third inner mold penetrating at the second through hole 252 and extending into the second cavity 22 and conforming to the inner contour of the second main body section 17 for forming the inner contour of the second main body section 17, and a fourth inner mold penetrating at the fifth through hole 255 where the second cavity 22 is located and extending into the second cavity 22 and conforming to the inner contour of the second nozzle 13 for forming the inner contour of the second nozzle 13. The third inner mold and the fourth inner mold are abutted against each other to be able to form the inner contour structure of the second pipe section 11 b. The third inner mould comprises a fourth end cap 41 for blocking the second port 252 and a cylindrical third axial core 42 extending into the second mould cavity 22, the outer contour of the portion of the third axial core 42 extending into the second mould cavity 22 conforming to the inner contour of the second body section 17. The side of the fourth end cap 41 facing the second cavity 22 extends along the axial direction of the second port 252 towards the inside of the second cavity 22 to form a cylindrical protruding column 411, the diameter of the fourth end cap 41 is larger than that of the protruding column 411 and the diameter of the third shaft core 42, after assembly, the protruding column 411 is positioned in the second port 252, and the fourth end cap 41 is positioned outside the second port 252. A second slot 412 adapted to the third shaft core 42 is concentrically formed on a side of the boss 411 facing the third shaft core 42, and the third shaft core 42 is inserted into the second slot 412 when assembled to limit the degree of freedom between the fourth end cap 41 and the third shaft core 42 in the radial direction when the mold is assembled, thereby reducing the possibility of partial dispersion before the parts are connected and sealed, and thus reducing the difficulty of assembly. And a fifth movable block 43 is movably attached to one end of the third shaft core 42 near the fourth end cover 41, and a second clamping groove 282 for clamping the fifth movable block 43 is formed in mirror image at the position, opposite to the fifth movable block 43, on the upper die 2a and the bottom die 2b, the second clamping groove 282 is positioned on one side surface of the upper die 2a and the bottom die 2b facing the fourth end cover 41 so as to penetrate through the outer side, one side surface of the fifth movable block 43 facing the fourth end cover 41 is flush with one side surface of the upper die 2a and the bottom die 2b, and the fourth end cover 41 abuts against the fifth movable block 43 so as to be convenient for positioning the position of the third shaft core 42 during assembly. And the fourth inner mold comprises a fifth end cover 44 for blocking the fifth through hole 255 and a fourth cylindrical shaft core 45 integrally formed with the fifth end cover 44 and extending into the second cavity 22, wherein the outer contour of the part of the fourth shaft core 45 extending into the second cavity 22 is consistent with the inner contour of the second pipe orifice 13 for adapting.

The inner angle side of one end of the third inner mold, which is abutted against the fourth inner mold, is sequentially divided into a plurality of second loose pieces 46 along the axial direction of the third port 253, so that when the demolding is performed, the third shaft core 42 and the fourth shaft core 45 can be peeled off first, the demolding of all the second mold cores 4 can be completed by taking out each second loose piece 46 for the last time, the water inlet pipe is not damaged, and the integrity of the water inlet pipe is ensured.

The third mold core 5 includes a third end cap 51 penetrating and blocking the third port 253, a fifth inner mold 52 extending from the third end cap 51 toward one end in the second cavity 22 and abutting against the third inner mold, and a third movable block 53 inserted and fitted with the fifth inner mold 52, so as to jointly form an inner contour structure of the entire second pipe section 11 b. Preferably, a third slot 511 is formed on an end of the third end cap 51 facing the fifth inner die 52 to be recessed in an axial direction of the fifth inner die 52, and an end of the fifth inner die 52 is inserted into the third slot 511 to be inserted and fit between the fifth inner die 52 and the third end cap 51. Preferably, a first slot 521, which is adapted to the third movable block 53 and into which one end of the third movable block 53 is inserted, is formed in the fifth inner mold 52 to be concave on a side facing the third inner mold. The third shaft core 42 is provided with a second slot 412 which is matched with the third movable block 53 and is used for inserting one end of the third movable block 53 into the second slot 412 along the axial direction of the fifth inner mold 52 at the position opposite to the third movable block 53, so that after one end of the third movable block 53 is inserted into the first slot 521, the other end of the third movable block 53 is inserted into the second slot 412, and therefore, before all parts are connected together by using glue and other substances, a basic connection state can be provided between the third mold core 5 and the second mold core 4, and mutual limitation between the third mold core 5 and the second mold core 4 is realized. The third end cap 51 is formed on the outer sidewall thereof to extend in a direction perpendicular to the axial direction of the third end cap 51 to form an extension 54, and a recess through which the extension 54 is inserted is concavely formed on the upper die 2a at a position corresponding to the extension 54 to facilitate positioning of the third end cap 51 when it is assembled, and at the same time, to be easily pried apart from the upper die 2a by the extension 54 when it is released.

One embodiment of the production die for the water inlet pipe of the diaphragm pump is as follows: firstly, the first mold core 3, the second mold core 4 and the third mold core 5 are assembled in sequence, all parts are adhered by using auxiliary connecting agents, all mold cores are arranged on the upper mold 2a or the bottom mold 2b, the bottom mold 2b or the upper mold 2a is aligned and combined through a positioning groove 24, finally, the first molding cavity and the second molding cavity are connected by using the auxiliary connecting agents to form a relatively sealed space, and after the molten metal is filled through a material filling opening 23, the cooling molding is waited. During demolding, the upper die 2a, the bottom die 2b and the side die 6 are firstly sequentially taken down, then the first end cover 31, the second end cover 34, the third end cover 51 and the fourth end cover 41 are sequentially taken down, the first shaft core 32, the second shaft core 35 and the third shaft core 42 are sequentially pulled down, and finally the first movable block 36 and the second movable block 46 are taken down, so that the production and the manufacture of the water inlet pipe are completed.

Claims (10)

1. The utility model provides a diaphragm pump inlet tube production mould, includes die block and last mould, its characterized in that: the upper die and the bottom die are respectively provided with a first cavity for forming a first pipe section of the water inlet pipe and a second cavity for forming a second pipe section of the water inlet pipe, the first pipe section of the water inlet pipe comprises a first main body section and a first pipe orifice arranged on the first main body section, the second pipe section comprises a second main body section and a second pipe orifice and a water inlet arranged on the second main body section, one end of the first main body section far away from the first pipe orifice is a first connecting end, one end of the second main body section far away from the second pipe orifice is a second connecting end, the upper die and the bottom die are provided with a material injection port communicated with the first cavity and the second cavity, one end of the first cavity corresponds to one end of the first connecting end and one end of the second cavity corresponds to one end of the second connecting end and extends to penetrate through two sides of the upper die and the bottom die respectively along the axial direction of the first cavity and the second cavity, a first through port and a second through port are formed at the position corresponding to the water inlet on the inner wall of the second cavity along the radial direction outwards extends to form a third through port communicated with the second cavity, the first through port is formed at the position corresponding to the second through port and the second through port extends outwards along the axial direction along the second port and the second through port corresponds to the second port and the second port extends outwards corresponds to the second port;

The first mold core which extends into the first cavity and is matched with the inner contour of the first pipe section is arranged in the first through hole and the fourth through hole in a penetrating manner, the second mold core which extends into the second cavity and is matched with the inner contour of the second main body section and the second pipe opening is arranged in the second through hole and the fifth through hole in a penetrating manner, and the third mold core which extends into the second cavity and is matched with the inner contour of the water inlet is arranged in the third through hole in a penetrating manner.

2. The diaphragm pump inlet tube production die of claim 1, wherein: two positioning grooves are formed in one side face, opposite to each other, of the upper die and the bottom die, and the two positioning grooves in the upper die and the bottom die are diagonally distributed in the first cavity and the second cavity.

3. The diaphragm pump inlet tube production die of claim 1, wherein: one ends of the first cavity and the second cavity, which are opposite, are distributed at intervals.

4. A diaphragm pump inlet tube production die as claimed in claim 3, wherein: and the upper die and the bottom die are provided with a communicating cavity channel communicated with the first cavity and the second cavity, and the material injection port is communicated with the communicating cavity channel.

5. The diaphragm pump inlet tube production die of claim 1, wherein: the water inlet pipe is vertically connected with two mounting seats respectively arranged on the first pipe section and the second pipe section,

Two mounting grooves which are respectively communicated with the first cavity and the second cavity are symmetrically formed in the positions, corresponding to the two mounting seats of the water inlet pipe, on one side of the upper die, which is opposite to the fourth port, of the bottom die, and the mounting grooves on the upper die and the mounting grooves on the bottom die are communicated;

The mold further comprises two side molds, wherein two ends of one side mold are respectively inserted into two mounting grooves opposite to the first cavity, two ends of the other side mold are respectively inserted into two mounting grooves opposite to the second cavity, and grooves matched with the outer contour of the mounting seat are concavely formed on one side surface of the side mold facing the fourth port so as to form corresponding cavities together with the upper mold and the bottom mold.

6. The diaphragm pump inlet tube production die of claim 5, wherein: and a connecting block which is in a step shape with the side die is convexly arranged on one side surface of the mounting groove, which is opposite to the fourth port, towards one side far away from the mounting groove.

7. The diaphragm pump inlet tube production die of claim 1, wherein: the first mold core comprises a first inner mold penetrating the first through hole and extending into the first cavity for forming the inner contour of the first main body section, and a second inner mold penetrating the fourth through hole of the first cavity and extending into the first cavity for forming the inner contour of the first pipe orifice, wherein the first inner mold and the second inner mold are abutted against each other; the inner angle side of one end of the first inner die, which is propped against the second inner die, is sequentially divided into a plurality of first movable blocks along the axial direction of the third port.

8. The diaphragm pump inlet tube production die of claim 7, wherein: the second mold core comprises a third inner mold penetrating the second through hole and extending into the second cavity for forming the inner contour of the second main body section and a fourth inner mold penetrating the fifth through hole of the second cavity and extending into the second cavity for forming the inner contour of the second pipe orifice; the inner angle side of one end of the third inner die, which is propped against the fourth inner die, is sequentially divided into a plurality of second movable blocks along the axial direction of the third port.

9. The diaphragm pump inlet tube production die of claim 8, wherein: the third mold core comprises a third end cover penetrating and blocking the third port and a fifth inner mold extending from the third end cover towards one end in the second cavity for forming the inner contour of the water inlet, and the fifth inner mold is propped against the third inner mold and is in insertion fit with the third end cover.

10. The diaphragm pump inlet tube production die of claim 9, wherein: the first slot is formed on one end of the fifth inner die facing the third inner die along the axial direction of the fifth inner die in a concave manner, the third die core further comprises a third movable block with one end inserted in the first slot, and a second slot for inserting the other end of the third movable block into the second slot is formed on the position, opposite to the third movable block, of the third inner die along the axial direction of the fifth inner die.