CN218425056U - Composite forming die for reducing joint combined pipe fitting - Google Patents

Abstract

The utility model provides a reducing connects combination pipe fitting composite forming mould, this mould is through setting up die cavity symmetry parting respectively on cope match-plate pattern and lower bolster, combines the die core that the die cavity set up respectively along the axis both sides outward, realizes crowded rising + the high pressure water mode that takes shape in coordination that rises. The mould core is provided with the springback control round table body, and the process compensation is carried out on the port inward-turning phenomenon after the pipe fitting is flared, so that the size standard of the flared pipe fitting port is reliable, and the pipe fitting port is not shrunk and deformed; the mould cores are also provided with pushing end faces for providing symmetrical pushing pressure, the mould cores on two sides synchronously push towards the inside of the mould cavity, symmetrical squeezing and expanding actions are realized, the water injection tightness of the pipe fitting is improved, the water injection pressure is maintained, the pipe fitting has high symmetry and roundness after expansion, the outer wall is smooth, and the water caltrops are clear. The core print is provided with the end water injection hole to provide reinforcing water expansion force for water expansion at the end part, so that the pipe wall expansion operation of the pipe fitting close to the end port side is faster, the pipe fitting is more attached to a die cavity, and the pipe fitting is fuller in expansion.

Description

Composite forming die for reducing joint combined pipe fitting

Technical Field

The utility model relates to an crowded forming die field that rises and water rises, concretely relates to reducing connects combination pipe fitting composite forming die.

Background

The stainless steel water supply pipe has wide application, and is popularized and used in a plurality of fields such as automobile and ship, building water supply and drainage, floor heating engineering, urban gas, solar heat supply, fine mist fire control and the like. The stainless steel socket pipe fitting is designed and produced according to the structure and the size of an A.3 table in the national standard GB/T33926-2017, and the structure and the matching size are unified to ensure the market matching smoothness. The common production process of the reducing joint combined pipe fitting comprises two modes of mechanical extrusion forming and water expansion forming. The sizes and the calibers of two ends of the reducing joint are different, and when the double-end expansion stress is uneven during mechanical extrusion expansion molding, the expansion instability of products, inconsistent length of end expansion openings and high rejection rate often occur; when the pipe fitting is extruded and expanded, the die is formed by hard friction, the die core and the die cavity are easy to wear, and the service life of the die is short. When water expansion molding is used, the water expansion mold has several defects: 1. the mould cavity is staggered, and the parting surface of the product is indented and scratched; 2. the expanded pipe fitting has low symmetry and elliptical outer diameter; 3. the port of the product has the phenomena of necking and cracking, which can affect the production efficiency, reduce the production cost and improve the product percent of pass.

The utility model discloses a water expansion forming die's patent among the prior art, this utility model discloses a water expansion forming die, including last mould and lower mould that can lock each other, with last mould and lower mould matched with injection equipment, upward be equipped with the inflation shaping epicoele in the mould, be equipped with in the lower mould with inflation shaping epicoele assorted inflation shaping cavity of resorption, injection equipment stretches into the inflation shaping cavity of resorption and the inflation shaping upper chamber of resorption, is provided with as following structure in inflation shaping epicoele and the inflation shaping lower chamber: the first through groove, the first inclined groove, the second through groove, the second inclined groove and the third through groove are sequentially communicated along the axial direction; first logical groove, second lead to groove and third and lead to the groove and be the straight flute, reach the tubular product that the profile needs the expansion in the middle of can being convenient for process to and can be convenient for reduce the purpose of tubular product processing cost, however this utility model only uses water to rise forming process, also unable adaptation is to the machine-shaping of reducing joint combination pipe fitting.

SUMMERY OF THE UTILITY MODEL

The utility model provides a reducing connects combination pipe fitting composite forming mould solves the reducing that is different to both ends head size and bore and connects the problem that carries out composite forming.

In order to achieve the above technical effects, the technical scheme of the utility model as follows:

the composite forming die comprises a die plate and die cores, wherein the die plate comprises an upper die plate, a lower die plate and a female die cavity, the female die cavity is symmetrically arranged on the upper die plate and the lower die plate respectively in a parting manner, the die cores are arranged on two sides of the outer edge of the female die cavity along the axis respectively, each die core comprises a core head, a core body and a core tail, the core tail is provided with a water inlet end, a water inlet channel is arranged in the core body, the core head is provided with a water outlet hole, and the die cores and the female die cavity are matched to complete composite forming of the composite pipe of the reducing joint.

The utility model symmetrically divides the cavity of the female die and respectively arranges the cavity of the female die on the upper template and the lower template, thereby being convenient for manufacturing and processing the cavity of the female die of the die and also being convenient for conveying and processing the combined pipe fittings of the reducing joint; the die cores are respectively arranged on two sides of the outer edge of the axis of the cavity of the female die, so that the mode of co-forming by extrusion expansion and high-pressure water expansion is realized, the produced pipe fitting is high in roundness, the inner wall is smooth, and the outer wall is free from scratches and pull marks.

Furthermore, the template is provided with a plurality of female die cavities, the upper template is provided with guide pillars, and the lower template is provided with guide sleeve holes matched with the guide pillars.

Single cavity, double cavities or even multiple cavities can be arranged according to production requirements; the guide post and the guide sleeve hole which are matched with the upper template and the lower template can prevent displacement deviation when water expansion machining forming is carried out, and pipe forming quality is improved.

Furthermore, the female die cavity comprises an expansion cavity, a guide cavity and a feeding bevel, after the upper template and the lower template are attached to the guide sleeve hole through the guide pillar, the mold core enters from the feeding bevel and is matched with the expansion cavity to perform composite molding on the reducing joint combined pipe along the guide cavity.

The reducing joint combined pipe fitting completes corresponding appearance processing according to a concave die structure of an expanding cavity, the mold core moves along a track of a guide cavity, linear processing movement of the mold core can be guaranteed, processing errors are reduced, a feeding bevel opening provides avoidance guide for the mold core to enter and exit the mold cavity of the mold, and the problem that the mold core pushes a guide radial top sharp corner of a terminal surface to collapse is avoided, so that water expansion sealing performance is influenced, the mold cavity is scratched, and a product is scratched.

Furthermore, the lower template also comprises an exhaust hole and an exhaust groove, wherein the exhaust hole is arranged in the expanding cavity and leads to the exhaust groove at the bottom of the lower template.

When the water expansion of the middle section bone covering position of the reducing joint combined pipe fitting is formed, the air in the closed space can quickly escape from the die cavity through the exhaust hole and the exhaust groove, so that the metal material at the bone covering position is ensured to be closer to the die cavity of the template when expanding, the ellipse forming phenomenon can not occur, and the roundness of a finished product is high.

Furthermore, the upper template and the lower template are also provided with a reference hole and a mold locking groove.

The upper template and the lower template are provided with reference holes, positioning pins are assembled to connect the upper template and the lower template, and cavity-type coaxial fine routing and fine polishing operation is carried out in a die assembly state, so that the parting surfaces are not staggered; the side surface is provided with a mold locking groove, so that the mold plate is convenient to lock.

Further, the core print comprises a rebound control circular truncated cone, a core print I section and a core print II section, the core print I section is cylindrical, the core print II section is in a truncated cone shape, the end face of the cylindrical core is concentrically connected with the end face with the largest radius of the rebound control circular truncated cone, the end face with the smallest radius of the rebound control circular truncated cone is concentrically connected with the end face with the I section of the core print, and the end face with the largest radius of the I section of the core print is concentrically connected with the end face with the largest radius of the II sections of the core print.

The mould core is provided with the springback control circular truncated cone body, the process compensation is carried out on the port inward-turning phenomenon after the pipe fitting is flared, and the size standard of the flared pipe fitting port is reliable without inward shrinkage and deformation.

Furthermore, the maximum radius of the end face of the rebound control circular truncated cone is smaller than the radius of the end face of the cylindrical core, and after the rebound control circular truncated cone is connected with the cylindrical core, an annular pushing end face is formed on the end face with the maximum radius of the rebound control circular truncated cone.

The mould cores are also provided with pushing end faces to provide symmetrical pushing pressure, the mould cores on two sides are synchronously pushed towards the inside of the mould cavity, symmetrical squeezing and expanding actions are realized, the water injection tightness of the pipe fitting is improved, the water injection pressure is maintained, the pipe fitting has high symmetry and roundness after expansion, the outer wall is smooth, and the water caltrops are distinct.

Further, the outer surface of the second section of the core print forms an extruding inclined plane.

Only the head of the mold core performs the extrusion action on the port of the pipe fitting, the hard friction distance between the mold core and the pipe fitting is reduced, and the service life of the mold core is longer. When in extrusion expansion, the end head of the reducing joint combined pipe fitting expands outwards along the extrusion expansion inclined plane until the plane of the pipe orifice is abutted against the extrusion end face, and the inclined plane ensures the smooth outward expansion of the pipe end and avoids the cracking of the pipe fitting caused by instantaneous severe outward expansion deformation.

Furthermore, the water inlet channel arranged in the core body is divided into two sections with different radiuses, one section is connected with the tail of the core body, and the radius of the water inlet channel is larger than that of the section connected with the core head.

The radius of the water inlet channel is gradually decreased in two sections, so that the water injection pressure can be increased, and a better water expansion forming effect is achieved.

Furthermore, the core print II section is provided with a plurality of end water injection holes which are communicated with the water inlet channel.

The core print II section is provided with a plurality of end water injection holes to provide reinforcing water expansion force for water expansion at the end part, so that the pipe wall expansion operation of the pipe fitting close to the end port side is faster, the pipe fitting is more fit with a die cavity, and the pipe fitting is fuller in expansion.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

the utility model discloses a set up the die cavity symmetry parting on cope match-plate pattern and lower bolster respectively, make things convenient for mould die cavity to make processing, also make things convenient for reducing joint combination pipe fitting to convey processing; the die cores are respectively arranged on two sides of the outer edge of the axis of the cavity of the female die, so that the mode of co-forming by extrusion expansion and high-pressure water expansion is realized, the produced pipe fitting is high in roundness, the inner wall is smooth, and the outer wall is free from scratches and pull marks. The guide post and the guide sleeve hole which are matched with each other and arranged on the upper template and the lower template can prevent displacement deviation when water expansion machining forming is carried out, and pipe forming quality is improved. The mould core is provided with the springback control round table body, and the process compensation is carried out on the port inward-turning phenomenon after the pipe fitting is flared, so that the size standard of the flared pipe fitting port is reliable, and the pipe fitting port is not shrunk and deformed; the mould cores are also provided with pushing end faces to provide symmetrical pushing pressure, the mould cores on two sides are synchronously pushed towards the inside of the mould cavity, symmetrical squeezing and expanding actions are realized, the water injection tightness of the pipe fitting is improved, the water injection pressure is maintained, the pipe fitting has high symmetry and roundness after expansion, the outer wall is smooth, and the water caltrops are distinct. Only the head of the mold core performs the extrusion action on the port of the pipe fitting, the hard friction distance between the mold core and the pipe fitting is reduced, and the service life of the mold core is longer. The core print II section is provided with a plurality of end water injection holes to provide reinforcing water expansion force for the water expansion of the end part, so that the pipe wall expansion operation of the pipe fitting close to the end port side is faster, the pipe fitting fits a die cavity, and the pipe fitting is fuller in expansion.

Drawings

FIG. 1 is a schematic view of a combination pipe fitting of a reducing joint;

FIG. 2 is a schematic view of a composite forming mold for a composite pipe fitting of a reducing joint;

FIG. 3 is a schematic view of a composite forming mold (without pipe) for a composite pipe of a reducing joint;

FIG. 4 is a schematic sectional view of a composite forming mold for a composite pipe with a reducing joint;

FIG. 5 is a sectional view of a composite forming mold for a composite pipe fitting with a reducing joint;

FIG. 6 is a schematic view of a composite forming mold (without a mold locking groove and a datum hole) for a composite pipe fitting of a reducing joint;

FIG. 7 is a schematic view of a composite forming mold (without a mold locking groove, a reference hole and an end water injection hole) for a composite pipe fitting of a reducing joint;

FIG. 8 is a sectional view of a composite forming mold (without a mold locking groove, a reference hole and an end water injection hole) for a combined pipe fitting of a reducing joint;

FIG. 9 is a schematic view of a core print of a composite forming die for a composite pipe fitting with a reducing joint;

FIG. 10 is a sectional view of a core of a composite forming mold for a composite pipe with a reducing joint;

FIG. 11 is a schematic view of a composite forming die core (without end water injection holes) for a composite pipe fitting with a reducing joint;

FIG. 12 is a sectional view of a core (without a water injection hole) of a composite forming die for a composite pipe fitting with a reducing joint;

wherein 1 denotes a die plate, 11 denotes an upper die plate, 111 denotes a guide post, 12 denotes a lower die plate, 121 denotes a guide bush hole, 122 denotes an exhaust hole, 123 denotes an exhaust groove, 13 denotes a die cavity, 131 denotes an expanding cavity, 132 denotes a guide cavity, 133 denotes a feed bezel, 14 denotes a reference hole, 15 denotes a lock groove, 2 denotes a die core, 21 denotes a core, 211 denotes a rebound control dome, 212 denotes a core I section, 213 denotes a core II section, 214 denotes a water outlet hole, 215 denotes a tip water injection hole, 22 denotes a core, 221 denotes a water intake passage, 23 denotes a core tail, and 231 denotes a water intake tip.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;

it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Example 1:

the utility model provides a reducing connects combination pipe fitting, as shown in figure 1, compound forming die, as shown in figure 7, 8, including template 1 and mold core 2, template 1 includes cope match-plate pattern 11, lower bolster 12 and 2 die cavity 13, the cope match-plate pattern is provided with the guide pillar, the lower bolster is provided with the guide sleeve hole with guide pillar assorted, die cavity 13 sets up respectively on cope match-plate pattern 11 and lower bolster 12 through symmetrical parting, die cavity 13 includes rise shape die cavity 131, direction die cavity 132 and feeding bevel 133, die cavity 13 is outer along the axis both sides respectively is provided with mold core 2, mold core 2 includes core 21, core 22 and core tail 23, core tail 23 is provided with water inlet end 231, core 22 is inside to be provided with inlet channel 221, core 21 is provided with apopore 214, core 21, as shown in figures 11, 12, including resilience control round platform body 211, core I section 212 and core II section 213, core I section is cylindrical, core II section 213 is the bench type, the end of core 22 is connected with the biggest radius of resilience control round platform body 211, the biggest radius of cylinder core 211 is connected with the concentric end face of the core I section of the core, the biggest radius of the same core II section of resilience control platform body, the biggest core section of the same core with the core end face of resilience control round platform body 212, the core I is connected with the core end face of the core section of the core head of resilience control platform body, the biggest. The maximum radius of the end face of the rebound control circular truncated cone 211 is smaller than the radius of the end face of the cylindrical core 22, and after the rebound control circular truncated cone 211 is connected with the cylindrical core 22, an annular pushing end face is formed on the end face with the maximum radius of the rebound control circular truncated cone 211. The outer surface of the core print II segment 213 forms a bulging slope. The water inlet channel 221 arranged in the core body 22 is divided into two sections with different radiuses, one section is connected with the core tail 23, and the radius of the water inlet channel is larger than that of the section connected with the core head 21. The lower template 12 further comprises an air vent 122 and an air vent groove 123, wherein the air vent 122 is arranged in the expansion cavity 131 and leads to the air vent groove 123 at the bottom of the lower template 12. After the upper template 11 and the lower template 12 are attached to the guide sleeve hole 121 through the guide post 111, the mold core 2 enters from the inclined feeding port 133, and is matched with the expansion cavity 131 to perform composite molding on the reducing joint combined pipe fitting along the guide cavity 132.

The specific working process of using the die is as follows:

the guide post 111 on the upper template 11 is guided to enter the guide sleeve hole 121 of the lower template 12, and after the upper template 11 is jointed with the lower template 12, the female die cavity 13 begins to be jointed and tightly presses the blank pipe fitting; the synchronous feeding bevel ports 133 of the mold cores 2 at the two sides of the female mold cavity 13 enter, and the core heads 21 quickly enter the inner hole of the blank pipe fitting by utilizing the extruding bevel along the guide cavity 132 to force the whole opening part of the pipe fitting to expand; the mold core 2 is pushed to the two end faces of the blank pipe fitting to be abutted against the pushing end faces of the mold core 2, and the end flaring action is finished; the emulsion enters the inner hole of the pipe fitting through the water inlet end 231 of the core tail 23, the pipe fitting is expanded from inside to outside by sealing and pressurizing of the high-pressure water pump, and the metal at the bone wrapping part of the pipe fitting is expanded and attached to the female die cavity 13; during the period of water injection and pressurization, the mold cores 2 on the two sides are still synchronously pushed towards the inside of the cavity 13 of the female mold, and bone pack forming is in place under the double actions of pushing and water expansion. And then, the water expansion action is static and pressure maintaining is carried out for several seconds, and the expansion of the pipe fitting is finished.

Example 2:

the utility model provides a reducing connects combination pipe fitting composite forming mould, as shown in fig. 6, including template 1 and mold core 2, template 1 includes cope match-plate pattern 11, lower bolster 12 and 2 die cavity 13, the cope match-plate pattern is provided with the guide pillar, the lower bolster is provided with the guide sleeve hole with guide pillar assorted, die cavity 13 sets up respectively on cope match-plate pattern 11 and lower bolster 12 through symmetrical parting, die cavity 13 includes rise shape die cavity 131, direction die cavity 132 and feeding bevel 133, die cavity 13 is outer to be provided with mold core 2 along the axis both sides respectively, mold core 2 includes core 21, core 22 and core tail 23, core tail 23 is provided with into water end 231, core 22 is inside to be provided with inhalant canal 221, core 21 is provided with apopore 214, core 21, as shown in fig. 9, 10, including resilience control round platform body 211, I section 212 and II sections 213 of core, I section 212 of core is cylindrical, II sections of core 213 of core are the bench-shaped, the terminal surface of cylindrical core 22 is connected with the biggest end of resilience control round platform body 211, the smallest radius of resilience control round platform body 211 and the biggest end surface of core is connected with the core II sections of core 213. The maximum radius of the end face of the rebound control circular truncated cone 211 is smaller than the radius of the end face of the cylindrical core 22, and after the rebound control circular truncated cone 211 is connected with the cylindrical core 22, an annular pushing end face is formed on the end face with the maximum radius of the rebound control circular truncated cone 211. The outer surface of the core print II segment 213 forms a bulging slope. The water inlet channel 221 arranged in the core body 22 is divided into two sections with different radiuses, one section is connected with the core tail 23, and the radius of the water inlet channel is larger than that of the section connected with the core head 21. The core print II section 213 is provided with a plurality of end water injection holes 215 communicated with the water inlet passage 221. The lower template 12 further comprises an air vent 122 and an air vent groove 123, wherein the air vent 122 is arranged in the expansion cavity 131 and leads to the air vent groove 123 at the bottom of the lower template 12. After the upper template 11 and the lower template 12 are attached to the guide sleeve hole 121 through the guide post 111, the mold core 2 enters from the inclined feeding port 133, and is matched with the expansion cavity 131 along the guide cavity 132 to perform composite molding on the reducing joint combined pipe fitting.

The specific working process of using the die is as follows:

the guide post 111 on the upper template 11 is guided to enter the guide sleeve hole 121 of the lower template 12, and after the upper template 11 is jointed with the lower template 12, the female die cavity 13 begins to be jointed and tightly presses the blank pipe fitting; the die cores 2 on the two sides of the female die cavity 13 enter synchronously through the feeding inclined ports 133, and along the guide die cavity 132, the die cores 21 quickly enter the inner hole of the blank pipe fitting by utilizing the extruding inclined plane to force the whole opening part of the pipe fitting to expand and expand; the mold core 2 is pushed to the two end faces of the blank pipe fitting to be abutted against the pushing end faces of the mold core 2, and the end flaring action is finished; the emulsion enters the inner hole of the pipe fitting through the water inlet end 231 of the core tail 23, the pipe fitting is expanded from inside to outside by sealing and pressurizing of the high-pressure water pump, and the metal at the bone wrapping part of the pipe fitting is expanded and attached to the female die cavity 13; during the period of water injection and pressurization, the mold cores 2 on the two sides are still synchronously pushed towards the inside of the cavity 13 of the female mold, and bone pack forming is in place under the double actions of pushing and water expansion. And then, the water expansion action is static for holding pressure for several seconds, and the expansion of the pipe fitting is completed.

Example 3:

the utility model provides a reducing connects combination pipe fitting composite forming mould, as shown in fig. 2, 5, including template 1 and mold core 2, template 1 includes cope match-plate pattern 11, lower bolster 12 and 2 die cavity 13, as shown in fig. 3, 4, the cope match-plate pattern is provided with the guide pillar, the lower bolster is provided with the guide sleeve hole with guide pillar assorted, die cavity 13 sets up respectively on cope match-plate pattern 11 and lower bolster 12 through symmetrical parting, die cavity 13 includes rise shape die cavity 131, direction die cavity 132 and feeding bevel 133, die cavity 13 is outer along the axis both sides respectively is provided with mold core 2, mold core 2 includes core 21, core 22 and core tail 23, core tail 23 is provided with water inlet end 231, core 22 is inside to be provided with inlet channel 221, core 21 is provided with apopore 214, core 21, as shown in fig. 9, 10, including resilience control round platform body 211, core I section 212 and core II section 213, core I section is cylindrical, core II section 213 is the core is the bench-shaped, the end of core 22 is connected with the biggest radius of resilience control round platform body 211, the biggest concentric end face of the concentric control round platform body 211 and the biggest concentric core section of the biggest radius of the core I is connected with core end face of resilience core, the core II section of the core 212, the biggest concentric end face of resilience control platform body of the core, the core is connected with the core section of the core I. The maximum radius of the end face of the rebound control circular truncated cone 211 is smaller than the radius of the end face of the cylindrical core 22, and after the rebound control circular truncated cone 211 is connected with the cylindrical core 22, an annular pushing end face is formed on the end face with the maximum radius of the rebound control circular truncated cone 211. The outer surface of the core print II segment 213 forms a bulging slope. The water inlet channel 221 arranged in the core body 22 is divided into two sections with different radiuses, one section is connected with the core tail 23, and the radius of the water inlet channel is larger than that of the section connected with the core head 21. The core head II section 213 is provided with a plurality of end water injection holes 215 which are communicated with a water inlet channel 221. The lower template 12 further comprises an air vent 122 and an air vent groove 123, wherein the air vent 122 is arranged in the expansion cavity 131 and leads to the air vent groove 123 at the bottom of the lower template 12. The upper and lower templates 11 and 12 are further provided with a reference hole 14 and a locking groove 15. After the upper template 11 and the lower template 12 are attached to the guide sleeve hole 121 through the guide post 111, the mold core 2 enters from the inclined feeding port 133, and is matched with the expansion cavity 131 along the guide cavity 132 to perform composite molding on the reducing joint combined pipe fitting.

The specific working process of using the die is as follows:

the guide post 111 on the upper template 11 is guided to enter the guide sleeve hole 121 of the lower template 12, and after the upper template 11 is jointed with the lower template 12, the female die cavity 13 begins to be jointed and tightly presses the blank pipe fitting; the synchronous feeding bevel ports 133 of the mold cores 2 at the two sides of the female mold cavity 13 enter, and the core heads 21 quickly enter the inner hole of the blank pipe fitting by utilizing the extruding bevel along the guide cavity 132 to force the whole opening part of the pipe fitting to expand; the mold core 2 is pushed to the two end faces of the blank pipe fitting to be abutted against the pushing end faces of the mold core 2, and the end flaring action is finished; the emulsion enters the inner hole of the pipe fitting through the water inlet end 231 of the core tail 23, the pipe fitting is expanded from inside to outside by sealing and pressurizing of the high-pressure water pump, and the metal at the bone wrapping part of the pipe fitting is expanded and attached to the female die cavity 13; during the period of water injection and pressurization, the mold cores 2 on the two sides are still synchronously pushed towards the inside of the female mold cavity 13, and bone covering molding is in place under the double actions of pushing and water expansion. And then, the water expansion action is static and pressure maintaining is carried out for several seconds, and the expansion of the pipe fitting is finished.

The same or similar reference numerals correspond to the same or similar parts;

the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;

it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a reducing joint combination pipe fitting composite forming mould, including template (1) and mold core (2), a serial communication port, template (1) includes cope match-plate pattern (11), lower bolster (12) and die cavity (13), die cavity (13) set up respectively on cope match-plate pattern (11) and lower bolster (12) through symmetry parting, die cavity (13) outer edge axis both sides are provided with mold core (2) respectively, mold core (2) are including core (21), core (22) and core tail (23), core tail (23) are provided with water inlet end (231), inside inhalant canal (221) that is provided with of core (22), core (21) are provided with apopore (214), the compound shaping of reducing joint combination pipe fitting is accomplished in the cooperation of mold core (2) and die cavity (13).

2. The composite forming die for the combined pipe fitting of the reducing joint according to claim 1, wherein the die plate (1) is provided with a plurality of female die cavities (13), the upper die plate (11) is provided with guide pillars (111), and the lower die plate (12) is provided with guide sleeve holes (121) matched with the guide pillars (111).

3. The composite forming die for the combined pipe fitting with the reducing joint as claimed in claim 1, wherein the female die cavity (13) comprises an expanding cavity (131), a guide cavity (132) and a feeding bevel (133), after the upper die plate (11) and the lower die plate (12) are attached to the guide sleeve hole (121) through the guide post (111), the die core (2) enters from the feeding bevel (133), and the expanding cavity (131) is matched with the guide cavity (132) to form the combined pipe fitting with the reducing joint in a composite forming mode.

4. The composite forming die for the reducing joint combined pipe fitting according to claim 3, wherein the lower template (12) further comprises vent holes (122) and vent grooves (123), the vent holes (122) are arranged in the expanding cavity (131) and communicated with the vent grooves (123) at the bottom of the lower template (12).

5. The composite forming die for the combined pipe fitting of the reducing joint as claimed in claim 1, wherein the upper die plate (11) and the lower die plate (12) are further provided with a datum hole (14) and a die locking groove (15).

6. The composite forming die for the combined pipe fitting of the reducing joint as claimed in claim 1, wherein the core print (21) comprises a rebound control circular truncated cone (211), a first core print section (212) and a second core print section (213), the first core print section (212) is cylindrical, the second core print section (213) is truncated cone-shaped, the end face of the cylindrical core body (22) is concentrically connected with the end face with the largest radius of the rebound control circular truncated cone (211), the end face with the smallest radius of the rebound control circular truncated cone (211) is concentrically connected with the end face with the first core print section (212), and the first core print section (212) is concentrically connected with the end face with the largest radius of the second core print section (213).

7. The composite forming die for the combined pipe fitting of the reducing joint according to claim 6, wherein the maximum radius of the end face of the rebound control circular truncated cone (211) is smaller than the radius of the end face of the cylindrical core (22), and after the rebound control circular truncated cone (211) is connected with the cylindrical core (22), an annular pushing end face is formed on the end face with the maximum radius of the rebound control circular truncated cone (211).

8. The composite forming die for the reducing joint combined pipe fitting as claimed in claim 6, wherein the outer surface of the core print II section (213) forms an extrusion slope.

9. The composite forming die for the reducing joint combined pipe fitting as claimed in claim 1, wherein the water inlet channel (221) arranged inside the core body (22) is divided into two sections with different radiuses, one section is connected with the core tail (23), and the radius of the one section is larger than that of the section connected with the core head (21).

10. The composite forming die for the combined pipe fitting of the reducing joint as claimed in claim 6, wherein the core head II section (213) is provided with a plurality of end water injection holes (215) communicated with the water inlet passage (221).

Images