CN215202554U

CN215202554U - Local molding die assembly for prefabricated part

Info

Publication number: CN215202554U
Application number: CN202120262030.5U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-12-17
Anticipated expiration: 2031-01-30

Abstract

The utility model relates to a prefabricated component production technical field especially relates to prefabricated component local molding die assembly, include: the first template is matched with the end profile of the male splicing end on one side in the thickness direction of the precast concrete pile wall; and a second template adapted to the remaining end profile of the male splice end; the first template and the second template enclose a forming die cavity for manufacturing the male splicing end of the precast concrete pile wall; at least one first template and at least one second template are detachably connected, and a concave part is formed on the forming surface of at least one first template at least at the part with a preset distance from the root of the male splicing end. The utility model has the advantages of can realize the public concatenation end molding of complicated shape structure and can demould smoothly, can improve prefabricated component's joint strength and leakproofness.

Description

Local molding die assembly for prefabricated part

Technical Field

The utility model relates to a prefabricated component production technical field especially relates to prefabricated component local molding die assembly.

Background

In the field of building components, prefabricated components can be manufactured in a factory in advance, so that the workload of a construction site can be saved, and the environmental influence on the construction site is reduced, so that the prefabricated components are popularized. However, the use of prefabricated parts in some underground foundation pit operations is limited, mainly because the driven prefabricated parts cannot be mutually engaged and are easy to be inclined, or water seepage is easy to occur at the splicing positions of the prefabricated parts, so that the quality of the formed foundation pit enclosure is difficult to meet the requirements.

Therefore, the prefabricated part with the concave-convex structure is provided, the position accuracy of the prefabricated part driven into the prefabricated part can be improved by utilizing the matching of the concave-convex structure, the connection reliability of the splicing part of the prefabricated part can be enhanced, the subsequent waterproof construction is convenient, and the water seepage into a foundation pit is reduced. However, the manufacturing of the concave-convex structure is a difficult point in the production of prefabricated parts, and the existing prefabricated part production mold is difficult to complete the modeling of the concave-convex structure, or only a simple concave-convex structure can be formed in the splicing direction. This results in a conflict in the relief structure of the prefabricated parts, on the one hand, when designing the structure, it is desirable to enhance the connection strength and the sealing reliability of the prefabricated parts by changing the shape structure, but on the other hand, the complicated shape structure imposes higher demands on the mold at the relief position, and in particular, the relief structure encounters obstacles during demolding, making smooth demolding difficult. Therefore, at present, due to the limitation of a mold, the concave-convex structure of the prefabricated part can only adopt a simpler shape structure, so that the connection strength and the sealing reliability of the prefabricated part are difficult to achieve more optimization. Based on the above, how to optimize and improve the mold for the concave-convex position of the prefabricated part becomes a problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a local molding die assembly of prefabricated component can realize the public concatenation end molding of complicated shape structure and can demould smoothly, can improve prefabricated component's joint strength and leakproofness.

The utility model provides a local molding die assembly of prefabricated component for public concatenation end of shaping precast concrete pile wall, include:

the first template is matched with the end profile of the male splicing end on one side in the thickness direction of the precast concrete pile wall; and

a second template adapted to the remaining end profile of the male splice end;

the first template and the second template enclose a forming die cavity for manufacturing the male splicing end of the precast concrete pile wall;

at least one first template and at least one second template are detachably connected, and a concave part is formed on the forming surface of at least one first template at least at the part with a preset distance from the root of the male splicing end.

The technical scheme of the utility model still include: the modeling module comprises two first templates which are symmetrically arranged in the thickness direction of the precast concrete pile wall;

the forming surface of the at least one first template forms the recess at a part at least with a preset distance from the root of the male splicing end, or the forming surface of the at least one first template forms the recess from the root of the male splicing end to the end of the male splicing end.

The technical scheme of the utility model still include: the two first templates are detachably connected with the second template, or one of the first templates and the second template are of an integral structure, or one of the first templates and the bottom template containing the modeling module assembly are fixedly connected.

The technical scheme of the utility model still include: the first template and the second template are fixed through one or a combination of a plurality of types of screw connection, pin connection, insertion connection, clamping connection, overlapping connection and magnetic connection.

The technical scheme of the utility model still include: the first template comprises a first base plate and a first modeling plate which is detachably arranged on the first base plate, and the concave part at least with a preset distance away from the root of the male splicing end is positioned on the molding surface of the first modeling plate.

The technical scheme of the utility model still include: the concave part is provided with a limiting surface, the limiting surface and the outward convex direction of the male splicing end of the precast concrete pile wall form an included angle alpha, and the alpha is more than 0 degree and less than 180 degrees.

The technical scheme of the utility model still include: the molding surface of the second template has a protrusion facing the molding cavity.

The technical scheme of the utility model still include: the second template comprises a second base plate and a second modeling plate detachably mounted on the second base plate, and the protrusion is located on the modeling surface of the second modeling plate.

The technical scheme of the utility model still include: the first moldboard and/or the second moldboard are at least partially formed of a plastic or flexible material.

The technical scheme of the utility model still include: the molding surfaces of the first molding plate and the second molding plate are made of rigid materials, and the rest parts of the molding surfaces are made of plastic or flexible materials.

The technical scheme of the utility model still include: the section shape of the molding die cavity of the molding die assembly is approximately T-shaped, L-shaped, dovetail-shaped or semi-dovetail-shaped.

The technical scheme of the utility model still include: and a cavity is arranged in the first template and/or the second template, the length of the cavity is less than or equal to that of the first template and/or the second template, and the lengths of the first template and the second template are approximately the same.

The technical scheme of the utility model still include: the cavity is internally provided with connecting ribs, and the connecting ribs separate the cavity into at least two cavities.

The technical scheme of the utility model still include: the first base plate and the first modeling plate and/or the second base plate and the second modeling plate are/is fixed through one or a combination of bonding, screwing, pin joint, splicing, clamping and magnetic attraction connection.

The technical scheme of the utility model still include: the first base plate is fixedly spliced with the first modeling plate, the first modeling plate is provided with a splicing groove, and the first base plate is provided with a splicing strip matched with the splicing groove;

and/or the first base plate is provided with an inserting groove, and the first modeling plate is provided with an inserting strip matched with the inserting groove.

The technical scheme of the utility model still include: the second die plate has an inclined surface that mates with a bottom die that houses the mold assembly.

The beneficial effects of the utility model are that: the mould is designed in a block mode, a first template is used for forming a male splicing end profile on one side of the precast concrete pile wall in the thickness direction, a second template is used for forming other end profiles of the male splicing end, and a concave part is formed at a part, at least a preset distance away from the root of the male splicing end, of a forming surface of the first template, so that the male splicing end of the precast concrete pile wall formed by using the local modeling module assembly of the precast component forms an outward expanding section at the preset distance away from the root of the male splicing end, the connection between the two precast concrete pile walls can be strengthened through the outward expanding section, the situation that two piles are separated under stress is avoided, meanwhile, part of the first template is detachably connected with the second template, and therefore, the male splicing end with a complex shape can be conveniently demoulded at the same time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of a first type of prefabricated part partial molding die assembly in the embodiment.

Fig. 2 is a schematic view of a second type of prefabricated part partial molding die assembly in the embodiment.

Fig. 3 is a schematic view of a partial molding die assembly of a third prefabricated part according to the embodiment.

Fig. 4 is a schematic view of a partial molding die assembly of a fourth prefabricated part according to the embodiment.

Fig. 5 is a schematic view of a fifth type of prefabricated part partial molding die assembly in the embodiment.

Fig. 6 is a schematic view of a sixth type of prefabricated part partial molding die assembly in the embodiment.

Fig. 7 is a schematic view of a seventh type of prefabricated part partial molding die assembly in the embodiment.

Fig. 8 is a schematic view of a second template in the embodiment.

Fig. 9 is a schematic view of the first template in the embodiment.

FIGS. 10-1 and 10-2 are schematic views of a first base plate and a first castellated plate, respectively.

Fig. 11 is a schematic cross-sectional view of a precast pile wall with a profiled male splice end of a prefabricated part partial-profiling mold assembly of the present embodiment.

Wherein:

1. the first template, 11, a concave part, 12, a first base plate, 13, a first modeling plate, 14, a plug-in strip, 15, a plug-in groove, 2, a second template, 21, a bulge, 22, a second base plate, 23, a second modeling plate, 24, an inclined surface, 3, a molding die cavity, 4, a male splicing end root, 5, a cavity, 51 and a connecting rib;

100. pile wall, 200, male splicing end, 300, female splicing end.

Detailed Description

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

In this document, terms such as "upper, lower, left, right, inner, and outer" are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may vary depending on the drawings, and therefore, the terms are not to be construed as an absolute limitation of the protection scope; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements. In addition, in the embodiments of the present invention, "above", "below", and the like include the present numbers.

The embodiment of the utility model discloses local molding die assembly of prefabricated component can be used to the public concatenation end shaping of precast concrete pile wall, and can shape out the shape relatively complicated, be convenient for strengthen the joint strength and the public concatenation end of leakproofness of two adjacent pile walls to the drawing of patterns of being convenient for.

< example one >

The prefabricated part partial molding die assembly of the present embodiment may be used to produce the male splicing end 200 of the precast concrete pile wall 100, as exemplified in fig. 11, wherein the precast concrete pile wall 100 (hereinafter, referred to as a pile wall) can be precast in advance at a factory, and the male splicing end 200 and/or the female splicing end 300 can be formed at the connection end side, thus, during construction, the male splicing end 200 and the female splicing end 300 of the pile wall 100 are sequentially implanted, so that on one hand, the straightness of the pile wall 100 can be ensured, the construction is accurate, on the other hand, reliable connection can be formed between two adjacent pile walls 100, the pile wall can be prevented from being separated by external force, and materials such as concrete or sealing can be injected after the two pile walls 100 are connected, so that the sealing between the two pile walls is strengthened, thus, the precast concrete pile wall 100 can be used to replace an underground diaphragm wall, thereby avoiding the high operation cost of the underground diaphragm wall and the difficult problem of waste slurry treatment on a construction site particularly in urban operation.

In order to form the male splicing end 200 capable of being reliably connected between the pile walls 100 and smoothly demould after the male splicing end 200 is formed, as shown in fig. 1 to 6, the local forming module assembly of the prefabricated part provided by the embodiment adopts a block type design, and specifically comprises a first template 1 and a second template 2, wherein the first template 1 is used for forming the end part of the male splicing end 200 on one side of the thickness direction of the precast concrete pile wall 100, and therefore the first template 1 has a profile matched with the end part of the male splicing end 200 on one side of the thickness direction of the precast concrete pile wall 100. The second template 2 is used to shape the remaining end of the male splice end 200, whereby the second template 2 has a profile adapted to the remaining end of the male splice end 200. In this embodiment, the thickness direction of the precast concrete pile wall 100 refers to a direction perpendicular to the butt joint direction of the male splice end 200 and the female splice end 300 of the adjacent precast concrete pile walls 100.

As illustrated in fig. 1, the first form 1 may be designed in one piece, that is, the first form 1 is formed at one end in the thickness direction of the pile wall 100, the second form 2 is formed at the other end in the thickness direction of the pile wall 100 and the end in the butt joint direction of the male and

female butt joints

200 and 300 of the pile wall 100, and the second form 2 has an L-shaped cross section perpendicular to the length extension direction of the male butt joint 200. Alternatively, as illustrated in fig. 2, the first formwork 1 is designed with two pieces, i.e. both end profiles in the thickness direction of the pile wall 100 are formed by the first formwork 1, and the second formwork 2 is only used for forming the end profile in the butt joint direction of the male splice end 200 and the female splice end 300 of the pile wall 100. In other variations of this embodiment, an end profile of the pile wall 100 in the thickness direction may also be formed by more than two first form panels 1, and an end profile of the pile wall 100 in the butt joint direction of the male splice end 200 and the female splice end 300 may also be formed by more than two second form panels 2, that is, the first form panel 1 and the second form panel 2 illustrated in fig. 1 or fig. 2 are further designed to be divided into blocks, so as to facilitate demolding after molding while molding a more complicated profile of the male splice end 200, and the number of the first form panel 1 and the second form panel 2 after the divided design may be adjusted according to the end profile of the male splice end 200 and the operation requirement of the demolding process, which is not particularly limited in this embodiment.

The cavity formed by connecting the first template 1 and the second template 2 is a molding cavity 3, concrete is injected into the molding cavity 3 during production, and after the concrete is solidified for a period of time, the male splicing end 200 of the pile wall 100 can be molded, wherein part of the first template 1 and the second template 2 are fixed in a detachable connection mode, and specifically, one or more combinations of bolt connection fixing, overlapping, pin connection, splicing, clamping, magnetic connection and the like can be adopted.

In this embodiment, a recess 11 is formed on the molding surface of the at least one first form 1, specifically, the recess 11 is located at a predetermined distance from the male splicing end root 4, wherein the dotted line position in fig. 1 is the male splicing end root 4, i.e. the connection between the male splicing end 200 and the pile wall 100 body. The concave part 11 can form an outward expansion section on the end contour of the male splicing end 200 in the thickness direction of the pile wall 100, correspondingly, the female splicing end 300 of the pile wall 100 is provided with an adaptive inward contraction section, so that adjacent pile walls 100 form a pull fit with the inward contraction section on the female splicing end 300 through the outward expansion section on the male splicing end 200, and the pull fit has the pull action of resisting external force in the splicing direction of the male splicing end and the female splicing end, thereby enhancing the connection strength of the male splicing end 200 and the female splicing end 300, avoiding the pile walls 100 from being separated under the action of external soil bodies and the like after being implanted, improving the occlusion of the male splicing end 200 and the female splicing end 300 of the pile walls 100, improving the connection strength of two adjacent pile walls 100, and pulling and fixing an integral assembly type underground wall structure between the adjacent pile walls 100, and further ensuring the stability of the underground structure formed by connecting the pile walls 100. Specifically, the recess 11 may be formed at a distance from the male splice end root 4, as shown in fig. 1, or the recess 1 may be formed directly from the male splice end root 4, as shown in fig. 5, so as to facilitate flexible design of different structural types of the male splice end 200 of the stud wall 100.

In the modification of the present embodiment, the cross-sectional shape of the molding cavity 3 may be made to assume a substantially T-shape, L-shape, dovetail shape, or semi-dovetail shape, etc., depending on the shape or position of the recessed portion 11. Wherein, fig. 1 and fig. 5 show a half dovetail-shaped forming die cavity 3, fig. 2 shows a T-shaped forming die cavity 3, fig. 3 shows an L-shaped forming die cavity 3, that is, a concave part 11 is formed only on one side end part in the thickness direction of the pile wall 100, so that the formed male splicing end 200 forms an outward expanding section only on one side end part in the thickness direction of the pile wall 100, and the single-side outward expanding section is butted and engaged with the female splicing end 300 of the adjacent pile wall 100, thereby realizing the reliable connection of the two pile walls 100 without separation. Specifically, the recessed portion 11 is designed with a limiting surface, as shown in fig. 4, the limiting surface forms an included angle α with the outward protruding direction of the male splicing end 300 of the pile wall 100, and the included angle α is greater than 0 ° and less than 180 °, so as to limit and block the male splicing end 200 and the female splicing end 300 of the adjacent pile wall 100 during the butt joint. In addition, in the above modification, since the recessed portion 11 is formed only on one side, one of the first mold plates 1, for example, the first mold plate 1 without the recessed portion 11, may be detachably connected to the second mold plate 2, as shown in fig. 2 and 3, or the first mold plate 1 may be designed as an integral structure with the second mold plate 2, as shown in fig. 1 and 5, or the first mold plate 1 may be connected to and fixed to a bottom mold (not shown) accommodating the molding mold assembly, and the first mold plate 1 does not need to be moved during demolding, so as to reduce the amount of mold disassembling and assembling operations and improve the molding efficiency of the male splice end 200.

In order to strengthen the connection strength between the male splicing end 200 and the female splicing end 300 of two adjacent pile walls 100, an outward expanding section can be formed at both side end parts of the male splicing end 200 in the thickness direction of the pile wall 100, that is, the prefabricated part local molding die assembly is designed to comprise two first die plates 1 which are symmetrically arranged in the thickness direction of the prefabricated concrete pile wall, and the forming surfaces of the two first die plates 1 are respectively provided with a concave part 11 at a part which is at least a predetermined distance away from the root 4 of the male splicing end, so as to form a forming die cavity 3 which is approximately in a dovetail shape as shown in fig. 4 and fig. 6. Alternatively, the forming surface of one of the first form panels 1 forms the recess 11 at least at a portion of a predetermined distance from the root 4 of the male splicing end, and the forming surface of the other first form panel 1 forms the recess 11 from the root 4 of the male splicing end to the end of the male splicing end, i.e. the positions of the two recesses 11 in the splicing direction of the male splicing end 200 and the female splicing end 300 of the stud wall 100 may be identical or staggered. At this moment, two first templates 1 can all be dismantled with second template 2 and be connected, and is concrete, and first template 1 and second template 2 accessible spiro union, pin joint, grafting, joint, overlap joint, magnetism inhale one kind of compound mode in the connection etc. and fix. Alternatively, one of the first form panels 1 is detachably connected to the second form panel 2, and the other first form panel 1 is fixedly connected to a bottom mold (not shown) for accommodating the molding die assembly, so as to reduce the workload of disassembling and assembling the first form panel 1 and the second form panel 2 during mold disassembly.

In the modification of this embodiment, the molding surface of the second form 2 is designed with a protrusion 21 facing the molding cavity 3, and the protrusion 21 can form a recess in the male splicing end 200, so that a cavity communicating the splicing gap can be formed when the male splicing end 300 of the adjacent pile wall 100 is spliced, and after the two pile walls 100 are implanted, concrete or sealing materials can be poured into the cavity to form a closed barrier zone, so as to prevent pore water and the like of the soil outside the pile walls 100 from permeating through the splicing gap between the male splicing end 200 and the female splicing end 300 of the two pile walls 100, thereby providing reliable construction conditions for the interior of the pile walls 100, and providing reliable guarantee for the underground building in the pile walls 100, and having the functions of enclosing the wall and building underground wall. Specifically, the protrusion 21 may be designed with one or more than two, so as to flexibly adjust to different requirements of the pile wall 100 for factory prefabrication and field construction, and for the waterproof performance in the engineering field, which is not particularly limited in this embodiment.

As shown in fig. 6, the first form 1 and the second form 2 are provided with the hollow 5, so as to reduce the weight of the forms, save the material consumption of the forms, and reduce the cost. Specifically, the cavity 5 may be designed in only one of the first form panels 1, or only the second form panel 2, and the length of the cavity 5 may be designed to be less than or equal to the length of the first form panel 1 and the second form panel 2, that is, the cavity 5 may penetrate through the entire first form panel 1 and the second form panel 2, or the cavity 5 may penetrate only at the end portions of the first form panel 1 and the second form panel 2, and the above structural form may be determined according to the material and the processing cost, and the present embodiment is not particularly limited.

In order to avoid the adverse effect on the strength of the cavity 5 after the cavity 5 is designed on the first template 1 and the second template 2, the cavity 5 is internally provided with the connecting rib 51, and the connecting rib 51 can divide the cavity 5 into at least two cavities, so that the strength of the templates can be maintained or enhanced while the material consumption of the templates is saved as much as possible and the cost is reduced, and the deformation under the impact of pouring concrete is avoided.

As shown in fig. 2 and 3, the first form 1 forming the recessed portion 11 is placed at the lower portion of the whole local forming mold assembly of the prefabricated component, so that the recessed portion 11 is formed at the lower portion of the whole forming mold cavity 3, the recessed portion 11 can be filled with poured concrete, the difficulty in filling the elongated recessed portion 11 at the upper portion of the forming mold cavity 3 due to concrete flow is avoided, the problem that the outer expanding section is difficult to form due to the air hole defect, the cloth defect and the like which are difficult to discharge in the recessed portion 11 at the upper portion of the forming mold cavity 3 during pouring concrete is avoided, and the quality of the formed pile wall male joint end 200 can be improved.

< example two >

In the present embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.

As shown in fig. 7 to 10, the first form 1 and the second form 2 are of a split structure, so that the advantage of the design is that only the worn parts of the first form 1 and the second form 2 can be replaced after the forms are worn or damaged by the impact of pouring concrete into the molding cavity 3 after being used for a period of time, thereby reducing the maintenance cost of the prefabricated part local molding die assembly at the later stage.

Specifically, the second mold plate 2 comprises a second base plate 22 and a second modeling plate 23 detachably mounted on the second base plate 22, wherein the protrusion 21 capable of forming the cavity of the pouring waterproof structure at the male splicing end 200 is positioned on the modeling surface of the second modeling plate 23. Similar to the second form 2, the first form 1 includes a first base plate 12 and a first moldboard 13 detachably mounted on the first base plate 12, wherein the recess 11 for forming the outward expansion section of the male splicing end 200 to strengthen the connection between the adjacent pile walls 100 is located on the molding surface of the first moldboard 13.

In order to facilitate subsequent disassembly and assembly and replacement, the second base plate 22, the second modeling plate 23, the first base plate 12 and the first modeling plate 13 are fixed in a bonding mode, a bolt connection mode, an insertion mode, a clamping mode, a pin connection mode, a magnetic attraction connection mode and the like. Specifically, as shown in fig. 8, the second mold plate 23 is bonded to the second base plate 22; as shown in FIGS. 9, 10-1 and 10-2, the first base plate 12 is fixedly connected with the first modeling plate 13 in an inserting manner, the first modeling plate 13 is provided with an inserting groove 15, and correspondingly, the first base plate 12 is provided with an inserting strip 14 matched with the inserting groove 15, or the first base plate 12 is provided with an inserting groove 15, and the first modeling plate 13 is provided with an inserting strip 14 matched with the inserting groove 15.

In the modification of the embodiment, the first mold plate 1 and the second mold plate 2 are made of different materials, wherein the surfaces of the first mold plate 13 and the second mold plate 23, which form the boundary contour of the molding cavity 3, can be made of rigid materials, so that the problems of deformation and the like caused by concrete extrusion in the material distribution process can be avoided, so that the contour lines meeting the designed shape can be processed, the rest parts can be made of plastic or flexible materials, have certain elastic deformation capacity, are convenient to disassemble and replace, and the first substrate 12 and the second substrate 22, which have the supporting function on the first mold plate 13 and the second mold plate 23, can be processed and formed by rigid materials such as profile steel and the like. And, in order to save the amount of the die plate material, the cavity 5 may be designed in the first base plate 12, the second base plate 22, the first molding plate 13, and the second molding plate 23 separately or simultaneously, or the connection rib 51 may be designed in the cavity 5 in consideration of the amount of the material saved and the strength of the die plate.

As shown in fig. 8, the second form 2 has an inclined surface 24 that matches with the bottom mold for accommodating the molding die assembly, i.e., the inclined surface 24 is designed on the side of the second base plate 22 away from the side connected to the second molding plate 23, and the inclination of the inclined surface 24 is used to facilitate the integral demolding of the molding die assembly from the bottom mold after the pile wall male end 200 is formed.

In the case that the embodiments are not contradictory, at least some of the technical solutions in the embodiments may be recombined to form the essential technical solution of the present invention, and of course, the embodiments may also be cited or included in each other. Moreover, it should be noted that adaptation modifications (such as partial addition, partial deletion, and partial modification) made by those skilled in the art when recombining technical means described in each embodiment will also fall within the scope of the present invention.

The technical principles of the present invention have been described above with reference to specific embodiments, but it should be noted that the above descriptions are only for explaining the principles of the present invention, and should not be interpreted as specifically limiting the scope of the present invention in any way. Based on the explanation here, those skilled in the art can conceive of other embodiments of the present invention or equivalent alternatives without creative efforts, and will fall into the protection scope of the present invention.

Claims

1. The utility model provides a local molding die assembly of prefabricated component for the public concatenation end of shaping precast concrete pile wall, its characterized in that includes:

a second template adapted to the remaining end profile of the male splice end;

2. The local molding die assembly of prefabricated parts according to claim 1, wherein: the modeling module comprises two first templates which are symmetrically arranged in the thickness direction of the precast concrete pile wall;

3. The local molding die assembly of prefabricated parts according to claim 2, wherein: the two first templates are detachably connected with the second template, or one of the first templates and the second template are of an integral structure, or one of the first templates and a bottom die for accommodating the modeling die assembly are fixedly connected;

or the first template and the second template are fixed through one or a combination of a plurality of types of screw connection, pin connection, insertion connection, clamping connection, overlapping connection and magnetic attraction connection.

4. The local molding die assembly of prefabricated parts according to claim 1, wherein: the first template comprises a first base plate and a first modeling plate which is detachably arranged on the first base plate, and the concave part at least with a preset distance away from the root of the male splicing end is positioned on the molding surface of the first modeling plate;

or the sunken part is provided with a limiting surface, the limiting surface and the outward convex direction of the male splicing end of the precast concrete pile wall form an included angle alpha, and the alpha is more than 0 degree and less than 180 degrees.

5. The local molding die assembly of prefabricated parts according to claim 4, wherein: the molding surface of the second template is provided with a bulge facing the molding die cavity;

or the second template comprises a second base plate and a second modeling plate detachably arranged on the second base plate, and the protrusion is positioned on the modeling surface of the second modeling plate.

6. The local molding die assembly of prefabricated parts according to claim 5, wherein: the first modeling plate and/or the second modeling plate are at least partially formed by plastic or flexible materials;

or the modeling surfaces of the first modeling plate and the second modeling plate are made of rigid materials, and the rest parts are made of plastic or flexible materials.

7. The local molding die assembly of prefabricated parts according to claim 1, wherein: the section shape of the molding die cavity of the molding die assembly is approximately T-shaped, L-shaped, dovetail-shaped or semi-dovetail-shaped.

8. The local molding die assembly of prefabricated parts according to claim 1, wherein: a cavity is arranged in the first template and/or the second template, the length of the cavity is less than or equal to that of the first template and/or the second template, and the lengths of the first template and the second template are approximately the same;

or the hollow cavity is internally provided with connecting ribs which separate the hollow cavity into at least two hollow cavities.

9. The local molding die assembly of prefabricated parts according to claim 5, wherein: the first base plate and the first modeling plate and/or the second base plate and the second modeling plate are/is fixed through one or a combination of bonding, screwing, pin joint, splicing, clamping and magnetic attraction connection;

or the first base plate is fixedly spliced with the first modeling plate, the first modeling plate is provided with a splicing groove, and the first base plate is provided with a splicing strip matched with the splicing groove;

10. The local molding die assembly of prefabricated parts according to claim 1, wherein: the second die plate has an inclined surface that mates with a bottom die that houses the mold assembly.