Concrete prefabricating mold for reserved opening of strong and weak electricity box

Abstract

The utility model discloses a concrete prefabricating mold for a reserved opening of a strong and weak electricity box, the concrete prefabricating mold is used for pouring a prefabricated part mounted at the reserved opening, the prefabricating mold comprises a bottom mold, a side mold, an inner mold, a plurality of movable sleeves and an extrusion assembly, the bottom mold is provided with a first seat surface and a second seat surface which are oppositely arranged in a first direction, and the first direction is the thickness direction of the bottom mold; the side mold is arranged on one side of the first seat surface, and a pouring space of the prefabricated part is defined by the side mold and the bottom mold and comprises a lintel space and a frame space which are sequentially distributed in the second direction; the inner mold is arranged on one side of the first seat surface and is positioned in the frame space; the plurality of moving sleeves are positioned in the lintel space; the extrusion assemblies correspond to the multiple moving sleeves one to one and are arranged in the corresponding moving sleeves, and the extrusion assemblies respond to the driving force to extrude the side mold and the inner mold correspondingly. According to the device, the specific positions of the moving sleeves are adjusted by manually moving the moving sleeves, the positions of the wire passing holes in the poured prefabricated part can be adjusted, and using is more convenient and faster.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a prefabricated concrete mold for reserved openings for strong and weak current boxes. Background Art

[0002] During the secondary structure wall construction process, it is usually necessary to reserve installation holes for strong and weak current boxes to facilitate the subsequent installation of strong and weak current boxes. After the strong and weak current boxes are installed, it is necessary to repair and caulk the back and surrounding areas of the boxes. The detailed process is cumbersome, time-consuming and labor-intensive. After the decoration of the back and surrounding areas of the boxes is completed, there are many hollows and cracks, and the rate of later repairs is high.

[0003] In the prior art, a prefabricated part cast in concrete is usually installed at the reserved opening, and then the internal space of the prefabricated part is used as the installation location of the strong and weak current boxes to avoid the above problems.

[0004] However, the number and positions of the wire holes on the above-mentioned prefabricated parts are fixed, which makes it difficult to adapt to different wiring requirements and inconvenient to use. Utility Model Content

[0005] The main purpose of the present application is to provide a precast concrete mould with reserved openings for power and weak current boxes, aiming to solve the problem that the number and positions of wire holes on the precast parts are fixed, making it difficult to adapt to different wiring requirements and inconvenient to use.

[0006] To achieve the above-mentioned purpose, the present application provides a concrete precast mold for a reserved opening of a strong and weak current box, which is used for casting a precast part installed at the reserved opening, wherein the precast mold includes a bottom mold, a side mold, an inner mold, a plurality of movable sleeves and an extrusion assembly, wherein the bottom mold has a first seat surface and a second seat surface arranged opposite to each other in a first direction, and the first direction is the thickness direction of the bottom mold; the side mold is arranged on the side of the first seat surface away from the second seat surface and forms a casting space for the precast part with the bottom mold, and the casting space includes a lintel space and a frame space distributed in sequence in the second direction, and the second direction is perpendicular to the first direction; the inner mold is arranged on the side of the first seat surface away from the second seat surface and is located in the frame space; the plurality of movable sleeves are all located in the lintel space and extend along the second direction, and the two ends of the movable sleeves are respectively fitted with the side mold and the inner mold; the extrusion assembly corresponds to the plurality of movable sleeves one by one and is arranged in the corresponding movable sleeves, and the extrusion assembly extrude the side mold and the inner mold respectively in response to the driving force.

[0007] Optionally, the extrusion assembly includes a fixed block, two movable blocks and two springs, wherein the fixed block is fixed to the movable sleeve; the two movable blocks are arranged on opposite sides of the fixed block in the second direction, the movable blocks are slidably connected to the movable sleeve and have the freedom to slide along the second direction; the two springs correspond to the two movable blocks one by one and are arranged between the corresponding movable blocks and the fixed block, and the springs extend along the second direction.

[0008] Optionally, the prefabricated mold also includes a connecting sleeve, which corresponds to the movable sleeve one by one and is sleeved on the outer circumference of the movable sleeve, the two ends of the connecting sleeve respectively abut the side mold and the inner mold, the connecting sleeve is slidably connected to the movable sleeve and has the freedom to slide along the second direction.

[0009] Optionally, a groove is provided on the side of the inner mold facing the bottom mold, the inner mold is slidably connected to the bottom mold and has the freedom to slide along a second direction, and the inner mold extrude the movable sleeve along the second direction in response to the transmission force; the prefabricated mold also includes a driving assembly, the driving assembly is located in the groove and connects the bottom mold and the inner mold, and the driving assembly provides transmission force for the inner mold.

[0010] Optionally, a through hole extending along the first direction is provided on the bottom mold, and when the prefabricated part is cast, the orthographic projection of the inner mold on the bottom mold covers the through hole; the driving assembly includes a support part, a screw, a gasket and a knob, wherein the support part is fixed to the side of the first seat surface facing away from the second seat surface; the screw passes through the support part and is threadedly connected to the support part, and the axial direction of the screw is the same as the second direction; the gasket is rotatably connected to one end of the screw close to the movable sleeve, and the gasket has the freedom to rotate around the second direction; the knob is fixed to the end of the screw away from the gasket, and the orthographic projection of the knob on the bottom mold is located in the through hole.

[0011] Optionally, the prefabricated mold also includes two limit blocks and two sliding blocks, wherein the two limit blocks are relatively arranged on the side of the first seat surface away from the second seat surface in the third direction and are both located in the groove, and the two limit blocks are provided with sliding grooves on the sides away from each other, and the third direction is respectively perpendicular to the second direction and the first direction; the two sliding blocks are relatively arranged in the groove in the third direction and are fixed to the inner mold, and the two sliding blocks correspond one-to-one to the two sliding grooves and slide in cooperation with the corresponding sliding grooves.

[0012] Optionally, the side mold includes a fixed mold and a rotating mold, wherein the fixed mold is fixed to the bottom mold; the rotating mold is arranged at the end of the movable sleeve away from the inner mold and is rotatably connected to the bottom mold, the rotating mold has the freedom to rotate around a third direction, and the rotating mold is connected to the fixed mold by bolts to lock the rotation freedom of the rotating mold.

[0013] Optionally, when casting the prefabricated part, the slider passes through the slide groove close to one end of the movable sleeve; in the second direction, the length of the slider inserted into the slide groove is a, the minimum distance between the knob and the support part is b, and b is greater than or equal to.

[0014] Optionally, the prefabricated component includes a lintel and a frame corresponding to the lintel space and the frame space; in the third direction, the length of the lintel is greater than the length of the frame.

[0015] Optionally, in the first direction, the height of the inner mold is less than the height of the side mold.

[0016] A precast concrete mold for reserved openings for strong and weak current boxes proposed in an embodiment of the present application can place the bottom mold on the ground for use, and at this time the first seat surface is located on the side of the second seat surface away from the ground; an appropriate amount of movable sleeves are selected according to the wiring requirements, and each movable sleeve is inserted into the lintel space, and at this time the two ends of the movable sleeve fit the inner mold and the side mold, and the extrusion assembly located in the movable sleeve extrude the inner mold and the side mold, thereby limiting the position of the movable sleeve, and at this time the specific position of each movable sleeve can be adjusted by manually moving each movable sleeve, so that the position of the wire hole on the cast prefabricated part can be adjusted, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a precast concrete mold for a reserved opening for a strong and weak current box provided in an embodiment of the present application;

[0018] Figure 2 for Figure 1 A structural schematic diagram of another perspective of the embodiment;

[0019] Figure 3 for Figure 1 A schematic cross-sectional view of an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the cross-sectional structure of a connection sleeve of a prefabricated concrete mold for a reserved opening of a strong and weak current box provided in an embodiment of the application;

[0021] Figure 5 It is a schematic diagram of the overall structure of the prefabricated parts;

[0022] Figure 6 for Figure 5 A structural schematic diagram of another perspective of the embodiment;

[0023] Figure 7 This is a schematic diagram of the installation of prefabricated parts.

[0024] In the figure: A, prefabricated part; A1, lintel; A2, frame; 1, bottom mold; 11, through hole; 12, limit block; 2, side mold; 21, lintel space; 22, frame space; 23, fixed template; 24, rotating template; 3, inner mold; 31, groove; 32, slider; 4, movable sleeve; 5, extrusion assembly; 51, fixed block; 52, movable block; 53, spring; 6, connecting sleeve; 7, driving assembly; 71, support part; 72, screw; 73, gasket; 74, knob.

[0025] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] refer to Figure 1 to Figure 7 It should be understood that Figure 4 and Figure 5 The connections between the components should be like Figure 3 As compact as in the example, this is just an example. Figure 4 and Figure 5Some of the components are displayed separately for easy understanding. The embodiment of the present application provides a concrete precast mold for a reserved opening of a strong and weak current box, which is used to cast a precast part A installed at the reserved opening. The precast mold may include a bottom mold 1, a side mold 2, an inner mold 3, a plurality of movable sleeves 4 and an extrusion assembly 5, wherein the bottom mold 1 has a first seat surface and a second seat surface arranged opposite to each other in a first direction, and the first direction is the thickness direction of the bottom mold 1; the side mold 2 is arranged on the side of the first seat surface away from the second seat surface and encloses a casting space for the precast part A with the bottom mold 1, and the casting space may include a lintel space 21 and a frame space 22 distributed in sequence in the second direction, and the second direction is perpendicular to the first direction; the inner mold 3 is arranged on the side of the first seat surface away from the second seat surface and is located in the frame space 22; the plurality of movable sleeves 4 are all located in the lintel space 21 and extend along the second direction, and the two ends of the movable sleeve 4 are respectively fitted with the side mold 2 and the inner mold 3; the extrusion assembly 5 corresponds to the plurality of movable sleeves 4 one by one and is arranged in the corresponding movable sleeves 4, and the extrusion assembly 5 extrude the side mold 2 and the inner mold 3 respectively in response to the driving force.

[0031] A precast concrete mold for reserved openings for strong and weak current boxes proposed in the embodiment of the present application can place the bottom mold 1 on the ground for use, and at this time the first seat surface is located on the side of the second seat surface away from the ground; an appropriate amount of movable sleeves 4 are selected according to the wiring requirements, and each movable sleeve 4 is inserted into the lintel space 21, at this time the two ends of the movable sleeve 4 fit the inner mold 3 and the side mold 2, and the extrusion assembly 5 located in the movable sleeve 4 squeezes the inner mold 3 and the side mold 2, thereby limiting the position of the movable sleeve 4, and at this time the specific position of each movable sleeve 4 can be adjusted by manually moving each movable sleeve 4, so that the position of the wire hole on the cast prefabricated part A can be adjusted, which is more convenient to use.

[0032] Specifically, Figure 1 As shown, the first direction is the X direction, and the second direction is the Y direction; after the casting is completed, the movable sleeve 4 can be removed from the prefabricated mold together with the prefabricated part A, and then the movable sleeve 4 and the prefabricated mold can be separated.

[0033] refer to Figure 4 In an exemplary embodiment, the extrusion assembly 5 may include a fixed block 51, two moving blocks 52 and two springs 53, wherein the fixed block 51 is fixed to the moving sleeve 4; the two moving blocks 52 are arranged on opposite sides of the fixed block 51 in the second direction Y, the moving blocks 52 are slidably connected to the moving sleeve 4 and have the freedom to slide along the second direction Y; the two springs 53 correspond to the two moving blocks 52 one by one and are arranged between the corresponding moving blocks 52 and the fixed block 51, and the springs 53 extend along the second direction Y.

[0034] Specifically, when the movable sleeve 4 is located between the side mold 2 and the inner mold 3, the two springs 53 inside the movable sleeve 4 respectively push the two movable blocks 52 to move along the second direction Y and squeeze the inner mold 3 and the side mold 2, and the fixed block 51 provides support for the two springs 53 to achieve position limitation of the movable sleeve 4.

[0035] It should be understood that the position limitation of the movable sleeve 4 here is not completely immovable, and the specific position of the movable sleeve 4 can be adjusted manually. When adjusting, it is only necessary to overcome the friction between the two movable blocks 52 and the inner mold 3 and the side mold 2.

[0036] refer to Figure 4 In an exemplary embodiment, the prefabricated mold may also include a connecting sleeve 6, which corresponds one-to-one to the movable sleeve 4 and is sleeved on the outer periphery of the movable sleeve 4. The two ends of the connecting sleeve 6 respectively contact the side mold 2 and the inner mold 3. The connecting sleeve 6 is slidably connected to the movable sleeve 4 and has the freedom to slide along the second direction Y.

[0037] Specifically, when separating the preform A and the moving sleeve 4, it is only necessary to push the moving sleeve 4 at one end of the connecting sleeve 6 to push the moving sleeve 4 out of the connecting sleeve 6, which effectively solves the problem that the moving sleeve 4 is difficult to separate from the preform A. At this time, the connecting sleeve 6 can remain in the wire hole of the preform A to protect the line passing through the connecting sleeve 6, and the moving sleeve 4 can be reused.

[0038] refer to Figure 2 and Figure 3 In an exemplary embodiment, a groove 31 is provided on the side of the inner mold 3 facing the bottom mold 1, the inner mold 3 is slidably connected to the bottom mold 1 and has the freedom to slide along the second direction Y, and the inner mold 3 extrude the movable sleeve 4 along the second direction Y in response to the transmission force; the prefabricated mold may also include a driving component 7, the driving component 7 is located in the groove 31 and connects the bottom mold 1 and the inner mold 3, and the driving component 7 provides transmission force for the inner mold 3.

[0039] Specifically, during the installation of the movable sleeve 4, the bottom mold 1 can be placed vertically, that is, at this time the side mold 2 is in contact with the ground, and the frame space 22 is located above the lintel space 21. At this time, the movable sleeve 4 is placed at the target position inside the side mold 2, and the axial direction of the movable sleeve 4 is the same as the second direction Y. The inner mold 3 moves downward due to its own gravity and contacts the movable sleeve 4. At this time, the inner mold 3 is controlled by the driving component 7 to squeeze the movable sleeve 4, so that the position of the movable sleeve 4 can be fixed, and then the bottom mold 1 is placed normally on the ground for pouring. In this way, there is no need to manually move the movable sleeve 4 to the target position after the movable sleeve 4 is inserted into the inner mold 3 between the side mold 2, which is more convenient to use.

[0040] refer to Figure 3In an exemplary embodiment, a through hole 11 extending along a first direction X is provided on the bottom mold 1. When casting the prefabricated part A, the orthographic projection of the inner mold 3 on the bottom mold 1 covers the through hole 11; the driving assembly 7 may include a support portion 71, a screw rod 72, a gasket 73 and a knob 74, wherein the support portion 71 is fixed to a side of the first seat surface away from the second seat surface; the screw rod 72 passes through the support portion 71 and is threadedly connected to the support portion 71, and the axial direction of the screw rod 72 is the same as the second direction Y; the gasket 73 is rotatably connected to an end of the screw rod 72 close to the movable sleeve 4, and the gasket 73 has the freedom to rotate around the second direction Y; the knob 74 is fixed to an end of the screw rod 72 away from the gasket 73, and the orthographic projection of the knob 74 on the bottom mold 1 is located in the through hole 11.

[0041] Specifically, when the bottom mold 1 is placed vertically, the operator can put his hand into the through hole 11 and turn the knob 74, the knob drives the screw 72 to rotate, and the screw 72 is threadedly connected to the support part 71. When the screw 72 rotates, it can move along the second direction Y and drive the gasket 73 to extrude the inner mold 3, so that the inner mold 3 further extrude the movable sleeve 4, completing the process of controlling the inner mold 3 to extrude the movable sleeve 4 through the driving component 7.

[0042] Furthermore, the orthographic projection of the knob 74 on the bottom mold 1 can always be located in the through hole 11 , so that it is more convenient for the operator to insert his hand into the through hole 11 and drive the knob 74 to rotate.

[0043] It should be understood that the orthographic projection of the inner mold 3 on the bottom mold 1 covers the through hole 11, so when pouring concrete, the concrete will not flow out from the through hole 11 to affect the pouring work.

[0044] Among them, the gasket 73 is rotatably connected with the screw 72. When the gasket 73 conflicts with the inner mold 3, the knob 74 continues to be turned to drive the screw 72 to rotate. The screw 72 will not drive the gasket 73 to rotate, thereby preventing continuous friction between the gasket 73 and the inner mold 3, which affects the service life of the inner mold 3 or the gasket 73.

[0045] refer to Figure 3 In an exemplary embodiment, the prefabricated mold may also include two limit blocks 12 and two sliders 32, wherein the two limit blocks 12 are relatively arranged on the side of the first seat surface away from the second seat surface in the third direction and are both located in the groove 31, and the two limit blocks 12 are provided with sliding grooves on the sides away from each other, and the third direction is respectively perpendicular to the second direction Y and the first direction X; the two sliders 32 are relatively arranged in the groove 31 in the third direction and are fixed to the inner mold 3, and the two sliders 32 correspond to the two sliding grooves one by one and slide with the corresponding sliding grooves.

[0046] Specifically, Figure 3As shown, the third direction is the Z direction; the two sliders 32 are slidably matched with the two limit blocks 12 through two corresponding slide grooves, and the sliders 32 have the freedom to slide along the second direction Y; at the same time, the sliders 32 are fixed to the inner mold 3, and the limit blocks 12 are fixed to the bottom mold 1, so the inner mold 3 can slide relative to the bottom mold 1 along the second direction Y.

[0047] It should be understood that the slider 32 and the limit block 12 are both located in the groove 31, and the side of the inner mold 3 facing the bottom mold 1 should be in contact with the bottom mold 1, so that the slider 32 and the limit block 12 will not affect the normal casting of the prefabricated part A.

[0048] refer to Figure 1 and Figure 2 In an exemplary embodiment, the side mold 2 may include a fixed template 23 and a rotating template 24, wherein the fixed template 23 is fixed to the bottom mold 1; the rotating template 24 is arranged at the end of the movable sleeve 4 away from the inner mold 3 and is rotatably connected to the bottom mold 1, and the rotating template 24 has the freedom to rotate around a third direction Z. The rotating template 24 is connected to the fixed template 23 by bolts to lock the rotational freedom of the rotating template 24.

[0049] Specifically, when the pouring is completed, the bolts can be unscrewed and the rotating template 24 can be rotated. At this time, the moving block 52 in the moving sleeve 4 close to the rotating template 24 will extend out of the moving sleeve 4 under the push of the corresponding spring 53. At this time, the moving block 52 can be directly pulled to drive the corresponding moving sleeve 4 to separate from the prefabricated part A; at the same time, the moving block 52 in the moving sleeve 4 away from the rotating template 24 will squeeze the inner mold 3 under the push of the corresponding spring 53, and the fixed block 51 will be subjected to the reverse force to drive the moving sleeve 4 to separate from the prefabricated part A, and it is more convenient to separate the prefabricated part A and the moving sleeve 4.

[0050] Furthermore, rotating the rotating template 24 can continue to rotate the knob 74 to drive the inner mold 3 to squeeze the movable sleeve 4 along the second direction Y. At this time, the inner mold 3 will push the preform A to move along the second direction Y relative to the bottom mold 1 and the side mold 2. In this way, the preform A can be initially separated from the bottom mold 1 and the side mold 2, making it more convenient to separate the preform A.

[0051] refer to Figure 3 , Figure 6 and Figure 7 In an exemplary embodiment, when casting the precast part A, the slider 32 passes through the slide groove close to one end of the movable sleeve 4; in the second direction Y, the length of the slider 32 inserted into the slide groove is a, and the minimum distance between the knob 74 and the support portion 71 is b, and b is greater than or equal to a; in the first direction X, the height of the inner mold 3 is less than the height of the side mold 2.

[0052] Specifically, after the inner mold 3 moves along the second direction Y and drives the preform A to be initially separated from the bottom mold 1 and the side mold 2, the slider 32 slides out of the corresponding slide groove, that is, the slider 32 is separated from the corresponding limit block 12. At this time, the inner mold 3 can be pushed from the through hole 11 along the first direction X, and the inner mold 3 drives the preform A to move, so that the preform A can be completely separated from the bottom mold 1 and the side mold 2.

[0053] Among them, when b is greater than or equal to a, turning the knob 74 drives the inner mold 3 to move, and the inner mold 3 can stably drive the two sliders 32 to slide out of the corresponding sliding grooves, preventing the situation where the inner mold 3 cannot continue to move after the knob 74 moves to conflict with the support part 71, but the sliders 32 still do not slide out of the sliding grooves.

[0054] It should be understood that when the height of the inner mold 3 is less than the height of the side mold 2 , the cast prefabricated part A has a back plate that contacts the inner mold 3 in the first direction X, and the inner mold 3 can push the prefabricated part A to move along the first direction X.

[0055] refer to Figure 6 and Figure 7 In an exemplary embodiment, the preform A may include a lintel A1 and a frame A2 corresponding to the lintel space 21 and the frame space 22; in the third direction Z, the length of the lintel A1 is greater than the length of the frame A2.

[0056] Specifically, the thickness at the frame A2 can be 50mm, the thickness of the backboard can be 30mm or determined according to the thickness of the box body and the wall thickness; in the third direction Z, the length of the lintel A1 can be 500mm longer than the length of the frame A2, that is, the two ends of the lintel A1 extend out of the frame A2 by 250mm respectively; the prefabricated part A can be cast with C25 fine stone concrete.

[0057] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A prefabricated concrete mold for a reserved opening of a strong and weak current box, characterized in that: Used for casting a prefabricated part (A) installed at a reserved opening, the prefabricated mold comprises: A bottom mold (1) has a first seat surface and a second seat surface which are arranged opposite to each other in a first direction, wherein the first direction is a thickness direction of the bottom mold (1); A side mold (2) is arranged on a side of the first seat surface away from the second seat surface and encloses a casting space for the prefabricated part (A) together with the bottom mold (1), the casting space comprising a lintel space (21) and a frame space (22) distributed in sequence in a second direction, the second direction being perpendicular to the first direction; An inner mold (3) is arranged on a side of the first seat surface facing away from the second seat surface and is located in the frame space (22); A plurality of movable sleeves (4), all located in the lintel space (21) and extending along the second direction, with two ends of the movable sleeves (4) respectively fitting the side mold (2) and the inner mold (3); An extrusion assembly (5) corresponds to the plurality of movable sleeves (4) one by one and is arranged in the corresponding movable sleeve (4). The extrusion assembly (5) respectively extrude the side mold (2) and the inner mold (3) in response to a driving force.

2. The prefabricated concrete mold for the reserved opening of the strong and weak current boxes as claimed in claim 1, characterized in that: The extrusion assembly (5) comprises: A fixed block (51) fixed to the movable sleeve (4); Two moving blocks (52) are arranged on two opposite sides of the fixed block (51) in the second direction, the moving blocks (52) are slidably connected to the moving sleeve (4) and have the freedom to slide along the second direction; Two springs (53) correspond to the two moving blocks (52) one by one and are arranged between the corresponding moving blocks (52) and the fixed block (51); the springs (53) extend along the second direction.

3. The prefabricated concrete mold for the reserved opening of the strong and weak current boxes as claimed in claim 1, characterized in that: The prefabricated mold also includes: A connecting sleeve (6) corresponds to the movable sleeve (4) one by one and is sleeved on the outer circumference of the movable sleeve (4); two ends of the connecting sleeve (6) respectively contact the side mold (2) and the inner mold (3); the connecting sleeve (6) is slidably connected to the movable sleeve (4) and has the freedom to slide along the second direction.

4. The prefabricated concrete mold for the reserved openings of the strong and weak current boxes as claimed in claim 2, characterized in that: A groove (31) is provided on a side of the inner mold (3) facing the bottom mold (1); the inner mold (3) is slidably connected to the bottom mold (1) and has the freedom to slide along the second direction; the inner mold (3) presses the movable sleeve (4) along the second direction in response to the transmission force; the prefabricated mold further comprises: A driving component (7) is located in the groove (31) and connects the bottom mold (1) and the inner mold (3), and the driving component (7) provides the transmission force for the inner mold (3).

5. The prefabricated concrete mold for the reserved opening of the strong and weak current boxes as claimed in claim 4, characterized in that: The bottom mold (1) is provided with a through hole (11) extending along the first direction, and when the prefabricated part (A) is cast, the orthographic projection of the inner mold (3) on the bottom mold (1) covers the through hole (11); the driving assembly (7) comprises: A support portion (71) fixed to a side of the first seat surface facing away from the second seat surface; a screw rod (72) passing through the support portion (71) and being threadedly connected to the support portion (71), wherein the axial direction of the screw rod (72) is the same as the second direction; a gasket (73) rotatably connected to one end of the screw rod (72) close to the movable sleeve (4), the gasket (73) having a degree of freedom to rotate about the second direction; A knob (74) is fixed to an end of the screw rod (72) away from the gasket (73), and an orthographic projection of the knob (74) on the bottom mold (1) is located in the through hole (11).

6. The prefabricated concrete mold for the reserved openings of the strong and weak current boxes as claimed in claim 5, characterized in that: The prefabricated mold also includes: Two limit blocks (12) are arranged relatively on a side of the first seat surface away from the second seat surface in a third direction and are both located in the groove (31), and a sliding groove is provided on the sides of the two limit blocks (12) away from each other, and the third direction is perpendicular to the second direction and the first direction respectively; Two sliders (32) are arranged in the groove (31) in a relative manner in the third direction and are fixed to the inner mold (3); the two sliders (32) correspond to the two slide grooves one by one and are slidably matched with the corresponding slide grooves.

7. The prefabricated concrete mold for the reserved opening of the strong and weak current boxes as claimed in claim 6, characterized in that: The side mold (2) comprises: A fixed template (23) fixed to the bottom template (1); A rotating template (24) is arranged at one end of the movable sleeve (4) away from the inner mold (3) and is rotatably connected to the bottom mold (1); the rotating template (24) has the freedom to rotate about the third direction; the rotating template (24) is connected to the fixed template (23) by bolts to lock the rotational freedom of the rotating template (24).

8. The prefabricated concrete mold for the reserved openings of the strong and weak current boxes as claimed in claim 7, characterized in that: When casting the prefabricated part (A), the sliding block (32) passes through the sliding groove close to one end of the moving sleeve (4); In the second direction, the length of the sliding block (32) inserted into the sliding groove is a, the minimum distance between the knob (74) and the support portion (71) is b, and b is greater than or equal to a.

9. The prefabricated concrete mold for the reserved openings of the strong and weak current boxes as claimed in claim 7, characterized in that: The prefabricated component (A) comprises a lintel (A1) and a frame (A2) corresponding to the lintel space (21) and the frame space (22); In the third direction, the length of the lintel (A1) is greater than the length of the frame (A2).

10. The prefabricated concrete mold for the reserved opening of the strong and weak current boxes as claimed in claim 9, characterized in that: In the first direction, the height of the inner mold (3) is smaller than the height of the side mold (2).

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