阅读说明：本技术 一种电缆管生产用内支撑模芯 (Inner support mold core for cable pipe production ) 是由 吴数华 谢朝东 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种电缆管生产用内支撑模芯,旨在解决浇筑预制管道时因套管承受压力差易发生变形与破裂的技术问题,包括截面为弧形的支撑板、位于两个支撑板之间并对两个支撑板进行支撑且可促使两个支撑板向轴线同步收缩或展开的支撑机构,所述支撑板沿套管的轴线延长,所述支撑板的外表面与套管的内壁面曲率相同或小于套管内壁面的曲率；当电缆管浇筑成型时支撑机构扩张并促使支撑板外张支撑套管内壁,浇筑成型后其支撑机构收缩促使支撑板收缩并与套管内壁分离,通过支撑机构支撑支撑板,迫使支撑板外侧壁抵在套管的内侧壁上从而给套管提供支撑力,防止其因承受不住泥浆压力而变形、破裂。(The invention relates to an inner support mold core for cable pipe production, which aims to solve the technical problem that a casing pipe is easy to deform and crack due to pressure difference borne by the casing pipe when a prefabricated pipeline is poured, and comprises support plates with arc-shaped sections and a support mechanism, wherein the support mechanism is positioned between the two support plates and used for supporting the two support plates and promoting the two support plates to synchronously contract or expand towards an axis; when the cable pipe is cast and formed, the supporting mechanism expands and enables the supporting plate to expand outwards to support the inner wall of the sleeve pipe, after the cable pipe is cast and formed, the supporting mechanism contracts and enables the supporting plate to contract and separate from the inner wall of the sleeve pipe, the supporting plate is supported by the supporting mechanism, the outer side wall of the supporting plate is forced to abut against the inner side wall of the sleeve pipe, and therefore supporting force is provided for the sleeve pipe, and deformation and breakage of the sleeve pipe due to the fact that the supporting mechanism.)

1. An inner support mold core for producing a cable tube is inserted into a sleeve and supports the sleeve; the method is characterized in that: the support mechanism is positioned between the two support plates, supports the two support plates and can cause the two support plates to synchronously contract or expand towards the axis, the support plates extend along the axis of the sleeve, and the curvature of the outer surface of each support plate is the same as or smaller than that of the inner wall surface of the sleeve; the axes of the support plates are coincided on the same coaxial axis all the time when the support plates are synchronously contracted or expanded, when the cable pipe is cast and formed, the support mechanism expands and enables the support plates to expand outwards to support the inner wall of the sleeve pipe, and after the cable pipe is cast and formed, the support mechanism contracts to enable the support plates to contract and separate from the inner wall of the sleeve pipe.

2. The internal support mold core for producing the cable tube of claim 1, wherein: the supporting mechanism comprises an inner rotating shaft with the length not less than that of the supporting plate, at least one group of driving components are arranged on the inner rotating shaft, each driving component comprises at least two rotating sleeves in threaded connection with the inner rotating shaft at intervals, the two rotating sleeves are in threaded connection with the inner rotating shaft in different rotating directions, and when the inner rotating shaft rotates, the two rotating sleeves in the same component synchronously move in the opposite direction or the reverse direction on the inner rotating shaft;

the axial side wall of the rotating sleeve is connected with the supporting plate through a connecting rod, two ends of the connecting rod are respectively provided with a hinge hole, and the connecting rod is hinged with the inner wall of the supporting plate and the inner wall of the rotating sleeve through the hinge holes; when the two rotating sleeves in the same group synchronously move in opposite directions or in opposite directions on the inner rotating shaft, the rotating sleeves can drive the connecting rod to drive the supporting plate to expand or contract.

3. The internal support mold core for producing the cable tube of claim 2, wherein: the driving components are arranged in a plurality of groups at intervals.

4. The internal support mold core for producing the cable tube of claim 1, wherein: the supporting mechanism comprises an inner rotating shaft with the length not less than that of the supporting plate, the left part and the right part of the inner rotating shaft are respectively provided with reverse threads, and the supporting mechanism also comprises at least two rotating sleeves, the rotating sleeves are in threaded connection with the threads of the left part and the right part of the inner rotating shaft, and when the inner rotating shaft rotates, the rotating sleeves positioned on the left part and the right part of the inner rotating shaft synchronously move in the opposite direction or the reverse direction on the inner rotating shaft;

the axial side wall of the rotating sleeve is connected with the supporting plate through a connecting rod, two ends of the connecting rod are respectively provided with a hinge hole, and the connecting rod is hinged with the inner wall of the supporting plate and the inner wall of the rotating sleeve through the hinge holes; the connecting rod on the left half part of the rotating shaft of the inner rotating shaft inclines towards the middle part, the connecting rod on the right half part of the rotating shaft of the inner rotating shaft also inclines towards the middle part, and when the inner rotating shaft synchronously moves towards the opposite direction or moves towards the opposite direction, the rotating sleeve can drive the connecting rod to drive the supporting plate to expand or contract outwards.

5. The internal support mold core for producing the cable tube according to claim 2 or 4, wherein: the rotary sleeve is provided with a plurality of connecting holes along the side wall thereof, one supporting plate corresponds to two connecting holes, a first connecting shaft is arranged in each connecting hole, one end of each connecting rod is hinged to the corresponding first connecting shaft through a hinge hole and is positioned in the corresponding connecting hole, the other end of each connecting rod is hinged to the corresponding supporting plate, and the two connecting rods positioned on the same supporting plate are symmetrically distributed on the two sides of the same supporting plate.

6. The internal support mold core for producing the cable tube of claim 1, wherein: the supporting plate is provided with a plurality of holes which are arranged at intervals along the length direction of the supporting plate, and the holes are in one shape or the combination of at least two shapes of round holes, oval holes, rectangular holes and waist-shaped holes.

7. The internal support mold core for producing the cable tube according to claim 2 or 4, wherein: the support plates are symmetrically arranged about the inner rotary shaft, and the collinear axes are the axes of the inner rotary shaft.

8. The internal support mold core for producing the cable tube according to claim 2 or 4, wherein: it is same the backup pad is connected with same rotatory sleeve circumference lateral wall through two connecting rods, and the connecting rod that same rotatory sleeve and same backup pad are connected is "V" type structure setting.

9. The internal support mold core for producing the cable tube according to claim 2 or 4, wherein: both ends of the inner rotating shaft extend to the outside of both ends of the supporting plate respectively.

10. The internal support mold core for producing the cable tube according to claim 2 or 4, wherein: two ends of the inner rotating shaft respectively bend and extend towards the side direction to form a rotating holding part.

Technical Field

The invention relates to the technical field of auxiliary tools for electric cable pipe production, in particular to an inner support mold core for cable pipe production.

Background

The inner sleeve of the embedded cable pipe can not bear excessive pressure during pouring, so that the plastic pipe is deformed or even damaged during pouring, a mold core is added in the plastic pipe to increase the pressure resistance of the plastic pipe, and after the mold core in the shape of a circular pipe is added, the plastic pipe can be poured due to the support of the mold core.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, adapt to the practical requirements and provide the inner support mold core for producing the cable tube.

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

the mold core is inserted into the sleeve and supports the sleeve, and comprises at least two support plates with arc sections and a support mechanism which is positioned between the two support plates and supports the two support plates and can cause the two support plates to synchronously contract or expand towards an axis, the support plates are extended along the axis of the sleeve, and the curvature of the outer surfaces of the support plates is the same as or smaller than that of the inner wall surface of the sleeve; a plurality of the axis when the backup pad contracts or expands synchronously coincides on the same coaxial axis all the time, when the cable pipe is poured and formed, the supporting mechanism expands and causes the backup pad to expand outwards to support the inner wall of the sleeve, after the cable pipe is poured and formed, the supporting mechanism contracts to cause the backup pad to contract and separate from the inner wall of the sleeve, the backup pad expands through the supporting mechanism, so that the sleeve can be supported after the mold core of the design is plugged into the sleeve, the deformation and damage of the sleeve due to the fact that the mold core cannot bear pouring pressure when the sleeve is poured are prevented, after the pouring is completed, the backup pad is driven to contract through the contraction of the supporting mechanism, and a gap is formed between the backup pad and the inner wall of the sleeve, so that the mold core.

The supporting mechanism comprises an inner rotating shaft with the length not smaller than that of the supporting plate, at least one group of driving assemblies are arranged on the inner rotating shaft, and the plurality of groups of driving assemblies can be driven by the inner rotating shaft simultaneously, so that synchronous contraction or expansion is realized.

The axial side wall of the rotating sleeve is connected with the supporting plate through a connecting rod, two ends of the connecting rod are respectively provided with a hinge hole, and the connecting rod is hinged with the inner wall of the supporting plate and the inner wall of the rotating sleeve through the hinge holes; when the two rotating sleeves in the same group synchronously move in opposite directions or opposite directions on the inner rotating shaft, the rotating sleeves can drive the connecting rod to drive the supporting plate to expand or contract.

The supporting mechanism comprises an inner rotating shaft with the length not less than that of the supporting plate, the left part and the right part of the inner rotating shaft are respectively provided with reverse threads, the supporting mechanism further comprises at least two rotating sleeves, the rotating sleeves are in threaded connection with the threads of the left part and the right part of the inner rotating shaft, the rotating sleeves positioned on the left part and the right part of the inner rotating shaft synchronously move in the opposite direction or the reverse direction on the inner rotating shaft when the inner rotating shaft rotates, the axial side walls of the rotating sleeves are connected with the supporting plate through connecting rods, the two ends of each connecting rod are respectively provided with hinge holes, and the connecting rods are hinged with the inner wall of the supporting plate and the inner wall of; the connecting rod that lies in interior rotation axis left half rotation axis on inclines to the middle part, and the connecting rod that lies in interior rotation axis right half rotation axis on also inclines to the middle part, and when driving rotatory sleeve motion through rotating interior rotation axis, rotatory sleeve drives the connecting rod that the slope set up and is contracting and expanding, and the connecting rod that the slope set up can reduce the resistance when moving to reduce workman's working strength, when synchronous looks or reverse motion on the interior rotation axis, its rotatory sleeve can make the connecting rod drive the backup pad and open outward or contract.

Specifically, a plurality of connecting holes are formed in the side wall of the rotating sleeve, one supporting plate corresponds to two connecting holes, a first connecting shaft is arranged in each connecting hole, one end of each connecting rod is hinged to the corresponding first connecting shaft through a hinge hole and located in the corresponding connecting hole, the other end of each connecting rod is hinged to the corresponding supporting plate, and the two connecting rods located in the same supporting plate are symmetrically distributed on the two sides of the same supporting plate.

Specifically, a plurality of holes are formed in the supporting plate and are arranged at intervals along the length direction of the supporting plate, and the holes are one of or a combination of at least two of round holes, oval holes, rectangular holes and waist-shaped holes.

Specifically, the supporting plate is symmetrically arranged relative to the inner rotating shaft, the collinear axis is the axis of the inner rotating shaft, and the inner rotating shaft is arranged on the symmetrical axis of the supporting plate, so that the stress of the inner rotating shaft is uniform, and the service life of the inner rotating shaft is prolonged.

It is specific, same the backup pad is connected with same rotatory sleeve circumference lateral wall through two connecting rods, and the connecting rod that same rotatory sleeve is connected with same backup pad is "V" type structure setting, through two the connecting rod supports the backup pad and makes backup pad upper surface and sleeve pipe wall remain the relation of face contact throughout to the stress area of sleeve pipe with the backup pad has been increased, the cracked condition is difficult to appear when the local atress of sleeve pipe.

Specifically, for convenience in use, two ends of the inner rotating shaft extend to the outer portions of two ends of the supporting plate respectively, two ends of the inner rotating shaft respectively bend and extend towards the lateral direction to form a rotating holding portion, and the inner rotating shaft can be conveniently rotated by the arrangement of the holding portion, so that the expansion or contraction state of the supporting mechanism can be conveniently changed.

The invention has the beneficial effects that:

support through supporting mechanism the backup pad expansion can be so that support the sleeve pipe after filling in the sleeve pipe with the mold core of this design, prevents that it from warping the damage because of bearing not living pouring pressure when pouring, after pouring the completion, through supporting mechanism's shrink, drives the backup pad shrink for backup pad and cover intraductal wall form the clearance, thereby easily take out the mold core, and is very convenient, practical in the use.

Drawings

FIG. 1 is a schematic diagram of the principal structure of the present design;

FIG. 2 is a schematic side view of the design;

FIG. 3 is a schematic structural section view of a support mechanism of the present design;

FIG. 4 is a schematic view of another embodiment of the present design;

FIG. 5 is a schematic view of the support shaft structure of the present design;

FIG. 6 is a schematic diagram of the collar structure of the present design;

FIG. 7 is a schematic view of the structure of the connecting rod of the present design;

fig. 8 is a schematic structural diagram of the support plate of the present design.

1. A support plate; 2. a support mechanism; 3. a sleeve;

101. an aperture; 102. a second connecting shaft;

201. an inner rotating shaft; 202. a grip portion; 203. rotating the sleeve; 205. connecting holes; 206. a first connecting shaft; 207. a connecting rod; 208. a drive assembly; 209. a hinge hole.

Detailed Description

The design is further illustrated below with reference to the figures and examples:

example 1: an inner support mold core for producing a cable tube is shown in figures 1, 2, 3, 5, 6, 7 and 8.

The mold core of the design is inserted into a sleeve 3 and supports the sleeve, and comprises at least two support plates 1 with arc-shaped sections and a support mechanism 2 which is positioned between the two support plates 1, supports the two support plates 1 and can enable the two support plates 1 to synchronously contract or expand towards an axis, wherein the support plates 1 extend along the axis of the sleeve 3, the curvature of the outer surface of the support plate 1 and the inner wall surface of the sleeve 3 is the same as or smaller than that of the inner wall surface of the sleeve 3, and the curvature is reduced to reduce the contact area between the support plates and the inner wall of the sleeve so as to be convenient for being pulled out from the inner part of the sleeve.

In use, a plurality of axes of the supporting plates 1 are coincided on the same coaxial axis all the time when the supporting plates are synchronously contracted or expanded, when a cable pipe is cast and formed, the supporting mechanism 2 is expanded to enable the supporting plates 1 to expand to support the inner wall of the sleeve 3, after the cable pipe is cast and formed, the supporting mechanisms 2 are contracted to enable the supporting plates 1 to contract and separate from the inner wall of the sleeve 3, the supporting plates 1 are supported by the supporting mechanisms 2 to enable the sleeve 3 to be supported after the mold core of the design is plugged into the sleeve 3, the deformation and damage of the sleeve 3 caused by the fact that the sleeve cannot bear casting pressure when the cable pipe is cast are prevented, after the cable pipe is cast, the supporting plates 1 are driven to contract through the contraction of the supporting mechanisms 2, gaps are formed between the supporting plates 1 and the inner wall of.

Specifically, the support mechanism 2 includes an inner rotating shaft 201 having a length not less than the length of the support plate 1, a plurality of sets of driving assemblies 208 are disposed on the inner rotating shaft 201, the plurality of sets of driving assemblies 208 can be simultaneously driven by the inner rotating shaft 201 to achieve synchronous contraction or expansion, and more specifically, a single driving assembly 208 includes two rotating sleeves 203 screwed on the inner rotating shaft 201 at intervals, the two rotating sleeves 203 are screwed on the inner rotating shaft 201 in different directions from each other, and when the inner rotating shaft 201 rotates, the two rotating sleeves 203 in the same assembly synchronously move towards or away from each other on the inner rotating shaft 201, meanwhile, the axial side walls of the rotating sleeves 203 in the present design are connected to the support plate 1 through connecting rods 207, hinge holes 209 are disposed at two ends of the connecting rods 207, and the connecting rods 207 are connected to the inner wall of the support plate 1 through the hinge holes 209, The inner wall of the rotating sleeve 203 is hinged; when the two rotating sleeves 203 in the same group synchronously move in the opposite direction or the opposite direction on the inner rotating shaft 201, the rotating sleeves 203 can enable the connecting rod 207 to drive the supporting plate 1 to expand or contract, and different parts of the supporting plate 1 can be synchronously contracted or expanded through the design, so that the uniformity and the stability of the supporting force of the supporting plate 1 along the axial direction are ensured.

Specifically, for right the bracing piece is connected, its rotatory sleeve 203 is equipped with a plurality of connecting hole 205, one along its lateral wall backup pad 1 corresponds two connecting hole 205, be equipped with first connecting axle 206 in the connecting hole 205, connecting rod 207 one end pass through hinge hole 209 articulate in on the first connecting axle 206 and be located in the connecting hole 205, the other end articulate in on the backup pad 1, the connecting rod 207 that is located on same backup pad 1 is two and symmetric distribution in same backup pad 1 both sides, so can realize that a rotatory sleeve 203 is connected with one of them backup pad through two connecting rods.

It is specific, it is same backup pad 1 is connected with same rotatory sleeve 203 circumference lateral wall through two connecting rods 207, and the connecting rod 207 that same rotatory sleeve 203 and same backup pad 1 are connected is "V" type structure setting, through two connecting rod 207 supports backup pad 1 and makes backup pad 1 upper surface and 3 pipe walls of sleeve pipe keep face contact or line contact's relation throughout to the lifting surface area of sleeve pipe 3 with backup pad 1 has been increased, the pressurized deformation and the cracked condition are difficult to appear when the local atress of sleeve pipe 3.

Furthermore, the supporting plate 1 is provided with the holes 101, the holes 101 are arranged at intervals along the length direction of the supporting plate 1, the holes 101 are one or a combination of at least two of a circular hole, an elliptical hole, a rectangular hole and a kidney-shaped hole, the cross-sectional area of the sleeve and the supporting plate can be reduced when the supporting plate is in contact with the inner wall of the sleeve through the design of the holes, the friction force between the sleeve and the supporting plate is reduced, and the supporting plate is easy to pull out.

In this embodiment, the support plate 1 is symmetrically disposed about the inner rotating shaft 201, and the collinear axis is the axis of the inner rotating shaft 201.

Specifically, for convenience of use, two ends of the inner rotating shaft 201 extend to the outer portions of two ends of the supporting plate 1, two ends of the inner rotating shaft 201 respectively bend and extend in the lateral direction to form a rotating holding portion 202, and the holding portion 202 is arranged to facilitate rotation of the inner rotating shaft 201, so that the expansion or contraction state of the supporting mechanism 2 is changed conveniently.

Example 2: an inner support mold core for producing a cable tube is shown in figure 4.

The supporting mechanism 2 comprises an inner rotating shaft 201 with a length not less than that of the supporting plate 1, wherein reverse threads are respectively arranged on the left part and the right part of the inner rotating shaft 201, the supporting mechanism further comprises at least two rotating sleeves 203, the rotating sleeves 203 are in threaded connection with the threads on the left part and the right part of the inner rotating shaft 201, when the inner rotating shaft 201 rotates, the rotating sleeves 203 positioned on the left part and the right part of the inner rotating shaft 201 synchronously move towards or towards each other on the inner rotating shaft 201, the axial side walls of the rotating sleeves 203 are connected with the supporting plate 1 through connecting rods 207, two ends of the connecting rods 207 are respectively provided with hinge holes 209, and the connecting rods 207 are hinged with the inner wall of the supporting plate 1 and the inner wall of the rotating sleeves 203; the connecting rod 207 on the left half rotating shaft of the inner rotating shaft 201 inclines towards the middle part, the connecting rod 207 on the right half rotating shaft of the inner rotating shaft 201 also inclines towards the middle part, when the inner rotating shaft 201 is rotated to drive the rotating sleeve 203 to move, the rotating sleeve 203 drives the connecting rod 207 which is obliquely arranged to contract and expand, the connecting rod 207 which is obliquely arranged can reduce the resistance during the movement, thereby reducing the working intensity of workers, and when the inner rotating shaft 201 synchronously moves in opposite directions or moves in reverse directions, the rotating sleeve 203 can cause the connecting rod 207 to drive the supporting plate 1 to expand or contract.

The inner support mold core for producing the cable tube has the following use process:

before the mold core of the design is inserted into the sleeve 3, the supporting mechanism 2 is positioned between the two supporting plates 1, the driving assembly 208 is in threaded connection with the inner rotating shaft 201, the inner rotating shaft 201 is rotated clockwise, at the moment, the rotating sleeves 203 of the driving assembly 208 in the same group are far away from each other, the two ends of the inclined connecting rod 207 are respectively connected with the supporting plates 1 and the rotating sleeves 203, the inclined angle of the axes of the connecting rod 207 and the rotating sleeves 203 is reduced when the two sleeves are far away from each other, the supporting plates 1 are driven to move close to the axes of the rotating sleeves 203, and the supporting plates 1 are driven to contract due to the fact that the supporting plates 1 move towards the axes of the rotating sleeves 203, so that the outer contour of the supporting plates 1 is smaller than the outer contour of an.

After the supporting plate 1 is contracted, the supporting plate is inserted into the sleeve 3 and extends out from the other end of the sleeve 3, the inner rotating shaft 201 can be rotated anticlockwise according to the mode, because the curvature of the outer side wall of the supporting plate 1 is the same as that of the inner wall of the sleeve 3 or smaller than that of the inner wall of the sleeve, when the inner rotating shaft 201 is rotated anticlockwise, the supporting mechanism 2 is expanded to enable the outer side wall of the supporting plate 1 to be attached to the inner wall of the sleeve 3, so that the inner wall of the sleeve can be supported, and pouring.

Pour the completion back, clockwise rotation interior rotation axis 201, the axis direction that the backup pad 1 that supporting mechanism 2 shrink drove and was laminated with the sleeve pipe 3 inner wall this moment moves to backup pad 1 and sleeve pipe 3 separation and produce the interval and can take out the mold core, and is very convenient when making this design use through use and dismantlement mode as above.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.