阅读说明：本技术 高压电缆中间接头的制备方法 (Preparation method of high-voltage cable intermediate joint ) 是由 钟柏松 于 2021-08-05 设计创作，主要内容包括：本发明公开了高压电缆中间接头的制备方法,包括以下步骤：S1：将芯棒的一端锁定于活动模具的一端,并由控制系统控制横向合模机构带动活动模具向靠近固定模具的方向移动；S2：控制系统控制纵向锁模机构将固定模具与活动模具锁定；S3：通过注料咀向所述固定模具、所述活动模具的模腔内注射液态硅胶；S4：液态硅胶注射完成后,控制系统控制加热冷却系统对固定模具、活动模具及芯棒进行加热及冷却,令模腔内的液态硅胶硫化形成高压电缆中间接头成品,并对高压电缆中间接头成品进行降温冷却；S5：将冷却后的高压电缆中间接头成品取出。本发明可实现高压电缆中间接头的自动化生产,提高了高压电缆中间接头的生产效率及产品的合格率。(The invention discloses a preparation method of a high-voltage cable intermediate joint, which comprises the following steps: s1: locking one end of the core rod at one end of the movable mould, and controlling the transverse mould closing mechanism by the control system to drive the movable mould to move towards the direction close to the fixed mould; s2: the control system controls the longitudinal mold locking mechanism to lock the fixed mold and the movable mold; s3: injecting liquid silica gel into the die cavities of the fixed die and the movable die through the injection nozzle; s4: after the liquid silica gel is injected, the control system controls the heating and cooling system to heat and cool the fixed mold, the movable mold and the core rod, so that the liquid silica gel in the mold cavity is vulcanized to form a finished product of the high-voltage cable intermediate joint, and the finished product of the high-voltage cable intermediate joint is cooled; s5: and taking out the cooled high-voltage cable intermediate joint finished product. The automatic production device can realize the automatic production of the high-voltage cable intermediate joint, and improve the production efficiency of the high-voltage cable intermediate joint and the qualification rate of products.)

1. The preparation method of the high-voltage cable intermediate joint is characterized by comprising the following steps of:

s1: locking one end of the core rod at one end of the movable mould, and controlling the transverse mould-closing mechanism by the control system to drive the movable mould to move towards the direction close to the fixed mould until the movable mould is attached to one end of the fixed mould;

s2: the control system controls the longitudinal clamping mechanism to lock the fixed die and the movable die and enables the other end of the core rod to be locked at the other end of the fixed die;

s3: injecting liquid silica gel into the die cavities of the fixed die and the movable die through the injection nozzles, and controlling the injection amount of the liquid silica gel through a control system;

s4: after the liquid silica gel is injected, the control system controls the heating and cooling system to heat and cool the fixed mold, the movable mold and the core rod, so that the liquid silica gel in the mold cavity is vulcanized to form a finished product of the high-voltage cable intermediate joint, and the finished product of the high-voltage cable intermediate joint is cooled;

s5: and taking out the cooled high-voltage cable intermediate joint finished product.

2. The method for preparing the intermediate joint of the high-voltage cable according to claim 1, wherein in step S4, the method specifically comprises the following steps:

after the liquid silica gel is injected, the control system controls the heating and cooling system to convey hot water to the water channel of the fixed mold, the water channel of the movable mold and the water channel of the core rod, and the liquid silica gel in the mold cavity is vulcanized to form a finished product of the intermediate joint of the high-voltage cable;

after vulcanization is finished, the control system controls the heating and cooling system to convey cold water to the water channel of the fixed die, the water channel of the movable die and the water channel of the core rod, and the finished product of the high-voltage cable intermediate joint in the die cavity is cooled;

wherein, the time of the heating and cooling system for delivering hot water to the water channel of the core rod and the time of delivering hot water to the water channel of the fixed die and the water channel of the movable die are staggered.

3. The method for preparing the intermediate joint of the high-voltage cable according to claim 1 or 2, wherein in step S5, the method specifically comprises the following steps:

the control system controls the longitudinal mold locking mechanism to release the locking state of the fixed mold and the movable mold;

releasing the locking state of one end of the core rod and the movable die, and controlling the transverse die-closing mechanism to drive the movable die to move a certain distance in the direction away from the fixed die, so that the finished product of the high-voltage cable intermediate joint is separated from the die cavity of the movable die;

locking one end of the core rod and the movable die again, and releasing the locking state of the core rod and the fixed die;

controlling the transverse die-closing mechanism to drive the core rod and the high-voltage cable intermediate joint finished product to continuously move for a certain distance in the direction away from the fixed die;

and releasing the locking state of the core rod and the movable die, and taking down the core rod and the high-voltage cable intermediate joint finished product from the movable die.

4. The method for preparing an intermediate joint of a high-voltage cable according to claim 3,

before horizontal locking mechanism drives core rod and high tension cable intermediate head finished product to keeping away from the direction of fixed mould and continuing to move certain distance, still include:

the control system controls a lifting mechanism of the demoulding device to drive the fixed base to move upwards, and controls a limiting mechanism of the demoulding device to limit the lifting height of the lifting mechanism in the moving process;

the fixing base moves to the position below the finished product of the high-voltage cable intermediate connector, and the finished product of the high-voltage cable intermediate connector is supported through the fixing base;

after taking off core rod and high tension cable intermediate head finished product from the movable mould, still include:

the control system controls the limiting mechanism of the mold assembling and disassembling device to release the limiting of the lifting mechanism, and the lifting mechanism drives the fixed base to move downwards.

5. The method of claim 1, wherein before locking one end of the mandrel to one end of the movable mold, the control system controls the lifting mechanism of the mold loading and unloading device to move the fixed base upward, the mandrel is supported by the fixed base, and the lifting mechanism of the mold loading and unloading device drives the fixed base downward while the transverse clamping mechanism drives the movable mold to move in a direction close to the fixed mold.

6. The method for preparing an intermediate joint of a high-voltage cable according to claim 1 or 2,

chew through annotating the material to fixed mould before the injection liquid silica gel in the die cavity of movable mould, still include:

the fixed mould and the movable mould are provided with vent holes, and the control system controls the plugging sealing needles to plug the vent holes on the fixed mould and the movable mould;

in the process of vulcanizing the liquid silica gel in the die cavity to form a finished product of the high-voltage cable intermediate joint, the method further comprises the following steps:

pressure sensor on annotating the material and chewing the pressure value in real time monitoring die cavity to transmit the pressure value of monitoring to control system, when the pressure value that control system received reached the first threshold value of settlement, control system control shutoff was sealed the needle and is removed to the direction of keeping away from the exhaust hole on fixed mould, the movable mould, makes the shutoff seal the needle and leaves from the exhaust hole, and the gas in the die cavity is discharged through the exhaust hole.

7. The method for preparing the intermediate joint of the high-voltage cable according to claim 6, wherein in the process of injecting the liquid silicone rubber into the cavities of the fixed mold and the movable mold through the injection nozzle, the method further comprises the following steps:

a pressure sensor on the injection nozzle monitors the pressure value in the die cavity in real time and transmits the monitored pressure value to a control system;

and the control system receives the pressure value transmitted by the pressure sensor, controls the injection nozzle to automatically cut off the injection channel on the injection nozzle when the received pressure value reaches a set second threshold value, and stops injecting the liquid silica gel into the mold cavity.

8. The method for preparing the intermediate joint of the high-voltage cable as claimed in claim 1 or 2, wherein the longitudinal mold locking mechanism comprises an upper locking ring and a lower locking ring which are arranged oppositely up and down, and the control system controls the longitudinal mold locking mechanism to lock the fixed mold and the movable mold, and the method specifically comprises the following steps:

the control system firstly controls the lower locking ring to move upwards for a certain distance, then controls the upper locking ring to move downwards for a certain distance, and enables the locking convex parts on the upper locking ring to be arranged in the locking grooves of the fixed die and the movable die;

and then the control system continuously controls the lower locking ring to move upwards for a certain distance, and the locking convex parts of the lower locking ring are arranged in the locking grooves of the fixed die and the movable die, so that the locking state of the upper locking ring and the lower locking ring on the fixed die and the movable die is realized.

9. The method of claim 8, wherein the longitudinal clamping mechanism is configured such that in a locked state, the upper locking ring applies a downward force to the stationary mold and the movable mold, the upper locking ring applies a force to the stationary mold in a direction toward the movable mold via the locking protrusion and the locking groove, and the upper locking ring applies a force to the movable mold in a direction toward the stationary mold via the locking protrusion and the locking groove.

10. The method of claim 8, wherein the longitudinal clamping mechanism is in a locked state, the lower locking ring applies an upward force to the stationary mold and the movable mold, the lower locking ring applies a force to the stationary mold in a direction close to the movable mold through the locking protrusion and the locking groove, and the lower locking ring applies a force to the movable mold in a direction close to the stationary mold through the locking protrusion and the locking groove.

Technical Field

The invention relates to the technical field of manufacturing of cable intermediate connectors, in particular to a preparation method of a high-voltage cable intermediate connector.

Background

The cable joint is an indispensable component in a cable line, and when a circuit is long, two or more sections of cables need to be connected through the cable joint by using the cable joint.

The traditional high-voltage cable intermediate joint is generally produced by the following two methods:

1. a mould for producing a high-voltage cable connector is locked by a screw, then materials are injected into the mould, and the mould is placed into an oven for heating and forming after the materials are injected.

2. The other method is to lock the die by a large-scale die spotting machine, then inject the material in the die, and heat the material by a hot water machine after the material injection is finished.

However, in the process of implementing the present invention, the inventors found the following problems in the prior art: the two production modes have low automation degree, and more manual participation operations, thus leading to low production efficiency and low product percent of pass.

Disclosure of Invention

The invention aims to provide a preparation method of a high-voltage cable intermediate joint, which can realize automatic production of the high-voltage cable intermediate joint and improve the production efficiency of the high-voltage cable intermediate joint and the qualification rate of products.

The technical scheme is as follows:

the preparation method of the high-voltage cable intermediate joint comprises the following steps:

s1: locking one end of the core rod at one end of the movable mould, and controlling the transverse mould-closing mechanism by the control system to drive the movable mould to move towards the direction close to the fixed mould until the movable mould is attached to one end of the fixed mould;

s2: the control system controls the longitudinal clamping mechanism to lock the fixed die and the movable die and enables the other end of the core rod to be locked at the other end of the fixed die;

s3: injecting liquid silica gel into the die cavities of the fixed die and the movable die through the injection nozzles, and controlling the injection amount of the liquid silica gel through a control system;

s4: after the liquid silica gel is injected, the control system controls the heating and cooling system to heat and cool the fixed mold, the movable mold and the core rod, so that the liquid silica gel in the mold cavity is vulcanized to form a finished product of the high-voltage cable intermediate joint, and the finished product of the high-voltage cable intermediate joint is cooled;

s5: and taking out the cooled high-voltage cable intermediate joint finished product.

Further, in step S4, the method specifically includes the following steps:

after the liquid silica gel is injected, the control system controls the heating and cooling system to convey hot water to the water channel of the fixed mold, the water channel of the movable mold and the water channel of the core rod, and the liquid silica gel in the mold cavity is vulcanized to form a finished product of the intermediate joint of the high-voltage cable;

after vulcanization is finished, the control system controls the heating and cooling system to convey cold water to the water channel of the fixed die, the water channel of the movable die and the water channel of the core rod, and the finished product of the high-voltage cable intermediate joint in the die cavity is cooled;

wherein, the time of the heating and cooling system for delivering hot water to the water channel of the core rod and the time of delivering hot water to the water channel of the fixed die and the water channel of the movable die are staggered.

Further, in step S5, the method specifically includes the following steps:

the control system controls the longitudinal mold locking mechanism to release the locking state of the fixed mold and the movable mold;

releasing the locking state of one end of the core rod and the movable die, and controlling the transverse die-closing mechanism to drive the movable die to move a certain distance in the direction away from the fixed die, so that the finished product of the high-voltage cable intermediate joint is separated from the die cavity of the movable die;

locking one end of the core rod and the movable die again, and releasing the locking state of the core rod and the fixed die;

controlling the transverse die-closing mechanism to drive the core rod and the high-voltage cable intermediate joint finished product to continuously move for a certain distance in the direction away from the fixed die;

and releasing the locking state of the core rod and the movable die, and taking down the core rod and the high-voltage cable intermediate joint finished product from the movable die.

Further, before horizontal locking mechanism drives core rod and high tension cable intermediate head finished product to keeping away from the direction of fixed mould and continuing to move certain distance, still include:

the control system controls a lifting mechanism of the demoulding device to drive the fixed base to move upwards, and controls a limiting mechanism of the demoulding device to limit the lifting height of the lifting mechanism in the moving process;

the fixing base moves to the position below the finished product of the high-voltage cable intermediate connector, and the finished product of the high-voltage cable intermediate connector is supported through the fixing base;

after taking off core rod and high tension cable intermediate head finished product from the movable mould, still include:

the control system controls the limiting mechanism of the mold assembling and disassembling device to release the limiting of the lifting mechanism, and the lifting mechanism drives the fixed base to move downwards.

Furthermore, before one end of the core rod is locked at one end of the movable die, the control system controls the lifting mechanism of the die assembling and disassembling device to drive the fixed base to move upwards, the core rod is supported through the fixed base, and the lifting mechanism of the die assembling and disassembling device is controlled by the control system to drive the fixed base to move downwards while the transverse die assembling mechanism drives the movable die to move towards the direction close to the fixed die.

Further, through annotating the material and chewing to fixed mould, before the injection liquid silica gel in the die cavity of movable mould, still include:

the fixed mould and the movable mould are provided with vent holes, and the control system controls the plugging sealing needles to plug the vent holes on the fixed mould and the movable mould;

in the process of vulcanizing the liquid silica gel in the die cavity to form a finished product of the high-voltage cable intermediate joint, the method further comprises the following steps:

pressure sensor on annotating the material and chewing the pressure value in real time monitoring die cavity to transmit the pressure value of monitoring to control system, when the pressure value that control system received reached the first threshold value of settlement, control system control shutoff was sealed the needle and is removed to the direction of keeping away from the exhaust hole on fixed mould, the movable mould, makes the shutoff seal the needle and leaves from the exhaust hole, and the gas in the die cavity is discharged through the exhaust hole.

Further, chew through the notes material to fixed mould the in-process of injecting liquid silica gel in the die cavity of movable mould still includes:

a pressure sensor on the injection nozzle monitors the pressure value in the die cavity in real time and transmits the monitored pressure value to a control system;

and the control system receives the pressure value transmitted by the pressure sensor, controls the injection nozzle to automatically cut off the injection channel on the injection nozzle when the received pressure value reaches a set second threshold value, and stops injecting the liquid silica gel into the mold cavity.

Further, vertical clamping mechanism includes upper locking ring and lower locking ring that relative up-down set up, and control system control vertical clamping mechanism will fix mould and movable mould locking, specifically includes the following steps:

the control system firstly controls the lower locking ring to move upwards for a certain distance, then controls the upper locking ring to move downwards for a certain distance, and enables the locking convex parts on the upper locking ring to be arranged in the locking grooves of the fixed die and the movable die;

and then the control system continuously controls the lower locking ring to move upwards for a certain distance, and the locking convex parts of the lower locking ring are arranged in the locking grooves of the fixed die and the movable die, so that the locking state of the upper locking ring and the lower locking ring on the fixed die and the movable die is realized.

Further, in the longitudinal mold clamping mechanism, in a locked state, the upper locking ring applies a downward acting force to the fixed mold and the movable mold, the upper locking ring applies an acting force to the fixed mold in a direction close to the movable mold through the locking protrusion and the locking groove, and the upper locking ring applies an acting force to the movable mold in a direction close to the fixed mold through the locking protrusion and the locking groove.

Further, when the longitudinal mold clamping mechanism is in a locked state, the lower locking ring exerts upward acting force on the fixed mold and the movable mold, the lower locking ring exerts acting force in a direction close to the movable mold on the fixed mold through the locking protrusion and the locking groove, and the lower locking ring exerts acting force in a direction close to the fixed mold on the movable mold through the locking protrusion and the locking groove.

The following illustrates the advantages or principles of the invention:

when the preparation method is adopted to produce the high-voltage cable intermediate joint, after the core rod is fixed, the control system controls the movement of the movable mould to realize mould closing, controls the longitudinal mould locking mechanism to realize mould locking of the movable mould and the fixed mould, and then injects the liquid silica gel. After the silica gel injection is finished, the heating and cooling system is controlled by the control system to realize the vulcanization of the liquid silica gel and the cooling of the high-voltage cable intermediate joint finished product, and finally the high-voltage cable intermediate joint is taken out. The automatic production of the high-voltage cable intermediate connector is realized through the control of the control system, and the production efficiency and the product percent of pass are improved.

Drawings

Fig. 1 is a general flowchart of a method for manufacturing the intermediate joint for high-voltage cables according to the present embodiment.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

As shown in fig. 1, the present embodiment discloses a method for preparing an intermediate joint of a high voltage cable, which includes the following steps:

s1: one end of the core rod is locked at one end of the movable mould, and the control system controls the transverse mould closing mechanism to drive the movable mould to move towards the direction close to the fixed mould until the movable mould is attached to one end of the fixed mould.

The movable mould of this embodiment is relative setting about with fixed mould, before production high tension cable intermediate head, and the interval has one section distance between movable mould and the fixed mould. When the high-voltage cable intermediate joint is produced, firstly, the core rod is arranged in the die cavity of the movable die, and one end of the core rod protrudes out of the outer side of the movable die and is fixed through the nut. And then the control system controls the transverse die closing mechanism to drive the movable die to move towards the direction close to the fixed die, so that the die closing of the fixed die and the movable die is realized.

In order to facilitate the installation of the core rod, the control system controls the lifting mechanism of the demoulding device to drive the fixed base to move upwards while locking one end of the core rod at one end of the movable mould, and the core rod is supported by the fixed base. The installation of the core rod is simpler and more convenient through the support of the fixed base. In the process that the transverse die clamping mechanism drives the movable die to move towards the direction close to the fixed die, in order to prevent the fixed base from influencing the movement of the movable die, the control system controls the lifting mechanism of the die assembling and disassembling device to drive the fixed base to move downwards.

S2: the control system controls the longitudinal clamping mechanism to lock the fixed die and the movable die and enables the other end of the core rod to be locked at the other end of the fixed die.

After the fixed die and the movable die are closed, the fixed die and the movable die are locked by the longitudinal die locking mechanism. The longitudinal mold locking mechanism of the embodiment comprises an upper locking ring and a lower locking ring which are arranged up and down oppositely, and the fixed mold and the movable mold are positioned between the upper locking ring and the lower locking ring. When the locking of the fixed mold and the movable mold is realized, the control system firstly controls the lower locking ring to move upwards for a certain distance, then controls the upper locking ring to move downwards for a certain distance, and enables the locking convex parts on the upper locking ring to be arranged in the locking grooves of the fixed mold and the movable mold. And then the control system continuously controls the lower locking ring to move upwards for a certain distance, and the locking convex parts of the lower locking ring are arranged in the locking grooves of the fixed die and the movable die, so that the locking state of the upper locking ring and the lower locking ring on the fixed die and the movable die is realized.

And when the longitudinal clamping mechanism is in a locked state, the upper locking ring applies downward acting force to the fixed die and the movable die. The upper locking ring applies acting force to the fixed mould in the direction close to the movable mould through the locking bulge and the locking groove; the upper locking ring applies an acting force to the movable mold in a direction close to the fixed mold through the locking protrusion and the locking groove.

And when the longitudinal clamping mechanism is in a locked state, the lower locking ring applies upward acting force to the fixed die and the movable die. The lower locking ring applies an acting force to the direction close to the movable mold to the fixed mold through the locking protrusion and the locking groove, and the lower locking ring applies an acting force to the direction close to the fixed mold to the movable mold through the locking protrusion and the locking groove.

S3: injecting liquid silica gel into the die cavity of the fixed die and the movable die through the injection nozzle, and controlling the injection amount of the liquid silica gel through the control system.

This embodiment is provided with the notes material in the bottom of fixed mould and chews, and after fixed mould and movable mould locking, chew through annotating material machine and notes material and inject liquid silica gel into the die cavity of fixed mould and movable mould. The fixed mould of this embodiment and be provided with the exhaust hole on the movable mould respectively, to fixed mould before the liquid silica gel of injection in the die cavity of movable mould, control system control shutoff is sealed the needle and is carried out the shutoff to the exhaust hole on fixed mould and the movable mould.

The pressure sensor is arranged on the injection nozzle, the pressure sensor on the injection nozzle monitors the pressure value in the die cavity in real time, and the monitored pressure value is transmitted to the control system. When the pressure value that control system received reached the first threshold value of settlement, control system control shutoff was sealed the needle and is removed to the direction of keeping away from the exhaust hole on fixed mould, the movable mould, makes the shutoff seal the needle and leaves from the exhaust hole, and the gas in the mould intracavity is discharged through the exhaust hole to better control the pressure in the control mould intracavity.

Further, in the process of injecting liquid silica gel into the die cavities of the fixed die and the movable die, the method further comprises the following steps:

a pressure sensor on the injection nozzle monitors the pressure value in the die cavity in real time and transmits the monitored pressure value to a control system;

and the control system receives the pressure value transmitted by the pressure sensor, controls the injection nozzle to automatically cut off the injection channel on the injection nozzle when the received pressure value reaches a set second threshold value, and stops injecting the liquid silica gel into the mold cavity.

This embodiment passes through the pressure value of pressure sensor real-time supervision mould intracavity, and after the completion of annotating the material, forbid injecting liquid silica gel into the mould intracavity again through control system control to the injection volume of control liquid silica gel that can be accurate prevents that the injection volume of liquid silica gel is too much or too little.

S4: after the liquid silica gel is injected, the control system controls the heating and cooling system to heat and cool the fixed mold, the movable mold and the core rod, so that the liquid silica gel in the mold cavity is vulcanized to form a finished product of the high-voltage cable intermediate joint, and the finished product of the high-voltage cable intermediate joint is cooled.

Specifically, the method comprises the following steps:

in this embodiment, the water channels are provided on the fixed mold, the movable mold and the mandrel.

After the liquid silica gel is injected, the control system controls the heating and cooling system to convey hot water to the water channel of the fixed mold, the water channel of the movable mold and the water channel of the core rod, and the liquid silica gel in the mold cavity is vulcanized to form a finished product of the intermediate joint of the high-voltage cable.

And after vulcanization is finished, the control system controls the heating and cooling system to convey cold water to the water channel of the fixed die, the water channel of the movable die and the water channel of the core rod, and the finished product of the high-voltage cable intermediate joint in the die cavity is cooled.

Wherein, the time of the heating and cooling system for delivering hot water to the water channel of the core rod and the time of delivering hot water to the water channel of the fixed die and the water channel of the movable die are staggered, and the heating and cooling system simultaneously delivers hot water to the water channel of the fixed die and the water channel of the movable die.

S5: and taking out the cooled high-voltage cable intermediate joint finished product.

And after the high-voltage cable intermediate connector is prepared, taking out the finished product of the high-voltage cable intermediate connector from the die cavity of the movable die and the die cavity of the fixed die.

The method for taking out the middle joint of the high-voltage cable comprises the following steps:

the control system controls the longitudinal mold locking mechanism to release the locking state of the fixed mold and the movable mold;

releasing the locking state of one end of the core rod and the movable die, and controlling the transverse die-closing mechanism to drive the movable die to move a certain distance in the direction away from the fixed die, so that the finished product of the high-voltage cable intermediate joint is separated from the die cavity of the movable die;

locking one end of the core rod and the movable die again, and releasing the locking state of the core rod and the fixed die;

controlling the transverse die-closing mechanism to drive the core rod and the high-voltage cable intermediate joint finished product to continuously move for a certain distance in the direction away from the fixed die;

and releasing the locking state of the core rod and the movable die, and taking down the core rod and the high-voltage cable intermediate joint finished product from the movable die.

When the high-voltage cable intermediate joint finished product is taken down, firstly, the high-voltage cable intermediate joint finished product is separated from the die cavity of the movable die, and then, the high-voltage cable intermediate joint finished product is separated from the die cavity of the fixed die. And then, the high-voltage cable intermediate connector is driven to move out of the die cavity of the fixed die cavity through the fixed die, and finally, the high-voltage cable intermediate connector finished product and the core rod are taken down from the movable die.

In order to facilitate the dismounting of the high-voltage cable intermediate head finished product, before the transverse mold closing mechanism drives the core rod and the high-voltage cable intermediate head finished product to continue moving a certain distance in the direction away from the fixed mold, the method further comprises the following steps:

the control system controls a lifting mechanism of the demoulding device to drive the fixed base to move upwards, and controls a limiting mechanism of the demoulding device to limit the lifting height of the lifting mechanism in the moving process;

and the fixed base moves to the position below the finished high-voltage cable intermediate joint product and supports the finished high-voltage cable intermediate joint product through the fixed base.

After taking off core rod and high tension cable intermediate head finished product from the movable mould, still include:

the control system controls the limiting mechanism of the mold assembling and disassembling device to release the limiting of the lifting mechanism, and the lifting mechanism drives the fixed base to move downwards.

When the preparation method of the embodiment is used for producing the high-voltage cable intermediate joint, after the core rod is fixed, the control system controls the movable mould to move to realize mould closing, controls the longitudinal mould locking mechanism to realize mould locking of the movable mould and the fixed mould, and then injects the liquid silica gel. After the silica gel injection is finished, the heating and cooling system is controlled by the control system to realize the vulcanization of the liquid silica gel and the cooling of the high-voltage cable intermediate joint finished product, and finally the high-voltage cable intermediate joint is taken out. The automatic production of the high-voltage cable intermediate joint is realized through the control of the control system, and the production efficiency and the product percent of pass are improved.

The embodiments of the present invention are not limited thereto, and according to the above-mentioned contents of the present invention, the present invention can be modified, substituted or combined in other various forms without departing from the basic technical idea of the present invention.