Medium-voltage cable conductor shielding mold

Abstract

The utility model discloses a medium-voltage cable conductor shielding mould which comprises an inner mould sleeve and a mould core, the inner mould sleeve and the mould core are coaxially arranged, a feeding channel is reserved between the inner mould sleeve and the mould core, a sleeve and a connecting block connected with the sleeve are sleeved on the mould core, and the side wall of the sleeve is the inner wall of the feeding channel; the device can ensure that the flow channel is smooth and is suitable for processing cables of various models.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable preparation, in particular to a medium-voltage cable conductor shielding mold. Background Art

[0002] The main function of conductor shielding is to even out the electric field on the conductor surface and prevent partial discharge caused by gaps between the conductor and the insulation layer. 2 The following conductors are not wrapped with a semi-conductive shielding layer. After direct three-layer co-extrusion, the conductor shield is easily embedded in the conductor, causing the insulation to bulge locally, resulting in local electric field strength concentration, affecting the cable life. This situation is a common phenomenon in the industry and is also an indicator that power users are gradually paying attention to.

[0003] When the cable is extruded, the flow path is blocked, causing plastic to be retained or accumulated, resulting in local bulges, which has a great impact on the quality of the cable. Utility Model Content

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a medium voltage cable conductor shielding mold.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a medium-voltage cable conductor shielding mold, including an inner film sleeve and a mold core, the inner film sleeve and the mold core are coaxially arranged, a feed channel is left between the inner film sleeve and the mold core, a sleeve and a connecting block connected to the sleeve are sleeved on the mold core, and the side wall of the sleeve is the inner wall of the feed channel.

[0007] Furthermore, a first cavity is provided on the connecting block, an insertion rod is provided at one end of the sleeve, and a groove for inserting the insertion rod is provided on the side wall of the first cavity.

[0008] Furthermore, a first protrusion is provided at one end of the insertion rod, a first movable block is provided in the cavity, a slope corresponding to the insertion rod is provided at the bottom of the first movable block, a second protrusion is provided at the bottom of the slope, and a curved surface is provided on the second protrusion.

[0009] Furthermore, a plurality of temperature control cavities are provided on the side wall of the mold core, the temperature control cavities are interconnected, and a plurality of first through grooves are provided on the side wall of the temperature control cavity.

[0010] Furthermore, a movable plate is provided in the temperature control cavity, a plurality of second through grooves corresponding to the first through grooves are provided on the movable plate, and the movable plate is slidably connected to the top of the temperature control cavity.

[0011] Furthermore, a second cavity is provided on the connecting block, a first extension rod is provided on the movable plate, the first extension rod is passed through the second cavity, a push plate is provided on the first extension rod, and a push rod is provided in the second cavity.

[0012] Furthermore, a second movable block is provided in the second cavity, a first push block is provided on the second movable block, the first push block is located at the bottom of the push rod, and a groove is provided on the end surface of the sleeve.

[0013] Furthermore, a third protrusion is provided on the connecting block, a first movable groove is provided on the third protrusion, a movable rod and a first spring are provided in the first movable groove, the first spring connects the movable rod to the first movable groove, and the first movable block is connected to the movable rod through a first connecting rod.

[0014] Furthermore, a second extension rod is provided on the second movable block, the top end of the second extension rod passes through the third protrusion, and the first connecting rod is above the second extension rod; a third movable block is provided on the first connecting rod, the third movable block is provided with a locking tooth, and the second extension rod is provided with a locking groove corresponding to the locking tooth.

[0015] Furthermore, a second movable groove is provided on the movable rod, a second push block and a second spring are provided in the second movable groove, the second spring connects the second push block to the second movable groove, and the second push block is connected to the third movable block via a second connecting rod.

[0016] The utility model is beneficial in that it provides a medium voltage cable conductor shielding mold which ensures smooth flow passages and avoids plastic retention or accumulation and is adaptable to cables of various models. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0018] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0019] In the attached picture:

[0020] Figure 1 The figure is a schematic structural diagram of a medium voltage cable conductor shielding mold in one embodiment of the utility model.

[0021] Figure 2 for Figure 1 A schematic diagram of the core structure of a medium voltage cable conductor shielding mold in the illustrated embodiment.

[0022] Figure 3 for Figure 1 A cross-sectional view of a first cavity of a medium voltage cable conductor shielding mold in the illustrated embodiment.

[0023] Figure 4 for Figure 3 Enlarged view of point A in .

[0024] Figure 5 for Figure 1 A cross-sectional view of the second cavity of the medium voltage cable conductor shielding mold in the illustrated embodiment.

[0025] Figure 6 for Figure 5 Enlarged view of point B in .

[0026] Figure 7 for Figure 1 A cross-sectional view of a connection block of a medium voltage cable conductor shielding mould in the illustrated embodiment.

[0027] Figure 8 for Figure 7 Enlarged view of point C in the figure.

[0028] The meanings of the reference numerals in the figures are as follows:

[0029] 101, die; 102, inner film sleeve; 103, core; 1031, temperature control chamber; 1032, first through groove; 104, sleeve; 1041, groove; 105, connecting block; 106, plug rod; 1061, first protrusion; 107, first movable block; 1071, second protrusion; 108, first connecting rod; 109, movable plate; 1091, second through groove; 1092, first extension rod; 1093, push plate; 110, push rod; 111, second movable block; 1111, first push block; 1112, second extension rod; 1113, slot; 112, movable rod; 1121, first spring; 113, third movable block; 1131, latching tooth; 114, second push block; 1141, second spring; 115, second connecting rod. DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0031] It should also be noted that, for ease of description, only the parts related to the relevant utility model are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0032] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0034] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] like Figure 1-8 As shown, a medium-voltage cable conductor shielding mold includes an opening mold 101, an inner film sleeve 102 and a core mold 103. The core mold 103 is connected to the sleeve by threads, and then the core mold 103, the inner film sleeve 102 and the opening mold 101 are coaxially installed on the machine head in sequence. A feed channel is left between the inner film sleeve 102 and the core mold 103. A sleeve 104 and a connecting block 105 connected to the sleeve 104 are sleeved on the core mold 103. The side wall of the sleeve 104 is the inner wall of the feed channel, and the sleeve 104 is a conical structure.

[0037] A first cavity is provided on the connecting block 105, an insertion rod 106 is provided at one end of the sleeve 104, and a groove for inserting the insertion rod 106 is provided on the side wall of the first cavity; a first protrusion 1061 is provided at one end of the insertion rod 106, and a first movable block 107 is provided in the cavity, an inclined surface corresponding to the insertion rod 106 is provided at the bottom of the first movable block 107, a second protrusion 1071 is provided at the bottom of the inclined surface, and an arc surface is provided on the side wall of the second protrusion 1071 facing the groove.

[0038] A plurality of temperature control cavities 1031 are provided on the side wall of the mold core 103, and the temperature control cavities 1031 are interconnected. A plurality of first through grooves 1032 are provided on the side wall of the temperature control cavity 1031, and the temperature control cavity 1031 is used to introduce hot air or cooling water. The temperature of the mold core 103 and the sleeve 104 is controlled to ensure the melting and flow properties of the plastic and extend the service life of the mold. Through the provision of the first through grooves 1032, the temperature change in the temperature control cavity 1031 can more directly affect the sleeve 104, thereby ensuring the flow properties of the plastic.

[0039] A movable plate 109 is provided in the temperature control cavity 1031, and a plurality of second through grooves 1091 corresponding to the first through grooves 1032 are provided on the movable plate 109, and the movable plate 109 is slidably connected to the top of the temperature control cavity; a second cavity is provided on the connecting block 105, and a first extension rod 1092 is provided on the movable plate 109, and the first extension rod 1092 is passed through the second cavity, and a push plate 1093 is provided on the first extension rod 1092, and a push rod 110 is provided in the second cavity.

[0040] A third movable groove is provided on the inner wall of the second cavity, a second movable block 111 is provided in the third movable groove, a first push block 1111 is provided on the second movable block 111, the first push block 1111 is located in the second cavity and at the bottom of the push rod 110, and a groove 1041 is provided on the end surface of the sleeve 104.

[0041] A third protrusion is provided on the top of the connecting block 105, and a first movable groove is provided on the third protrusion. A movable rod 112 and a first spring 1121 are provided in the first movable groove. The first spring 1121 connects the movable rod 112 to the first movable groove. The first movable block 107 is connected to the movable rod 112 through a first connecting rod 108.

[0042] The second movable block 111 is provided with a second extension rod 1112, the second extension rod 1112 passes through the third movable groove, the top end of the second extension rod 1112 is above the connecting block 105, and the first connecting rod 108 is above the second extension rod 1112; the first connecting rod 108 is provided with a third movable block 113, the third movable block 113 is provided with a latching tooth 1131, the first connecting rod 108 is provided with a third through groove for the third movable block 113 to move, the third movable block 113 can drive the latching tooth 1131 to move, and the second extension rod 1112 is provided with a latching groove 1113 corresponding to the latching tooth 1131.

[0043] The movable rod 112 is provided with a second movable groove, in which a second push block 114 and a second spring 1141 are provided. The second spring 1141 connects the second push block 114 to the second movable groove. The second push block 114 is connected to the third movable block 113 via a second connecting rod 115 .

[0044] The sleeve 104 can be replaced according to the processing of different cables to adapt to cables of various specifications. After the cable processing is completed, the sleeve 104 is removed from the mold core 103 to clean the sleeve 104, thereby reducing the difficulty of cleaning the mold.

[0045] When installing the sleeve 104, the sleeve 104 is directly inserted into the mold core 103, the insertion rod 106 is aligned with the connecting block 105, the insertion rod 106 is directly inserted into the first cavity, the first protrusion 1061 is pressed against the arc surface of the second protrusion 1071 to push the first movable block 107 to move, and the first protrusion 1061 moves to the inside of the second protrusion 1071 and presses against the side wall of the second protrusion 1071 to fix the sleeve 104; when the sleeve 104 is inserted into the mold core 103, the sleeve 104 pushes the push rod 110 to move, and the push rod 110 pushes the push plate 1093 to move, and when the push plate 1093 drives the movable plate 109 to move, the first through groove 1032 and the second through groove 1091 are staggered, thereby increasing the influence of the temperature control chamber 1031 on the temperature of the sleeve 104; when removing the sleeve 104, press the second The push block 114 and the second push block 114 drive the third movable block 113 to move, and the latch tooth 1131 is inserted into the latch groove 1113, and the movable rod 112 is pulled upward, and the movable rod 112 drives the extension rod and the first movable block 107 to move upward together, and the first push block 1111 pushes the push rod 110 to move upward, and after the push rod 110 moves to one side of the groove 1041, the movable plate 109 moves under the action of gravity, and the push rod 110 enters the groove 1041, and the first through groove 1032 and the second through groove 1091 are staggered to close the temperature control chamber 1031 to prevent the residual temperature in the temperature control chamber 1031 from causing harm to the operator, and at the same time prevent impurities from entering the temperature control chamber 1031; after the first movable block 107 is raised, the sleeve 104 can be directly removed from the core 103 to complete the disassembly of the sleeve 104.

[0046] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned utility model concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) to form a technical solution.

Claims

1. A medium voltage cable conductor shielding mold, comprising an inner film sleeve and a mold core, wherein the inner film sleeve and the mold core are coaxially arranged, and a feed channel is left between the inner film sleeve and the mold core, characterized in that: The mold core is provided with a sleeve and a connecting block connected with the sleeve, and the side wall of the sleeve is the inner wall of the feed channel; the connecting block is provided with a first cavity, a plunger is provided at one end of the sleeve, and a slot for inserting the plunger is provided on the side wall of the first cavity; a first protrusion is provided at one end of the plunger, a first movable block is provided in the cavity, a slope corresponding to the plunger is provided at the bottom of the first movable block, a second protrusion is provided at the bottom of the slope, and an arc surface is provided on the second protrusion; a plurality of temperature control cavities are provided on the side wall of the mold core, the temperature control cavities are connected to each other, and a plurality of first through grooves are provided on the side wall of the temperature control cavity; a movable plate is provided in the temperature control cavity, a plurality of second through grooves corresponding to the first through grooves are provided on the movable plate, and the movable plate is slidably connected to the top of the temperature control cavity; a second cavity is provided on the connecting block, a first extension rod is provided on the movable plate, the first extension rod is inserted into the second cavity, a push plate is provided on the first extension rod, and a push rod is provided in the second cavity.

2. The medium voltage cable conductor shielding mold according to claim 1, characterized in that: A second movable block is disposed in the second cavity, a first push block is disposed on the second movable block, the first push block is located at the bottom of the push rod, and a groove is disposed on the end surface of the sleeve.

3. The medium voltage cable conductor shielding mold according to claim 2, characterized in that: The connecting block is provided with a third protrusion, the third protrusion is provided with a first movable groove, the first movable groove is provided with a movable rod and a first spring, the first spring connects the movable rod to the first movable groove, and the first movable block is connected to the movable rod through a first connecting rod.

4. The medium voltage cable conductor shielding mold according to claim 3, characterized in that: The second movable block is provided with a second extension rod, the top end of the second extension rod passes through the third protrusion, and the first connecting rod is located above the second extension rod; the first connecting rod is provided with a third movable block, the third movable block is provided with a locking tooth, and the second extension rod is provided with a locking groove corresponding to the locking tooth.

5. The medium voltage cable conductor shielding mold according to claim 4, characterized in that: The movable rod is provided with a second movable groove, the second movable groove is provided with a second push block and a second spring, the second spring connects the second push block to the second movable groove, and the second push block is connected to the third movable block through a second connecting rod.

Images