CN210362557U

CN210362557U - Pneumatic expander for assembling cold-shrinkage power cable accessories

Info

Publication number: CN210362557U
Application number: CN201921183584.5U
Authority: CN
Inventors: 文浩; 文明义
Original assignee: Sichuan Taiyi High Tech Materials Co Ltd
Current assignee: Sichuan Taiyi High Tech Materials Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-21
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a cold contraction power cable annex pneumatic expander for assembly, locate the expansion mould on the workstation including workstation and slip, the last perpendicular to surface of workstation is equipped with the backup pad, is equipped with first through-hole in the backup pad, and the inner wall of first through-hole is coaxial to be equipped with flexible fabric cover, and flexible fabric sheathes in and is equipped with the expansion mouth along its axial, and flexible fabric cover is kept away from the one end of first through-hole is connected with the traction lever, and the one end that the expansion mould was kept away from to the backup pad is equipped with the fixed station, and the coaxial second through-hole that is the step form that is equipped with in the fixed station all is equipped with clamping rod in the clamping rod, and clamping rod's outside cover is equipped with clamping spring, clamping spring. The utility model discloses an expander has made things convenient for cold contraction type cable accessories's fixed through setting up the fixed station, guarantees that the dynamics of fixing at every turn is the same, has avoided causing the damage to cold contraction type cable accessories surface, helps alleviateing workman's intensity of labour.

Description

Pneumatic expander for assembling cold-shrinkage power cable accessories

Technical Field

The utility model relates to a cable accessories processing technology field, in particular to cold shrinkage power cable accessories pneumatic expander for assembly.

Background

The cold-shrinkable power cable accessory is also named as cold-shrinkable tube, and is formed by injecting and vulcanizing elastomer material in a factory, expanding and lining with plastic spiral supports (support tubes) to form various cable accessories.

Publication No. 202572299U, which discloses a cold shrink cable accessory expander, a cable cold shrink intermediate joint, a cold shrink insulation tube, and a cold shrink termination. Although the cold shrink tube can be assembled, the assembling process is complicated. The working process comprises the following steps: "will turn over the free end of wearing the guide bar earlier and penetrate inside the shrinkage cable accessories, make the shrinkage cable accessories along the direction removal of turning over wearing the guide bar towards the flexible fabric cover, it is inconsistent with the fixing base to be close to the one end of fixing base to the shrinkage cable accessories, at this moment, be close to one section flexible fabric cover of fixing base and lie in the shrinkage cable accessories completely inside, unnecessary partial flexible fabric cover is stretched out by the shrinkage cable accessories. Then start hydraulic cylinder through the operation panel, make hydraulic cylinder's telescopic link move towards the one end of flexible fabric cover, hydraulic cylinder's telescopic link promotes the expansion mould through the connecting rod and also moves towards the one end of flexible fabric cover, and at this moment, the slide rail of expansion mould below can play the effect of support and direction to the expansion mould, avoids the expansion mould incline. Before the expansion mould reaches the fixed seat by the conical head close to one end of the flexible fabric sleeve, the air is filled into the inflating nozzle on the expansion mould through the air pump, the air enters the gap between the outer walls of the double-layer structure of the expansion mould through the inflating nozzle, and the air is sprayed out through the air holes on the outer walls of the expansion mould. When the conical surface of the conical head completely enters the interior of the flexible fabric sleeve through the die hole on the fixed seat, the cold-shrinkage cable accessory positioned outside the flexible fabric sleeve is expanded by the conical head; wherein, because the shrinkage cable accessories is inconsistent with the fixing base, in the real operation, when the conical head gets into flexible fabric cover inside through the nib and expands, need artifical manual fixed to the shrinkage cable accessories always, stretch out flexible fabric cover until the conical head, otherwise the conical head will promote the shrinkage cable accessories, make the shrinkage cable accessories along with conical head simultaneous movement, finally lead to the conical head can not get into the inside expansion to it of shrinkage cable accessories. The manual fixation has the following defects that the surface of the cold-contraction cable accessory can be damaged due to different manual fixation forces, and the manual labor intensity is high, so that the burden of workers is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a cold contraction power cable annex pneumatic expander for assembly, make things convenient for cold contraction type cable annex's fixed, guarantee that the dynamics of fixing at every turn is the same, avoid causing the damage to cold contraction type cable annex surface, help alleviateing workman's intensity of labour.

The purpose of the utility model is realized through the following technical scheme: a pneumatic expander for assembling a cold-contraction power cable accessory comprises a workbench and an expansion die arranged on the workbench in a sliding manner, wherein a supporting plate is vertically arranged on the upper surface of the workbench, a first through hole used for the expansion die to penetrate is formed in the supporting plate, a flexible fabric sleeve used for enabling the expansion die to penetrate is coaxially arranged on the inner wall of the first through hole, an expansion port is formed in the flexible fabric sleeve along the axial direction of the flexible fabric sleeve, one end, far away from the first through hole, of the flexible fabric sleeve is connected with a traction rod, one end, far away from the expansion die, of the supporting plate is provided with a fixing table, a second through hole in a step shape is coaxially arranged in the fixing table, the small-diameter end of the second through hole is the same as the diameter of the first through hole and is communicated with the first through hole, a plurality of clamping through holes are uniformly distributed on the wall of the large-diameter end of the, the clamping spring is sleeved outside the clamping rods, two ends of the clamping spring are fixedly connected with the inner wall of the second through hole and the clamping rods respectively, and the diameter of the circumference of one end, away from the inner wall of the second through hole, of each clamping rod is larger than that of the cold-shrink tube.

Furthermore, the end part of the clamping rod is provided with an arc-shaped rubber block.

Furthermore, the positioning device comprises a positioning assembly, wherein the positioning assembly comprises two positioning plates, two distance limiting plates in an L shape, two fastening plates and a connecting plate, the two positioning plates are vertically arranged, one ends, opposite to the two positioning plates, of the two positioning plates are respectively connected with one ends of the two distance limiting plates, the other ends of the two distance limiting plates are oppositely arranged, the opposite ends of the two distance limiting plates are respectively connected with one ends of the two fastening plates, the other ends of the two fastening plates are respectively arranged towards the two positioning plates, and the ends, far away from the distance limiting plates, of the fastening plates are connected through the connecting plate.

Furthermore, one ends, far away from the distance limiting plate, of the two fastening plates are obliquely arranged towards the two positioning plates respectively.

Further, one side that the connecting plate kept away from the locating plate be equipped with the bracelet.

The utility model has the advantages that:

1) the utility model discloses an expander has made things convenient for cold contraction type cable accessories's fixed through setting up the fixed station, guarantees that the dynamics of fixing at every turn is the same, has avoided causing the damage to cold contraction type cable accessories surface, helps alleviateing workman's intensity of labour.

2) The positioning assembly can avoid manually judging the amount of the supporting tube fed into the expansion die, so that the accuracy of the assembled workpiece is higher.

Drawings

FIG. 1 is a schematic view of the overall structure of a pneumatic expander for assembling a cold-shrink power cable accessory according to the present invention;

FIG. 2 is a schematic diagram of a specific structure of the worktable;

FIG. 3 is a schematic structural view of a positioning assembly;

FIG. 4 is a state diagram of the positioning assembly in use;

in the figure, 1 — the table; 2-expanding the mould; 3-a support plate; 4-a flexible fabric sleeve; 5, a draw bar; 6-a fixed table; 7-a second via; 8-clamping the through hole; 9-clamping the rod; 10-a clamping spring; 11-a rubber block; 12-a positioning plate; 13-a distance limiting plate; 14-a fastening plate; 15-a connecting plate; 16-hand ring; 17-a cylinder; 18-a support tube; 19-a positioning assembly.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a pneumatic expander for assembling a cold-contraction power cable accessory comprises a workbench 1 and an expansion die 2 arranged on the workbench 1 in a sliding manner, wherein a supporting plate 3 is vertically arranged on the upper surface of the workbench 1, a first through hole for the expansion die 2 to pass through is formed in the supporting plate 3, a flexible fabric sleeve 4 for the expansion die 2 to penetrate through is coaxially arranged on the inner wall of the first through hole, an expansion port is formed in the flexible fabric sleeve 4 along the axial direction of the flexible fabric sleeve, a draw bar 5 is connected to one end, away from the first through hole, of the flexible fabric sleeve 4, a fixing table 6 is arranged at one end, away from the expansion die 2, of the supporting plate 3, a second through hole 7 in a step shape is coaxially arranged in the fixing table 6, the small-diameter end of the second through hole 7 is the same as the first through hole in diameter and is communicated with the first through hole, and a plurality of clamping through holes 8 are uniformly distributed on the hole wall of the, clamping rods 9 are coaxially arranged in the clamping through holes 8, clamping springs 10 are sleeved outside the clamping rods 9, two ends of each clamping spring 10 are fixedly connected with the inner wall of the corresponding second through hole 7 and the corresponding clamping rod 9, and the diameter of the circumference of one end, away from the inner wall of the corresponding second through hole 7, of each clamping rod 9 is larger than that of the corresponding cold shrinkage pipe and smaller than that of the corresponding first through hole.

Wherein, the expansion mould 2 is driven by the cylinder 17 to realize reciprocating motion, and the one end of the expansion mould 2 far away from the cylinder 17 is provided with a conical head. The structure of the expansion die 2, the connection mode of the expansion die 2 and the cylinder 17, and the connection mode of the expansion die 2 and the conical head are all the prior art, and are not described herein again.

The working principle is as follows: firstly, the cold-shrinkable cable accessory is penetrated into the draw bar 5, and is wrapped outside the flexible fabric sleeve 4 through the draw bar 5, and one end of the cold-shrinkable cable accessory close to the support plate 3 is tightly attached to the support plate 3. Then, the air cylinder 17 is started, so that the air cylinder 17 drives the expansion die 2 to move towards the direction of the supporting plate 3. When the conical head moves to the first through hole, the cold-shrinkable cable accessory is manually positioned by hand. In the process that the conical head enters the cold-shrinkable cable accessory, the conical head firstly enters the cold-shrinkable cable accessory to expand the same, the clamping rod 9 is extruded to compress the clamping spring 10, and the reaction force of the clamping spring 10 acts on the conical head and the cold-shrinkable cable accessory through the clamping rod 9. When the conical head is fully inserted, the clamping rod 9 acts on the expansion die 2 and on the cold-shrinkable cable accessory, which is now positioned under the action of the clamping spring 10 and the clamping rod 9. The worker can release his hand and prepare for the next process.

The utility model discloses an expander has made things convenient for cold contraction type cable accessories's fixed through setting up fixed station 6, guarantees that the dynamics of fixing at every turn is the same, has avoided causing the damage to cold contraction type cable accessories surface, helps alleviateing workman's intensity of labour.

Further, the end of the clamping rod 9 is provided with an arc-shaped rubber block 11. The friction between the arranged rubber block 11 and the cold-shrinkable cable accessory is larger, the positioning of the cold-shrinkable cable accessory is facilitated, and the cold-shrinkable cable accessory can be better prevented from moving along with the conical head in a synchronous mode.

Furthermore, the positioning device further comprises a positioning assembly 19, wherein the positioning assembly 19 comprises two positioning plates 12, two L-shaped distance limiting plates 13, two fastening plates 14 and a connecting plate 15, the two positioning plates 12 are vertically arranged, one ends, opposite to the two positioning plates 12, are respectively connected with one ends of the two distance limiting plates 13, the other ends of the two distance limiting plates 13 are oppositely arranged, the opposite ends of the two distance limiting plates 13 are respectively connected with one ends of the two fastening plates 14, the other ends of the two fastening plates 14 are respectively arranged towards the two positioning plates 12, and one ends, far away from the distance limiting plates 13, of the two fastening plates 14 are connected through the connecting plate 15.

When the cold shrinkable cable accessory is completely expanded on the expansion die 2 and the conical head extends out of the cold shrinkable cable accessory, the next process is performed. The next step is to feed the support tube 18 into the expansion die 2, and this step is to transfer the cold shrinkable cable accessory on the expansion die 2 to the support tube 18 to complete the assembly when the cylinder 17 drives the expansion die 2 to move in the reverse direction. The process is required to ensure that the transferred cold shrinkable cable accessory is uniformly coated on the support tube 18, i.e. the uncoated portions of the two ends of the support tube 18 are the same. A manual determination of the amount of the support tube 18 fed into the expansion die 2 is therefore avoided by the positioning assembly 19.

The connecting plate 15 and the fastening plate 14 are extended into the supporting tube 18, the end face of the supporting tube 18 is tightly attached to the inner side face of the opposite end of the distance limiting plate 13, the horizontal section of the distance limiting plate 13 is the required allowance, and when the distance limiting plate is sent into the supporting tube 18, the supporting tube 18 is sent to the positioning plate 12, and then the next procedure can be started. The positioning plate 12 is arranged to avoid excessive feeding, and when the feeding amount reaches the required allowance, the positioning plate 12 is tightly attached to the end face of the supporting die. After the whole assembly is finished, the positioning assembly 19 is removed, and the assembly of the next workpiece can be started repeatedly.

Further, one ends of the two fastening plates 14 far away from the distance limiting plate 13 are respectively arranged in an inclined manner towards the two positioning plates 12. The fastening plate 14 is made of elastic material, so that the inclined fastening plate 14 can be directly clamped on the inner wall of the supporting tube 18 under the action of self elasticity, and the use is convenient.

Further, a bracelet 16 is arranged on one side of the connecting plate 15 away from the positioning plate 12. Connecting plate 15 is made by elastic material, pulling bracelet 16, and connecting plate 15 elastic bending consequently stimulates two mounting plate 14 and moves in opposite directions, so alright loosen mounting plate 14, makes things convenient for taking out of locating component 19.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. Pneumatic expander is used in equipment of shrinkage power cable annex, locate the expansion mould on the workstation including workstation and slip, the last perpendicular to surface of workstation is equipped with the backup pad, be equipped with the first through-hole that is used for expanding the mould to pass in the backup pad, the coaxial flexible fabric cover that is used for making the expansion mould to penetrate that is equipped with of inner wall of first through-hole, flexible fabric sheathes in and is equipped with the expansion mouth along its axial, flexible fabric cover keeps away from the one end of first through-hole is connected with traction lever, its characterized in that: the one end that the expansion mould was kept away from to the backup pad is equipped with the fixed station, coaxial being equipped with is step-like second through-hole in the fixed station, the minor diameter end of second through-hole with first through-hole diameter is the same and communicate each other, the pore wall of the big diameter end of second through-hole has a plurality of tight through-holes of clamp along its circumference equipartition, all coaxial being equipped with clamping bar in the tight through-hole of clamp, clamping bar's outside cover is equipped with clamping spring, clamping spring's both ends respectively with the inner wall and the clamping bar fixed connection of second through-hole, many the diameter that the circumference that the one end place of second through-hole inner wall was kept away from to clamping bar is greater than the diameter of cold shrink pipe and is less than the diameter of.

2. The pneumatic expander for cold-shrink power cable accessory assembly according to claim 1, wherein: the end part of the clamping rod is provided with an arc-shaped rubber block.

3. The pneumatic expander for cold-shrink power cable accessory assembly according to claim 1, wherein: still include locating component, locating component includes two locating plates, two range plates that are "L" font, two mounting plates and a connecting plate, two the vertical setting of locating plate, and two relative one ends of locating plate link to each other with the one end of two range plates respectively, two the other end of range plates sets up relatively, two the looks remote site of range plates respectively with two the one end of mounting plate links to each other, and the other end of two mounting plates sets up towards two locating plates respectively, and two the one end that the range plate was kept away from to the mounting plate links to each other through the connecting plate.

4. The pneumatic expander for cold-shrink power cable accessory assembly according to claim 3, wherein: and one ends of the two fastening plates, which are far away from the distance limiting plate, are obliquely arranged towards the two positioning plates respectively.

5. The pneumatic expander for cold shrink power cable accessory assembly according to claim 4, wherein: one side of the connecting plate, which is far away from the positioning plate, is provided with a bracelet.