CN217968378U

CN217968378U - Expansion device for PVC pipe connection

Info

Publication number: CN217968378U
Application number: CN202221837122.2U
Authority: CN
Inventors: 张业林
Original assignee: Jiangsu Lidong Pipe Technology Co ltd
Current assignee: Jiangsu Lidong Pipe Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-12-06
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses an expansion device is used in PVC union coupling, including hot plate and casing, the surface of casing is provided with the hot plate, the hot plate sets up to the arc structure, just the internally mounted of hot plate has the heating wire. The utility model discloses a traction assembly cooperates with spacing subassembly jointly, can drive the distance between two sets of hot plates and increase under drive assembly's effect, and then adapt to not unidimensional PVC pipe, the inside battery of battery compartment supplies power to the inside heating wire of hot plate, and then can expand PVC pipe through the heat assistance that the heating wire produced, threaded rod among the drive assembly can drive the spring through the baffle when rotating simultaneously and be compressed, elasticity through the spring increases the friction between threaded rod and the casing, and then make the rotation of handle more and more difficult, thereby be convenient for realize the accurate of distance between two sets of hot plates and adjust.

Description

Expansion device for PVC pipe connection

Technical Field

The utility model relates to a PVC manages technical field, specifically is a PVC expansion device for union coupling.

Background

PVC pipe principal ingredients is polyvinyl chloride, and add other compositions and strengthen its heat resistance, toughness, a material of ductility, the PVC pipe mostly converges the expanding unit and expands the one end of PVC pipe when connecting, but the diameter of the unable accurate adjustment expansion of present expanding unit is big, and then lead to very easily because of the too big damaged or the expansion degree undersize of PVC pipe that leads to leading to being difficult to be applicable to the PVC pipe of various sizes can not reach the present of expansion, thereby the holistic practicality has been reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an expanding unit is used in PVC union coupling carries out the accurate PVC pipe that adjusts and adapt to not unidimensional through keeping off ring, spring, holding chamber, drive assembly, spacing subassembly and traction assembly cooperation to the distance between two sets of hot plates to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an expansion device for PVC pipe connection comprises a heating plate and a shell, wherein the surface of the shell is provided with the heating plate, the heating plate is of an arc structure, an electric heating wire is arranged in the heating plate, and a traction assembly and a limiting assembly are arranged between the heating plate and the shell;

the traction assembly comprises a first traction block, a first connecting plate, a first rotating seat, a first connecting rod and a first sliding groove, the first connecting plate is arranged inside the shell, the first traction block is integrally formed on the side wall of the first connecting plate, the first sliding groove is formed in the surface of the shell, the first traction block extends to the outside through the first sliding groove, the surface of the shell and the inner wall of the heating plate are fixedly connected with the first rotating seat, the first rotating seat and the first connecting rod are connected in a rotating mode, and the first traction block is in contact with the first connecting rod.

Preferably, spacing subassembly includes that the second pulls piece, second connecting plate, second and rotates seat, second connecting rod and second spout, the inside of casing is provided with the second connecting plate, the lateral wall integrated into one piece of second connecting plate has the second to pull the piece, the second spout has been seted up on the surface of casing, the second pulls the piece and extends to the external world through the second spout, just the surface of casing has the second with the inner wall rigid coupling of hot plate and rotates the seat, and is two sets of rotate between the seat and be connected with the second connecting rod the second, the second pulls the piece and contacts with the second connecting rod.

Preferably, be provided with drive assembly between casing, first connecting plate and the second connecting plate, drive assembly includes threaded rod and handle, the one end of threaded rod is rotated and is connected in the surface of first connecting plate, just the other end of threaded rod runs through in proper order in the inside of second connecting plate and casing and extend to the external world, just be threaded connection between threaded rod and the casing, the handle is installed to the other end of threaded rod.

Preferably, the fixed surface of threaded rod installs the sleeve, the bearing is installed to the junction of sleeve and second connecting plate, just telescopic skin weld has the spacing ring, the spacing ring laminating is in the surface of second connecting plate.

Preferably, the inside of casing has been seted up and has been held the chamber, the internally mounted who holds the chamber has the spring, the fixed surface of threaded rod installs the baffle, just the one end rigid coupling of spring is on the surface of baffle.

Preferably, the surface integrated into one piece of casing has the battery compartment, the internally mounted of battery compartment has the battery, just the battery compartment links to each other with the heating wire, the torsional spring that is used for reseing is all installed with the junction of first rotation seat, the junction that the seat was rotated to second connecting rod and second to the head rod.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a traction assembly cooperates with spacing subassembly jointly, can drive the distance between two sets of hot plates and increase under drive assembly's effect, and then adapt to not unidimensional PVC pipe, the inside battery of battery compartment supplies power to the inside heating wire of hot plate, and then can expand PVC pipe through the heat assistance that the heating wire produced, threaded rod among the drive assembly can drive the spring through the baffle when rotating simultaneously and be compressed, elasticity through the spring increases the friction between threaded rod and the casing, and then make the rotation of handle more and more difficult, thereby be convenient for realize the accurate of distance between two sets of hot plates and adjust.

Drawings

FIG. 1 is a schematic view of the connection structure between the housing and the heating plate of the present invention;

FIG. 2 is a schematic view of a connection structure of a second connecting plate and a threaded rod according to the present invention;

fig. 3 is a schematic view of the main structure of the heating plate of the present invention.

In the figure: 1. heating plates; 2. a first traction block; 3. a first connecting plate; 4. a housing; 5. a first rotating base; 6. a first connecting rod; 7. a first chute; 8. a second rotating base; 9. a second connecting rod; 10. a battery compartment; 11. a handle; 12. a threaded rod; 13. a spring; 14. an accommodating chamber; 15. a baffle plate; 16. a second chute; 17. a second connecting plate; 18. a second traction block; 19. a limiting ring; 20. a bearing; 21. a sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: an expansion device for PVC pipe connection comprises a heating plate 1 and a shell 4;

the heating plate 1 is arranged on the surface of the shell 4, the heating plate 1 is of an arc-shaped structure, the heating wire is arranged in the heating plate 1, and a traction assembly and a limiting assembly are arranged between the heating plate 1 and the shell 4;

the traction assembly comprises a first traction block 2, a first connecting plate 3, first rotating seats 5, first connecting rods 6 and first sliding grooves 7, the first connecting plate 3 is arranged inside a shell 4, the first traction block 2 is integrally formed on the side wall of the first connecting plate 3, the first sliding grooves 7 are formed in the surface of the shell 4, the first traction block 2 extends to the outside through the first sliding grooves 7, the first rotating seats 5 are fixedly connected to the surface of the shell 4 and the inner wall of the heating plate 1, the first connecting rods 6 are rotatably connected between the two groups of first rotating seats 5, and the first traction block 2 is in contact with the first connecting rods 6;

as an optimized scheme of the utility model, spacing subassembly includes second traction block 18, second connecting plate 17, second rotation seat 8, second connecting rod 9 and second spout 16, the inside of casing 4 is provided with second connecting plate 17, the lateral wall integrated into one piece of second connecting plate 17 has second traction block 18, second spout 16 has been seted up on the surface of casing 4, second traction block 18 extends to the external world through second spout 16, and the surface of casing 4 and the inner wall rigid coupling of hot plate 1 have second rotation seat 8, it is connected with second connecting rod 9 to rotate between two sets of second rotation seats 8, second traction block 18 contacts with second connecting rod 9, can drive hot plate 1 with traction block synchronization through spacing subassembly's setting, and then prevent that hot plate 1 can't keep the parallel between 4 with casing when moving;

as an optimized scheme of the utility model, a driving assembly is arranged between the shell 4 and the first and second connecting

plates

3 and 17, the driving assembly comprises a threaded rod 12 and a handle 11, one end of the threaded rod 12 is rotatably connected to the surface of the first connecting plate 3, the other end of the threaded rod 12 sequentially penetrates through the interiors of the second connecting plate 17 and the shell 4 and extends to the outside, the threaded rod 12 is in threaded connection with the shell 4, the handle 11 is arranged at the other end of the threaded rod 12, the first and second connecting

plates

3 and 17 can be simultaneously driven through the driving assembly, and further the adjustment of the distance between the two groups of heating plates 1 is realized;

as an optimized scheme of the utility model, a sleeve 21 is fixedly installed on the surface of the threaded rod 12, a bearing 20 is installed at the joint of the sleeve 21 and the second connecting plate 17, a limiting ring 19 is welded on the surface of the sleeve 21, the limiting ring 19 is attached to the surface of the second connecting plate 17, the threaded rod 12 can rotate inside the bearing 20 through the sleeve 21 when rotating, and the connection between the sleeve 21 and the first connecting plate 3 is limited and fixed through the limiting ring 19;

as an optimized scheme of the utility model, the inside of the housing 4 is provided with a containing cavity 14, the inside of the containing cavity 14 is provided with a spring 13, the surface of the threaded rod 12 is fixedly provided with a baffle 15, and one end of the spring 13 is fixedly connected to the surface of the baffle 15, the threaded rod 12 can compress the spring 13 inside the cavity through the baffle 15 when moving, so that the elasticity of the spring 13 increases the friction between the threaded rod 12 and the housing 4, so as to realize the fine rotation of the handle 11, thereby realizing the accurate adjustment of the distance between the two groups of heating plates 1 to adapt to the PVC pipes with different sizes;

as a preferred embodiment of the present invention, casing 4's surperficial integrated into one piece has battery compartment 10, battery compartment 10's internally mounted has the battery, and battery compartment 10 links to each other with the heating wire, head rod 6 and the first junction of rotating seat 5, the torsional spring that is used for reseing is all installed with the second junction of rotating seat 8 to second connecting rod 9, the setting of torsional spring can drive hot plate 1 and reset in step after first traction block 2 and the second traction block 18 resets, thereby can realize reducing of distance between two sets of hot plates 1.

During the use, stretch into PVC intraduct with two sets of hot plates 1, then make its production of heat to the heating wire power supply of hot plate 1 inside through the inside battery of battery compartment 10, rotate handle 11, it rotates to drive threaded rod 12 through handle 11, threaded rod 12 can be at the inside rectilinear movement of casing 4 when rotating, threaded rod 12 can drive first connecting plate 3 and second connecting plate 17 synchronous motion when moving, can drive first traction block 2 respectively when first connecting plate 3 and second connecting plate 17 move, second traction block 18 is at the inside removal of second spout 16, and then make first traction block 2 and second traction block 18 can drive first connecting rod 6 and second connecting rod 9 respectively and take place to rotate, thereby it drives the distance increase between two sets of hot plates 1 through first roating seat 5 and second roating seat 8, make hot plate 1 laminate in the inside of PVC pipe, then whole rotation casing 4, make hot plate 1 can expand the PVC pipe with rotatory mode, threaded rod 12 can pass through baffle 15 when moving the inside of cavity to the spring 13 and then make the hot plate 13 realize the accurate adjustment of the spring of the handle 13 and the not rotation of the accurate adjustment of spring of the hot plate 11 with the rotation, thereby it comes to realize the accurate adjustment size of the same group of PVC pipe.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a PVC expansion device for union coupling, includes hot plate (1) and casing (4), its characterized in that: the heating plate (1) is arranged on the surface of the shell (4), the heating plate (1) is of an arc-shaped structure, an electric heating wire is arranged in the heating plate (1), and a traction assembly and a limiting assembly are arranged between the heating plate (1) and the shell (4);

the traction assembly comprises a first traction block (2), a first connecting plate (3), a first rotating seat (5), a first connecting rod (6) and a first sliding groove (7), the first connecting plate (3) is arranged inside the shell (4), the first traction block (2) is integrally formed on the side wall of the first connecting plate (3), the first sliding groove (7) is formed in the surface of the shell (4), the first traction block (2) extends to the outside through the first sliding groove (7), the surface of the shell (4) is fixedly connected with the inner wall of the heating plate (1) through the first rotating seat (5) and is two in set, the first rotating seat (5) is connected with the first connecting rod (6) in a rotating mode, and the first traction block (2) is in contact with the first connecting rod (6).

2. The PVC pipe connection expansion device of claim 1, wherein: spacing subassembly includes that second traction block (18), second connecting plate (17), second rotate seat (8), second connecting rod (9) and second spout (16), the inside of casing (4) is provided with second connecting plate (17), the lateral wall integrated into one piece of second connecting plate (17) has second traction block (18), second spout (16) have been seted up on the surface of casing (4), second traction block (18) extend to the external world through second spout (16), just the surface of casing (4) has the second to rotate seat (8) with the inner wall rigid coupling of hot plate (1), and is two sets of it is connected with second connecting rod (9) to rotate between seat (8) to rotate the second, second traction block (18) contact with second connecting rod (9).

3. The PVC pipe connection expansion device of claim 2, wherein: be provided with drive assembly between casing (4), first connecting plate (3) and second connecting plate (17), drive assembly includes threaded rod (12) and handle (11), the one end of threaded rod (12) is rotated and is connected in the surface of first connecting plate (3), just the other end of threaded rod (12) runs through in proper order in the inside of second connecting plate (17) and casing (4) and extends to the external world, just be threaded connection between threaded rod (12) and casing (4), handle (11) are installed to the other end of threaded rod (12).

4. An expansion device for PVC pipe connection according to claim 3, characterized in that: the fixed surface of threaded rod (12) installs sleeve (21), bearing (20) are installed to the junction of sleeve (21) and second connecting plate (17), just the skin weld of sleeve (21) has spacing ring (19), spacing ring (19) laminating in the surface of second connecting plate (17).

5. The PVC pipe connection expansion device of claim 4, wherein: the inside of casing (4) has been seted up and has been held chamber (14), the internally mounted who holds chamber (14) has spring (13), the fixed surface of threaded rod (12) installs baffle (15), just the one end rigid coupling of spring (13) is on the surface of baffle (15).

6. The PVC pipe connection stent according to any one of claims 1 to 5, wherein: the surperficial integrated into one piece of casing (4) has battery compartment (10), the internally mounted of battery compartment (10) has the battery, just battery compartment (10) link to each other with the heating wire, the torsional spring that is used for reseing is all installed with the junction of first rotation seat (5) in head rod (6) and the junction of second rotation seat (8) in second connecting rod (9).