CN209534186U - A kind of pre- joint hot melt die sleeve of plastic tube and heat melting device - Google Patents

Abstract

The utility model relates to pipeline connecting device fields, it is intended to provide the pre- joint hot melt die sleeve of plastic tube and heat melting device of a kind of pipeline connection application, including convex or concave die body, mating with the inner surface of plastic tube or outer surface respectively, there is the die body conical surface extended to make thermal fusing surface；The conical surface is contacted with the surface of corresponding matched plastic tube but is not interference fitted.The utility model had not only cleaned up the oxide layer of tube surface, but also the thermofussion welding of subsequent interference fit is helped to pick up quality assurance effect by carrying out pre- hot melt processing to pipe in advance；By a large amount of practice have shown that, can be rapidly more guaranteed by the synchronous preheating of pipe and hot melt, the welding quality of pipe using the pre- joint hot melt die sleeve and heat melting device of the utility model.

Description

A kind of pre- joint hot melt die sleeve of plastic tube and heat melting device

Technical field

The utility model relates to pipeline connecting device fields, are a kind of plastic tubes of pipeline connection application more specifically Pre- joint hot melt die sleeve and heat melting device.

Background technique

Heat melting device hot melting way is mostly used to connect between the pipelines such as water pipe, conduit in construction and decoration field at present, letter Single quick and connection is firm.Hot-melt adhesive paste principle is that the mating surface of two plastic conduits is tightly attached on heating tool, by adding Then the mating surface of its hot surface or end face removes heating tool, the two tube fuse faces is fitted close and are leaned on up to melting Together and cooling is remained to, becomes the whole process of connection.Heat melting device is then by electrical heating method, by heating plate The plastic tube that heat transfer matches therewith to special joint hot melt die sleeve, reusable heat fusible pattern set hot melt, reaches hot melt effect, at present Heat melting device is in the majority in a handheld in the market.

It is known that many engineering successes are the quality of pipeline quality of connection with the key of failure, by largely welding Examine practice have shown that, pipeline be easiest to damage and leak position often in pipe joint part, therefore, sweat soldering quality Control play it is most important.Although worker's pipe before hot melt, which all requires, makees wiped clean work, many pipes are often It,, will be to below if these are not thoroughly removed phenomena such as all generally existing oxidation in surface, aging by preservation in 5,6 years The influence of reflow process quality causes hidden trouble, but removes these oxide layers at present and worker is relied on to carry out sand by hand with sand paper substantially It removes, quality and efficiency are all to be improved.

Utility model content

The purpose of the utility model is to overcome deficiencies in the prior art, provide a kind of for being convenient to clean tube surface Oxide layer and the pre- joint hot melt die sleeve of the plastic tube that sweat soldering quality can be improved and the heat melting device with pre- joint hot melt die sleeve.

To achieve the goals above, the offer technical solution of the utility model is as follows:

A kind of pre- joint hot melt die sleeve of plastic tube, including convex or concave die body, respectively with the inner surface of plastic tube or outside Surface is mating, and there is the die body conical surface extended to make thermal fusing surface；The conical surface is contacted with the surface of corresponding matched plastic tube But it is not interference fitted.

The conical surface outer end of the die body of the convex is small end as a further improvement of the utility model, is less than plastic tube Internal orifice dimension 0.5-2.5mm；Inner end is big end, is less than plastic tube internal orifice dimension 0.05-0.35mm；The conical surface of the die body of the concave Inner end is small end, is greater than the outer aperture 0.05-0.35mm of plastic tube；Outer end is big end, is greater than the outer aperture 0.5-2.5mm of plastic tube.

The open end of the conical surface is equipped with groove as a further improvement of the utility model, when being protruded into as plastic tube Guide surface.

The bottom of the die body is equipped with mounting hole as a further improvement of the utility model,.

As a further improvement of the utility model, in the die body peephole provided circumferentially about of the concave, for observing The insertion end position of plastic tube.

The peephole aperture is in 6mm-8mm as a further improvement of the utility model,.

The conical surface length is in 15mm-85mm as a further improvement of the utility model,.

The invention also discloses a kind of heat melting device including the pre- joint hot melt die sleeve of the plastic tube, the plastic tube preheating Fusible pattern set is installed along in the heating plate of the heat melting device with other joint hot melt die sleeves, and assembled arrangement as needed.

The utility model had not only cleaned up the oxide layer of tube surface, but also side by carrying out pre- hot melt processing to pipe in advance The thermofussion welding of subsequent interference fit is helped to pick up quality assurance effect；By a large amount of practice have shown that, using the preheating of the utility model Fusible pattern set and heat melting device, can be rapidly more guaranteed by the synchronous preheating of pipe and hot melt, the welding quality of pipe.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model convex die body.

Fig. 2 is the structural schematic diagram of the utility model concave die body.

Fig. 3 is the structural schematic diagram of the utility model heat melting device.

In figure: 1 conical surface, 2 grooves, 3 peepholes, 4 mounting holes, 5 heating plates, 6 joint hot melt die sleeves, 7 pre- joint hot melt die sleeves.

Specific embodiment

The technical solution of the utility model is described in more detail in the following with reference to the drawings and specific embodiments.

As shown in Figure 1, 2, the pre- joint hot melt die sleeve of the plastic tube of the utility model can be divided into convex mould (Fig. 1) and concave mould (figure 2) it, respectively corresponds mating with the inner surface of plastic tube or outer surface；I.e. convex type mould has the outwardly extending conical surface 1, with plastic tube Inner surface it is mating；Concave mold has the conical surface 1 to extend internally, mating with the outer surface of plastic tube；With traditional joint hot melt die sleeve The difference is that the utility model is a kind of pre- joint hot melt die sleeve, purpose is not to generate sweat soldering, therefore the conical surface 1 with pipe Only with the surface gentle touchdown of be inserted into matched plastic tube, interference fit is not generated, as long as hot melt removal tube surface Oxide layer, and prepare for formal sweat soldering in next step, preheating can guarantee the good quality of welding in advance.

The length of the conical surface 1 of the pre- joint hot melt die sleeve of the plastic tube of the utility model is between 15mm-85mm.For convex die body, 1 outer end of the conical surface is small end, is less than plastic tube internal orifice dimension 0.5-2.5mm；Inner end is big end, is less than plastic tube internal orifice dimension 0.05- 0.35mm；For concave die body, 1 inner end of the conical surface is small end, is greater than the outer aperture 0.05-0.35mm of plastic tube；Outer end is big end, Greater than aperture 0.5-2.5mm outside plastic tube.Groove 2, guidance when protruding into for plastic tube are provided at the open end of the conical surface 1 Guiding and positioning function is played in face；It is equipped with mounting hole 4 in the bottom of die body, for being mounted and fixed to heat melting device as shown in Figure 3 In heating plate.

Shown in Fig. 3 is heat melting device, the pre- joint hot melt die sleeve of the plastic tube of the utility model with other joint hot melt die sleeves together, according to Actual needs is combined arrangement, while being mounted in the heating plate of the heat melting device, and same heat melting device can synchronize progress in this way Plastic tube preheating and sweat soldering, working efficiency is very high, is convenient.Pre- joint hot melt die sleeve 7 is mounted on front, joint hot melt die sleeve in figure 6 are mounted on rear portion.

Shown in Fig. 2 is the concave die body of the utility model, is provided through 2,3 apertures in the circumference of die body and exists 6mm-8mm peephole 3, for observing the insertion end position of plastic tube.It can directly check whether pipe is inserted by range estimation in this way Enter in place, makees to confirm without needing to draw upper mark line in advance in pipe exposed junction as before, it is more convenient practical.

Finally, it should be noted that listed above is only a specific embodiment of the utility model.Obviously, this reality With it is novel can also there are many deformation, it is all done according to structure, feature and principle described in the concept of the patent of the utility model it is equivalent Or simple change, it is included in the protection scope of the utility model patent.Those skilled in the art can be practical from this All deformations that novel disclosure is directly exported or associated, are considered as the protection scope of the utility model.

Claims (8)

1. a kind of pre- joint hot melt die sleeve of plastic tube, including convex or concave die body, respectively with the inner surface of plastic tube or appearance Face is mating, which is characterized in that there is the die body conical surface (1) extended to make thermal fusing surface；The conical surface (1) and corresponding matched modeling The surface of expects pipe contacts but is not interference fitted.

2. the pre- joint hot melt die sleeve of plastic tube according to claim 1, which is characterized in that the conical surface (1) of the die body of the convex Outer end is small end, is less than plastic tube internal orifice dimension 0.5-2.5mm；Inner end is big end, is less than plastic tube internal orifice dimension 0.05-0.35mm； The conical surface (1) inner end of the die body of the concave is small end, is greater than the outer aperture 0.05-0.35mm of plastic tube；Outer end is big end, is greater than The outer aperture 0.5-2.5mm of plastic tube.

3. the pre- joint hot melt die sleeve of plastic tube according to claim 1, which is characterized in that the open end of the conical surface (1) is equipped with Groove (2), guide surface when being protruded into as plastic tube.

4. the pre- joint hot melt die sleeve of plastic tube according to claim 1, which is characterized in that the bottom of the die body is equipped with mounting hole (4)。

5. the pre- joint hot melt die sleeve of plastic tube according to claim 1, which is characterized in that set on the die body circumference of the concave Peephole (3) are set, for observing the insertion end position of plastic tube.

6. the pre- joint hot melt die sleeve of plastic tube according to claim 5, which is characterized in that peephole (3) aperture is in 6mm- 8mm。

7. the pre- joint hot melt die sleeve of plastic tube according to any one of claim 1 to 6, which is characterized in that the conical surface (1) is long Degree is in 15mm-85mm.

8. a kind of heat melting device including the pre- joint hot melt die sleeve of plastic tube described in claim 1, which is characterized in that the plastic tube preheating Fusible pattern set is installed along in the heating plate of the heat melting device with other joint hot melt die sleeves, and assembled arrangement as needed.