CN111468581A

CN111468581A - Forming device for hose elbow

Info

Publication number: CN111468581A
Application number: CN202010349144.3A
Authority: CN
Inventors: 王林秋
Original assignee: Yuhuan Baishide Copper Co ltd
Current assignee: Yuhuan Baishide Copper Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-07-31

Abstract

The invention provides a forming device of a hose elbow, and belongs to the technical field of machinery. It has solved the limited problem of bulge loop intensity that current processing mode obtained. This forming device of hose elbow, which comprises a die, lateral wall department in the mould has the concave ring form draw-in groove that is, forming device still includes terrace die one, the top of mould has the protruding annular protruding edge that is that makes progress, the downside of terrace die one has the concave annular recess one that is, protruding edge is provided with elastic component one in stretching into recess one and between the bottom of protruding edge top and recess one, the top of mould still has concave shaping hole one, can support when the elasticity that elastic component one was overcome moves down and form one between the shaping hole one of top surface and terrace die one and the top surface of mould, the draw-in groove, the cavity, terrace die one and the equal coaxial line setting of shaping hole one. This forming device of hose elbow has the advantage that machining efficiency is high.

Description

Forming device for hose elbow

Technical Field

The invention belongs to the technical field of machinery, relates to a forming device, and particularly relates to a forming device for a hose elbow.

Background

The hose elbow is mainly applied to the fields of air conditioners and the like and comprises a tubular pipe body, wherein the side wall of one end of the pipe body is provided with a plurality of convex rings which are arranged at intervals and protrude outwards. The existing hose elbow is generally formed by adopting two processing modes of die casting and red punching, but the die casting forming mode easily causes air holes in a casting, and a workpiece obtained by the red punching mode is easy to crack.

For this purpose, the applicant designs a molding process of a hose elbow core and applies for Chinese patent (application number: 200810120721.0; granted publication number: CN101362177B), and the process comprises the following steps: a. preparing materials; b. processing a convex ring; c. bending the pipe body; d. and (5) forming a flange. Wherein, a plurality of convex rings are processed one by one in the step b by adopting a radial rolling way, and the method has the advantages of material saving and reliable quality.

However, because the convex ring of the hose elbow is only formed in a rolling manner in a protruding manner, the strength of the processed convex ring is insufficient, and the use requirements of all occasions are difficult to meet.

Disclosure of Invention

The invention aims to provide a forming device of a hose elbow, aiming at the problems in the prior art, and solving the problem that the strength of a convex ring obtained by the existing processing mode is limited.

The purpose of the invention can be realized by the following technical scheme:

a forming device for a hose elbow comprises a die with a cylindrical cavity inside, wherein the cavity is vertically arranged, the upper end of the cavity is located on the top surface of the die, a concave circular clamping groove is formed in the side wall of the cavity in the die, the forming device is characterized by further comprising a first circular male die, the inner diameter of the first male die is the same as the diameter of the cavity, the first male die is arranged above the cavity, a convex edge protruding upwards and circular is arranged at the top of the die, a concave circular groove I is formed in the lower side surface of the first male die, the convex edge extends into the groove I, a circular elastic piece I is arranged between the top of the convex edge and the bottom of the groove I, the top of the die is further provided with a concave forming hole I, the first male die moves upwards under the elastic action of the elastic piece I and enables a lower side surface of the male die to form a gap with the top surface of the die, when the first male die overcomes the elasticity of the first elastic part and moves downwards, the first male die can abut against the top surface of the die and the lower side surface of the first male die and the first forming hole of the die form a first forming cavity, and the clamping groove, the cavity, the first male die and the first forming hole are all arranged coaxially.

Before this forming device of hose elbow processes the pipe fitting, at first two convex bulge loops of mode processing shaping such as roll extrusion are passed through to the lateral part of pipe fitting one end, then with the vertical cavity of placing of pipe fitting after this processing to make a bulge loop card of shaping go into the draw-in groove, another bulge loop is located the shaping hole one at mould top. And then, the punch head impacts downwards from top to bottom, and the first male die moves to the lower side surface of the first male die to abut against the top surface of the die against the elastic force of the first elastic part. In this in-process, the bulge loop in the shaping hole one receives the extrusion deformation of terrace die one, and axial dimension diminishes, and the structure is compacter, and intensity is higher, and the inner wall of pipe fitting receives leaning on of drift outer wall and can't take place deformation to the inboard, and the outer wall of pipe fitting receives blockking of the inner wall of cavity inner wall and terrace die one, also can not take place deformation, then receives the in-process of impact at the pipe fitting, only can take place the bulge loop in the position of shaping chamber one and be extruded deformation and lifting strength. In the forming process, the high-strength convex ring can be formed only by one-time stamping, the processing is convenient, and the processing efficiency is high.

In foretell forming device of hose elbow, forming device still includes and is the annular terrace die two of circle, the internal diameter of terrace die two is the same with the internal diameter of terrace die one and both coaxial line set up, the upside of terrace die one has the convex annular bulge that is that makes progress, the downside of terrace die two has the concave annular recess two that is that makes progress, the bulge stretches into in the recess two and be provided with elastic component two between the top of bulge and the bottom of recess two, the top of terrace die one inboard has concave shaping hole two, terrace die two overcomes and to lean on when the elastic force effect of elastic component two moves down and form shaping chamber two between side of going up of terrace die one and terrace die two and the shaping hole two of terrace die one. The second male die is additionally arranged above the first male die, the second forming cavity is formed between the first male die and the second male die, so that after the three convex rings are formed in the pipe fitting machining mode and placed in the pipe fitting machining mode, the two convex rings can be simultaneously extruded in the first forming cavity and the second forming cavity through one-step punching of the punch, the strength is improved, and the machining efficiency is high.

In the above forming device for the hose elbow, the inner side of the second male die is further provided with a concave cylindrical cavity, the cavity is vertically arranged, and the upper end of the cavity is located on the top surface of the second male die. Through the arrangement of the concave cavity, when in stamping, the upper end of the pipe fitting is directly stamped to form a flaring part, the flaring processing is completed, and the processing efficiency is further improved.

In the above-mentioned molding apparatus for hose elbows, the elastic member comprises a spring tube.

As another case, in the above-described molding apparatus for a hose elbow, the elastic member includes a rubber ring made of a rubber material.

In the above forming device for the hose elbow, the mold includes a first mold body and a second mold body that are symmetrically arranged, one opposite sides of the first mold body and the second mold body are respectively provided with a concave portion, and the sides of the first mold body and the second mold body, which are provided with the concave portions, are mutually fastened to form the cavity, the clamping groove and the first forming hole.

Compared with the prior art, the forming device of the hose elbow can respectively place the convex rings with larger axial sizes between the first male die and the die and between the first male die and the second male die through the arrangement of the first elastic part and the second elastic part, and extrude the axial sizes of the two convex rings through the punching of the punch at one time, so that the strength of the two convex rings is enhanced, and the processing efficiency is higher.

Drawings

Fig. 1 is a schematic structural view of the present hose bend molding apparatus.

Fig. 2 is an exploded view of the present hose bend forming apparatus.

In the figure, 1, a cavity; 2. a mold; 3. a card slot; 4. a first male die; 5. a convex edge; 6. a first groove; 7. a first elastic part; 8. forming a first forming hole; 9. a male die II; 10. a projection; 11. a second groove; 12. a second elastic piece; 13. a second molding hole; 14. a concave cavity; 15. and (4) punching.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the device for forming a hose bend comprises a die 2 having a cylindrical cavity 1 therein, and a first punch 4 and a second punch 9 both having a circular ring shape. Wherein, cavity 1 vertical setting and upper end are located the top surface of mould 2, and the lateral wall department that is located cavity 1 in the mould 2 has the concave draw-in groove 3 that is the ring form. The inner diameter of the first male die 4, the inner diameter of the second male die 9 and the diameter of the cavity 1 are the same and are coaxially arranged.

The top of the die 2 is provided with a convex edge 5 which protrudes upwards and is in a circular ring shape, the lower side surface of the convex die 4 is provided with a concave circular groove 6, the convex edge 5 extends into the groove 6, and a circular elastic part 7 is arranged between the top of the convex edge 5 and the bottom of the groove 6. The top of the die 2 is also provided with a first concave cylindrical forming hole 8, the first forming hole 8 is arranged coaxially with the cavity 1, and the diameter of the first forming hole 8 is larger than that of the cavity 1. And a space is formed between the lower side surface of the first male die 4 and the top surface of the die 2 under the action of the elastic force of the elastic piece 7, when the first male die 4 moves downwards against the elastic force of the elastic piece 7, the first male die can abut against the top surface of the die 2, and a first forming cavity is formed between the lower side surface of the first male die 4 and a first forming hole 8 of the die 2.

The upper side of the male die 4 is also provided with a convex part 10 which is convex upwards and is in a circular ring shape, the position of the convex part 10 is opposite to that of the groove I6, the lower side of the male die 9 is provided with a groove II 11 which is concave upwards and is in a circular ring shape, the convex part 10 extends into the groove II 11, and an elastic part II 12 is arranged between the top of the convex part 10 and the bottom of the groove II 11. The top of the inner side of the first male die 4 is also provided with a concave cylindrical forming hole II 13, the second male die 9 can abut against the upper side surface of the first male die 4 when moving downwards against the elastic action of the second elastic piece 12, and a forming cavity II is formed between the second male die 9 and the forming hole II 13 of the first male die 4. The inner side of the second male die 9 is also provided with a concave cylindrical cavity 14, and the cavity 14 is vertically arranged and the upper end of the cavity is positioned on the top surface of the second male die 9.

In this embodiment, the elastic member includes a spring tube, but may be replaced with other structures having elastic characteristics such as a rubber ring made of a rubber material, if necessary. The die 2 comprises a first die body and a second die body which are symmetrically arranged, wherein one opposite sides of the first die body and the second die body are respectively provided with a concave part, and one sides of the first die body and the second die body, which are provided with the concave parts, are mutually buckled to form a cavity 1, a clamping groove 3 and a forming hole 8.

Before this forming device of hose elbow processes the pipe fitting, at first three convex bulge loops of lateral part machine-shaping of pipe fitting one end, then with the vertical cavity 1 of placing of pipe fitting after this processing to make the bulge loop card of fashioned lowest position go into draw-in groove 3, two higher bulge loops in position are located respectively in shaping hole one 8 of mould 2 and shaping hole two 13 of terrace die one 4, and two bulge loops stretch out from shaping hole one 8 and shaping hole two 13 upper end opening respectively. Then, the punch 15 impacts downwards from top to bottom, the first male die 4 and the second male die 9 move downwards to the lower side surface of the first male die 4 to abut against the top surface of the die 2 and the lower side surface of the second male die 9 to abut against the first male die 4 respectively under the action of the elastic force of the first elastic piece 7 and the second spring. In the process, the two convex rings are axially compressed and deformed, become more compact and have higher strength. And the inner wall of pipe fitting receives supporting of 15 outer walls of drift and can not take place deformation to the inboard, and the outer wall of pipe fitting receives blockking of the inner wall of cavity 1 inner wall, terrace die one 4 and terrace die two 9, can not take place deformation. In the forming process, the strength of the two convex rings can be enhanced only by one-time stamping, the processing is convenient, and the processing efficiency is high.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The forming device of the hose elbow comprises a die (2) with a cylindrical cavity (1) inside, wherein the cavity (1) is vertically arranged, the upper end of the cavity (1) is located on the top surface of the die (2), a concave circular clamping groove (3) is formed in the position, located in the cavity (1), of the side wall of the die (2), and is characterized by further comprising a circular male die (4), the inner diameter of the male die (4) is equal to the diameter of the cavity (1) and is arranged above the cavity (1), a convex edge (5) protruding upwards and circular in shape is formed in the top of the die (2), a concave circular groove (6) is formed in the lower side surface of the male die (4), the convex edge (5) extends into the groove (6), and a circular elastic piece (7) is arranged between the top of the convex edge (5) and the bottom of the groove (6), the top of mould (2) still has recessed shaping hole (8), terrace die (4) move up under the spring action of elastic component (7) and make terrace die (4) downside with form the interval between the top surface of mould (2), can support when terrace die (4) overcome the elasticity of elastic component (7) and move down and lean on the top surface of mould (2) just the downside of terrace die (4) with form between shaping hole (8) of mould (2) and become one the shaping chamber, draw-in groove (3), cavity (1), terrace die (4) and the equal coaxial line setting of shaping hole (8).

2. The forming device of the hose elbow according to the claim 1, characterized in that the forming device also comprises a second annular male die (9), the inner diameter of the second male die (9) is the same as that of the first male die (4) and the two are arranged coaxially, the upper side of the male die I (4) is provided with an upwards-protruding annular protruding part (10), the lower side of the male die II (9) is provided with a groove II (11) which is concave upwards and is in a circular ring shape, the convex part (10) extends into the second groove (11), an elastic part II (12) is arranged between the top of the convex part (10) and the bottom of the second groove (11), the top of the inner side of the male die I (4) is provided with a concave forming hole II (13), and the second male die (9) can abut against the upper side surface of the first male die (4) when moving downwards against the elastic force of the second elastic part (12), and a second forming cavity is formed between the second male die (9) and the second forming hole (13) of the first male die (4).

3. A hose bend forming device according to claim 2, characterized in that the inner side of the second male die (9) is provided with a recessed cylindrical cavity (14), the cavity (14) is vertically arranged, and the upper end of the cavity is positioned on the top surface of the second male die (9).

4. A hose elbow forming device according to claim 1, 2 or 3, wherein the resilient member comprises a sprung tube.

5. A hose elbow forming device according to claim 1, 2 or 3, wherein the resilient member comprises a rubber ring of rubber material.

6. The forming device of the hose elbow as claimed in claim 1, 2 or 3, wherein the mold (2) comprises a first mold body and a second mold body which are symmetrically arranged, the opposite sides of the first mold body and the second mold body are respectively provided with a concave part, and the sides of the first mold body and the second mold body which are provided with the concave parts are mutually buckled to form the cavity (1), the clamping groove (3) and the first forming hole (8).