CN217252493U

CN217252493U - Metal pipe fitting forming device

Info

Publication number: CN217252493U
Application number: CN202221084921.7U
Authority: CN
Inventors: 白文平; 陈洪波; 戚大涛; 夏俊; 王飞
Original assignee: Jiangsu Xiangneng Science & Technology Development Co ltd
Current assignee: Jiangsu Xiangneng Science & Technology Development Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-23
Anticipated expiration: 2032-04-29

Abstract

The utility model provides a metal pipe fitting forming device, which comprises forming blocks, wherein the forming blocks are provided with molded surfaces for forging and pressing pipe fittings, at least two forming blocks are distributed at intervals along the circumferential direction, and the forming blocks slide to the inner side during working to enclose an inner cavity and a truncated cone-shaped outer wall, wherein the inner cavity and the truncated cone-shaped outer wall are in a shape of being in a shape of a finished pipe fitting; the inner cone sleeve is internally provided with a circular truncated cone hole tightly attached to the outer wall, the inner cone sleeve is arranged on the base in a vertically floating mode, and the inner cone sleeve is pressed downwards and extrudes the outer wall of the forming block inwards. The utility model discloses the hoop wall after the shaping pipe fitting diameter shrink warp is even, and the smooth no folded layer in surface, the processing quality is high.

Description

Metal pipe fitting forming device

Technical Field

The utility model belongs to the technical field of the metalworking, concretely relates to metal pipe fitting forming device.

Background

The prior art generally adopts a steel pipe directly to carry out an upper and lower die forming method, for example, patent documents such as publication numbers CN105689620B and CN209902019U and the like describe similar forming methods, and the upper and lower die forming method forms a folded layer or an irregular polygon on the surface of an inner diameter, and causes the defects of insufficient inner and outer diameter allowance, difficult inner diameter machining and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a metal pipe fitting forming device to reduce former material weight, compression molding internal diameter surface forms the problem of folded layer about solving.

A metal pipe fitting forming device comprises

The forming blocks are provided with molded surfaces for forging and pressing the pipe fitting, at least two forming blocks are distributed at intervals along the circumferential direction, and the forming blocks slide inwards to form an inner cavity which is shaped like the finished pipe fitting and an outer wall in a circular truncated cone shape in working;

the inner cone sleeve is internally provided with a circular truncated cone hole tightly attached to the outer wall, the inner cone sleeve is installed on the base in a vertically floating mode, and the inner cone sleeve is pressed downwards and extrudes the outer wall of the forming block towards the inner side.

Preferably, a mounting cavity is formed in the inner taper sleeve, a first inverted bolt is vertically mounted on the base, a first elastic part is sleeved on the first bolt, the tail part of the first bolt and the first elastic part are located in the mounting cavity, and the first elastic part is used for jacking the inner taper sleeve.

Preferably, the top of the inner taper sleeve is provided with a positioning hole communicated with the mounting cavity, the tail of the first bolt penetrates through the positioning hole when the inner taper sleeve descends, and the tail of the first bolt is a polished rod.

Preferably, a first groove is arranged on the base, and a disc spring is arranged in the first groove; the disc edge of the disc spring is upwarped and props against the inner taper sleeve.

Further, a second horizontal bolt is installed on the base and is in threaded connection with the forming block, a second elastic piece is sleeved on the bolt, and two ends of the second elastic piece are respectively abutted to a nut of the second bolt and a fixing piece.

Preferably, the base is provided with a second groove, the fixing piece is fixedly installed in the second groove, the fixing piece is provided with a guide hole for the second bolt to pass through, and the tail of the second bolt passes through the guide hole and then is in threaded connection with the forming block.

Preferably, the inner cavity comprises an upper cavity and a lower cavity which are in an inverted circular truncated cone shape, and the taper of the upper cavity is larger than that of the lower cavity.

Preferably, the top of the inner taper sleeve is fixedly connected with at least two compression columns, the tops of the compression columns are connected by a gland, and the inner taper sleeve is pressed down when the gland is pressed by a press.

Furthermore, horizontal centering blocks are further installed on at least two of the compression columns, a centering hole matched with the diameter of the pipe fitting is formed in the center of each centering block, the centering hole is coaxial with the center of the inner cavity, and the pipe fitting penetrates through the centering hole and then is inserted between the forming blocks.

The utility model has the advantages that:

the utility model provides a new pipe fitting shaping scheme, through the inclined plane cooperation of interior taper sleeve and shaping piece, make the shaping piece produce the slip of horizontal direction and enclose synthetic interior die cavity, guarantee that the pipe fitting is realized by a plurality of directions of hoop and is out of shape the undergauge of pipe fitting when radial compression molding, the pipe fitting diameter shrink out of shape back hoop wall even, and the surface is smooth does not have the folded layer.

The utility model discloses utilize the automatic upwards restoration of a pair of interior taper sleeve of spring, utilize the automatic outside restoration of two pairs of shaping pieces of spring, guaranteed machining efficiency.

The utility model discloses utilize centering block with pipe fitting automatic alignment interior die cavity, guaranteed the fashioned axial symmetry of product.

The utility model discloses can be with thin wall high strength metal pipe fitting through the shaping to special-shaped steel pipe of local fashioned method, raw and other materials weight reduces to about 7.5kg by a wide margin.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the present invention illustrating the formation of a pipe;

fig. 2 is a schematic view of the present invention in a partial sectional structure.

Labeled in the figure as: 1. a pipe fitting; 2. an inward contraction section; 3. a base; 4. forming a block; 5. an inner taper sleeve; 6. pressing the column; 7. centering blocks; 8. a gland; 9. a profile surface; 10. an upper chamber; 11. a lower cavity; 12. a mounting cavity; 13. positioning holes; 14. a first bolt; 15. a first elastic part; 16. a disc spring; 17. a second bolt; 18. a second elastic piece; 19. a fixing member; 20. centering holes; 21. a feeding hole; 22. and (6) perforating.

Detailed Description

The utility model provides a metal pipe fittings forming device for the special-shaped structure on the forging and pressing shaping high strength metal pipe fittings, as shown in figure 1, this embodiment uses the interior section 2 that contracts of 1 bottom shaping round platform type of pipe fittings as the example to explain, and interior section 2 that contracts can include upper segment and hypomere two parts, and the tapering of upper segment is greater than the tapering of hypomere, and 1 material of pipe fittings is the high-strength steel.

As shown in fig. 2, the metal pipe forming device mainly includes a base 3, a forming block 4, an inner taper sleeve 5, a compression column 6, a centering block 7, a pressing cover 8 and the like which are installed from bottom to top.

The plurality of forming blocks 4 can be horizontally slidably mounted on the base 3, and the embodiment takes six forming blocks as an example, but is not limited to six forming blocks. The six forming blocks 4 are uniformly distributed on the same circumference from six directions, and there are intervals between the forming blocks 4 in a free state. The inside wall of one-tenth briquetting 4 is for being used for forging and pressing the profile 9 of pipe fitting 1, and one-tenth briquetting 4 slides to the inboard when receiving the pressure of interior taper sleeve 5 and contracts and draw close, encloses the interior die cavity of synthetic and finished product pipe fitting inner contraction section profile modeling, utilizes this interior die cavity forging to form interior contraction section 2 of pipe fitting 1, and interior die cavity includes the last chamber 10 and the lower chamber 11 with the corresponding radius platform type of interior contraction section 2 structure. The forming blocks 4 are also combined to form the outer wall of a circular truncated cone shape when being contracted and closed.

The upper and lower floating type of the inner taper sleeve 5 is installed on the base 3, and the inner taper sleeve 5 is sleeved outside the forming block 4, a circular truncated cone hole is formed in the inner taper sleeve 5, the outer wall of the forming block 4 is tightly attached to the hole wall of the circular truncated cone hole, and the outer wall of the forming block 4 is extruded to the inner side when the inner taper sleeve 5 is pressed down, so that the forming block 4 is close to the inner side. The angle of the conical surface of the inner conical sleeve 5 matched with the outer wall of the forming block is designed to be 6-10 degrees, but is not limited to the angle.

The inner taper sleeve 5 is internally provided with a mounting cavity 12, the top of the inner taper sleeve 5 is provided with a positioning hole 13 communicated with the mounting cavity 12, an inverted bolt I14 is vertically mounted on the base 3, the nut of the bolt I14 is clamped in the base 3, the bolt I14 is sleeved with an elastic part I15, the tail part of the bolt I14 is a polished rod, the tail part of the polished rod is located in the mounting cavity 12, and when the inner taper sleeve 5 moves downwards, the tail part of the bolt I14 penetrates through the positioning hole 13, so that the bolt I14 cannot deflect. The upper end and the lower end of the first elastic part 15 are respectively abutted against the installation cavity 12 and the base 3, the first elastic part 15 can jack the inner taper sleeve 5 to enable the inner taper sleeve to automatically reset, and the first elastic part 15 can be a compression spring or other common elastic elements.

The base 3 is also provided with a first groove, and a disc spring 16 is arranged in the first groove; the disc edge of the disc spring 16 is upwarped, when the inner taper sleeve 5 presses the base 3, the disc spring 16 supports the inner taper sleeve 5, the inner taper sleeve is guaranteed to be pressed to the bottommost part and then smoothly ascends, and the forming block 4 is rapidly separated from the inner taper sleeve 5.

A plurality of groups of bolts I14 and elastic pieces I15 are arranged on the base 3 and the inner taper sleeve 5 along the circumferential direction, so that the stability of the forging and pressing resetting action is improved.

A plurality of (for example, but not limited to twelve) horizontal bolts two 17 are installed on the base 3 along the circumferential direction, the bolts two 17 are screwed on the forming block 4, an elastic member two 18 is sleeved outside the bolts two 17, the elastic member two 18 may be a compression spring or other conventional elastic elements, and both ends of the elastic member two 18 respectively abut against a nut of the bolts two 17 and a fixing member 19. Particularly, be equipped with groove two on base 3, mounting 19 welding or spiro union or bonding are equipped with the guiding hole that supplies second bolt 17 horizontal to pass on mounting 19 in groove two, and the spiro union is on shaping piece 4 after the guiding hole is passed to the afterbody of second bolt 17. When the forming block 4 slides inwards, the second bolt 17 is driven to slide together, the second elastic part 18 is extruded by the nut to store force, and when the pressure of the inner taper sleeve 5 on the forming block 4 disappears, the second elastic part 18 drives the forming block 4 to slide outwards to reset.

The top of the inner taper sleeve 5 is fixedly connected with at least two compression columns 6, the tops of the compression columns 6 are fixedly connected by a gland 8, and the gland 8 presses down the inner taper sleeve 5 under the pressure of a press.

Horizontal centering blocks 7 are further mounted on the at least two compression posts 6, centering holes 20 matched with the diameters of the pipe fittings 1 are formed in the centers of the centering blocks 7, the centering holes 20 are coaxial with the centers of the inner cavities, and the pipe fittings 1 penetrate through the centering holes 20 and then are inserted between the forming blocks 4. The centering block 7 can accurately feed the pipe fitting 1 between the forming blocks 4, and the precision and the efficiency of forging and forming are improved. In order to further improve the feeding efficiency, a feeding hole 21 is also provided in the centre of the gland 8, the diameter of the feeding hole 21 being much larger than the diameter of the pipe 1 and preferably also being coaxial with the centre of the inner cavity, facilitating the quick insertion of the pipe 1 from the feeding hole 21 into the centring hole 20.

The utility model discloses a theory of operation: the pipe fitting 1 heated at high temperature downwards passes through the centering hole 20 from the feeding hole 21 in the middle above the gland 8 and freely falls between the six forming blocks 4, the press presses the upper end face of the gland 8, the centering block 7, the gland 8, the compression post 6 and the inner taper sleeve 5 move downwards, the six forming blocks 4 slide relatively under the extrusion of the inner taper sleeve 5 and horizontally move towards the center of the pipe fitting 1 on the surface of the base 3, meanwhile, the pipe fitting 1 is locally extruded, so that the contact area of the pipe fitting 1 and the forming blocks 4 is shrunk and deformed until the inner taper sleeve 5 is stopped after contacting with the surface of the base 3, then the press moves upwards, the centering block 7, the gland 8, the compression post 6 and the inner taper sleeve 5 move upwards to the initial position under the elastic force of the butterfly spring and the first elastic part 15, meanwhile, the six forming blocks 4 move outwards to the initial position under the matching action of the second elastic part 18 and the second bolt 17, the diameter of the central areas of the six forming blocks 4 is increased, the tube 1 is removed.

When the length of the lower section of the inner contraction section required by the pipe fitting 1 is longer, multiple times of forging and pressing can be carried out, the through hole 22 is formed in the center of the base 3, after one-time forging and pressing is completed, the lower section formed in the previous step moves downwards into the through hole 22, and then the actions are repeated to forge and form the upper section of the inner contraction section 2 and the cylindrical section of the blank again until the pipe fitting 1 moves downwards and is formed to the target position.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal tube forming apparatus, comprising:

the forming blocks are provided with molded surfaces for forging and pressing the pipe fitting, at least two forming blocks are distributed at intervals along the circumferential direction, and the forming blocks slide inwards to form an inner cavity which is shaped by copying with the finished pipe fitting and an outer wall which is shaped by enclosing a circular truncated cone in work;

2. The metal pipe forming device according to claim 1, wherein a mounting cavity is formed in the inner taper sleeve, an inverted first bolt is vertically mounted on the base, a first elastic member is sleeved on the first bolt, a tail portion of the first bolt and the first elastic member are mounted in the mounting cavity, and the first elastic member abuts against the mounting cavity and the base and is used for jacking up the inner taper sleeve.

3. The metal pipe forming device according to claim 2, wherein a positioning hole communicating with the mounting cavity is formed in the top of the inner taper sleeve, the tail portion of the first bolt penetrates through the positioning hole when the inner taper sleeve descends, and the tail portion of the first bolt is a polished rod.

4. The metal pipe forming device of claim 1, wherein the base is provided with a first groove, and the first groove is internally provided with a disc spring; the disc edge of the disc spring is upwarped and props against the inner taper sleeve.

5. The metal pipe forming device as claimed in claim 1, wherein a second horizontal bolt is mounted on the base, the second bolt is screwed to the forming block, a second elastic member is sleeved on the second bolt, and two ends of the second elastic member are respectively abutted to a nut of the second bolt and a fixing member.

6. The metal pipe forming device according to claim 5, wherein a second groove is formed in the base, the fixing member is fixedly installed in the second groove, a guide hole for the second bolt to pass through is formed in the fixing member, and the tail portion of the second bolt is screwed to the forming block after passing through the guide hole.

7. The metal tube forming apparatus according to any one of claims 1 to 6, wherein the inner cavity comprises an upper cavity and a lower cavity of an inverted circular truncated cone shape, and a taper of the upper cavity is greater than a taper of the lower cavity.

8. The metal pipe fitting forming device according to any one of claims 1 to 6, wherein the top of the inner taper sleeve is fixedly connected with at least two compression posts, the top of the compression posts are connected by a gland, and the gland presses down the inner taper sleeve when being pressed by a press.

9. The metal pipe forming device according to claim 8, wherein at least two of the compression posts are further provided with horizontal centering blocks, a centering hole matched with the diameter of the pipe is formed in the center of each centering block, the centering hole is coaxial with the center of the inner cavity, and the pipe penetrates through the centering holes and then is inserted between the forming blocks.

10. A metal tube forming apparatus according to claim 9, wherein the gland has a central loading hole having a diameter larger than that of the tube and coaxial with the center of the inner cavity.