CN216658587U - Pattern kneading forming die for pipe orifice of bent pipe with two pipe diameters - Google Patents

Abstract

The utility model discloses a pinching and forming die for pipe orifices of bent pipes with two pipe diameters, belonging to the technical field of pinching and forming of pipe orifices of silencing pipes of automobile exhaust systems; the utility model is provided with an upper template, a lower template of which the surface is fixedly connected with a fixed plate group, and a fold pinching forming structure arranged in the fixed plate group; the fixed plate group is provided with a pleat pinching forming channel, the upper die plate is hoisted with a driving plate, and the driving plate can be inserted into the fixed plate group to drive a plurality of pleat pinching forming blocks arranged in the pleat pinching forming structure to displace; the two driving plates are symmetrically distributed at two ends of the pleat pinching forming block, so that the pleat pinching forming block can be used for pinching and forming two pipe fittings synchronously; the device also comprises two correction structures; the mould correcting structure comprises an upper mould correcting block fixedly connected with the upper mould plate and a lower mould correcting block fixedly connected with the lower mould plate, and the upper mould correcting block can be matched with the lower mould correcting block along with the displacement of the upper mould plate in a working state.

Description

Pattern kneading forming die for pipe orifice of bent pipe with two pipe diameters

Technical Field

The utility model relates to the technical field of pinching and forming of pipe orifices of silencing pipes of automobile exhaust systems, in particular to a pinching and forming die for pipe orifices of bent pipes with two pipe diameters.

Background

In urban environment, traffic noise is a pollution source with strongest radiation and most wide influence, in the noise of motor vehicles, exhaust noise is one of main noise sources, and an automobile exhaust system is provided with a silencing pipe, as shown in figure 1, the circumference of a pipe fitting is provided with a plurality of holes, and a pipe orifice is in a flower-pinching shape, so that the noise is reduced, and the noise conforms to the acoustic principle;

at present, when the noise damping pipe is processed, a forming die is needed to pinch the flower, the forming die mainly comprises an upper die and a lower die, the pipe is placed in the die during processing, and the flower pinching forming is completed in an extrusion mode through the die assembly of the upper die and the lower die, the processing of a single product can be completed only in the mode, the improvement of the production efficiency is not facilitated, in addition, the shape correcting processing is needed by a circle correcting die after the flower pinching forming of the pipe, so the size of the pleat pinching end of the pipe meets the drawing requirements, a circle correcting tool needs to be additionally added after the flower pinching forming, the tool development cost and the process are increased, and the cost waste is caused;

therefore, how to solve the problem that in the prior art, the mold forming can only complete the processing of a single product, which is not beneficial to improving the production efficiency, and the rounding tool is additionally arranged, which not only increases the cost and the working procedures, but also causes the cost waste, becomes an important technical problem that needs to be solved urgently by the technical staff in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a pipe orifice pinching and forming die for a bent pipe with two pipe diameters, the die can synchronously realize the pinching and forming of the pipe orifices with the two pipe diameters, the production efficiency is greatly improved, the die can be directly calibrated after the forming, the operation in sequence does not need to be changed, the die has multiple purposes, the working procedures are combined, the tool development cost is saved, and the production cost is saved.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model discloses a kneading flower forming die for pipe orifices of bent pipes with two pipe diameters, which comprises:

the forming die comprises an upper die plate, a lower die plate and a fold pinching forming structure, wherein the lower die plate is arranged at the lower part of the upper die plate, and the surface of the lower die plate is fixedly connected with a fixed plate group;

the fixed plate group is provided with a pleat pinching forming channel, the upper template is hung with a driving plate, and the driving plate can be inserted into the fixed plate group to drive a plurality of pleat pinching forming blocks arranged in the pleat pinching forming structure to move;

the two driving plates are symmetrically distributed at two ends of the pleat forming block, so that the pleat forming block can pleat and form two pipe fittings synchronously; also comprises

Two sizing structures;

the correction structure comprises an upper correction block fixedly connected on the upper template and a lower correction block fixedly connected on the lower template;

and in the working state, the upper correction block can be matched with the lower correction block along with the displacement of the upper template.

Further, the fold pinching forming channel is a circular through hole, and the fold pinching forming blocks are circumferentially and uniformly distributed outside the fold pinching forming channel and can be radially displaced towards the fold pinching forming channel.

Furthermore, an inverted V-shaped structure driving groove is formed in the lower surface of the driving plate.

Further, the fold pinching forming structure comprises a fold pinching forming block, a plurality of guide blocks for driving the fold pinching forming block to displace and a positioning plate in sliding connection with the fold pinching forming block;

the guide sliding block comprises an upper guide sliding block and a lower guide sliding block in sliding contact with the upper guide sliding block;

the side walls of the driving grooves are fixedly connected with the upper guide sliding blocks;

the positioning plate is positioned below the upper guide slide block and is provided with the lower guide slide block;

under the working state, the driving plate displaces downwards, and the upper guide sliding block drives the pleat pinching forming block and the lower guide sliding block to displace.

Furthermore, brackets are fixedly connected to two sides of the lower template, and at least one supporting block of a U-shaped structure is distributed on each bracket and used for supporting the pipe fitting.

Further, the bracket comprises a supporting plate, and a clamp is selectively and fixedly connected to the supporting plate through a supporting block and used for pressing the pipe fitting on the supporting block.

Further, the fixing plate group comprises two fixing plates and two side fixing plates;

two the fixed plate interval sets up, and two the fixed plate both ends all have through bolted connection the side fixed plate, the fixed plate has been seted up hold between the fingers fold shaping passageway, hold between the fingers fold shaping passageway circumference seted up quantity with hold between the fingers opening that fold shaping piece quantity matches.

Furthermore, the fixed plate also comprises two fixed plate split bodies, and the two fixed plate split bodies are a group of two and are symmetrically distributed on two sides of the fold pinching forming channel.

Furthermore, the upper part of the upper correction block is fixedly connected with a hanging plate, and the hanging plate is fixedly connected with the upper template.

Further, the guide structure comprises a guide sleeve and a guide pillar fixedly connected with the lower template;

the guide sleeve is connected with the guide pillar in a sliding mode, and the top end of the guide sleeve is fixedly connected with the upper die plate through a connecting block.

In the technical scheme, the forming die for pinching the flower at the pipe orifice of the elbow pipe with two pipe diameters has the beneficial effects that:

compared with the prior art, the pattern pinching forming die has the advantages that firstly, the upper die plate corresponds to two ends of the pleat pinching forming block through the two driving plates, so that both ends of the pleat pinching forming block can carry out pleat pinching forming on the pipe fitting, the pattern pinching forming of the pipe fittings with two pipe diameters can be finished through one-time die assembly, the production efficiency is improved, and the production cost is reduced;

and secondly, the mould is integrated with two calibration structures, each calibration structure comprises an upper calibration block and a lower calibration block, the upper calibration block is fixedly connected with the upper template, and the lower calibration block is fixedly connected with the lower template, so that the upper calibration block can be matched with the lower calibration block along with the displacement of the upper template, the pipe fitting is calibrated, sequence operation is not required, the mould has multiple purposes, the working procedures are combined, the tool development cost is saved, and the production cost is further saved.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view of a prior art tube structure;

FIG. 2 is an isometric view of a kneading flower forming die for pipe orifices of two pipe diameters of the elbow pipe disclosed by the utility model;

FIG. 3 is a top view of the forming mold for kneading flower at the pipe orifice of the elbow pipe with two pipe diameters;

FIG. 4 is an exploded view of the nozzle pattern-pinching forming mold for two kinds of pipe diameters of the elbow pipe disclosed by the utility model;

FIG. 5 is a schematic structural diagram of a pinching and forming structure of a pinching and forming die for a pipe orifice of a bent pipe with two pipe diameters.

Description of reference numerals:

10. mounting a template; 11. a drive plate; 111. a drive slot; 12. connecting blocks; 13. a guide sleeve; 14. a guide post;

20. a lower template; 21. a fixing plate; 211. pleating the forming channel; 22. a side fixing plate; 23. the fixing plate is split; 24. a support plate; 25. a support block; 26. clamping; 27. a support block;

30. and (3) kneading and forming a structure: 31. positioning a plate; 32. an upper guide slide block; 33. a lower guide slide block; 34. a pleat-pinching forming block;

40. calibrating the structure; 41. a calibration block is arranged; 42. a lower calibration block; 43. a hanger plate;

50. a pipe fitting.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

As shown in FIGS. 1-5;

utility model two kinds of pipe diameter return bend mouth of pipe hold between fingers colored forming die, include:

the forming die comprises an upper die plate 10, a lower die plate 20 which is arranged at the lower part of the upper die plate 10 and the surface of which is fixedly connected with a fixed plate group, and a fold pinching forming structure 30 which is arranged in the fixed plate group;

fixed plate group is formed with and holds between fingers fold shaping passageway 211, it is concrete, see that fig. 3 is shown, fixed plate group includes four fixed plates, two fixed plates 21 and two side fixing plates 22, two fixed plate 21 intervals set up, and there is side fixing plate 22 at two fixed plate 21 both ends all through bolted connection, fixed plate 21 and side fixing plate 22 surround and form the box structure of installing and holding between the fingers fold shaping structure 30, fixed plate 21 sets up the fold shaping passageway 211 of holding between the fingers of circular structure, it is greater than the 50 diameters of pipe fitting to hold between the fingers fold shaping passageway 211, it sets up quantity and holds between the fingers the opening that pleat shaping piece 34 quantity matches to hold between the fingers fold shaping passageway 211 circumference. The movement condition of the pleat pinching forming structure 30 can be observed conveniently through the gaps, as shown in fig. 1, the fixing plate 21 further comprises two fixing plate split bodies 23, and the two fixing plate split bodies 23 are symmetrically distributed on two sides of the pleat pinching forming channel 211 in a group;

the guide structure is connected in front of the upper template 10 and the lower template 20, the guide structure is uniformly distributed at two ends of the upper template 10, the guide structure comprises a guide sleeve 13 and a guide post 14 fixedly connected with the lower template 20, the guide sleeve 13 is slidably connected with the guide post 14, and the top end of the guide sleeve 13 is fixedly connected with the upper template 10 through a connecting block 12.

A driving plate 11 is hung on the lower surface of the upper template 10, and the driving plate 11 can be inserted into the fixed plate group to drive a plurality of pleat pinching forming blocks 34 arranged on the pleat pinching forming structure 30 to displace;

the two driving plates 11 are symmetrically distributed at two ends of the pleat pinching forming block 34, so that the two ends of the pleat pinching forming block 34 can carry out pleat pinching forming on the pipe fitting 50, one-step die assembly is realized to finish the flower pinching forming of the pipe fitting 50 with two pipe diameters, the production efficiency is further improved, and the production cost is reduced;

the mold is further integrated with two calibration structures 40, each calibration structure 40 comprises an upper calibration block 41 fixedly connected to the upper mold plate 10 and a lower calibration block 42 fixedly connected to the lower mold plate 20, specifically, the upper portion of the upper calibration block 41 is fixedly connected with a hanging plate 43, and the hanging plate 43 is fixedly connected with the upper mold plate 10. In the working state, the upper calibration block 41 can be matched with the lower calibration block 42 along with the displacement of the upper template 10. The pipe fitting 50 can be directly corrected in the die after being formed, the operation of sequence conversion is not needed, the die has multiple functions, the working procedures are combined, the tool development cost is saved, and the production cost is further saved;

preferably, the pleat forming channel 211 is a circular through hole, the diameter of the through hole is larger than that of the pipe 50, so as to be adapted to the pipe 50 with different diameters, and the plurality of pleat forming blocks 34 are circumferentially and uniformly distributed outside the pleat forming channel 211 and can be radially displaced towards the pleat forming channel 211. Specifically, the number of the pinching and forming blocks 34 in the present embodiment is four, and the number of the pinching and forming blocks 34 may be selected according to the number of the pinching petals of the pipe 50;

as shown in fig. 4;

preferably, the lower surface of the driving plate 11 is provided with an inverted V-shaped driving groove 111. The fold-pinching forming block 34 is driven to displace through the driving groove 111;

as shown in fig. 5;

preferably, the fold-pinching forming structure 30 includes four fold-pinching forming blocks 34 and a plurality of guide blocks for driving the fold-pinching forming blocks 34 to displace, and a positioning plate 31 slidably connected to the fold-pinching forming blocks 34;

specifically, the positioning plate 31 is slidably connected with the pleat pinching forming blocks 34 through the sliding grooves, the four pleat pinching forming blocks 34 are radially and circumferentially distributed outside the pleat pinching forming channel 211 in a radial manner by taking the pleat pinching forming channel 211 as a center, and the pleat pinching forming blocks 34 are displaced towards or away from the central line direction of the pleat pinching forming channel 211 when being displaced;

the guide slide block comprises an upper guide slide block 32 and a lower guide slide block 33 in sliding contact with the upper guide slide block 32;

the side walls of the driving grooves 111 are fixedly connected with upper guide sliding blocks 32;

a lower guide slide block 33 is arranged below the upper guide slide block 32 on the positioning plate 31;

in the operating state, the driving plate 11 is displaced downward, and the upper guide slider 32 drives the pleat forming block 34 and the lower guide slider 33 to be displaced. That is, when the driving plate 11 is displaced downward, the upper guide slider 32 drives the pleat forming blocks 34 to displace and also drives the lower guide slider 33 to displace, the lower guide slider 33 drives the two pleat forming blocks 34 at the lower part of the pleat forming structure 30 to displace, and thus the four pleat forming blocks 34 are displaced toward the center direction of the pleat forming channel 211, and the end portion of the tube 50 is shaped by pinching;

as shown in fig. 3;

preferably, brackets are fixedly connected to both sides of the lower template 20, and at least one support block 25 with a U-shaped structure is arranged on each bracket to support the pipe 50.

In the structure, brackets are uniformly arranged on two sides of the lower template 20 corresponding to the lower parts of the pipe fittings 50, and the brackets bear the pipe fittings 50 through the support blocks 25 with U-shaped structures, so that the stability of the pipe fittings 50 in the process of pattern kneading forming and shape correction is improved;

as shown in fig. 4;

preferably, the bracket includes a retainer plate 24, and a clamp 26 is selectively attached to the retainer plate 24 by a support block 27 for compressing the tubular 50 against the retainer block 25. Specifically, a clamp 26 is arranged on the supporting plate 24 corresponding to the pinching and forming position of the pipe 50, the clamp 26 is a quick clamp in the prior art, and the pipe 50 is pressed on the supporting block 25 through the clamp 26;

in the technical scheme, the utility model provides a pattern pinching forming die for the pipe orifice of the elbow pipe with two pipe diameters;

working principle;

referring to fig. 3, two pipes 50 with pinching patterns are respectively placed on the support blocks 25 at two sides of the upper die plate 10 and corresponding to the positions of the pinching forming channels 211, the end portions of the pipes 50 extend into the pinching forming channels 211, and the pipes 50 are pressed on the support blocks 25 through the clamps 26;

the upper template 10 is connected with an external driving device, is driven by the driving device to move downwards, is matched with the lower template 20, and an upper guide slide block 3, a lower guide slide block 33 and a pleat kneading forming block 34 of the pleat kneading forming structure 30 are linked with a driving plate 11 of the upper template 10 to finish the flower kneading forming;

after the pattern pinching molding is finished, the upper template 10 moves upwards, the mold is opened, the clamp 26 is loosened, the pipe 50 is taken out, and the pipe 5 after the pattern pinching molding is placed on the lower calibration block 42 and the support block 25 at the side part of the corresponding lower calibration block 42; driving the upper template 10 to move downwards and mold through driving equipment to complete a circle calibration process;

after the rounding process is finished, opening the die, and taking out the pipe 50, thereby finishing two processes of kneading and shaping and rounding through a set of dies;

compared with the prior art, the pattern pinching forming die has the advantages that firstly, the upper die plate corresponds to two ends of the pleat pinching forming block through the two driving plates, so that the two ends of the pleat pinching forming block can carry out pleat pinching forming on the pipe fitting, one-step die assembly is realized, the pattern pinching forming of the pipe fitting with two pipe diameters is finished, the production efficiency is improved, the production cost is reduced, secondly, the die is further integrated with two correcting structures, each correcting structure comprises an upper correcting block and a lower correcting block, the upper correcting block is fixedly connected with the upper die plate, the lower correcting block is fixedly connected with the lower die plate, the upper correcting block can follow the displacement of the upper die plate to be matched with the lower correcting block, the pipe fitting is corrected, sequence operation is not needed, one die has multiple purposes, the processes are combined, the tool development cost is saved, and the production cost is further saved.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.

Claims (10)

1. Flower forming die is held between fingers to two kinds of pipe diameters return bend mouth of pipe, include:

the forming die comprises an upper die plate (10), a lower die plate (20) and a fold pinching forming structure (30), wherein the surface of the lower die plate is fixedly connected with a fixed plate group;

the fixed plate group is provided with a pleat pinching forming channel (211), the upper template (10) is hung with a driving plate (11), and the driving plate (11) can be inserted into the fixed plate group to drive a plurality of pleat pinching forming blocks (34) arranged on the pleat pinching forming structure (30) to move;

the driving plate (11) comprises two pieces which are symmetrically distributed at two ends of the pleating forming block (34), so that the pleating forming block (34) can simultaneously pleat and form two pipe pieces (50); also comprises

Two sizing structures (40);

the correction structure (40) comprises an upper correction block (41) fixedly connected to the upper template (10) and a lower correction block (42) fixedly connected to the lower template (20);

in the working state, the upper calibration block (41) can move along with the upper template (10) and is matched with the lower calibration block (42).

2. The two-caliber elbow pipe orifice pinching forming die according to claim 1, wherein;

the fold pinching forming channel (211) is a circular through hole, and the fold pinching forming blocks (34) are circumferentially and uniformly distributed outside the fold pinching forming channel (211) and can be radially displaced towards the fold pinching forming channel (211).

3. The two-caliber elbow pipe orifice pinching forming die according to claim 2, wherein;

the lower surface of the driving plate (11) is provided with an inverted V-shaped driving groove (111).

4. The two-caliber elbow pipe orifice pinching forming die according to claim 3, wherein;

the fold pinching forming structure (30) comprises a fold pinching forming block (34) and a plurality of guide blocks for driving the fold pinching forming block (34) to displace, and a positioning plate (31) which is connected with the fold pinching forming block (34) in a sliding way;

the guide sliding block comprises an upper guide sliding block (32) and a lower guide sliding block (33) in sliding contact with the upper guide sliding block (32);

the side walls of the driving grooves (111) are fixedly connected with the upper guide sliding blocks (32);

the lower guide sliding block (33) is arranged below the upper guide sliding block (32) of the positioning plate (31);

under the working state, the driving plate (11) is displaced downwards, and the upper guide sliding block (32) drives the pleat forming block (34) and the lower guide sliding block (33) to be displaced.

5. The two-caliber elbow pipe orifice knurling forming die as claimed in claim 1, wherein;

the lower die plate is characterized in that brackets are fixedly connected to two sides of the lower die plate (20), and at least one supporting block (25) of a U-shaped structure is distributed on each bracket and used for supporting the pipe fitting (50).

6. The two-caliber elbow pipe orifice pinching forming die as claimed in claim 5, wherein;

the bracket comprises a supporting plate (24), and a clamp (26) is selectively fixedly connected to the supporting plate (24) through a supporting block (27) and used for pressing the pipe (50) on the supporting block (25).

7. The two-caliber elbow pipe orifice pinching forming die according to claim 1, wherein;

the fixed plate group comprises two fixed plates (21) and two side fixed plates (22);

two fixed plate (21) interval sets up, and two fixed plate (21) both ends all have through bolted connection side fixed plate (22), fixed plate (21) have been seted up hold between the fingers fold shaping passageway (211), hold between the fingers fold shaping passageway (211) circumference seted up quantity with hold between the fingers the opening that fold shaping piece (34) quantity matches.

8. The two-caliber elbow nozzle pinching forming die as claimed in claim 7, wherein;

the fixing plate (21) further comprises two fixing plate split bodies (23), and the two fixing plate split bodies (23) are symmetrically distributed on two sides of the fold pinching forming channel (211) in a group.

9. The two-caliber elbow pipe orifice pinching forming die according to claim 1, wherein;

and the upper part of the upper calibrating block (41) is fixedly connected with a hanging plate (43), and the hanging plate (43) is fixedly connected with the upper template (10).

10. The two-caliber elbow pipe orifice pinching forming die according to claim 1, wherein;

the guide structure comprises a guide sleeve (13) and a guide post (14) fixedly connected with the lower template (20);

the guide sleeve (13) is connected with the guide post (14) in a sliding mode, and the top end of the guide sleeve (13) is fixedly connected with the upper die plate (10) through a connecting block (12).

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