CN212733814U

CN212733814U - Necking die

Info

Publication number: CN212733814U
Application number: CN202021040128.8U
Authority: CN
Inventors: 潘欢
Original assignee: Setford Changshu Refrigeration Equipment Co ltd
Current assignee: Thetford Changshu Motorhome Parts Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-03-19
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a throat mould belongs to the mould field, including the throat mould, the inside fixed mounting in throat mould center has the die cavity, the inside fixed mounting of die cavity lower extreme has the slot, the inside cartridge of slot has the inserted block, the inside fixed mounting in the inserted block left and right sides has thread groove A, the inside fixed mounting in the slot left and right sides has thread groove B, the inside rotation of thread groove A and thread groove B has the bolt, bolt outer end fixed mounting has the knob, inserted block upper end fixed mounting has the step, step upper end fixed mounting has the thimble. Through setting up rotating-structure, embedded structure and heating device, the practicality of mould has been improved.

Description

Necking die

Technical Field

The utility model relates to the technical field of mold, especially, relate to a throat mould.

Background

In the production process of the pipe, the pipe is often processed by a mold to achieve the expected production effect, and the used molds are various, wherein a necking mold is one of the molds.

Patent CN201610385264.2 discloses a pipe end necking die, which is used for necking a pipe end by deformation, and the main force is from the impact force to a driving wedge, so that a very large force is required to impact the driving wedge; if manual impact is used, the labor is wasted; if a machine is used for impact, special corresponding equipment is needed, resources are wasted, the shaft rod can be led into the hole of the pipe, and the hole of the pipe is prevented from being compressed and deformed when the pipe is reduced; meanwhile, the screw rod part of the shaft lever can be matched with the clamping head, so that the clamping head can be close to the end part of the pipe to act on the end part of the pipe; the polished rod portion of axostylus axostyle and the bell mouth mating reaction of clamping head when the axostylus axostyle rotates, carry out the throat to the tubular product, the simple operation is laborsaving.

The necking die has the following defects: 1. above-mentioned throat mould is carrying out the throat to tubular product and makes can not guarantee that tubular product is inside too shrink, leads to tubular product to indent flat, causes the damage of tubular product, has reduced the practicality of mould, and above-mentioned throat mould is not convenient for fix firmly leading to the tubular product throat irregularly with the mould when carrying out the throat to tubular product, needs to process repeatedly. 2. The mould does not have a heating effect when the pipe is processed, the plasticity effect of the pipe is not obvious in a cooling state, the processing process is difficult, and the practicability of the mould is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a necking die, which aims to adopt an embedded fixing structure and a jacking device, when necking a pipe, firstly, an insert block is downwards aligned and inserted into a slot, leading an Oncao A and a screw groove B to be aligned, inwards rotating a bolt, leading the outer wall of the bolt to be cut with screw threads to be matched with the screw threads on the inner walls of the screw groove A and the screw groove B, leading the bolt to rotate inwards and enter in the screw groove A and the screw groove B, leading the insert block to be fixed inside the slot, leading a step and a thimble to be arranged inside a die groove, downwards inserting the slot into the die groove, leading the thimble to be inserted into the pipe, leading the diameter of the pipe to be reduced along with the reduction of the diameter of the die groove, leading the pipe to deform inwards and contract the diameter under the extrusion of the inner wall of the die groove, leading the thimble inside the pipe to outwards press the pipe, avoiding the excessive inwards extrusion of the pipe, leading the one-time forming of the, when the mould is produced according to the needs, the thickness of the step is adjusted, so that the depth of the pipe inserted into the mould cavity is different, the length of the necking is changed, and the practicability of the mould is improved.

Through heating device, when inserting tubular product downwards into the die cavity and carrying out necking processing, will heat the external power supply ohmic heating of iron wire switch-on, the heat distributes in inner lateral wall fixed mounting's the fluting die cavity, heats tubular product, makes the plasticity of tubular product more obvious, is convenient for to the necking extrusion processing of tubular product, has improved the effect of processing.

The utility model provides a specific technical scheme as follows:

the utility model provides a pair of necking die includes necking die, the inside fixed mounting in necking die center has the die cavity, the inside fixed mounting of die cavity lower extreme has the slot, the inside cartridge of slot has the inserted block, the inside fixed mounting of inserted block left and right sides has spiral shell groove A, the inside fixed mounting of slot left and right sides has spiral shell groove B, spiral shell groove A and the inside bolt that rotates of spiral shell groove B have, bolt outer end fixed mounting has the knob, inserted block upper end fixed mounting has the step, step upper end fixed mounting has the thimble, the cartridge has tubular product between thimble and the die cavity, the inside fixed mounting of necking die left and right sides has the fixed column, the inside fixed mounting of fixed column has the heating iron wire, the inner lateral wall fixed mounting of fixed column has the fluting.

Optionally, the outer wall of the bolt is cut with threads, and the inner walls of the thread groove a and the thread groove B are cut with threads matched with the threads of the outer wall of the bolt to form a rotating structure.

Optionally, seven groups of the slots are fixedly arranged and uniformly distributed.

Optionally, the size of the thimble is matched with the inner size of the pipe.

Optionally, the input of heating iron wire passes through the wire with external power supply constitution and is connected.

The utility model has the advantages as follows:

1. the embodiment of the utility model provides a necking die, through embedded fixed knot structure and shoring device, when carrying out necking processing to the tubular product, at first aim at the inserted block downwards and inject in the slot, make Europe grass A and thread groove B align, inwards rotate the bolt, the bolt outer wall is cut with the screw thread and thread fit with thread groove A and thread groove B inner wall, make the bolt rotate inwards in thread groove A and thread groove B and enter, make the inserted block fix in the slot inside, thus make step and thimble arrange inside the die cavity, inject the slot downwards into the die cavity, make the thimble inject inside the tubular product, with the bore of the die cavity reduces, the tube cavity warp to the inside bore of necking under the inner wall extrusion of the die cavity, and the thimble inside the tubular product outwards supports the pressure tubular product and has avoided the tubular product excessive inwards extrusion, thereby make the tubular product one-time shaping, the efficiency of tubular product processing has been improved, if need make the length of tubular product different, when the mould is produced according to the needs, the thickness of the step is adjusted, so that the depth of the pipe inserted into the mould cavity is different, the length of the necking is changed, and the practicability of the mould is improved.

2. Through heating device, when inserting tubular product downwards into the die cavity and carrying out necking processing, will heat the external power supply ohmic heating of iron wire switch-on, the heat distributes in inner lateral wall fixed mounting's the fluting die cavity, heats tubular product, makes the plasticity of tubular product more obvious, is convenient for to the necking extrusion processing of tubular product, has improved the effect of processing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic front sectional view of a necking die according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a partially enlarged structure a in fig. 1 of a necking die according to an embodiment of the present invention.

In the figure: 1. necking die; 2. a die cavity; 3. a slot; 4. inserting a block; 5. a thread groove A; 6. a thread groove B; 7. a bolt; 8. turning a knob; 9. a step; 10. a thimble; 11. a pipe; 12. fixing a column; 13. heating the iron wire; 14. and (4) slotting.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, 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 efforts belong to the protection scope of the present invention.

A necking die according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 2.

Referring to fig. 1 and 2, the embodiment of the utility model provides a throat mould includes throat mould 1, the inside fixed mounting in throat mould 1 center has die cavity 2, the inside fixed mounting of 2 lower extremes in die cavity has slot 3, the inside cartridge of slot 3 has inserted block 4, the inside fixed mounting of 4 left and right sides of inserted block has spiral groove A5, the inside fixed mounting of 3 left and right sides of slot has spiral groove B6, spiral groove A5 and spiral groove B6 are inside to be rotated there is bolt 7, bolt 7 outer end fixed mounting has turn knob 8, 4 upper ends fixed mounting of inserted block has step 9, step 9 upper end fixed mounting has thimble 10, the cartridge has tubular product 11 between thimble 10 and the die cavity 2, the inside fixed mounting in the left and right sides of throat mould 1 has fixed column 12, the inside fixed mounting of fixed column 12 has heating iron wire 13, fixed column 12 inner lateral wall fixed mounting has fluting 14.

Referring to fig. 1 and 2, the outer wall of the bolt 7 is threaded, the inner walls of the grooves a5 and B6 are threaded to match the outer wall of the bolt 7, so as to form a rotary structure, when the pipe 11 is to be necked down, the insert 4 is first inserted into the groove 3 in a downward alignment so that the euroca a5 and the groove B6 are aligned, the bolt 7 is rotated inward, the outer wall of the bolt 7 is threaded to match the inner walls of the grooves a5 and B6, so that the bolt 7 is rotated inward in the grooves a5 and B6, the insert 4 is fixed inside the groove 3, so that the step 9 and the thimble 10 are placed inside the die cavity 2, the groove 3 is inserted downward into the die cavity 2 so that the thimble 10 is inserted into the pipe 11, the pipe 11 is deformed toward the neck diameter by extrusion on the inner wall of the die cavity 3 as the diameter of the die cavity 2 is reduced, and the thimble 10 inside the pipe 11 is pressed outward to prevent the pipe 11 from being excessively extruded inward, thereby make tubular product 11 one-time molding, improved the efficiency of processing, if need make tubular product 11 binding off the length of part different, when producing the mould as required, to the thickness regulation of step 9 to make tubular product 11 inject the degree of depth difference in the die cavity 2, thereby change the length of throat, improved the practicality of mould.

Referring to fig. 1, seven groups of slots 14 are fixedly installed and are uniformly distributed, when a pipe 11 is inserted into the die cavity 2 downwards to be subjected to necking processing, the heating iron wire 13 is connected with an external power supply to be electrified and heated, heat is dissipated from the die cavity 2 of the slot 14 fixedly installed on the inner side wall to heat the pipe 11, the plasticity of the pipe 11 is more obvious, necking extrusion processing of the pipe 11 is facilitated, and the processing effect is improved.

Referring to fig. 1, the size of the thimble 10 is matched with the inner size of the pipe 11, when the pipe 11 is processed by necking, the insert block 4 is firstly inserted into the slot 3 in a downward alignment manner, the euroca a5 is aligned with the screw groove B6, the bolt 7 is rotated inwards, the outer wall of the bolt 7 is cut with threads to match with the threads of the inner walls of the screw groove a5 and the screw groove B6, the bolt 7 is rotated inwards in the screw groove a5 and the screw groove B6, the insert block 4 is fixed in the slot 3, so that the step 9 and the thimble 10 are arranged in the die groove 2, the slot 3 is inserted into the die groove 2 downwards, the thimble 10 is inserted into the pipe 11, the thimble 11 deforms to an inwardly contracted caliber under the extrusion of the inner wall of the die groove 3 along with the reduction of the caliber of the die groove 2, and the thimble 10 in the pipe 11 presses the pipe 11 outwards to avoid the pipe 11 from being excessively extruded inwards, so that the pipe 11 is formed at one time, thereby improving the processing efficiency, if the length of the necking part of the pipe 11 is required to be different, the thickness of the step 9 is adjusted when the die is produced according to the requirement, so that the depth of the pipe 11 inserted into the die cavity 2 is different, the length of the necking is changed, and the practicability of the die is improved.

Referring to fig. 1, the input end of the heating iron wire 13 is electrically connected with an external power supply through a lead.

Wherein, heating iron wire 13 is prior art product, and heating iron wire 13 model is 0Cr21Al6Nb, and no longer repeated here.

The embodiment of the utility model provides a necking die, when carrying out necking processing to tubular product 11, at first aim at plug 4 downwards and insert in slot 3, make europa A5 and thread groove B6 align, inwards rotate bolt 7, bolt 7 outer wall is cut with screw thread and thread groove A5 and thread groove B6 inner wall screw thread cooperatees, make bolt 7 inwards rotate in thread groove A5 and thread groove B6 and get into, make plug 4 fix inside slot 3, thereby make step 9 and thimble 10 arrange inside die cavity 2, insert slot 3 downwards into die cavity 2, make thimble 10 inject inside tubular product 11, along with the bore reduction of die cavity 2, tube 11 warp to the inside diameter that contracts under the inner wall extrusion of die cavity 3, and the inside thimble 10 of tubular product 11 outwards supports and presses tubular product 11 and has avoided tubular product 11 excessively inwards to extrude, thereby make tubular product 11 once only take shape, the efficiency of processing has been improved, if need make the length of the part of necking-in 11 different, when producing the mould as required, adjust the thickness of step 9 to make tubular product 11 inject the degree of depth difference in the die cavity 2, when injecting tubular product 11 downwards into die cavity 2 and carry out necking processing, will heat iron wire 13 switch on external power supply ohmic heating, the heat distributes in 14 die cavities 2 of fluting of inner lateral wall fixed mounting, heats tubular product 11, makes the plasticity of tubular product 11 more obvious, is convenient for to the necking extrusion processing of tubular product 11.

It should be noted that the utility model relates to a necking die, including heating iron wire 13, the part is the general standard component or the part that technical staff in this field knows, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A necking die is characterized by comprising a necking die (1), a die groove (2) is fixedly arranged inside the center of the necking die (1), a slot (3) is fixedly arranged inside the lower end of the die groove (2), an insert block (4) is inserted inside the slot (3), screw grooves A (5) are fixedly arranged inside the left side and the right side of the insert block (4), screw grooves B (6) are fixedly arranged inside the left side and the right side of the insert block (3), bolts (7) are rotatably arranged inside the screw grooves A (5) and the screw grooves B (6), turning knobs (8) are fixedly arranged at the outer ends of the bolts (7), steps (9) are fixedly arranged at the upper ends of the insert blocks (4), ejector pins (10) are fixedly arranged at the upper ends of the steps (9), a pipe (11) is inserted between the ejector pins (10) and the die groove (2), fixed columns (12) are fixedly arranged inside the left side and the right side of the necking die (1), heating iron wires (13) are fixedly mounted inside the fixing columns (12), and grooves (14) are fixedly mounted on the inner end side walls of the fixing columns (12).

2. A necking die according to claim 1, wherein the outer wall of the bolt (7) is cut with threads, and the inner walls of the thread groove a (5) and the thread groove B (6) are cut with threads matched with the threads of the outer wall of the bolt (7) to form a rotating structure.

3. A necking die according to claim 1, wherein the slots (14) are fixedly mounted in seven groups and are evenly distributed.

4. A necking die according to claim 1, wherein the size of the ejector pin (10) is matched with the inner size of the pipe (11).

5. A necking die according to claim 1, wherein the input end of the heating wire (13) is electrically connected to an external power source through a wire.