CN210098753U - Necking device - Google Patents

Abstract

The utility model discloses a throat device, including the fixed last mould and the lower mould that can reciprocate, be equipped with the push rod that runs through last mould and a plurality of mold core that is used for the product throat in going up the mould, the mold core is equipped with a plurality of "T" shape slider, it is equipped with "T" shape spout to go up the mould, thereby slider and spout swing joint make the mold core can follow the mould bottom surface roll-off, thereby the spout has the predetermined inclination and makes and produce the interval between every mold core of mould bottom surface on the roll-off, the push rod is equipped with the first ejector pad in can pushing back the mold core into the mould, the lower mould is equipped with the pillar that is used for placing the product, the spring of jack-up push rod when the lower mould rebound, and can be with the product thimble that makes progress the jack-up, the spring is located the pillar. The utility model discloses workman easy operation, a workman can control production to many this throat devices, has higher efficiency.

Description

Necking device

Technical Field

The utility model relates to a field at throat device especially relates to a throat device.

Background

The pipe necking is a forming process for reducing the diameter of the end part of a pipe blank, the pipe blank enters a deformation zone under the action of axial force, the necking plastic deformation of tangential contraction is generated in the deformation zone, then the pipe blank enters a stable zone, and finally the reduced diameter of the end part is formed.

A general circular tube-shaped metal product is subjected to necking by using a hydraulic press matched mould, a movable plate of the hydraulic press pushes the mould to perform necking forming on the mouth part of the product, the formed product is retained in the mould due to deformation, workers need to exert force to take out the product, time and labor are wasted, and efficiency is not high; the hydraulic machine on the market usually adopts the upper plate to promote the mould downwards and carry out the shaping, if the hydro-cylinder has oil circuit trouble, just can make the upper plate drop downwards and smash the workman of injure being operated, awaits improving.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a necking device, workers only need to put products into a lower die, and the products after necking forming can be jacked up by a thimble, so that the products are convenient to take; the upper die is fixed, the lower die is adopted to move, and the hands of workers can be prevented from being injured by pounding after accidents occur.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a necking device comprises an immovable upper die and a lower die capable of moving up and down, wherein a push rod penetrating through the upper die and a plurality of die cores for necking products are arranged in the upper die, the mould core is provided with a plurality of T-shaped sliding blocks, the upper mould is provided with a T-shaped sliding groove, the sliding blocks are movably connected with the sliding groove so that the mould core can slide out from the bottom surface of the upper mould, the sliding groove has a preset inclined angle so as to generate a space between each mold core sliding out of the bottom surface of the upper mold, the push rod is provided with a first push block which can push the mold core back into the upper mold, the lower mold is provided with a support for placing a product, a spring which can jack the push rod when the lower mold moves upwards and a thimble which can jack the product upwards, the spring is positioned in the support, the bottom of the ejector pin is connected with the spring, and the top of the ejector pin can penetrate out of the upper end face of the support.

As the utility model discloses further improve, the mold core cross section be fan-shaped, mold core quantity be 8, 8 mold cores constitute the structure of a round platform shape and carry out circumference array uniformly round the central line of structure. When the 8 mold cores are closed, the mold cores are attached to each other without gaps, and the mold cores can be in an unfolded state downwards along the T-shaped sliding groove of the upper mold.

As the utility model discloses the further improvement still includes fixed plate, fly leaf, guide pillar, last mould and guide pillar fixed mounting at the fixed plate lower extreme, lower mould fixed mounting in the fly leaf upper end, fly leaf accessible hydro-cylinder drive and reciprocate along the axis direction of guide pillar. The fixed plate is always fixed, and the movable plate can move up and down along the guide post.

As the utility model discloses further improve, mold core bottom be equipped with the shaping portion and the shaping groove that are used for the shaping product throat, first ejector pad be located the shaping inslot. After the first push block is positioned in the forming groove, the first push block can also play a role in necking the upper end face of a product.

As a further improvement, the mold core is provided with a movable groove, the push rod is provided with a second push block which can push the mold core back into the upper mold, and the second push block is positioned in the movable groove. When the lower die moves upwards, the push rod can be pushed to move upwards, the second push block can prop against the upper end face of the movable groove, so that the die cores move upwards until the plurality of die cores are in a closed state, and the first push block and the second push block have the effect of pushing the die cores to be closed.

As the utility model discloses further improve, mold core side be equipped with the spacing groove that prevents the mold core and fall downwards, last mould be equipped with stop screw, stop screw's front end is located the spacing inslot. The mold core gradually expands downwards along the T-shaped sliding groove of the upper mold, and the limiting screw is arranged to limit the limiting groove of the mold core, so that the mold core cannot fall downwards.

As the utility model discloses further improve, last mould be equipped with the locating hole, the lower mould be equipped with the reference column, the reference column can penetrate in the locating hole. The upper die and the lower die can be ensured to be in a concentric state by the sleeving of the positioning holes and the positioning columns.

As the utility model discloses further improve, the lower mould including putting thing piece and lower mould bedplate, put the thing piece and pass through bolt fixed mounting on the lower mould bedplate, pillar bottom be equipped with step portion, put thing piece bottom be equipped with the fixed orifices, step portion be located the fixed orifices and bottom and lower mould bedplate paste and lean on, pillar upper end wear out and put thing piece up end, spring bottom and lower mould bedplate paste and lean on.

As a further improvement, the ejector pin and the spring are provided with a gasket which can jack the push rod when the lower die moves upwards. The thimble and the push rod are in contact with the gasket, so that the stress of the spring is uniform, and the spring cannot deflect.

As the utility model discloses further improve, the push rod lower extreme set up the material pole of taking off that has inclination, the material pole of taking off be located first ejector pad lower extreme. The stripping rod has an inclined angle, and a product is easy to strip after necking.

The utility model has the advantages that the operation of workers is simple, one worker can control and produce a plurality of necking devices, and the efficiency is higher; the lower die is provided with the ejector pin, so that a product formed by necking can be ejected, and workers can easily take the product; the lower die is adopted to move up and down, and the upper die is fixed, so that the hands of workers can be prevented from being hit due to accidents of the oil cylinder; after necking, the push rod and the mold cores naturally fall under the action of gravity, so that the plurality of mold cores can move downwards to form a space between each mold core, and a product after necking is separated from the mold cores and is positioned on the support.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is an exploded view of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 2: a necking device comprises an upper die 4 which is fixed and a lower die 20 which can move up and down, a push rod 2 which penetrates through the upper die 4 and a plurality of die cores 3 which are used for necking products are arranged in the upper die 4, the die cores 3 are provided with a plurality of T-shaped sliding blocks 3e, the upper die 4 is provided with a T-shaped sliding groove 4a, the sliding blocks 3e are movably connected with the sliding groove 4a so that the die cores 3 can slide out from the bottom surface of the upper die 4, the sliding groove 4a has a preset inclination angle so that a space is formed between each die core 3 which slides out of the bottom surface of the upper die 4, the push rod 2 is provided with a first push block 2b which can push the die cores 3 back into the upper die 4, the lower die 20 is provided with a support column 5 which is used for placing the products, a spring 7 which can push the push up the push rod 2 when the lower, the bottom of the thimble 6 is connected with a spring 7, and the top of the thimble 6 can penetrate out of the upper end surface of the pillar 5.

The cross section of the mold cores 3 is fan-shaped, the number of the mold cores 3 is 8, and the 8 mold cores 3 form a truncated cone-shaped structural body and are uniformly and circumferentially arranged around the center line of the structural body.

The die comprises a fixed plate 1, a movable plate 8 and a guide pillar 9, wherein an upper die 4 and the guide pillar 9 are fixedly arranged at the lower end of the fixed plate 1, a lower die 20 is fixedly arranged at the upper end of the movable plate 8, and the movable plate 8 can be driven by an oil cylinder 10 to move up and down along the central axis direction of the guide pillar 9.

The bottom of the mold core 3 is provided with a forming part 3d and a forming groove 3b for forming the necking of the product, and the first push block 2b is positioned in the forming groove 3 b.

A movable groove 3a is arranged in the mold core 3, a second push block 2a capable of pushing the mold core back into the upper mold is arranged on the push rod, and the second push block 2a is located in the movable groove 3 a.

The side of the mold core 3 is provided with a limiting groove 3c for preventing the mold core 3 from falling downwards, the upper mold 4 is provided with a limiting screw 11, and the front end of the limiting screw 11 is positioned in the limiting groove 3 c.

The upper die 4 is provided with a positioning hole 4b, the lower die 20 is provided with a positioning column 15, and the positioning column 15 can penetrate into the positioning hole 4 b.

The lower die 20 comprises an object placing block 12 and a lower die seat plate 13, the object placing block 12 is fixedly mounted on the lower die seat plate 13 through a bolt 16, a step part 5a is arranged at the bottom of the strut 5, a fixing hole 12a is formed in the bottom of the object placing block 12, the step part 5a is located in the fixing hole 12a, the bottom of the step part is attached to the lower die seat plate 13, the upper end of the strut 5 penetrates out of the upper end face of the object placing block 12, and the bottom of the spring 7 is attached to the lower.

A spacer 14 which can jack up the push rod 2 when the lower die 20 moves upwards is arranged between the ejector pin 6 and the spring 7.

The lower end of the push rod 2 is provided with a stripping rod 2c with an inclined angle, and the stripping rod 2c is positioned at the lower end of the first push block 2 b.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A necking device is characterized by comprising an upper die which is fixed and a lower die which can move up and down, a push rod penetrating through the upper die and a plurality of die cores for necking products are arranged in the upper die, the die cores are provided with a plurality of T-shaped sliding blocks, the upper die is provided with a T-shaped sliding groove, the sliding block is movably connected with the sliding groove so that the die core can slide out from the bottom surface of the upper die, the sliding groove has a preset inclined angle so as to generate a space between each mold core sliding out of the bottom surface of the upper mold, the push rod is provided with a first push block which can push the mold core back into the upper mold, the lower mold is provided with a support for placing a product, a spring which can jack the push rod when the lower mold moves upwards and a thimble which can jack the product upwards, the spring is positioned in the support, the bottom of the ejector pin is connected with the spring, and the top of the ejector pin can penetrate out of the upper end face of the support.

2. A necking device according to claim 1, wherein the cross-section of the core is fan-shaped, the number of the cores is 8, and the 8 cores form a truncated cone-shaped structure and are evenly circumferentially arranged around a center line of the structure.

3. The necking device of claim 1, further comprising a fixed plate, a movable plate and a guide post, wherein the upper die and the guide post are fixedly mounted at the lower end of the fixed plate, the lower die is fixedly mounted at the upper end of the movable plate, and the movable plate can be driven by an oil cylinder to move up and down along the central axis of the guide post.

4. A necking device according to claim 1, wherein the mold core bottom is provided with a forming part for necking a formed product and a forming groove, and the first push block is positioned in the forming groove.

5. A necking device according to claim 1, wherein the mold core is provided with a movable groove, the push rod is provided with a second push block capable of pushing the mold core back into the upper mold, and the second push block is positioned in the movable groove.

6. The necking device of claim 1, wherein the side surface of the mold core is provided with a limiting groove for preventing the mold core from falling downwards, the upper mold is provided with a limiting screw, and the front end of the limiting screw is positioned in the limiting groove.

7. A necking device according to claim 1 wherein the upper die is provided with a positioning hole and the lower die is provided with a positioning post, the positioning post being insertable into the positioning hole.

8. A necking device according to claim 1, wherein the lower die comprises an object placing block and a lower die seat plate, the object placing block is fixedly mounted on the lower die seat plate through bolts, a step part is arranged at the bottom of the strut, a fixing hole is arranged at the bottom of the object placing block, the step part is positioned in the fixing hole, the bottom of the step part is attached to the lower die seat plate, the upper end of the strut penetrates through the upper end surface of the object placing block, and the bottom of the spring is attached to the lower die seat plate.

9. A necking device according to claim 1, wherein a spacer for lifting the push rod when the lower mold moves upward is provided between the push rod and the spring.

10. A necking device according to claim 1, wherein the lower end of the pushing rod is provided with a stripper rod with an inclined angle, and the stripper rod is positioned at the lower end of the first pushing block.

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