CN219004440U

CN219004440U - Bolt cold heading forming die

Info

Publication number: CN219004440U
Application number: CN202223098725.8U
Authority: CN
Inventors: 陈万成
Original assignee: Haiyan Wancheng Standard Parts Co ltd
Current assignee: Haiyan Wancheng Standard Parts Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-05-12
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a bolt cold heading forming die which comprises a lower die and an upper die, wherein a forming seat is embedded and arranged in the top wall of the lower die, protruding seats are symmetrically welded on two sides of the outer wall of the lower die, mounting grooves are formed in the two protruding seats from the top wall of the lower die to the inner side of the lower die, electric telescopic rods are fixedly welded on the bottom walls of the two mounting grooves, lug seats are fixedly welded on the top ends of the two electric telescopic rods, the two lug seats are respectively welded on two opposite side walls of the upper die, a sealing groove in a shape of a Chinese character 'kou' is formed in the outer circle of the top wall of the lower die, protruding strips are fixedly welded on the bottom wall of the upper die, sealing strips are fixedly bonded on the inner walls of the protruding strips, and the whole body formed by the protruding strips and the sealing strips can be anastomosed and inserted into the sealing groove. The mold for cold heading forming of the bolt has the advantages that the external air can hardly influence the cold heading through the gap between the upper mold and the lower mold, so that the precision of the bolt manufactured after the cold heading is improved.

Description

Bolt cold heading forming die

Technical Field

The utility model belongs to the technical field of cold heading dies, and particularly relates to a die for cold heading forming of bolts.

Background

The cold heading process is a processing process that utilizes plastic deformation of metal under the action of external force, and redistributes and transfers the volume of metal by means of a die, thereby forming the required part or blank. Today, cold heading processes are often used to produce standard fasteners such as bolts.

In carrying out the present utility model, the inventors have found that at least the following problems exist in this technology: when using cold heading technology to produce the bolt, raw materials are often added into a mould to seal a forming cavity of the mould, so that the bolt is produced by cold heading. However, when the mold is used for sealing the forming cavity, external air often enters the forming cavity due to insufficient sealing effect, so that the cold heading process is influenced, and the precision of the cold-headed bolt is lower.

Therefore, we propose a mold for cold heading forming of bolts to solve the above problems.

Disclosure of Invention

The utility model mainly aims to provide a mold for cold heading forming of a bolt, wherein the cold heading is hardly influenced by external air through a gap between an upper mold and a lower mold, so that the precision of the bolt manufactured after cold heading is improved, and the problem in the background technology can be effectively solved.

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

the mold for cold heading forming of the bolt comprises a lower mold and an upper mold, wherein a forming seat is embedded in the top wall of the lower mold, protruding seats are symmetrically welded on two sides of the outer wall of the lower mold, mounting grooves are formed in the two protruding seats from the top wall of the protruding seats to the inside of the protruding seats, electric telescopic rods are fixedly welded on the bottom walls of the two mounting grooves, lug seats are fixedly welded on the top ends of the two electric telescopic rods, and the two lug seats are respectively welded on two opposite side walls of the upper mold;

the outer circle of lower mould roof has seted up and has been the seal groove of mouth font, the diapire fixed welding of last mould has the protrusion strip, wherein the inner wall of protrusion strip is fixed to be glued there is the sealing strip, the whole that protrusion strip and sealing strip constitute can coincide and insert in the seal groove.

As a preferred embodiment, a part outlet cavity isolated from the outside is formed in the lower die, wherein a hydraulic cylinder is arranged on the bottom wall of the part outlet cavity; the hydraulic cylinder is vertically arranged.

As a preferred embodiment, a transmission shaft is connected above the hydraulic cylinder, wherein the transmission shaft is connected with a piston block; the hydraulic cylinder can drive the transmission shaft to operate when in operation, so that the piston block on the transmission shaft can do lifting motion.

As a preferred embodiment, a slot is arranged between the piece outlet cavity and the forming seat, and the piston block is inserted into the slot in an anastomotic manner and is attached to the inner wall of the slot; and the top wall of the piston block is abutted with the forming seat, so that the forming seat can be driven to lift by lifting of the piston block.

As a preferred embodiment, the forming seat is provided with a plurality of forming cavities; each forming cavity can be used for cold heading forming of the bolt.

As a preferred embodiment, two opposite side walls of the piece outlet cavity are welded with backing plates; when the piston block is at the lowest position, two sides of the bottom wall of the piston block are respectively abutted with the two base plates, so that the two base plates can be used for supporting the piston block.

In summary, the technical effects and advantages of the present utility model are:

according to the mold for cold heading forming of the bolt, two electric telescopic rods are driven to shrink simultaneously to drive the upper mold to sink, so that the protruding strip of the bottom wall of the upper mold and the sealing strip are coincided and inserted into the sealing groove, the lower mold and the upper mold can be tightly attached, cold heading in a forming cavity can be smoothly performed, external air can hardly influence the cold heading through a gap between the upper mold and the lower mold, and the precision of the bolt manufactured after cold heading is improved;

the mold for cold heading forming of the bolt drives the transmission shaft to operate by driving the hydraulic cylinder to enable the piston block to rise and enter the pushing forming seat, so that the bolt after cold heading forming is automatically pushed out, and the trouble of manually taking a piece is avoided.

Drawings

FIG. 1 is a schematic top view of the present utility model;

FIG. 2 is a schematic view of the structure of the utility model from the bottom view;

fig. 3 is a cross-sectional view of the lower die of fig. 1 taken along line A-A in accordance with the present utility model.

In the figure: 1. a lower die; 2. an upper die; 3. forming a seat; 4. a protruding seat; 5. a mounting groove; 6. an electric telescopic rod; 7. an ear seat; 8. sealing grooves; 9. a protruding strip; 10. a sealing strip; 11. a piece outlet cavity; 12. a hydraulic cylinder; 13. a transmission shaft; 14. a piston block; 15. a backing plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-3, a mold for cold heading forming of a bolt comprises a lower mold 1 and an upper mold 2, wherein a forming seat 3 is embedded and installed by the top wall of the lower mold 1, a plurality of forming cavities are formed on the forming seat 3, each forming cavity can be used for cold heading forming of the bolt, protruding seats 4 are symmetrically welded on two sides of the outer wall of the lower mold 1, mounting grooves 5 are formed from the top wall of the two protruding seats 4 to the inside of the lower mold, electric telescopic rods 6 are fixedly welded on the bottom wall of the two mounting grooves 5, ear seats 7 are fixedly welded on the top ends of the two electric telescopic rods 6, the two ear seats 7 are respectively welded on two opposite side walls of the upper mold 2, a seal groove 8 in a shape of a mouth is formed on the outer circle of the top wall of the lower mold 1, protruding strips 9 are fixedly welded on the bottom wall of the upper mold 2, sealing strips 10 are fixedly adhered on the inner walls of the protruding strips 9, materials of the sealing strips 10 can be selected rubber, and the whole body composed of the protruding strips 9 and the sealing strips 10 can be inserted into the seal groove 8 in an anastomotic manner, so that external air cannot enter a gap between the lower mold 1 and the upper mold 2;

the inside of lower mould 1 is formed with the play piece chamber 11 that keeps apart with the external world, wherein go out the diapire in piece chamber 11 and install pneumatic cylinder 12, the pneumatic cylinder 12 is vertical to be set up, be connected with transmission shaft 13 above pneumatic cylinder 12, wherein transmission shaft 13 is connected with piston block 14, make the transmission shaft 13 operation can be driven when pneumatic cylinder 12 operates, make the piston block 14 on transmission shaft 13 can do elevating movement, be equipped with a slot between play piece chamber 11 and shaping seat 3, piston block 14 coincide and insert in the slot and with the inner wall laminating of slot, and the roof and the shaping seat 3 butt of piston block 14, thereby can drive shaping seat 3 to go up and down through the lift of piston block 14, all weld backing plate 15 at the opposite both sides wall in play piece chamber 11, when piston block 14 is in the bottom, the both sides of its diapire respectively with two backing plates 15 butt, consequently, can use two backing plates 15 to play the effect of supporting to piston block 14.

Working principle: the raw materials for manufacturing the bolts are added into a plurality of molding cavities of the molding seat 3, then the two electric telescopic rods 6 are driven to synchronously shrink, the upper die 2 and the two lug seats 7 are driven to sink, and finally the protruding strips 9 and the sealing strips 10 are anastomosed and inserted into the sealing grooves 8, so that gaps between the lower die 1 and the upper die 2 are closed, the molding seat 3 is isolated from the external environment, and the molding of the bolts is facilitated; after forming, the two electric telescopic rods 6 are synchronously stretched to drive the upper die 2 to be separated from the lower die 1, then the hydraulic cylinder 12 is driven to operate to drive the transmission shaft 13 to operate, so that the piston block 14 is lifted and pushes the forming seat 3 to be separated from the lower die 1, and the manufactured bolt can be automatically output.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a mould for cold heading shaping of bolt, includes lower mould (1) and last mould (2), its characterized in that, install shaping seat (3) by the roof of lower mould (1) is embedded, the bilateral symmetry of lower mould (1) outer wall is welded and is had protruding seat (4), is formed with mounting groove (5) to its inside by the roof of two protruding seat (4), two the diapire of mounting groove (5) is all fixed welding has electric telescopic handle (6), two the top of electric telescopic handle (6) is all fixed welding has ear seat (7), and two ear seat (7) weld respectively in the opposite both sides wall of last mould (2);

the sealing groove (8) in a shape of a Chinese character kou is formed in the outer circle of the top wall of the lower die (1), the bottom wall of the upper die (2) is fixedly welded with a protruding strip (9), a sealing strip (10) is fixedly adhered to the inner wall of the protruding strip (9), and the whole formed by the protruding strip (9) and the sealing strip (10) can be inserted into the sealing groove (8) in a matched mode.

2. The mold for cold heading forming of bolts according to claim 1, characterized in that an outlet cavity (11) isolated from the outside is formed in the lower mold (1), wherein a hydraulic cylinder (12) is mounted on the bottom wall of the outlet cavity (11).

3. The mold for cold heading forming of bolts according to claim 2, characterized in that a transmission shaft (13) is connected above the hydraulic cylinder (12), wherein the transmission shaft (13) is connected with a piston block (14).

4. A cold heading forming die for bolts according to claim 3, characterized in that a slot is arranged between the piece outlet cavity (11) and the forming seat (3), and the piston block (14) is inserted into the slot in an anastomotic manner and is attached to the inner wall of the slot.

5. The mold for cold heading forming of bolts according to claim 1, characterized in that the forming seat (3) is provided with a plurality of forming cavities.

6. The cold heading forming die for bolts according to claim 4, wherein backing plates (15) are welded on two opposite side walls of the piece outlet cavity (11).