CN217647276U

CN217647276U - Improved magnetic shield progressive die

Info

Publication number: CN217647276U
Application number: CN202122364949.8U
Authority: CN
Inventors: 塔夫·雅斯安; 安廷华; 王广忠; 邓康进
Original assignee: Jiangsu Eft Precision Parts Co ltd
Current assignee: Jiangsu Eft Precision Parts Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-10-25
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a modified magnetic shield upgrades mould, including last mould, lower mould, the punching press face of going up the mould is fixed with the moulding-die boss, be equipped with on the lower mould punching press face with moulding-die boss cooperation recess, the lower mould is equipped with the liftout hole of intercommunication recess bottom, is located the lower mould lower part and is equipped with the material returned board, be fixed with the liftout pole on the material returned board, the liftout pole is pegged graft in the liftout hole, be equipped with the through-hole on the material returned board, fastening screw passes through-hole A threaded connection in the threaded hole of lower mould bottom, fastening screw has last compression spring that has cup jointed, compression spring supports the screw head upper surface of material returned board lower surface and fastening screw respectively in the both ends, its characterized in that, fastening screw has cup jointed spacing sleeve pipe on the fastening screw, spacing sleeve pipe supports the screwhead of tight lower mould and fastening screw respectively in both ends, compression spring cup joints in spacing sleeve pipe.

Description

Improved magnetic shield progressive die

Technical Field

The utility model belongs to the technical field of the punching press, especially, relate to a modified magnetic shield upgrades mould.

Background

The progressive die (also called progressive die) is composed of a plurality of stations, each station is associated in sequence to finish different processing, and a series of different punching processing is finished in one stroke of the punching machine. After a stroke is completed, the material is moved forward by the punch feeder in a fixed step, so that a plurality of processes can be completed on one die.

The progressive die for producing the magnetic shield has the advantages that the size of the magnetic shield is smaller, the die structure is more compact, the overall size of the die is smaller, and the stamping speed is higher, so that the fastening screws used on the progressive die are often loosened to compress springs, the compression capacity is unstable, and the situations of screw fracture, spring drop and the like occur.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a modified magnetic shield upgrades mould, to the easy not hard up problem of current fastening screw, it cup joints on fastening screw to have increased the stop collar, support fastening screw's screwhead and the lower surface of lower mould respectively through the stop collar both ends, make fastening screw lock the back and increased fastening screw's latch face, difficult emergence is not hard up or takes place to squint and the fracture appears when producing, can solve the product card and pause, the screw is easy to be broken, the spring is because the abnormal phenomena such as uneven rupture of atress, the production efficiency is improved, reduce the waste product and take place, increase and extension mould life.

The utility model discloses a following technical scheme realizes:

the improved progressive die for the magnetic shield comprises an upper die and a lower die, wherein a die boss is fixed on a punching surface of the upper die, a groove matched with the die boss is formed in the punching surface of the lower die, a material ejecting hole communicated with the bottom of the groove is formed in the lower die, a material returning plate is arranged on the lower portion of the lower die and is fixedly provided with an ejecting rod, the ejecting rod is inserted into the material ejecting hole, a through hole A is formed in the material returning plate, a fastening screw penetrates through the through hole A and is connected into a threaded hole in the bottom of the lower die in a threaded manner, a compression spring is sleeved on the fastening screw, two ends of the compression spring respectively abut against the lower surface of the material returning plate and the upper surface of a screw head of the fastening screw, the improved progressive die is characterized in that a limiting sleeve is sleeved on the fastening screw, two ends of the limiting sleeve respectively abut against screw heads of the lower die and the fastening screw, and the compression spring is sleeved on the outer wall of the limiting sleeve.

Further, the gap between the outer wall of the limiting sleeve and the inner wall of the through hole A is 0.1-0.2mm.

Furthermore, a gasket is fixedly connected to the upper surface of the screw head of the fastening screw, and the compression spring abuts against the upper surface of the gasket.

Further, the stripper plate, the limiting sleeve and the gasket are all subjected to heat treatment, and the hardness is 43-48HRC.

Furthermore, the lower surface of the lower die is provided with an annular groove, the annular groove and the threaded hole are coaxially arranged, and one end of the limiting sleeve is inserted into the annular groove.

Furthermore, a push rod is fixedly connected to the stripper plate, a through hole B matched with the push rod is formed in the lower die, the push rod is inserted into the through hole B, and the length of the push rod is larger than that of the ejector rod.

The utility model has the advantages that;

1. make fastening screw's screwhead to support tight lower mould through setting up limit sleeve for fastening screw fixes more firmly, and difficult emergence is not hard up, and simultaneously, limit sleeve's use has been equivalent to increased fastening screw's diameter, makes it difficult emergence rupture in the use.

2. Through setting up the gasket, increased compression spring's the face of supporting tightly, make it be difficult for taking place to drop.

3. The clearance between the limit sleeve and the material returning plate is 0.1mm when the material returning plate, the limit sleeve and the gasket are subjected to heat treatment, so that the limit sleeve can smoothly slide in the material returning plate, and the service life of the material returning device is prolonged.

4. Through setting up the ring channel with spacing sleeve pipe one end insert the ring channel in, can make things convenient for spacing sheathed tube location, avoid appearing spacing sleeve pipe and material returned board scraping.

5. Through setting up the push rod, push rod length is greater than liftout pole length, when avoiding the punching press, when the punching die boss carries out the punching press, supports the liftout pole and causes the magnetic shield deformation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the present invention during stamping.

Fig. 3 is a partially enlarged structural view.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The embodiment provides an improved magnetic shield progressive die, as shown in fig. 1 to 3, which comprises an upper die 10 and a lower die 20, wherein a die boss is fixed on a stamping surface of the upper die 10, a groove matched with the die boss is arranged on the stamping surface of the lower die 20, a material ejecting hole 201 communicated with the bottom of the groove is formed in the lower die 20, a material returning plate 30 is arranged at the lower part of the lower die 20, a material ejecting rod 301 is fixed on the material returning plate 30, the material ejecting rod 301 is inserted into the material ejecting hole 201, a through hole a302 is formed in the material returning plate 30, a fastening screw 40 penetrates through the through hole a302 and is connected into a threaded hole 202 at the bottom of the lower die 20 through threads, a compression spring 401 is sleeved on the fastening screw 40, two ends of the compression spring 401 respectively abut against the lower surface of the material returning plate 30 and the upper surface of a screw head of the fastening screw 40, a limit sleeve 402 is sleeved on the fastening screw 40, two ends of the limit sleeve 402 respectively abut against screw heads of the lower die 20 and the fastening screw 40, and the compression spring 401 is sleeved on the outer wall of the limit sleeve 402.

Particularly, through advancing screw overcoat and connect limit sleeve, increase limit sleeve, use the fastening screw locking that limit sleeve is, avoided because four screws of the high-speed punching press of mould produce not hard up drawback, if the screw is local not hard up, can make the spring atress inequality cause single screw atress too big emergence of faults such as fracture appear, improved the mould life-span greatly and improved production efficiency.

Further, the clearance between the outer wall of limit sleeve 402 and the inner wall of through-hole A302 is 0.1mm, and the clearance between limit sleeve and through-hole A is 0.1mm for limit sleeve slides smoothly in through-hole A, extension returned material device life-span.

Furthermore, a gasket 403 is fixedly connected to an upper surface of the screw head of the fastening screw 40, and the compression spring 401 abuts against an upper surface of the gasket 403. In order to ensure the stable generation, the gasket 403 is a thickened gasket with the thickness of 3mm.

Furthermore, the stripper plate 30, the limiting sleeve 402 and the gasket 403 are all subjected to heat treatment, and the hardness is 43-48HRC. The service life can be prolonged after the hardness is improved through heat treatment.

Furthermore, the lower surface of the lower die 20 is provided with an annular groove 203, the annular groove 203 and the threaded hole 202 are coaxially arranged, and one end of the limiting sleeve 402 is inserted into the annular groove 203. The position of the limiting sleeve 402 can be conveniently limited by the annular groove 203, and the problem that the limiting sleeve 402 is scratched with the through hole A due to the fact that the limiting sleeve is not concentric with a fastening screw during installation is avoided.

Further, a push rod 303 is fixedly connected to the stripper plate 30, a through hole B204 matched with the push rod 303 is formed in the lower die 20, the push rod 303 is inserted into the through hole B204, and the length of the push rod 303 is greater than that of the ejector rod 301. Through setting up push rod 303, when avoiding going up mould 10 and carrying out the punching press, ejector pin 301 bumps with the moulding-die boss and leads to the product to warp.

In the specific working process, the material belt 50 enters between the upper die 10 and the lower die 20, the upper die 10 moves downwards, the four push rods 303 for closing the die push the stripper plate 30 to prop against the compression spring 401 to move downwards, the stripper plate 30 drives the three ejector rods 301 to move downwards simultaneously, the upper die moves to a bottom dead center, and the product forming is finished. Go up the mould and go upward, material returned plate 30 goes upward under compression spring 401 resilience effect, promotes three liftout pole 301 and with the product jack-up, the product takes off the material, accomplishes a duty cycle, uses spacing cover locking, has avoided producing not hard up drawback because four fastening screw of mould high-speed punching press (if fastening screw is local not hard up, can make the uneven single fastening screw atress that causes of compression spring atress too big emergence of failures such as fracture appear, has improved the mould life-span greatly and has improved production efficiency).

It is above the embodiment of the utility model, the event all is according to the utility model discloses the application scope structure, characteristic and principle do equivalent change or decoration, all include in the utility model discloses the within range.

Claims

1. The improved progressive die for the magnetic shield comprises an upper die (10) and a lower die (20), wherein a die boss is fixed on a stamping surface of the upper die (10), a groove matched with the die boss is formed in the stamping surface of the lower die (20), a material ejecting hole (201) communicated with the bottom of the groove is formed in the lower die (20), a material returning plate (30) is arranged on the lower portion of the lower die (20), a material ejecting rod (301) is fixed on the material returning plate (30), the material ejecting rod (301) is inserted into the material ejecting hole (201), a through hole A (302) is formed in the material returning plate (30), a fastening screw (40) penetrates through the through hole A (302) and is connected into a threaded hole (202) in the bottom of the lower die (20) in a threaded manner, a compression spring (401) is sleeved on the fastening screw (40), two ends of the compression spring (401) respectively abut against the lower surface of the material returning plate (30) and the upper surface of a screw head of the fastening screw (40), the progressive die is characterized in that a limit sleeve (402) is sleeved on the fastening screw head (40), two ends of the limit sleeve (402) respectively abut against the outer wall of the lower die sleeve (20), and the compression spring (402) is sleeved on the outer wall of the screw head (401).

2. The improved magnetic shield progressive die of claim 1, wherein: and a gap between the outer wall of the limiting sleeve (402) and the inner wall of the through hole A (302) is 0.1 to 0.2mm.

3. The improved magnetic shield progressive die of claim 1, wherein: the upper surface of the screw head of the fastening screw (40) is fixedly connected with a gasket (403), and the compression spring (401) abuts against the upper surface of the gasket (403).

4. The improved magnetic shield progressive die of claim 3, wherein: the stripper plate (30), the limiting sleeve (402) and the gasket (403) are all subjected to heat treatment, and the hardness is 43-48HRC.

5. The improved magnetic shield progressive die of claim 1, wherein: the lower surface of the lower die (20) is provided with an annular groove (203), the annular groove (203) and the threaded hole (202) are coaxially arranged, and one end of the limiting sleeve (402) is inserted into the annular groove (203).

6. The improved magnetic shield progressive die of claim 1, wherein: still fixed connection push rod (303) on flitch (30), lower mould (20) are equipped with push rod (303) complex through-hole B (204), in push rod (303) inserted through-hole B (204), push rod (303) length is greater than ejector beam (301) length.