CN213134743U

CN213134743U - Improve mould material returned structure of product drawing of patterns indentation

Info

Publication number: CN213134743U
Application number: CN202021287003.5U
Authority: CN
Inventors: 张朋; 张伟良; 桂学雨; 郭旭; 李得英
Original assignee: Shanghai Lingyun Auto Mould Co ltd
Current assignee: Shanghai Lingyun Auto Mould Co ltd
Priority date: 2020-07-04
Filing date: 2020-07-04
Publication date: 2021-05-07
Anticipated expiration: 2030-07-04

Abstract

The utility model relates to a mould material returning structure for improving product demoulding indentation, which belongs to the technical field of mould equipment and comprises a material supporting thimble and a material supporting gap control block, wherein the material supporting thimble is connected with a mould through an elastic device, the material supporting gap control block is connected with the material supporting thimble and arranged in the same direction as the material supporting thimble and protrudes out of the material supporting thimble, when the mould is closed, the material supporting gap control block firstly forms a support to compress the elastic device so as to drive the material supporting thimble to retract, when the material is formed, a certain gap is formed between the material supporting thimble and the material, thereby avoiding the material supporting thimble from ejecting traces or pits on the material, after the material is formed, the mould is opened, the elastic device releases a compressed stroke, the elastic device drives the material supporting thimble to eject the material out of the mould, because the formed material has high rigidity and strength, the material supporting thimble can not generate indentation on the ejection of the material, thereby effectively improving the indentation of the product in the demoulding process.

Description

Improve mould material returned structure of product drawing of patterns indentation

Technical Field

The utility model relates to a mould equipment technical field, in particular to improve mould material returned structure of product drawing of patterns indentation.

Background

In automobile manufacturing, automobile body parts are various and have different shapes. The large and small assembly parts of the body-in-white are complex in shape, high in strength and hardness and high in quantity demand, and the required parts are produced by relying on a high-tonnage hydraulic press stamping die in order to guarantee quality and quantity and complete a customer order. The production mode has stable product quality and high production efficiency, and can well meet the automobile market demand.

Current hot stamping die of car in the punching press production process, after punching press compound die shaping, the slider goes upward on the press, and the mould is opened, has the process that a product was ejecting out the mold core, and the product of being convenient for takes out from the mould, guarantees the production continuity. At present, an elastic thimble with the diameter of 8mm is used for ejecting a product, the product can be ejected smoothly only by using the force of more than 750KG, the force is large, and the plate before hot stamping is heated to more than 900 ℃, so that the texture is very soft. The ejector pin can eject traces or pits on the product, even puncture the product, and cause poor product quality and even rejection.

In addition, if the product is not ejected, causing the product to become stuck in the die and the die continues to produce, the next press will cause the die to double the web. Once the deformation occurs, the die surface steel block is damaged slightly, and the die frame of the casting is cracked and deformed or even the die is scrapped heavily. Great remediation cost is brought to enterprises, and the progress of projects is greatly delayed.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's defect, the utility model provides an improve mould material returned structure of product drawing of patterns indentation, hold in the palm material clearance control block connection and protrusion through setting up and hold in the palm the material thimble, during the compound die, hold in the palm the material clearance control block and at first compressed and make and hold in the palm and form certain clearance between material thimble and the material spare, after the die sinking, hold in the palm the material spare after the material thimble passes through the ejecting shaping of resilient means, the contact of material spare with holding in the palm the material thimble in the forming process has been avoided, thereby the drawing of patterns indentation of material spare has effectively been improved.

The technical scheme for realizing the purpose is as follows:

the utility model provides a mould material returning structure for improving product demoulding indentation, which comprises a material supporting thimble arranged in a forming insert of a mould, wherein the material supporting thimble is connected with the mould through an elastic device, the material supporting thimble is also connected with a material supporting gap control block, the material supporting gap control block extends along the direction back to the elastic device and protrudes out of the material supporting thimble, so that when the mould is closed, the material supporting gap control block is firstly compressed to form a certain gap between the material supporting thimble and a formed material, thereby avoiding the contact between the material with high temperature and soft texture in the forming process and the material supporting thimble;

the material supporting gap control block is positioned on the outer side of the forming insert so as to avoid the forming operation of the forming insert.

Further, the elastic device is a spring or a nitrogen cylinder.

Furthermore, the material supporting device further comprises a material supporting plate connected between the material supporting thimble and the elastic device, and the material supporting gap control block is detachably connected to the material supporting plate so as to facilitate replacement of the material supporting gap control block.

Furthermore, the material supporting ejector pins are arranged in the middle of the material supporting plate, the material supporting gap control blocks are symmetrically arranged at two ends of the material supporting plate, and through the uniformly distributed structural design, the stress of the material returning structure is more uniform, and the service life of the material returning structure is prolonged.

Furthermore, the die also comprises a material supporting gap supporting block, and the material supporting gap supporting block and the material supporting gap control block are symmetrically arranged, so that the material supporting gap supporting block and the material supporting gap control block form support when the die is closed.

Has the advantages that: compared with the prior art, the utility model discloses a difference lies in, the utility model provides an improve mould material returned structure of product drawing of patterns indentation, including holding in the palm the material thimble and holding in the palm material clearance control block, hold in the palm the material thimble and pass through resilient means and connect the mould, hold in the palm material clearance control block connection and hold in the palm the material thimble syntropy and set up, and protrusion in holding in the palm the material thimble, hold in the palm the material clearance control block and be located the outside that the shaping was inserted, when the compound die, hold in the palm the material clearance control block and at first form the support, make resilient means compressed to it contracts to drive and hold in the palm the material thimble, when making the material shaping, hold in the palm and have certain clearance between material thimble and the material, avoid holding in the palm the. After the material piece is molded, the mold is opened, the elastic device releases the compressed stroke, the elastic device drives the material supporting ejector pin to eject the material piece out of the mold, and the molded material piece has high rigidity and strength, so that the material supporting ejector pin basically cannot generate indentation when ejecting the material piece, and the indentation in the product demolding process is effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of a mold material returning structure for improving mold release impression of a product according to a preferred embodiment of the present application.

Fig. 2 is a partial structural schematic diagram of a mold material returning structure in the present application.

Fig. 3 is a schematic partial cross-sectional view of a mold stripping structure according to the present application.

FIG. 4 is a schematic view of a partial structure of a mold material returning structure installed in a lower mold according to the present application

The device comprises a die 10, a material supporting thimble 1, a forming insert 11, an upper die 12, a lower die 13, an elastic device 2, a material supporting gap control block 3, a material supporting plate 4 and a material supporting gap support block 5.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 4, the utility model provides an improve mould material returned structure of product drawing of patterns indentation, it is including installing in the shaping of mould 10 inserts the material thimble 1 of holding in the palm in 11, hold in the palm material thimble 1 and connect through elastic device 2 mould 10, hold in the palm material thimble 1 and still be connected with and hold in the palm material clearance control block 3, hold in the palm material clearance control block 3 along the direction extension dorsad elastic device 2, and protrusion in hold in the palm material thimble 1, when making mould 10 compound die, hold in the palm material clearance control block 3 and at first compressed and make hold in the palm material thimble 1 and by forming certain clearance between the shaping material to avoid high temperature in the shaping process, and soft texture material and the contact of holding in the palm material thimble 1 and form the indentation;

the material supporting gap control block 3 is positioned at the outer side of the forming insert 11 so as to avoid the forming operation of the forming insert 11.

Preferably, said elastic means 2 are springs or nitrogen cylinders.

Preferably, the material supporting device further comprises a material supporting plate 4 connected between the material supporting thimble 1 and the elastic device 2, and the material supporting gap control block 3 is detachably connected to the material supporting plate 4 so as to facilitate replacement of the material supporting gap control block 3.

Preferably, the material supporting ejector pins 1 are installed in the middle of the material supporting plate 4, the material supporting gap control blocks 3 are symmetrically installed at two ends of the material supporting plate 4, and through the uniformly distributed structural design, the stress of the material returning structure is more uniform, and the service life of the material returning structure is prolonged.

In addition, considering that if the material supporting gap control block 3 is directly contacted with the mold 10 to form a support, the mold 10 may be damaged to some extent after long-term use, and the mold 10 generally has higher cost and bears higher risk for the enterprise.

As a preferred embodiment of the present invention, the mold 10 is provided with the material supporting gap supporting block 5, the material supporting gap supporting block 5 and the material supporting gap control block 3 are symmetrically arranged, so that the mold 10 is assembled, the material supporting gap supporting block 5 and the material supporting gap control block 3 form a support, even if the mold is used for a long time to cause a certain damage and influence the precision, the material supporting gap control block 3 and/or the material supporting gap supporting block 5 can be directly replaced, so as to reduce the use cost.

It should be noted that, during the molding process of the thermoforming mold, some molded material pieces are easily attached to the upper mold 12, and some molded material pieces are easily attached to the lower mold 13. The die material returning structure for improving the product demoulding impression can be simultaneously suitable for the installation of the upper die 12 and the lower die 13.

In the case where the lower mold 13 is easily attached, the material holding ejector pin 1, the elastic device 2, and the material holding gap control block 3 are all mounted on the lower mold 13. In an initial state before die assembly, the material supporting thimble 1 and the material supporting gap control block 3 both protrude out of the forming insert 11, in the die assembly process, the material supporting gap control block 3 is firstly supported on the top of the upper die 12 or on a material supporting gap supporting block 5 arranged on the top of the upper die 12 to form a support, after the support is formed, the elastic device 2 is inevitably compressed, the material supporting thimble 1 is driven by the elastic device 2 to shrink downwards, so that the material supporting thimble 1 is gradually far away from a material until a certain gap is formed with the material during die assembly, namely, the top of the material supporting thimble 1 and a forming surface of the forming insert 11 have a certain gap. At the moment, the material can be smoothly molded through the upper and lower molding inserts 11, and the situation that the material supporting thimble 1 is continuously contacted with the material in the conventional technology is avoided.

After the material is completely molded, the upper die 12 moves upwards, the elastic device 2 gradually releases the stroke to eject the material supporting thimble 1 and the material supporting gap control block 3, and the material supporting thimble 1 moves upwards to eject a product in the molding insert 11. As the structure of the material is transformed, a high-strength martensite structure is generated, and the material has high rigidity and strength, and at the moment, the top mark formed by ejecting the material through the material supporting tip 1 can be almost ignored.

Similarly, the operation principle is the same for the case where the upper mold 12 is easily attached. The material supporting thimble 1, the elastic device 2 and the material supporting gap control block 3 are arranged on the upper die 12, and the material supporting gap support block 5 is correspondingly arranged on the lower die 13, which is not described in detail herein.

The above embodiments are merely preferred embodiments of the present disclosure, which are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present disclosure, should be included in the scope of the present disclosure.

Claims

1. A mould material returning structure for improving the demoulding impression of a product comprises a material supporting thimble arranged in a forming insert of a mould, wherein the material supporting thimble is connected with the mould through an elastic device;

2. The mold stripping structure for improving the impression of product release as claimed in claim 1, wherein said elastic means is a spring or a nitrogen cylinder.

3. The mold stripping structure for improving the mold release impression of a product as claimed in claim 1, further comprising a retainer plate connected between said retainer ejector pin and said elastic device, wherein said retainer gap control block is detachably connected to said retainer plate.

4. The mold stripping structure for improving the product mold release impression as claimed in claim 3, wherein said material-holding ejector pin is installed in the middle of said material-holding plate, and said material-holding gap control blocks are symmetrically installed at both ends of said material-holding plate.

5. The mold stripping structure for improving the product demolding impression as claimed in any one of claims 1 to 4, wherein the mold further comprises a material supporting gap supporting block, the material supporting gap supporting block and the material supporting gap controlling block are symmetrically arranged, so that the material supporting gap supporting block and the material supporting gap controlling block form a support when the mold is closed.