CN212796008U

CN212796008U - Demoulding back-blowing device for vertical vibration forming machine

Info

Publication number: CN212796008U
Application number: CN202020557895.XU
Authority: CN
Inventors: 张晓红; 高文斌; 高有栋; 张龙
Original assignee: Ningxia Yongwei Carbon Industry Co ltd
Current assignee: Ningxia Yongwei Carbon Industry Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2021-03-26
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses a drawing of patterns blowback device for vertical vibration molding machine, it includes die block, cylinder, flange, baffle, case, spring, first trachea, air chamber, second trachea, air flue and valve port, the utility model discloses with evacuation process and blowback drawing of patterns process integration together, solved the problem of product bottom surface with the die block adhesion, reduced the quality problem that product drawing of patterns in-process product was broken or the internal fracture leads to, improved the efficiency of product drawing of patterns.

Description

Demoulding back-blowing device for vertical vibration forming machine

Technical Field

The utility model relates to a charcoal electrode production facility field especially relates to a drawing of patterns blowback device for vertical vibration molding machine.

Background

At present, the forming of the carbon electrode belongs to compression molding, and the forming mode comprises a vertical vibration mode and a horizontal vibration mode. China carbon electrode manufacturing enterprises basically adopt a vertical vibration forming mode, vacuumizing treatment is needed in order to improve the internal quality of a product in the product forming process, and the product is separated from a forming machine mold after vibration forming, and the product and the mold are adhered due to material characteristics and vacuumizing action. Use machine oil, anthracene oil, molybdenum disulfide, stearic acid etc. as the release agent among the traditional production technology, though the die sticking problem of last moulding-die, mould bucket inner wall can be solved to these modes, the problem of die block die sticking can't be solved, its leading cause lies in: under the action of huge pressure and vacuumizing, a sucker effect is formed between the bottom surface of the product and the bottom template, and the suction acting force can crack the lower surface of the electrode and break the product when the bottom membrane is demoulded, more importantly, the problem of internal strain which is not easy to find by the product is generated, so that the product is broken in the subsequent production process or the using process, and quality accidents are formed. Therefore, a demolding blowback device is needed to solve the problem of adhesion between the product and the bottom die.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a drawing of patterns blowback device for vertical vibration molding machine.

The utility model discloses an adopt following technical scheme to realize: a demoulding back-blowing device for a vertical vibration forming machine comprises a bottom die, a cylinder, a flange, a partition plate, a valve core, a spring, a first air pipe, an air chamber, a second air pipe, an air passage and a valve port, wherein a conical opening penetrating through the bottom die is formed in the bottom die; the upper surface of the bottom die is provided with a valve port; the valve port is communicated with the conical port; a concentric circular partition plate coaxial with the conical opening is fixed on the square flange below the bottom die; the lower surface of the partition plate is provided with a cylindrical cylinder which is coaxial with the conical opening and is closed at the bottom; a valve core with the head part positioned in the conical opening and a spring sleeved on an I-shaped structure at the tail part of the valve core are arranged in the cylinder; a gap is formed between the lower surface of the tail part of the valve core and the upper surface of the cylinder; an opening is formed in one side of the bottom end of the air cylinder; the opening is communicated with the air chamber; the air chamber is communicated with a first air pipe; an air passage is arranged on one side of the conical opening; the air passage is positioned in the bottom die; the air passage is communicated with the second air pipe.

The diameter of the inner circle of the partition plate is smaller than the diameter of the opening on the lower surface of the bottom die.

The head of the valve core is clamped in the conical opening by the partition plate, and the head of the valve core can only move up and down in the conical opening; the spring is stretched and deformed up and down in an area defined by the partition plate and the I-shaped structure at the tail part of the valve core.

Compressed air is blown from the first air pipe, the pressure of the spring is smaller than that of the blown compressed air, the valve core moves upwards until the side face of the head of the valve core is contacted with the inner surface of the conical opening, and at the moment, the top of the valve core can be exposed at the valve port.

When the vacuumizing and back flushing work is carried out, the second air pipe and the air passage are communicated with a region defined by the inner surface of the conical port, the outer surface of the head of the valve core and the upper surface of the partition plate, and air flow can enter and exit along with a channel formed by the air pipe and the air passage.

The lower surface of the bottom die is equally provided with a plurality of demoulding back-blowing devices, preferably more than 6 demoulding back-blowing devices.

After the structure is adopted, the utility model discloses beneficial effect does: the utility model has the characteristics of reasonable structural design, simple manufacturing process and the like, in the product vibration molding stage, the valve core moves upwards to seal the valve port, and the top end of the head part of the valve core at the valve port is exposed out of the bottom die, so that materials can be prevented from entering the valve port; the utility model discloses be in the same place evacuation process and blowback drawing of patterns process integration, solved the problem of product bottom surface with the die block adhesion, reduced the quality problems that product drawing of patterns in-process product was broken or internal crack leads to, improved the efficiency of product drawing of patterns.

Drawings

FIG. 1 is an enlarged schematic view of a mold stripping blowback device during vacuum-pumping of the present invention;

FIG. 2 is an enlarged schematic view of a novel mold stripping and back-blowing device used in the vibration molding stage of a product;

FIG. 3 is an enlarged schematic view of the mold stripping blowback device of the present invention when the product is demolded;

FIG. 4 is a front view of the present invention;

fig. 5 is a top view of the present invention;

wherein: 1. bottom die; 2. a cylinder; 3. a flange; 4. a partition plate; 5. a valve core; 6. a spring; 7. a first air pipe; 8. an air chamber; 9. a second air pipe; 10. an airway; 11. and (4) valve ports.

Detailed Description

As shown in fig. 1, 2, 3, 4 and 5, a demolding blowback device for a vertical vibration molding machine comprises a bottom die 1, a cylinder 2, a flange 3, a partition plate 4, a valve core 5, a spring 6, a first air pipe 7, an air chamber 8, a second air pipe 9, an air passage 10 and a valve port 11, wherein a conical opening is formed in the bottom die 1 and penetrates through the bottom die 1; the upper surface of the bottom die 1 is provided with a valve port 11; the valve port 11 is communicated with a conical port; a partition plate 4 is arranged below the bottom die 1; the partition plate 4 is in a concentric circle shape; the partition plate 4 is fixed on the lower surface of the bottom die 1 by a flange 3; the inner circle of the clapboard 4 and the conical port are positioned at the same axis position; the diameter of the inner circle of the partition plate 4 is smaller than the diameter of the opening on the lower surface of the bottom die 1; the lower surface of the partition plate 4 is provided with a cylinder 2; the cylinder 2 is a hollow cylinder with a closed bottom surface; the cylinder 2 and the conical port are positioned at the same axial center position; a valve core 5 and a spring 6 are arranged in the cylinder 2; the head of the valve core 5 is positioned in the conical opening, the head of the valve core 5 is clamped in the conical opening by the partition plate 4, and the head of the valve core 5 can only move up and down in the conical opening; the tail part of the valve core 5 is positioned in the cylinder 2; the outer surface of the tail part of the valve core 5 is provided with a spring, and the tail part of the valve core 5 is arranged into an I-shaped structure, so that the spring 6 can only stretch and deform up and down in an area enclosed by the clapboard 4 and the I-shaped structure at the tail part of the valve core 5; a gap exists between the lower surface of the tail part of the valve core 5 and the upper surface 2 of the cylinder; an opening is formed in the lower surface of the tail of the valve core 5 and one side of the position, where a hole is formed, of the upper surface 2 of the cylinder; the opening is communicated with the air chamber 8; the air chamber 8 is communicated with the first air pipe 7; an air passage 10 is arranged on one side of the conical opening; the air passage 10 is positioned inside the bottom die; the air passage 10 is communicated with the second air pipe 9.

Compressed air is blown from the first air pipe 7, the pressure of the spring 6 is smaller than that of the blown compressed air, the valve core 5 moves upwards until the side face of the head of the valve core 5 is contacted with the inner surface of the conical opening, and at the moment, the top of the valve core 5 is exposed at the valve port 11.

When the vacuumizing and back flushing work is carried out, the second air pipe 9 and the air passage 10 are communicated with the area formed by the inner surface of the conical port, the outer surface of the head of the valve core 5 and the upper surface of the partition plate 4, and air flow can enter and exit along with the channel formed by the air flow.

More than 6 demoulding blowback devices are equally arranged on the lower surface of the bottom die 1.

Step 1: in the vacuum pumping stage of the system, before the product is subjected to vibration molding, the material in the mold barrel needs to be subjected to vacuum pumping treatment, before the vacuum pumping process, compressed air is not blown into the first air pipe 7, the pressure in the first air pipe 7 is zero, the valve core 5 is in a retraction state under the action of the elastic force of the spring 6, the valve port 11 is opened at the moment, the second air pipe 9 is communicated with the valve port 11 through the air passage 10, the second air pipe 9 is communicated with the vacuum pump through an external control mechanism, the vacuum pump is started to work, the system starts to perform vacuum pumping, and the gas in the material is pumped out through the valve port 11, the air passage 10.

Step 2: after the vacuumizing process is finished, starting a product vibration forming stage, closing an external control mechanism communicated with a second air pipe 9, continuously filling compressed air into a gap formed by the lower surface of the valve core 5 and the inner surface of the air cylinder 2 through an air chamber 8 by the external control mechanism through a first air pipe 7, wherein the pressure of the compressed air is greater than that of a spring, the valve core 5 is pushed to move upwards to seal the valve port 11 until the side surface of the head of the valve core 5 is contacted with the inner surface of the conical port, and the top of the valve core 5 is exposed out of the valve port 11.

And step 3: the product finishes vibration molding, starts demoulding, the first air pipe 7 stops blowing compressed air, the pressure at the bottom of the air cylinder becomes zero, the valve core 5 is pushed back to the initial position by the spring 6, and the valve port 11 is opened. And then, horizontally placing the mold barrel, pushing the product out of the mold barrel and conveying the product to a product tray, wherein after the product is pushed out, the bottom mold 1 needs to be retracted to the bottom of the mold barrel, and at this time, the contact surface of the bottom mold 1 and the product needs to be separated. Before the process of removing the bottom die 1 begins, compressed air is blown from the second air pipe 9 and enters a gap between the upper surface of the bottom die 1 and the lower surface of a product through the air passage 10 and the valve port 11 to damage a vacuum zone formed by the upper surface of the bottom die 1 and the lower surface of the product and eliminate the suction force between the upper surface of the bottom die 1 and the lower surface of the product, so that the product is smoothly demoulded.

More than 6 demoulding back-blowing devices can be equally arranged on the bottom die, and the more than 6 demoulding back-blowing devices do the same action in the same time period, work simultaneously and stop simultaneously.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a drawing of patterns blowback device for vertical vibration molding machine, its includes die block, cylinder, flange, baffle, case, spring, first trachea, air chamber, second trachea, air flue and valve port, its characterized in that: the bottom die is provided with a conical opening penetrating through the bottom die; the upper surface of the bottom die is provided with a valve port; the valve port is communicated with the conical port; a concentric circular partition plate coaxial with the conical opening is fixed on the square flange below the bottom die; the lower surface of the partition plate is provided with a cylindrical cylinder which is coaxial with the conical opening and is closed at the bottom; a valve core with the head part positioned in the conical opening and a spring sleeved on an I-shaped structure at the tail part of the valve core are arranged in the cylinder; a gap is formed between the lower surface of the tail part of the valve core and the upper surface of the cylinder; an opening is formed in one side of the bottom end of the air cylinder; the opening is communicated with the air chamber; the air chamber is communicated with a first air pipe; an air passage is arranged on one side of the conical opening; the air passage is positioned in the bottom die; the air passage is communicated with the second air pipe.

2. The apparatus of claim 1, wherein the back-blowing unit comprises: the diameter of the inner circle of the partition plate is smaller than the diameter of the opening on the lower surface of the bottom die.

3. The apparatus of claim 1, wherein the back-blowing unit comprises: the head of the valve core is clamped in the conical opening by the partition plate, and the head of the valve core can only move up and down in the conical opening; the spring is stretched and deformed up and down in an area defined by the partition plate and the I-shaped structure at the tail part of the valve core.

4. The apparatus of claim 1, wherein the back-blowing unit comprises: more than 6 demoulding blowback devices are equally arranged on the lower surface of the bottom die.