CN114029472A

CN114029472A - Take oblique guide pillar device low pressure mould of loosing core of gradient

Info

Publication number: CN114029472A
Application number: CN202111358993.6A
Authority: CN
Inventors: 沈茂刚; 陆国明
Original assignee: Wuxi Sinan Technology Co ltd
Current assignee: Wuxi Sinan Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-02-11
Anticipated expiration: 2041-11-17
Also published as: CN114029472B

Abstract

The invention relates to a low-pressure die with a gradient inclined guide post core-pulling device, which comprises an upper die, a sand core, a lower die and an inclined guide post device which plays a role in guiding in the die opening and closing process, wherein the inclined guide post device comprises a guide post, a slide block guide block, a slide block and a core-pulling device, the slide block guide block, the slide block and the core-pulling device are arranged on the lower surface of the upper die, the guide post is arranged on the upper surface of the lower die, the slide block guide blocks are fixedly arranged at two ends of the slide block, and the slide block can move up and down along the guide post. The invention has simple structure, compact design and convenient use, and the mould drives the slide block to ensure that the loose core does not interfere with the sand core in the mould closing process and is normally drawn by drawing in the mould closing or mould opening process, and simultaneously can avoid the phenomenon of aluminum leakage caused by incomplete loose core due to the damage of the oil cylinder, improve the qualification rate of products, eliminate safety risk and reduce cost.

Description

Take oblique guide pillar device low pressure mould of loosing core of gradient

Technical Field

The invention relates to a low-pressure die with a gradient inclined guide pillar core-pulling device, and belongs to the technical field of die equipment.

Background

What traditional low pressure mould was loosed core adopts is cylinder or hydro-cylinder structure, and small-size or simple structure adopt the cylinder relatively can realize, nevertheless to the structure that the package power of loosing core is big, the power of cylinder can not reach the demand, needs the hydro-cylinder that the dynamics of using is bigger, and in continuous production process, the damage phenomenon can often appear in the hydro-cylinder, leads to aluminium liquid to fill the type in-process, because the hydro-cylinder damages not will loose core the compound die and target in place, arouses to run aluminium. The above phenomena mainly affect three aspects:

(1) loose cores are not in place, so that aluminum leakage is caused, and the safety risk is high;

(2) the oil cylinder has high damage frequency, needs frequent switching and has high cost;

(3) the loose core is not in place, so that aluminum leakage is caused, the die needs to be removed from the machine for cleaning, and the productivity is influenced.

Disclosure of Invention

The invention aims to solve the problems and provides a low-pressure die with a gradient inclined guide post core-pulling device.

The invention adopts the following technical scheme: the utility model provides a take oblique guide pillar device low pressure mould of loosing core of gradient, includes mould, psammitolite, lower mould and the oblique guide pillar device that plays the guide effect at the mould in-process that opens and shuts, oblique guide pillar device includes guide post, slider guide block, slider and looses core, slider guide block, slider and loose core install the lower surface at last mould, the guide post is installed at the lower mould upper surface, the both ends fixed mounting of slider has the slider guide block, the guide post up-and-down motion can be followed to the slider.

Further, the guide post includes five gradient changes from top to bottom, and is respectively the first straightway that is 20 with the lower mould vertical direction, the first circular arc section that the radius is 245mm, the second straightway that is 28 with the lower mould vertical direction and the second circular arc section that the radius is 245mm, the third straightway that is 30 with the lower mould vertical direction.

Furthermore, two sides of the first straight line segment, the first circular arc segment and the second straight line segment are respectively provided with a continuous bulge.

Furthermore, the height of the protrusion at the top end of the first straight line segment is 2.0mm, the height of the protrusion at the bottom end of the second straight line segment is 0.9mm, and the middle of the protrusion is in a continuous and smooth connection shape.

Furthermore, a guide limiting step is arranged on the guide post.

In the processing process, in the first stage, the core 4-4 is positioned at the upper side of the sand core 2, and the core 4-4 is required to rapidly move downwards by adopting a relatively small inclination in the first stage, so that the time is reduced, and the inclination angle of the upper end is designed to be 20 degrees;

in the second stage, the core 4-4 is continuously positioned on the upper side of the sand core 2, but the position is close to the sand core 2, so that the running speed of the core 4-4 needs to be slowed down in the section, and the section is designed to be an arc section of R245 mm;

in the third stage, the core 4-4 starts to pass through the sand core 2 at the moment, so that the core 4-4 effectively avoids the sand core 2 and is prevented from being damaged, and the slope of 28 degrees is designed after the arc of the section;

in the fourth stage, the core 4-4 slowly passes through the 1/2 body position of the sand core 2, the running speed of the core 4-4 needs to be slowed down in the stage, so that the core 4-4 safely passes through the whole body position of the sand core 2, and the stage is designed to be an arc section of R245 mm;

and in the fifth stage, the core 4-4 safely passes through the whole body position of the sand core 2, the downward running speed of the core 4-4 needs to be properly accelerated in the fifth stage, the running time is reduced, and the core pulling process can be quickly realized by designing the inclination of 30 degrees in the fifth stage.

The invention has the beneficial effects that: the guide post has the advantages of simple structure, compact design and convenient use, the sectional design of the guide post can more smoothly complete the processing process of the mold, the core pulling does not interfere with the sand core in the mold closing process or the mold opening process of the mold by driving the slide block, the core pulling is normal in the mold closing process, the aluminum leakage phenomenon caused by the incomplete core pulling due to the damage of the oil cylinder can be avoided, the qualification rate of products can be improved, the safety risk is eliminated, and the cost is reduced.

Drawings

FIG. 1 is a schematic view of the structure of the mold of the present invention.

Fig. 2 is a schematic structural diagram of the angle guide post device of the present invention.

Fig. 3 is a schematic structural view of the guide post.

Reference numerals: the mold comprises an upper mold 1, a sand core 2, a lower mold 3, an inclined guide post device 4, a guide post 4-1, a slide block guide block 4-2, a slide block 4-3, a loose core 4-4, a protrusion 4-5, a limit step 4-6, a first straight line segment 4-7, a first circular arc segment 4-8, a second straight line segment 4-9, a second circular arc segment 4-10 and a third straight line segment 4-11.

Detailed Description

The invention will be further explained and illustrated with reference to specific examples.

A low-pressure die with a gradient inclined guide post core-pulling device comprises an upper die 1, a sand core 2, a lower die 3 and an inclined guide post device 4 playing a role in guiding in the die opening and closing process; the inclined guide post device 4 comprises a guide post 4-1, a slide block guide block 4-2, a slide block 4-3 and a loose core 4-4, the slide block guide block 4-2 is fixedly installed at two ends of the slide block 4-3, the slide block 4-3 can move up and down along the guide post 4-1 under the driving of the slide block guide block 4-2, the loose core 4-4 is connected with the slide block 4-3, the slide block guide block 4-2, the slide block 4-3 and the loose core 4-4 are installed on the lower surface of the upper die 1, and the guide post 4-1 is installed on the upper surface of the lower die 3.

The guide column 4-1 is provided with a plurality of gradients, and the guide column 4-1 has five gradient changes from top to bottom, which are respectively a first straight line section 4-7 with a 20-degree angle with the vertical direction of the lower die 3, a first circular arc section 4-8 with a radius of 245mm, a second straight line section 4-9 with a 28-degree angle with the vertical direction of the lower die, a second circular arc section 4-10 with a radius of 245mm, and a third straight line section 4-11 with a 30-degree angle with the vertical direction of the lower die. Two sides of the positions of the first straight line section 4-7, the first circular arc section 4-8 and the second straight line section 4-9 are respectively provided with a continuous bulge 4-5, the height of the bulge 4-5 is designed in a decreasing mode, the height of the bulge 4-5 at the top end of the first straight line section 4-7 is 2.0mm, the height of the bulge 4-7 at the bottom end of the second straight line section 4-9 is 0.9mm, the middle of the bulge 4-5 is in a continuous and smooth connection shape, and a guide limiting step 4-6 is arranged on the guide column 4-1.

The working principle is as follows:

in the die assembly process of the die, the lower die 3 is fixed, the upper die 1 moves downwards under the driving of an oil cylinder, the slide block 4-3 moves along the guide column 4-1 and drives the core-pulling 4-4 while moving, the downward movement speed of the slide block 4-3 and the die assembly direction speed of the slide block 4-3 can be controlled by the angle of the guide column 4-1 with gradient change, the interference of the core-pulling 4-4 and a sand core is avoided in the die assembly process, and the die assembly step is stopped after the core-pulling 4-4 reaches the limit step 4-6; in the mold opening process of the mold, the lower mold 3 is fixed, the upper mold 1 moves upwards under the driving of the oil cylinder, and the slide block guide block 4-2 and the slide block 4-3 move along the guide post 4-1 with gradient change, so that the slide block guide block and the slide block 4-3 drive the core pulling 4-4 to be pulled out, and a processed product is obtained.

Claims

1. The utility model provides a take oblique guide pillar device low pressure mould of loosing core of gradient which characterized in that: comprises an upper die (1), a sand core (2), a lower die (3) and an inclined guide post device (4) which plays a role in guiding in the process of opening and closing the die, the inclined guide post device (4) comprises a guide post (4-1), a slide block guide block (4-2), a slide block (4-3) and a loose core (4-4), the slide block guide block (4-2), the slide block (4-3) and the loose core (4-4) are arranged on the lower surface of the upper die (1), the guide post (4-1) is arranged on the upper surface of the lower die (3), the two ends of the sliding block (4-3) are fixedly provided with sliding block guide blocks (4-1), and the sliding block (4-3) can move up and down along the guide post (4-1).

2. The low-pressure die with the gradient angle guide pillar core-pulling device of claim 1, is characterized in that: the guide column (4-1) comprises five gradient changes from top to bottom, and the five gradient changes are respectively a first straight line segment (4-7) with the vertical direction of the lower die (3) being 20 degrees, a first circular arc segment (4-8) with the radius of 245mm, a second straight line segment (4-9) with the vertical direction of the lower die being 28 degrees, a second circular arc segment (4-10) with the radius of 245mm, and a third straight line segment (4-11) with the vertical direction of the lower die being 30 degrees.

3. The low-pressure die with the gradient angle guide pillar core-pulling device of claim 2, is characterized in that: and continuous bulges (4-5) are respectively arranged on two sides of the positions of the first straight line section (4-7), the first circular arc section (4-8) and the second straight line section (4-9).

4. The low-pressure die with the gradient angle guide pillar core-pulling device of claim 3, is characterized in that: the height of the bulges (4-5) at the top ends of the first straight lines (4-7) is 2.0mm, the height of the bulges (4-5) at the bottom ends of the second straight lines (4-9) is 0.9mm, and the middles of the bulges (4-5) are in a continuous and smooth connection shape.

5. The low-pressure die with the gradient angle guide pillar core-pulling device of claim 1, is characterized in that: the guide post (4-1) is provided with a guide limit step (4-6).