CN110861265A

CN110861265A - Plastic mold capable of reducing demolding friction and used for automobile part production

Info

Publication number: CN110861265A
Application number: CN201911107356.4A
Authority: CN
Inventors: 朱道庭
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-03-06

Abstract

The invention discloses a plastic mould capable of reducing demoulding friction for automobile accessory production, which comprises a lower mould seat plate, a reset spring, a demoulding thimble, an upper mould seat plate and a hydraulic rod, wherein the middle part of the lower mould seat plate is provided with a through hole, a pouring mold core is arranged above a mold core mounting plate, a top plate is arranged above the middle part of the lower mould seat plate, the reset spring is arranged between the thimble mounting plate and the mold core mounting plate, guide pillars are arranged on the left side and the right side of the mold core mounting plate, a pouring mold cavity is arranged on the lower surface of the mold cavity plate, and the pouring mold core is arranged in the pouring mold. This frictional auto-parts for production plastic mold of reducible drawing of patterns is provided with the die cavity board of split design, and at the in-process that uses, two die cavity boards of in close contact can separate through the hydraulic stem, and spout and slider are effectual leads and spacing simultaneously, and then make the separation of pouring die cavity to made things convenient for taking of working of plastics.

Description

Plastic mold capable of reducing demolding friction and used for automobile part production

Technical Field

The invention relates to the technical field of automobile part injection molds, in particular to a plastic mold for automobile part production, which can reduce demolding friction.

Background

In the process of production and manufacture of automobile parts, a large amount of processing equipment such as a cutting machine, a punch press, an injection mold, a pouring mold and the like is used as an injection mold, demolding of a product is required after injection molding, demolding resistance and demolding friction force are generated between the product and the mold, the traditional solution is to polish the surface of a cavity and the surface of an injection runner to ensure that the cavity and the injection runner are smoother and better, so that the friction force and the resistance generated during demolding are reduced, however, the measure has high requirements on processing precision, is extremely time-consuming to polish and low in efficiency, and meanwhile, in the process of injection molding, molten liquid sprayed out by the injection molding machine corrodes the cavity and the injection runner, so that the mold must be polished regularly, the time is extremely time-consuming, when the product is taken out after being molded and is taken out, if uneven force is applied, the product is extremely easy to scratch the surface of the product, and harder molten liquid sprayed out by the injection molding machine during injection molding, not only scrape its surface easily, can the certain probability block up the runner of moulding plastics moreover, cause the plug inconvenient to take out, take out simultaneously and must scrape the flower with the runner, to sum up, present auto-parts injection mold still has certain problem.

We have therefore proposed a plastic mold for automobile parts production which can reduce the friction of demolding in order to solve the problems set forth above.

Disclosure of Invention

The invention aims to provide a plastic mould for producing automobile parts, which can reduce demoulding friction and solve the problems of large demoulding friction and large demoulding resistance of the existing automobile part injection mould in the market in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a plastic mould capable of reducing demoulding friction for automobile accessory production comprises a lower mould seat plate, a reset spring, a demoulding thimble, an upper mould seat plate and a hydraulic rod, wherein a through hole is formed in the middle of the lower mould seat plate, cushion blocks and a mould core mounting plate are mounted on the left side and the right side of the upper part of the lower mould seat plate through bolts, the mould core mounting plate is arranged above the cushion blocks, a pouring mould core is mounted above the mould core mounting plate, a top plate is arranged above the middle of the lower mould seat plate, the thimble mounting plate is mounted on the top of the top plate through bolts, the demoulding thimble is mounted in the middle of the thimble mounting plate, the reset spring is arranged between the thimble mounting plate and the mould core mounting plate, guide pillars are mounted on the left side and the right side of the mould core mounting plate, a sliding groove is formed in the lower surface, the utility model discloses a mould, including the upper die base plate, the lower mould base plate is provided with the die cavity board, and the lower surface of counter bore is inlayed and is had the holding ring, the below of upper die base plate is provided with the die cavity board, and the surface bolt on duty of die cavity board installs the slider to the slider is installed in the inside of spout, the pouring die cavity has been seted up to the lower surface of die cavity board, and the inside of pouring die cavity is provided with the pouring core, the mount pad is installed to the equal bolt in the lower surface left and right sides of upper die base plate, and the lower surface bolt of mount pad installs the hydraulic stem to the expansion end of.

Preferably, the width between the left side and the right side of the casting core is smaller than the width between the demoulding thimbles on the left side and the right side of the casting core, the casting core is perpendicular to the core mounting plate, and the center line of the casting core is coincident with the center line of the core mounting plate.

Preferably, the guide pin bushing includes inner tube, outer tube, mounting groove and spin, and the outside screw mounting of inner tube has the outer tube to all seted up the mounting groove between inner tube and the outer tube, the internally mounted of mounting groove has the spin simultaneously, and the spin is angle settings such as the central line about the inner tube moreover, and the diameter of spin is greater than the minimum aperture of mounting groove on the inner tube.

Preferably, the sliding grooves are symmetrically designed about the central line of the upper die seat plate, and the number of the sliding grooves is 2.

Preferably, the center lines of the counter bore, the pouring gate and the upper die base plate are overlapped, the counter bore and the positioning ring form a dismounting structure, and the upper height and the lower height of the positioning ring are greater than the depth of the counter bore.

Preferably, the sprue gate is designed to be of a concave arc structure, the lower opening of the sprue gate is aligned with the casting cavity, and the lower surface of the sprue gate is flush with the lower surface of the upper die base plate.

Preferably, the cavity plates are symmetrically provided with 2 about the upper die base plate, guide sleeves are symmetrically arranged on the cavity plates, guide columns are arranged inside the guide sleeves, and the cavity plates form a sliding structure through hydraulic rods, sliding blocks and sliding grooves.

Preferably, the sliding block is in sliding connection with the sliding groove, and the sliding block is designed in a T-shaped structure.

Preferably, the mounting seat is of a T-shaped structure, 2 mounting seats are symmetrically arranged on the center line of the upper die seat plate, and 2 hydraulic rods are symmetrically mounted on the mounting seats.

Compared with the prior art, the invention has the beneficial effects that: the plastic mould for producing the automobile parts can reduce demoulding friction;

1. the split design type cavity plate is arranged, in the using process, two closely contacted cavity plates can be separated through the hydraulic rod, and meanwhile, the sliding groove and the sliding block effectively conduct guiding and limiting, so that the casting cavity is separated, the plastic piece is convenient to take, the casting condensate is prevented from blocking a runner on the casting cavity, the demoulding resistance is reduced, and the friction force during demoulding is reduced;

2. the guide sleeve is arranged, the rolling balls are arranged in the guide sleeve at equal angles, the guide sleeve is in contact with the guide pillar through the rolling balls, surface contact is replaced by point contact, friction force between the guide pillar and the guide sleeve is greatly reduced, and then friction force of demoulding is further reduced.

Drawings

FIG. 1 is a schematic view of the main sectional structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic bottom view of the pouring cavity and cavity plate of the present invention;

FIG. 4 is a schematic cross-sectional view of the guide sleeve according to the present invention;

FIG. 5 is a schematic view of the bottom structure of the guide sleeve according to the present invention;

FIG. 6 is a bottom view of the upper die plate of the present invention;

FIG. 7 is a schematic top view of a cavity plate according to the present invention.

In the figure: 1. a lower die base plate; 2. a through hole; 3. cushion blocks; 4. a core mounting plate; 5. casting a mold core; 6. a top plate; 7. a thimble mounting plate; 8. a return spring; 9. demoulding thimble; 10. a guide post; 11. a guide sleeve; 111. an inner tube; 112. an outer tube; 113. mounting grooves; 114. rolling a ball; 12. an upper die base plate; 13. a chute; 14. a counter bore; 15. a positioning ring; 16. a pouring gate; 17. a cavity plate; 18. a slider; 19. pouring a cavity; 20. a mounting seat; 21. a hydraulic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a plastic mould capable of reducing demoulding friction for automobile accessory production comprises a lower mould base plate 1, a through hole 2, a cushion block 3, a mould core mounting plate 4, a pouring mould core 5, a top plate 6, an ejector pin mounting plate 7, a reset spring 8, a demoulding ejector pin 9, a guide pillar 10, a guide sleeve 11, an upper mould base plate 12, a sliding chute 13, a counter bore 14, a positioning ring 15, a pouring gate 16, a mould cavity plate 17, a sliding block 18, a pouring mould cavity 19, a mounting seat 20 and a hydraulic rod 21, wherein the through hole 2 is formed in the middle of the lower mould base plate 1, the cushion block 3 and the mould core mounting plate 4 are respectively mounted on the left side and the right side above the lower mould base plate 1 through bolts, the mould core mounting plate 4 is arranged above the cushion block 3, the pouring mould core 5 is mounted above the mould core mounting plate 4, the top plate 6 is arranged above the lower mould base plate 1, the, a return spring 8 is arranged between the thimble mounting plate 7 and the core mounting plate 4, guide posts 10 are arranged on the left side and the right side of the core mounting plate 4, a sliding groove 13 is arranged on the lower surface of the upper die base plate 12, a counter bore 14 is arranged in the middle of the upper surface of the upper die base plate 12, a pouring gate 16 is arranged in the middle of the counter bore 14, a positioning ring 15 is embedded in the counter bore 14, a cavity plate 17 is arranged below the upper die base plate 12, a sliding block 18 is arranged on the working surface of the cavity plate 17 through bolts, the sliding block 18 is arranged in the sliding groove 13, a pouring cavity 19 is arranged on the lower surface of the cavity plate 17, a pouring core 5 is arranged in the pouring cavity 19, mounting seats 20 are arranged on the left side and the right side of the lower surface of the upper die base plate 12 through bolts, hydraulic rods 21 are arranged on the lower surfaces of, the surface of the cavity plate 17 is embedded with a guide sleeve 11.

The width between the left side and the right side of the casting mold core 5 is smaller than the width between the demoulding ejector pins 9 on the left side and the right side, the casting mold core 5 is perpendicular to the mold core mounting plate 4, the central line of the casting mold core 5 is coincident with the central line of the mold core mounting plate 4, the demoulding ejector pins 9 are prevented from contacting with the casting mold core 5 through the structural design, and the safe use of the device is guaranteed.

Guide pin bushing 11 includes inner tube 111, outer tube 112, mounting groove 113 and spin 114, and the outer tube 112 is installed to the outside screw of inner tube 111, and mounting groove 113 has all been seted up between inner tube 111 and the outer tube 112, the internally mounted of mounting groove 113 has spin 114 simultaneously, and spin 114 is angle setting such as the central line about inner tube 111, and the diameter of spin 114 is greater than the minimum aperture of mounting groove 113 on the inner tube 111, the design of above-mentioned structure, adopt the point contact to replace the face contact, the frictional force between guide pin bushing 11 and the guide pillar 10 has been reduced, the practicality of device has been increased.

The spout 13 is designed about the central line symmetry of last die holder board 12, and spout 13 is provided with 2, and the design of above-mentioned structure makes things convenient for subsequent use.

The central lines of the counter bore 14, the pouring gate 16 and the upper die base plate 12 coincide with each other, the counter bore 14 and the positioning ring 15 form a dismounting structure, the upper and lower heights of the positioning ring 15 are greater than the depth of the counter bore 14, the structure is designed, the installation of the device and an injection molding machine is facilitated, and the convenience and the practicability of the device are improved.

Sprue 16 is the design of indent arc structure, and sprue 16's under shed is aligned with pouring cavity 19 to the lower surface of sprue 16 and the mutual parallel and level of lower surface of cope match-plate pattern 12, the design of above-mentioned structure has guaranteed that the nozzle of injection molding machine can effectually contact with the device, has guaranteed the normal flow of plastics of melting form simultaneously.

Cavity board 17 is provided with 2 about last mold base plate 12 symmetry, and the symmetry is provided with guide pin bushing 11 on the cavity board 17, and the inside of guide pin bushing 11 is provided with guide pillar 10, cavity board 17 passes through hydraulic stem 21 simultaneously, slider 18 and spout 13 constitute sliding construction, the design of above-mentioned structure, make the device can be separately with pouring die cavity 19 after the demolding, thereby very big reduction the demolding frictional force between injection molding and the pouring die cavity 19, thereby the damage on injection molding surface has been avoided, very big practicality that has increased the device.

The slide block 18 is in sliding connection with the sliding groove 13, the slide block 18 is in a T-shaped structural design, and the slide block 18 and the cavity plate 17 are effectively limited and fixed through the structural design.

The mount pad 20 is "T" font structure, and the center line symmetry of mount pad 20 about last die holder board 12 is provided with 2 to 2 hydraulic stem 21 are installed to the symmetry on the mount pad 20, and the design of above-mentioned structure has guaranteed the steady of power.

The working principle is as follows: in using the plastic mold for automobile parts production which can reduce the friction of mold release, first, as shown in fig. 1-2, the device is mounted inside the injection molding machine through the lower mold base plate 1 and the upper mold base plate 12, and the positioning ring 15 inside the counterbore 14 effectively positions the device, thereby starting to be used.

In the using process, as shown in fig. 1, injection molding is performed through a nozzle of an injection machine, so that a plastic solution enters a casting cavity 19 through a pouring port 16, thereby completing casting, after shaping and cooling, as shown in fig. 1-5, an upper die and a lower die of a die are separated, so that the guide pillar 10 slides inside the guide sleeve 11, and then the rolling ball 114 inside the guide sleeve 11 is in contact with the guide pillar 10, so that friction is reduced, and die parting of the die is facilitated.

After the guide post 10 is separated from the guide sleeve 11, as shown in fig. 1-3 and fig. 6-7, the hydraulic rod 21 on the mounting base 20 is started, so that the hydraulic rod 21 drives the cavity plate 17 to slide under the action of the sliding groove 13 and the sliding block 18, and the pouring cavity 19 is separated, thereby facilitating taking of the injection molding piece in the pouring cavity 19 and reducing the friction force when the injection molding piece is stripped.

Those not described in detail in this specification are within the skill of the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a plastic mold is used in auto-parts production of reducible drawing of patterns friction, includes lower mould bedplate (1), reset spring (8), demoulding thimble (9), cope match-plate pattern board (12) and hydraulic stem (21), its characterized in that: the mold is characterized in that a through hole (2) is formed in the middle of the lower mold base plate (1), cushion blocks (3) and a core mounting plate (4) are mounted on the left side and the right side above the lower mold base plate (1) through bolts, the core mounting plate (4) is arranged above the cushion blocks (3), a pouring core (5) is mounted above the core mounting plate (4), a top plate (6) is arranged above the middle of the lower mold base plate (1), a thimble mounting plate (7) is mounted on the top of the top plate (6) through bolts, a demolding thimble (9) is mounted in the middle of the thimble mounting plate (7), a reset spring (8) is arranged between the thimble mounting plate (7) and the core mounting plate (4), guide pillars (10) are mounted on the left side and the right side of the core mounting plate (4), a sliding groove (13) is formed in the lower surface of the upper mold base plate (12), and, and pouring gate (16) have been seted up in the middle part of counter bore (14), the inside of counter bore (14) is inlayed and is had holding ring (15), the below of going up die holder board (12) is provided with die cavity board (17), and the surface bolt on duty of die cavity board (17) installs slider (18) to slider (18) are installed in the inside of spout (13), pouring die cavity (19) have been seted up to the lower surface of die cavity board (17), and the inside of pouring die cavity (19) is provided with pouring core (5), mount pad (20) are installed to the equal bolt in the lower surface left and right sides of going up die holder board (12), and the lower surface bolt of mount pad (20) installs hydraulic stem (21) to the expansion end of hydraulic stem (21) runs through mount pad (20) and is connected with die cavity board (17), the surface inlay of die cavity board (17) has guide pin bushing (11).

2. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: the width between the left side and the right side of the casting mold core (5) is smaller than the width between the demoulding thimbles (9) on the left side and the right side, the casting mold core (5) is perpendicular to the mold core mounting plate (4), and the central line of the casting mold core (5) is superposed with the central line of the mold core mounting plate (4).

3. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: guide pin bushing (11) include inner tube (111), outer tube (112), mounting groove (113) and spin (114), and the outside screw mounting of inner tube (111) has outer tube (112), and mounting groove (113) have all been seted up between inner tube (111) and outer tube (112), the internally mounted of mounting groove (113) has spin (114) simultaneously, and spin (114) are angle setting such as the central line about inner tube (111), and the diameter of spin (114) is greater than the minimum aperture of mounting groove (113) on inner tube (111).

4. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: the sliding grooves (13) are symmetrically designed about the central line of the upper die base plate (12), and 2 sliding grooves (13) are arranged.

5. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: the center lines of the counter bore (14), the pouring port (16) and the upper die base plate (12) are overlapped, the counter bore (14) and the positioning ring (15) form a disassembly structure, and the upper height and the lower height of the positioning ring (15) are greater than the depth of the counter bore (14).

6. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: the pouring gate (16) is designed into a concave arc structure, the lower opening of the pouring gate (16) is aligned with the pouring cavity (19), and the lower surface of the pouring gate (16) is flush with the lower surface of the upper die base plate (12).

7. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: the die cavity plate (17) is symmetrically provided with 2 die cavity plates (17) relative to the upper die base plate (12), guide sleeves (11) are symmetrically arranged on the die cavity plates (17), guide columns (10) are arranged inside the guide sleeves (11), and the die cavity plates (17) form a sliding structure through hydraulic rods (21), sliding blocks (18) and sliding grooves (13).

8. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: the sliding block (18) is in sliding connection with the sliding groove (13), and the sliding block (18) is designed in a T-shaped structure.

9. The plastic mold for producing automobile parts, capable of reducing the friction of demolding according to claim 1, wherein: the mounting seat (20) is of a T-shaped structure, 2 mounting seats (20) are symmetrically arranged on the center line of the upper die seat plate (12), and 2 hydraulic rods (21) are symmetrically mounted on the mounting seats (20).