CN110480948B

CN110480948B - Microcellular foaming injection molding mold

Info

Publication number: CN110480948B
Application number: CN201910798680.9A
Authority: CN
Inventors: 谭小红
Original assignee: Hangzhou Polytechnic
Current assignee: Jiangsu Zhixin New Energy Equipment Manufacturing Co.,Ltd.; Jinan Weiyang Technology Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2021-03-30
Anticipated expiration: 2039-08-27
Also published as: CN110480948A

Abstract

The invention discloses a microcellular foaming injection molding mold, which comprises a push rod fixing plate and a mold main body, wherein a pair of push rods are fixed on the push rod fixing plate, a plurality of balance adjusting assemblies are arranged between the push rod fixing plate and the mold main body and positioned at the outer sides of the pair of push rods, each balance adjusting assembly comprises a telescopic rod, a cylinder, an elastic assembly and a pair of adjusting assemblies, and the telescopic rod is arranged on the inner end surface of the push rod fixing plate; the cylinder is arranged on the die main body; the elastic component is positioned in the cylinder body; a pair of adjusting part installs in the barrel, and a pair of adjusting part is located the both sides of telescopic link respectively, and adjusting part is located between the end cover and the annular plate of barrel, and one side of telescopic link can be connected with the adjusting part cooperation that corresponds. The microcellular foaming injection molding mold provided by the invention adopts the structure, so that the push rod fixing plate can be stressed more evenly, the push rod can move more smoothly, and the stability of the microcellular foaming injection molding mold is improved.

Description

Microcellular foaming injection molding mold

Technical Field

The invention relates to the technical field of micro-foaming molds, in particular to a micro-porous foaming injection molding mold.

Background

Dies, various moulds and tools for obtaining the desired products by injection, blow, extrusion, die-casting or forging, smelting, stamping, etc. in industrial production, in short, a die is a tool for making shaped articles, which tool is composed of various parts, and different dies are composed of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".

The micro-foaming injection mold is a tool for producing micro-foaming plastic products and also a tool for endowing the micro-foaming plastic products with complete structures and accurate dimensions, and the micro-foaming injection molding is a processing method used when parts with complex shapes are produced in batches, and specifically, plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

Chinese patent CN201621414905.4 discloses a microcellular foam molding mold, which comprises a mold main body and a foam push rod mechanism, wherein the foam push rod mechanism comprises a press cap, a guide rod, a push rod fixing plate, a spring and a push rod, the outer circumferential surface of the guide rod is uniformly provided with clamping strips, the tops of the clamping strips are contact inclined planes, the clamping strips radially protrude out of the bottom of the press cap to form a clamping part, the tops of the guide rod extend out of a positioning rod, the positioning rod penetrates into the press cap, the bottom of the guide rod is connected with the push rod fixing plate, the guide rod is fixed on the push rod fixing plate, and two ends of the spring are; a lower template of the die main body is provided with a pressing cap hole, and the wall of the pressing cap hole is provided with a clamping groove and a guide groove.

In the patent documents, a pair of springs is arranged between a push rod fixing plate and a die main body, so that the push rod fixing plate is stressed in a balanced manner, wherein the springs are only arranged on two sides of the push rod fixing plate, and the springs are not arranged on the other two sides, so that the push rod fixing plate cannot be stressed in a balanced manner; secondly, the spring is extremely unstable in the use, and the spring easily takes place excessive deformation, also can lead to the push rod fixed plate can not the balanced atress.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a microcellular foaming injection molding mold, which solves the problem that a push rod fixing plate in the patent document can not balance stress.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a micropore foaming injection moulding mould, includes push rod fixed plate and mould main part, be fixed with a pair of push rod on the push rod fixed plate, wherein, be equipped with the balanced regulating subassembly of a plurality of between push rod fixed plate and the mould main part, a plurality of balanced regulating subassembly is located the outside of a pair of push rod, and a plurality of balanced regulating subassembly is located on the edge of push rod fixed plate, a plurality of balanced regulating subassembly can make the balanced atress of push rod fixed plate, balanced regulating subassembly includes:

the telescopic rod is arranged on the inner end face of the push rod fixing plate;

the cylinder body is arranged on the die main body, and the telescopic rod is in sliding fit with the cylinder body;

the elastic component is positioned in the cylinder body, the elastic component is arranged between the annular plate positioned in the cylinder body and the die main body, and the non-connecting end of the telescopic rod can be pressed against the elastic component;

a pair of adjusting part, a pair of adjusting part is installed in the barrel, a pair of adjusting part is located respectively the both sides of telescopic link, just adjusting part is located the end cover of barrel with between the annular plate, one side of telescopic link can be connected with the adjusting part cooperation that corresponds.

Further, the elastic assembly includes:

the rubber piece is positioned between the annular plate and the die main body, the rubber piece is in sliding fit with the barrel, and the annular retaining shoulder on the telescopic rod can be pressed against the bottom wall of the counter bore at the inner end of the rubber piece;

the base is fixedly connected to the outer end of the rubber part;

a first spring disposed between the inner end of the telescoping rod and the base;

and the disc spring is sleeved on the mounting shaft positioned on the inner end of the die main body, and the end surface of the base can be pressed on the disc spring in a supporting manner.

Furthermore, the rubber part comprises a circular table column, the counter bore is formed in the small end face of the circular table column, a through hole is formed in the bottom wall of the counter bore, the tail portion of the telescopic rod can penetrate through the through hole, a wave sleeve is arranged on the outer edge of the large end of the circular table column, the periphery of the wave sleeve is abutted against the inner wall of the cylinder body, and the inner end face of the base is fixedly matched and connected with the inner wall face of the wave sleeve.

Furthermore, the balance adjustment assembly further comprises a plurality of supporting bodies which are annularly distributed on the inner wall of the cylinder body, the supporting bodies are located outside the rubber piece, and the supporting bodies are located between the annular plate and the rubber piece.

Furthermore, the supporter includes a supporting cylinder, one end of the supporting cylinder is connected with the inner wall of the cylinder body, the inner side wall of the supporting cylinder is abutted on the outer wall of the wave sleeve, a steel ball is arranged on the inner wall of the other end of the supporting cylinder, one half of the steel ball is positioned in the supporting cylinder, and the top of the other half of the steel ball is abutted on the side wall of the circular table column.

Still further, the adjustment assembly includes:

the first gear is arranged on the mounting plate positioned in the barrel and can be meshed and connected with a plurality of first convex teeth arranged on the corresponding side of the telescopic rod;

the second gear is arranged on the mounting plate, and one side of the second gear is in meshed connection with the first gear;

one side of the sliding plate is in sliding fit with the corresponding sliding groove in the side wall of the cylinder body, a plurality of second convex teeth are arranged on the other side of the sliding plate, and the other side of the second gear is in meshed connection with the plurality of second convex teeth;

a second spring disposed between one end of the sliding plate and the annular plate;

a third spring disposed between the other end of the sliding plate and the end cap.

Furthermore, one end of the second spring is sleeved on the first guide post positioned on one end of the sliding plate, and the other end of the second spring is sleeved on the corresponding second guide post positioned on the outer end of the annular plate.

Furthermore, one end of the third spring is sleeved on a third guide post positioned on the other end of the sliding plate, and the other end of the third spring is sleeved on a corresponding fourth guide post positioned on the inner end of the end cover.

(III) advantageous effects

The invention has the beneficial effects that:

1. because a plurality of balance adjusting components are arranged between the push rod fixing plate and the die main body and are positioned on each edge of the push rod fixing plate, the push rod fixing plate can balance stress and the push rod can move smoothly;

2. because the balance adjusting component comprises the telescopic rod, the barrel, the elastic component and the pair of adjusting components, the push rod fixing plate can balance the stress more, the push rod can move more smoothly, the stability of the device is improved, and the micro-foaming product can be molded better.

Drawings

Fig. 1 is a partial cross-sectional view of the present invention.

Fig. 2 is a sectional view taken along a-a of fig. 1.

Fig. 3 is an enlarged view at I in fig. 1.

Fig. 4 is a schematic structural view of a rubber member in the elastic member of the present invention.

Fig. 5 is a schematic structural view of a support body in the elastic assembly of the present invention.

In the drawings: the push rod fixing plate 10, the die main body 20, the mounting shaft 201, the push rod 30, the telescopic rod 1, the annular blocking shoulder 11, the first convex tooth 12, the cylinder body 2, the annular plate 21, the second guide column 211, the end cover 22, the fourth guide column 221, the mounting plate 23, the sliding chute 24, the elastic component 3, the rubber piece 31, the counter bore 311, the circular truncated cone column 312, the through hole 313, the wave sleeve 314, the base 32, the guide shaft 321, the first spring 33, the disc spring 34, the adjusting component 4, the first gear 41, the second gear 42, the sliding plate 43, the second convex tooth 431, the first guide column 432, the third guide column 433, the second spring 44, the third spring 45, the supporting body 5, the supporting cylinder 51 and the steel ball 52.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

Referring to fig. 1 to 5, a microcellular foam injection mold shown in fig. 1 and 2 includes a push rod fixing plate 10 and a mold main body 20, a pair of push rods 30 is fixed on the push rod fixing plate 10, a plurality of balance adjusting assemblies are disposed between the push rod fixing plate 10 and the mold main body 20, the plurality of balance adjusting assemblies are disposed at outer sides of the pair of push rods 30, and the plurality of balance adjusting assemblies are disposed at edges of the push rod fixing plate 10, and the plurality of balance adjusting assemblies can enable the push rod fixing plate 10 to be stressed in a balanced manner, so that the push rods 30 can move smoothly, as shown in fig. 3, the balance adjusting assemblies include a telescopic rod 1, a cylinder 2, an elastic assembly 3 and a pair of adjusting assemblies 4, the telescopic rod 1 is disposed on an inner end surface of the push rod fixing plate 10, the cylinder 2 is disposed on the mold main body 20, and the telescopic rod 1 and the cylinder 2 are in, the elastic component 3 is positioned in the barrel 2, the elastic component 3 is arranged between an annular plate 21 positioned in the barrel 2 and the die main body 20, the annular plate 21 limits the elastic component 3 between the annular plate 21 and the die main body 20, a non-connecting end of the telescopic rod 1 can be pressed on the elastic component 3, a pair of adjusting components 4 are arranged in the barrel 2, the pair of adjusting components 4 are respectively positioned at two sides of the telescopic rod 1, the adjusting components 4 are positioned between an end cover 22 of the barrel 2 and the annular plate 21, the end cover 22 limits an annular retaining shoulder 11 of the telescopic rod 1 in the barrel 2, one side of the telescopic rod 1 can be connected with the corresponding adjusting components 4 in a matched manner, under the combined action of the telescopic rod 1, the barrel 2, the elastic component 3 and the pair of adjusting components 4, make push rod fixed plate 10 can balance the atress more, make push rod 30 remove more smoothly, improved this micropore foaming injection moulding mould's stability.

In this embodiment, 4 telescopic rods 1 are disposed on the long edge of the inner end surface of the push

rod fixing plate

10, and 1 telescopic rod 1 is disposed on the short edge of the inner end surface of the push rod fixing plate 10.

As shown in fig. 3, the elastic component 3 includes a rubber member 31, a base 32, a first spring 33 and a disc spring 34, the rubber member 31 is located between the annular plate 21 and the mold body 20, the rubber member 31 is slidably fitted with the barrel 2, the annular shoulder 11 can press against the bottom wall of the counterbore 311 on the inner end of the rubber member 31, the base 32 is fixedly connected to the outer end of the rubber member 31, the base 32 is arranged to increase the rigidity of the rubber member 31 and prevent the rubber member 31 from being excessively deformed, the first spring 33 is arranged between the inner end of the telescopic rod 1 and the base 32, specifically, one end of the first spring 33 is fixedly connected to the inner end of the telescopic rod 1, the other end of the first spring 33 is sleeved on a guide shaft 321 located on the inner end of the base 32, the guide shaft 321 is arranged on the bottom wall of the groove 322 on the inner end of the base 32, the disc spring 34 is sleeved on the mounting shaft 201 on the inner end of the die main body 20, and the end surface of the base 32 can be pressed against the disc spring 34.

As shown in fig. 3 and 4, the rubber member 31 includes a circular truncated cone 312, the counter bore 311 is provided on a small end face of the circular truncated cone 312, a through hole 313 is provided on a bottom wall of the counter bore 311, the tail of the telescopic rod 1 can pass through the through hole 313, a wave sleeve 314 is provided on an outer edge of a large end of the circular truncated cone 312, an outer periphery of the wave sleeve 314 abuts against an inner wall of the cylinder 2, and an inner end face of the base 32 is fixedly connected with an inner wall face of the wave sleeve 314 in a matching manner.

As shown in fig. 3, 4 and 5, the balance adjusting assembly further includes a plurality of supporting bodies 5 annularly distributed on the inner wall of the cylinder 2, the plurality of supporting bodies 5 are located outside the rubber member 31, the support body 5 is located between the annular plate 21 and the rubber member 31, the support body 5 includes a support cylinder 51, one end of the supporting cylinder 51 is connected with the inner wall of the cylinder body 2, the inner side wall of the supporting cylinder 51 is resisted on the outer wall of the wave sleeve 314, a steel ball 52 is fixed on the inner wall of the other end of the supporting cylinder 51, half of the steel ball 52 is positioned in the supporting cylinder 51, the top of the other half of the steel ball 52 abuts against the side wall of the circular table column 312, and the supporting body 5 supports the rubber piece 31, so that the rigidity of the rubber piece 31 is indirectly increased, and the rubber piece 31 is prevented from being seriously expanded outwards.

When the end of the push rod 30 is to enter the cavity of the mold body 20, the push rod fixing plate 10 needs to drive the push rod 30 to move, at this time, the first spring 33 is compressed, and when the annular retaining shoulder 11 contacts the bottom wall of the counterbore 311, a pressure effect is generated on the rubber member 31, so that the rubber member 31 is compressed, and meanwhile, the rubber member 31 and the base 32 move simultaneously, so that the disc spring 34 is compressed, thereby balancing the force on the push rod fixing plate 10, and enabling the push rod 30 to move smoothly.

As shown in fig. 2, the adjusting assembly 4 includes a first gear 41, a second gear 42, a sliding plate 43, a second spring 44 and a third spring 45, the first gear 41 is mounted on a mounting plate 23 located in the cylinder 2, the first gear 41 is capable of engaging with a plurality of first convex teeth 12 disposed on a corresponding side of the telescopic rod 1, the second gear 42 is mounted on the mounting plate 23, one side of the second gear 42 is engaged with the first gear 41, one side of the sliding plate 43 is slidably engaged with a corresponding sliding slot 24 on a side wall of the cylinder 2, a plurality of second convex teeth 431 are disposed on the other side of the sliding plate 43, the other side of the second gear 42 is engaged with a plurality of second convex teeth 431, the second spring 44 is disposed between one end of the sliding plate 43 and the annular plate 21, and specifically, one end of the second spring 44 is sleeved on the first guide post 432 on one end of the sliding plate 43, the other end of the second spring 44 is sleeved on the corresponding second guide post 211 on the outer end of the annular plate 21, the third spring 45 is arranged between the other end of the sliding plate 43 and the end cover 22, one end of the third spring 45 is sleeved on the third guide post 433 on the other end of the sliding plate 43, and the other end of the third spring 45 is sleeved on the corresponding fourth guide post 221 on the inner end of the end cover 22.

When the end of the push rod 30 is to enter the cavity of the mold body 20, the push rod fixing plate 10 is required to drive the push rod 30 to move, at this time, the first gear 41 is driven to rotate, and then the second gear 42 is driven to rotate, so that the sliding plate 43 is driven to move towards the direction close to the annular plate 21, the second spring 44 is compressed, and the third spring 45 is elongated, so that the push rod fixing plate 10 is further balanced in stress, the push rod 30 is moved smoothly, the stability of the microcellular foaming injection molding mold is improved, and the microcellular foaming product is molded better.

It should be noted that the described embodiments of the invention are only preferred ways of implementing the invention, and that all obvious modifications, which are within the scope of the invention, are all included in the present general inventive concept.

Claims

1. The utility model provides a micropore foaming injection moulding mould, includes push rod fixed plate (10) and mould main part (20), be fixed with a pair of push rod (30) on push rod fixed plate (10), a serial communication port, be equipped with a plurality of balance adjustment subassembly between push rod fixed plate (10) and mould main part (20), a plurality of balance adjustment subassembly is located the outside of a pair of push rod (30), and a plurality of balance adjustment subassembly is located on the edge of push rod fixed plate (10), a plurality of balance adjustment subassembly can make the balanced atress of push rod fixed plate (10), balance adjustment subassembly includes:

the telescopic rod (1) is arranged on the inner end face of the push rod fixing plate (10);

the barrel (2) is arranged on the die main body (20), and the telescopic rod (1) is in sliding fit with the barrel (2);

the elastic component (3) is positioned in the barrel body (2), the elastic component (3) is arranged between an annular plate (21) positioned in the barrel body (2) and the die main body (20), and the non-connecting end of the telescopic rod (1) can be pressed against the elastic component (3);

the pair of adjusting assemblies (4) are installed in the barrel body (2), the pair of adjusting assemblies (4) are respectively located on two sides of the telescopic rod (1), the adjusting assemblies (4) are located between an end cover (22) of the barrel body (2) and the annular plate (21), and one side of the telescopic rod (1) can be connected with the corresponding adjusting assemblies (4) in a matched mode;

in particular, the elastic assembly (3) comprises: the rubber piece (31) is positioned between the annular plate (21) and the die main body (20), the rubber piece (31) is in sliding fit with the barrel (2), and the annular retaining shoulder (11) on the telescopic rod (1) can be pressed against the bottom wall of the counter bore (311) at the inner end of the rubber piece (31); the base (32), the said base (32) is connected fixedly on the outer end of the said rubber component (31); a first spring (33), the first spring (33) being arranged between the inner end of the telescopic rod (1) and the base (32); the disc spring (34), the disc spring (34) is sleeved on the mounting shaft (201) on the inner end of the die main body (20), the end face of the base (32) can be pressed against the disc spring (34), the rubber part (31) comprises a circular table column (312), a counter bore (311) is formed in the small end face of the circular table column (312), a through hole (313) is formed in the bottom wall of the counter bore (311), the tail part of the telescopic rod (1) can penetrate through the through hole (313), a wave sleeve (314) is arranged on the outer edge of the large end of the circular table column (312), the periphery of the wave sleeve (314) is abutted against the inner wall of the barrel body (2), the inner end face of the base (32) is fixedly matched and connected with the inner wall face of the wave sleeve (314), the balance adjusting assembly further comprises a plurality of supporting bodies (5) which are annularly distributed on the inner wall of the barrel body (2), a plurality of supporting bodies (5) are positioned outside the rubber piece (31), and the supporting bodies (5) are positioned between the annular plate (21) and the rubber piece (31).

2. The microcellular foaming injection molding mold according to claim 1, wherein the supporting body (5) comprises a supporting cylinder (51), one end of the supporting cylinder (51) is connected with the inner wall of the barrel body (2), the inner side wall of the supporting cylinder (51) abuts against the outer wall of the wave sleeve (314), a steel ball (52) is arranged on the inner wall of the other end of the supporting cylinder (51), one half of the steel ball (52) is located in the supporting cylinder (51), and the top of the other half of the steel ball (52) abuts against the side wall of the circular table column (312).

3. Microcellular foam injection molding mold according to claim 2, wherein said adjusting assembly (4) comprises:

the first gear (41), the first gear (41) is installed on the installation plate (23) in the barrel body (2), and the first gear (41) can be meshed and connected with a plurality of first convex teeth (12) arranged on the corresponding side of the telescopic rod (1);

a second gear (42), wherein the second gear (42) is installed on the installation plate (23), and one side of the second gear (42) is in meshed connection with the first gear (41);

one side of the sliding plate (43) is in sliding fit with the corresponding sliding groove (24) in the side wall of the cylinder body (2), a plurality of second convex teeth (431) are arranged on the other side of the sliding plate (43), and the other side of the second gear (42) is in meshed connection with the plurality of second convex teeth (431);

a second spring (44), the second spring (44) being disposed between one end of the sliding plate (43) and the annular plate (21);

a third spring (45), the third spring (45) being disposed between the other end of the sliding plate (43) and the end cap (22).

4. A microcellular foam injection molding mold according to claim 3, wherein one end of said second spring (44) is fitted over a first guide post (432) located on one end of said sliding plate (43), and the other end of said second spring (44) is fitted over a corresponding second guide post (211) located on the outer end of said annular plate (21).

5. A microcellular foam injection molding mold according to claim 4, wherein one end of the third spring (45) is fitted over a third guide post (433) located on the other end of the sliding plate (43), and the other end of the third spring (45) is fitted over a corresponding fourth guide post (221) located on the inner end of the end cap (22).