CN219294600U

CN219294600U - Flip-chip die convenient to take off material

Info

Publication number: CN219294600U
Application number: CN202320070928.1U
Authority: CN
Inventors: 曹宏斌; 金浩; 王桂平
Original assignee: Suzhou Hongguangxing Electronic Technology Co ltd
Current assignee: Suzhou Hongguangxing Electronic Technology Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-07-04
Anticipated expiration: 2033-01-10

Abstract

The utility model belongs to the technical field of injection molds, and relates to a flip-chip mold convenient for stripping, which comprises a front mold provided with a valve needle type hot runner and a rear mold positioned at the opposite position of the front mold, wherein the front mold comprises a front mold seat, a front mold plate and a front mold core which are sequentially arranged, the rear mold comprises a rear mold core which is opposite to the front mold core, a runner outlet of the valve needle type hot runner is communicated with a cavity formed by the front mold core and the rear mold core, an ejector pin plate which moves up and down is arranged between the front mold seat and the front mold plate, the cavity is provided with four side edges, the ejector pin plate is connected with a plurality of oblique stripping mechanisms distributed around the runner outlet of the valve needle type hot runner, and each side edge of the cavity at least corresponds to one oblique stripping mechanism. The inclined top in the inclined stripping mechanism is a part of the wall surface of the cavity in a retracted state, and after injection molding is finished, the inclined top can be retracted while descending, so that the side edge of a product can have enough deformation space to be stripped from the front mold core, and stripping is facilitated.

Description

Flip-chip die convenient to take off material

Technical Field

The utility model relates to the technical field of injection molds, in particular to a flip-chip mold convenient for stripping.

Background

The injection mold is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions. Injection molding is a process used in mass production of parts of complex shape. Specifically, the heated and melted plastic is injected into a die cavity under high pressure by an injection molding machine, and a formed product is obtained after cooling and solidification.

The injection mold always has one mold surface with glue feeding points for molding the inner side of the product and the other mold for molding the outer surface of the product. After injection molding, the injected stub bar is connected to the inner side surface, and the stub bar solidified after mold opening is disconnected, so that the appearance is not affected even if the stub bar exists because the inner side surface is not exposed. Because of the appearance requirement of the product, some injection molds need to arrange the glue feeding mechanism and the ejection mechanism on the same surface of the mold, and the mold is called as a pouring mold, and the design difficulty of the pouring mold is compact in structure. Some of the cavity of the inverted mold is of a concave-convex structure, and after the product is molded, the product is tightly packed on the mold core at one side of the glue feeding, so that the material is inconvenient to take off.

Chinese patent CN 201821065094.0 discloses a flip-chip injection mold, in which the gate is located on the upper mold, but the stripper mechanism is located on the lower mold, which does not meet the requirements of feeding glue and ejecting out on the same surface of the mold.

Chinese patent CN201621232131.3 discloses a flip-chip glue feeding system for injection mold, which aims at injection products with relatively large structure, and has a large space in the fixed mold, which is not suitable for small products.

It is therefore necessary to develop a flip-chip die to achieve the stripping.

Disclosure of Invention

The utility model mainly aims to provide a flip-chip die which is convenient for stripping, and can facilitate stripping of injection products.

The utility model realizes the aim through the following technical scheme: the utility model provides a flip-chip mould convenient to take off material, includes the front mould that is equipped with needle formula hot runner and is located the back mould of front mould relative position, the front mould is including the front mould base that sets gradually, preceding template and front mould benevolence, the back mould include with the back mould benevolence that front mould benevolence position is relative, the runner export intercommunication of needle formula hot runner front mould benevolence with in the die cavity that back mould benevolence constitutes, the front mould base with be equipped with the thimble board of upper and lower activity between the front mould board, the die cavity has four sides, the thimble board is connected with around a plurality of oblique material mechanisms that take off of runner export distribution of needle formula hot runner, every side of die cavity corresponds at least one oblique material mechanism that takes off, oblique material mechanism includes oblique passing the front mould oblique top of front mould benevolence, the oblique top of front mould has the oblique top of one side of die cavity, the complete die cavity internal surface is pieced together to the oblique top with front mould benevolence.

Specifically, the oblique stripping mechanism comprises a guide block connected to the ejector plate, a horizontal guide groove is formed below the guide block, the upper portion of the front mold oblique ejection is a rod portion obliquely penetrating through the front mold plate, and the tail end of the rod portion is provided with a horizontal guide portion matched with the horizontal guide groove.

Specifically, the thimble plate is connected with a plurality of thimbles staggered with the inclined stripping mechanism.

Specifically, both sides of the ejector pin plate are hung on the front die holder through a plurality of front die cylinders, the cylinder body of the front die cylinders is contacted with the ejector pin plate, and the driving shaft of the front die cylinders is connected with the front die holder.

Specifically, a plurality of guide posts penetrating through the ejector plate are connected between the front die holder and the front die plate.

Specifically, a plurality of cavities are arranged between the front die and the rear die, and the valve needle type hot runner is provided with runner outlets corresponding to the cavities one by one.

The technical scheme of the utility model has the beneficial effects that:

the inclined stripping mechanism is compactly arranged in the front die, and the feeding of the valve needle type hot runner is not affected. The inclined top in the inclined stripping mechanism is a part of the wall surface of the cavity in a retracted state, and after injection molding is finished, the inclined top can be retracted while descending, so that the side edge of the product can have enough deformation space to be stripped from the front mold core, and stripping is facilitated.

Drawings

FIG. 1 is an overall view of an embodiment of an inverted mold;

FIG. 2 is a bottom view of the front mold;

FIG. 3 is a sectional view of step A-A of FIG. 2;

fig. 4 is a top view of the rear mold.

The figures represent the numbers:

1-front mould, 11-valve needle type hot runner, 111-runner outlet, 12-front mould base, 13-front mould plate, 131-front mould core, 14-ejector pin plate, 141-ejector pin, 15-oblique stripping mechanism, 151-front mould oblique ejection, 1511-oblique ejection, 1512-rod part, 152-guide block, 1521-horizontal guide groove, 16-front mould oil cylinder and 17-guide column;

2-back mould, 21-back mould core.

Detailed Description

The present utility model will be described in further detail with reference to specific examples.

Examples:

as shown in fig. 1 to 4, the flip-chip die convenient for stripping comprises a front die 1 provided with a valve needle type hot runner 11 and a rear die 2 positioned at the opposite position of the front die 1, wherein the front die 1 comprises a front die holder 12, a front die plate 13 and a front die core 131 which are sequentially arranged, the rear die 2 comprises a rear die core 21 opposite to the front die core 131, a runner outlet 111 of the valve needle type hot runner 11 is communicated with a cavity formed by the front die core 131 and the rear die core 21, a top needle plate 14 which moves up and down is arranged between the front die holder 12 and the front die plate 13, the cavity is provided with four sides, the top needle plate 14 is connected with a plurality of inclined stripping mechanisms 15 distributed around the runner outlet 111 of the valve needle type hot runner 11, each side of the cavity at least corresponds to one inclined stripping mechanism 15, the inclined stripping mechanism 15 comprises a front die inclined top 151 obliquely penetrating through the front die plate 13, the front die inclined top 151 is provided with an inclined top 1511 abutted against one side of the cavity, and the inclined top 1511 and the front die core 121 is spliced to form an integral cavity inner surface. The inclined stripping mechanism 15 is compactly arranged in the front mould 1, and does not influence the feeding of the valve needle type hot runner 11. The inclined top 1511 in the inclined stripping mechanism 15 is a part of the cavity wall surface in the retracted state, after injection molding is completed, the inclined top 1511 can be retracted while descending, so that the side edge of the product can have enough deformation space to be stripped from the front mold core 131, and stripping is facilitated.

As shown in fig. 3, the oblique stripping mechanism 15 includes a guide block 152 connected to the ejector plate 14, a horizontal guide groove 1521 is provided below the guide block 152, the upper portion of the front mold oblique top 151 is a rod portion 1512 passing obliquely through the front mold plate 13, and a horizontal guide portion (not labeled) matching with the horizontal guide groove 1521 is provided at the end of the rod portion 1512. The rod 1512 moves only obliquely under the guide of the front template 13, and when the guide block 152 moves up and down along with the ejector plate 14, the horizontal guide portion receives the action of the horizontal guide groove 1521 to transfer the up-down movement into the oblique movement.

As shown in fig. 2 and 3, the ejector plate 13 is connected with a plurality of ejector pins 131 which are staggered from the inclined stripping mechanism 15. The ejector pins 131 act on the product molded in the cavity, and eject the product near the middle part while the inclined stripping mechanism 15 moves, so as to complete stripping.

As shown in fig. 1 to 3, both sides of the ejector plate 13 are hung on the front die holder 12 through a plurality of front die cylinders 16, the cylinder bodies of the front die cylinders 16 contact the ejector plate 14, and the driving shafts of the front die cylinders 16 are connected with the front die holder 12. The cylinder body part of the front mould cylinder 16 is arranged below, so that the front mould cylinder can be clung to the side of the front mould 1, and the problem of protruding outside is avoided.

As shown in fig. 3, a plurality of guide posts 17 penetrating through the ejector plate 14 are connected between the front die holder 12 and the front die plate 13. The distance between the front die holder 12 and the front die plate 13 is fixed, and the guide posts 17 are arranged perpendicular to the front die holder and the front die plate, so that the ejector plate 14 can be guided to move along the up-down direction, and the problem of clamping is avoided.

As shown in fig. 2 and 4, a plurality of cavities are provided between the front mold 1 and the rear mold 2, and the needle-type hot runner 11 has runner outlets 111 corresponding to the cavities one by one. Thus, the inverted die can form a plurality of products at one time, and the manufacturing efficiency is doubled.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. The utility model provides a flip-chip mould convenient to take off material, includes the front mould that is equipped with needle formula hot runner and is located the back mould of front mould relative position, the front mould is including the front mould base that sets gradually, preceding template and front mould benevolence, the back mould include with the back mould benevolence that front mould benevolence position is relative, the runner export intercommunication of needle formula hot runner front mould benevolence with in the die cavity that back mould benevolence constitutes, the front mould base with be equipped with the ejector pin board of upper and lower activity between the front mould board, its characterized in that: the cavity is provided with four sides, the ejector pin plate is connected with a plurality of oblique stripping mechanisms distributed around the runner outlet of the valve needle type hot runner, each side of the cavity at least corresponds to one oblique stripping mechanism, each oblique stripping mechanism comprises a front mold oblique top obliquely penetrating through the front mold plate, the front mold oblique top is provided with an oblique top part abutted against one side of the cavity, and the oblique top part and the front mold insert are spliced to form the complete cavity inner surface.

2. The flip-chip die for facilitating stripping of materials according to claim 1, wherein: the oblique stripping mechanism comprises a guide block connected to the ejector plate, a horizontal guide groove is formed below the guide block, the upper portion of the front die obliquely penetrates through the rod portion of the front die plate, and the tail end of the rod portion is provided with a horizontal guide portion matched with the horizontal guide groove.

3. The flip-chip die for facilitating stripping of materials according to claim 1, wherein: the thimble plate is connected with a plurality of thimbles staggered with the inclined stripping mechanism.

4. The flip-chip die for facilitating stripping of materials according to claim 1, wherein: the two sides of the ejector pin plate are hung on the front die holder through a plurality of front die cylinders, the cylinder body of each front die cylinder is contacted with the ejector pin plate, and the driving shaft of each front die cylinder is connected with the front die holder.

5. The flip-chip die for facilitating stripping of materials according to claim 1, wherein: a plurality of guide posts penetrating through the ejector plate are connected between the front die holder and the front die plate.

6. The flip-chip die for facilitating stripping of materials according to claim 1, wherein: and a plurality of cavities are arranged between the front die and the rear die, and the valve needle type hot runner is provided with runner outlets corresponding to the cavities one by one.