CN119502274A

CN119502274A - Inner-shrink core-pulling injection mold

Info

Publication number: CN119502274A
Application number: CN202411881187.0A
Authority: CN
Inventors: 何志敏; 汤云云; 凡仁望
Original assignee: Suzhou Lidou Moulding Technology Co ltd
Current assignee: Suzhou Lidou Moulding Technology Co ltd
Priority date: 2024-12-19
Filing date: 2024-12-19
Publication date: 2025-02-25

Abstract

The invention relates to the technical field of injection molds, in particular to an inward-shrinkage type core-pulling injection mold which comprises a fixed mold plate, wherein a lower mold core and an upper mold core are arranged above the fixed mold plate, a molding cavity for products is reserved between the lower mold core and the upper mold core, a demolding assembly is arranged on one side of the molding cavity, an inward-pulling assembly is arranged on the other side of the molding cavity, the inward-pulling assembly comprises a first fixing seat fixedly connected with the fixed mold plate, a sliding assembly is connected onto the first fixing seat in a sliding manner, an inner core assembly is arranged on one side, close to the molding cavity, of the sliding assembly, and a pull rod for driving the inner core assembly to be far away from the molding cavity is arranged on the first fixing seat and the sliding assembly.

Description

Inward-shrinking type core-pulling injection mold

Technical Field

The invention belongs to the field of injection mold supporting seats, and particularly relates to an inward-shrinking type core-pulling injection mold.

Background

When the novel energy quick-charging gun shell is produced, a plurality of inversions exist in the shape of the quick-charging gun shell, certain characteristics on a product can interfere in a demolding direction in a mold opening process, a mold is required to be pulled away from the product before the product is taken out, the method is called core pulling, the existing inward shrinkage type core pulling injection mold is required to be provided with an ejection cylinder below the mold to eject the product during use, the use requirement is high, the structure is not compact enough, and the manufacturing cost is too high, so that the inward shrinkage type core pulling injection mold is required to be designed to solve the problems.

Disclosure of Invention

In order to solve the technical problems, the invention provides a retracted core-pulling injection mold, which solves the problems that the existing core-pulling injection mold in the market, which is proposed in the background technology, mostly adopts a cylinder to push up, and has high use requirement and high cost.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

the utility model provides an injection mold of loosing core, includes the fixed die plate, the fixed die plate top is equipped with lower mould benevolence and goes up mould benevolence, the lower mould benevolence with go up the shaping chamber of leaving the product between the mould benevolence, shaping chamber one side is equipped with the drawing of patterns subassembly, shaping chamber opposite side is equipped with interior loose core subassembly, interior loose core subassembly include with fixed die plate fixed connection's first fixing base, sliding connection has the slip subassembly on the first fixing base, the slip subassembly is close to shaping chamber one side is equipped with the inner core subassembly, first fixing base with be equipped with on the slip subassembly and drive the inner core subassembly is kept away from the pull rod of shaping chamber.

As a further improvement of the invention, the sliding component comprises a driving sliding block arranged at one side far away from the forming cavity, two groups of pull rods are inserted on the driving sliding block, a driven sliding block is arranged at one side, close to the forming cavity, of the driving sliding block, and the driven sliding block is connected with the driving sliding block through a plurality of reset springs.

As a further improvement of the invention, the inner core assembly comprises a plurality of drawing rods inserted into the passive sliding blocks, one ends of the drawing rods are fixedly connected with the active sliding blocks, the other ends of the drawing rods are sleeved with clamping blocks, and clamping sleeves are arranged on the outer sides of the clamping blocks.

As a further improvement of the invention, two sides of the drawing rod, which are close to one end of the forming cavity, are provided with slopes which incline inwards, and the outer sides of the two slopes are connected with clamping blocks in a sliding way.

As a further improvement of the invention, through holes are arranged on two sides of the clamping sleeve, the drawing rod and the clamping block are inserted into the clamping sleeve, and one side of the clamping block, which is close to the forming cavity, protrudes from the through holes.

As a further improvement of the invention, clamping grooves are arranged on two sides of one end of the clamping sleeve, which is far away from the forming cavity, and protrusions which are clamped with the clamping grooves are arranged on the clamping blocks.

As a further improvement of the invention, the sliding assembly comprises a second fixing seat fixedly connected with the fixed template, a drawing block is connected to the second fixing seat in a sliding manner, a connecting block is arranged on one side of the drawing block, which is close to the forming cavity, a plurality of drawing columns are arranged on the connecting block, and pull rods for driving the drawing columns to be far away from the forming cavity are arranged on the second fixing seat and the connecting block.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the demolding assembly and the inner core-pulling assembly are arranged at two sides of the molding cavity, so that the inner core assembly of the inner core-pulling assembly is separated from the molding cavity by the sliding assembly, the core-pulling effect is achieved, meanwhile, the structure is simpler, the production cost is reduced, and meanwhile, the operation is simple and convenient, and the demolding efficiency is improved;

According to the invention, the inner core assembly is arranged on the sliding assembly, the active sliding block is driven to slide by the pull rod, the pull rod is firstly pulled away from the clamping block at the moment to be separated from the clamping state, and then the passive sliding block is connected with the return spring to be further separated from the forming cavity, so that the demoulding is finally completed, the structure is simple, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the upper part of the stationary platen of the present invention;

FIG. 3 is a schematic perspective view of an inner core pulling assembly according to the present invention;

fig. 4 is a schematic cross-sectional structure of the core assembly of the present invention.

Wherein, the names of the part labels in the 4 schematic diagrams are as follows:

1. a stationary mold plate; 2, an upper die core, 3, a lower die core, 4, a forming cavity;

5. the demolding assembly, the second fixing seat, the drawing block, the connecting block, the drawing column and the drawing column are respectively arranged in the mold cavity;

6. An inner core-pulling assembly; 61, a first fixing seat, 62, a sliding component, 621, a driving sliding block, 622, a driven sliding block, 623, a return spring, 63 and a pull rod;

7. the inner core assembly, 71, a drawing rod, 72, a clamping block, 721, a bulge, 73, a clamping sleeve, 731, a through hole, 732 and a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention provides the following examples:

The inner core-pulling injection mold comprises a fixed mold plate 1, a lower mold core 3 and an upper mold core 2 are arranged above the fixed mold plate 1, a molding cavity 4 for products is reserved between the lower mold core 3 and the upper mold core 2, a demolding component 5 is arranged on one side of the molding cavity 4, an inner core-pulling component 6 is arranged on the other side of the molding cavity 4, the inner core-pulling component 6 comprises a first fixing seat 61 fixedly connected with the fixed mold plate 1, a sliding component 62 is connected onto the first fixing seat 61 in a sliding manner, an inner core component 7 is arranged on one side, close to the molding cavity 4, of the sliding component 62, a pull rod 63 for driving the inner core component 7 to be far away from the molding cavity 4 is arranged on the first fixing seat 61 and the sliding component 62, and the demolding component 5 and the inner core component 6 are arranged on two sides of the molding cavity 4, so that the inner core component 7 of the inner core-pulling component 6 is driven to be separated from the molding cavity 4 through the sliding component 62, the core-pulling component 6 has a core-pulling effect, meanwhile, the structure is simpler, the production cost is reduced, and the demolding efficiency is improved;

The sliding assembly 62 includes a driving sliding block 621 disposed at a side far from the molding cavity 4, two groups of pull rods 63 are inserted on the driving sliding block 621, a driven sliding block 622 is disposed at a side of the driving sliding block 621 near the molding cavity 4, the driven sliding block 622 is connected with the driving sliding block 621 through a plurality of return springs 623, the pull rods 63 drive the driving sliding block 621 to slide in a direction far from the molding cavity 4, and after sliding for a certain distance, the return springs 623 pull the driven sliding block 622 to slide in a direction far from the molding cavity 4;

the inner core assembly 7 comprises a plurality of drawing rods 71 inserted into the passive sliding blocks 622, one ends of the drawing rods 71 are fixedly connected with the active sliding blocks 621, clamping blocks 72 are sleeved at the other ends of the drawing rods 71, clamping sleeves 73 are arranged on the outer sides of the clamping blocks 72, slopes which incline inwards are arranged on two sides of the drawing rods 71 close to one end of the forming cavity 4, clamping blocks 72 are connected on the outer sides of the two slopes in a sliding manner, through holes 731 are arranged on two sides of the clamping sleeves 73, the drawing rods 71 and the clamping blocks 72 are inserted into the clamping sleeves 73, clamping grooves 732 are formed in two sides of the clamping sleeves 73 close to one side of the forming cavity 4 and protrude from the through holes 731, a protrusion 721 which is clamped with the clamping grooves 732 is formed in the clamping sleeves 73, the inner core assembly 7 is arranged on the sliding assembly 62, the active sliding blocks 621 are driven by a pull rod 63 to slide, the drawing rods 71 are firstly separated from the clamping blocks 72 from the clamping state, and then the passive sliding blocks 622 are connected through reset springs 623 to be separated from the forming cavity 4, and the demoulding is finally completed, the structure is simple, and the working efficiency is improved;

the sliding assembly 62 comprises a second fixing seat 51 fixedly connected with the fixed template 1, a drawing block 52 is slidably connected to the second fixing seat 51, a connecting block 53 is arranged on one side, close to the forming cavity 4, of the drawing block 52, a plurality of drawing columns 54 are arranged on the connecting block 53, a pull rod 63 driving the drawing columns 54 to be far away from the forming cavity 4 is arranged on the second fixing seat 51 and the connecting block 53, and the pull rod 63 drives the drawing block 52 and the connecting block 53 to move towards the direction far away from the forming cavity 4, so that demolding of the drawing columns 54 is completed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an in shrink injection mold that looses, includes fixed die plate (1), fixed die plate (1) top is equipped with lower mould benevolence (3) and goes up mould benevolence (2), lower mould benevolence (3) with go up mould benevolence (2) between leave shaping chamber (4) of product, wherein shaping chamber (4) one side is equipped with drawing of patterns subassembly (5), shaping chamber (4) opposite side is equipped with in loose core subassembly (6), in loose core subassembly (6) include with fixed die plate (1) fixed connection's first fixing base (61), sliding connection has sliding component (62) on first fixing base (61), sliding component (62) are close to shaping chamber (4) one side is equipped with inner core assembly (7), first fixing base (61) with be equipped with on sliding component (62) and drive inner core assembly (7) keep away from pull rod (63) of shaping chamber (4).

2. The retractable core-pulling injection mold according to claim 1, wherein the sliding assembly (62) comprises a driving sliding block (621) arranged at one side far away from the molding cavity (4), two groups of pull rods (63) are inserted on the driving sliding block (621), a driven sliding block (622) is arranged at one side, close to the molding cavity (4), of the driving sliding block (621), and the driven sliding block (622) is connected with the driving sliding block (621) through a plurality of return springs (623).

3. The retractable core-pulling injection mold of claim 2, wherein the inner core assembly (7) comprises a plurality of drawing rods (71) inserted into the passive sliding blocks (622), one ends of the drawing rods (71) are fixedly connected with the active sliding blocks (621), clamping blocks (72) are sleeved at the other ends of the drawing rods (71), and clamping sleeves (73) are arranged outside the clamping blocks (72).

4. The core-pulling injection mold according to claim 3, wherein two sides of the drawing rod (71) close to one end of the molding cavity (4) are provided with inward inclined slopes, and clamping blocks (72) are slidably connected to the outer sides of the two slopes.

5. The retractable core-pulling injection mold as set forth in claim 4, wherein through holes (731) are formed in two sides of the clamping sleeve (73), the drawing rod (71) and the clamping block (72) are inserted into the clamping sleeve (73), and one side of the clamping block (72) close to the molding cavity (4) protrudes from the through holes (731).

6. The retractable core-pulling injection mold as set forth in claim 5, wherein clamping grooves (732) are formed in two sides of one end, far away from the molding cavity (4), of the clamping sleeve (73), and protrusions (721) which are engaged with the clamping grooves (732) are formed in the clamping blocks (72).

7. The retractable core-pulling injection mold of claim 6, wherein the sliding assembly (62) comprises a second fixing seat (51) fixedly connected with the fixed die plate (1), a drawing block (52) is slidably connected to the second fixing seat (51), a connecting block (53) is arranged on one side, close to the forming cavity (4), of the drawing block (52), a plurality of drawing columns (54) are arranged on the connecting block (53), and a pull rod (63) for driving the drawing columns (54) to be far away from the forming cavity (4) is arranged on the second fixing seat (51) and the connecting block (53).