CN217434920U

CN217434920U - Core-pulling type high-precision molding injection structure

Info

Publication number: CN217434920U
Application number: CN202220752402.7U
Authority: CN
Inventors: 何磊磊; 王兴强
Original assignee: Ives Auto Parts Suzhou Co ltd
Current assignee: Ives Auto Parts Suzhou Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-09-16
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a core-pulling type high accuracy molding injection structure, including the lower bolster, locate the lower mould benevolence at lower bolster top, the shaping piece in the lower mould benevolence is inlayed in the activity, the lower bolster surface is equipped with the supporting shoe that is located the lower mould benevolence side, the supporting shoe top is equipped with along its sliding fit takes out the chipware, a plurality of PIN needles that extend to the supporting shoe top are packed into at shaping piece top, take out chipware and supporting shoe clearance fit, the terminal surface of taking out the chipware is pegged graft in PIN needle outside setting. The utility model discloses a structure of loosing core steadily slides and gets into the die cavity, and the product is higher with PIN needle injection molding combined forming precision.

Description

Core-pulling type high-precision molding injection structure

Technical Field

The utility model belongs to the technical field of injection mold, especially, relate to a core-pulling type high accuracy molding injection structure.

Background

In putting into the mould with PIN in advance usually in the manufacturing process of current connector, the mode of integrative injection moulding of rethread combines with PIN, and conventional mould adopts the side direction structure of loosing core, and for patent number CN201920144691.0 discloses a slider is inlayed to the oblique guide pillar structure, and the A board is provided with oblique guide pillar, the lower extreme of oblique guide pillar runs through the slider, and open the slider with oblique guide pillar during the die sinking, the slider sets up in the B board. The existing lateral core pulling structure discloses that an inclined guide post is in inserted fit with a hole in a sliding block, the inclined guide post and the sliding block collide with each other when being inserted, and the matching precision error exists after long-time operation, so that the core pulling position of a product is flawed; by adopting the existing lateral core pulling structure, the joint of the product and the PIN is weaker in connection strength, and the product is poor in molding appearance due to core pulling.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving above-mentioned technical problem, and provide core-pulling formula high accuracy shaping injection structure to realize that the structure of loosing core steadily slides and gets into the die cavity, the product is higher with PIN needle injection molding combined forming precision. In order to achieve the above purpose, the utility model discloses technical scheme as follows:

core-pulling type high accuracy shaping injection structure, including the lower bolster, locate the lower mould benevolence at lower bolster top, the shaping piece in the lower mould benevolence is inlayed in the activity, the lower bolster surface is equipped with the supporting shoe that is located lower mould benevolence side, the supporting shoe top is equipped with along its sliding fit's core piece of taking out, a plurality of PIN needles that extend to the supporting shoe top are packed into at shaping piece top, core piece and supporting shoe clearance fit take out, the terminal surface of core piece is pegged graft in the outside setting of PIN needle.

Specifically, the shaping piece top is equipped with a plurality of constant head tanks that the opening extends to its lateral wall, be equipped with the PIN needle in the constant head tank.

Specifically, a movable cavity for accommodating the forming block is arranged in the lower die core, and the forming block is vertically arranged in the movable cavity.

Specifically, the top of the forming block is provided with a connecting block located at the inner end of the positioning groove, and a positioning hole corresponding to the positioning groove is formed in the connecting block.

Specifically, the locating hole setting is inserted to the one end of PIN needle, the other end embedding constant head tank of PIN needle is bent downwards along the lateral wall of shaping piece and is extended to the top of supporting shoe in the constant head tank.

Specifically, the surface of the connecting block is sunk into the movable cavity, and the surface height of the connecting block is lower than that of the forming block.

Specifically, the top of supporting shoe is equipped with the arc structure, the edge of arc structure is equipped with the catch groove that is used for spacing core spare of taking out.

Specifically, the cross section of the end part of the core pulling piece is of an oval structure, and a plurality of rib position grooves which are used for forming rib positions of a product are arranged at intervals in the circumferential direction of the end part of the core pulling piece.

Specifically, the outside of the core pulling piece is connected with a driving assembly, and the driving assembly comprises a sliding block seat connected with the core pulling piece, sliding block pressing strips arranged on two sides of the sliding block seat and an inclined guide post in inserting fit with the sliding block seat.

Specifically, the end face, deviating from the core pulling piece, of the slider seat is provided with a U-shaped opening, elastic needles are embedded in two sides, located in the U-shaped opening, of the slider seat respectively, the two elastic needles are located in the same horizontal line and are arranged oppositely, sliding grooves are arranged in the two sides of the inclined guide pillar respectively and are arranged along the length direction of the inclined guide pillar, and the elastic needles and the sliding grooves are correspondingly abutted to each other.

Compared with the prior art, the utility model discloses core-pulling formula high accuracy molding injection structure's beneficial effect mainly embodies:

the forming block is arranged in the lower die core, so that the product has a thicker glue injection position at the bending part of the PIN needle, and the connection strength of the product and the PIN needle in integrated glue injection forming is improved; set up drive assembly cooperation and take out the core piece for it is stable smooth and easy to loose core piece slip, take out the die cavity of moulding plastics that forms the product between core piece and the supporting shoe, mould plastics after the terminal surface grafting parcel PIN needle outside of taking out the core piece simultaneously, and after the die sinking, the PIN needle breaks away from in following the core piece, realizes accurate shaping and moulds plastics, and the in-process core piece of moulding plastics protects the PIN needle, avoids the PIN needle to expose the influence injection moulding precision.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the present embodiment;

fig. 3 is a schematic view of a partially enlarged core pulling member according to the present embodiment;

FIG. 4 is a schematic diagram illustrating an open state of the driving assembly according to the present embodiment;

FIG. 5 is a schematic view of a product structure according to the present embodiment;

FIG. 6 is a second schematic view of the product of the present embodiment;

the figures in the drawings represent:

1, a lower template, 11 lower die cores, 12 movable cavities, 2 forming blocks, 21 positioning grooves, 22 connecting blocks, 23 positioning holes, 3 supporting blocks, 31 arc-shaped structures, 32 retaining grooves, 4 core pulling pieces, 41 rib position grooves, 5PIN needles, 6 products, 61 rib positions, 62 outer shells, 63 connecting seats, 64 plug seats, 7 slider seats, 71 slider pressing strips, 72 inclined guide columns, 73 wear-resisting plates, 8U-shaped openings, 81 elastic needles and 82 sliding grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments.

Example (b):

referring to fig. 1 to 6, the present embodiment is a core-pulling type high-precision molding injection structure, which includes a lower template 1, a lower mold core 11 disposed on the top of the lower template 1, a molding block 2 movably embedded in the lower mold core 11, a supporting block 3 disposed on the surface of the lower template 1 and located on the side of the lower mold core 11, and a core-pulling element 4 slidably fitted along the supporting block 3; the top of the forming block 2 is provided with a plurality of positioning grooves 21 with openings extending to the side walls of the forming block, PIN needles 5 extending to the upper side of the supporting block 3 are arranged in the positioning grooves 21, the core-pulling piece 4 is in clearance fit with the supporting block 3, and the end face of the core-pulling piece 4 is inserted into the PIN needles 5 and is arranged outside the PIN needles.

The inside movable cavity 12 that is equipped with holding shaping piece 2 of lower mould benevolence 11, shaping piece 2 is vertical to be located in movable cavity 12, shaping piece 2's top is equipped with a plurality of constant head tanks 21 that the horizontal direction was arranged, and simultaneously, shaping piece 2's top still is equipped with the connecting block 22 that is located constant head tank 21 inner end, be equipped with the locating hole 23 that corresponds constant head tank 21 in the connecting block 22, PIN needle 5 is "nearly" style of calligraphy structure in this embodiment, locating hole 23 setting is inserted to PIN needle 5's one end, PIN needle 5's the other end imbeds in the constant head tank 21 and along the lateral wall of shaping piece 2 bend downwards and extend to the top of supporting shoe 3. Due to the arrangement of the positioning groove 21, the PIN needle 5 can be accurately positioned on the forming block 2 without shaking or displacement, and when the lower die core 11 and the upper die core (not shown in the figure) are closed, the forming block 2 and the supporting block 3 form a cavity structure.

The surface of the connecting block 22 sinks into the movable cavity 12, and the surface height of the connecting block 22 is lower than that of the forming block 2.

Product

6 and 5 injection moulding body coupling of PIN needle because the surface injecting glue of connecting block 22 is thick for the position of bending of PIN needle 5 is connected stably, and when shaping 2 bottom atress ejecting product 6 of piece, PIN needle 5 is great with the bonding force of 6 junctions of product, can not produce ejecting damage problem.

The top of supporting shoe 3 is equipped with

arc structure

31, and 3 one sides of supporting shoe and 11 intervals settings of lower mould benevolence, and the opposite side and the lower bolster 1 of supporting shoe 3 flush the setting. The edge of the arc-shaped structure 31 is provided with a retaining groove 32 for limiting the core piece 4, and when the core piece 4 slides in place along the supporting block 3, the core piece 4 abuts against the retaining groove 32 to stop moving. And sleeving the core pulling piece 4 outside the PIN needle 5, and closing the mold to perform injection molding operation.

The cross section of the end part of the core pulling piece 4 is of an oval structure, and a plurality of rib position grooves 41 which are used for forming rib positions 61 of a product 6 are arranged at intervals in the circumferential direction of the end part of the core pulling piece 4.

The product 6 comprises an outer shell 62 which is in copying correspondence with the lower die core 11, a connecting seat 63 which is arranged at the inner end of one side wall of the outer shell 62, and an inserting seat 64 which is arranged at the outer end of one side wall of the outer shell 62; a plurality of PIN needles 5 which penetrate through the connecting seat 63 and extend into the insertion opening of the insertion seat 64 are arranged in the connecting seat, the supporting block 3 and the upper die core are matched to form the insertion seat 64, and rib positions 61 corresponding to the rib position grooves 41 are arranged in the insertion seat 64.

The outside of the core pulling piece 4 is connected with a driving assembly, and the driving assembly comprises a slider seat 7 connected with the core pulling piece 4, slider pressing strips 71 arranged on two sides of the slider seat 7 and an inclined guide post 72 in inserted fit with the slider seat 7; the bottom of the slider seat 7 is provided with a wear-resisting plate 73, the slider seat 7 is horizontally arranged along the wear-resisting plate 73 in a sliding manner, and the slider pressing strips 71 guide the sliding track of the slider seat 7.

The end face, departing from the core pulling element 4, of the slider seat 7 is provided with a U-shaped opening 8, elastic needles 81 are respectively embedded in two sides, located at the U-shaped opening 8, of the interior of the slider seat 7, and the two elastic needles 81 are located at the same horizontal line and are oppositely arranged. The both sides of oblique guide pillar 72 are equipped with respectively along the spout 82 that its length direction arranged, bullet needle 81 supports with the corresponding setting of leaning on of spout 82, when oblique guide pillar 72 lift removal, bullet needle 81 atress drives slider seat 7 horizontal migration, because slider seat 7 is provided with certain elastic space when U type opening 8 makes oblique guide pillar 72 peg graft cooperation, even the grafting precision is not enough, but still can keep slider seat 7 smooth sliding to ensure that the precision that the shaping product of core piece 4 was moulded plastics satisfies the requirement.

When the embodiment is applied, the forming block 2 is arranged in the lower die core 11, so that the product 6 has a thicker glue injection position at the bending part of the PIN needle 5, and the connection strength of the product 6 and the PIN needle 5 in integrated glue injection forming is improved; set up drive assembly cooperation core pulling piece 4 for core pulling piece 4 slides stably smoothly, forms the die cavity of moulding plastics of product 6 between core pulling piece 4 and the supporting shoe 3, and mould plastics behind the terminal surface grafting parcel PIN needle 5 outside of core pulling piece 4 simultaneously, and after the die sinking, PIN needle 5 breaks away from in the core pulling piece 4, realizes accurate shaping and moulds plastics, and the in-process core pulling piece 4 of moulding plastics protects PIN needle 5, avoids PIN needle 5 to expose the influence injection moulding precision.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. Core-pulling type high-precision molding injection structure comprises a lower template, a lower die core arranged at the top of the lower template, and a molding block movably embedded in the lower die core, and is characterized in that: the surface of the lower template is provided with a supporting block positioned on the side edge of the lower mold core, the top of the supporting block is provided with a core pulling piece in sliding fit along the supporting block, the top of the forming block is provided with a plurality of PIN needles extending to the upper part of the supporting block, the core pulling piece is in clearance fit with the supporting block, and the end surface of the core pulling piece is inserted outside the PIN needles.

2. The core-pulling type high-precision molding injection structure according to claim 1, characterized in that: the shaping piece top is equipped with a plurality of constant head tanks that the opening extends to its lateral wall, be equipped with the PIN needle in the constant head tank.

3. The core-pulling type high-precision molding injection structure according to claim 2, characterized in that: the lower die core is internally provided with a movable cavity for accommodating the forming block, and the forming block is vertically arranged in the movable cavity.

4. The core-pulling type high-precision molding injection structure according to claim 3, characterized in that: the top of the forming block is provided with a connecting block located at the inner end of the positioning groove, and a positioning hole corresponding to the positioning groove is formed in the connecting block.

5. The core-pulling type high-precision molding injection structure according to claim 4, wherein: the locating hole setting is inserted to the one end of PIN needle, the other end embedding constant head tank of PIN needle is bent downwards along the lateral wall of shaping piece and is extended to the top of supporting shoe in the constant head tank.

6. The core-pulling type high-precision molding injection structure according to claim 4, wherein: the surface of the connecting block is sunk into the movable cavity, and the surface height of the connecting block is lower than that of the forming block.

7. The core-pulling type high-precision molding injection structure according to claim 1, characterized in that: the top of supporting shoe is equipped with the arc structure, the edge of arc structure is equipped with the retaining groove that is used for spacing core spare of taking out.

8. The core-pulling type high-precision molding injection structure according to claim 1, characterized in that: the end section of the core pulling piece is of an oval structure, and a plurality of rib position grooves which are arranged at intervals and used for forming rib positions of products are formed in the circumferential direction of the end of the core pulling piece.

9. The core-pulling type high-precision molding injection structure according to claim 1, characterized in that: the external connection of taking out the chipware has drive assembly, drive assembly is including the slider seat of connecting taking out the chipware, locate the slider layering of slider seat both sides and the oblique guide pillar of grafting cooperation slider seat.

10. The core-pulling high-precision molding injection structure according to claim 9, wherein: the end face, deviating from the core pulling piece, of the sliding block seat is provided with a U-shaped opening, elastic needles are embedded in two sides, located in the U-shaped opening, of the sliding block seat respectively, the two elastic needles are located on the same horizontal line and are arranged oppositely, sliding grooves are arranged on two sides of the inclined guide pillar respectively along the length direction of the inclined guide pillar, and the elastic needles and the sliding grooves are correspondingly abutted to each other.