CN223147651U - Flaring inner ring groove mold core structure - Google Patents

Abstract

The utility model belongs to the technical field of dies, in particular to a flaring inner ring groove die core structure which comprises a core outer sleeve and a sliding seat, wherein a first rotating block and a second rotating block are alternately arranged on the periphery of the head of the sliding seat, ring grooves are formed in the inner side wall of the core outer sleeve, protruding blocks assembled in the ring grooves are respectively arranged on the periphery of the first rotating block and the periphery of the second rotating block, a push rod is arranged in the sliding seat, the outer end of the push rod extends out of the sliding seat, when the sliding seat moves towards the tail, the outer end of the push rod drives the head of the second rotating block to rotate towards the inner side by taking the corresponding protruding blocks as supporting points, the head of the first rotating block rotates towards the inner side by taking the corresponding protruding blocks as supporting points under the pushing of the tail of the second rotating block, and when the sliding seat moves towards the head, the head of the first rotating block and the second rotating block are pushed to rotate towards the outer side by taking the corresponding protruding blocks as supporting points respectively. The heads of the first rotating block and the second rotating block are not easy to wear, so that the phenomenon of material running and flying does not occur, and the quality of products is good.

Description

Flaring inner ring groove mold core structure

Technical field:

The utility model belongs to the technical field of dies, and particularly relates to a flaring inner annular groove die core structure.

The background technology is as follows:

When the plastic mould is used for producing plastic products, such as plastic pipe fittings, in particular to flaring pipe fittings, the flaring pipe fitting body can be ejected out of the mould by the mould ejection mechanism after core pulling and demoulding are carried out on the flaring position during demoulding.

The Chinese patent publication No. CN102241119A, application day 2011.06.24 and publication day 2011.11.16 disclose a flaring pipe injection mold core pulling mechanism, which comprises a mold fixed mold seat plate and a movable mold seat plate, wherein the fixed mold seat plate is connected with a fixed mold plate, a mold foot is arranged on the movable mold seat plate, an ejector plate and an ejector pin compound plate are arranged in the mold foot, the ejector plate is connected with an ejector pin, a movable mold plate is arranged on the mold foot, a formed flaring pipe is arranged between the movable mold plate and the fixed mold plate, an I-shaped block is arranged on one side of the movable mold seat plate, a sliding block is arranged on the I-shaped block, a flaring sliding block octahedron is arranged in the sliding block, 4 flaring large sliding blocks and 4 flaring small sliding blocks are arranged at the head of the flaring sliding block octahedron in a crossing way, the flaring small sliding blocks are contacted with the head oblique dovetail groove of the flaring sliding block octahedron, the flaring large sliding blocks and the flaring small sliding blocks are mutually combined to be matched with the flaring pipe, a connecting rod is arranged in the flaring octahedron the flaring slider octahedron, the head of the connecting rod is connected with a sliding block core, the sliding block core is matched with the inner wall of the flaring pipe, the tail of the connecting rod is connected with a core pulling cylinder, an oblique sliding chute is arranged in the middle of the octahedron the sliding block, and a locking pin is connected under the plate, and the flaring pin is matched with the die locking pin. During core pulling, the movable template and the fixed template are driven by the power of the injection molding machine to open the die, during the die opening, the die locking bending pin under the fixed template is matched with the inclined chute of the flaring slider octahedron to drive the flaring slider octahedron to slide outwards, the flaring slider octahedron slides outwards to be equal to the flaring slider octahedron to slide downwards (radially shrink) along the inclined dovetail groove due to the contact of the flaring slider octahedron with the inclined dovetail groove, and during the sliding of the flaring slider, the flaring slider and the flaring slider slide downwards, the flaring slider and the flaring slider are mutually crossed to press the flaring slider to slide downwards (shrink) simultaneously, so that the flaring slider and the flaring slider are demolded from the flaring of the flaring pipe fitting, at the moment, the die opening is finished, the flaring of the flaring pipe fitting is finished, but the slider core is still in the inner wall of the flaring pipe fitting, so that the core pulling cylinder drives the connecting rod to pull the slider core from the inner wall of the flaring pipe fitting, the core pulling is finished, and finally the flaring pipe fitting is ejected out of the die by the ejection mechanism, and the demolding is finished. The mode locking curved pin of this scheme has possessed mode locking (locking slider when the compound die) simultaneously and has been loosed core (make flaring slider octahedral slide loose core when the die sinking) effect, reduces power, saves cost, flaring big slider and flaring slider octahedral dovetail contact, and sliding balance is good, and the drawing of patterns is smooth.

The flaring pipe fitting injection mold core pulling mechanism has the defects that the flaring small sliding block is pressed by the flaring large sliding block to realize simultaneous sliding shrinkage, and the flaring small sliding block and the flaring large sliding block are easy to wear, so that the material overflows into the worn part, the phenomenon of material running and flying occurs, and the quality of products is influenced.

The invention comprises the following steps:

The utility model aims to provide a flaring inner ring groove mold core structure, wherein the heads of a first rotating block and a second rotating block are not easy to wear, so that the phenomenon of material running and flying does not occur, and the quality of products is good.

The utility model is realized in the following way:

the flaring inner ring groove mold core structure comprises a core outer sleeve and a sliding seat which is axially and slidably arranged in the core outer sleeve and the head of which is conical, wherein a first rotating block and a second rotating block are alternately arranged on the periphery of the head of the sliding seat, the outer side of the first rotating block is large, the inner side of the first rotating block is small, the outer side of the second rotating block is small, the inner side of the second rotating block is large, the first rotating block and the second rotating block jointly form an annular structure, an annular groove is formed in the inner side wall of the core outer sleeve, protruding blocks which are assembled in the annular groove are respectively arranged on the periphery of the first rotating block and the second rotating block, push rods which are positioned and are matched with the second rotating block in number are respectively arranged in the sliding seat, the outer ends of the push rods extend out of the sliding seat, when the sliding seat moves towards the tail, the outer ends of the push rods drive the head of the second rotating block to rotate inwards by taking the corresponding protruding blocks as supporting points, the head of the first rotating block is pushed by the tail of the second rotating block to rotate inwards by taking the corresponding protruding blocks as supporting points, and when the sliding seat moves towards the head direction.

In the flaring inner ring groove mold core structure, the inner side wall of the second rotating block is concavely provided with a strip-shaped groove, the length direction of the strip-shaped groove is set along the axial direction of the second rotating block, the tail of the strip-shaped groove is provided with a chute with gradually reduced depth, and the sliding seat is pushed to rotate by the chute when the outer end of the push rod moves from the strip-shaped groove to the chute in the tail direction moving process.

In the flaring inner annular groove mold core structure, the outer end of the push rod is hemispherical, and the bottom of the strip-shaped groove is a cylindrical surface matched with the hemispherical.

In the flaring inner annular groove mold core structure, the head of the strip-shaped groove is provided with a groove with the bottom matched with the hemispherical shape.

In the flaring inner ring groove mold core structure, the end face of the lug, which is close to one side of the head of the second rotating block, is a round table surface, and the diameter of the round table surface is gradually increased from one side, which is close to the head of the second rotating block, to one side, which is close to the tail of the second rotating block.

In the flaring inner ring groove mold core structure, the round table surface and the outer side surface of the lug are in transition through an arc surface.

In the flaring inner annular groove mold core structure, the inner side wall of the mold core outer sleeve is provided with the annular notch avoiding the tail part of the first rotating block and the tail part of the second rotating block.

In the flaring inner ring groove mold core structure, a connecting rod is arranged in the sliding seat in a sliding mode, the head part of the connecting rod extends out of the sliding seat to be connected with the sliding block mold core, the tail part of the connecting rod extends out of the sliding seat to be connected with the core pulling oil cylinder, a through hole matched with a push rod is formed in the side wall of the sliding seat, and the inner end of the push rod is in contact with the connecting rod.

In the above-mentioned flaring inner ring groove mold core structure, two side walls of the first rotating block and the second rotating block are inclined planes which gradually incline from outside to inside to the middle, and two side walls of the second rotating block and the first rotating block are inclined planes which gradually incline from inside to outside to the middle.

Compared with the prior art, the utility model has the outstanding advantages that:

1. According to the utility model, the first rotating block realizes inward rotation of the head part of the first rotating block through the thrust of the tail part of the second rotating block, the head parts of the first rotating block and the head part of the second rotating block are in weak action, and the heads of the first rotating block and the second rotating block are not easy to wear, so that the phenomenon of material running and flying does not occur, and the quality of products is good;

2. According to the utility model, the inner side wall of the second rotating block is concavely provided with the strip-shaped groove, the length direction of the strip-shaped groove is arranged along the axial direction of the second rotating block, the tail part of the strip-shaped groove is provided with the chute with gradually reduced depth, and when the sliding seat moves towards the tail part, the outer end of the push rod pushes the second rotating block to rotate by abutting against the chute when the outer end of the push rod moves from the strip-shaped groove to the chute, so that the structure is simple, the installation is convenient, and the realization effect is good.

Description of the drawings:

FIG. 1 is a perspective view of a turning block of the present utility model in an undetached state without a connecting rod;

FIG. 2 is a cross-sectional view of the pivot block of the present utility model in an undetached state and without the connecting rod;

FIG. 3 is a perspective view of the rotating block of the present utility model in an inwardly rotated condition and without the slide core;

FIG. 4 is a cross-sectional view of the rotating block of the present utility model in an inwardly rotated condition and without the slide core;

FIG. 5 is an exploded view of the no-connecting rod, slider core of the present utility model.

Reference numeral 1, core jacket; 2, a sliding seat, 3, a first rotating block, 4, a second rotating block, 5, an annular groove, 6, a convex block, 7, a push rod, 8, an elongated groove, 9, a chute, 10, a groove, 11, a round table surface, 12, an arc surface, 13, an annular notch, 14, a connecting rod, 15 and a sliding block core.

The specific embodiment is as follows:

The utility model is further described below with reference to the specific examples, see fig. 1-5:

A flaring inner ring groove die core structure comprises a core outer sleeve 1 and a sliding seat 2 which is axially and slidingly arranged in the core outer sleeve 1, the head of the sliding seat 2 is conical, a first rotating block 3 and a second rotating block 4 are alternately arranged on the periphery of the head of the sliding seat 2, the outer side of the first rotating block 3 is large, the inner side of the first rotating block 3 is small, the outer side of the second rotating block 4 is large, the first rotating block 3 and the second rotating block 4 jointly form an annular structure, an annular groove 5 is arranged on the inner side wall of the core outer sleeve 1, protruding blocks 6 which are assembled in the annular groove 5 are respectively arranged on the periphery of the first rotating block 3 and the second rotating block 4, push rods 7 which are positioned and are matched with the second rotating block 4 in number are respectively arranged in the sliding seat 2, the outer ends of the push rods 7 extend out of the sliding seat 2, when the sliding seat 2 moves towards the tail, the outer ends of the push rods 7 drive the heads of the second rotating blocks 4 to rotate inwards by taking corresponding protruding blocks 6 as supporting points, the heads of the first rotating blocks 3 rotate inwards under the pushing of the tail parts of the second rotating blocks 4 as supporting points, and when the sliding seat 2 moves towards the head directions.

The working principle of the utility model is that when the sliding seat 2 moves towards the tail part, as shown in figures 1-5, the outer end of the push rod 7 drives the head part of the second rotating block 4 to rotate inwards by taking the corresponding lug 6 as a pivot, the tail part of the second rotating block 4 rotates outwards by taking the corresponding lug 6 as a pivot, the tail part of the first rotating block 3 is pushed to rotate outwards by taking the corresponding lug 6 as a pivot, the head part of the first rotating block 3 rotates inwards by taking the corresponding lug 6 as a pivot, the inward rotation of the head parts of the second rotating block 4 and the first rotating block 3 is realized, and when the sliding seat 2 moves towards the head part, the head parts of the first rotating block 3 and the second rotating block 4 are pushed to rotate outwards by taking the corresponding lug 6 as a pivot respectively, so that the reset of the first rotating block 3 and the second rotating block 4 is realized.

The flaring part of the flaring pipe fitting is at the head of the first rotating block 3 and the second rotating block 4, and is irrelevant to the tail of the first rotating block 3 and the second rotating block 4.

The first rotating block 3 of the utility model realizes the inward rotation of the head part by the thrust of the tail part of the second rotating block 4, the head parts of the first rotating block 3 and the second rotating block 3 are in weak action, and the heads of the first rotating block 3 and the second rotating block 3 are not easy to wear, so that the phenomenon of material flying does not occur, the quality of products is good, and meanwhile, the movement of the first rotating block 3 and the second rotating block 4 of the utility model is rotation rather than sliding, and the wear between the two is small.

As shown in fig. 2, 4 and 5, the inner side wall of the second rotating block 4 is concavely provided with a strip-shaped groove 8, the length direction of the strip-shaped groove 8 is arranged along the axial direction of the second rotating block 4, the tail part of the strip-shaped groove 8 is provided with a chute 9 with gradually reduced depth, and when the outer end of the push rod 7 moves from the strip-shaped groove 8 to the chute 9 in the tail part moving process of the sliding seat 2, the outer end of the push rod 7 props against the chute 9 to push the second rotating block 4 to rotate. Simple structure, easy to assemble, and realize effectually.

In order to facilitate the push rod 7 to drive the second rotating block 4 to rotate, as shown in fig. 2, 4 and 5, the outer end of the push rod 7 is hemispherical, and the bottom of the elongated slot 8 is a cylindrical surface matched with the hemispherical.

Further, the head of the elongated slot 8 is provided with a groove 10 with a bottom adapted to the hemispherical shape.

In order that the first rotating block 3 and the second rotating block 4 can smoothly rotate, the end surface of the bump 6 close to the head of the second rotating block 4 is a round table surface 11, and the diameter of the round table surface 11 gradually increases from the side close to the head of the second rotating block 4 to the side close to the tail.

In order to further ensure that the first rotating block 3 and the second rotating block 4 can rotate smoothly, the round table surface 11 and the outer side surface of the protruding block 6 are in transition through an arc surface 12.

In order to prevent the core sleeve 1 from influencing the rotation of the first rotating block 3 and the second rotating block 4, an annular gap 13 avoiding the tail parts of the first rotating block 3 and the second rotating block 4 is formed in the inner side wall of the core sleeve 1.

The installation structure of the push rod 7 is shown in figures 2 and 4, a connecting rod 14 is arranged in the sliding seat 2 in a sliding manner, the head part of the connecting rod 14 extends out of the sliding seat 2 to be connected with a sliding block core 15, the tail part of the connecting rod extends out of the sliding seat 2 to be connected with a core pulling oil cylinder, a through hole matched with the push rod 7 is formed in the side wall of the sliding seat 2, and the inner end of the push rod 7 is in contact with the connecting rod 14. Simple structure, be convenient for processing and installation.

The specific structure of the first rotating block 3 and the second rotating block 4 is that two side walls of the first rotating block 3, which are in contact with the second rotating block 4, are inclined planes which gradually incline from outside to inside to the middle, and two side walls of the second rotating block 4, which are in contact with the first rotating block 3, are inclined planes which gradually incline from inside to outside to the middle.

In this embodiment, the end close to the slider core 15 is a head portion, and the end far from the slider core 15 is a tail portion.

The above embodiments are only one of the preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, so that all equivalent changes according to the shape, structure and principle of the present utility model are covered by the scope of the present utility model.

Claims (9)

1. A flaring inner ring groove die core structure is characterized by comprising a core outer sleeve (1) and a sliding seat (2) which is axially and slidably arranged in the core outer sleeve (1) and is provided with a conical head, wherein a first rotating block (3) and a second rotating block (4) are alternately arranged on the periphery of the head of the sliding seat (2), the outer side of the first rotating block (3) is large, the inner side of the second rotating block (4) is small, the inner side of the second rotating block is large, the first rotating block (3) and the second rotating block (4) jointly form an annular structure, an annular groove (5) is formed in the inner side wall of the core outer sleeve (1), protruding blocks (6) which are assembled in the annular groove (5) are respectively arranged on the periphery of the first rotating block (3) and the second rotating block (4), pushing rods (7) which are matched with the second rotating block (4) in position and number are arranged in the sliding seat (2), when the outer end of each pushing rod (7) extends out of the sliding seat (2) and moves towards the tail direction, the outer end of each pushing rod (7) drives the corresponding protruding block (6) to rotate towards the inner side of the corresponding protruding block (6), and when the head of each pushing rod (4) moves towards the corresponding protruding block (6) towards the tail direction in the direction, and the head of the corresponding rotating block (4) is downwards in the direction towards the direction of the head (2), the head parts of the first rotating block (3) and the second rotating block (4) are pushed to rotate outwards by taking the corresponding convex blocks (6) as supporting points.

2. The flaring inner ring groove mold core structure of claim 1, wherein the inner side wall of the second rotating block (4) is concavely provided with a strip-shaped groove (8), the length direction of the strip-shaped groove (8) is arranged along the axial direction of the second rotating block (4), the tail part of the strip-shaped groove (8) is provided with a chute (9) with gradually reduced depth, and when the outer end of the push rod (7) moves from the strip-shaped groove (8) to the chute (9) in the tail part moving process of the sliding seat (2), the outer end of the push rod (7) props against the chute (9) to push the second rotating block (4) to rotate.

3. The flaring inner ring groove mold core structure of claim 2, wherein the outer end of the push rod (7) is hemispherical, and the bottom of the strip-shaped groove (8) is a cylindrical surface matched with the hemispherical shape.

4. A flaring inner ring groove mould core structure according to claim 3, characterized in that the head of the strip-shaped groove (8) is provided with a groove (10) with the bottom matched with the hemispherical shape.

5. The flaring inner ring groove mold core structure of claim 1, wherein the end face of the convex block (6) close to the head of the second rotating block (4) is a round table surface (11), and the diameter of the round table surface (11) gradually increases from the side close to the head of the second rotating block (4) to the tail side.

6. The flaring inner ring groove mold core structure of claim 5, wherein the round table surface (11) and the outer side surface of the convex block (6) are in transition through an arc surface (12).

7. The flaring inner ring groove mold core structure of claim 1, wherein the inner side wall of the core sleeve (1) is provided with an annular gap (13) for avoiding the tail parts of the first rotating block (3) and the second rotating block (4).

8. The flaring inner ring groove mold core structure of claim 1 is characterized in that a connecting rod (14) is arranged in the sliding seat (2) in a sliding mode, the head part of the connecting rod (14) extends out of the sliding seat (2) to be connected with a sliding block mold core (15), the tail part of the connecting rod extends out of the sliding seat (2) to be connected with a core pulling cylinder, a through hole matched with a push rod (7) is formed in the side wall of the sliding seat (2), and the inner end of the push rod (7) is in contact with the connecting rod (14).

9. The flaring inner ring groove mold core structure of claim 1, wherein the two side walls of the first rotating block (3) contacted with the second rotating block (4) are inclined planes which gradually incline from outside to inside to the middle, and the two side walls of the second rotating block (4) contacted with the first rotating block (3) are inclined planes which gradually incline from inside to outside to the middle.