CN215203000U - Ejecting structure of loosing core of cylinder ring line product back-off - Google Patents

Abstract

The utility model discloses a cylinder ring line product back-off is ejecting structure of loosing core, including lower mould benevolence, locate the first shaping piece on lower mould benevolence surface, with first shaping piece an organic whole be connected the second shaping piece, locate second shaping piece both sides and buckle to the supporting shoe above that, the center of first shaping piece is equipped with the ejector pin that runs through lower mould benevolence lift and move the setting, is equipped with the annular between the periphery of ejector pin and the first shaping piece, the upper portion circumference of ejector pin is equipped with the flange that a plurality of intervals set up, the symmetry is equipped with a set of extension on the lateral wall of annular and supports the extension that leans on the lateral wall of ejector pin, the circumference of first shaping piece is equipped with a plurality of first thimbles that set up and run through lower mould benevolence around the ejector pin. The utility model discloses a take off by force and loose core and guarantee that back-off ring grain product shaping is accurate.

Description

Ejecting structure of loosing core of cylinder ring line product back-off

Technical Field

The utility model belongs to the technical field of the mould, especially, relate to an ejecting structure of loosing core of cylinder ring line product back-off.

Background

The existing plastic product cylinder structure is provided with a deeper inner cavity, a plurality of circles of spaced annular grains are formed in the inner cavity, the inverted rib position is easily damaged by pulling after the conventional thimble is formed into the inner cavity, the annular grains are seriously expanded and deformed, the size of the inverted rib position is not easy to guarantee, and the adaptive requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem, and provide the ejecting structure of loosing core of cylinder ring line product back-off to realize taking off by force and loose core and guarantee that the shaping of back-off ring line product is accurate. In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the cylinder ring grain product back-off ejection core pulling structure comprises a lower die core, a first molding block arranged on the surface of the lower die core, a second molding block integrally connected with the first molding block, and a supporting block arranged on two sides of the second molding block and bent above the second molding block, wherein a push rod penetrating through the lower die core is arranged at the center of the first molding block in a lifting and moving manner, an annular groove is arranged between the periphery of the push rod and the first molding block, a plurality of flanges arranged at intervals are circumferentially arranged on the upper part of the push rod, a group of extending parts extending to abut against the side wall of the push rod are symmetrically arranged on the side wall of the annular groove, and a plurality of first push rods surrounding the push rod and penetrating through the lower die core are arranged circumferentially of the first molding block.

Specifically, a plurality of rib position grooves which are arranged along the axial direction of the first forming block are arranged on the outer wall of the first forming block.

Specifically, the opposite supporting blocks are arranged at intervals, and a forming space is reserved between the inner side of each supporting block and the second forming block.

Specifically, the second molding block is provided with a plurality of groups of second thimbles which are symmetrically arranged and penetrate through the lower die core.

Specifically, the bottom of the lower die core is embedded into the lower template, an ejector pin plate group capable of lifting and moving is arranged below the lower template, and a bottom plate is arranged below the ejector pin plate group.

Specifically, the thimble plate group comprises a lower thimble plate and an upper thimble plate, and the bottoms of the first thimble and the second thimble are fixed in the upper thimble plate.

Specifically, be equipped with the removal space of holding fixed block in the bottom plate, remove the spring of embedding butt fixed block in the space, the bottom of ejector pin runs through last thimble board and is just crimping spring spacing in the fixed block with lower thimble board.

Compared with the prior art, the utility model discloses the beneficial effect of the ejecting structure of loosing core of cylinder ring line product back-off mainly embodies:

through set up annular and extension in first shaping piece, be favorable to the product shaping to have the dark chamber structure of breach, when the cooperation ejector pin carries out the forced demoulding, can not lead to taking place to damage by the tourus that the annulate that the annular groove formed and be the surrounding state and be located the ejector pin periphery, the homogeneity of ejector pin atress when guaranteeing the forced demoulding, shaping structure is accurate.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of a lower mold core structure in the present embodiment;

FIG. 3 is a schematic cross-sectional view of the lift pin of the present embodiment;

FIG. 4 is a schematic view of the product structure in this embodiment;

FIG. 5 is a schematic view of a back structure of the reverse buckling portion in the present embodiment;

the figures in the drawings represent:

1 lower die core, 11 lower templates, 12 bottom plates, 2 first forming blocks, 21 ring grooves, 22 extending parts, 23 rib position grooves, 3 second forming blocks, 31 supporting blocks, 32 forming spaces, 4 ejector rods, 41 flanges, 5 first ejector pins, 51 second ejector pins, 6 lower ejector pin plates, 61 upper ejector pin plates, 7 fixing blocks, 71 springs, 8 back-off parts, 81 buckling parts, 82 circular ring bodies, 83 gaps, 84 circular patterns, 85 reinforcing ribs, 86 clamping grooves and 87 bridging parts.

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 5, the present embodiment is a cylinder annular product inverted buckle ejection core-pulling structure, which includes a lower mold core 1, a first molding block 2 disposed on a surface of the lower mold core 1, a second molding block 3 integrally connected to the first molding block 2, and a supporting block 31 disposed on two sides of the second molding block 3 and bent to an upper side thereof.

The center of the first forming block 2 is provided with a mandril 4 which passes through the lower die core 1 and is arranged in a lifting and moving way, and a ring groove 21 is arranged between the periphery of the mandril 4 and the first forming block 2. The upper part of the mandril 4 is provided with a plurality of flanges 41 arranged at intervals along the circumference. The side wall of the ring groove 21 is symmetrically provided with a group of extension parts 22 which extend to abut against the side wall of the mandril 4.

The outer wall of the first forming block 2 is provided with a plurality of rib position grooves 23 which are arranged along the axial direction.

The opposite supporting blocks 31 are arranged at intervals, and a molding space 32 is reserved between the inner side of the supporting block 31 and the second molding block 3.

A plurality of first thimbles 5 which are arranged around the ejector rod 4 and penetrate through the lower die core 1 are arranged on the first molding block 2 in the circumferential direction, and a plurality of second thimbles 51 which are symmetrically arranged in groups and penetrate through the lower die core 1 are arranged on the second molding block 3.

The bottom of the lower die core 1 is embedded into the lower template 11, an ejector pin plate group capable of lifting and moving is arranged below the lower template 11, and a bottom plate 12 is arranged below the ejector pin plate group.

The thimble plate group comprises a lower thimble plate 6 and an upper thimble plate 61, and the bottoms of the first thimble 5 and the second thimble 51 are fixed in the upper thimble plate 6. The bottom plate 12 is internally provided with a moving space for accommodating the fixed block 7, a spring 71 abutting against the fixed block 7 is embedded in the moving space, and the bottom end of the ejector rod 4 penetrates through the upper ejector plate 61 and the lower ejector plate 6 to be limited in the fixed block 7 and is in compression joint with the spring 71.

The lower die core 1 and the upper die core form a molded and injection molded product, and the product comprises a reverse buckling part 8 which is arranged corresponding to the first molding block 2 in a copying manner and a buckling part 81 which is arranged corresponding to the second molding block 3 in a copying manner. The inside of back-off portion 8 is equipped with the tourus 82 corresponding to annular groove 21, and the bilateral symmetry of tourus 82 is equipped with the breach 83 corresponding to extension 22, and the inner wall circumference of tourus 82 is equipped with the ring line 84 corresponding to flange 41.

The inner wall of the reverse buckling part 8 is circumferentially provided with a reinforcing rib 85 corresponding to the rib position groove 23.

Two sides of the buckling part 81 are provided with clamping grooves 86 which are avoided from the supporting block 31, and a bridging part 87 corresponding to the forming space 32 is formed between the opposite clamping grooves 86.

When using this embodiment, lower mould benevolence 1 and the common shaping product of last mould benevolence, during the die sinking motion, the thimble board group rises and drives ejector pin 4 and a plurality of thimble top pushes away the product, ejector pin 4 breaks away from extension 22 with the tourus 82 of product, simultaneously a plurality of thimbles support the back-off portion 8 and the buckling parts 81 of product, lower thimble board 6 descends the return, drive fixed block 7 and 4 internal contraction of ejector pin and take off tourus 82 by force, because breach 83 position on the tourus 82, make tourus 82 atress expansion can not cause the damage, ejector pin 4 breaks away from the back, the thimble is ejecting the product completely.

Through set up annular 21 and extension 22 in first shaping piece 3 in this embodiment, be favorable to the product shaping to have the deep cavity structure of breach 83, when cooperation ejector pin 4 carries out the forced demoulding, can not lead to the tourus 82 that is formed by annular 21 to take place the damage, many thimbles are the surrounding state and are located ejector pin 4 periphery, the homogeneity of ejector pin 4 atress when guaranteeing the forced demoulding, and the shaping structure is accurate.

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 (7)

1. Ejecting structure of loosing core of cylinder ring line product back-off, its characterized in that: including lower mould benevolence, locate the first shaping piece on lower mould benevolence surface, with first shaping piece integrated connection's second shaping piece, locate second shaping piece both sides and buckle to the supporting shoe above that, the center of first shaping piece is equipped with the ejector pin that runs through lower mould benevolence lift removal setting, is equipped with the annular between the periphery of ejector pin and the first shaping piece, the upper portion circumference of ejector pin is equipped with the flange that a plurality of intervals set up, the symmetry is equipped with a set of extension on the lateral wall of annular and supports the extension of leaning on the lateral wall of ejector pin, the circumference of first shaping piece is equipped with a plurality of first thimbles that set up and run through lower mould benevolence around the ejector pin.

2. The cylinder ring grain product back-off ejection core-pulling structure of claim 1, characterized in that: and a plurality of rib position grooves which are arranged along the axial direction of the first forming block are arranged on the outer wall of the first forming block.

3. The cylinder ring grain product back-off ejection core-pulling structure of claim 1, characterized in that: the opposite supporting blocks are arranged at intervals, and a forming space is reserved between the inner side of each supporting block and the second forming block.

4. The cylinder ring grain product back-off ejection core-pulling structure of claim 1, characterized in that: and the second molding block is provided with a plurality of groups of second thimbles which are symmetrically arranged and penetrate through the lower die core.

5. The cylinder ring grain product back-off ejection core-pulling structure of claim 4, characterized in that: the bottom of the lower die core is embedded into the lower template, an ejector pin plate group capable of lifting and moving is arranged below the lower template, and a bottom plate is arranged below the ejector pin plate group.

6. The cylinder ring grain product back-off ejection core-pulling structure of claim 5, characterized in that: the ejector pin plate group comprises a lower ejector pin plate and an upper ejector pin plate, and the bottoms of the first ejector pins and the second ejector pins are fixed in the upper ejector pin plate.

7. The cylinder ring grain product back-off ejection core-pulling structure of claim 5, characterized in that: be equipped with the removal space of holding fixed block in the bottom plate, the spring of butt fixed block is embedded to the removal space, and the bottom of ejector pin runs through last thimble board and is just crimping spring with lower thimble board spacing in the fixed block.

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