CN112549454B

CN112549454B - Core-pulling mechanism of injection molding mold of oil tank refueling mask

Info

Publication number: CN112549454B
Application number: CN201910854769.2A
Authority: CN
Inventors: 瞿登科; 陈群; 陈福; 张振华; 陶海峰
Original assignee: Shenzhen Xingjingke Plastic Mould Co ltd
Current assignee: Shenzhen Xingjingke Plastic Mould Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2022-08-05
Anticipated expiration: 2039-09-10
Also published as: CN112549454A

Abstract

A core-pulling mechanism of an injection molding die of an oil tank refueling mask comprises a movable die plate and a fixed die plate, wherein a core and a first cavity are arranged on the fixed die plate, and a second cavity is arranged on the movable die plate; the core comprises a main core fixedly embedded on the fixed die plate, and the main core, the first cavity and the fixed die plate are provided with installation cavities; the core also comprises a rotary separating core arranged in the mounting cavity and a driving mechanism which is arranged on the fixed template and drives the rotary separating core to rotate in the mounting cavity, one end of the rotary separating core, which is far away from the fixed template, penetrates out of the mounting cavity, and a sliding hole is processed at the end, and the sliding hole is connected with the sliding separating core in a sliding manner; a recovery mechanism for driving the sliding split core to move towards the sliding hole is arranged in the rotating split core; the movable template is provided with an extension mechanism for driving the sliding split core to move towards the outside of the sliding hole; the mold core, the first mold cavity and the second mold cavity are assembled to form a product primary blank cavity for accommodating a product primary blank. The advantages are that: the problem of the difficult shaping of the inboard convex body of main casing body one end is kept away from to inferior casing among the oil tank filler sleeve is solved.

Description

Core-pulling mechanism of injection molding mold of oil tank refueling mask

Technical Field

The invention relates to an injection mold, in particular to a core-pulling mechanism of an injection molding mold of an oil tank refueling mask.

Background

The oil tank filler cap is an automobile part which is arranged at an oil tank filler opening and is matched with an oil tank filler cap to seal the oil tank filler opening.

A newly designed oil tank filler cap, refer to fig. 6, it includes chassis 101, connect to the main casing 102 and connect and communicate the inferior casing 103 on one side of the casing on one side of chassis 101, combine fig. 8 and fig. 9, the projection of inferior casing 103 is a fan shape, its one end extends with main casing 102, another end extends to the direction far away from main casing 102, and its inner concave surface faces chassis 101, there is a pit 104 in the middle part of one side far away from chassis 101 and main casing 102 outside the inferior casing 103, thus make the inboard position of inferior casing 103 and pit 104 correspond to form a inner convex body 105, inner convex body 105 causes the inferior casing 103 to keep away from main casing 102 one end inboard to form a step surface; referring to fig. 7, a first convex body 106 is connected to a side of the main housing 102 opposite to the secondary housing 103, and the first convex body 106 is connected to the chassis 101; referring to fig. 8, a second protrusion 107 is connected to one side of the main housing 102, and the second protrusion 107 is located between the sub-housing 103 and the first protrusion 106 and connected to the chassis 101; referring to fig. 6, a third convex body 108 is connected to a side of the subject-object opposite to the second convex body 107, and the third convex body 108 is connected to the chassis 101; referring to fig. 7, a fourth spur 109 is connected to the edge of the base plate 101, and the fourth spur 109 is located between the first spur 106 and the second spur 107 in the circumferential direction of the base plate 101; referring to fig. 8, a circular opening 110 is provided at a side of the main housing 102 opposite to the chassis 101, and a first soft gel 111 is provided along the circular opening 110 at a side of the main housing 102 opposite to the chassis 101; referring to fig. 6 to 8, a second soft colloid 112 is connected to the edge of the bottom plate 101 along the circumferential direction of the bottom plate 101; a third soft colloid 117 is connected to the peripheral side wall of the main housing 102, and the third soft colloid 117 is located between the secondary housing 103 and the second convex body 107 in the peripheral direction of the main housing 102.

When the newly designed oil tank refueling port cover is injection molded, a product blank composed of the main shell 102, the secondary shell 103, the first convex body 106, the second convex body 107, the third convex body 108 and the fourth convex body 109 needs to be formed by hard glue injection molding, and then the first soft colloid 111, the second soft colloid 112 and the third soft colloid 117 are formed by soft glue injection molding on the basis of the product blank, so that a finished product is formed. When the injection molding product is initially formed, the inner convex body 105 formed at the inner side of one end of the main shell 102 is far away from the secondary shell 103, so that the core pulling is performed by using a traditional rotary core pulling structure, the inner convex body 105 is damaged, and qualified products are difficult to produce.

Disclosure of Invention

The invention aims to provide a core-pulling mechanism of an injection molding die of an oil tank refueling mask, which has the advantages that: the problem of above-mentioned secondary shell in the oil tank filler sleeve of new design keep away from the difficult shaping of the inboard convex body of main casing body one end is solved.

The above purpose of the invention is realized by the following technical scheme: a core-pulling mechanism of an injection molding die of an oil tank refueling mask comprises a movable die plate and a fixed die plate, wherein the fixed die plate is connected with a core and a first cavity, the movable die plate is connected with a second cavity, and the core is provided with a pouring gate;

the core comprises a main core fixedly embedded on the fixed die plate, and the main core, the first cavity and the fixed die plate are provided with installation cavities; the mold core further comprises a rotary split core which is arranged in the installation cavity and is in sliding fit with the installation cavity, the projection of the rotary split core is in a sector shape, and a driving mechanism which is arranged on the fixed mold plate and drives the rotary split core to rotate around the axis of the rotary split core in the installation cavity; a recovery mechanism for driving the sliding split core to move towards the sliding hole when the movable template is separated from the fixed template is arranged in the rotating split core; the movable template is provided with an extension mechanism which drives the sliding split core to move towards the outside of the sliding hole when the movable template and the fixed template are assembled; and the mold core, the first mold cavity and the second mold cavity are assembled to form a product initial blank cavity for accommodating a product initial blank.

Through the technical scheme, when the drawing of patterns, at first movable mould board and fixed die plate separation, under the effect of retrieving the mechanism, the slip divides the core to remove in the slide opening, thereby make the slip divide the core earlier with the separation of product primary embryo, then under actuating mechanism's effect, the rotatory one end that divides the core to stretch out the installation cavity withdraws the installation cavity, thereby make the rotatory inferior casing that divides the core to follow product primary embryo shift out, whole process can not cause the damage to interior convex body in the inferior casing, the difficult problem of interior convex body shaping that the inboard of the main casing body one end of refueling was kept away from to inferior casing in the oil tank gauze mask of above-mentioned new design has been solved.

The invention is further configured to: the recovery mechanism comprises a stepped hole which is arranged in the rotary branch core along the axis direction of the sliding hole and is communicated with the bottom of the sliding hole, a sliding rod which is slidably arranged in the stepped hole in a penetrating manner and is fixedly connected with the sliding branch core at one end, a fixed block which is fixedly connected to the sliding rod and is far away from one end of the sliding branch core, and a spring which is sleeved on the sliding rod and pushes the fixed block in the direction far away from the sliding hole.

Through above-mentioned technical scheme, when the movable mould board and the fixed mould board separation, the spring can promote the fixed block to the direction of keeping away from the sliding hole to make the fixed block slide to the direction of keeping away from the sliding hole, the fixed block drives through the slide bar this moment and slides and divide the core to slide to the sliding hole, thereby makes to slide and divides the core to separate with the product primary embryo earlier.

The invention is further configured to: the fixed block is connected with the slide rod through a bolt.

Through the technical scheme, the fixed block and the sliding block are convenient to assemble and disassemble.

The invention is further configured to: the extension mechanism comprises a jack, a notch and an inserted rod, wherein the jack is arranged on one side of the mold core, which faces the movable mold plate, and is communicated with the installation cavity; when the movable template is separated from the fixed template, one end of the fixed block, which is far away from the sliding hole, extends into the notch under the action of the spring, and one end of the fixed block, which is close to the notch, is provided with a first inclined guide surface; and a second inclined guide surface matched with the first inclined guide surface is processed at one end of the inserted rod, which is far away from the movable template.

Through the technical scheme, when the movable template and the fixed template are gradually close to each other, one end, far away from the movable template, of the inserted rod penetrates through the insertion hole to enter the notch and is abutted against the fixed block, and the inserted rod extrudes the fixed block into the stepped hole under the action of the first inclined guide surface and the second inclined guide surface along with the further approach of the movable template and the fixed template, so that the fixed block drives the sliding split core to move outwards of the sliding hole through the sliding rod; meanwhile, the inserted rod can prevent the sliding split core from being pressed back into the sliding hole during injection molding.

The invention is further configured to: the driving mechanism comprises a connecting rod and an air cylinder, the connecting rod is hinged to one end, close to the fixed die plate, of the rotary split core, the air cylinder is fixedly connected to one side, back to the main core, of the fixed die plate, and one end, away from the rotary split core, of the connecting rod penetrates out of the mounting cavity and is hinged to a piston rod of the air cylinder.

Through the technical scheme, under the effect of connecting rod, the user can drive the rotatory core that divides around the axis of rotatory core that divides in the installation cavity to not equidirectional rotation through the extension of control cylinder with shorten to can make the staff according to actual work condition, the rotatory core that divides is kept away from the one end of fixed die plate and is stretched out or withdraw the installation cavity.

The invention is further configured to: the rotary core separating device is characterized in that a positioning block is fixedly connected to the outer convex surface of the rotary core separating device, one side of the mounting cavity, facing the rotary core separating device, is provided with a positioning groove in sliding fit with the positioning block, and when the positioning block abuts against one end, far away from the fixed die plate, of the positioning groove, the rotary core separating device is combined with the main core to form a shape matched with the inner wall of the primary blank of a product.

Through above-mentioned technical scheme, locating piece and constant head tank cooperation can avoid rotatory branch core under actuating mechanism's effect excessive stretching out from the installation cavity to guarantee the quality of product.

The invention is further configured to: the first cavity comprises a first forming block for forming a first convex body, a second forming block for forming a second convex body and one side wall of the secondary shell, a third forming block for forming a third convex body, a fourth forming block for forming a fourth convex body, a fifth forming block for forming the other side wall of the secondary shell and a sixth forming block for forming an inner concave surface of the secondary shell facing the base and an end surface of the secondary shell far away from the main shell;

a first forming groove matched with the first convex body is processed on the side wall of the first forming block;

a second forming groove matched with the second convex body and a first side wall forming groove matched with the side wall corresponding to the secondary shell are formed in the side wall of the second forming block;

a third forming groove matched with the third convex body is processed on the side wall of the third forming block;

a fourth forming groove matched with the fourth convex body is processed on the side wall of the fourth forming block;

a second side wall forming groove matched with the corresponding side wall of the secondary shell is processed on the side wall of the fifth forming block;

a third side wall forming groove matched with an inner concave surface of the secondary shell facing the base and the end surface of the secondary shell far away from the main shell is processed on the side wall of the sixth forming block, and the sixth forming block is matched with the main core to form the mounting cavity;

the first forming block, the second forming block, the third forming block, the fourth forming block and the fifth forming block are respectively connected with a side drawing mechanism;

the side-pulling mechanism comprises a sliding block connected to the fixed die plate in a sliding mode, an inclined guide rod fixedly connected to the movable die plate and an inclined guide hole formed in the sliding block and matched with the inclined guide rod, one end of the inclined guide rod is fixedly connected with the movable die plate, and the other end of the inclined guide rod extends in an inclined mode towards the direction far away from the movable die plate and away from the second die cavity.

According to the technical scheme, when the movable template moves towards the fixed template, the inclined guide rod can be inserted into the inclined guide hole in the corresponding slide block, the slide block moves towards the mold core under the action of the inclined guide rod and the inclined guide hole along with the further movement of the movable template towards the fixed template, so that the first forming block, the second forming block, the third forming block, the fourth forming block and the fifth forming block are gradually close to the mold core, and when the movable template is attached to the fixed template and the positioning block abuts against one end, far away from the fixed template, of the positioning groove, the mold core, the first mold cavity and the second mold cavity are assembled to form a product primary blank cavity for accommodating a product primary blank; when the movable template gradually leaves the fixed template, the sliding block moves towards the direction far away from the mold core under the action of the inclined guide rod and the inclined guide hole, so that the first forming block, the second forming block, the third forming block, the fourth forming block and the fifth forming block are separated from the primary product blank, and finally the inclined guide rod can be pulled out from the inclined guide hole.

In summary, the beneficial technical effects of the invention are as follows:

1. the problem that the inner convex body on the inner side of the end, far away from the main shell, of the secondary shell in the newly designed oil tank refueling mask is difficult to form is solved, when demolding is carried out, the movable template is separated from the fixed template, the sliding split core moves towards the sliding hole under the action of the recovery mechanism, so that the sliding split core is separated from the primary product blank firstly, then under the action of the driving mechanism, the end, extending out of the mounting cavity, of the rotating split core is retracted into the mounting cavity, so that the rotating split core is moved out of the secondary shell of the primary product blank, and the inner convex body in the secondary shell cannot be damaged in the whole process;

2. the locating piece cooperates with the constant head tank, can avoid rotatory core that divides under actuating mechanism's effect excessive stretching out from the installation cavity to guarantee the quality of product.

Drawings

FIG. 1 is a schematic illustration of a structure embodied on a fixed template;

FIG. 2 is a schematic diagram of a structure embodied on a moving platen;

FIG. 3 is an enlarged view at A in FIG. 1;

FIG. 4 is a cross-sectional view of a structure embodying a core;

FIG. 5 is an enlarged view at B in FIG. 4;

FIG. 6 is a schematic structural diagram of a newly designed fuel tank filler cap;

FIG. 7 is a schematic view of the structure of a fuel filler cap of a fuel tank with a new design from another direction;

FIG. 8 is a schematic view of a second projection on a fuel filler cap of a fuel tank embodying the new design;

fig. 9 is a sectional view of a newly designed fuel tank filler cap.

In the figure, 1, a movable template; 2. fixing a template; 3. a core; 31. a primary core; 32. rotating and separating the cores; 33. a mounting cavity; 34. a drive mechanism; 341. a connecting rod; 342. a cylinder; 35. a slide hole; 36. sliding and separating the cores; 37. a recovery mechanism; 371. a stepped hole; 372. a slide bar; 373. a fixed block; 374. a spring; 38. a protracting mechanism; 381. a jack; 382. a notch; 383. inserting a rod; 39. positioning blocks; 30. positioning a groove; 4. a first cavity; 41. a first molding block; 411. a first forming groove; 42. a second molding block; 421. a second forming groove; 422. a first sidewall forming groove; 43. a third forming block; 431. a third forming groove; 44. a fourth forming block; 441. a fourth forming groove; 45. a fifth forming block; 451. a second sidewall forming groove; 46. a sixth forming block; 461. a third sidewall forming groove; 471. a slider; 472. an inclined guide rod; 473. oblique guide holes; 5. a second cavity; 101. a chassis; 102. a main housing; 103. a secondary housing; 104. a pit; 105. an inner convex body; 106. a first convex body; 107. a second convex body; 108. a third convex body; 109. a fourth convex body; 110. a circular opening; 111. a first soft gel; 112. a second soft gel; 113. a first gap; 114. a second gap; 115. a third gap; 116. a fourth gap; 117. a third soft gel; 118. a first tab; 119. a second tab.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the core-pulling mechanism for the injection molding mold of the fuel tank filler cap disclosed by the invention comprises a fixed mold plate 2 and a movable mold plate 1 which are arranged in parallel, wherein a first cavity 4 of a mold core 3 is arranged on one side of the fixed mold plate 2 facing the movable mold plate 1; a second cavity 5 is arranged on one side of the movable template 1 facing the movable template 1; when the movable mould plate 1 is attached to the fixed mould plate 2, the core 3, the first cavity 4 and the second cavity 5 form a product initial blank cavity for accommodating a product initial blank.

Referring to fig. 3, the first cavity 4 includes a first molding block 41, a second molding block 42, a third molding block 43, a fourth molding block 44, a fifth molding block 45, and a sixth molding block 46 provided on the stationary mold plate 2 around the core 3; the first forming block 41 is used for forming the first convex body 106, and a first forming groove 411 matched with the first convex body 106 is processed on the side wall, facing the core 3, of the first forming block 41; the second forming block 42 is used for forming the second convex body 107 and one side wall of the secondary shell 103, and a second forming groove 421 matched with the second convex body 107 and a first side wall forming groove 422 matched with the corresponding side wall of the secondary shell 103 are processed on one side, facing the mold core 3, of the second forming block 42; the third forming block 43 is used for forming the third convex body 108, and a third forming groove 431 matched with the third convex body 108 is processed on one side of the third forming block 43 facing the core 3; the fourth forming block 44 is used for forming the fourth convex body 109, and a fourth forming groove 441 matched with the fourth convex body 109 is processed on one side of the fourth forming block 44 facing the core 3; the fifth forming block 45 is used for forming the other side wall of the secondary shell 103, and a second side wall forming groove 451 which is matched with the corresponding side wall of the secondary shell 103 is processed on the side wall of the fifth forming block 45 facing the core 3; the sixth forming block 46 is used for forming an inner concave surface of the secondary housing 103 facing the base and an end surface of the secondary housing 103 far away from the main housing 102, the sixth forming block 46 is embedded in the fixed mold plate 2, and a third side wall forming groove 461 matched with the inner concave surface of the secondary housing 103 facing the base and the end surface of the secondary housing 103 far away from the main housing 102 is processed on one side of the sixth forming block 46 facing the mold core 3.

With reference to fig. 2 and 3, the first forming block 41, the second forming block 42, the third forming block 43, the fourth forming block 44 and the fifth forming block 45 are respectively connected with a side-pulling mechanism, the side-pulling mechanism includes a sliding block 471 slidably connected to the fixed die plate 2, an inclined guide rod 472 fixedly connected to the movable die plate 1 and an inclined guide hole 473 provided on the sliding block 471 and matched with the inclined guide rod 472; one end of the inclined guide rod 472 is fixedly connected with the movable mould plate 1, and the other end extends obliquely in a direction away from the movable mould plate 1 and the second cavity 5. The first, second, third, fourth and fifth forming

blocks

41, 42, 43, 44 and 45 are fixed to the corresponding sliders 471 on the side facing the core 3. When the slant guide 472 is inserted into the slant guide hole 473, if the movable platen 1 moves in a direction to approach the fixed platen 2, the first molding block 41, the second molding block 42, the third molding block 43, the fourth molding block 44, and the fifth molding block 45 move in a direction to approach the core 3; when the movable platen 1 moves in a direction away from the fixed platen 2, the first molding block 41, the second molding block 42, the third molding block 43, the fourth molding block 44, and the fifth molding block 45 move in a direction away from the core 3.

Referring to fig. 4 and 5, the core 3 includes a main core 31 fixedly embedded in one side of the movable mold plate 1 facing the fixed mold plate 2 and a rotary divided core 32 having a sector projection, and a gate is provided on the main core 31; a rotary cavity is formed between the main core 31 and the sixth forming block 46, an expansion cavity is formed on the fixed die plate 2, and the rotary cavity and the expansion cavity are combined to form an installation cavity 33; the rotary split core 32 is arranged in the installation cavity 33 and is in sliding fit with the installation cavity 33, the inner concave cambered surface of the rotary split core 32 is abutted with the sixth forming block 46, and the outer convex cambered surface of the rotary split core 32 is abutted with the main core 31; one end of the rotary split core 32, which is far away from the fixed die plate 2, penetrates out of the main core 31, and the outer contour of the end is matched with the inner wall of the secondary shell 103 of the product.

Referring to fig. 4, a driving mechanism 34 for driving the rotary split core 32 to rotate around the axis of the rotary split core 32 in the installation cavity 33 is installed on the fixed die plate 2, the driving mechanism 34 includes a connecting rod 341 hinged to one end of the rotary split core 32 close to the fixed die plate 2 and a cylinder 342 fixedly connected to one side of the fixed die plate 2 facing away from the main core 31, and one end of the connecting rod 341 facing away from the rotary split core 32 is hinged to the end of a piston rod of the cylinder 342. The user can control the extension and contraction of the cylinder 342 to drive the rotary core 32 to rotate in different directions around the axis of the rotary core 32 in the mounting cavity 33.

Referring to fig. 4 and 5, a sliding hole 35 is formed in a position, corresponding to the concave body of the product, at one end of the rotary split core 32, which is far away from the fixed die plate 2, a sliding split core 36 is connected in the sliding hole 35 in a sliding manner, and one side of the sliding split core 36, which faces the outside of the sliding hole 35, is matched with the inner wall of the secondary shell 103 of the product (more specifically, matched with the inner convex body 105); a recovery mechanism 37 for driving the sliding split core 36 to move into the sliding hole 35 when the movable die plate 1 is separated from the fixed die plate 2 is arranged in the rotating split core 32; the movable platen 1 is provided with an extension mechanism 38 for driving the slide split core 36 to move out of the slide hole 35 when the movable platen 1 and the fixed platen 2 are clamped.

With reference to fig. 4 and 5, the recycling mechanism 37 includes a stepped hole 371 opened in the rotary split core 32 along the axial direction of the sliding hole 35 and communicated with the bottom of the sliding hole 35, a sliding rod 372 slidably inserted through the stepped hole 371 and having one end fixedly connected to the sliding split core 36, a fixing block 373 slidably connected to the stepped hole 371 and bolted to one end of the sliding rod 372 far away from the sliding split core 36, and a spring 374 sleeved on the sliding rod 372; the stepped hole 371 comprises a first hole, a second hole and a third hole which are sequentially arranged along the direction gradually far away from the slide hole 35, and the diameters of the first hole, the second hole and the third hole are gradually increased; the fixing block 373 is located in the third hole, the spring 374 is located in the second hole, one end of the spring 374 abuts against the fixing block 373, and the other end of the spring abuts against the bottom wall of the second hole, which is far away from one end of the third hole.

Referring to fig. 4 and 5, the extending mechanism 38 includes a plug hole 381 which is opened on one side of the core 3 facing the movable platen 1 and is communicated with the installation cavity 33, a notch 382 which is arranged at a position corresponding to the plug hole 381 on the outer convex side of the rotary split core 32 and is communicated with one end of the stepped hole 371 far away from the sliding hole 35, and an insert rod 383 which is fixedly connected to one side of the movable platen 1 facing the fixed platen 2 and is in inserted fit with the plug hole 381, a first inclined guide surface is processed on one end of the fixed block 373 close to the notch 382, and a second inclined guide surface which is matched with the first inclined guide surface is processed on one end of the insert rod 383 far away from the movable platen 1.

With reference to fig. 4, a positioning block 39 is fixedly connected to the outer convex side of the rotary core 32, and a positioning groove 30 is formed in one side of the mounting cavity 33 of the positioning block 39 facing the outer convex side of the rotary core 32 along the rotation direction of the rotary core 32; the positioning block 39 is inserted into the positioning groove 30 and slidably engaged with the positioning groove 30. When the positioning block 39 abuts against one end of the positioning groove 30 far away from the fixed mold plate 2, the rotary split core 32 and the main core 31 are combined to form a shape fitting the inner wall of the product blank, and at this time, the notch 382 is just aligned with the insertion hole 381. When the positioning block 39 abuts against one end of the positioning slot 30, which is far away from the fixed die plate 2, if the movable die plate 1 and the fixed die plate 2 are in a separated state, the fixed block 373 will extend into the notch 382 under the action of the spring 374, so that the sliding split core 36 is retracted into the sliding hole 35; when the movable die plate 1 moves to the fixed die plate 2, one end of the inserted bar 383, which is far away from the movable die plate 1, firstly penetrates through the insertion hole 381, then enters the notch 382 and abuts against the fixed block 373, along with the fact that the movable die plate 1 is gradually close to the fixed die plate 2, under the action of the first inclined guide surface and the second inclined guide surface, the inserted bar 383 can extrude the fixed block 373 into the stepped hole 371, and therefore the sliding block 471 moves outwards towards the sliding block 471, and when the movable die plate 1 is attached to the fixed die plate 2, one end of the fixed block 373, which faces the sliding hole 35, abuts against the bottom wall of one end, close to the second hole, of the third hole.

Before injection molding, the movable mold plate 1 and the fixed mold plate 2 are in a separated state, and the rotary split core 32 is in a state of being retracted in the installation cavity 33; during injection molding, the rotary split core 32 rotates in the mounting cavity 33 under the action of the driving mechanism 34, so that the positioning block 39 is abutted against one end of the positioning groove 30 far away from the fixed die plate 2; then the movable template 1 gradually approaches the fixed template 2 and finally is attached to the fixed template 2, at the moment, one end of the sliding split core 36, which is far away from the fixed block 373, extends out of the sliding hole 35, and the mold core 3, the first cavity 4 and the second cavity 5 form a product initial blank cavity for accommodating a product initial blank; then injecting hard glue into the primary cavity of the product through the pouring gate; after the product is cooled and formed, the movable mold plate 1 moves towards the direction far away from the fixed mold plate 2, the first forming block 41, the second forming block 42, the third forming block 43, the fourth forming block 44 and the fifth forming block 45 move towards the direction far away from the mold core 3 under the action of the side-pulling mechanism, so that the first mold cavity 4 is separated from the primary product blank, and meanwhile, the sliding split core 36 moves towards the sliding hole 35 under the action of the recovery mechanism 37, so that the sliding split core 36 is separated from the primary product blank firstly; then, the driving mechanism 34 drives the rotary separating core 32 to rotate towards the installation cavity 33, so that the rotary separating core 32 is separated from the primary blank of the product, and at the moment, the rotary separating core 32 does not damage the inner convex body 105 of the primary blank of the product due to the arrangement of the sliding hole 35 on the rotary separating core 32; and finally, taking down the primary blank of the product from the main core 31 to finish demoulding.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an oil tank filler mask injection moulding mould mechanism of loosing core, includes movable mould board (1) and fixed die plate (2), characterized by: the fixed die plate (2) is connected with a die core (3) and a first die cavity (4), the movable die plate (1) is connected with a second die cavity (5), and a pouring gate is arranged on the die core (3);

the mold core (3) comprises a main core (31) fixedly embedded on the fixed mold plate (2), and installation cavities (33) are formed in the main core (31), the first cavity (4) and the fixed mold plate (2); the mold core (3) also comprises a rotary split core (32) which is arranged in the installation cavity (33) and is in sliding fit with the installation cavity (33) and the projection of which is in a fan shape, and a driving mechanism (34) which is arranged on the fixed mold plate (2) and drives the rotary split core (32) to rotate around the axis of the rotary split core (32) in the installation cavity (33), one end of the rotary split core (32) far away from the fixed die plate (2) penetrates out of the mounting cavity (33), and the outer contour of one end of the rotary split core (32) far away from the fixed die plate (2) is matched with the inner wall of the secondary shell (103) of the product, and one end of the rotary core (32) far away from the fixed template (2) is provided with a slide hole (35) corresponding to the position of the concave body of the product, a sliding branch core (36) is connected in the sliding hole (35) in a sliding manner, and one side, facing the outside of the sliding hole (35), of the sliding branch core (36) is matched with the inner wall of the secondary shell (103) of the product; a recovery mechanism (37) which drives the sliding split core (36) to move towards the sliding hole (35) when the movable template (1) is separated from the fixed template (2) is arranged in the rotating split core (32); the movable mould plate (1) is provided with an extension mechanism (38) which drives the sliding split core (36) to move towards the outside of the sliding hole (35) when the movable mould plate (1) and the fixed mould plate (2) are closed; the mold core (3), the first cavity (4) and the second cavity (5) are closed to form a product initial blank cavity for accommodating a product initial blank; the recovery mechanism (37) comprises a stepped hole (371) which is formed in the rotary split core (32) along the axial direction of the sliding hole (35) and communicated with the bottom of the sliding hole (35), a sliding rod (372) which penetrates through the stepped hole (371) in a sliding mode and one end of which is fixedly connected with the sliding split core (36), a fixed block (373) which is fixedly connected to one end, far away from the sliding split core (36), of the sliding rod (372), and a spring (374) which is sleeved on the sliding rod (372) and pushes the fixed block (373) in the direction far away from the sliding hole (35); the extending mechanism (38) comprises a jack (381) which is arranged on one side of the core (3) facing the movable template (1) and communicated with the installation cavity (33), a notch (382) which is arranged on the outer convex side of the rotary split core (32) and corresponds to the jack (381) and is communicated with one end, far away from the sliding hole (35), of the stepped hole (371), and an insert rod (383) which is fixedly connected to one side of the movable template (1) facing the fixed template (2) and is in inserted fit with the jack (381); when the movable template (1) is separated from the fixed template (2), one end, far away from the sliding hole (35), of the fixed block (373) extends into the notch (382) under the action of the spring (374), and a first inclined guide surface is machined at one end, close to the notch (382), of the fixed block (373); and a second inclined guide surface matched with the first inclined guide surface is processed at one end of the insert rod (383) departing from the movable template (1).

2. The injection molding die core-pulling mechanism of the oil tank and oil filling mask according to claim 1, which is characterized in that: and the fixed block (373) is connected with the sliding rod (372) through a bolt.

3. The injection molding die core-pulling mechanism of the oil tank and oil filling mask according to claim 1, which is characterized in that: the driving mechanism (34) comprises a connecting rod (341) hinged to one end, close to the fixed die plate (2), of the rotary split core (32) and a cylinder (342) fixedly connected to one side, back to the main core (31), of the fixed die plate (2), and one end, away from the rotary split core (32), of the connecting rod (341) penetrates out of the mounting cavity (33) and is hinged to a piston rod of the cylinder (342).

4. The injection molding die core-pulling mechanism of the oil tank and oil filling mask according to claim 1, which is characterized in that: rotatory outer convex surface of dividing core (32) on the rigid coupling have locating piece (39), installation cavity (33) are towards rotatory one side of dividing core (32) outer convex surface seted up with locating piece (39) sliding fit's constant head tank (30), locating piece (39) with when the one end butt of fixed die plate (2) is kept away from in constant head tank (30), rotatory divide core (32) with main core (31) combination forms and the anastomotic shape of product initial embryo inner wall.

5. The injection molding die core-pulling mechanism of the oil tank and oil filling mask according to claim 1, which is characterized in that: the first cavity (4) comprises a first molding block (41) for molding a first convex body (106), a second molding block (42) for molding a second convex body (107) and one side wall of the secondary shell (103), a third molding block (43) for molding a third convex body (108), a fourth molding block (44) for molding a fourth convex body (109), a fifth molding block (45) for molding the other side wall of the secondary shell (103), and a sixth molding block (46) for molding an inner concave surface of the secondary shell (103) facing the base and an end surface of the secondary shell (103) far away from the primary shell (102);

a first forming groove (411) matched with the first convex body (106) is machined in the side wall of the first forming block (41);

a second forming groove (421) matched with the second convex body (107) and a first side wall forming groove (422) matched with the corresponding side wall of the secondary shell (103) are processed on the side wall of the second forming block (42);

a third forming groove (431) matched with the third convex body (108) is processed on the side wall of the third forming block (43);

a fourth forming groove (441) matched with the fourth convex body (109) is machined in the side wall of the fourth forming block (44);

a second side wall forming groove (451) matched with the corresponding side wall of the secondary shell (103) is processed on the side wall of the fifth forming block (45);

a third side wall forming groove (461) matched with an inner concave surface of the secondary shell (103) facing the base and an end surface of the secondary shell (103) far away from the main shell (102) is processed on the side wall of the sixth forming block (46), and the sixth forming block (46) is matched with the main core (31) to form the mounting cavity (33);

the first forming block (41), the second forming block (42), the third forming block (43), the fourth forming block (44) and the fifth forming block (45) are respectively connected with a side drawing mechanism;

the side-pulling mechanism comprises a sliding block (471) connected to the fixed die plate (2) in a sliding mode, an inclined guide rod (472) fixedly connected to the movable die plate (1) and an inclined guide hole (473) formed in the sliding block (471) and matched with the inclined guide rod (472), one end of the inclined guide rod (472) is fixedly connected with the movable die plate (1), and the other end of the inclined guide rod (472) extends in an inclined mode in a direction away from the movable die plate (1) and away from the second die cavity (5).