CN215396612U - Doghouse injection mold with double-arc core-pulling mechanism - Google Patents

Abstract

The utility model provides a kennel injection mold with a double-arc core-pulling mechanism, and belongs to the field of molds. It includes fixed die plate and movable mould board, the fixed die plate in be equipped with the shaping chamber, the fixed die plate internal rotation be connected with two circular arcs and take out the core, two circular arcs are taken out the core and are extended into the shaping intracavity, and the tip that the circular arc was taken out the core and is extended into the shaping chamber offsets with another circular arc, two circular arcs are taken out the core and are kept away from between the inner wall of movable mould board with the shaping chamber and form the draw a strip groove, the both ends in draw a strip groove all be connected with the shaping chamber, each circular arc is taken out the core and is connected with the mechanism of loosing core that sets up in the fixed die plate, the mechanism of loosing core enable the circular arc that corresponds and take out the core and rotate along the central line and extend the shaping chamber. Its advantage lies in comparing in the drawing of patterns mode that uses the down tube in the tradition, and circular arc core pulling plate pivoted drawing of patterns mode is simpler quick, and is difficult for dragging to mould the piece and lead to moulding a deformation distortion, improves the qualification rate of moulding a piece.

Description

Doghouse injection mold with double-arc core-pulling mechanism

Technical Field

The utility model belongs to the field of molds, and particularly relates to a doghouse injection mold with a double-arc core-pulling mechanism.

Background

When the doghouse plastic part is manufactured, a pull handle is required to be molded on the surface of the plastic part, the pull handle is positioned in the doghouse plastic part for the sake of attractiveness, and a groove corresponding to the pull handle is formed in the doghouse plastic part and used for providing a hand holding space.

In the conventional demolding manner, the mold block for molding the handle portion is extended out of the plastic part by means of a diagonal rod ejection, thereby completing the demolding step. On one hand, the inclined rod ejection mode depends on layer-by-layer transmission with mechanical movement, the processes are more, the inclined rod ejection process is easy to generate a blocking state, and on the other hand, the module and the inclined rod are always movably connected, and the module is easy to deviate in the module demolding movement process to cause abrasion of a plastic part.

For example, chinese patent document discloses a threaded plug mold [ patent application No.: CN201711495706.X ], a mold core, an insert and a slide block are arranged between an upper mold plate and a lower mold plate, the mold core comprises a first mold core and a second mold core, the first mold core is matched with the upper mold plate, the second mold core is matched with the lower mold plate, the insert comprises a first insert and a second insert, thread grooves for forming threads of a plug are formed in the first insert and the second insert, the slide block comprises a first slide block and a second slide block, the first insert is fixed on the first slide block, the second insert is fixed on the second slide block, and the first mold core, the second mold core, the first insert and the second insert together enclose a mold cavity of the plug.

Disclosure of Invention

The utility model aims to solve the problems and provides a doghouse injection mold with a double-arc core-pulling mechanism.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a kennel injection mold with double circular arcs mechanism of loosing core, includes fixed die plate and movable mould board, the fixed die plate in be equipped with the shaping chamber, the fixed die plate internal rotation be connected with two circular arcs and take out the core, two circular arcs are taken out the core and are extended into the shaping intracavity, and the tip that the circular arc was taken out the core and is extended into the shaping chamber offsets with another circular arc, two circular arcs are taken out the core and are kept away from between the inner wall of movable mould board with the shaping chamber and form the draw a strip groove, the both ends in draw a strip groove all be connected with the shaping chamber, each circular arc is taken out the core and is connected with the mechanism of loosing core that sets up in the fixed die plate, the mechanism of loosing core enable the circular arc that corresponds and take out the core and rotate along the central line and extend the shaping chamber.

In the above kennel injection mold with the double-circular-arc core-pulling mechanism, the core-pulling mechanism comprises a gear ring, the gear ring is arranged at the end part of the circular-arc core-pulling plate far away from the movable template, the core-pulling mechanism further comprises a rack sliding in the fixed template, the rack is meshed with the gear ring and is connected with a first oil cylinder arranged on the fixed template.

In the above kennel injection mold with the double-circular-arc core pulling mechanism, the two first oil cylinders are respectively located on two sides of the fixed mold plate, the two racks are arranged in a staggered manner, and when the two first oil cylinders respectively drive the two racks to move, the moving directions of the two racks are opposite.

In the above kennel injection mold with the double-circular-arc core-pulling mechanism, the end part of the circular-arc core-pulling plate, which is far away from the movable template, is further provided with a butting surface, the core-pulling mechanism further comprises an anti-rotation block which is butted against the butting surface, the anti-rotation block is connected with the fixed template in a sliding manner, and the anti-rotation block is connected with a second oil cylinder arranged on the fixed template.

In the above-mentioned kennel injection mold with double-arc core-pulling mechanism, a cooling cavity is provided in each arc core-pulling plate, and both ends of each arc core-pulling plate are connected with a cooling hose.

In the above kennel injection mold with the double-arc core-pulling mechanism, the cooling hoses are arranged in a plurality of buckles fixed in the fixed mold plate in a penetrating manner.

In the above kennel injection mold with the double-arc core-pulling mechanism, the fixed mold plate is internally provided with the substrate, the arc core-pulling plate is rotatably connected with the substrate, the anti-rotation block and the rack are both in sliding connection with the substrate, and the plurality of buckles are arranged on the substrate.

In the above kennel injection mold with the bi-arc core-pulling mechanism, the plurality of buckles on each cooling hose are linearly arranged, the cooling hoses slide in the buckles, the base plate is provided with the plurality of through grooves corresponding to the cooling hoses one by one, and the cooling hoses are bent to penetrate into the corresponding through grooves.

In the above kennel injection mold with the double-circular-arc core-pulling mechanism, the fixed mold plate is internally provided with the splitter plate, the splitter plate is provided with a plurality of injection molding pipes communicated with the molding cavity, and the plurality of injection molding pipes are respectively positioned at two sides of the base plate.

In the above kennel injection mold with the double-arc core-pulling mechanism, the movable mold plate is provided with the mold core, the mold core is provided with the arc groove, and when the mold is closed, the two arc core-pulling plates extend into the arc groove and abut against the inner wall of the arc groove.

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

1. in the demolding process, the two core pulling mechanisms work to enable the corresponding arc core pulling plate to rotate and extend into the fixed mold plate, so that the arc core pulling plate extends out of the molding cavity and is separated from the plastic part. Compare in the drawing of patterns mode that uses the down tube in the tradition, circular arc core pulling plate pivoted drawing of patterns mode is simpler quick, and is difficult for dragging to mould a piece and leads to moulding a deformation distortion, improves the qualification rate of moulding a piece.

2. When the die is closed, the anti-rotation block is abutted against the abutting surface, so that the anti-rotation block blocks the arc core-pulling plate to prevent the arc core-pulling plate from rotating in the high-pressure injection molding process to cause the failure of molding of a plastic part, and the product percent of pass is improved.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic structural diagram of a fixed die plate;

FIG. 3 is a schematic structural diagram of the fixed mold plate of FIG. 1 after being hidden;

FIG. 4 is a schematic structural view of a core-pulling mechanism;

fig. 5 is a schematic structural view of the movable die plate.

In the figure: the device comprises a fixed die plate 10, a movable die plate 11, a molding cavity 12, an arc core-pulling plate 13, a strip-pulling groove 14, a core-pulling mechanism 15, a gear ring 16, a rack 17, a first oil cylinder 18, a butting face 19, an anti-rotation block 20, a second oil cylinder 21, a cooling hose 22, a buckle 23, a base plate 24, a through groove 25, a flow distribution plate 26, an injection molding pipe 27, a core 28 and an arc groove 29.

Detailed Description

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

Referring to fig. 1-5, a kennel injection mold with a double-arc core-pulling mechanism comprises a fixed mold plate 10 and a movable mold plate 11, wherein a molding cavity 12 is arranged in the fixed mold plate 10, two arc core-pulling plates 13 are rotatably connected in the fixed mold plate 10, the two arc core-pulling plates 13 extend into the molding cavity 12, the end of each arc core-pulling plate 13 extending into the molding cavity 12 abuts against the other arc core-pulling plate 13, a strip pulling groove 14 is formed between each arc core-pulling plate 13 and the inner wall of the molding cavity 12 far away from the movable mold plate 11, two ends of each strip pulling groove 14 are connected with the molding cavity 12, each arc core-pulling plate 13 is connected with a core-pulling mechanism 15 arranged in the fixed mold plate 10, and the core-pulling mechanisms 15 can enable the corresponding arc core-pulling plate 13 to rotate along a central line to extend out of the molding cavity 12.

In this embodiment, when the mold is closed, the two circular arc core-pulling plates 13 extend into the forming cavity 12, and two ends of the two circular arc core-pulling plates 13 extending into the forming cavity 12 abut against each other to form a complete circular arc plate and form the brace groove 14, and during the injection molding process, the injection molding liquid forms a handle bar in the brace groove 14. During demoulding, the two core-pulling mechanisms 15 work to enable the corresponding arc core-pulling plate 13 to rotate and extend into the fixed mould plate 10, so that the arc core-pulling plate 13 extends out of the forming cavity 12 and is disconnected with the handle strip on the plastic part. Compare in the traditional demoulding mode that uses the down tube, the circular arc is taken out core 13 pivoted demoulding mode and is simpler quick, and is difficult for dragging and moulds the piece and lead to moulding a deformation distortion, improves the qualification rate of moulding a piece.

The core pulling mechanism 15 comprises a gear ring 16, the gear ring 16 is arranged at the end part, far away from the movable template 11, of the circular arc core pulling plate 13, the core pulling mechanism 15 further comprises a rack 17 sliding in the fixed template 10, the rack 17 is meshed with the gear ring 16, and the rack 17 is connected with a first oil cylinder 18 arranged on the fixed template 10.

In the present embodiment, the rack 17 is always engaged with the ring gear 16, and the first cylinder 18 is operated to move the rack 17, so that the ring gear 16 rotates with the arc core plate 13 through engagement, and the arc core plate 13 extends out of the molding cavity 12 or into the molding cavity 12.

The two first oil cylinders 18 are respectively positioned at two sides of the fixed die plate 10, the two racks 17 are arranged in a staggered mode, and when the two first oil cylinders respectively drive the two racks 17 to move, the moving directions of the two racks 17 are opposite.

In this embodiment, during closing the mould, the first cylinder 18 is operated to extend its output shaft to displace the rack 17, which in turn causes the ring gear 16 to rotate with the arcuate core plate 13 by meshing, thereby causing the arcuate core plate 13 to extend into the mould cavity 12. During demoulding, the first cylinder 18 is operated to shorten its output shaft and thus to displace the rack 17, which, by meshing, causes the toothed ring 16 to rotate with the arc-shaped extraction plate 13, so that the arc-shaped extraction plate 13 extends out of the moulding cavity 12. In addition, the two racks 17 slide on two different rails, are independent of each other, and do not collide with each other.

The end part, far away from the movable template 11, of the arc core pulling plate 13 is further provided with a butting surface 19, the core pulling mechanism 15 further comprises an anti-rotation block 20 butting against the butting surface 19, the anti-rotation block 20 is in sliding connection with the fixed template 10, and the anti-rotation block 20 is connected with a second oil cylinder 21 arranged on the fixed template 10.

In this embodiment, during mold closing, when the first oil cylinder 18 operates to move the rack 17 so as to drive the arc core-pulling plate 13 to extend into the molding cavity 12 and abut against another arc core-pulling plate 13, the second oil cylinder 21 operates to push the rotation preventing block 20 to move close to the corresponding abutting surface 19, so that the rotation preventing block 20 abuts against the abutting surface 19, and the rotation preventing block 20 blocks the arc core-pulling plate 13 to prevent plastic part molding failure caused by rotation of the arc core-pulling plate 13 in a high-pressure injection molding process. In the demolding process, the second oil cylinder 21 is firstly operated to enable the anti-rotation block 20 to be separated from the connection state of abutting against the corresponding abutting surface 19.

A cooling cavity is arranged in each circular arc core-pulling plate 13, and two ends of each circular arc core-pulling plate 13 are connected with a cooling hose 22.

In the present embodiment, the cooling hose 22 has a deformable capability. On one hand, the cooling liquid introduced into the cooling hose 22 is introduced into the cooling cavity to accelerate the cooling speed of the plastic part molded in the bar drawing groove 14; on the other hand, the deformability of the cooling hose 22 is used to deform and distort the cooling hose 22 during rotation of the circular arc core plate 13.

The cooling hose 22 is inserted into a plurality of buckles 23 fixed in the fixed die plate 10.

In the present embodiment, since the circular arc core plate 13 deforms, twists or moves the cooling hose 22 during rotation, the portion of the cooling hose 22 connected to the catch 23 can be free from distortion deformation by the catch 23.

The fixed die plate 10 is internally provided with a base plate 24, the arc core-pulling plate 13 is rotationally connected with the base plate 24, the anti-rotating block 20 and the rack 17 are both in sliding connection with the base plate 24, and the plurality of buckles 23 are arranged on the base plate 24.

In this embodiment, the base plate 24 serves as a frame, so that the core-pulling mechanism 15 is placed in the frame, and when assembling, the base plate 24 is assembled and then buckled or fixed in the fixed die plate 10, thereby facilitating the installation of the die.

The plurality of buckles 23 on each cooling hose 22 are linearly arranged, the cooling hoses 22 slide in the buckles 23, the base plate 24 is provided with a plurality of through grooves 25 which are in one-to-one correspondence with the cooling hoses 22, and the cooling hoses 22 are bent to penetrate into the corresponding through grooves 25.

In this embodiment, the cooling hose 22 extends into the fixed mold plate 10 in a straight line and passes through the plurality of buckles 23, so as to reduce the length of the cooling hose 22 extending into the fixed mold plate 10. Furthermore, on the one hand, the portion of the cooling hose 22 connected to the catch 23 can be free from distortion under the action of the catch 23; on the other hand, the pulling of the cooling hose 22 caused by the rotation of the circular arc suction core plate 13 can be solved by sliding the cooling hose 22 in the buckle 23.

The fixed die plate 10 is internally provided with a flow distribution plate 26, the flow distribution plate 26 is provided with a plurality of injection molding pipes 27 communicated with the molding cavity 12, and the injection molding pipes 27 are respectively positioned at two sides of the base plate 24.

In this embodiment, on the one hand, a plurality of injection molding pipes 27 are used to accelerate the injection molding process, and on the other hand, a plurality of injection molding pipes 27 are respectively located on both sides of the base plate 24 to accelerate the injection molding process of the tie bar groove 14.

The movable mould plate 11 is provided with a mould core 28, the mould core 28 is provided with an arc groove 29, and when the mould is closed, the two arc core-pulling plates 13 extend into the arc groove 29 and are abutted against the inner wall of the arc groove 29.

In the embodiment, the two circular arc core-pulling plates 13 extend into the circular arc groove 29 and abut against the inner wall of the circular arc groove 29, and the injection molding liquid cannot be molded between the circular arc core-pulling plates 13 and the circular arc groove 29.

The working principle of the utility model is as follows:

in the mold closing process, after the first oil cylinder 18 works to enable the rack 17 to move so as to drive the arc core-pulling plate 13 to extend into the molding cavity 12 and abut against the other arc core-pulling plate 13, the second oil cylinder 21 works to push the anti-rotation block 20 to move close to the corresponding abutting surface 19, so that the anti-rotation block 20 abuts against the abutting surface 19, and then the movable mold plate 11 approaches the fixed mold plate 10 to complete mold closing.

In the demoulding process, after the second oil cylinder 21 works to push the anti-rotation block 20 to be disconnected with the abutting surface 19, the first oil cylinder 18 works to enable the output shaft of the first oil cylinder to be shortened so as to enable the rack 17 to move, the gear ring 16 drives the arc core-pulling plate 13 to rotate through meshing, the arc core-pulling plate 13 extends out of the forming cavity 12, and the arc core-pulling plate 13 extends out of the forming cavity 12 and is disconnected with a handle strip on a plastic part.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the fixed die plate 10, the movable die plate 11, the molding cavity 12, the arc core-pulling plate 13, the tie bar groove 14, the core-pulling mechanism 15, the gear ring 16, the rack 17, the first cylinder 18, the abutting surface 19, the anti-rotation block 20, the second cylinder 21, the cooling hose 22, the buckle 23, the base plate 24, the through groove 25, the flow distribution plate 26, the injection molding pipe 27, the core 28, the arc groove 29, etc., are used more frequently herein, these terms are used only for the convenience of describing and explaining the essence of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (10)

1. A doghouse injection mold with a double-arc core-pulling mechanism comprises a fixed mold plate (10) and a movable mold plate (11), it is characterized in that a molding cavity (12) is arranged in the fixed template (10), two circular arc core-pulling plates (13) are rotationally connected in the fixed template (10), the two circular arc core-pulling plates (13) extend into the molding cavity (12), the end part of the arc core-pulling plate (13) extending into the molding cavity (12) is abutted against the other arc core-pulling plate (13), a draw bar groove (14) is formed between the two arc core-pulling plates (13) and the inner wall of the molding cavity (12) far away from the movable template (11), both ends of the brace groove (14) are connected with the molding cavity (12), each arc core-pulling plate (13) is connected with a core-pulling mechanism (15) arranged in the fixed template (10), the core-pulling mechanism (15) can enable the corresponding arc core-pulling plate (13) to rotate along the central line and extend out of the forming cavity (12).

2. The kennel injection mold with the double-arc core-pulling mechanism according to claim 1, wherein the core-pulling mechanism (15) comprises a gear ring (16), the gear ring (16) is arranged at the end of the arc core-pulling plate (13) far away from the movable mold plate (11), the core-pulling mechanism (15) further comprises a rack (17) sliding in the fixed mold plate (10), the rack (17) is meshed with the gear ring (16), and the rack (17) is connected with a first oil cylinder (18) arranged on the fixed mold plate (10).

3. The doghouse injection mold with the double-circular-arc core pulling mechanism is characterized in that the two first oil cylinders (18) are respectively positioned at two sides of the fixed mold plate (10), the two racks (17) are arranged in a staggered mode, and when the two first oil cylinders respectively drive the two racks (17) to move, the moving directions of the two racks (17) are opposite.

4. The doghouse injection mold with the double-circular-arc core pulling mechanism is characterized in that an abutting surface (19) is further arranged at the end, far away from the movable mold plate (11), of the circular-arc core pulling plate (13), the core pulling mechanism (15) further comprises an anti-rotation block (20) abutting against the abutting surface (19), the anti-rotation block (20) is in sliding connection with the fixed mold plate (10), and the anti-rotation block (20) is connected with a second oil cylinder (21) arranged on the fixed mold plate (10).

5. The doghouse injection mold with the double-circular-arc core pulling mechanism is characterized in that a cooling cavity is arranged in each circular-arc core pulling plate (13), and a cooling hose (22) is connected to each end of each circular-arc core pulling plate (13).

6. The doghouse injection mold with the bi-arc core-pulling mechanism according to claim 5, wherein the cooling hose (22) is inserted into a plurality of buckles (23) fixed in the fixed mold plate (10).

7. The doghouse injection mold with the double-circular-arc core pulling mechanism is characterized in that a base plate (24) is arranged in the fixed mold plate (10), the circular-arc core pulling plate (13) is rotatably connected with the base plate (24), the anti-rotation block (20) and the rack (17) are both in sliding connection with the base plate (24), and the plurality of buckles (23) are arranged on the base plate (24).

8. The doghouse injection mold with the double-circular-arc core pulling mechanism is characterized in that a plurality of buckles (23) on each cooling hose (22) are linearly arranged, the cooling hoses (22) slide in the buckles (23), a plurality of through grooves (25) corresponding to the cooling hoses (22) in a one-to-one mode are formed in the base plate (24), and the cooling hoses (22) are bent to penetrate into the corresponding through grooves (25).

9. The doghouse injection mold with the double-circular-arc core pulling mechanism is characterized in that a splitter plate (26) is arranged in the fixed mold plate (10), a plurality of injection molding pipes (27) communicated with the molding cavity (12) are arranged on the splitter plate (26), and the plurality of injection molding pipes (27) are respectively positioned on two sides of the base plate (24).

10. The doghouse injection mold with the double-arc core-pulling mechanism is characterized in that a core (28) is arranged on the movable mold plate (11), an arc groove (29) is formed in the core (28), and when the mold is closed, the two arc core-pulling plates (13) extend into the arc groove (29) and are abutted against the inner wall of the arc groove (29).

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